Closed loop milk warming air duct structure
By using spiral heating and temperature sensor control within a closed-loop warming air duct structure, the problems of uneven heating and insufficient heat preservation of the baby bottle are solved, achieving uniform heating and long-term heat preservation of the milk, ensuring temperature accuracy and nutrient preservation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN LEQIN TECHNOLOGY CO LTD
- Filing Date
- 2025-03-04
- Publication Date
- 2026-07-21
AI Technical Summary
Existing bottle heating methods cannot maintain temperature for extended periods and result in uneven heating, leading to inaccurate milk temperature and nutrient loss.
It adopts a closed-loop milk warming air duct structure, which uses hot air in the closed-loop air duct to heat from the bottom up in a spiral. Combined with NTC temperature sensor and heat preservation components, it ensures that the milk in the bottle is kept warm at the set temperature for a long time, and reduces heat loss through heat conduction sheet and silicone tongue.
It achieves uniform heating and long-term heat preservation of milk in the bottle, reduces temperature fluctuations and nutrient loss, and improves heating efficiency and temperature control accuracy.
Smart Images
Figure CN224522918U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of maternal and infant products technology, and in particular to a closed-loop milk warming air duct structure. Background Technology
[0002] In reality, many bottles of unfinished breast milk are kept warm with warm water or heated with boiling water. Neither of these methods can keep the milk warm for a long time, nor can they guarantee the accuracy of the temperature. These heating methods will also cause loss of freshness and nutrients. There are two types of milk warmers on the market: hot air and heating wire. The hot air type has only one air outlet or an open surround air duct, which is prone to uneven heating and slow heating. The heating wire type surrounds the heating wire outside the heat preservation area and is a certain distance from the bottle, which leads to insufficient heat conduction and difficulty in heating. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a closed-loop milk warming duct structure. This structure allows unfinished bottles to be placed back into the milk shaker for warming, facilitating subsequent feeding and reducing waste. It features only a temperature measuring function and a warming area, ensuring that the milk in the bottle remains at the set temperature for an extended period.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A closed-loop milk warming duct structure includes a closed-loop duct upper cover, an insulation component, an NTC temperature sensor group, a closed-loop duct lower cover, a heating component, a fan, and a fan cover. The closed-loop duct lower cover is fixedly installed below the closed-loop duct upper cover. The internal spaces of the closed-loop duct upper cover and the closed-loop duct lower cover form a closed-loop duct area. The closed-loop duct lower cover has an air duct slope and an air inlet A. The fan is installed below the closed-loop duct lower cover. Both the heating component and the fan are installed inside the fan cover. The fan blows air that is heated by the heating element and guided into the closed-loop air duct area through the fan cover. The closed-loop air duct cover has air outlets on all four sides. The insulation component includes a soft rubber cover, an elastic retaining ring upper cover, and an elastic retaining ring lower cover. The soft rubber cover, the elastic retaining ring upper cover, and the elastic retaining ring lower cover are sequentially fastened together. The insulation component and the insulation area form a sealed area. The elastic retaining ring upper cover, the elastic retaining ring lower cover, and the soft rubber cover are combined to form the insulation area. The elastic retaining ring upper cover and the elastic retaining ring lower cover have air inlets B on all four sides.
[0005] Preferably, the soft rubber cover is provided with a silicone tongue to reduce the loss of hot air and heat and to provide insulation.
[0006] Preferably, a heat-conducting sheet is installed on the inner surface of the elastic retaining ring cover, and the heat-conducting sheet is used to keep the bottom of the bottle warm.
[0007] Preferably, the NTC temperature sensor group is installed at the bottom inside the elastic retaining ring cover.
[0008] Preferably, the airflow direction generated by the fan startup is from bottom to top.
[0009] Preferably, the heating element, fan, and NTC temperature sensor group are electrically connected.
