Novel cooling water cup based on radiation refrigeration film

Abstract

The utility model relates to the technical field of cooling and refrigeration, and particularly discloses a novel cooling water cup based on a radiation refrigeration film, which comprises a cup body with an upward opening and a cup cover for covering the opening of the cup body, wherein a first radiation refrigeration film is attached to the cup body, and / or a second radiation refrigeration film is attached to the cup cover. According to the novel cooling water cup based on the radiation refrigeration film, liquid in the cup can be cooled without using electric energy, and the novel cooling water cup has the advantages of being environmentally friendly and saving energy.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling and refrigeration, in particular to a novel cooling water cup based on a radiation cooling film. Background Art

[0002] Common water cups are mainly divided into ordinary water cups without insulation function and thermos cups with insulation function.

[0003] Ordinary water cups are primarily used to hold liquids, while thermos cups also have a heat preservation function (delaying the temperature drop or rise of the liquid inside the cup). However, neither ordinary water cups nor thermos cups can actually cool the liquid inside. To meet this need, some water cups are equipped with electronic cooling devices that use electricity to cool the liquid inside the cup. However, this consumes electricity and is not environmentally friendly.

[0004] In recent years, the concept and properties of radiative cooling using nanostructures and metamaterials have been extensively researched and experimentally demonstrated. The key to this technology lies in minimizing the system's absorption of thermal radiation while ensuring effective thermal insulation. Furthermore, nanostructures and metamaterials are used to increase the system's external heat radiation, ultimately maintaining a constant cooling state and achieving temperature reduction. Radiative cooling membranes, derived from this technology, represent a recent breakthrough in the field, offering advantages such as flexibility, long lifespan, and passive cooling capabilities.

[0005] However, the radiant cooling film has not yet been used in water cup products. Therefore, it is necessary to improve the existing water cup to solve the problem that it must use electrical energy to cool the liquid in the cup.

[0006] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Utility Model Content

[0007] One purpose of the utility model is to provide a novel cooling water cup based on a radiation refrigeration film, which can cool the liquid in the cup without using electric energy, and has the advantages of environmental protection and energy saving.

[0008] To achieve the above objectives, the present invention provides a novel cooling water cup based on a radiation refrigeration film, comprising a cup body with an upward opening and a cup cover for covering the opening of the cup body;

[0009] Wherein, a first radiant cooling film is attached to the cup body, and / or a second radiant cooling film is attached to the cup lid.

[0010] Optionally, the first radiant cooling film is attached to the outer side of the inner container.

[0011] Optionally, the shell is a transparent structure.

[0012] Optionally, the shell is made of a transparent composite material.

[0013] Optionally, the inner container is made of a heat-conductive metal.

[0014] Optionally, the base is made of a heat-insulating material.

[0015] Optionally, a hollow space is provided between the inner container and the shell.

[0016] Optionally, the second radiation refrigeration film is attached to the top of the cup cover.

[0017] The novel cooling water cup based on the radiation refrigeration film has the advantages that the first radiation refrigeration film and / or the second radiation refrigeration film can continuously radiate the heat of the liquid in the cup outward by the radiation refrigeration technology, so that the passive cooling effect without power consumption is achieved, and therefore, the novel cooling water cup based on the radiation refrigeration film can cool the liquid in the cup without using electric energy, and has the advantages of environmental protection and energy saving. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0019] Figure 1 FIG. 1 is a schematic view of a novel cooling water cup provided with only a first radiation refrigeration film;

[0020] Figure 2 FIG. 2 is a schematic view of a novel cooling water cup provided with only a second radiation refrigeration film;

[0021] Figure 3 FIG. 3 is a schematic view of a novel cooling water cup provided with both a first radiation refrigeration film and a second radiation refrigeration film;

[0022] Figure 4 FIG. 4 is a schematic view of the novel cooling water cup in a circular truncated cone shape;

[0023] Figure 5 FIG. 5 is a temperature curve of the inside and outside of a test container in a thermal insulation cup prototype machine design experiment;

