Water dispenser ice tank

Abstract

The application provides a water dispenser ice tank, which comprises a shell, a thermoelectric module, and the thermoelectric module is arranged on the side wall of the shell; the thermoelectric module comprises a refrigeration block and a semiconductor refrigeration sheet; the refrigeration block is arranged in the inner cavity of the shell, the refrigeration block comprises a base plate and a rib plate, one side of the base plate is attached to the cold end of the semiconductor refrigeration sheet, the other side of the base plate is fixedly connected with the rib plate, and a plurality of rib plates are arranged and vertically fixed on the base plate. The water dispenser ice tank of the application sets the refrigeration block on the side of the water dispenser ice tank, and the refrigeration block has the base plate and the rib plate structure, which is conducive to strengthening the convection heat exchange of water between the rib plates, ensures the refrigeration capacity, and avoids the local icing. A layer of graphene coating is arranged on the surface of the refrigeration block, the absorption rate of radiant heat energy can be improved, the tendency of icing on the surface of the refrigeration block is reduced, and the bacteria in the ice tank can be effectively killed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, more particularly to an ice tank of a water dispenser. BACKGROUND

[0002] At present, household water dispensers mostly adopt the way of semiconductor refrigeration. Semiconductor refrigeration has the characteristics of simple structure, small vibration, low noise, no need for refrigerant and safety and reliability. By using the thermoelectric effect of semiconductor materials, the function of refrigeration and heating is realized through the action of electric current, providing a convenient and efficient water solution for the family.

[0003] At present, household water dispensers generally use semiconductor refrigeration pieces as core components to realize refrigeration function through the temperature difference effect of their cold and hot ends. In order to enhance the heat exchange effect, the hot end and the cold end of the semiconductor refrigeration piece are respectively provided with a heat dissipation block and a refrigeration block. The refrigeration block, as a key component, is generally made of extruded aluminum alloy heat-conducting material. This material has good heat conductivity and corrosion resistance, which can ensure the refrigeration effect and prolong the service life. When the water dispenser is working normally, the refrigeration block is immersed in water, and through the action of convection, conduction and radiation, efficient cooling is realized.

[0004] However, for small cold capacity semiconductor refrigeration pieces, due to their limited refrigeration capacity, the cooling speed of the drinking water in the ice tank is relatively slow, which is difficult to meet the user's demand for fast refrigeration. On the other hand, although the semiconductor refrigeration piece with large refrigeration capacity can significantly improve the cooling speed, the cold end temperature is too low, which is easy to cause the refrigeration block surface to freeze. The formation of ice layer not only affects the convection and conduction effect of water, reduces the heat exchange performance of the refrigeration block, but also may cause the water temperature in the ice tank to gradually rise with the thickening of the ice layer, thereby affecting the refrigeration effect of the water dispenser and the user experience. SUMMARY

[0005] The present application provides an ice tank of a water dispenser to solve the problem of the above-mentioned semiconductor refrigeration piece cold end temperature being too low, which is easy to cause the refrigeration block surface to freeze and reduce the heat exchange performance of the refrigeration block. The ice tank of the water dispenser comprises a shell and a thermoelectric module, wherein the thermoelectric module is arranged on the side wall of the shell.

[0006] The thermoelectric module comprises a refrigeration block and a semiconductor refrigeration piece.

[0007] The refrigeration block is arranged in the inner cavity of the shell, and the cold end of the semiconductor refrigeration piece is attached to the refrigeration block.

[0008] The refrigeration block comprises a base plate and a rib plate, one side of the base plate is attached to the cold end of the semiconductor refrigeration piece, the other side is fixedly connected with the rib plate, and the rib plate is fixedly arranged on the base plate.

[0009] In an implementation, the thickness of the substrate increases from the edge to the center, and the distance between two adjacent ribs increases gradually from the edge to the center.

[0010] In an implementation, the thickness of the ribs is alternately long and short from the edge to the center of the inner cavity of the shell.

[0011] In an implementation, the thermoelectric module further comprises a heat sink and a heat dissipation fan.

[0012] The hot end of the semiconductor refrigeration piece is attached to the heat sink.

[0013] The heat dissipation fan is arranged on the side of the heat sink away from the semiconductor refrigeration piece, and the direction of the air flow of the heat dissipation fan is from the side close to the heat sink to the outside.

