Water dispenser capable of fast refrigeration

Abstract

The utility model discloses a kind of water dispensers of quick refrigeration, evaporation pipe and pure water pipe are extended to the inside of cold water tank;Evaporation pipe is hollow cylindrical cavity and is formed by three-dimensional spiral structure enclosure, and pure water pipe is hollow cuboid frame and is formed by three-dimensional spiral structure enclosure;Cylindrical cavity of evaporation pipe is provided with circulating pump, and circulating pump is fixed in the bottom of cold water tank by support.By the coaxial three-dimensional spiral layout of evaporation pipe and pure water pipe, the cylindrical cavity and cuboid frame structure of inside and outside nesting are formed, and the contact area and heat exchange path of refrigerant and pure water are greatly increased.Circulating pump is built-in in evaporation pipe cavity bottom, and directly acts on cooling channel core area when driving refrigerant high-speed circulation, cooperate annular cooling channel formed by evaporation pipe outer wall and pure water pipe inner wall, realize the directional diffusion of cold quantity from center to periphery, and refrigeration response time is significantly shortened.

Description

Technical Field

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

[0002] With the fast pace of modern life, people have higher requirements for the cooling efficiency of water dispensers. Traditional water dispensers typically use direct cooling or simple spiral tube cooling structures, which suffer from slow cooling speed, high energy consumption, and uneven temperature distribution. Specifically, in existing technologies, the cooling pipes and pure water pipes are mostly arranged in parallel or have a simple winding structure, resulting in limited heat exchange area and low cold energy transfer efficiency. The flow path of the refrigerant in the evaporator tube lacks coordination with the flow direction of the pure water, often leading to localized overcooling or unstable temperature gradients, affecting the uniformity of cooling. In addition, the core cooling components mostly use a fixed installation structure, requiring complete disassembly of the equipment for maintenance, making cleaning difficult and prone to causing seal failure.

[0003] Of particular concern is that in traditional designs, the circulating pump is typically externally mounted on the side wall of the water tank, which not only takes up space but also can cause pipe connections to loosen due to vibration. Furthermore, the layout of the evaporator and pure water pipes does not form an effective three-dimensional heat exchange network, resulting in only single-layer heat exchange between the refrigerant and pure water, with a cooling capacity utilization rate of less than 40%. This leads to users waiting for cold water for more than 10 minutes in high-temperature environments, and the equipment is prone to condensation buildup during long-term operation, posing hygiene and safety hazards. Therefore, there is an urgent need for a water dispenser solution that can achieve rapid cooling, has a compact structure, and is easy to maintain. 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 water dispenser that can cool down quickly, so as to solve the problem of poor cooling effect of water dispensers in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a water dispenser capable of rapid cooling, comprising a cold water tank and a cover plate covering the opening at the top of the cold water tank, characterized in that: an evaporation tube and a pure water tube are fixedly installed on the cover plate, both of which extend into the interior of the cold water tank; the evaporation tube is arranged in a three-dimensional spiral structure to form a hollow cylindrical cavity, and the pure water tube is arranged in a three-dimensional spiral structure to form a hollow cuboid frame;

[0006] A circulation pump is installed inside the cylindrical cavity of the evaporator tube, and the circulation pump is fixed to the bottom of the cold water tank by a bracket; an annular cooling channel is formed between the outer wall of the evaporator tube and the inner wall of the pure water tube.

[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; 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 cold water tank; the pumping pipe is arranged outside the cooling channel, and is located radially outside and inside the evaporator tube, respectively, along with the circulation pump.

[0008] In one embodiment of the present invention, a temperature sensor is provided at the bottom of the cold water tank. The temperature sensor and the water inlet end of the water pump are symmetrically distributed along the central axis of the cold water tank and are located on the inner walls of opposite sides of the cold water tank.

[0009] In one embodiment of the present invention, the cold water tank includes an inner liner made of 304 stainless steel; and an insulation layer covering the outer surface of the inner liner, wherein the insulation layer is a composite structure of vacuum insulation board and polyurethane foam material.

[0010] In one embodiment of the present invention, a positioning mechanism is provided between the cover plate and the cold water tank, including at least three limiting protrusions evenly distributed around the periphery and located on the edge of the opening of the cold water tank; limiting grooves corresponding to the limiting protrusions are opened on the edge of the cover plate; and an elastic sealing ring is embedded between the bottom surface of the cover plate and the top surface of the opening of the cold water tank.

