Vacuum cup with automatic temperature control performance

Abstract

The utility model relates to a vacuum cup with automatic temperature control performance. The vacuum cup comprises a vacuum cup body, the vacuum cup body comprises a shell and an inner container, and a vacuum cavity is formed between the shell and the inner container; a temperature control element is arranged in the vacuum cavity; the temperature control element comprises a hose wound in the vacuum cavity, two ends of the hose are sealed, and the hose is filled with a liquid medium which expands with heat and contracts with cold; when the liquid medium expands, the temperature control element can be in contact with the inner wall of the shell and the inner container; and when the liquid medium shrinks, the temperature control element is in contact with the inner container and is separated from the inner wall of the shell. Compared with the prior art, the vacuum cup has the advantages of being simple and practical in structure, fast in cooling, long in heat preservation time and the like.

Description

Technical Field

[0001] This utility model relates to the field of thermos cup technology, and in particular to a thermos cup with automatic temperature control performance. Background Technology

[0002] Thermos flasks are a common household item in modern life, bringing great convenience to people's lives. The inner liner of a thermos flask is designed to reflect the radiation from hot water, while the vacuum layer between the inner liner and the body effectively isolates heat transfer. Furthermore, the structure of the thermos flask limits heat convection to a certain extent, thus slowing down heat loss and allowing for the enjoyment of hot water for a relatively long period.

[0003] However, while insulated cups bring people pleasant experiences, they also have some drawbacks. If the insulated cup's insulation is poor, it cannot keep the hot water inside at a comfortable temperature for an extended period. Conversely, if the insulated cup is well-insulated, the water inside may be too hot to drink directly for an extended period, potentially leading to scalding. In 2016, the International Agency for Research on Cancer (IARC), a branch of the World Health Organization (WHO), released an assessment report stating that hot drinks above 65°C can easily burn the oral mucosa and esophageal wall and have been classified as Group 2A carcinogens.

[0004] The temperature of hot water poured into a thermos is generally around 95℃. The relatively safe temperature for hot water to avoid scalding is below 65℃, and the suitable drinking temperature is generally between 40 and 50℃. Therefore, a thermos needs to both cool the added hot water (around 95℃) to between 40 and 50℃ and maintain the temperature for a relatively long time, keeping it at a suitable drinking temperature of 40 to 50℃.

[0005] CN119014689A discloses an integrated thermos and cooling cup capable of precisely controlling drinking water temperature. The thermos cup body includes an thermos section, a cooling section, a lid, a direct-drinking lid, a partition, and a travel mechanism. This design divides the thermos cup into two chambers, achieving step-by-step cooling of hot water by controlling the opening of the channel between the two chambers. However, the aforementioned integrated thermos and cooling cup has a complex structure, making it inconvenient for practical use.

[0006] CN114287786A discloses a vacuum insulated cup and its usage method. The cup's body comprises, from the outside to the inside, a vacuum insulation layer, a filling layer, and an inner liner. The vacuum insulation layer prevents heat loss from the inside of the cup to the external environment. A heat-conducting layer is provided between the filling layer and the inner liner. The filling layer is filled with a high-enthalpy phase change energy storage composite material to achieve rapid heat absorption and cooling, as well as heat release and insulation. The phase change energy storage composite material covers the inner liner. The phase change energy storage composite material has a melting point of 25℃ to 50℃. It contains at least two of paraffin wax, graphite, carbon black, or graphene. The phase change energy storage composite material has a multi-layered, cross-linked network structure. Utilizing the inherent properties of the high-enthalpy phase change energy storage composite material, it ensures that both high-temperature and low-temperature water can be regulated to a suitable temperature to meet consumers' needs for quickly drinking warm water. This vacuum insulated cup utilizes the heat absorption and cooling, and heat release and heat preservation functions of phase change materials to achieve temperature control. However, due to limitations such as product size, the amount of phase change material used is restricted, thus limiting the heat absorption or release capabilities of the material. Secondly, the phase change material can only achieve effective temperature control within its phase change range, resulting in a limited temperature control area. Furthermore, if the insulated cup is used continuously, the heat stored in the phase change material cannot be released quickly, affecting the cooling effect of subsequent uses, making the temperature control method less than ideal.

[0007] Therefore, given the shortcomings of existing thermos cups, such as complex structure and difficulty in simultaneously achieving rapid cooling and heat preservation, there is an urgent need to develop a new type of thermos cup with automatic temperature control performance. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of existing thermos cups in that they cannot simultaneously achieve rapid cooling and heat preservation, and to provide a thermos cup with automatic temperature control performance.