[0014] In an implementation, the surface of the refrigeration piece is provided with a graphene-based composite antibacterial coating, which is composed of TiO2 and graphene binary composite material, or TiO2, Ag3PO4 and graphene ternary composite material.

[0015] In an implementation, the shell is further provided with a photocatalytic lamp bead, and the photocatalytic lamp bead is arranged opposite to the thermoelectric module.

[0016] In an implementation, the shell is further provided with a water inlet, a water outlet pipe and a sewage outlet, and the water inlet, the water outlet pipe and the sewage outlet are in communication with the inner cavity of the shell.

[0017] The water inlet and the water outlet pipe are arranged on the same side of the shell, and the sewage outlet is arranged on the side opposite to the water inlet and the water outlet pipe.

[0018] In an implementation, the shell is further provided with a water temperature sensor, and the water temperature sensor is electrically connected to the thermoelectric module.

[0019] The water temperature sensor is used to monitor the water temperature in the inner cavity of the shell to obtain temperature data, and transmit the temperature data to the thermoelectric module.

[0020] The thermoelectric module is configured to receive the temperature data and start refrigeration or pause refrigeration according to the temperature data.

[0021] In an implementation, the thermoelectric module is further configured to stop refrigeration when the temperature data is lower than a preset temperature, and start refrigeration when the temperature data is higher than the preset temperature.

[0022] In an implementation, a thermal insulation layer is further included, which is wrapped outside or inside the shell.

[0023] From the above, the ice tank of the water dispenser comprises a shell, a thermoelectric module, the thermoelectric module is arranged on the side wall of the shell; the thermoelectric module comprises a refrigeration block and a semiconductor refrigeration sheet; the refrigeration block is arranged in the inner cavity of the shell, the refrigeration block comprises a base plate and a rib plate, one side of the base plate is attached to the cold end of the semiconductor refrigeration sheet, the other side is fixedly connected with the rib plate, and the rib plate is arranged in multiple and is fixedly arranged on the base plate vertically. Compared with the prior art, the beneficial effects of the present application are embodied in that the refrigeration block is arranged on the side of the ice tank of the water dispenser, and the base plate and the rib plate structure of the refrigeration block are beneficial to strengthen the convective heat exchange of water between the rib plates. A layer of graphene coating is arranged on the surface of the refrigeration block, which can improve the absorption rate of radiant heat energy, reduce the tendency of ice formation on the surface of the refrigeration block, and effectively kill bacteria in the ice tank. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of embodiments of the application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0025] Figure 1 is a structural schematic diagram of the ice tank of the water dispenser shown in the embodiments of the present application;

[0026] Figure 2 is Figure 1 a bottom view of

[0027] Figure 3 is Figure 1 a left view of

[0028] Figure 4 is a structural schematic diagram of the refrigeration block.

[0029] Explanation of reference signs:

[0030] 10 - shell; 20 - heat insulation layer; 30 - thermoelectric module; 40 - photocatalytic lamp bead; 50 - water temperature sensor; 11 - water inlet; 12 - water outlet pipe; 13 - sewage outlet; 31 - refrigeration block; 32 - semiconductor refrigeration sheet; 33 - heat dissipation block; 34 - heat dissipation fan; 311 - base plate; 312 - rib plate. DETAILED DESCRIPTION

[0031] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example implementations to those skilled in the art. The described features, structures, or characteristics can be combined in one or more implementations. In the following description, numerous specific details are provided to give a thorough understanding of implementations of the claimed application.

[0032] The existing household water dispenser generally uses a semiconductor refrigeration sheet as a core component to achieve refrigeration function through the temperature difference effect of its hot and cold ends. In order to enhance the heat exchange effect, the hot end and the cold end of the semiconductor refrigeration sheet are respectively provided with a heat dissipation block and a refrigeration block. When the water dispenser is working normally, the refrigeration block is immersed in water, and through the effects of convection, conduction and radiation, efficient cooling is achieved. However, for a small cooling capacity semiconductor refrigeration sheet, due to its limited refrigeration capacity, the cooling speed of the drinking water in the ice tank is relatively slow, which is difficult to meet the user's demand for fast refrigeration. On the other hand, although a large refrigeration capacity semiconductor refrigeration sheet can significantly improve the cooling speed, its cold end temperature is too low, which is easy to cause the refrigeration block surface to freeze. The formation of ice layer not only affects the convection and conduction effect of water, reduces the heat exchange performance of the refrigeration block, but also may cause the water temperature in the ice tank to gradually rise as the ice layer thickens, thereby affecting the refrigeration effect of the water dispenser and the user experience.

