Water dispenser with overflow tube

Abstract

The utility model discloses a water dispenser with overflow pipe, the coaxial fixed mounting of cover plate center area has refrigeration evaporimeter and pure water pipe, and the hollow cylindrical cavity that the evaporation pipe of refrigeration evaporimeter surrounds forms is provided with circulating pump, and the water replenishing valve mouth that cover plate edge is equipped with transverse water outlet and can produce vortex effect, wherein the pipe mouth of overflow pipe is located below the water replenishing valve mouth. When the water replenishing valve mouth transverse water outlet causes vortex effect, overflow pipe passes through real -time discharge excess water body, both the liquid level violent fluctuation caused by water injection impact is buffered, and through the dynamic regulation water level height in water tank, the vortex intensity is controlled in the reasonable range of promoting cold and hot water mixing but not excessive damage temperature field, effectively avoid the cold loss caused by water flow impact in traditional water replenishing mode, and the local temperature gradient anomaly caused by vortex disorder diffusion is inhibited, and the double interference problem of water flow impact and vortex disturbance to temperature field in the water injection process is solved.

Description

Technical Field

[0001] This utility model relates to the field of water dispenser technology, and in particular to a water dispenser with an overflow pipe. Background Technology

[0002] Currently, commercially available water dispensers generally adopt direct contact heat exchange or single-layer coil refrigeration architectures, which suffer from problems such as insufficient heat exchange efficiency, slow cooling response, and high energy consumption. Specifically, in traditional refrigeration devices, the evaporator pipes and water flow channels are mostly in a planar topology or a simple nested structure. This spatial configuration limits the heat interaction path between the refrigerant and the water, making it difficult to expand the effective contact area, thus making it difficult to achieve a rapid and uniform thermal equilibrium during the cooling process.

[0003] Under continuous water supply conditions, the existing system exhibits significant shortcomings: turbulent disturbances caused by dynamic water replenishment result in severe temperature fluctuations, forcing the equipment to frequently activate secondary heating modules to maintain the set temperature, thus generating additional energy consumption. More critically, the current water replenishment mechanism mostly adopts an axial water injection mode. This design fails to effectively coordinate the matching relationship between water flow rate and refrigeration system response speed, leading to a significant mixing effect between cold water and warm water, forming a clear temperature gradient stratification phenomenon, which severely restricts the overall cooling efficiency.

[0004] From a structural design perspective, existing refrigeration components and water storage units are mostly implemented in a separate layout. This architecture not only exacerbates cold loss but also makes maintenance difficult due to assembly complexity, thus affecting the equipment's lifespan. It is worth noting that the coupling effect between fluid dynamics and temperature field regulation during water replenishment has not been effectively controlled, resulting in an unbalanced thermal distribution within the water tank and consistently low temperature control accuracy. In summary, how to reconstruct the spatial coordination between the refrigeration unit and the water system to improve heat transfer performance, and how to establish a dynamically balanced rapid cooling circulation system, have become core issues for overcoming the bottlenecks in existing drinking water refrigeration technology. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a water dispenser with an overflow pipe to solve the problem of weak cooling performance of water dispensers in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a water dispenser with an overflow pipe, comprising: a refrigerated water tank fixedly installed on a mounting base, the top of the refrigerated water tank being provided with a detachable cover plate; a refrigerated evaporator and a pure water pipe being coaxially fixedly installed in the central area of ​​the cover plate, the evaporation tube of the refrigerated evaporator extending into the interior of the refrigerated water tank in a three-dimensional spiral structure; the pure water pipe forming a hollow cuboid frame in a three-dimensional spiral structure, and an annular cooling channel being formed between the outer wall of the refrigerated evaporator and the inner wall of the pure water pipe; a circulation pump being installed in the hollow cylindrical cavity formed by the evaporation tube of the refrigerated evaporator, the circulation pump being fixed to the bottom of the refrigerated water tank; a water inlet valve port with a transverse water outlet and capable of generating a vortex effect being provided on the edge of the cover plate, and also including a water inlet and an overflow pipe, the cover plate being provided with a water inlet port with an airtight valve, the water outlet end of the water inlet port being provided with the water inlet valve port, and the outlet of the overflow pipe being located below the water inlet valve port.