[0009] The objective of this utility model can be achieved through the following technical solutions:

[0010] A thermos cup with automatic temperature control performance includes a thermos cup body, wherein the thermos cup body includes an outer shell and an inner liner, and a vacuum cavity is formed between the outer shell and the inner liner;

[0011] The vacuum chamber is equipped with a temperature control element; the temperature control element includes a flexible tube wound around the vacuum chamber, the two ends of the flexible tube are sealed and the flexible tube is filled with a liquid medium that expands and contracts with temperature.

[0012] When the liquid medium expands, the temperature control element remains in contact with the inner wall of the outer shell and the inner liner; when the liquid medium contracts, the temperature control element contacts the inner liner and separates from the inner wall of the outer shell.

[0013] Furthermore, the hose is spirally wound around the outer surface of the inner liner in a circumferential direction.

[0014] Furthermore, the hose is wound with equal pitch, and the spacing between adjacent turns is 1.3-1.5 times the outer diameter of the hose.

[0015] Furthermore, the outer diameter of the hose is 5-7 mm.

[0016] Furthermore, the height of the temperature control element accounts for 95-98% of the total height of the vacuum chamber.

[0017] Furthermore, the hose is a silicone hose.

[0018] Furthermore, the liquid medium is paraffin oil.

[0019] Furthermore, when the liquid medium expands, the distance between the temperature control element and the inner wall of the housing approaches 0.

[0020] Furthermore, when the liquid medium contracts, the distance between the temperature control element and the inner wall of the housing is 3-5 mm.

[0021] Furthermore, when the liquid medium expands, the total height of the temperature control element is compressed and reduced, and the cross-section of the hose widens.

[0022] Furthermore, the thermos cup also includes a lid that seals with the body of the thermos cup, and the lid integrates a temperature detection component and a display component.

[0023] Furthermore, the temperature detection component and display component include a power supply, a temperature sensor, a controller, and a display screen.

[0024] Furthermore, the power supply is connected to the temperature sensor, the controller, and the display screen respectively; the temperature sensor is connected to the controller and is used to transmit temperature signals to the controller.

[0025] Furthermore, the controller is connected to the display screen to transmit the processed temperature signal to the display screen and display it.

[0026] Furthermore, the thermos cup is equipped with a handle ring on the cup body for easy handling by the user.

[0027] Furthermore, the inner liner is made of glass, ceramic, titanium alloy or stainless steel, the outer shell is made of stainless steel, and the lid is made of polypropylene.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) The thermos cup of this utility model intelligently switches the heat conduction path in the vacuum chamber by changing the volume of the temperature control element at different temperatures. It can promote rapid heat dissipation at high temperatures and block heat transfer to form heat preservation at a suitable inlet temperature, thus achieving excellent performance that balances rapid cooling and long-term heat preservation.

[0030] (2) When the temperature of the hot water inside the thermos cup exceeds the set temperature, the temperature control element installed on the inner wall of the thermos cup deforms and extends outward due to heat, and eventually comes into contact with the outer wall of the thermos cup, thereby conducting heat from the inner wall of the thermos cup with a higher temperature to the outer wall of the thermos cup with a lower temperature, so as to achieve the purpose of rapid cooling of the hot water inside the thermos cup; when the temperature of the hot water inside the thermos cup drops below the set temperature, the temperature control element will shrink and deform due to the cooling, and the temperature control element and the outer wall of the thermos cup will change from the contact state to the separation state, thereby preventing heat from being conducted from the inner wall of the thermos cup with a higher temperature to the outer wall of the thermos cup with a lower temperature, so as to achieve the purpose of continuous heat preservation of the hot water inside the thermos cup.

[0031] (3) The temperature control element of this utility model adopts a spiral hose structure with sealed ends, which can increase the contact area between the hose and the inner liner to improve the heat conduction effect during cooling, and does not require complex circuit control.

[0032] (4) The thermos cup of this utility model has a simple structure and does not require any destructive modification to the original thermos cup structure. It only needs to set a temperature control element in the existing vacuum cavity. The production cost is not high and it is easy to carry out large-scale industrial production.

[0033] (5) The thermos cup of this utility model can not only cool the hot water added to the thermos cup to a suitable drinking temperature range quickly, but also extend the time of maintaining this temperature range. It overcomes the disadvantage of the single function of traditional thermos cups and can bring users a better user experience without significantly increasing the production cost of the thermos cup. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the thermos cup of this utility model.