[0033] To solve the above problems, the present application provides a water dispenser ice tank, referring to Figures 1 to 4 As shown in the figure, it comprises a shell 10, a thermoelectric module 30, and the thermoelectric module 30 is arranged on the side wall of the shell 10. The shell 10 forms a closed space, so that the refrigeration process can be carried out in a relatively stable environment. The material of the shell 10 is usually selected to have corrosion resistance to ensure the refrigeration efficiency and service life.

[0034] The thermoelectric module 30 comprises a refrigeration block 31 and a semiconductor refrigeration sheet 32; the refrigeration block 31 is arranged in the inner cavity of the shell 10, and the cold end of the semiconductor refrigeration sheet 32 is attached to the refrigeration block 31.

[0035] The thermoelectric module 30 is the core component of the water dispenser ice tank, which uses the thermoelectric effect of the semiconductor refrigeration sheet 32 to achieve refrigeration function. The thermoelectric module 30 is designed and installed on the side wall of the shell 10, which can effectively utilize the space and maximize the refrigeration effect.

[0036] The refrigeration block 31 is the part of the thermoelectric module 30 that directly contacts the water and is used to transfer the cold generated by the semiconductor refrigeration sheet 32 to the water. The semiconductor refrigeration sheet 32 acts as the cold source of the refrigeration block 31, and the semiconductor refrigeration sheet 32 achieves the refrigeration function through the temperature difference effect between its cold end and hot end. The cold end is attached to the refrigeration block 31 to transfer the cold to the refrigeration block 31.

[0037] The refrigeration block 31 includes a base plate 311 and a plurality of rib plates 312. One side of the base plate 311 is attached to the cold end of the semiconductor refrigeration sheet 32, and the other side is fixedly connected to the rib plates 312. The plurality of rib plates 312 are evenly distributed between them, and the rib plates 312 are fixed vertically on the base plate 311.

[0038] The refrigeration block 31 is composed of the base plate 311 and the rib plates 312. The base plate 311 serves as the receiving surface of the cold and is tightly attached to the cold end of the semiconductor refrigeration sheet 32 to ensure efficient transfer of the cold. The rib plates 312 serve to enhance the heat exchange effect. The rib plates 312 are evenly spaced and fixed vertically on the base plate 311, forming a plurality of heat exchange channels. These channels increase the contact area between the water and the refrigeration block 31, thereby improving the heat exchange efficiency.

[0039] By optimizing the structural design of the refrigeration block 31, especially by increasing the number and rational distribution of the rib plates 312, the heat exchange area and efficiency of the refrigeration block 31 are significantly improved. In this way, even if a small cold semiconductor refrigeration sheet 32 is used, the cooling speed of the drinking water can be accelerated through enhanced heat exchange effect to meet the user's demand for fast cooling.

[0040] The ice tank of the water dispenser provided by the embodiments of the present application not only accelerates the cooling speed of the drinking water, but also maintains the stability and durability of the refrigeration effect by reducing the possibility of ice layer formation. This not only improves the refrigeration efficiency, but also enhances the user's drinking experience. By improving the heat exchange efficiency and reducing unnecessary energy loss, it has significant energy-saving and environmental protection effects.

[0041] In some embodiments of the present application, the thickness of the base plate 311 increases from the edge to the center.

[0042] Specifically, when the cold end of the semiconductor refrigeration sheet 32 generates cold, the center temperature is lower. These colds are first transferred to the base plate 311. Due to the gradual thickening of the base plate 311 from the edge to the center, this design enhances the heat exchange effect in the center area, thereby improving the refrigeration efficiency. The increase in the thickness of the center of the base plate 311 not only facilitates heat transfer, but also significantly enhances the overall structural strength of the refrigeration block 31. During the refrigeration process, the refrigeration block 31 may be subjected to certain stress due to physical phenomena such as thermal expansion and contraction. The center-thickened base plate 311 can better resist these stresses and prolong the service life of the refrigeration block 31.