[0024] Figure 6 FIG. 6 is a humidity curve of the inside and outside of a test container in a thermal insulation cup prototype machine design experiment;

[0025] Figure 7 For the morning period side edge coated new cooling water cup experimental test container inside and outside temperature curve;

[0026] Figure 8 For the morning period side edge coated new cooling water cup experimental test container inside and outside humidity curve;

[0027] Figure 9 For the afternoon period side edge coated new cooling water cup experimental test container inside and outside temperature curve;

[0028] Figure 10 For the afternoon period side edge coated new cooling water cup experimental test container inside and outside humidity curve;

[0029] Figure 11 For the top new cooling water cup experimental test container inside and outside temperature curve;

[0030] Figure 12 For the top new cooling water cup experimental test container inside and outside humidity curve.

[0031] In the figure:

[0032] 1, cup body;101, shell;102, base;103, inner container;104, hollow space;

[0033] 2, cup cover;

[0034] 3, the first radiation refrigeration film;

[0035] 4, the second radiation refrigeration film. DETAILED DESCRIPTION

[0036] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the following described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0037] In the description of the present application, it should be understood that when one component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween. When one component is considered to be "disposed on" another component, it can be directly disposed on the other component or there can be a component disposed therebetween.

[0038] In addition, the terms "long", "short", "inside", "outside", etc. that indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention. They do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientation structure, and should not be understood as a limitation of the present invention.

[0039] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0040] Example 1

[0041] The utility model provides a novel cooling water cup based on a radiation refrigeration film, which is suitable for application scenarios of cooling liquid in the cup. It can cool the liquid in the cup without using electric energy, and has the advantages of environmental protection and energy saving.

[0042] In the present invention, a novel cooling water cup based on a radiative cooling film includes a cup body 1 with an upward opening and a cup lid 2 for sealing the opening of the cup body 1. Optionally, the cup lid 2 can seal the opening of the cup body 1 by means of a screw cap seal, a crimp seal, a knurled seal, or a silicone seal ring, but this invention is not limited thereto.

[0043] In this embodiment, the new cooling cup based on the radiative cooling film has three forms:

[0044] ① Such as Figure 1 As shown, the new cooling water cup based on the radiant cooling film has only one radiant cooling film, which is attached to the cup body 1. For the convenience of description, the radiant cooling film attached to the cup body 1 is referred to as the first radiant cooling film 3;

[0045] ② If Figure 2 As shown, the new cooling water cup based on the radiant cooling film has only one radiant cooling film, which is attached to the cup cover 2. For the convenience of description, the radiant cooling film attached to the cup cover 2 is referred to as the second radiant cooling film 4.

[0046] ② If Figure 3 As shown, the new cooling water cup based on the radiation cooling film has two radiation cooling films, which are respectively recorded as the first radiation cooling film 3 and the second radiation cooling film 4, wherein the first radiation cooling film 3 is attached to the cup body 1, and the second radiation cooling film 4 is attached to the cup lid 2.

[0047] Furthermore, the first radiant cooling film 3 and / or the second radiant cooling film 4 may be a flexible structure or a rigid structure, which is not limited in the present invention.

[0048] It should be noted that radiative cooling specifically refers to a method whereby a hot object radiates energy to the outside world, thereby lowering its temperature. A radiative cooling film, on the other hand, utilizes nanostructures or metamaterials to achieve radiative cooling without power consumption. Simply put, once a radiative cooling film is attached to an object, it gradually radiates the object's heat away, ultimately achieving a power-free cooling effect. The specific cooling principles and structures of radiative cooling films are known from the prior art and are not the focus of this utility model, so they will not be elaborated on here.

[0049] In the present invention, the cup body 1 is an overall thermos cup structure, specifically comprising an outer shell 101, a base 102, and an inner liner 103. The outer shell 101 surrounds a receiving space with openings at both ends; the base 102 is located at the bottom of the outer shell 101, covering the lower opening of the receiving space; the inner liner 103 is located within the receiving space, with a hollow space 104 defined between the inner liner 103 and the outer shell 101.

