Heating structure, temperature measuring structure and bottle warmer

Abstract

This utility model relates to the heating structure, temperature measuring structure, and the bottle warmer itself, belonging to the field of maternal and infant electrical appliance technology. It utilizes the weight of the bottle to clamp it and conduct heat from the heating film to the bottle's side wall, improving heating efficiency and user comfort. First and second temperature sensors are used for precise measurement. The bottle warmer divides the heating process into multiple stages. When the milk level is far below the target temperature, a high-power heating method is used to quickly raise the milk temperature; when the milk level is close to the target temperature, a low-power heating method is used to slowly raise the milk temperature. This reduces residual heat interference from the heating film and temperature conduction components in the later stages of heating, improving the accuracy of the actual milk temperature. Simultaneously, this temperature control method ensures that the surface temperature of the heating film remains within a controllable range higher than the liquid temperature, better protecting the milk quality and minimizing damage to its nutrients.

Description

Technical Field

[0001] This utility model relates to the field of household maternal and infant technology, specifically to a heating structure, a temperature measuring structure, and a bottle warmer. Background Technology

[0002] Bottle warmers are primarily used to keep milk, juice, and other foods warm to a temperature suitable for babies. Currently, there are various heating methods available for bottle warmers, including base heating, water bath heating, steam heating, and warm air heating. While base heating technology heats up quickly, it can lead to uneven heating of the milk, and the heating plate needs to be cleaned promptly after use, affecting the baby's feeding experience. Water bath heating technology ensures more even heating of the milk, but its heating speed is slower and cannot meet the need for rapid heating. After a water bath, the bottle needs to be wiped dry, which is inconvenient and can easily breed bacteria, which is detrimental to the baby's health. Steam heating technology uses high-temperature steam convection, which improves heating efficiency, but there are still problems with localized overheating or incomplete heating, and the need to clean the bottle after heating is also inconvenient. Warm air heating is convenient to operate, but it produces some noise, affecting user comfort.

[0003] How to improve both the heating efficiency and user comfort of milk warmers has become an urgent problem to be solved in the industry.

[0004] Furthermore, existing bottle warmers suffer from inaccurate temperature control to varying degrees, especially those that do not use a water bath method. This inaccuracy can lead to excessively high or low temperatures, damaging the nutritional value of the milk. Research indicates that current technologies primarily address temperature detection accuracy by improving the precision of the temperature sensor. However, this approach is limited by cost and the usage environment, resulting in unsatisfactory overall performance. Utility Model Content

[0005] To address the issues of low heating efficiency and inaccurate temperature control in existing bottle warmers, this invention provides a heating structure, a temperature measuring structure, and a bottle warmer, thereby improving heating efficiency and temperature control accuracy.

[0006] The present invention adopts the following technical solution:

[0007] A heating structure for a bottle warmer includes a base with a space for holding a bottle. The space of the base is provided with a clamping structure, which includes at least two L-shaped clamping arms arranged opposite each other. Each clamping arm has a vertical arm and a connected horizontal arm. A heating film is provided on the inner side of the vertical arm. Each clamping arm is hinged to a fixed hinge part. The clamping arm can swing relative to the hinge point. When the horizontal arm on the lower side of the clamping arm is subjected to a downward force generated by the weight of the bottle, the vertical arm on the upper side of the clamping arm tilts inward to press the heating film against the bottle. The heating film transfers heat to the liquid in the bottle through heat conduction.

[0008] Furthermore, the vertical arm has an elastic fitting structure. When the vertical arm is pressed against the bottle, the elastic fitting structure undergoes elastic deformation, improving the fit between the heating film and the bottle.

[0009] Furthermore, the elastic bonding structure is an elastic body that constitutes part or all of the material of the vertical arm, and the deformation direction of the elastic body is towards the bonding area between the heating film and the bottle.

[0010] Furthermore, the elastic bonding structure is a spring, the vertical arm includes an upper vertical arm and a lower vertical arm, the heating film is located on the upper vertical arm, and the two ends of the spring connect the upper and lower vertical arms together.

[0011] This utility model also provides a temperature measuring structure for a bottle warmer, including the heating structure of the bottle warmer described above, and a first temperature sensor located on the vertical arm that can detect the side of the bottle. A second temperature sensor that can detect the temperature of the bottom of the bottle is also provided at the bottom of the seat housing space. The first and second temperature sensors are electrically connected to the control module.