[0043] In the conventional design, the refrigeration block often has the problem of uneven refrigeration speed, that is, the area close to the cold end of the semiconductor refrigeration sheet has a faster refrigeration speed, and the area far from the cold end is relatively slow. Through the design of the gradually changing thickness of the substrate 311, the cold quantity is more uniformly distributed in the transmission process, thereby solving the problem of uneven refrigeration speed. Due to the increase in the thickness of the center of the substrate 311, the cold quantity is better accumulated and strengthened in the transmission process, thereby improving the refrigeration efficiency and refrigeration speed. This is especially true for small cold quantity semiconductor refrigeration sheets, which can significantly speed up the cooling speed of drinking water.

[0044] In some embodiments of the present application, the thickness of the rib plate 312 is gradually increased from the edge to the center of the inner cavity of the shell 10.

[0045] In the embodiments of the present application, the thickness of the rib plate 312 changes according to a certain rule. Specifically, the thickness of the rib plate 312 gradually changes from the edge to the center of the inner cavity of the shell 10, that is, some rib plates are relatively long, and the adjacent rib plates are relatively short. This size design increases the surface area of the rib plate 312 and optimizes the fluid dynamics characteristics inside the refrigeration block 31.

[0046] Specifically, when the water flows inside the refrigeration block 31, the long-short alternating rib plate 312 can guide the water flow to form more complex flow patterns, such as vortex, mixing, etc. These flow patterns help to increase the contact area and contact time of water and rib plate 312, thereby improving the heat exchange efficiency. At the same time, the vortex and mixing effect can also promote the heat transfer inside the water, so that the water temperature is more uniform. Due to the change in the thickness of the rib plate 312, the heat exchange area inside the refrigeration block 31 is significantly increased. This not only improves the heat exchange rate between the refrigeration block 31 and the water, but also significantly improves the refrigeration efficiency. Under the same refrigeration capacity, this design can quickly reduce the water temperature to meet the user's demand for fast refrigeration.

[0047] Moreover, due to the lower temperature in the center of the refrigeration block 31, the small spacing between the edges of the rib plate 312 and the large heat exchange area, and the large spacing between the centers, which is conducive to convective heat transfer, reduces the risk of local supercooling. At the same time, the design of the rib plate 312 also helps to promote the convection and mixing of water, reducing the possibility of ice formation. Even in the case of large refrigeration capacity, the problem of ice formation on the surface of the refrigeration block 31 can be effectively avoided.

[0048] It can be understood that in the traditional design, the rib plate often has a fixed thickness and length, which limits the increase of heat exchange area and the improvement of heat exchange efficiency. Through the design of the rib plate 312 with long and short thicknesses, the heat exchange area is increased, and the fluid dynamics characteristics are optimized, thereby solving the problem of low heat exchange efficiency. The long and short rib plate 312 design can also optimize the water flow path and reduce the risk of water flow blockage inside the refrigeration block 31. This helps to keep the water flow unobstructed, improving the reliability and durability of the refrigeration block 31.

[0049] In some embodiments of the present application, the thermoelectric module further comprises a heat dissipation block 33 and a heat dissipation fan 34; the hot end of the semiconductor refrigeration sheet 32 is attached to the heat dissipation block 33; the heat dissipation fan 34 is arranged on the side of the heat dissipation block 33 away from the semiconductor refrigeration sheet 32, and the air direction of the heat dissipation fan 34 is from the side close to the heat dissipation block 33 to the outside.

[0050] The heat dissipation block 33 is usually made of high thermal conductivity materials such as aluminum alloy or copper alloy to ensure that heat can be quickly and effectively transferred from the hot end of the semiconductor refrigeration sheet 32 to the heat dissipation block 33. The surface area of the heat dissipation block 33 is usually designed to be large to increase the contact area with air, thereby improving the heat dissipation efficiency. The air direction of the heat dissipation fan 34 is set to blow from the side close to the heat dissipation block 33 to the outside, i.e. forced convection cooling. The heat dissipation fan 34 accelerates air flow to quickly remove heat from the heat dissipation block 33, further improving the heat dissipation efficiency. This design not only ensures the stability of the thermoelectric module 30 under high load operation, but also prolongs the service life of the semiconductor refrigeration sheet 32.

