Efficient boiled water generating device

Abstract

The efficient boiled water generating device 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 invention 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 hot tank, and the hot tank is correspondingly provided with an electric heating device. The electric heating device heats the above-mentioned hot tank to keep the water in the hot tank at a constant temperature of about 90 degrees Celsius (to avoid excessive pressure in the hot tank due to steam generated by boiling). When the user turns on the hot water tap, the water in the hot tank will be discharged, so the water in the hot tank may stay for a long time and be in a state close to boiling 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 hot tank (or pipeline structure), it is necessary to set a high-power electric heating device in the water dispenser, which not only makes it inconvenient to obtain electricity for the water dispenser, but also leads to waste of electric energy. Therefore, it is necessary to improve the heating structure of the prior art. Summary of the invention

[0003] The object of the present invention 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 the present invention is achieved through the following technical solutions.

[0005] The high-efficiency boiling water generating device disclosed in the present invention comprises a water tank and a heating ball assembly, wherein the water tank is connected to a drain port for pouring water onto the top of the heating ball assembly, the drain port is arranged above the heating ball assembly, a valve body is arranged between the drain port and the water tank, the heating ball assembly comprises 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.

[0006] Preferably, the boiling 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 supporting column, wherein the supporting column is fixedly connected to the bottom end of the heating ball assembly, and the supporting column 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 is cylindrical in 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 up-down direction.

[0014] Preferably, the heating ball assembly comprises 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 adaptably connected to the inverted step.

[0015] Compared with the prior art, the present invention has the following beneficial effects: a water tank is connected to a drain port for pouring water onto the top of the heating ball assembly, the drain port is arranged above the heating ball assembly, a valve body is arranged between the drain port 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 It is a schematic structural diagram of the high-efficiency boiling water generating device of the present invention.

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

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

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

[0020] Figure 5 It is a schematic diagram of the top view of the water receiving tray and the 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 passage 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 present invention 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 on the top of the heating ball assembly 2. The water outlet 11 is arranged above the heating ball assembly 2. A valve body 12 is arranged 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 tube 202, so the aluminum shell 201 is spherical in shape, and a hydrophilic ceramic film 204 is provided on the outer wall of the aluminum shell 201. The hydrophilic ceramic film 204 belongs to the prior art. For example, the Chinese invention patent publication number CN104630756B "Method for forming a high thermal conductivity hydrophilic nano-ceramic film on an aluminum surface" and the Chinese utility model patent publication number CN210881273U "A lithographic metering roller" can be referred to, so that the surface of the heating ball assembly 2 has better hydrophilicity, and the hydrophilic ceramic film 204 has better thermal conductivity and higher temperature resistance. The electric heating tube 202 is provided on the inner wall of the aluminum shell 201.

[0024] The working principle of the boiling water generating device of the present invention is briefly described below: Figure 1As shown, the electric heating tube 202 is powered on to generate heat, and the heat generated by the electric heating tube 202 is transferred to the aluminum spherical shell 201, and the aluminum spherical shell 201 heats the hydrophilic ceramic membrane 204, so that the surface temperature of the heating ball component 2 is increased, and the surface temperature of the heating ball component 2 is made to exceed 100 degrees Celsius (for example, it can be about 130 degrees Celsius to 160 degrees Celsius). Drinking water is contained in the water tank 10. 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 component 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 component 2 has good hydrophilicity, so the water falling on the top of the heating ball component 2 can be well dispersed to cover the surface of the heating ball component 2, which is conducive to increasing the heating ball component 2 and the water body. 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 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 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 opened into a spherical shape, a water layer with a smaller thickness is actually formed on the heating ball component 2. Therefore, the heat radiated 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 faucet. The structure of the hot water faucet can refer to the "push-type anti-scalding water dispenser faucet" with Chinese invention patent publication number CN111839229B. The pressure plate body of the hot water faucet can be connected to a switch in a transmission manner. The switch is electrically connected to the valve body 12. The water dispenser is provided with a preheating key 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 key to make the heating ball assembly 2 work and generate heat. After a short wait, the temperature sensor detects that the aluminum ball shell 201 reaches a preset temperature and the preheating is completed. The controller controls the preheating completion indicator light to light up according to the signal of the temperature sensor. The user swings the pressure plate body to open the hot water faucet, and at the same time the switch connects the valve body 12 to the power supply. The valve body 12 opens, and the drain 11 sprays water on the top of the heating ball assembly 2 at a small flow rate, thereby making boiling water. The boiling water is drained to the hot water faucet through the pipeline 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 with the prior art heat-filled heating structure, the heating ball assembly 2 of the present invention is an open heating structure, so the steam generated by the boiling water will not produce the potential danger of the container exploding; and because the hydrophilic ceramic membrane 204 is provided in combination with the spherical structure of the heating ball assembly 2, the water can be effectively dispersed, and the contact area between the water and the heating ball assembly 2 is increased, thereby greatly increasing the heat exchange efficiency; and because the heat-filled (or pipe structure) heats the water through the inner wall, the heat of the heat-filled will be lost to the outside due to the characteristic of heat dissipation outward, but the heat dissipated outward by the heating ball assembly 2 of the present invention can just be transferred to the water, so the ineffective heat loss is relatively small. As can be seen from the above, the boiling water generating device of the present invention can heat the water efficiently, and because the flow rate required by the water dispenser is small, the instant heating effect can be achieved without setting the power of the electric heating tube 202 to a large level, avoiding the need to set a hot water storage container, which is conducive to the fresh and clean hot water. The heating ball assembly 2 is in contact with the water body on the outer surface, so it is relatively easy to clean the surface of the heating ball assembly 2.