[0012] Furthermore, the first temperature sensor is connected to the vertical arm via a first elastic pressing part, so that the detection end of the first temperature sensor is elastically pressed against the side wall of the bottle; the second temperature sensor is connected to the base via a second elastic pressing part, so that the detection end of the second temperature sensor is elastically pressed against the bottom of the bottle.

[0013] Furthermore, the heating film is also provided with a third temperature sensor for detecting the temperature of the heating surface of the heating film, and the third temperature sensor is electrically connected to the control module.

[0014] This utility model also provides a bottle warmer, including the heating structure, the temperature measuring structure, and the temperature control method described above.

[0015] The advantages of this utility model compared to the prior art are as follows:

[0016] By setting up a clamping structure, the weight of the bottle is converted into a clamping force by the vertical arm tilting inward, which presses the heating film firmly onto the bottle to achieve the purpose of warming the milk. Since baby bottles are generally long and cylindrical structures with a small bottom area, the side heating method of this device with multiple heating films provides a larger and more uniform heating area compared to the bottom heating method, thus improving heating efficiency. The heating method of the heating film also eliminates water stains, has low operating noise, and improves user comfort.

[0017] By setting up first and second temperature sensors, the temperature difference between the two sensors is used to detect the milk temperature and the heating temperature of the side wall of the bottle in real time, thereby improving the accuracy of temperature measurement and control.

[0018] When the bottle warmer is working, the heating process is divided into multiple heating stages. When the milk level is far below the target temperature, a high-power heating method is used to quickly raise the milk temperature. When the milk level is close to the target temperature, a low-power heating method is used to slowly raise the milk temperature. This reduces the interference of residual heat from the heating film and temperature conduction components in the later stages of heating, improving the accuracy of the actual milk temperature. At the same time, this temperature control method ensures that the surface temperature of the heating film remains within a controllable range higher than the liquid temperature, better protecting the milk quality and minimizing damage to its nutrients. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the use of the bottle warmer according to an embodiment of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the bottle warmer in an embodiment of this utility model;

[0021] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure;

[0022] Figure 4 This is a schematic diagram of another elastic bonding structure according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic block diagram of the temperature measuring structure circuit of the bottle warmer in this embodiment of the utility model;

[0024] Figure 6 This is a schematic block diagram illustrating the steps of the temperature control method for the bottle warmer in this embodiment of the present invention;

[0025] Figure 7 This is the milk temperature curve in an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 100, base; 101, hinge; 102, hinge seat; 103, second elastic pressing part; 200, clamping structure; 210, clamping arm; 211, vertical arm; 211a, upper vertical arm; 211b, lower vertical arm; 212, horizontal arm; 213, fitting part; 214, support part; 215, hinge point; 220, elastic fitting structure; 221, elastic body; 222, spring; 230, first elastic pressing part; 300, heating film; 401, first temperature sensor; 402, second temperature sensor; 403, third temperature sensor; 500, control module; 900, baby bottle. Detailed Implementation

[0027] To make this utility model clearer, the heating structure, temperature measuring structure, and bottle warmer of this utility model are further described below with reference to the accompanying drawings. The specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0028] like Figures 1 to 3 As shown, a heating structure for a bottle warmer includes a base 100, which is cylindrical with a concave cylindrical receiving space at its center for holding a baby bottle 900 to be heated. A clamping structure 200 for fixing and supporting the bottle is provided within this receiving space. The clamping structure 200 includes at least two L-shaped clamping arms 210, which are arranged opposite to each other to provide opposing clamping forces. In this embodiment, considering the need to improve the stability of the bottle clamping and fixing, three clamping arms 210 are used as an example. The clamping arms 210 are evenly distributed around the center circumference of the base 100. Each clamping arm 210 includes a vertical arm 211 and a connected horizontal arm 212. The vertical arm 211 is located above the horizontal arm 212. A hinge point 215 is set near the area where the horizontal and vertical arms are connected. This hinge point cooperates with the hinge part 101 set in the accommodating space of the base 100. The hinge part 101 is in the form of a hinge seat. In the figure, the hinge seat 102 uses a shaft + hole cooperation method to realize the hinge cooperation between the clamping arm 210 and the hinge part 101. Under the action of external force, the clamping arm 210 can rotate relative to the hinge part (due to spatial constraints, it is actually a swinging effect).