[0051] Through the synergistic effect of the heat dissipation block 33 and the heat dissipation fan 34, the heat dissipation effect of the thermoelectric module 30 is significantly improved. The heat generated by the hot end of the semiconductor refrigeration sheet 32 is quickly transferred to the heat dissipation block 33 and removed through the forced convection cooling effect of the heat dissipation fan 34. This not only reduces the working temperature of the semiconductor refrigeration sheet 32, but also improves its refrigeration efficiency, so that the ice tank of the water dispenser can still maintain stable refrigeration performance under long-time operation.

[0052] In the existing water dispenser ice tank, the hot end of the semiconductor cooling sheet 32 often relies on natural heat dissipation or simple heat dissipation fins for heat dissipation. This heat dissipation method may be sufficient under low heat load, but under high load or long time operation, insufficient heat dissipation will cause the temperature of the semiconductor cooling sheet 32 to rise, thereby affecting its refrigeration efficiency and stability. By introducing the heat dissipation block 33 and the heat dissipation fan 34, the embodiments of the present application effectively solve this problem, ensuring the stability and refrigeration efficiency of the thermoelectric module 30 under high load operation. The addition of the heat dissipation block 33 and the heat dissipation fan 34 in the embodiments of the present application not only improves the heat dissipation efficiency of the thermoelectric module 30, but also indirectly improves the refrigeration efficiency and stability. Since the working temperature of the semiconductor cooling sheet 32 is reduced, its refrigeration efficiency is improved, thereby speeding up the cooling speed of the drinking water. At the same time, stable heat dissipation effect also ensures the reliability of the thermoelectric module 30 under long time operation.

[0053] In some embodiments of the present application, a graphene-based composite antibacterial coating is provided on the surface of the refrigeration block 31. The coating is composed of a TiO2 and graphene binary composite material, or a TiO2, Ag3PO4 and graphene ternary composite material.

[0054] TiO2 is a widely recognized antibacterial material, and its photocatalytic activity can decompose organic matter and kill bacteria. Under ultraviolet light irradiation, TiO2 can generate free radicals with strong oxidizing properties, which can destroy the cell wall and DNA of bacteria, thereby achieving antibacterial effect. Ag3PO4 is a material with high antibacterial performance, and its antibacterial mechanism is mainly realized by releasing silver ions. Silver ions can interfere with the metabolic process of bacteria, inhibit their growth and reproduction. When TiO2 is used in combination with Ag3PO4, the two can produce synergistic antibacterial effect, significantly improving the antibacterial performance of the coating.

[0055] In the water dispenser ice tank, the surface of the refrigeration block 31 is prone to become a breeding ground for bacteria and microorganisms. In the embodiments of the present application, by coating a graphene-based composite antibacterial coating, the growth of these bacteria and microorganisms can be effectively killed and inhibited, thereby solving the problem of bacterial breeding and improving the hygiene safety of drinking water. By combining TiO2 (or TiO2 and Ag3PO4) with graphene, a graphene-based composite antibacterial coating with excellent antibacterial performance and good thermal conductivity and mechanical properties is formed. This coating not only can effectively kill and inhibit the growth of bacteria, but also can quickly respond to the temperature change of the refrigeration block 31, maintaining the stability of the refrigeration efficiency.

[0056] Meanwhile, the excellent thermal conductivity of graphene enables the coating to respond quickly to temperature changes of the cooling block 31, maintaining the stability of the refrigeration efficiency. This helps to ensure that the water dispenser ice tank can still maintain stable refrigeration performance under long-term operation, improving the user's drinking experience. The addition of graphene also enhances the mechanical strength and wear resistance of the coating, enabling it to resist wear and tear during daily use and prolong its service life. The antibacterial properties of TiO2 and Ag3PO4 enable the coating to have a wide antibacterial spectrum and high antibacterial effect. This helps to ensure that the water dispenser ice tank can still maintain excellent antibacterial performance under different water quality and use environments.

[0057] In some embodiments of the present application, the shell 10 is also provided with a photocatalytic lamp bead 40, which is arranged opposite to the thermoelectric module 30.

[0058] The photocatalytic lamp bead 40 and the thermoelectric module 30 form a relative arrangement, ensuring that the light emitted by the photocatalytic lamp bead 40 can directly irradiate the surface of the cooling block 31 of the thermoelectric module 30, especially those areas coated with graphene-based composite antibacterial coating. The light emitted by the photocatalytic lamp bead 40 can activate TiO2 in the graphene-based composite antibacterial coating, thereby triggering a series of photocatalytic reactions. These reactions can decompose organic matter, kill bacteria, and produce free radicals with cleaning and purifying effects.