[0011] In one embodiment of this utility model, the evaporation tube and the pure water tube are fixed to the cover plate by a threaded quick-release connection structure. The threaded quick-release connection structure includes a threaded connector at the end of the tube body, with a large-pitch external thread on the outer surface; a corresponding threaded interface on the cover plate, the threaded interface having an internal thread that mates with the external thread; and an elastic sealing sleeve fitted at the root of the threaded connector.

[0012] As described above, the water dispenser with a rapid cooling pipe of this invention has the following beneficial effects: By adopting a coaxial three-dimensional spiral structure evaporator pipe and pure water pipe, combined with the synergistic design of a circulating pump and annular cooling channel, the cooling efficiency and water temperature control accuracy of the water dispenser are significantly improved. The three-dimensional spiral structure evaporator pipe and pure water pipe form a highly efficient heat exchange system in the cold water tank, greatly increasing the contact area between cold water and the evaporation medium and accelerating heat transfer; the circulating pump is placed in the hollow cavity of the evaporator pipe and fixed to the bottom of the cold water tank, optimizing the water flow circulation path to make the water temperature distribution in the cold water tank more uniform and avoid excessive local temperature differences; the annular cooling channel, through the tight fit between the outer wall of the evaporator pipe and the inner wall of the pure water pipe, achieves efficient heat exchange between the cooling medium and cold water, further enhancing the cooling effect. In addition, the coaxial structure design effectively reduces cold loss, and together with the stable operation of the circulating pump, keeps the water temperature within the set range, thereby achieving precise water temperature control while rapidly cooling, meeting users' needs for the immediacy and stability of low-temperature drinking water. Attached Figure Description

[0013] 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.

[0014] Figure 1 A schematic diagram of the structure of the water dispenser capable of rapid cooling provided by this utility model;

[0015] Figure 2 A partial structural schematic diagram of the water dispenser capable of rapid cooling provided by this utility model;

[0016] Figure 3 This is a partial structural diagram of the water dispenser capable of rapid cooling provided by this utility model.

[0017] Component designation explanation

[0018] 1. Cold water tank; 2. Cover plate; 3. Evaporator tube; 4. Pure water pipe; 5. Circulation pump; 6. Cooling channel; 7. Drive water pump; 8. Pumping pipe; 9. Temperature sensor; 10. Limiting boss; 11. Limiting groove; 12. Threaded quick-release connection structure. Detailed Implementation

[0019] This utility model provides a water dispenser capable of rapid cooling. 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.

[0020] 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.

[0021] Please see Figures 1 to 3This utility model provides a water dispenser with a rapid cooling pipe, including a cold water tank 1 and a cover plate 2 covering the opening at the top of the cold water tank 1. The feature is that an evaporation pipe 3 and a pure water pipe 4 are coaxially arranged and fixedly installed on the cover plate 2, both extending into the interior of the cold water tank 1. The evaporation pipe 3 forms a hollow cylindrical cavity with a three-dimensional spiral structure, and the pure water pipe 4 forms a hollow cuboid frame with a three-dimensional spiral structure. A circulation pump 5 is installed within the cylindrical cavity of the evaporation pipe 3, and the circulation pump 5 is fixed to the bottom of the cold water tank 1 by a bracket. An annular cooling channel 6 is formed between the outer wall of the evaporation pipe 3 and the inner wall of the pure water pipe 4. Through the coaxial three-dimensional spiral arrangement of the evaporation pipe 3 and the pure water pipe 4, a nested cylindrical cavity and cuboid frame structure is formed, significantly increasing the contact area and heat exchange path between the refrigerant and the pure water. The circulating pump 5 is built into the bottom of the evaporator tube 3 cavity. When driving the refrigerant to circulate at high speed, it directly acts on the core area of ​​the cooling channel 6. Together with the annular cooling channel 6 formed by the outer wall of the evaporator tube 3 and the inner wall of the pure water pipe 4, it realizes the directional diffusion of cold energy from the center to the periphery, significantly shortening the cooling response time. The three-dimensional spiral structure simultaneously optimizes the fluid turbulence effect, eliminates the cold energy transfer blind zone caused by traditional straight pipelines, and ensures that cooling efficiency and temperature uniformity are improved simultaneously.