[0035] Figure 2 This is a schematic diagram and cross-sectional view of the temperature control element of this utility model.

[0036] Figure 3 This is a schematic diagram of the temperature control element of this utility model during expansion.

[0037] Figure 4 This is a schematic diagram of the temperature control element of this utility model when it contracts.

[0038] Figure 5 This is a schematic diagram of the temperature control element of this utility model under different temperature conditions.

[0039] Figure 6 This is a cross-sectional schematic diagram of the temperature control element of this utility model under different temperature conditions.

[0040] Figure 7 This is a schematic diagram showing the connection of the temperature detection component and the display component in Embodiment 3 of this utility model.

[0041] Explanation of markings in the diagram:

[0042] 1-Thermos cup body, 11-Outer shell, 12-Inner liner, 13-Vacuum chamber;

[0043] 2-Temperature control element, 21-Hose, 22-Liquid medium;

[0044] 3-Cup lid;

[0045] 4-Temperature detection and display components, 41-Power supply, 42-Temperature sensor, 43-Controller, 44-Display screen;

[0046] 5-Handheld ring. Detailed Implementation

[0047] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0048] In this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0049] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0050] Example 1:

[0051] This embodiment provides a thermos cup with automatic temperature control, including a thermos cup body 1. For example... Figure 1-4 As shown, the thermos cup body 1 of this embodiment specifically includes an outer shell 11 and an inner liner 12, and a vacuum cavity 13 is formed between the outer shell 11 and the inner liner 12.

[0052] In this embodiment, a temperature control element 2 is provided inside the vacuum chamber 13. The temperature control element 2 includes a flexible tube 21 wound inside the vacuum chamber 13. Both ends of the flexible tube 21 are sealed, and the flexible tube 21 is filled with a liquid medium 22 that expands and contracts with temperature. When the liquid medium 22 expands, the temperature control element 2 can maintain contact with the inner wall of the outer shell 11 and the inner liner 12; when the liquid medium 22 contracts, the temperature control element 2 contacts the inner liner 12 and disengages from the inner wall of the outer shell 11.

[0053] In this embodiment, when the hot water temperature is high, the temperature control element 2 deforms and extends outward due to heat, eventually coming into contact with the inner wall of the outer shell 11. This conducts heat from the hot inner wall of the thermos to the outer shell 11, achieving rapid cooling of the hot water inside the thermos 1. When the temperature of the hot water inside the thermos 1 drops to a suitable drinking temperature range, the temperature control element 2 contracts and deforms due to the cooling, changing from contact to separation with the inner wall of the outer shell 11. This prevents heat conduction and maintains the temperature of the hot water inside the thermos 1.

[0054] Example 2:

[0055] This embodiment provides a thermos cup with automatic temperature control, including a thermos cup body 1. Specifically, the thermos cup body 1 of this embodiment includes an outer shell 11 and an inner liner 12, with a vacuum cavity 13 formed between the outer shell 11 and the inner liner 12.

[0056] The difference from Example 1 is that, as Figure 2 As shown, the hose 21 in this embodiment adopts a spiral design, which is spirally wound around the outer surface of the inner liner 12. The hose 21 is wound with equal pitch, and the distance between adjacent spiral turns is 1.3-1.5 times the outer diameter of the hose 21. The outer diameter of the hose 21 is 5-7mm.

[0057] like Figure 5-6As shown, in this embodiment, the height of the temperature control element 2 accounts for 95-98% of the total height of the vacuum chamber. The height of the temperature control element 2 will be adjusted accordingly during expansion and contraction. When the liquid medium 22 expands, the temperature control element 2 can maintain contact with the inner wall of the outer shell 11 and the inner liner 12, and the distance between the temperature control element 2 and the inner wall of the outer shell 11 approaches 0. When the liquid medium 22 contracts, the temperature control element 2 contacts the inner liner 12 and separates from the inner wall of the outer shell 11. At this time, the distance between the temperature control element 2 and the inner wall of the outer shell 11 is 3-5mm, and the total height of the temperature control element 2 is compressed and reduced, while the cross-section of the hose 21 becomes wider.

[0058] In this embodiment, the hose 21 is a silicone hose, and the liquid medium 22 filled in the temperature control element 2 is a non-toxic and harmless liquid paraffin oil.