[0059] The relative arrangement of the photocatalytic lamp bead 40 and the thermoelectric module 30 not only realizes the play of photocatalysis, but also forms a synergistic effect. On the one hand, photocatalysis can enhance the antibacterial performance of the graphene-based composite antibacterial coating, further improving the hygiene and safety of the surface of the cooling block 31.

[0060] In some embodiments of the present application, the shell 10 is also provided with a water inlet 11, a water outlet pipe 12 and a sewage outlet 13, which are all in communication with the inner cavity of the shell 10; the water inlet 11 and the water outlet pipe 12 are arranged on the same side of the shell 10, and the sewage outlet 13 is arranged on the side opposite to the water inlet 11 and the water outlet pipe 12.

[0061] Specifically, the water inlet 11, the water outlet pipe 12 and the sewage outlet 13, as channels for exchanging fluid with the external environment, are all arranged on the shell 10 and in communication with the inner cavity of the shell 10, ensuring that water can smoothly enter, flow out and be discharged from the shell 10, meeting the normal operation requirements of the water dispenser ice tank.

[0062] The water inlet 11 and the water outlet pipe 12 are arranged on the same side of the shell 10, which not only reduces the complexity in the installation process, but also enables the user to conveniently connect and operate. The sewage outlet 13 is ingeniously arranged on the side opposite to the water inlet 11 and the water outlet pipe 12, which helps to form an effective fluid channel during the sewage discharge process, ensuring that the sewage can smoothly flow out of the shell 10 and avoiding accumulation and pollution inside. At the same time, the relative position of the sewage outlet 13 also helps to reduce the residence time of the fluid inside the shell 10, reducing the risk of pollution.

[0063] In some embodiments of the present application, a water temperature sensor 50 is further arranged on the shell 10, and the water temperature sensor is electrically connected with the thermoelectric module 30; the water temperature sensor 50 is used to monitor the water temperature in the cavity of the shell 10 to obtain temperature data, and transmit the temperature data to the thermoelectric module 30; the thermoelectric module 30 is configured to receive the temperature data and start or pause the refrigeration according to the temperature data.

[0064] The thermoelectric module 30 is further configured to stop the refrigeration when the temperature data is lower than a preset temperature, and start the refrigeration when the temperature data is higher than the preset temperature.

[0065] Specifically, when the temperature data fed back by the water temperature sensor 50 is lower than the preset comfortable or safe water temperature threshold of the system, the thermoelectric module 30 determines that the current water temperature meets the use requirement, and therefore stops the refrigeration operation, avoiding unnecessary energy consumption while maintaining the stability of the water temperature. Secondly, when the temperature data is higher than the preset temperature, the thermoelectric module 30 can quickly identify the risk or discomfort caused by the high water temperature, and immediately start the refrigeration function to adjust the water temperature to the preset level, ensuring the comfort and safety of the environment inside the shell 10.

[0066] Through the cooperative work of the water temperature sensor 50 and the thermoelectric module 30, the embodiments of the present application realize intelligent monitoring and management of the water temperature, which can be automatically adjusted without manual intervention, improving the automation level and convenience.

[0067] In some embodiments of the present application, a thermal insulation layer 20 is further included, which is wrapped outside or inside the shell 10. It can effectively block the heat exchange between the inside and outside of the shell 10, whether it is to prevent external heat from invading the inside or to prevent internal cold from flowing out to the outside, which plays a crucial role. This thermal insulation effect ensures the stability of the internal environment of the shell 10, especially when the thermoelectric module 30 is running in the refrigeration or heating mode, which can significantly improve the energy efficiency.

[0068] The material of the thermal insulation layer 20 needs to have high thermal resistance, low thermal conductivity, good mechanical strength and weather resistance, etc. Common thermal insulation materials include foamed plastic, aerogel, glass fiber, etc., which are not specifically limited in the present application.

[0069] The heat insulation layer 20 can be wrapped on the outside or the inside of the shell 10, specifically, the outside wrapping mode can directly reduce the influence of the external environment on the internal temperature of the shell 10, and is suitable for systems that need to be operated stably for a long time and are sensitive to external environmental changes. The inside wrapping mode pays more attention to protecting the internal components of the shell 10 from temperature changes, and can provide better protection in extreme conditions.