[0022] It also includes a cold water pumping device mounted on the cover plate 2, comprising a drive water pump 7 fixed to the cover; and a pumping pipe 8, one end of which is connected to the inlet of the drive water pump 7, and the other end extending below the liquid surface of the cold water tank 1. The pumping pipe 8 is arranged outside the cooling channel 6, and is located radially outside and inside the evaporator pipe 3, respectively, along with the circulation pump 5. Arranging the pumping pipe 8 of the cold water pumping device outside the cooling channel 6 creates a radial spatial separation from the inner circulation pump 5, effectively isolating the flow field interference between refrigerant circulation and pure water extraction. The drive water pump 7 is fixed above the cover plate 2, avoiding disturbance to the internal flow of the cold water tank 1 by a traditional side-mounted water pump. At the same time, the cooling capacity of the outer wall of the evaporator pipe 3 is used to pre-cool the pumping pipe 8, achieving secondary cooling during the extraction process and further improving the stability of the outlet water temperature.

[0023] A temperature sensor 9 is installed at the bottom of the cold water tank 1. The temperature sensor 9 and the water inlet of the water pump pipe 8 are symmetrically distributed along the central axis of the cold water tank 1, located on opposite inner walls of the tank. This symmetrical spatial arrangement eliminates local errors in unilateral temperature detection. Their placement on opposite inner walls allows for simultaneous monitoring of the temperature difference between the refrigeration core area and the water intake area, dynamically calibrating the operating parameters of the refrigeration system, avoiding control lag caused by temperature gradients, and ensuring uniform water temperature and accurate temperature control throughout the tank.

[0024] The cold water tank 1 includes an inner liner made of 304 stainless steel and an insulation layer covering the outer surface of the inner liner. This insulation layer is a composite structure of a vacuum insulation panel and polyurethane foam. The combination of the 304 stainless steel inner liner and the composite insulation layer utilizes the high thermal conductivity of the 304 stainless steel to accelerate the distribution of cold energy within the tank, while the vacuum insulation panel and polyurethane foam work together to form a gradient insulation barrier, effectively blocking external heat intrusion. This combination ensures cooling efficiency while reducing cold loss, maintaining low-temperature stability during rapid cooling and reducing equipment energy consumption. Specifically, the composite structure of the vacuum insulation panel and polyurethane foam optimizes insulation in the following ways: the vacuum insulation panel (VIP), as the inner core insulation material, significantly reduces heat conduction and convection losses due to its internal vacuum environment, achieving a thermal conductivity as low as 0.005 W / (m·K), forming the first highly efficient heat barrier; the outer polyurethane foam fills the gaps in the VIP with a closed-cell structure and wraps around its perimeter, further blocking heat radiation paths while providing mechanical support and moisture protection. The two layers of materials are tightly bonded together through an integrated molding process, which avoids the volume expansion problem caused by the increased thickness of traditional single insulation layers. Furthermore, the gradient thermal conductivity design achieves a gradual attenuation of heat transfer across each layer—the VIP layer undertakes the main insulation task, while the polyurethane layer mitigates the edge thermal bridging effect through density transition. Compared to single-material insulation layers, the composite structure achieves superior insulation performance at the same thickness. The rapid cooling characteristics of the 304 stainless steel inner liner complement the long-term cold-locking capability of the composite insulation layer: the inner liner accelerates cold water circulation and rapidly releases cold energy, while the synergistic effect of the vacuum insulation panel and the polyurethane foam layer significantly reduces the rate of heat penetration from the external environment. This allows the cold water tank 1 to maintain temperature fluctuations of less than ±2℃ even in high-frequency water intake scenarios, thus meeting the requirements of rapid cooling response and low-energy-consumption stable operation.

[0025] A positioning mechanism is provided between the cover plate 2 and the cold water tank 1, including at least three circumferentially distributed limiting protrusions 10 located at the edge of the opening of the cold water tank 1; limiting grooves 11 corresponding to the limiting protrusions 10 are formed at the edge of the cover plate 2; and an elastic sealing ring is embedded between the bottom surface of the cover plate 2 and the top surface of the opening of the cold water tank 1. The circumferentially distributed limiting protrusions 10, in conjunction with the grooves and the elastic sealing ring, achieve rapid and accurate positioning of the cover plate 2 and the cold water tank 1. The three-point limiting mechanism eliminates the risk of installation misalignment, and the elastic sealing ring, when compressed, evenly fills the joint, allowing for slight deformation compensation while ensuring sealing, adapting to material expansion and contraction caused by alternating hot and cold temperatures, and is not prone to leakage during long-term use.

