Foldable storage immersion heating milk warmer
By designing a foldable, immersion-type bottle warmer, and utilizing a pivotable support arm assembly and a modular immersion heating assembly, the problems of fixed structure, large size, and low heating efficiency of portable bottle warmers are solved, achieving both high-efficiency heating and portability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU FEIPEI TECH CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-26
AI Technical Summary
Existing portable bottle warmers suffer from problems such as fixed structure, large storage volume and inconvenience to carry, low heating efficiency, energy waste and complicated operation.
A foldable, immersion-type bottle warmer was designed, featuring a pivotable support arm assembly and a modular immersion heating assembly. The support arm assembly rotates between unfolded and folded positions, while the immersion heating assembly directly heats the liquid inside the container. Quick assembly and disassembly are achieved via an electrical coupler, and a built-in battery pack enhances portability.
It achieves a free conversion between a stable support and a compact storage form for the bottle warmer, improving heating efficiency, reducing energy waste, and reducing storage volume, while also being easy to operate.
Smart Images

Figure CN224403438U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a portable bottle warmer, specifically a foldable and immersion-type bottle warmer, belonging to the field of maternal and infant products technology. Background Technology
[0002] Portable bottle warmers are a common device used by modern families with young children when out and about or traveling, allowing them to heat milk or complementary foods for infants anytime, anywhere. Existing portable bottle warmers are mainly divided into water bath type, fan type, and contact type, but there are still technical shortcomings in achieving portability, efficiency, and energy saving.
[0003] Water bath bottle warmers use indirect heating, meaning the water inside the chamber is heated first, then the heat is conducted to the container walls and finally to the milk inside. This long heat conduction path and multiple media result in low thermal efficiency. Because their operating principle requires a heating chamber capable of simultaneously holding water and the container, this barrel or cup-shaped structure limits their size, making them bulky and impractical for portability. Furthermore, operation requires controlling the amount of water added, and the hot water must be poured out after use, making the process cumbersome.
[0004] Fan-type bottle warmers also use indirect heating, employing a fan to blow hot air across the heater, which is then transferred to the container walls and ultimately to the milk inside. Like fan-type warmers, they suffer from low thermal efficiency due to the long heat conduction path and multiple media involved. Furthermore, their heating efficiency is affected by the material and size of the bottle, leading to inaccurate heating temperatures, low efficiency, and a complex structure.
[0005] Contact bottle warmers use direct heating, employing a design where the bottle is inverted and screwed onto the heating base. The heating element is placed at the bottom of the liquid, directly heating the milk, eliminating the need for a water reservoir. However, to ensure stability during use, a bottle adapter structure is typically designed to fit different bottles. While this structure is stable during operation, leakage can occur due to user habits. Furthermore, because the heating element heats only one side, heat is wasted, resulting in relatively low efficiency and lower temperature measurement accuracy. Utility Model Content
[0006] Based on the above background, the purpose of this utility model is to provide a foldable and immersion-type bottle warmer, which solves the technical problems of existing portable bottle warmers, such as fixed structure, large storage volume and inconvenience to carry, low heating efficiency, energy waste and complicated operation.
[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0008] A foldable, retractable immersion bottle warmer includes:
[0009] A base for supporting containers;
[0010] A support arm assembly, one end of which is pivotally connected to the base so that the support arm assembly can rotate relative to the base between an unfolded working position and a folded storage position, wherein when the support arm assembly is in the working position, the other end of the support arm assembly is located above the base;
[0011] An immersion heating assembly is used to directly heat liquid in a container by immersion. The immersion heating assembly is detachably mounted on one end of the support arm assembly located above the base. The immersion heating assembly extends toward the base and is spaced apart from its top surface.
[0012] Preferably, one end of the support arm assembly is provided with a limiting pivot, and one end of the support arm assembly is pivotally connected to the base through the limiting pivot.
[0013] The limiting pivot provides a clear locking position for the unfolded and folded positions of the support arm assembly, ensuring it is stable in the working position and compact in the storage position.
[0014] Preferably, when the support arm assembly is in the storage position, the support arm assembly is either in contact with or parallel to the base.
[0015] This compact design allows the bottle warmer to fold into a neat, blocky structure, reducing its storage volume.
[0016] Preferably, the base is provided with a storage cavity for receiving the immersion heating assembly or its component parts.
[0017] The storage cavity provides dedicated storage space for the removable immersion heating components.
[0018] Preferably, the immersion heating assembly includes a heating element component, a temperature sensor, a heating element support, and a heating element connector. The heating element component and the temperature sensor are fixed to the lower part of the heating element support. The top end of the heating element support is detachably electrically coupled to the heating element connector, and the heating element connector is detachably electrically coupled to one end of the support arm assembly.