[0070] The ice tank of the water dispenser provided by the application comprises a shell and a thermoelectric module, the thermoelectric module is arranged on the side wall of the shell; the thermoelectric module comprises a refrigeration block and a semiconductor refrigeration sheet; the refrigeration block is arranged in the inner cavity of the shell, the refrigeration block comprises a base plate and a plurality of rib plates, one side of the base plate is attached to the cold end of the semiconductor refrigeration sheet, the other side is fixedly connected with the rib plates, the plurality of rib plates are arranged at equal intervals between each other, and the rib plates are fixedly arranged on the base plate perpendicularly. Compared with the prior art, the application has the beneficial effects that the refrigeration block is arranged on the side of the ice tank of the water dispenser, the base plate of the refrigeration block is thick in the center and thin on both sides, and the rib plates are long and short alternately in the thickness direction, which is beneficial to strengthen the convective heat exchange of water between the rib plates. The coating material graphene used can improve the absorption rate of radiant heat energy and reduce the tendency of icing on the surface of the refrigeration block, in addition, the graphene composite antibacterial coating can effectively kill bacteria in the ice tank, especially under the action of photocatalysis, TiO2 or Ag3PO4 and other graphene-based multi-component composite materials have strong inhibition and killing effect on bacteria in the ice tank of the water dispenser.

[0071] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A water dispenser ice bin, characterized in that, The application relates to a heat pump device, which comprises a shell (10), a thermoelectric module (30) arranged on a side wall of the shell (10), a refrigeration block (31), and a semiconductor refrigerating sheet (32). The thermoelectric module (30) comprises the refrigeration block (31) and the semiconductor refrigerating sheet (32). The refrigeration block (31) is arranged in a cavity of the shell (10), and a cold end of the semiconductor refrigerating sheet (32) is attached to the refrigeration block (31). The refrigeration block (31) comprises a base plate (311) and a plurality of rib plates (312), one side of the base plate (311) is attached to the cold end of the semiconductor refrigerating sheet (32), the other side of the base plate (311) is fixedly connected with the rib plates (312), the rib plates (312) are arranged on the base plate (311) perpendicularly. The thickness of the base plate (311) gradually increases from the edge to the center. The thickness of the rib plates (312) gradually increases from the edge to the center of the cavity of the shell (10), and the distance between two adjacent rib plates (312) gradually increases from the edge to the center.

2. The ice bin of claim 1, wherein, The thermoelectric module further comprises a heat dissipation block (33) and a heat dissipation fan (34). A hot end of the semiconductor refrigerating sheet (32) is attached to the heat dissipation block (33). The heat dissipation fan (34) is arranged on a side of the heat dissipation block (33) away from the semiconductor refrigerating sheet (32), and the heat dissipation fan (34) blows air from the side of the heat dissipation block (33) to the outside.

3. The ice bin of claim 1, wherein, The surface of the refrigeration block (31) is provided with a graphene-based composite antibacterial coating, which is composed of TiO2 and graphene binary composite material or TiO2, Ag3PO4 and graphene ternary composite material.

4. The ice bin of claim 3, wherein, The shell (10) is further provided with a photocatalytic lamp bead (40) arranged opposite to the thermoelectric module (30).

5. The ice bin of claim 1, wherein, The shell (10) is further provided with a water inlet (11), a water outlet pipe (12) and a sewage outlet (13), which are all in communication with the cavity of the shell (10). The water inlet (11) and the water outlet pipe (12) are arranged on the same side of the shell (10), and the sewage outlet (13) is arranged on the side opposite to the water inlet (11) and the water outlet pipe (12).

6. The ice bin of claim 1, wherein, The shell (10) is further provided with a water temperature sensor (50) electrically connected with the thermoelectric module (30). The water temperature sensor (50) is used for monitoring the water temperature in the cavity of the shell (10) to obtain temperature data and transmitting the temperature data to the thermoelectric module (30). The thermoelectric module (30) is configured to receive the temperature data and start refrigeration or pause refrigeration according to the temperature data.

7. A water cooler ice bin as claimed in claim 6, wherein, The thermoelectric module (30) is further configured to stop refrigeration when the temperature data is lower than a preset temperature and start refrigeration when the temperature data is higher than the preset temperature.

8. The ice bin of claim 1, wherein, The application further comprises a heat insulation layer (20) wrapped outside or inside the shell (10).

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