[0029] Specifically, the top of the vertical arm 211 has a fitting portion 213 with a certain area. A heating film 300 is disposed on its inner side. The heating film 300 is a flexible film, for example, and can be a PI heating film made of a thin-film insulating material, which is existing technology. The heating surface of this heating film can be attached to the side surface of the bottle. The free end of the horizontal arm 212 has a support portion 214 with a certain supporting surface for supporting and contacting the bottom of the bottle. When a bottle containing a certain amount of milk is placed in the clamping structure 200, the bottom of the bottle contacts the support portion of the horizontal arm 212. Under the weight of the bottle, the clamping arm 210 swings relative to the hinge point 215, and the vertical arm 211 tilts inward (towards the bottle side) to press the heating film 300 tightly against the side wall of the bottle. The heat generated by the heating film 300 is directly conducted to the milk through the side wall of the bottle to achieve the purpose of heating and warming the milk. Here, to improve heating efficiency, the heating film 300 can have its heating contact area increased, taking into account cost and actual installation space, to cover a larger variation in the amount of milk stored in the bottle. Correspondingly, the number of pairs of clamping arms 210 can also be appropriately increased.

[0030] In actual use, when there is a large difference between the diameter or width of the bottle (for non-circular bottles) and the opening size formed by the vertical arms 211, the heating film 300 will not fit well against the side wall of the bottle after the mechanism is clamped, resulting in a small heat conduction surface and thus affecting the warming efficiency. Therefore, an elastic fitting structure 220 is needed to improve the fitting effect.

[0031] The elastic bonding structure 220 has a certain elastic deformation capability. When the vertical arm 211 is pressed against the bottle 900, the elastic bonding structure 220 undergoes elastic deformation, increasing the fit between the heating film 300 and the bottle 900.

[0032] As a preferred option, combined Figure 3 As shown, the elastic bonding structure 220 is an elastic body 221, which constitutes part or all of the material of the vertical arm 211. The deformation direction of the elastic body 221 is towards the bonding area between the heating film 300 and the bottle. It can be a conventional high-temperature resistant rubber, silicone, or other elastic polymer material. It can be the material that makes up the bonding part along the length of the vertical arm 211 or the material of the area below the bonding part. For example, the bonding part 213 can be entirely made of an elastic body. Alternatively, as shown in the figure, the elastic body 221 can be located below the bonding part 213 and as part of the vertical arm 211, with multiple wavy protrusions to improve elastic deformation capability. This structure uses the deformation of the elastic body 221 itself to better bond the heating film 300 to the side wall of the bottle. Of course, considering processability, the vertical arm 211 can also be entirely composed of an elastic body, and its shape should be designed to easily undergo elastic deformation while having a certain degree of rigidity.

[0033] As another preferred embodiment, the elastic bonding structure 220 can also be as follows: Figure 4 The structure shown is such that the elastic bonding structure 220 is a spring 222, such as a spiral cylindrical spring. The vertical arm 211 includes an upper vertical arm 211a and a lower vertical arm 211b. The bonding part is located at the end of the upper vertical arm 211a. The two ends of the spring 222 are fixed to connect the upper and lower vertical arms together. In this way, the upper vertical body can change its relative position to the lower vertical arm under the action of the spring 222, so as to improve the bonding effect between the heating film 300 and the baby bottle.

[0034] Of course, the elastic bonding structure 220 with elastic deformation capability is not limited to an elastomer or a spring, but can also be other elastic deformation structures or materials, so as to achieve stable bonding between the heating film 300 and the surface of the baby bottle 900.

[0035] This embodiment also provides a temperature measuring structure for a bottle warmer, which is formed by adding other technical features to the above-mentioned heating structure. Combined with... Figure 3 , Figure 5 As shown, the temperature measuring structure also includes a first temperature sensor 401 located on the vertical arm 211 and capable of detecting the side of the bottle. The first temperature sensor 401 can detect the temperature of the milk in the heating area, and its number corresponds to the number of heating films 300. The first temperature sensor 401 is disposed on the bonding part 213, and the heating films 300 can be made to make way by opening clearance slots, holes, etc. In order to improve the detection accuracy of the first temperature sensor 401 and make the first temperature sensor 401 adhere tightly to the side wall of the bottle to reduce external environmental interference, the first temperature sensor 401 can be connected to the bonding part through a first elastic pressing part 230. For example, the first elastic pressing part 230 is a vertically elastic spring or a polymer elastomer. The first elastic pressing part 230, through the elastic change of its extension end, elastically presses the first temperature sensor 401 connected to its extension end against the side wall of the bottle.

