A vacuum cup

Abstract

This utility model relates to the field of heating equipment technology, and more particularly to a vacuum cup. The vacuum cup includes a cup body, a heating element, and a bottom shell. The bottom shell is connected to the bottom of the cup body, and a heating cavity is formed between the bottom shell and the outer bottom wall of the cup body. The heating element is located in the heating cavity, and a heat-conducting connector is provided between the heating element and the outer bottom wall of the cup body. The heating element is connected to the outer bottom wall of the cup body through the heat-conducting connector. Using this utility model, weld quality problems between the heating element and the cup body can be avoided, ensuring the assembly quality of the heating element and the production efficiency of the vacuum cup, while ensuring that the function of the vacuum cup itself is not affected.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and in particular to a vacuum cup. Background Technology

[0002] Vacuum cups are widely used in various daily life scenarios. They can maintain the internal liquid temperature for a long time, meeting people's drinking needs in various environments. Existing vacuum cups usually have a hole in the bottom of the cup body that is the same shape as the heating plate, and the heating plate is welded to the side wall of the hole. This allows the heat from the heating plate to be quickly conducted to the inner liner after being powered on, so as to heat the fluid inside.

[0003] Because the heating plate needs to withstand repeated heating-cooling cycles, the weld quality requirements between the heating plate and the sidewall of the hole are high. However, the welding space at the bottom of the cup is limited, which can easily lead to problems such as discontinuous welding, incomplete penetration or burn-through, affecting the welding quality of the heating plate and the production efficiency of the vacuum cup. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a vacuum cup that avoids weld quality issues between the heating element and the cup body, ensuring the assembly quality of the heating element and the production efficiency of the vacuum cup, while also ensuring that the vacuum cup's own functions are not affected.

[0005] To solve the above-mentioned technical problems, this utility model provides a vacuum cup, including a cup body, a heating element, and a bottom shell. The bottom shell is connected to the bottom of the cup body, and a heating cavity is formed between the bottom shell and the outer bottom wall of the cup body. The heating element is located in the heating cavity, and a heat-conducting connector is provided between the heating element and the outer bottom wall of the cup body. The heating element is connected to the outer bottom wall of the cup body through the heat-conducting connector.

[0006] As an improvement to the above solution, the contact area between the heat-conducting connector and the bottom wall of the cup body is greater than or equal to the cross-sectional area of ​​the heating element.

[0007] As an improvement to the above solution, the thermally conductive connector is a thermally conductive adhesive, and the heating element is bonded to the outer bottom wall of the cup body through the thermally conductive adhesive.

[0008] As an improvement to the above solution, the outer bottom wall of the cup body is formed with a positioning protrusion extending into the heating cavity, the heating element is provided with a connecting through hole, and the positioning protrusion is inserted into the connecting through hole.

[0009] As an improvement to the above solution, the outer wall of the positioning protrusion is welded to the inner wall of the connecting through hole; or the outer wall of the positioning protrusion is interference-fitted to the inner wall of the connecting through hole.

[0010] As an improvement to the above solution, the cup body is formed with an outer liner and an inner liner, and the heating element is connected to the outer bottom wall of the inner liner through the heat-conducting connector; the inner liner and the outer liner are connected through a vacuum cover, and the bottom shell is detachably connected to the vacuum cover.

[0011] As an improvement to the above solution, a mounting groove is formed on the side of the vacuum cover facing the heating cavity, and a mounting buckle is formed on the side of the bottom shell, and the mounting buckle is connected to the mounting groove.

[0012] As an improvement to the above solution, the heating element has conductive patterns formed on the side facing away from the cup body, the heating cavity is provided with a conductive sheet, one end of the conductive sheet is connected to the conductive patterns, the other end of the conductive sheet is insulated from the bottom shell, one end of the conductive sheet is connected to a conductive electrode, and the contact area between the conductive sheet and the conductive patterns is larger than the cross-sectional area of ​​the conductive electrode.

[0013] As an improvement to the above solution, a mounting groove is formed on the wall surface of the bottom shell facing the heating element, an insulating element is arranged in the mounting groove, and the other end of the conductive sheet abuts against the insulating element.

[0014] As an improvement to the above solution, the heating cavity is equipped with a first temperature controller and a second temperature controller, wherein the first temperature controller is a manually reset temperature controller and the second temperature controller is an automatically reset temperature controller.

