Bottle warmer

Abstract

The bottle warmer uses a water bath for heating. The regulating element is used to set the thermostat setpoint for controlling the water bath and the timing value for the mechanical timer. An alarm is generated when the timing value has elapsed.

Description

Technical Field

[0001] The present invention relates to a bottle warmer, for example for warming milk fed to a baby. Background Art

[0002] A bottle warmer is used to quickly heat milk to a temperature within a preferred temperature range, for example between 30 and 42 degrees (Celsius), more preferably between 35 and 39 degrees.

[0003] Some existing bottle warmers are based on the so-called "bain-marie" principle, for example. According to this principle, the milk is heated by placing the milk bottle in water that is heated via a heating element at the bottom of the bottle warmer. One of the basic advantages of the bain-marie system is that the heating of the milk is relatively uniform, i.e., there is only a small temperature gradient in the milk.

[0004] In one example of a bottle warmer available on the market of this type, the water bath temperature is controlled to a constant value, but the value set by the user is between 70 and 92 degrees. This has the advantage that the heating of the milk is very rapid, but the disadvantage is that when the milk is not removed quickly enough, the milk may quickly overheat because the heating of the milk will continue until the milk reaches the water bath temperature.

[0005] Overheating of the milk is very undesirable because it has the risk of scalding the baby, takes time to cool down, and valuable nutrients in breast milk are destroyed when the milk temperature becomes too high.

[0006] It is known to provide control by controlling the water temperature to prevent the milk temperature from becoming too high. The disadvantage of this method is that the heating of the milk may be very slow, and thus it takes a long time to heat the milk.

[0007] It is desirable to provide a signal or implement a timer to indicate when the milk is ready. However, this is not straightforward because the heating time of the bottle is a function of many parameters, such as the initial milk temperature, the milk volume, and the water bath temperature. For example, heating a full bottle at refrigerator temperature takes longer than heating a half-full bottle at room temperature. Therefore, a timer for a single duration is not suitable because when it is based on the largest bottle from the refrigerator, it will give milk that is too hot, or when it is based on the smallest bottle, it will give milk that is too cold.

[0008] The user can know the expected heating time in different usage scenarios, and then they can set an appropriate timer. However, this requires user input and also requires the user to set the timer or carefully monitor the time, which may not be easy when taking care of a baby at the same time.

[0009] Therefore, there is a need for a simple and user-friendly way to determine and indicate when the bottle has been warmed to the desired temperature without unduly slowing down the heating process or complicating the user's interaction with the bottle warmer. Summary of the Invention

[0010] The present invention is defined by the claims.

[0011] According to an example of one aspect of the present invention, there is provided a bottle warmer including:

[0012] A container configured to receive a bottle to be warmed and to receive water for surrounding and heating the bottle;

[0013] A heater configured to heat the water and thereby heat the bottle;

[0014] A thermostat configured to switch at a set temperature and thereby control the heater according to the thermostat;

[0015] An adjustment element configured to be displaced from a starting position to a desired heating set position based at least on volume information about the contents of the bottle,

[0016] wherein the adjustment element is coupled to the thermostat for setting the thermostat set temperature, and wherein the bottle warmer further includes:

[0017] A mechanical timer having a timing value set by the position of the adjustment element; and

[0018] An alarm configured to provide an output when the timing value has elapsed.

[0019] When the bottle is ready, i.e., when the milk has reached the desired temperature range, the bottle warmer provides an alarm. By combining a mechanical timer with an existing adjustment element (e.g., an adjustment knob), the timer function is integrated into the water temperature control. In this way, the function remains simple for the user; they simply actuate the adjustment element to the desired heating setting and then the timer value is automatically set according to the setting.

[0020] The present invention is based on the recognition that it is possible to correlate the heating time with the heating temperature such that both are controlled consistently to provide the required heating. The user is warned when the milk is ready and the user can remove the bottle at the right moment and the milk can be prevented from being too hot or too cold without having to closely monitor the time.

[0021] Sharing of components limits the additional cost of implementing the timer function and creating a simple user interface. This arrangement also ensures that heating will start at the same time as the timer starts counting down.

[0022] The bottle warmer can be adapted to turn off the heater when an alarm output is provided. For example, the generation of an alarm can also operate a switch, which indicates that the heating time is completed. In this way, overheating is prevented. Of course, if the user wants the milk to be hotter, they can heat for an additional time.

[0023] The mechanical timer includes, for example, a return mechanism for returning the adjusting element to the starting position, and wherein, when the adjusting element has returned to the starting position, the alarm is used to provide an output. Thus, the timer is a mechanical countdown timer having an initial time set by the position of the adjusting element.