[0036] The bottom of the housing 100 is also equipped with a second temperature sensor 402 for detecting the temperature of the bottom of the bottle. The second temperature sensor 402 detects the temperature of the milk inside the bottle by measuring the temperature of the bottom of the bottle. There can be multiple second temperature sensors 402, and the arithmetic average of the measured temperature data can be used to more accurately measure the actual temperature of the milk in the bottle. Furthermore, the second temperature sensor 402 can also be connected to the housing 100 via a second elastic pressing part 103 to improve the fit between the second temperature sensor 402 and the bottom of the bottle, thereby improving the temperature detection accuracy. Of course, the first and second elastic pressing parts are not limited to vertically elastic springs or polymer elastomers, but can also be other forms of elastic deformation mechanisms.

[0037] In addition, a third temperature sensor 403 is provided in each heating film 300 to measure the heating surface temperature of the corresponding heating film 300. There are already commercially available structures that integrate the temperature sensor with the PI heating film, which will not be elaborated upon here. The first, second, and third temperature sensors, as well as the heating films 300, are all electrically connected to the control module 500 via wires. The control module 500 stores a control program with an algorithm in its storage medium. The control program, through its internal algorithm, obtains a relatively accurate temperature of the baby bottle and milk. The third temperature sensor is mainly used to compensate for and calibrate the actual heating temperature of the PI heating film, further improving the accuracy of the heating source's temperature and providing a foundation for subsequent milk temperature control.

[0038] This embodiment also provides a temperature control method for a bottle warmer, which improves the accuracy of milk temperature control based on the above-mentioned temperature measuring structure.

[0039] The first temperature sensor 401 detects the temperature at the surface in contact with the side wall of the bottle; the second temperature sensor 402 detects the temperature of the milk in the bottom of the bottle.

[0040] The control module control program includes a set of preset temperature ranges arranged sequentially from low to high temperature and having a certain temperature range, as well as a set of warming milk temperature values ​​T for the user to select. These warming milk temperature values ​​T are located within the aforementioned preset temperature ranges.

[0041] The control module's control program also presets multiple sets of heating parameters T0, each corresponding one-to-one with multiple preset parameters for baby bottle models within the control module. The value of the heating parameter T0 changes inversely with the power of the heating film. Specifically, the larger the difference between the warm milk temperature value T and the preset temperature range, the larger the value of the heating parameter T0, and the greater the difference between the temperature detected by the first temperature sensor 401 and the warm milk temperature value T. Conversely, the smaller the difference between the warm milk temperature value T and the preset temperature range, the smaller the value of the heating parameter T0, and the smaller the difference between the temperature detected by the first temperature sensor 401 and the warm milk temperature value T. When the warm milk temperature value T is within the preset temperature range corresponding to the milk, the heating parameter T0 is at its minimum, and the temperature detected by the first temperature sensor 401 is equal to or slightly lower than the warm milk temperature value T.

[0042] Combination Figure 6 As shown, the method includes:

[0043] S1. Turn on the bottle warmer. The user selects a specific bottle warming temperature from the group of bottle warming temperature values ​​T.

[0044] S2. When the second temperature sensor 402 detects that the temperature of the milk in the bottle is lower than the warming temperature value set by the user, the heating film 300 heats the bottle with a preset power and obtains the actual temperature rise parameters of the bottle within a predetermined time. The actual temperature rise parameters here include the heating time and the temperature difference within the set time.

[0045] S3, the control module 500 compares the actual heating parameters with the heating parameter thresholds of the pre-stored baby bottle models, and selects the corresponding baby bottle model.

[0046] S4. The control module 500 selects the preset temperature range of the corresponding group according to the temperature parameter detected by the second temperature sensor 402, selects the corresponding heating parameter T0 according to the corresponding baby bottle model, and adjusts the heating film 300 to the corresponding power for heating by heating parameter T0.

[0047] S5. Repeat step S4 until the second temperature sensor 402 detects that the temperature of the milk in the bottle is equal to the user-set temperature value. Then the heating film 300 stops working and the milk warming is finished.

[0048] For specific examples:

[0049] The control module includes a set of preset temperature ranges and a milk warming temperature value T for user selection. These preset temperature ranges are: First temperature range (0℃-20℃, excluding 0℃), Second temperature range (20℃-35℃, excluding 20℃), Third temperature range (35℃-37℃, excluding 35℃), Fourth temperature range (37℃-38℃, excluding 37℃), Fifth temperature range (38℃-39℃, excluding 38℃), Sixth temperature range (39℃-40℃, excluding 39℃), Seventh temperature range (40℃-41℃, excluding 40℃), Eighth temperature range (41℃-42℃, excluding 41℃), Ninth temperature range (42℃-43℃, excluding 42℃), Tenth temperature range (43℃-44℃, excluding 43℃), and Eleventh temperature range (44℃-45℃, excluding 44℃).