[0007] In one embodiment of the present invention, a cold water pumping device is also provided on the cover plate, including a drive water pump fixed on the cover body; a pumping pipe, one end of which is connected to the water inlet of the drive water pump, and the other end of which extends below the liquid surface of the cooling water tank; the pumping pipe is arranged outside the cooling channel, and is located radially outside and inside the refrigeration evaporator, respectively, along with the circulating pump.

[0008] In one embodiment of the present invention, the bottom of the cooling water tank is provided with a water inlet, which is located outside the cooling evaporator and adjacent to the bottom edge of the circulating pump.

[0009] In one embodiment of the present invention, a temperature sensing module is integrated at the bottom of the cooling water tank. The temperature sensing module includes a flexible heat-conducting sheet and a digital temperature probe connected together. The flexible heat-conducting sheet is positioned close to the water inlet.

[0010] In one embodiment of this utility model, an infrared liquid level sensing component is provided in the communicating vessel connected to the cooling water tank, including a high water level sensor near the top of the tank and a low water level sensor near the bottom of the tank.

[0011] In one embodiment of the present invention, a raw water tank is provided on the mounting base; a filter assembly is connected between the raw water tank and the purified water tank, the filter assembly includes a filter element and a filter element cylinder, the filter element cylinder is fixed on the mounting base, and the filter element is inserted into the filter element cylinder through an opening at the top of the filter element cylinder.

[0012] In one embodiment of the present invention, an integrated control system is also included, comprising a controller connected to the display screen via a cable, an adapter electrically connected to the controller, and a signal processor connected to the high water level sensor and the low water level sensor respectively.

[0013] In one embodiment of the present invention, a radiator and a compressor connected to the refrigeration evaporator are also included. The compressor is fixed directly below the refrigeration water tank by a mounting base, and the radiator is disposed around the compressor.

[0014] In one embodiment of the present invention, an insulation layer is further included on the outer surface of the cooling water tank, wherein the insulation layer is a composite insulation structure composed of a polyurethane foam layer.

[0015] As described above, the water dispenser with an overflow pipe of this utility model has the following beneficial effects: by designing the evaporator tube of the refrigeration evaporator as a three-dimensional spiral structure, the contact area between the refrigerant and water is significantly increased, accelerating the heat exchange efficiency; the annular cooling channel formed by the pure water pipes ensures uniform distribution of cooling energy, avoiding the concentrated loss of cooling energy caused by the traditional straight pipe structure; the transverse vortex water replenishment valve port on the edge of the cover plate is optimized through fluid dynamics, promoting rapid and balanced water tank temperature replenishment, shortening the cooling time and improving water temperature uniformity; and the overflow pipe balances the water injection impact force and vortex effect, ensuring a smooth water replenishment process without affecting the temperature field inside the water tank, maintaining efficient system operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a water dispenser with an overflow pipe provided by this utility model;

[0018] Figure 2 A partial structural schematic diagram of a water dispenser with an overflow pipe provided by this utility model;

[0019] Figure 3 A schematic diagram of a portion of the coil structure of a water dispenser with an overflow pipe provided by this utility model;

[0020] Figure 4 A partial structural schematic diagram of a water dispenser with an overflow pipe provided by this utility model;

[0021] Figure 5 for Figure 4 Enlarged view of detail A in the middle;

[0022] Figure 6 A schematic diagram of the cooling water tank structure of a water dispenser with an overflow pipe provided by this utility model;

[0023] Figure 7A partial structural diagram of the cooling water tank of a water dispenser with an overflow pipe provided by this utility model;

[0024] Figure 8 A schematic diagram of the circulating pump structure of a water dispenser with an overflow pipe provided by this utility model.