[0024] In this case, preferably there is a mechanism for holding the thermostat setting at the initial set value such that the thermostat setting does not change over time when the adjusting element returns to the starting position.

[0025] The return mechanism includes, for example, a mechanical spring system.

[0026] The thermostat includes, for example, a bimetallic switch. The position of the adjusting element sets the bias of the bimetallic switch such that the switch triggers at a temperature depending on the position of the adjusting element.

[0027] The alarm can include an audible output device (such as a bell or buzzer) and / or a visual output device (such as an LED output).

[0028] The bottle warmer preferably includes a set of visual heating setting indicators along the adjusting element, where each heating setting indicator includes an indication of a volume amount.

[0029] Thus, the user simply notes the volume of the milk to be heated and moves the adjusting element to a suitable position, which sets the water temperature and time.

[0030] The visual heating setting indicator can further include an indication of the initial milk temperature such that the desired heating setting input is further based on information about the initial temperature of the bottle contents. Thus, it can be more precisely ensured that the final milk temperature is within the desired temperature range for different initial milk temperatures (such as refrigerator temperature or room temperature).

[0031] The visual heating setting indicator can include a first scale for a first initial milk temperature and a second scale for a second initial milk temperature. Thus, instead of a single-line indicator, separate scales can be provided, for example, for room temperature and refrigerator temperature.

[0032] The visual heating setting indicator can also include an indication of the remaining heating time. Thus, for an example where the adjusting element returns to the initial position, the adjusting element position serves as a countdown timer.

[0033] For example, there is a linear correspondence between the thermostat set temperature and the timing value. Thus, there can be a linear relationship between the displacement of the regulating element and the temperature, and there can also be a linear relationship between the displacement of the regulating element and the timing value.

[0034] The regulating element includes, for example, a rotary regulating element for rotating from a starting position to a desired heating setting input. The displacement of the rotary regulating element is then the rotation angle.

[0035] These and other aspects of the invention will become apparent with reference to the embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] For a better understanding of the present invention and to more clearly show how the present invention may be implemented, reference will now be made, by way of example only, to the accompanying drawings, in which:

[0037] Figure 1 is a perspective view of a known bottle warmer;

[0038] Figure 2 is Figure 1 a cutaway perspective view of the bottle warmer of

[0039] Figure 3 is Figure 1 a cross-sectional top view of the bottle warmer of

[0040] Figure 4 shows an example of a visual indicator;

[0041] Figure 5 shows a rotary regulating element and a shaft providing rotary control of the thermostat according to an example of the present invention;

[0042] Figure 6 shows a first graph of the relationship between the milk volume (x-axis) and the set time (right y-axis) and the water bath temperature (left y-axis);

[0043] Figure 7 shows a second graph of the relationship between the milk volume (x-axis) and the set time (right y-axis) and the water bath temperature (left y-axis);

[0044] Figure 8 shows a graph of the relationship between the milk volume (x-axis) and the final milk temperature for milk initially in the refrigerator and milk initially at room temperature. DETAILED DESCRIPTION

[0045] The present invention will be described with reference to the accompanying drawings.

[0046] It should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the apparatus, systems and methods, are for illustrative purposes only and are not intended to limit the scope of the present invention. These and other features, aspects and advantages of the apparatus, systems and methods of the present invention will become better understood from the following description, the appended claims and the drawings. It should be understood that the drawings are merely schematic and are not drawn to scale. It should also be understood that the same reference numerals are used throughout the drawings to denote the same or similar components.

[0047] The present invention provides a bottle warmer that uses water bath heating. An adjustment element, such as a control knob, is used to set the thermostat set temperature for controlling the water bath and the timing value for a mechanical timer. An alarm is generated when the elapsed time value has passed.

[0048] Before describing the present invention, the design of a known bottle warmer to which the present invention can be applied will be described.

[0049] Referring Figures 1 to 3 , a known bottle warmer 1 is shown. The bottle warmer includes a housing 2 and a thermostat 3. The housing defines a container for receiving the bottle to be warmed and for receiving water to surround and heat the bottle. The thermostat 3 is mounted within the housing 2 and includes a rotatable rotary input 4 for adjusting the temperature of the bottle warmer 1. The bottle warmer has a heater 10 that is controlled using feedback from the thermostat 3.

[0050] The housing 2 of the bottle warmer 1 includes a first housing portion 5 and a second housing portion 6. A first semi-circular wall portion 5A extends from the outer surface of the first housing portion 5, and a second semi-circular wall portion 6A extends from the outer surface of the second housing portion 6. The first housing portion 5 and the second housing portion 6 are joined together to form the housing 2 such that the first semi-circular wall portion 5A and the second semi-circular wall portion 6A meet to form a circular wall portion 2A.