[0019] This multi-segment modular structure not only makes the disassembly and assembly of the immersion heating components more flexible, but also further reduces the size of individual components, making them easier to store in the storage cavity.
[0020] Preferably, the heating element is a PTC ceramic heater, a PI heating film device sealed in a metal housing, or a thick film heating device sintered onto a metal surface.
[0021] Preferably, the heating element support is provided with a dust cover that can slide along its axial direction, the dust cover being used to cover the opening of the container.
[0022] The sliding dust cover enhances the bottle warmer's adaptability to containers of different heights, effectively preventing dust from falling in during the heating process and providing some insulation.
[0023] Preferably, the heating element bracket and the heating element connector, as well as the heating element connector and the support arm assembly, are all detachably electrically coupled through an electrical coupler.
[0024] Preferably, the support arm assembly includes a support arm housing, a control circuit board, and a display module. The control circuit board is disposed inside the support arm housing and is electrically connected to the display module and the immersion heating assembly.
[0025] Preferably, the base includes a base housing and a battery pack, the battery pack being disposed within the base housing and electrically connected to the immersion heating assembly.
[0026] The battery pack is built into the base housing, freeing the bottle warmer from dependence on an external power source and further improving its portability.
[0027] Compared with the prior art, the present invention has the following advantages:
[0028] This utility model discloses a foldable and immersion-type bottle warmer. By setting a pivotable support arm assembly, the bottle warmer can freely switch between a working mode that provides stable support and a compact storage mode. It also features an immersion heating component that directly immerses itself in the liquid in the container for heating, thereby improving heating efficiency and reducing energy waste. Furthermore, the immersion heating component is designed to be detachable, further reducing the storage volume. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0030] Figure 1 This is a schematic diagram of the working state of a foldable and retractable immersion-type bottle warmer according to this utility model.
[0031] Figure 2 This is a structural diagram of a foldable and retractable immersion-type bottle warmer in its retracted state.
[0032] Figure 3 This is a cross-sectional view of the foldable and retractable immersion-type bottle warmer of this utility model in its retracted state.
[0033] Figure 4 This is a schematic diagram of the internal structure of a foldable, immersion-type bottle warmer in operation, according to this utility model:
[0034] Figure 5 This is a three-dimensional structural diagram of the heating element support and dust cover in this utility model;
[0035] In the diagram: 1. Base; 2. Support arm assembly; 3. Immersion heating assembly; 4. Container; 101. Base housing; 102. Storage cavity; 103. Battery pack; 201. Support arm housing; 202. Limiting pivot; 203. Control circuit board; 204. Display module; 301. Heating element component; 302. Temperature sensor; 303. Heating element bracket; 304. Heating element connector; 305. Dust cover; 306. Electrical coupler. Detailed Implementation
[0036] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.
[0037] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the field. Unless otherwise specified, the methods in the following embodiments are conventional methods in the field. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to facilitate explanation and provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.
[0039] An embodiment of this utility model discloses a foldable and retractable immersion-type bottle warmer, such as... Figure 1 and Figure 2 As shown, the foldable and retractable immersion-type bottle warmer includes a base 1, a support arm assembly 2, and an immersion heating assembly 3.
[0040] The base 1 includes a base housing 101 and a battery pack 103 disposed therein. The top of the base housing 101 is used to stably support the container 4. Figure 3 As shown, in order to achieve integrated storage of components, a storage cavity 102 is provided inside or on the side of the base housing 101. The size and shape of the storage cavity 102 are matched with the disassembled immersion heating assembly 3 or its component parts to accommodate it. The battery pack 103 is a high-capacity rechargeable lithium battery that provides power to the entire bottle warmer and also serves as a counterweight to increase the stability of the base 1.
[0041] like Figure 4 As shown, the support arm assembly 2 includes a support arm housing 201, a control circuit board 203 disposed inside it, and a display module 204 disposed outside it. One end of the support arm assembly 2 is pivotally connected to the base 1 via a limiting pivot 202. The limiting pivot 202 has a damping or locking structure inside to provide stable positioning and support force in the unfolded working position and the folded storage position. In the unfolded working position, the support arm assembly 2 is approximately perpendicular to the base 1, forming a stable support. In the folded storage position, the support arm assembly 2 is close to or parallel to the base 1, making the bottle warmer present a compact block structure, greatly reducing the space required for storage.
[0042] The immersion heating assembly 3 is used to directly heat the liquid inside the container 4 by immersion. It has a modular, detachable structure and includes a heating element connector 304, a heating element support 303, a heating element component 301, and a temperature sensor 302. Both the heating element component 301 and the temperature sensor 302 are fixed to the lower part of the heating element support 303, which is directly immersed in the liquid to perform heating and temperature measurement. The heating element component 301 is a PTC ceramic heater or a PI heating film device sealed in a metal housing, offering high heating efficiency and good safety. The temperature sensor 302 is an NTC thermistor for accurate monitoring of the liquid temperature.