[0025] Component designation explanation

[0026] 1. Mounting base; 2. Cooling water tank; 3. Cover plate; 4. Refrigeration evaporator; 5. Pure water pipe; 6. Cooling channel; 7. Circulation pump; 8. Water inlet valve; 9. Drive pump; 10. Pumping pipe; 11. Water outlet; 12. Temperature sensing module; 13. High water level sensor; 14. Low water level sensor; 15. Water inlet; 16. Overflow pipe; 17. Raw water tank; 18. Clean water tank; 19. Filter element; 20. Filter cartridge; 21. Display screen; 22. Controller; 23. Adapter; 24. Radiator; 25. Compressor. Detailed Implementation

[0027] This utility model provides a water dispenser with an overflow pipe. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and embodiments. In the description of this utility model, it should be understood that the terms "up, down, left, right," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; they should not be construed as limitations on this utility model. Furthermore, the terms "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Please see Figures 1 to 8This utility model provides a water dispenser with an overflow pipe, comprising: a chilled water tank 2 fixedly installed on a mounting base 1, the top of the chilled water tank 2 being provided with a detachable cover plate 3; a chilled evaporator 4 and a pure water pipe 5 coaxially fixedly installed in the central area of ​​the cover plate 3, the evaporation tube of the chilled evaporator 4 extending into the interior of the chilled water tank 2 in a three-dimensional spiral structure; the pure water pipe 5 forming a hollow cuboid frame in a three-dimensional spiral structure, and an annular cooling channel 6 forming between the outer wall of the chilled evaporator 4 and the inner wall of the pure water pipe 5; a circulation pump 7 being provided in the hollow cylindrical cavity formed by the evaporation tube of the chilled evaporator 4, the circulation pump 7 being fixed to the bottom of the chilled water tank 2; and a water inlet 8 with a transverse water outlet and capable of generating a vortex effect being provided on the edge of the cover plate 3. It also includes a water inlet 15 and an overflow pipe 16. The cover plate 3 is provided with a water inlet 15 equipped with an airtight valve. The water outlet end of the water inlet 15 is provided with the water replenishment valve 8. The outlet of the overflow pipe 16 is located below the water replenishment valve 8. The water inlet 15 is equipped with an airtight valve to prevent external heat from entering during water addition. The overflow pipe 16 is located below the water replenishment valve 8 to balance the water injection impact force and eddy current effect, ensuring a smooth water replenishment process without affecting the temperature field inside the water tank and maintaining efficient system operation.

[0029] Please see Figure 3 The water dispenser employs a coaxially arranged three-dimensional spiral structure evaporator tube and pure water pipe 5, combined with the synergistic design of the circulating pump 7 and annular cooling channel 6, significantly improving the cooling efficiency and water temperature control accuracy. The three-dimensional spiral structure evaporator tube and pure water pipe 5 form a highly efficient heat exchange system within the cold water tank, greatly increasing the contact area between cold water and the evaporation medium and accelerating heat transfer. In addition, the vortex effect generated by the water inlet valve 8 creates a rotating disturbance field during the water inlet stage, effectively breaking the stratification of hot and cold water. Combined with the directional suction of the circulating pump 7 inside the three-dimensional spiral evaporator 4, a three-dimensional circulation path diffuses from the center to the bottom edge within the cooling water tank 2. The offset water inlet 11 and the position of the circulating pump 7 form a dynamic pressure gradient, causing the low-temperature water at the bottom and the newly added water at the top to undergo forced convection in the gaps between the spiral evaporator tubes. Combined with the expanded heat exchange surface area and enhanced turbulence characteristics of the evaporator 4, the refrigerant's cooling capacity can quickly penetrate to the entire water body.

[0030] It also includes a cold water pumping device mounted on the cover plate 3, comprising a drive water pump 9 fixed to the cover body; a pumping pipe 10, one end of which is connected to the water inlet of the drive water pump 9, and the other end extending below the liquid surface of the cooling water tank 2; the pumping pipe 10 is arranged outside the cooling channel 6, and is located radially outside and inside the refrigeration evaporator 4, respectively, along with the circulating pump 7. The cold water pumping device, through the independently arranged pumping pipe 10 and the circulating pump 7, is positioned on the inner and outer sides of the refrigeration evaporator 4, avoiding interference with the water flow path and improving pumping efficiency; the drive water pump 9 is fixed to the cover body, reducing vibration transmission, ensuring a stable and reliable pumping process, and optimizing the stratified management of hot and cold water, reducing energy loss.