[0051] The first housing portion 5 includes an inner wall 7 having a semi-circular recess 7A. The second housing portion 6 includes an inner wall (not shown) having a semi-circular recess (not shown) that aligns with the semi-circular recess 7A of the inner wall 7 of the first housing portion 5 when the first housing portion 5 and the second housing portion 6 are joined together to form a circular hole (not shown).

[0052] The thermostat 3 includes a control mechanism 1A that is actuated by a rotary adjustment element 8 via a shaft 9 coupled to the rotary input 4 of the thermostat 3.

[0053] Before the first housing part 5 and the second housing part 6 are joined together, the thermostat 3 is mounted inside the first housing part 5 on a support (not shown). The thermostat 3 includes a base 3A having a holding plate 3B and a control plate 3C extending therefrom. A spiral actuator 4A is rotatably mounted on the holding plate 3B and is pressed against the control plate 3C to apply a bending force thereto. The magnitude of the bending force applied to the control plate 3C controls the temperature of the bottle warmer 1.

[0054] In particular, the thermostat includes a bimetal strip 3D. The bending of the bimetal strip causes a pair of electrical contacts 3E to close, which provides for the connection or interruption of the power supply to the heater 10.

[0055] Thus, a low-cost electromechanical heater control system is achieved.

[0056] The spiral actuator 4A is coupled to a rotary input member 4 such that when the rotary input member 4 rotates, the spiral actuator 4A also rotates and thus moves axially towards or away from the control plate 3C depending on the direction of rotation of the rotary input member 4, thereby changing the bending force applied to the control plate 3C and thus changing the temperature of the bottle warmer 1. Generally, the spiral actuator 4A biases the thermostat.

[0057] Other arrangements for rotatably setting the thermostat are of course possible and this is merely a known example.

[0058] Thus, the temperature of the bottle warmer 1 can be adjusted by rotating the rotary adjustment element 8 which is rotatably coupled to the rotary input member 4 via a shaft 9. Each angular position of the rotary adjustment element 8 relative to the housing 2 represents a different temperature of the bottle warmer 1. The relationship between the rotational position of the rotary adjustment element 8 relative to the housing 2 and the temperature of the bottle warmer 1 is graphically indicated to the user by the alignment of a notch (not shown) on the rotary adjustment element 8 with a visual indicator 2B provided on the housing 2 around a circular wall portion 2A.

[0059] Figure 4 An example of the visual indicator 2B is shown. It includes a set of indicators starting at an initial position P1 and providing a series of additional set positions P2 to P6.

[0060] For example:

[0061] P1 is the starting (off) position with no heating;

[0062] P2 is the defrost setting;

[0063] P3 is the keep warm setting;

[0064] P4 is for heating bottles less than half full (<180 ml) and for a water bath temperature of 70 °C.

[0065] P5 is used for food warming.

[0066] P6 is used for bottles that are more than half full (> 180 ml) and for a water bath temperature of 92 °C.

[0067] P2 to P6 are the desired heating set positions.

[0068] The water bath temperature gradually increases from P1 to P6.

[0069] However, the required heating time depends on, for example, the initial milk temperature and not only on the milk volume.

[0070] The present invention is based on the recognition that the timing value can be set by the same rotary adjustment element (i.e., a rotary input knob or dial). Thus, a longer time can be associated with a higher water bath temperature, and although a correlation is created between time and temperature (thus eliminating the freedom to choose the duration), a suitable setting can be obtained for all desired combinations of milk volume and initial milk temperature.

[0071] Figure 5 The rotary adjustment element 8 and the shaft 9 providing rotary control of the thermostat are shown.

[0072] A mechanical timer 20 is provided, which has a timing value set by the position of the rotary adjustment element 8. The rotary adjustment element, for example, has teeth 22 that drive the mechanical timer. When the timed value has elapsed, an alarm provides an output. Thus, the mechanical timer counts down from the set timing value and then emits an alarm. Mechanical timers are well known, such as egg timers. Typically, they operate with a mechanical spring system.

[0073] In one example, the mechanical timer rotates as it counts down, but this rotation is separate from the rotary adjustment element 8. A ratchet system can be used for this purpose, such that a clockwise rotation of the rotary adjustment element advances the timer (counterclockwise in the example shown), but the return of the mechanical timer is separate from the rotary adjustment element 8, and the element 8 thus maintains the set thermostat temperature.