[0050] Furthermore, when the cup body 1 is covered with the first radiant cooling film 3 , the first radiant cooling film 3 is attached to the outer side of the inner liner 103 , and the outer shell 101 is a transparent structure, so that the first radiant cooling film 3 radiates heat outward.

[0051] Optionally, the housing 101 is made of a transparent composite material such as acrylic, glass, PETG, PC board, etc., so as to obtain a transparent structure, which is conducive to the first radiative cooling film 3 reflecting sunlight and radiating heat outward;

[0052] The inner liner 103 is made of a heat-conducting metal with good thermal conductivity, such as copper, aluminum or stainless steel, so that the inner liner 103 transfers the heat of the liquid in the cup to the first radiant cooling film 3;

[0053] The base 102 is made of heat-insulating materials such as silicone or rubber to prevent external heat from entering the liquid in the cup through the base 102 as much as possible.

[0054] In this embodiment, the outer contour of the horizontal cross section of the novel cooling water cup based on the radiation cooling film can be Figures 1-3 The circle shown or Figure 4 The frustum shown can, of course, also be a triangle, rectangle, pentagon or hexagon, etc., which is not limited in the present invention. Optionally, the volume of the new cooling water cup can be 0.1 ml to 10 L, etc., which is not limited in the present invention.

[0055] Specifically, the inner container 103 transfers the heat of the liquid in the cup to the first radiative refrigeration film 3, and then the first radiative refrigeration film radiates the heat in the inner container 103 to the outside in the form of infrared electromagnetic waves through the shell 101 by the radiative refrigeration technology, thereby achieving the cooling of the liquid in the cup, and the process does not need to use any electrical components, so that the passive cooling of the liquid in the cup can be completed without using electric energy, and energy saving and environmental protection are achieved.

[0056] Further, researches show that when the selected radiative refrigeration film can reflect more than 95% of sunlight and ensure that the transmittance is close to 0, the passive cooling effect is particularly obvious.

[0057] When the second radiative refrigeration film 4 is arranged at the cup cover 2, the second radiative refrigeration film 4 is attached to the top of the cup cover 2. Specifically, the cup cover 2 transfers the heat of the liquid in the cup to the second radiative refrigeration film 4, and then the second radiative refrigeration film radiates the heat in the inner container 103 to the outside in the form of infrared electromagnetic waves by the radiative refrigeration technology, thereby achieving the cooling of the liquid in the cup, and the process does not need to use any electrical components, so that the passive cooling of the liquid in the cup can be completed without using electric energy, and energy saving and environmental protection are achieved.

[0058] It can be understood that the total refrigeration power can be controlled by controlling the use area of the radiative refrigeration film, and the overall cooling speed can be controlled by controlling the volume of the inner container 103. The novel cooling cup based on the radiative refrigeration film can be used for cooling the liquid in the cup in indoor or outdoor environments.

[0059] Further, the functional devices can be selectively added in the novel cooling cup based on the radiative refrigeration film, for example, the functional devices can include temperature detectors (which can be thermocouples, liquid thermometers, solid thermometers), temperature indicators (including electronic (cooperating with thermocouples) or non-electronic displays (such as liquid or solid thermometers) and the like.

[0060] In summary, the novel cooling cup based on the radiative refrigeration film can continuously radiate the heat of the liquid in the cup to the outside by the radiative refrigeration technology, thereby achieving the passive cooling effect without power consumption, so that the novel cooling cup based on the radiative refrigeration film can cool the liquid in the cup without using electric energy, and has the advantages of environmental protection and energy saving.

[0061] Embodiment 2

[0062] This embodiment calculates and explains the radiative refrigeration power of the novel cooling cup based on the radiative refrigeration film in embodiment 1.

[0063] The new cooling cup based on the radiation cooling film reduces the temperature of the liquid in the cup by radiating heat outward. The total cooling power E of the new cooling cup is controlled by the surface area S of the radiation cooling film, and the specific calculation formula is: E=P×S, where P is the radiation power density of the unit surface of the radiation cooling film (determined by the properties of the radiation cooling film itself and weather conditions, and the unit is generally W / m 2 ).