[0050] The warming temperature value T for this group of milk is an integer value between 37℃ and 45℃, including both ends.

[0051] The control module 500 also has multiple preset parameters for baby bottle models and multiple sets of corresponding heating parameters T0.

[0052] The parameters of the baby bottle model include the bottle material, bottle wall thickness, milk volume, and temperature reading interval. These parameters were obtained through experiments and are detailed in the table below:

[0053]

[0054] In the table: △T represents the temperature difference of the milk in the bottle detected by the second temperature sensor 402, △t represents the interval time, and t represents the temperature reading time.

[0055] Multiple sets of heating parameters T0 are preset in the control module 500, each corresponding to a preset set of parameters for multiple baby bottle models. In this embodiment, baby bottle model A1 is used as an example. The heating parameter T0 satisfies the relationship in Table 2, which is the relationship corresponding to the difference between the above-mentioned warm milk temperature value T and the extreme value of the preset temperature range.

[0056]

[0057] In the table: α1 to α10 and β represent multiplication coefficients, where the values ​​of α1 to α10 decrease sequentially, and β has the smallest value. Their specific values ​​can be set to satisfy the condition that the value of the final heating parameter T0 is positively correlated with the power of the heating film. The larger the temperature value (temperature at the point where the heating film is attached) detected by the first temperature sensor 401 is higher than the milk warming temperature value T, the smaller the value is, and vice versa. The heating parameter T0 corresponding to the β multiplication coefficient is the smallest, and the temperature value detected by the first temperature sensor 401 is equal to or slightly lower than the milk warming temperature value T.

[0058] In one embodiment, the temperature control method of the bottle warmer is as follows:

[0059] First, place a 2mm thick PP plastic bottle containing 120ml of milk into the receiving cavity of the bottle warmer base 100, fix the bottle with the clamping structure 200, turn on the bottle warmer, and set the milk warming temperature to 38℃ and the ambient temperature (milk temperature) to 22℃.

[0060] Secondly, the second temperature sensor 402 detects that the milk temperature in the bottle is 22°C, which is lower than the user-set temperature value of 38°C and collects the temperature value parameter of the milk. The heating film 300 is then activated and heated at a predetermined constant power for a predetermined time (25s). The first temperature sensor 401 detects the milk temperature at 2s intervals to obtain the actual temperature rise parameter of the milk in the bottle.

[0061] By comparing the actual heating parameters with the heating rate thresholds of different pre-stored baby bottle models (Table 1), it was determined that it is baby bottle model A1 with a capacity of 120ml, material of PP / PPSU, and wall thickness of 2mm.

[0062] Secondly, the control module 500 selects the corresponding second preset temperature range based on the temperature parameters detected by the second temperature sensor 402 (since the ambient temperature is higher than 20℃, the first preset temperature range is skipped directly), selects the corresponding heating parameter T0 (Table 2) based on the corresponding baby bottle model A1, and adjusts the heating film 300 to the corresponding power for heating through the heating parameter T0. Here, the temperature at the bonding point of the heating film is 50℃ in the second preset temperature range.

[0063] As the heating film 300 operates, the second temperature sensor 402 detects a temperature increase. Based on the feedback information from the second temperature sensor 402, the control module selects the corresponding third preset temperature range and the corresponding heating parameter T0, and adjusts the heating film 300 to the corresponding power for heating. Here, the temperature at the point where the heating film is attached is 45°C.

[0064] Next, the control module selects the corresponding fourth preset temperature range and the corresponding heating parameter T0 based on the feedback information from the second temperature sensor 402, and adjusts the heating film 300 to the corresponding power for heating. Here, the temperature at the point where the heating film is attached is 38℃. Of course, to further reduce the influence of residual heat, the internal program can be modified to adjust the temperature at the point where the heating film is attached to be slightly lower than the set milk warming temperature, generally not exceeding 0.5℃. In this example, the temperature can also be set to 37.8℃.

[0065] Finally, when the second temperature sensor 402 detects that the milk temperature in the bottle is 38°C, which is equal to the user-set temperature value, the heating film 300 stops working, the milk warming ends, the bottle warmer indicates that the milk warming is finished, and the user removes the bottle.