[0015] Implementing this utility model has the following beneficial effects:

[0016] In this embodiment, when the heating element is installed on the cup body, a thermally conductive connector is used as the connection structure for the heating element. This allows for the assembly of the heating element and the cup body, ensuring the stability of the connection between them. This eliminates the need for welding to connect the heating element to the cup body, effectively avoiding weld quality issues and ensuring assembly quality and vacuum cup production efficiency. Simultaneously, the thermally conductive connector conducts the heat generated by the heating element to the interior of the vacuum cup, heating the liquid inside. This ensures that the vacuum cup's functionality remains unaffected when the heating element and cup body are separately connected, effectively guaranteeing the vacuum cup's thermal conductivity. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the vacuum cup in this utility model;

[0018] Figure 2 This is a cross-sectional view of the vacuum cup in this utility model;

[0019] Figure 3 yes Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is an exploded structural diagram of the vacuum cup in this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the heating element when it is attached to the cup body in this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the bottom shell of this utility model. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0024] In embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 4 As shown, the vacuum cup includes a cup body 1, a heating element and a bottom shell 3. The bottom shell 3 is connected to the bottom of the cup body 1, and a heating cavity 4 is formed between the bottom shell 3 and the outer bottom wall of the cup body 1. The heating element is located in the heating cavity 4. A heat-conducting connector 5 is provided between the heating element and the outer bottom wall of the cup body 1. The heating element is connected to the outer bottom wall of the cup body 1 through the heat-conducting connector 5.

[0025] In this embodiment, when the heating element is installed on the cup body 1, the heat-conducting connector 5 serves as the connection structure for the heating element. This allows for the assembly of the heating element and the cup body 1, ensuring the stability of the connection between them. This eliminates the need for welding to connect the heating element to the cup body 1, effectively preventing weld quality issues and ensuring assembly quality and vacuum cup production efficiency. Simultaneously, the heat-conducting connector 5 transfers the heat generated by the heating element to the interior of the vacuum cup, heating the liquid inside. This ensures that the vacuum cup's functionality remains unaffected when the heating element and cup body 1 are separately connected, effectively guaranteeing the vacuum cup's thermal conductivity.

[0026] In this embodiment, the contact area between the heat-conducting connector 5 and the outer bottom wall of the cup body 1 is greater than or equal to the cross-sectional area of ​​the heating element. This ensures that the heat-conducting connector can completely cover the heating element when connecting it to the outer bottom wall of the cup body 1. This allows the heat generated by the heating element to be evenly conducted to the interior of the cup body 1 via the heat-conducting connector 5, reducing localized overheating inside the cup body 1 or localized heat loss from the heating element and ensuring the energy utilization rate of the heating element. Simultaneously, the heat-conducting connector 5 provides full-surface fixation for the heating element and the cup body 1, further improving the connection stability between them.

[0027] Preferably, the contact area between the heat-conducting connector 5 and the outer bottom wall of the cup body 1 is greater than the cross-sectional area of ​​the heating element.

[0028] In one specific embodiment, the thermally conductive connector 5 is made of thermally conductive adhesive. The heating element is bonded to the outer bottom wall of the cup body 1 using thermally conductive adhesive. This allows for a separate connection between the heating element and the cup body 1 while simultaneously filling the microscopic gaps between them, reducing the contact thermal resistance and further ensuring the thermal conductivity of the vacuum cup. The thermally conductive adhesive can be made of silicone-based thermally conductive adhesive, epoxy resin thermally conductive adhesive, or metal-filled thermally conductive adhesive, etc., and is not specifically limited here.

[0029] Of course, in other embodiments, the thermally conductive connector 5 can also be a thermally conductive pad. The thermally conductive pad abuts against the wall of the cup body 1, and a boss facing the thermally conductive pad is formed on the outer side of the cup body 1. A locking hole is formed on the side of the thermally conductive pad. By inserting the boss into the locking hole, the thermally conductive pad is connected to the cup body 1. At the same time, an insert groove parallel to the outer bottom wall of the cup body 1 is formed on the side wall of the thermally conductive pad. The heating element is embedded in the insert groove, thereby connecting the heating element to the cup body 1 using the thermally conductive pad and providing heat conduction function for the heating element and the cup body 1 using the thermally conductive pad.