[0059] Example 3:

[0060] This embodiment provides a thermos cup with automatic temperature control, including a thermos cup body 1. The difference from Embodiment 1 is that the thermos cup in this embodiment also includes a polypropylene lid 3 that seals with the thermos cup body 1. The lid 3 integrates a temperature detection component and a display component 4. The thermos cup body 1 is also provided with a handle ring 5 for easy gripping.

[0061] The temperature detection component and display component 4 in this embodiment are conventional existing technologies in the field of small household appliances such as smart water cups and smart kettles, which facilitates observation of the actual temperature of the hot water in the cup. This embodiment provides one type of temperature detection component and display component 4, which specifically includes a power supply 41, a temperature sensor 42, a controller 43, and a display screen 44. The display screen 44 is mounted on the upper surface of the cup lid 3, and the other components are integrated into the cup lid 3 to prevent direct contact with water.

[0062] like Figure 7 As shown, in this embodiment, the power supply 41 supplies power to the temperature sensor 42, the controller 43, and the display screen 44. The temperature sensor 42 is connected to the controller 43 and is used to transmit the temperature signal to the controller 43. The controller 43 is connected to the display screen 44 and is used to transmit the processed temperature signal to the display screen 44, which then displays the signal. Specifically, in this embodiment, the temperature sensor 42 can be a DS18B20, the controller 43 can be an MSP430, the display screen 44 can be a 1602, and the power supply 41 can be a CR2032 button battery.

[0063] Example 4:

[0064] This embodiment provides a thermos cup with automatic temperature control. The thermos cup mainly consists of a cup body 1, a temperature control element 2, a lid 3, a temperature detection and display component 4, and a handle ring 5.

[0065] Specifically, in this embodiment, the thermos cup body 1 has a vacuum chamber 13 structure, which is jointly formed by the outer surface of the inner liner 12 of the thermos cup body 1 and the inner surface of the outer shell 11 of the thermos cup. A temperature control element 2 is installed inside the vacuum chamber 1. When the temperature of the hot water inside the thermos cup exceeds the set temperature, the temperature control element 2 deforms due to heat, and comes into contact with the outer shell 11, thereby transferring heat from the hotter inner liner 12 to the cooler outer shell 11, achieving the purpose of cooling the hot water added to the thermos cup. When the temperature of the hot water inside the thermos cup drops to the set temperature, the temperature control element 2 contracts and deforms due to the temperature drop, and the contact between the temperature control element 2 and the outer shell 11 changes from contact to separation, thereby preventing heat from being transferred from the hotter inner liner 12 to the cooler outer shell 11, achieving the purpose of keeping the hot water inside the thermos cup warm.

[0066] In this embodiment, the spiral-shaped flexible tube 21 and the temperature control element 2 are installed on the outer wall of the inner liner 12 of the thermos. The temperature control element 2 is a spiral-shaped flexible tube 21 filled with non-toxic and harmless liquid paraffin oil. Due to the thermal expansion and contraction properties of paraffin oil, when the temperature of the hot water in the thermos exceeds the set temperature (generally 45°C to 95°C), the spiral-shaped flexible tube 21 and the temperature control element 2 deform due to heat. The spiral-shaped flexible tube 21 and the temperature control element 2, which are installed on the outer surface of the inner liner 12 of the thermos, come into contact with the inner surface of the outer shell 11 of the thermos, thereby conducting heat from the hotter inner liner 12 to the cooler outer shell 11, achieving the purpose of cooling the hot water added to the thermos. See Figure 3 As shown in the figure, the gap between the temperature control element 2 and the outer casing 11 is small, and the gap is zero or close to zero.

[0067] When the temperature of the hot water inside the thermos drops to the set temperature, the spiral flexible tube 21 of the temperature control element 2 contracts and deforms due to the cooling effect. The temperature control element 2 and the inner surface of the thermos outer shell 11 change from contact to separation, thereby preventing heat from being conducted from the hotter inner liner 12 to the cooler outer shell 11, thus achieving the purpose of keeping the hot water inside the thermos warm. (See...) Figure 4 As shown, at this time, the gap between the temperature control element 2 and the outer casing 11 is relatively large, with a gap of 3-5mm.

[0068] The changes that occur in the spiral flexible tube 21 of the temperature control element 2 during heating in this embodiment are mainly twofold. In the vertical direction, such as... Figure 5 As shown, the total height of the temperature control element 2 will be compressed and reduced under high temperature conditions; in the horizontal direction, the cross-section of the hose 21 will change. Figure 6 The changes shown.