[0031] The cooling water tank 2 has a water inlet 11 at its bottom, located outside the evaporator 4 and near the bottom edge of the circulation pump 7. This location ensures that the water drawn is fully cooled low-temperature water, avoiding interference from uncooled areas and guaranteeing stable and consistent outlet water temperature. When the circulation pump 7 is in standby mode, the low-positioned water inlet 11, combined with the three-dimensional spiral evaporator 4, utilizes gravitational potential energy to preferentially draw low-temperature water from the bottom layer, avoiding disturbance to the upper warm water layer and further stabilizing the water temperature stratification structure. Simultaneously, the cooling channel 6 is designed to guide the water flow evenly, reducing local eddies and improving cooling uniformity.

[0032] The bottom of the cooling water tank 2 integrates a temperature sensing module 12, which includes a flexible heat-conducting sheet and a digital temperature probe connected together. The flexible heat-conducting sheet is positioned close to the water inlet 11. The flexible heat-conducting sheet is in close contact with the water inlet 11 area, capturing in real-time the bottom water temperature data closest to the outlet water temperature. The direct coupling between the digital probe and the heat-conducting sheet reduces temperature measurement lag, achieving precise feedback control. This integrated sensing module provides a high-precision data foundation for the intelligent temperature control system, ensuring accurate control of the outlet water temperature fluctuation range.

[0033] An infrared liquid level sensing component is installed in the communicating vessel (not shown) connected to the cooling water tank (2), including a high water level sensor 13 near the top of the tank and a low water level sensor 14 near the bottom of the tank. Specifically, the communicating vessel is equipped with a high water level sensor 13 and a low water level sensor 14. The high water level sensor 13 is installed at a preset distance below the top of the communicating vessel. When the liquid level in the ice-making water tank 2 rises to near overflow, the change in the liquid's refractive index triggers a sensor signal, sending a high water level alarm to the control system. The low water level sensor 14 is fixed at a safe position above the bottom of the communicating vessel. By detecting the absorption / reflection of infrared light by the liquid surface, it monitors the lowest liquid level in the ice-making water tank 2 in real time. The infrared liquid level sensing component monitors the water tank level in real time through the high water level sensor 13 and the low water level sensor 14, automatically controlling water replenishment or stopping water addition to prevent overflow or dry burning, improving safety and reducing the need for manual intervention. In the absence of liquid, the infrared light emitted by the infrared liquid level sensing component is deflected 180° inside the prism, resulting in emission, which is then received by the receiving tube. When liquid is present, the emitted infrared light passes through the prism without emission, and the receiving tube cannot receive the signal. Both the high-water-level sensor 13 and the low-water-level sensor 14 employ an integrated infrared emission-reception structure, containing an infrared LED light source, a prism reflector, and a photoelectric receiving tube. When water is added to the refrigerator body, the liquid submerges the prism portion of the sensor, altering the infrared light refraction path. The receiving tube, unable to receive the reflected light, outputs a low-level signal. When the water level drops to a point where the sensor is no longer covered by liquid, the prism returns to total reflection, and the receiving tube receives the light signal and outputs a high-level signal. The control circuit determines the water level status based on the signal combination from two sensors: if the high water level sensor 13 is triggered and the low water level sensor 14 is not triggered, the water level is normal and the refrigeration system can operate; if both the high water level sensor 13 and the low water level sensor 14 are triggered, the water level is too low, triggering a water shortage alarm and stopping refrigeration; if both the high water level sensor 13 and the low water level sensor 14 are triggered, the water level is abnormal (such as an overflow fault), triggering an alarm and closing the inlet valve; if neither the high water level sensor 13 nor the low water level sensor 14 are triggered, the tank is empty, prompting the user to add water.