[0030] Furthermore, when using thermally conductive adhesive to connect the heating element to the cup body 1, to avoid misalignment between the heating element and the cup body 1, such as... Figure 4 and Figure 5 As shown, the outer bottom wall of the cup body 1 has a positioning protrusion 11 extending into the heating cavity 4, and the heating element is provided with a connecting through hole 21. When the heating element is assembled onto the outer bottom wall of the cup body 1, the positioning protrusion 11 is inserted into the connecting through hole 21. The positioning protrusion 11 and the connecting through hole 21 serve as a positioning structure for assembling the heating plate 2, which can ensure the relative position between the heating element and the outer bottom wall of the cup body 1. This avoids the problem of local overheating caused by misalignment after the heating element is assembled with the cup body 1, and further ensures uniform heat conduction of the heating element to the cup body 1.

[0031] Furthermore, the outer wall of the positioning protrusion 11 is welded to the inner wall of the connecting through hole 21; or the outer wall of the positioning protrusion 11 is interference-fitted to the inner wall of the connecting through hole 21. Thus, the positioning protrusion 11 and the connecting through hole 21 can be used to connect the heating element to the outer bottom wall of the cup body 1. The connection structure formed by the positioning protrusion 11 and the connecting through hole 21 is used in conjunction with the heat-conducting connector 5 to further ensure the connection stability between the heating element and the cup body 1 and prevent the heating element from falling off the cup body 1 and affecting the heat conduction performance of the vacuum cup.

[0032] In this embodiment, as Figure 2As shown, the cup body 1 has an outer liner 12 and an inner liner 13. The heating element is connected to the outer bottom wall of the inner liner 13 via a heat-conducting connector 5. The inner liner 13 and the outer liner 12 are connected by a vacuum cover 14, so that the vacuum cover 14, the inner wall surface of the outer liner 12, and the outer wall surface of the inner liner 13 form a vacuum insulation cavity 16 to ensure the heat preservation effect of the vacuum cup on the liquid inside the cup body 1. Specifically, after the inner liner 13, the outer liner 12, and the vacuum cover 14 are assembled, the vacuum insulation cavity 16 can be evacuated using a vacuum pump or other vacuum equipment. After evacuation, the heating element is connected to the outer bottom wall of the inner liner 13 via the heat-conducting connector 5.

[0033] When vacuuming the vacuum cup, some vacuum cups may fail to meet the vacuum standard. To facilitate revacuuming the vacuum cup, the bottom shell 3 and the vacuum cover 14 are detachably connected. In case of vacuum cup failure (such as excessive residual gas in the vacuum insulation chamber 16), the bottom shell 3 can be removed and revacuumed, effectively reducing the product scrap rate caused by substandard vacuum during testing.

[0034] As an optional embodiment, such as Figure 4 and Figure 5 As shown, a mounting groove 15 is formed on the side of the vacuum cover 14 facing the heating chamber 4, and a mounting buckle 31 is formed on the side of the bottom shell 3. The mounting buckle 31 is engaged with the mounting groove 15 to achieve a detachable connection between the bottom shell 3 and the vacuum cover 14. Thus, by prying the mounting buckle 31 inward, the bottom shell 3 can be easily assembled into the vacuum cover 14 to achieve a connection and fixation between the bottom shell 3 and the vacuum cover 14; or the bottom shell 3 can be removed from the vacuum cover 14 to re-evacuate the vacuum insulation chamber 16.

[0035] In this embodiment, to facilitate the generation of heat for heating the liquid using a heating element, such as... Figure 4 and Figure 5 As shown, conductive ridges 22 are formed on the side of the heating element away from the cup body 1. A conductive sheet 41 is arranged in the heating cavity 4. One end of the conductive sheet 41 is connected to the conductive ridges 22, and the other end of the conductive sheet 41 is insulated from the bottom shell 3. A conductive electrode (not shown in the figure) is connected to one end of the conductive sheet 41. The conductive electrode can be electrically connected to an external circuit to pass current into the conductive ridges 22 of the heating element, so that the heating element can generate heat and heat the liquid in the vacuum cup through heat conduction. Furthermore, the contact area between the conductive sheet 41 and the conductive ridges 22 is larger than the cross-sectional area of ​​the conductive electrode to avoid concentrated current input to the conductive electrode, which could cause local overheating or ablation of the conductive ridges 22 and affect the heat generation of the heating element.

[0036] Specifically, conductive textures 22 can be formed on the side of the heating element away from the cup body 1 by means of chemical etching or mechanical removal, and the shape of conductive textures 22 can be formed according to the actual designed current path.

[0037] It should also be noted that the conductive sheet 41 and the conductive electrodes can be arranged in two sets, one set as the positive electrode of the conductive ridge 22 and the other set as the negative electrode of the conductive ridge 22, so that a current loop can be formed between the conductive ridge 22 and the external circuit.