[0064] In order to design a more efficient new cooling cup, it is necessary to understand the process of heat preservation and cooling. In this process, under the condition that the heat insulation performance of the new cooling cup is relatively good, the internal and external temperature difference ΔT of the new cooling cup is one of the most important parameters for evaluating the cooling effect of the radiation cooling film, and the specific calculation formula is:

[0065]

[0066] where T out is the temperature of the external air, T in is the final temperature of the object in the cup, Q1 is the heat absorbed by light absorption and heat conduction absorption, Q2 is the heat conduction radiation, Q3 is the heat radiated outward by the radiation cooling film (positive for heating and negative for cooling), c is the specific heat capacity of the object in the cup, for example, water (c=4200kJ / (kg·K) (standard air state)), and m is the mass of the object in the cup.

[0067] As can be seen from equation (1), when the heat radiated outward by the radiation cooling film is greater than the heat absorbed by the liquid in the cup, the temperature of the liquid in the cup can be reduced. Therefore, there are several means to improve the cooling performance of the new cooling cup:

[0068] 1) Reduce heat exchange as much as possible;

[0069] 2) Reduce heat absorption (including reducing light absorption and external heat conduction absorption);

[0070] 3) Increase the radiation heat (the efficiency of the film is higher under low humidity and sunny conditions).

[0071] A key function of the new cooling cup is the function of non-electric cooling, which realizes the function of cooling by radiating outward through the radiation cooling film without consuming other energy. Since the power of the radiation cooling film is fixed, to improve the cooling effect, it is necessary to use a good conduction medium. In this case, under the premise of ensuring heat insulation, the efficiency of radiation should be increased as much as possible.

[0072] Based on the above principles, this embodiment uses a radiative cooling film (optionally a flexible radiative cooling film with a polymer metasurface structure) as the basis to design radiative cooling films with different coverage ratios to achieve different degrees of thermal insulation and cooling effects. The power of the radiative cooling film is known to be 100W / ㎡. From the above formula (E=P×S), it can be seen that the total cooling power E of the radiative cooling film is proportional to the area S of the radiative cooling film. Within a certain range, the larger the area, the greater the total cooling power, and a more stable thermal insulation and cooling effect is achieved.

[0073] Example 3

[0074] The following describes the beneficial effects of the novel cooling water cup based on the radiant refrigeration film provided by the present invention in combination with specific experimental data:

[0075] Figure 1 The new cooling cup shown has a radiant cooling film attached only to the cup body, a side-wrapped structure with a coverage rate of 86%, resulting in a high radiant cooling power.

[0076] Figure 2 The new cooling cup shown has a radiant cooling film attached only to the lid, forming a top-covering structure with a coverage rate of 7%. The radiant cooling power is slightly lower.

[0077] Figure 3 The new cooling water cup shown has a radiation cooling film attached to the cup body and the cup lid, which is a fully covered structure with a coverage rate of 93% and the maximum radiation cooling power.

[0078] Taking the size of an ordinary water cup as an example, the diameter is 7cm, the height is 22cm, and the bottom area is about 38.465cm 2 , if using radiant cooling film:

[0079] for Figure 1 The side cladding structure shown requires approximately 483.56 cm 2 The total cooling power E is: 100W / m 2 ×483.56cm 2 =4.8356W;

[0080] for Figure 2 The top cladding structure shown requires approximately 38.465 cm 2 The total cooling power E is: 100W / m 2 ×38.465cm 2 =0.38465W;

[0081] for Figure 3 The fully enclosed structure shown requires approximately 522.025cm 2 The total cooling power E is: 100W / m2 ×522.025cm 2 =5.22025W.

[0082] Compared to ordinary thermoses that can only reduce heat absorption or loss, the prototype can work 24 hours a day, which is equivalent to all-weather cooling, and achieves zero energy consumption passive radiation cooling, with zero pollution to the environment.

[0083] Whether indoors or outdoors, when users need to drink water and beverages at a lower temperature, the new cooling water cup in the present invention can be used. Furthermore, the effect is better in outdoor scenes.