[0034] It also includes a raw water tank 17 mounted on the mounting base 1; and a filter assembly connected between the raw water tank 17 and the purified water tank 18. The filter assembly includes a filter element 19 and a filter cartridge 20. The filter cartridge 20 is fixed to the mounting base 1, and the filter element 19 is inserted into the filter cartridge 20 through an opening at the top of the filter cartridge 20. The separate design of the raw water tank 17 and the filter assembly facilitates water source management, and the filter element 19 can be plugged in and replaced, simplifying the maintenance process. The filter cartridge 20 is fixed to the mounting base 1, improving structural stability while ensuring filtration effect and extending the service life of the equipment.

[0035] Please see Figure 8In this embodiment, the filter assembly further includes an outer shell and symmetrically arranged lug structures on the main shell. The surface of the main shell is provided with a filter hole array, which is distributed in the suction chamber area of ​​the circulating pump 7. The lug-type filter assembly allows for quick installation and maintenance, and the filter hole array precisely covers the pump's suction area, effectively intercepting impurities while avoiding excessive pressure loss. Furthermore, the symmetrical lug structure ensures the filter assembly is securely installed, preventing displacement due to water flow impact, thus protecting the circulating pump 7 and maintaining unobstructed water flow, extending the service life of the circulating pump 7.

[0036] It also includes an integrated control system, comprising a controller 22 connected to the display screen 21 via cables, an adapter 23 electrically connected to the controller 22, and signal processors connected to the high water level sensor 13 and the low water level sensor 14, respectively. The integrated control system, through signal processing and linkage with the controller 22, automatically coordinates functions such as cooling, water replenishment, and temperature monitoring, achieving intelligent multi-parameter control and improving user operation convenience and system reliability. Specifically, it also includes a heater, comprising a heater and a purified water tank 18 connected by sequential piping. The heater has an independent temperature control circuit that interacts with the display screen 21. Through the linkage design of the heater and the purified water tank 18, efficient integration of water production, heating, and storage functions is achieved. The interaction between the independent temperature control circuit and the display screen 212 allows users to precisely adjust the water temperature, avoiding the risk of overheating. Simultaneously, the isolated layout of the heater and the purified water tank 18 reduces heat loss and improves energy efficiency.

[0037] It also includes a radiator 24 and a compressor 25 connected to the evaporator 4. The compressor 25 is fixed directly below the chilled water tank 2 by a mounting base 1, and the radiator 24 is arranged around the compressor 25. Fixing the compressor 25 directly below the chilled water tank 2 shortens the refrigerant delivery path and reduces energy consumption; the surrounding radiator 24 optimizes heat dissipation efficiency, prevents the compressor 25 from overheating, improves the reliability and operational stability of the refrigeration system, and accelerates the circulation of heat dissipation airflow, improving refrigerant compression efficiency and reducing energy consumption.

[0038] It also includes an insulation layer covering the outer surface of the cooling water tank 2, which is a composite insulation structure composed of polyurethane foam. The polyurethane foam insulation layer effectively reduces heat exchange on the outer wall of the water tank, reduces the impact of the external environment on the water temperature, extends the cooling interval, reduces the start-stop frequency of the compressor 25, and balances energy saving and insulation performance.