[0038] Specifically, such as Figure 6 As shown, a mounting groove 32 is formed on the wall of the bottom shell 3 facing the heating element. An insulating element is arranged in the mounting groove 32. The other end of the conductive sheet 41 abuts against the insulating element to insulate the bottom shell 3 from the conductive sheet 41, so as to prevent the bottom shell 3 from becoming electrified and affecting the safety of use.

[0039] Preferably, the insulating element can be an insulating gasket embedded in the mounting groove 32. The insulating gasket and the other end of the conductive sheet 41 can be connected by fasteners such as bolts or studs, or by adhesive bonding. No specific limitation is made here.

[0040] In this embodiment, as Figure 1 and Figure 4 As shown, the heating chamber 4 is equipped with a first thermostat 42 and a second thermostat 43. The first thermostat 42 is a manually reset thermostat, and the second thermostat 43 is an automatically reset thermostat. The automatically reset thermostat can automatically disconnect the circuit when the temperature of the heating element exceeds a set value (e.g., 100℃), causing the vacuum cup to stop heating the liquid. When the temperature drops, it automatically resets and reconnects the circuit, allowing the vacuum cup to resume heating, thus achieving constant temperature control of the vacuum cup. The manually reset thermostat can disconnect the circuit when the temperature reaches a higher safety threshold (e.g., 120℃) and will not automatically reset. This provides final protection for the vacuum cup in case of dry burning, circuit breakage, or failure of the automatically reset thermostat, and forces the user to troubleshoot overheating issues to prevent damage to the vacuum cup. By utilizing the cooperation of the first thermostat 42 and the second thermostat 43, the vacuum cup can meet daily constant temperature requirements while minimizing safety hazards.

[0041] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this invention, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A vacuum cup, characterized in that, The device includes a cup body, a heating element, and a bottom shell. The bottom shell is connected to the bottom of the cup body, and a heating cavity is formed between the bottom shell and the outer bottom wall of the cup body. The heating element is located in the heating cavity, and a heat-conducting connector is provided between the heating element and the outer bottom wall of the cup body. The heating element is connected to the outer bottom wall of the cup body through the heat-conducting connector.

2. The vacuum cup of claim 1, wherein, The contact area between the heat-conducting connector and the bottom wall of the cup body is greater than or equal to the cross-sectional area of ​​the heating element.

3. Vacuum cup according to claim 1 or 2, characterized in that The thermally conductive connector is made of thermally conductive adhesive, and the heating element is bonded to the outer bottom wall of the cup body through the thermally conductive adhesive.

4. The vacuum cup according to claim 1 or 2, characterized in that, The outer bottom wall of the cup body has a positioning protrusion extending into the heating cavity, and the heating element is provided with a connecting through hole, into which the positioning protrusion is inserted.

5. The vacuum cup of claim 4, wherein, The outer wall of the positioning protrusion is welded to the inner wall of the connecting through hole; or the outer wall of the positioning protrusion is interference-fitted to the inner wall of the connecting through hole.

6. The vacuum cup of claim 1, wherein, The cup body has an outer liner and an inner liner. The heating element is connected to the outer bottom wall of the inner liner through the heat-conducting connector. The inner liner and the outer liner are connected by a vacuum cover. The bottom shell is detachably connected to the vacuum cover.

7. The vacuum cup of claim 6, wherein, The vacuum cover has a mounting groove on the side facing the heating cavity, and the bottom shell has a mounting buckle on the side, which is connected to the mounting groove.

8. The vacuum cup according to claim 1, characterized in that, The heating element has conductive patterns on its side away from the cup body. A conductive sheet is arranged in the heating cavity. One end of the conductive sheet is connected to the conductive patterns, and the other end of the conductive sheet is insulated from the bottom shell. A conductive electrode is connected to one end of the conductive sheet, and the contact area between the conductive sheet and the conductive patterns is larger than the cross-sectional area of ​​the conductive electrode.

9. The vacuum cup according to claim 8, characterized in that, The bottom shell has a mounting groove on the wall facing the heating element, and an insulating element is arranged in the mounting groove. The other end of the conductive sheet abuts against the insulating element.

10. The vacuum cup according to claim 1, characterized in that, The heating cavity is equipped with a first temperature controller and a second temperature controller. The first temperature controller is a manually reset temperature controller, and the second temperature controller is an automatically reset temperature controller.

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