[0043] Specifically, the immersion heating component 3 is assembled and connected as follows: the top of the heating element support 303 is detachably electrically coupled to the heating element connector 304; the heating element connector 304 is detachably electrically coupled to the free end of the support arm assembly 2. Both connections are achieved through standardized electrical couplers 306, specifically plug-in couplers or magnetic couplers. This structure not only ensures the stability and safety of the electrical connection but also allows users to quickly complete the assembly and disassembly operations without tools.
[0044] Specifically, such as Figure 5As shown, the heating element support 303 is also equipped with a dust cover 305 that can slide along its axial direction. The dust cover 305 is made of food-grade silicone material, and its center has a through-hole that fits the heating element support 303, allowing it to fit snugly and move along the support. During operation, the user slides the dust cover 305 downwards to cover the opening of the container 4, preventing foreign objects from falling in and providing auxiliary insulation.
[0045] In use, the user first unfolds the support arm assembly 2 from its folded state to its working position, and then assembles and installs the modular immersion heating assembly 3 onto the support arm assembly 2 sequentially via the electrical coupler 306. Next, the container 4 containing the liquid to be heated is placed on the base housing 101, and the lower end of the immersion heating assembly 3 is immersed in the liquid. After setting the desired temperature via the display module 204, the control circuit board 203 receives the command and begins to drive the heating element 301 to work. The temperature sensor 302 feeds back the liquid temperature data to the control circuit board 203 in real time. The control circuit board 203 adjusts the power output to the heating element 301 according to a preset control algorithm to control the liquid temperature. After the liquid reaches the set temperature, it switches to a heat preservation mode.
[0046] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A foldable and retractable immersion-type bottle warmer, characterized in that: This foldable, retractable immersion bottle warmer includes: Base (1) for supporting container (4); Support arm assembly (2), one end of which is pivotally connected to the base (1) so that the support arm assembly (2) can rotate relative to the base (1) between an unfolded working position and a folded storage position. When the support arm assembly (2) is in the working position, the other end of the support arm assembly (2) is above the base (1). An immersion heating assembly (3) is used to directly heat the liquid in the container (4) by immersion. The immersion heating assembly (3) is detachably mounted on one end of the support arm assembly (2) above the base (1). The immersion heating assembly (3) extends toward the base (1) and has a gap with its top surface.
2. The foldable and retractable immersion-type bottle warmer according to claim 1, characterized in that: One end of the support arm assembly (2) is provided with a limiting pivot (202), and one end of the support arm assembly (2) is pivotally connected to the base (1) through the limiting pivot (202).
3. The foldable and retractable immersion-type bottle warmer according to claim 1, characterized in that: When the support arm assembly (2) is in the storage position, the support arm assembly (2) is in contact with or parallel to the base (1).
4. A foldable, immersion-type bottle warmer according to claim 1, characterized in that: The base (1) is provided with a storage cavity (102) for storing the immersion heating assembly (3) or its component parts.
5. A foldable, immersion-type bottle warmer according to claim 1, characterized in that: The immersion heating assembly (3) includes a heating element component (301), a temperature sensor (302), a heating element support (303), and a heating element connector (304). The heating element component (301) and the temperature sensor (302) are fixed to the lower part of the heating element support (303). The top end of the heating element support (303) is detachably electrically coupled to the heating element connector (304). The heating element connector (304) is detachably electrically coupled to one end of the support arm assembly (2).
6. A foldable, immersion-type bottle warmer according to claim 5, characterized in that: The heating element component (301) is a PTC ceramic heater, a PI heating film device sealed in a metal housing, or a thick film heating device sealed and sintered on a metal surface.
7. A foldable and retractable immersion-type bottle warmer according to claim 5, characterized in that: The heating element support (303) is provided with a dust cover (305) that can slide along its axial direction, the dust cover (305) being used to cover the opening of the container (4).
8. A foldable, immersion-type bottle warmer according to claim 5, characterized in that: The heating element bracket (303) and the heating element connector (304), as well as the heating element connector (304) and the support arm assembly (2), are all detachably electrically coupled through an electrical coupler (306).
9. A foldable, immersion-type bottle warmer according to claim 1, characterized in that: The support arm assembly (2) includes a support arm housing (201), a control circuit board (203) and a display module (204). The control circuit board (203) is located inside the support arm housing (201) and is electrically connected to the display module (204) and the immersion heating assembly (3).
10. A foldable, immersion-type bottle warmer according to claim 1, characterized in that: The base (1) includes a base housing (101) and a battery pack (103). The battery pack (103) is disposed inside the base housing (101) and is electrically connected to the immersion heating component (3).