[0010] Compared with the prior art, the advantages of this utility model are as follows: Hot air is emitted from all sides of the closed ring and from the bottom upwards. The shaker itself has a rotating function that simultaneously spirals the hot air upwards, thus achieving a uniform heating effect. This method reduces waste and features only a temperature measuring function and a heat preservation area to ensure that the milk in the bottle is kept at the set temperature for a long time. Attached Figure Description
[0011] Figure 1 This is an exploded view of a closed-loop milk warming air duct structure proposed in this utility model; Figure 2 for Figure 1 A schematic diagram of the combination; Figure 3 This is a schematic diagram of the structure of the lower cover of a closed-loop ventilation duct; Figure 4 This is a schematic diagram of an explosion of the thermal insulation component; Figure 5 for Figure 2 A schematic diagram of the cross-sectional structure.
[0012] In the diagram: 1. Closed-loop air duct top cover, 110. Air outlet, 2. Insulation component, 210. Silicone tongue, 220. Soft rubber cover, 230. Heat-conducting sheet, 240. Insulation zone, 250. Elastic retaining ring top cover, 260. Air inlet B, 270. Elastic retaining ring bottom cover, 3. NTC temperature sensor group, 4. Closed-loop air duct bottom cover, 410. Closed-loop air duct area, 420. Air duct slope, 430. Air inlet A, 5. Heating component, 6. Fan, 7. Fan cover. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0014] Reference Figures 1-5 A closed-loop milk warming air duct structure includes a closed-loop air duct upper cover 1, a heat insulation component 2, an NTC temperature sensor group 3, a closed-loop air duct lower cover 4, a heating component 5, a fan 6, and a fan cover 7. The lower cover 4 of the closed-loop air duct is fixedly installed below the upper cover 1 of the closed-loop air duct. The internal space of the upper cover 1 and the lower cover 4 of the closed-loop air duct forms a closed-loop air duct area 410. The lower cover 4 of the closed-loop air duct is provided with an air duct slope 420 and an air inlet A430. The fan 6 is installed below the lower cover 4 of the closed-loop air duct. The heating element 5 and the fan 6 are both installed inside the fan cover 7. The heating element 5 is an adjustable heating wire, which can heat the flowing air. The airflow direction generated by the fan 6 when it is turned on is from bottom to top. The air blown by the fan 6 passes through the heating element 5. Heating is guided into the closed ring air duct area 410 through the fan cover 7. The closed ring air duct cover 1 has air outlets 110 around its perimeter. The closed ring air duct area 410 forms an air duct from large to small due to the slope of the air duct 420 from low to high, making the airflow more uniform, that is, the hot air more uniform. The closed ring air duct area 410 effectively prevents the loss of hot air and heat. The hot air can only be discharged from the air outlets 110 on the upper perimeter and enters the heat preservation area 240 through the side air inlets B260. The heating component 5, fan 6 and NTC temperature sensor group 3 are electrically connected. The insulation component 2 includes a soft rubber cover 220, an elastic retaining ring upper cover 250, and an elastic retaining ring lower cover 270. The soft rubber cover 220, the elastic retaining ring upper cover 250, and the elastic retaining ring lower cover 270 are sequentially fastened together. The insulation component 2 and the insulation area 240 form a sealed area. The elastic retaining ring upper cover 250, the elastic retaining ring lower cover 270, and the soft rubber cover 220 are combined to form the insulation area 240. The insulation area 240 achieves a good and uniform heating effect because the hot air spirals upward due to the rotation. The elastic retaining ring upper cover 250 and the elastic retaining ring lower cover 270 are provided with air inlets B260 on all four sides. The soft rubber cover 220 is provided with a silicone tongue 210 to reduce the loss of hot air and heat and to play a role in heat preservation. Among them, a heat-conducting plate 230 is installed on the inner surface of the elastic retaining ring cover 250. The heat-conducting plate 230 is used to keep the bottom of the bottle warm. The NTC temperature sensor group 3 is installed at the bottom of the elastic retaining ring cover 270, which can contact the bottle and sense and test the temperature.