[0069] Experimental example:

[0070] In this experiment, a 500ml thermos cup filled with paraffin wax in a commercially available vacuum chamber (e.g., LKK 55℃) and a 500ml automatic temperature-controlled thermos cup filled with paraffin oil using the tubing 21 in Example 4 were compared in terms of cooling and heat preservation effects. In the experiment, the same volume and temperature of hot water were poured into both cups, the lids 3 were closed, and the time required for the cooling and heat preservation processes was observed and recorded as follows:

[0071]

[0072] The above experimental data shows that, with the lid closed, the automatic temperature-controlled thermos of this invention cools from 95℃ hot water to 65℃ in a shorter time compared to commercially available thermos flasks; and when maintaining a temperature above 45℃, the automatic temperature-controlled thermos of this invention also maintains the temperature for a longer time compared to commercially available thermos flasks with a vacuum chamber filled with paraffin.

[0073] In addition, in this experiment, after pouring in the same volume and temperature of hot water into the two types of thermos cups, the lids were opened, and the time required for the cooling and heat preservation processes was observed and recorded as follows:

[0074]

[0075] The above experimental data shows that, with the lid 3 open, the automatic temperature-controlled thermos cup of this invention also has a shorter cooling time and a longer heat preservation time above 45°C.

[0076] The experimental data above shows that the automatic temperature-controlled thermos cup with paraffin oil-filled temperature control element of this invention cools water from 95℃ to 65℃ in a shorter time than commercially available vacuum-filled paraffin oil thermos cups, while maintaining a temperature above 45℃ for a longer period. This automatic temperature-controlled thermos cup exhibits superior rapid cooling and heat preservation performance.

[0077] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A vacuum cup with automatic temperature control performance, comprising a vacuum cup body (1), characterized in that, The thermos cup body (1) includes an outer shell (11) and an inner liner (12), and a vacuum cavity (13) is formed between the outer shell (11) and the inner liner (12). The vacuum chamber (13) is equipped with a temperature control element (2); the temperature control element (2) includes a flexible tube (21) wound inside the vacuum chamber (13), the two ends of the flexible tube (21) are sealed and the flexible tube (21) is filled with a liquid medium (22) that expands and contracts with temperature; the flexible tube (21) is spirally wound around the outer surface of the inner liner (12) in a circumferential direction, the flexible tube (21) is wound with equal pitch, and the center distance between adjacent spiral turns is 1.3-1.5 times the outer diameter of the flexible tube (21); the height of the temperature control element (2) accounts for 95-98% of the total height of the vacuum chamber (13); When the liquid medium (22) expands, the temperature control element (2) can maintain contact with the inner wall of the outer shell (11) and the inner liner (12); when the liquid medium (22) contracts, the temperature control element (2) contacts the inner liner (12) and separates from the inner wall of the outer shell (11), and the distance between the temperature control element (2) and the inner wall of the outer shell (11) is 3-5mm.

2. The vacuum cup with automatic temperature control performance according to claim 1, characterized in that, The outer diameter of the hose (21) is 5-7 mm.

3. The vacuum cup with automatic temperature control performance according to claim 1, characterized in that, The hose (21) is a silicone hose, and the liquid medium (22) is paraffin oil.

4. The vacuum cup with automatic temperature control performance according to claim 1, characterized in that, When the liquid medium (22) expands, the distance between the temperature control element (2) and the inner wall of the outer shell (11) approaches 0.

5. The vacuum cup with automatic temperature control performance according to claim 1, characterized in that, When the liquid medium (22) expands, the total height of the temperature control element (2) is compressed and reduced, and the cross-section of the hose (21) becomes wider.

6. The vacuum cup with automatic temperature control performance according to claim 1, characterized in that, The thermos cup also includes a lid (3) that seals with the thermos cup body (1), and the lid (3) integrates a temperature detection component and a display component (4).

7. The vacuum cup with automatic temperature control performance according to claim 6, characterized in that, The temperature detection component and display component (4) include a power supply (41), a temperature sensor (42), a controller (43), and a display screen (44). The power supply (41) is connected to the temperature sensor (42), the controller (43) and the display screen (44) respectively; the temperature sensor (42) is connected to the controller (43) and is used to transmit the temperature signal to the controller (43); the controller (43) is connected to the display screen (44) and is used to transmit the processed temperature signal to the display screen (44).

8. The vacuum cup with automatic temperature control performance according to claim 1, characterized in that, The thermos cup body (1) is provided with a handle ring (5).

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