[0084] Example 3

[0085] In order to verify the cooling capability of the radiative cooling film, this embodiment produced the following prototype to simulate a new cooling cup based on the radiative cooling film, and recorded several application examples:

[0086] ① A 350ml aluminum can was built to simulate the inner tank. The bottom and top of the aluminum can were wrapped with 14μm thick aluminum foil to make the system have better thermal insulation effect. A 10cm×35cm radiant cooling film was attached to the outer wall of the aluminum can. Then, a 100μm thick, 30cm thick radiant cooling film was used to wrap the bottom and top of the aluminum can. 2 The outer wall and surface of the cup are sealed with a PE film to simulate the outer shell. Since the PE film is transparent, thin, and highly transparent in the infrared heat radiation band, it can reduce the weakening effect of the film on external heat radiation.

[0087] ② Use a cardboard simulated base with an air layer to separate the aluminum can from the ground by 30 cm to reduce heat conduction from the ground.

[0088] The experiment was conducted in an unobstructed environment with the radiant cooling film facing the sky. The film coverage ratio was tested as follows: Figure 1 86% and Figure 2 The cooling effect of the new cooling water cup and the internal temperature conditions in the 7% case are shown.

[0089] Through multiple experiments, we discovered that different time points and environments had significant impacts on the experiment. Analysis revealed that the insulation measures taken for the aluminum can were ineffective, so we considered using a thermos cup as the experimental subject. The thermos cup itself has excellent insulation properties. We covered the thermos cup with a radiant cooling film, replacing the bottle cap with the radiant cooling film, and achieved excellent experimental results. In experiments with water cups with and without lids, and with and without handles, we found that the handles had no effect on the operation of the radiant cooling film. The cup with a lid had a better cooling effect than the one without, as the lid blocks direct sunlight, achieving a certain degree of insulation.

[0090] Application Example 1:

[0091] In order to measure the cooling capacity of the radiant cooling film at different time points, the prototype was measured using Xiaomi's Mijia Bluetooth Thermometer and Hygrometer 2 (instrument error is 0.1°C and 1% RH) and Xinsite Thermocouple HT-9815 (instrument error is ±0.1°C) at 9:00 am and 2:00 pm Beijing time on July 21 in Dongguan City, Guangdong Province. The probes of the thermometer and hygrometer and thermocouple were placed inside and outside the sealed container respectively, and the internal and external temperature and humidity were recorded every 10 minutes. The recording lasted for 120 minutes and 12 data were obtained. After processing the obtained data, the obtained chart is shown ( Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 ) probes are placed inside and outside the water cup respectively (the probes are fixedly suspended inside the water cup and in the external air environment and do not come into contact with any entity);

[0092] The outer surface of the prototype is directly exposed to sunlight, and the outer wall is close to the radiation cooling film (flexible radiation cooling film with polymer metasurface structure), and then wrapped with a layer of transparent acrylic plate (insulating outer layer) on the outside. The experiment records temperature and humidity data every 10 minutes, and the total recording time is 120 minutes. The data is plotted into an image using Origin software, and the obtained chart is shown as follows ( Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 ).

[0093] Depend on Figure 7 、 Figure 9 It can be seen that the internal temperature of the prototype is always lower than the outdoor temperature, and as time goes by, the temperature difference tends to gradually expand and tends to stabilize and cool down. The maximum temperature difference measured in the experiment is 4.2℃, which shows the feasibility of the prototype and has excellent thermal insulation and cooling effects.

[0094] Application Example 2:

[0095] In order to verify the cooling capacity of different coverage (different designs) of radiant cooling films (such as Figure 1 The coverage rate is 86%, Figure 2 The coverage rate was 7%), and the Figure 1 、 Figure 2 Experimental setup:

[0096] Figure 1 : By building an aluminum metal can with a volume of 350ml, the bottom and top of the aluminum metal can are wrapped with 14μm thick aluminum foil to provide better insulation and heat preservation. The film is 22cm high and 21.98cm wide and is wrapped on the side of the container with a coverage rate of 86%;

[0097] Figure 2 : A film with a radius of 10 cm is placed on the top of the container, and then a 14 μm thick aluminum foil is used to wrap the sides and bottom of the cup to achieve better insulation and heat preservation, with a coverage rate of 7%.