[0066] During this process, the actual milk temperature profile in the bottle... Figure 7 As shown, by Figure 7 As can be seen, initially, the heating film 300 heats with a predetermined preset power and acquires the actual temperature rise parameters of the bottle within a predetermined time to determine the bottle model parameters; subsequently, within the second preset temperature range, the heating film 300 heats with the maximum power, resulting in the fastest milk temperature rise rate; then, within the third preset temperature range, the heating film 300 heats with a relatively high power, resulting in a slower milk temperature rise rate compared to the first preset temperature range; finally, within the fourth preset temperature range, the heating film 300 heats with a relatively low power, resulting in a slower milk temperature rise rate compared to the second preset temperature range.

[0067] The above-mentioned temperature control method has the following advantages:

[0068] 1. The heating process is divided into multiple heating stages. When the milk temperature is far below the heating target, a high-power heating method is used to quickly raise the milk temperature. When the milk temperature is close to the heating target, a low-power heating method is used to slowly raise the milk temperature. This can reduce the residual heat interference of the heating film and temperature conduction components in the later stages of heating and improve the accuracy of the actual milk temperature.

[0069] 2. This temperature control method ensures that the temperature of the heating film surface is always higher than the liquid temperature within a certain controllable range, which can better protect the milk quality and prevent damage to its nutrients.

[0070] The above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A heating structure for a bottle warmer, comprising a base (100) having a space for holding a baby bottle (900), characterized in that: The seat (100) has a clamping structure (200) in its accommodating space. The clamping structure (200) includes at least two L-shaped clamping arms (210) arranged opposite each other. Each clamping arm (210) has a vertical arm (211) and a connected horizontal arm (212). The vertical arm (211) has a heating film (300) on its inner side. Each clamping arm (210) is hinged to a fixed hinge part (101). The clamping arm (210) can swing relative to the hinge point (215). When the horizontal arm (212) on the lower side of the clamping arm (210) is subjected to a downward force generated by the weight of the bottle (900), the vertical arm (211) on the upper side of the clamping arm (210) tilts inward to press the heating film (300) against the bottle (900). The heating film (300) transfers heat to the liquid in the bottle through heat conduction.

2. The heating structure of a bottle warmer according to claim 1, characterized in that: The vertical arm (211) has an elastic fitting structure (220). When the vertical arm (211) is pressed against the bottle (900), the elastic fitting structure (220) undergoes elastic deformation, which improves the fit between the heating film (300) and the bottle (900).

3. The heating structure of a bottle warmer according to claim 2, characterized in that: The elastic bonding structure (220) is an elastic body (221) of part or all of the material constituting the vertical arm (211), and the deformation direction of the elastic body (221) is toward the bonding area between the heating film (300) and the baby bottle (900).

4. The heating structure of a bottle warmer according to claim 2, characterized in that: The elastic bonding structure (220) is a spring (222), the vertical arm (211) includes an upper vertical arm (211a) and a lower vertical arm (211b), the heating film (300) is located on the upper vertical arm (211a), and the two ends of the spring (222) connect the upper and lower vertical arms together.

5. A temperature measuring structure for a bottle warmer, comprising the heating structure of a bottle warmer as described in claim 2, characterized in that: It also includes a first temperature sensor (401) located on the vertical arm (211) and capable of detecting the side of the bottle, and a second temperature sensor (402) capable of detecting the temperature of the bottom of the bottle is also provided at the bottom of the space containing the seat (100). The first and second temperature sensors are electrically connected to the control module (500).

6. The temperature measuring structure of a bottle warmer according to claim 5, characterized in that: The first temperature sensor (401) is connected to the vertical arm (211) through the first elastic pressing part (230), so that the detection end of the first temperature sensor (401) is elastically pressed against the side wall of the bottle; the second temperature sensor (402) is connected to the base (100) through the second elastic pressing part (103), so that the detection end of the second temperature sensor (402) is elastically pressed against the bottom of the bottle.

7. The temperature measuring structure of a bottle warmer according to claim 6, characterized in that: The heating film (300) is also provided with a third temperature sensor (403) for detecting the temperature of the heating surface of the heating film (300), and the third temperature sensor (403) is electrically connected to the control module (500).

8. A bottle warmer, characterized in that: It includes a heating structure for a bottle warmer as described in any one of claims 1 to 4 and a temperature measuring structure for a bottle warmer as described in any one of claims 5 to 7.

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