[0039] In summary, the water dispenser with an overflow pipe of this invention, when water is injected into the water supply valve 8 through the water inlet 15, the vortex generated by the horizontal water outlet structure drives the water in the tank to mix thoroughly. Meanwhile, the overflow pipe 16, positioned below the water supply valve 8, diverts a portion of the water flow to the external circulation loop, forming a dynamic diversion mechanism. This design significantly reduces the instantaneous disturbance of the temperature field inside the tank caused by direct water injection, retaining the efficiency advantage of vortex-enhanced heat exchange while achieving precise matching between the water supply rate and the cooling rate through the buffering effect of the overflow pipe 16. The resulting dual-channel fluid control system ensures that the hot and cold water in the tank remains in a laminar diffusion state, avoiding the temperature stratification and cold energy loss problems caused by traditional vertical water injection, and guaranteeing continuous and efficient heat exchange between the evaporator and the annular cooling channel. Ultimately, while maintaining temperature field uniformity, the system reduces secondary heating energy consumption caused by water temperature fluctuations. Through the coupling effect of fluid dynamics optimization and thermodynamic balance, it achieves a low-energy-consumption, high-stability, and rapid cooling cycle. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0040] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A water dispenser having a spillway, characterized by, include: A refrigerated water tank (2) is fixedly installed on a mounting base (1). The top of the refrigerated water tank (2) is provided with a removable cover plate (3). A refrigerated evaporator (4) and a pure water pipe (5) are coaxially fixedly installed in the central area of ​​the cover plate (3). The evaporation tube of the refrigerated evaporator (4) extends into the interior of the refrigerated water tank (2) in a three-dimensional spiral structure. The pure water pipe (5) forms a hollow cuboid frame in a three-dimensional spiral structure. An annular cooling channel (6) is formed between the outer wall of the refrigerated evaporator (4) and the inner wall of the pure water pipe (5). A circulation pump (7) is installed in the hollow cylindrical cavity formed by the evaporation tubes of the refrigeration evaporator (4). The circulation pump (7) is fixed to the bottom of the refrigeration water tank (2). The edge of the cover plate (3) is provided with a water supply valve (8) that can generate a vortex effect and has a transverse water outlet. It also includes a water inlet (15) and an overflow pipe (16). The cover plate (3) is provided with a water inlet (15) with an airtight valve. The water outlet of the water inlet (15) is provided with the water supply valve (8). The outlet of the overflow pipe (16) is located below the water supply valve (8).

2. A water dispenser with a spillway as claimed in claim 1, characterized in that It also includes a cold water pumping device on the cover plate (3), which includes a drive water pump (9) fixed on the cover; a pumping pipe (10), one end of which is connected to the water inlet of the drive water pump (9), and the other end extends to below the liquid surface of the cooling water tank (2); the pumping pipe (10) is arranged outside the cooling channel (6), and is located radially outside and inside the refrigeration evaporator (4) along with the circulation pump (7).

3. A water dispenser with a spillway as claimed in claim 2, characterized in that The bottom of the cooling water tank (2) is provided with a water inlet (11), which is located outside the cooling evaporator (4) and near the bottom edge of the circulating pump (7).

4. A water dispenser with a spillway as claimed in claim 3, characterized in that The bottom of the cooling water tank (2) is integrated with a temperature sensing module (12), which includes a flexible heat-conducting sheet and a digital temperature probe connected together. The flexible heat-conducting sheet is located near the water inlet (11).

5. The water dispenser with overflow tube of claim 1, wherein, An infrared liquid level sensing component is provided in the communicating vessel connected to the cooling water tank (2), including a high water level sensor (13) near the top of the tank and a low water level sensor (14) near the bottom of the tank.

6. A water dispenser with a spillway as claimed in claim 5, characterized in that It also includes a raw water tank (17) mounted on the mounting base (1); and a filter assembly connected between the raw water tank (17) and the purified water tank (18). The filter assembly includes a filter element (19) and a filter element cylinder (20). The filter element cylinder (20) is fixed on the mounting base (1), and the filter element (19) is inserted into the filter element cylinder (20) through an opening at the top of the filter element cylinder (20).

7. The water dispenser with an overflow pipe according to claim 5, characterized in that, It also includes an integrated control system, comprising a controller (22) connected to the display screen (21) via a cable, an adapter (23) electrically connected to the controller (22), and a signal processor connected to the high water level sensor (13) and the low water level sensor (14) respectively.

8. The water dispenser with an overflow pipe according to claim 1, characterized in that, It also includes a radiator (24) and a compressor (25) connected to the refrigeration evaporator (4). The compressor (25) is fixed directly below the refrigeration water tank (2) by a mounting base (1). The radiator (24) is located around the compressor (25).

9. The water dispenser with an overflow pipe according to claim 1, characterized in that, It also includes an insulation layer covering the outer surface of the cooling water tank (2), the insulation layer being a composite insulation structure composed of polyurethane foam.

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