[0098] Then, a cardboard with an air layer was used to separate the experimental device from the ground by 30 cm to reduce heat conduction from the ground; the experiment was carried out in an environment where the film was facing the sky without any obstruction.

[0099] Experimental results ( Figure 7 、 Figure 9 、 Figure 11 ) showed that placing the radiant cooling film on the side of the cup wall provided a greater cooling effect than placing it on the top. This is because when the radiant cooling film is placed on the outside of the cup wall, it covers a larger area, has a larger working area, and adheres closely to the cup wall, achieving better cooling. However, when the radiant cooling film is placed on the top of the cup, the raised top portion prevents it from adhering closely to the top of the cup, and the coverage area relative to the outer wall is also smaller, resulting in less effective cooling.

[0100] Application Example 3:

[0101] In the experimental performance, it was found that when an aluminum metal can is used as a sealed container for the experiment and tin foil is used to insulate the top and bottom of the cup, its insulation effect can never reach the insulation effect of a thermos cup. Since the thermos cup itself has a good insulation effect, the heat exchange is reduced, and the aluminum metal can sealed container has a thinner shell and a stronger heat conduction capacity, so the insulation effect is limited. When the radiant cooling film works to cool down, the heat absorbed by the cup is reduced, thereby maximizing the power of the radiant cooling film as much as possible. Experiments were conducted using a thermos cup, and the radiant cooling film was used instead of the thermos bottle cap (such as Figure 4 ), the thermos cup itself has a good heat insulation effect, which can further improve the cooling effect. The experimental results are as follows Figure 5 、Figure 6 shown.

[0102] Data analysis: Due to the excellent thermal insulation effect of the thermos cup, the temperature began to drop steadily at the beginning of the experiment, and reached a maximum temperature difference of 4.2°C at the 80th minute. The subsequent cooling effect continued at around 2 to 3°C.

[0103] In summary, the results of the prototype test of the new radiant cooling water cup demonstrate the feasibility of this patent. Without active cooling methods such as energy consumption and the addition of refrigerants, a 4.2°C daytime temperature reduction can be achieved (under an ambient temperature of 39°C, a light power density of 148W / m², the water cup placed in a cool location, and a humidity of 59.4% RH). This novel cooling water cup design based on a radiant cooling membrane achieves effective cooling. The use of this low-cost radiant cooling water cup will save significant cooling energy and significantly reduce carbon emissions. It provides all-weather cooling without any electricity, requires no extra operation, and is easily portable and suitable for use in any region. Furthermore, our design allows users to adjust the temperature themselves, which shows great potential for future development. Furthermore, this work provides a promising research and development direction for cooling liquids for outdoor sports and tropical regions.

[0104] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0105] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new cooling water cup based on radiation cooling film, characterized in that: The cup comprises a cup body with an opening facing upward and a cup cover for covering the opening of the cup body; Wherein, a second radiant cooling film is attached to the cup cover; The cup body comprises: a housing, wherein the housing surrounds a receiving space with openings at both ends; a base, the base being located at the bottom of the housing and covering the lower opening of the accommodating space; An inner liner, the inner liner being located in the accommodating space; The cup lid seals the upper opening of the cup body by screwing the lid on; The inner container is made of heat-conducting metal; The base is made of heat-insulating material.

2. The novel cooling water cup based on the radiation cooling film according to claim 1 is characterized in that: The shell is a transparent structure.

3. The novel cooling water cup based on radiation cooling film according to claim 2 is characterized in that: The shell is made of a transparent composite material.

4. The novel cooling water cup based on radiation cooling film according to claim 1 is characterized in that: A hollow space is provided between the inner container and the outer shell.

5. The novel cooling water cup based on radiation cooling film according to claim 1 is characterized in that: The second radiant cooling film is attached to the top of the cup cover.

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