A cold water tank with a circulation pump

Abstract

This utility model discloses a cold water tank with a circulating pump, comprising: a cold water tank with a removable cover plate on top, a water inlet valve with a transverse water outlet and capable of generating a vortex effect on the edge of the cover plate, a refrigeration evaporator fixedly installed in the central area of ​​the cover plate, the evaporation tubes of the evaporator extending into the interior of the cold water tank in a three-dimensional spiral structure, and a circulating pump built into the hollow cylindrical cavity formed by the evaporation tubes; a water inlet is provided at the bottom of the cold water tank, located outside the refrigeration evaporator and adjacent to the bottom edge of the circulating pump. Through the coordinated layout of the three-dimensional spiral evaporation tubes and the built-in circulating pump, combined with the vortex water inlet and the offset water inlet design, a three-dimensional dynamic water circulation system is formed. The vortex water inlet breaks the stratification of hot and cold water, the circulating pump drives the water to flow in forced convection along the gaps in the spiral tubes, and the placement of the water inlet near the edge of the pump accelerates the mixing of newly injected water, achieving rapid and uniform cooling of the entire water body, significantly improving cooling efficiency and temperature stability.

Description

Technical Field

[0001] This utility model relates to the field of water dispenser equipment technology, and in particular to a cold water tank with a circulating pump. Background Technology

[0002] In liquid cooling equipment such as water dispensers, the cooling efficiency and temperature uniformity of the cold water tank are core technical indicators affecting user experience. Traditional cold water tanks mostly use a static cooling mode, where heat exchange occurs through direct contact between the evaporator and the water. However, due to the lack of an effective fluid circulation mechanism inside the tank, hot and cold water stratification often occurs. Especially during water replenishment, the newly added room temperature water mixes slowly with the already cooled water, leading to localized overload in the cooling area and low overall cooling efficiency. In addition, existing evaporators mostly use flat coils or simple spiral structures, which limit their contact area with the water and lack an active circulation drive design, further exacerbating the problem of insufficient hot and cold water exchange. While the introduction of a circulation pump can improve water flow, the spatial relationship between the pump position and the evaporator and water inlet in conventional layouts lacks coordinated design, easily creating flow blind spots and failing to achieve efficient disturbance of the entire water body. These technical defects result in the equipment's cooling speed failing to meet immediate water demand, and also lead to high energy consumption and large temperature fluctuations.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a cold water tank with a circulating pump to solve the problems of low cooling speed and large temperature fluctuation in the prior art water dispensers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cold water tank with a circulating pump, comprising: a refrigeration water tank with a detachable cover plate on the top, wherein the cover plate has a water supply valve port with a transverse water outlet and capable of generating a vortex effect on its edge, a refrigeration evaporator is fixedly installed in the central area of ​​the cover plate, the evaporation tube of the refrigeration evaporator extends into the interior of the refrigeration water tank in a three-dimensional spiral structure, and a circulating pump is built into the hollow cylindrical cavity formed by the evaporation tube; a water inlet is provided at the bottom of the refrigeration water tank, the water inlet being located outside the refrigeration evaporator and adjacent to the bottom edge of the circulating pump.

[0006] In one embodiment of the present invention, a cold water pumping device connected to a cooling water tank is further included. The cold water pumping device includes a driving water pump and a pumping pipe connected to the driving water pump and extending below the liquid surface. The water inlet and the pumping pipe are respectively located at two opposite diagonal positions at the bottom of the cooling water tank.

[0007] In one embodiment of the present invention, a filter assembly is provided at the bottom of the refrigeration evaporator. The filter assembly includes an outer shell and a hanging ear structure symmetrically arranged 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.

[0008] In one embodiment of the present invention, the cover plate is connected to the main body of the cooling water tank by fasteners; the bottom surface of the cover plate is provided with an annular sealing structure, including a flange that presses against the inner wall of the tank and an elastic sealing element placed between the flanges.

[0009] In one embodiment of this utility model, the fastener is a bolt.

[0010] 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.

[0011] As described above, the cold water tank with a circulating pump of this invention has the following beneficial effects: the vortex effect generated by the water inlet valve creates a rotating disturbance field during the water intake stage, effectively breaking the stratification of hot and cold water. Combined with the directional suction of the circulating pump inside the three-dimensional spiral evaporator, a three-dimensional circulation path diffuses from the center to the bottom edge within the cold water tank. The offset water inlet and the location of the circulating pump form a dynamic pressure gradient, which forces the low-temperature water at the bottom and the newly added water at the top to convect in the gap between the spiral evaporator tubes. Combined with the expanded heat exchange surface area and enhanced turbulence characteristics of the evaporator, the refrigerant's cooling capacity can quickly penetrate to the entire water body. This synergistic design not only eliminates the flow blind zone in traditional structures, but also achieves efficient heat transfer and balanced distribution of water at different temperature layers during continuous mixing through the triple action mechanism of vortex disturbance, forced circulation, and gradient suction. This significantly shortens the cooling response time and reduces energy consumption, while ensuring the stability of the outlet water temperature and meeting immediate access needs. Attached Figure Description

[0012] 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.