[0015] In this invention, when the device is started, the fan 6 begins to work, generating an upward airflow. The fan 6 is located below the lower cover 4 of the closed-loop duct. The airflow generated by the fan 6 first passes through the heating element 5, which is composed of an adjustable heating wire and can heat the airflow. The heated airflow is then guided by the fan cover 7 and enters the closed-loop duct area 410 formed by the upper cover 1 and the lower cover 4 of the closed-loop duct. The duct slope 420 and air inlet A430 designed on the lower cover 4 of the closed-loop duct help guide the airflow smoothly into the duct area. Due to the slope design, a gradually narrowing duct cross-section is formed. To ensure a more uniform distribution of airflow (hot air) within the duct, the special design of the closed-loop duct area 410 not only optimizes the uniformity of airflow but also effectively reduces the loss of hot air. After the hot air is evenly distributed within the duct, it flows out through the air outlets 110 evenly distributed around the closed-loop duct cover 1, forming a uniform heating environment surrounding the bottle. The addition of the insulation component 2 further enhances the insulation performance of the system. The insulation component 2 consists of a soft rubber cover 220, an elastic retaining ring upper cover 250, and an elastic retaining ring lower cover 270 that are sequentially snapped together to form a sealed area. The silicone tongue 210 on the soft rubber cover 220 effectively reduces the loss of hot air and enhances the insulation effect. In addition, the heat-conducting plate 230 installed on the inner surface of the elastic retaining ring lower cover 270 directly contacts the bottom of the bottle, using the principle of heat conduction to keep the bottle warm. This design not only improves heating efficiency but also ensures that the bottle is heated evenly. The NTC temperature sensor group 3 is installed at the bottom inside the elastic retaining ring lower cover 270, which can directly contact the bottle and monitor the bottle's temperature in real time. This function allows users to adjust the output power of the heating element 5 according to actual needs, thereby precisely controlling the heating temperature and avoiding overheating or overcooling.
[0016] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A closed-loop milk warming air duct structure, characterized in that, include: Enclosed loop duct top cover (1), insulation component (2), NTC temperature sensor group (3), enclosed loop duct bottom cover (4), heating component (5), fan (6), fan cover (7); The lower cover (4) of the closed ring air duct is fixedly installed below the upper cover (1) of the closed ring air duct. The internal space of the upper cover (1) and the lower cover (4) of the closed ring air duct forms a closed ring air duct area (410). The lower cover (4) of the closed ring air duct is provided with an air duct slope (420) and an air inlet A (430). The fan (6) is installed below the lower cover (4) of the closed ring air duct. The heating element (5) and the fan (6) are both installed inside the fan cover (7). The fan (6) blows air through the heating element (5) and heats it. The air is guided into the closed ring air duct area (410) through the fan cover (7). The upper cover (1) of the closed ring air duct is provided with air outlets (110) around its perimeter. The heat insulation component (2) includes a soft rubber cover (220), an elastic retaining ring upper cover (250), and an elastic retaining ring lower cover (270). The soft rubber cover (220), the elastic retaining ring upper cover (250), and the elastic retaining ring lower cover (270) are connected in sequence. The heat insulation component (2) and the heat insulation area (240) form a sealed area. The elastic retaining ring upper cover (250), the elastic retaining ring lower cover (270), and the soft rubber cover (220) are combined to form the heat insulation area (240). The elastic retaining ring upper cover (250) and the elastic retaining ring lower cover (270) are provided with air inlets B (260) on all four sides.
2. The closed-loop milk warming air duct structure according to claim 1, characterized in that, The soft rubber cover (220) is provided with a silicone tongue (210) to reduce the loss of hot air and heat and to keep warm.
3. The closed-loop milk warming air duct structure according to claim 1, characterized in that, A heat-conducting plate (230) is installed on the inner surface of the elastic retaining ring cover (250), and the heat-conducting plate (230) is used to keep the bottom of the bottle warm.
4. The closed-loop milk warming air duct structure according to claim 1, characterized in that, The NTC temperature sensor group (3) is installed at the bottom inside the elastic retaining ring cover (270).
5. The closed-loop milk warming air duct structure according to claim 1, characterized in that, The airflow direction generated by the start of the fan (6) is from bottom to top.
6. The closed-loop milk warming air duct structure according to claim 1, characterized in that, The heating element (5), fan (6) and NTC temperature sensor group (3) are electrically connected.