[0027] Furthermore, 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 arranged directly below the heating ball assembly 2, and a drain port 401 is arranged on the outer periphery of the water receiving tray 4. The water receiving tray 4 can be made of stainless steel, so that the water flowing through the surface of the heating ball assembly 2 is gathered at the bottom of the heating ball assembly 2, and the hot water then falls onto the water receiving tray 4, and then the hot water is discharged through the drain port 401, and the drain port 401 can be a notch structure, or a hole structure, and the drain port 401 can be connected to a hot water faucet through a pipeline.

[0028] Furthermore, if Figure 1 As shown, the hot water generating device of the present invention further 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] Furthermore, if Figure 2 As shown, 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 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 threading hole 501, and the above-mentioned wire can pass through the water receiving tray 4 downward along the threading hole 501 to avoid the wire from contacting with water.

[0030] Furthermore, if Figure 2 As shown, the upper end of the support column 5 is screwed with 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 with 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 close to the outer wall of the lower end of the aluminum spherical shell 201 .

[0031] Furthermore, if Figure 1 As shown, the hot water generating device of the present invention further comprises a heat insulating cover 3, the lower end of the heat insulating cover 3 is open, that is, there is no sealing plate at the lower end of the heat insulating cover 3, the heat 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 heat-insulating cover 3, the position of the water hole 301 corresponds to the water outlet 11, and the lower end of the heat-insulating cover 3 is arranged in the corresponding range of the water receiving tray 4, that is, in a top-down view, the heat-insulating cover 3 is within the range of the water receiving tray 4, and the water outlet 11, the water hole 301 and the top of the heating ball assembly 2 are preferably located on the same vertical axis, wherein the water outlet 11 can be above the water hole 301, or the water outlet 11 can extend downward into the water hole 301, so that the water discharged from the water outlet 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 heat-insulating cover 3 to prevent a large amount of steam from overflowing. A small amount of water droplets condensed on the inner wall of the heat-insulating cover 3 can fall onto the water receiving tray 4, and the heat-insulating 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 insulation 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] Furthermore, if Figure 1 and Figure 4 As shown, the outer shape of the heat insulation cover 3 is cylindrical, so the heat insulation cover 3 can well match the outer shape of the heating ball assembly 2, and the center of the heating ball assembly 2 is located at the central axis of the heat insulation cover 3. In other words, the cover side wall 31 is cylindrical, and the cover top plate 32 is a circular flat plate. Figure 1 As shown, the horizontally arranged top cover plate 32 has a poor guiding effect on steam, thereby preventing a large amount of steam from flowing along the top cover plate 32 to the water passing hole 301 .

[0033] Furthermore, if Figure 2As shown, the electric heating tube 202 is in a circular shape and is horizontally arranged. 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 body will receive the heat transmitted by the corresponding part of the electric heating tube 202 almost all around, which can avoid the formation of local heating weak area in the heating ball assembly 2.

[0034] Furthermore, if Figure 2 As shown, the electric heating tubes 202 are arranged at intervals in the vertical direction. In other words, the electric heating tubes 202 are arranged correspondingly on several latitudes of the aluminum ball 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 body. Figure 2 As shown, the electric heating tube 202 is provided with a covering portion 203, and the covering portion 203 and the inner wall of the aluminum spherical shell 201 are integrally formed, which is conducive to efficiently transferring the heat generated by the electric heating tube 202 to the aluminum spherical shell 201. For example, the electric heating tube 202 may include a stainless steel tube shell and a resistance wire, the resistance wire is arranged in the stainless steel tube shell, and magnesium oxide powder for insulation is arranged between the resistance wire and the stainless steel tube shell.

[0035] Furthermore, 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 spherical 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 makes it easy for the aluminum spherical shell 201 to be divided into upper and lower halves for independent casting and molding, and it is convenient to first pass the lead wires of the electric heating tube 202 out of the heating ball assembly 2, and then assemble 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. Figure 3 As shown, since the inverted step 211 is located at 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, and 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 interference fit.

Claims

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

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

3. The high-efficiency boiling water generating device according to claim 2 is characterized in that: It also comprises a support column (5), wherein 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 is 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 is 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 insulation cover (3) has a cylindrical shape.

8. The high-efficiency hot water generating device according to claim 1 is 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 up-down 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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