[0013] Figure 1 A schematic diagram of the structure of the cold water tank with a circulating pump provided by this utility model;

[0014] Figure 2 A partial structural schematic diagram of a cold water tank with a circulating pump provided by this utility model;

[0015] Figure 3 for Figure 2 Enlarged view of detail A in the middle;

[0016] Figure 4 A schematic diagram of the circulating pump structure of the cold water tank with circulating pump provided by this utility model;

[0017] Figure 5 A schematic diagram of the structure of a cooling water tank with a circulating pump provided by this utility model.

[0018] Component designation explanation

[0019] 1. Cooling water tank; 2. Cover plate; 3. Water inlet valve; 4. Cooling evaporator; 5. Circulation pump; 6. Water inlet; 7. Water pumping pipe; 8. Drive pump; 9. Outer shell; 10. Hanging lug; 11. Fastener; 12. Flange; 13. Temperature sensing module. Detailed Implementation

[0020] This utility model provides a cold water tank with a circulating pump. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments.

[0021] In the description of this utility model, it should be understood that the terms "up, down, left, right" and other 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, and should not be construed as limiting this utility model; in addition, the terms "installation" and "connection" 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.

[0022] Please see Figures 1 to 5 This invention provides a cold water tank with a circulating pump, comprising: a refrigerated water tank 1 with a removable cover plate 2 on top; a water inlet valve 3 with a transverse water outlet and capable of generating a vortex effect on the edge of the cover plate 2; a refrigeration evaporator 4 fixedly installed in the central area of ​​the cover plate 2; the evaporation tubes of the refrigeration evaporator 4 extending into the interior of the refrigerated water tank 1 in a three-dimensional spiral structure; and a circulating pump 5 housed within a hollow cylindrical cavity formed by the evaporation tubes. A water inlet 6 is located at the bottom of the refrigeration water tank 1, positioned outside the refrigeration evaporator 4 and adjacent to the bottom edge of the circulating pump 5. Through the coordinated layout of the three-dimensional spiral evaporation tubes and the built-in circulating pump 5, combined with the vortex water inlet and the offset water inlet 6 design, a three-dimensional dynamic water circulation system is formed. The vortex water inlet breaks up the stratification of hot and cold water, the circulating pump 5 drives the water body to undergo forced convection along the gaps in the spiral tubes, and the placement of the water inlet 6 near the edge of the pump body prioritizes the extraction of low-temperature water from the bottom, while simultaneously accelerating the mixing of newly injected water, achieving rapid and uniform cooling of the entire water body, significantly improving cooling efficiency and temperature stability.

[0023] The cover plate 2 is connected to the main body of the cooling water tank 1 by fasteners 11; the bottom surface of the cover plate 2 is provided with an annular sealing structure, including a flange 12 that is pressed against the inner wall of the tank and an elastic sealing element placed between the flanges 12.

[0024] Preferably, the fastener 11 is a bolt. It is understood that the annular sealing structure, through the flexible pressing of the elastic sealing element against the inner wall of the housing, compensates for manufacturing tolerances and thermal expansion and contraction deformation, achieving dynamic sealing; the bolt connection provides uniform clamping force, avoiding seal failure caused by localized stress concentration. This dual-seal design ensures convenient disassembly and maintenance while completely eliminating the risk of leakage.

[0025] It also includes a cold water pumping device connected to the cooling water tank 1. The cold water pumping device includes a drive water pump 8 and a pumping pipe 7 connected to the drive water pump 8 and extending below the liquid surface. The water inlet 6 and the pumping pipe 7 are respectively located at two opposite diagonal positions at the bottom of the cooling water tank 1. In this embodiment, the drive water pump 8 is fixed to the cover plate 2. Specifically, the drive water pump 8 is bolted to the mounting seat on the cover plate 2, and its output shaft extends vertically downward and through the cover plate 2, connecting to the pumping pipe 7 through a quick-release pipe joint. The pumping pipe 7 extends cantilevered along the inner wall of the cover plate 2 to below the liquid surface. The pumping pipe 7 extending below the liquid surface avoids the intake of air bubbles, ensuring continuous and stable water pumping. The diagonally arranged water inlet 6 and pumping pipe 7 form a diagonal circulation path, eliminating the flow blind zone of the traditional symmetrical layout. The diagonal pressure difference enhances the secondary circulation of water in the diagonal direction within the tank, forming a compound disturbance with the main circulation path, further improving mixing efficiency, while reducing water pump energy consumption.