[0026] The evaporator pipe 3 and the pure water pipe 4 are fixed to the cover plate 2 via a threaded quick-release connection structure 12. The threaded quick-release connection structure 12 includes a threaded connector at the end of the pipe body with a large-pitch external thread on its outer surface; a corresponding threaded interface on the cover plate 2, the threaded interface having an internal thread that mates with the external thread; and an elastic sealing sleeve fitted at the root of the threaded connector. The large-pitch threaded quick-release structure allows for easy pipe assembly and disassembly with simple rotation. The elastic sealing sleeve at the root of the thread is axially compressed and deformed when tightened, forming a dual barrier of radial and end-face sealing. This design retains the advantage of quick maintenance while effectively resisting internal pressure fluctuations in the cold water tank 1 through the synergistic effect of thread engagement and elastic compression, avoiding the problem of easy loosening in traditional flange bolt connections, and improving the reliability of the pipeline connection.

[0027] In summary, this utility model of a water dispenser with a rapid cooling pipe significantly improves cold energy transfer efficiency by constructing a multi-layered synergistic heat exchange structure through a coaxially arranged three-dimensional spiral evaporator tube 3 and a pure water tube 4. The bottom circulation pump 5 built into the cylindrical cavity of the evaporator tube 3 drives the refrigerant to flow at high speed, closely cooperating with the cuboid frame formed by the pure water tube 4 to create a gradient temperature field within the annular cooling channel 6, achieving directional transfer and uniform diffusion of cold energy. The three-dimensional spiral layout simultaneously extends the interaction path between the pure water and the refrigerant, and combined with the pump-driven forced circulation system, effectively ensures that the temperature in the cold water tank 1 quickly reaches the set threshold and maintains dynamic balance, overcoming the defects of localized overcooling or temperature fluctuations in traditional equipment. The composite spiral architecture of the evaporator tube 3 and the pure water tube 4, by optimizing the flow path and contact area, simultaneously improves the cooling response speed and water temperature control accuracy, meeting the need for immediate access to cold water. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0028] 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 capable of fast cooling, characterized in that, The invention includes a cold water tank (1) and a cover plate (2) covering the opening at the top of the cold water tank (1). The invention is characterized in that: an evaporation tube (3) and a pure water tube (4) are fixedly installed on the cover plate (2) and are arranged coaxially. Both the evaporation tube (3) and the pure water tube (4) extend into the interior of the cold water tank (1). The evaporation tube (3) is arranged in a three-dimensional spiral structure to form a hollow columnar cavity, and the pure water tube (4) is arranged in a three-dimensional spiral structure to form a hollow cuboid frame. A circulation pump (5) is installed in the columnar cavity of the evaporator tube (3), and the circulation pump (5) is fixed to the bottom of the cold water tank (1) by a bracket; an annular cooling channel (6) is formed between the outer wall of the evaporator tube (3) and the inner wall of the pure water pipe (4).

2. The water dispenser capable of rapid cooling according to claim 1, characterized in that: It also includes a cold water pumping device on the cover plate (2), which includes a drive water pump (7) fixed on the cover; a pumping pipe (8), one end of which is connected to the water inlet of the drive water pump (7), and the other end extends to below the liquid surface of the cold water tank (1); the pumping pipe (8) is arranged outside the cooling channel (6), and is located on the radial outside and inside of the evaporation pipe (3) respectively, along with the circulation pump (5).

3. The water dispenser capable of rapid cooling according to claim 2, characterized in that: The bottom of the cold water tank (1) is provided with a temperature sensor (9). The temperature sensor (9) and the water inlet end of the water pump (8) are symmetrically distributed along the central axis of the cold water tank (1) and are located on the inner walls of opposite sides of the cold water tank (1).

4. The water dispenser capable of rapid cooling according to claim 1, characterized in that: The cold water tank (1) includes an inner liner made of 304 stainless steel; and an insulation layer covering the outer surface of the inner liner, wherein the insulation layer is a composite structure of vacuum insulation board and polyurethane foam material.

5. The water dispenser capable of rapid cooling according to claim 1, characterized in that: A positioning mechanism is provided between the cover plate (2) and the cold water tank (1), including at least three limiting protrusions (10) evenly distributed around the periphery and located at the edge of the opening of the cold water tank (1); a limiting groove (11) corresponding to the limiting protrusion (10) is opened at the edge of the cover plate (2); and an elastic sealing ring is embedded between the bottom surface of the cover plate (2) and the top surface of the opening of the cold water tank (1).

6. The water dispenser capable of rapid cooling according to claim 1, characterized in that: The evaporation tube (3) and the pure water tube (4) are fixed to the cover plate (2) by a threaded quick-release connection structure (12). The threaded quick-release connection structure (12) includes a threaded connector at the end of the tube body, with a large-pitch external thread on the outer surface; a threaded interface correspondingly provided on the cover plate (2), the threaded interface having an internal thread that mates with the external thread; and an elastic sealing sleeve fitted at the root of the threaded connector.

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