[0026] A filter assembly is installed at the bottom of the refrigeration evaporator 4. The filter assembly includes an outer shell 9 and symmetrically arranged lugs 10 on the main shell. The surface of the main shell is provided with an array of filter holes, which are distributed in the suction chamber area of ​​the circulating pump 5. The lug-type filter assembly can be quickly disassembled and maintained. The filter hole array precisely covers the pump suction area, effectively intercepting impurities while avoiding excessive pressure loss. In addition, the symmetrical lugs 10 structure ensures that the filter assembly is installed firmly, preventing displacement due to water flow impact. This protects the circulating pump 5, maintains unobstructed water flow, and extends the service life of the equipment.

[0027] The bottom of the cooling water tank 1 integrates a temperature sensing module 13, 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 6. The flexible heat-conducting sheet is in close contact with the water inlet 6 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.

[0028] In summary, this utility model's cold water tank with a circulating pump effectively utilizes fluid dynamics principles to create a continuous vortex effect by setting the water inlet 3 as a horizontal outlet structure and cooperating with the circulating pump 5. During water replenishment, the horizontal water flow impacts the side wall of the tank, generating rotational kinetic energy. Combined with the directional drive of the water flow within the hollow cylindrical cavity by the circulating pump 5, the newly added room-temperature water and the already cooled water form turbulent mixing in three-dimensional space, significantly improving the heat exchange efficiency of water at different temperature levels. The evaporator 4 adopts a three-dimensional spiral tube structure to expand the heat exchange area. The water inlet 6, offset from the outside of the evaporator 4, continuously draws the low-temperature water mixed by the vortex, simultaneously guiding the cold water at the bottom of the tank upwards to form a dynamic circulation loop. This multi-dimensional collaborative structure breaks the stratification effect of traditional cold water tanks, keeping the water inside the tank in a homogeneous low-temperature state. This not only significantly shortens the refrigeration cycle but also reduces the compressor start-stop frequency by reducing temperature gradient differences, achieving a technological breakthrough in energy saving and consumption reduction while improving refrigeration efficiency. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0029] 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 cold water tank having a circulation pump, characterized by, include: A cooling water tank (1) with a removable cover plate (2) on top is provided. The cover plate (2) has a water supply valve (3) with a horizontal water outlet and a vortex effect on its edge. A cooling evaporator (4) is fixedly installed in the central area of ​​the cover plate (2). The evaporation tube of the cooling evaporator (4) extends into the interior of the cooling water tank (1) in a three-dimensional spiral structure. A circulation pump (5) is built into the hollow columnar cavity formed by the evaporation tube. A water inlet (6) is provided at the bottom of the cooling water tank (1). The water inlet (6) is located outside the cooling evaporator (4) and is located near the bottom edge of the circulation pump (5).

2. The cold water tank with a circulation pump according to claim 1, characterized in that, It also includes a cold water pumping device connected to the cooling water tank (1). The cold water pumping device includes a driving water pump (8) and a pumping pipe (7) connected to the driving water pump (8) and extending below the liquid surface. The water inlet (6) and the pumping pipe (7) are respectively located at two opposite diagonal positions at the bottom of the cooling water tank (1).

3. The cold water tank with a circulation pump according to claim 1, characterized in that, The bottom of the refrigeration evaporator (4) is provided with a filter assembly, which includes an outer shell (9) and symmetrically arranged hanging ears (10) on the main shell. The surface of the main shell is provided with a filter hole array, which is distributed on the suction chamber area of ​​the circulating pump (5).

4. The cold water tank with a circulation pump according to claim 1, characterized in that, The cover plate (2) is connected to the main body of the cooling water tank (1) by fasteners (11); the bottom surface of the cover plate (2) is provided with an annular sealing structure, including a flange (12) pressed against the inner wall of the tank and an elastic sealing element placed between the flanges (12).

5. The cold water tank with a circulation pump according to claim 4, characterized in that, The fastener (11) is a bolt.

6. The cold water tank with a circulation pump according to claim 1, characterized in that, The bottom of the cooling water tank (1) is integrated with a temperature sensing module (13), 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 (6).

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