[0074] In another example, the mechanical timer is directly driven by the rotary adjustment element 8, such that when the timer counts down, the element itself rotates back (counterclockwise). In this case, the thermostat setting needs to be fixed. This can also be achieved by a ratchet system. Thus, a clockwise rotation of the rotary adjustment element is coupled to the thermostat, but the return rotation is separate from the thermostat, and the thermostat thus maintains the set thermostat temperature. Then, when the timer reaches the end of the countdown, the thermostat will be reset to its starting position. For example, position P1 can be associated with the reset of the thermostat setting.

[0075] When the bottle is ready, i.e., when the milk has reached the desired temperature range, the bottle warmer provides an alarm. The alarm can include an audible output device (such as a bell or buzzer) and / or a visual output device (such as an LED output). By combining a mechanical timer with the existing rotary adjustment element, the timer function is integrated into the water temperature control. In this way, the function remains simple for the user; they simply rotate the rotary adjustment element to the desired heating setting, and then the timer value is automatically set according to this setting.

[0076] When an alarm output is provided, the bottle warmer can turn off the heater. For example, the heater off function can be associated with position P1. There can be a switch triggered by the rotary adjustment element when it reaches position P1.

[0077] The bottle warmer also has a visual indicator having a set of visual heating setting indicators around the rotary adjustment element, where each heating setting indicator includes at least an indication of the volume amount.

[0078] For example, the indicators can represent different volumes:

[0079] 60ml

[0080] 125ml

[0081] 180ml

[0082] 260ml

[0083] 330ml

[0084] Thus, the user simply notes the volume of the milk to be heated and rotates the rotary adjustment element to the appropriate position, which sets the water temperature and time.

[0085] The visual heating setting indicators can further provide information about the water temperature set thereby (all degrees are in Celsius):

[0086] 60ml, 70 degrees

[0087] 125ml, 75.3 degrees

[0088] 180ml, 79.8 degrees

[0089] 260ml, 86.3 degrees

[0090] 330ml, 92 degrees

[0091] The visual heating setting indicator may further include an indication of the initial milk temperature, such that the desired heating setting input is further based on information about the initial temperature of the bottle contents. Thus, for different initial milk temperatures (e.g., refrigerator temperature or room temperature, F = refrigerator temperature, R = room temperature), the final milk temperature can be more precisely ensured to be within the desired temperature range:

[0092] 60ml, R

[0093] 60ml, F

[0094] 125ml, R

[0095] 125ml, F

[0096] 180ml, R

[0097] 180ml, F

[0098] 260ml, R

[0099] 260ml, F

[0100] 330ml, R

[0101] 330ml, F

[0102] The visual heating setting indicator may include a first scale for a first initial milk temperature (e.g., room) and a second scale for a second initial milk temperature (e.g., refrigerator). Thus, instead of an indicator ring represented by the above list, respective scales can be provided for room temperature and refrigerator temperature, for example. These can form two concentric rings around the rotary adjustment element. They can then overlap in a more intuitive way (e.g., 180ml at refrigerator temperature can be a higher temperature setting than 250ml at room temperature).

[0103] The visual heating setting indicator may further include an indication of the remaining heating time. Thus, for an example where the rotary adjustment element returns to the initial position, the rotary adjustment element position serves as a countdown timer:

[0104] 60ml, 160s

[0105] 125ml, 200s

[0106] 180ml, 250s

[0107] 260ml, 305s

[0108] 330ml, 345s

[0109] These different options can be combined in different ways.

[0110] In the most basic implementation, the visual heating setting indicator only indicates volume and is thus independent of the initial milk temperature. Since the starting temperatures of the milk are different, the milk temperatures are still different at the end of this period. However, by selecting appropriate time and temperature settings, it is possible to ensure that the milk is within an acceptable final temperature range.

[0111] Table 1 shows the times for heating milk to different specified final temperatures (32, 34, 37, 40 degrees) and the model for the times required for different milk volumes and starting temperatures and different bottles. Then the appropriate set times are shown.

[0112] Table 1

[0113]

[0114] Note that 1 Oz = 28.4 ml.

[0115] Model calculations show that for the main bottle types, when a single time setting is applied to a given milk volume, the temperature of the milk, including all tolerances (e.g., bottle wall variations), is between 32 and 40 °C. For example, for a volume of 125 ml, a time of 230 seconds will result in milk at room temperature just below 40 degrees and milk at refrigerator temperature just below 34 degrees.

[0116] Therefore, there is a difference in the optimal times when the milk is at room temperature or refrigerator temperature. As a result, for a fixed set time, milk at room temperature will typically reach 39 to 40 degrees, while milk starting at refrigerator temperature will typically reach about 34 degrees.

[0117] Figure 6 A graph showing the relationship between milk volume (x - axis) and set time (right y - axis) and water bath temperature (left y - axis) is shown.

[0118] Curve 60 represents the set time and curve 62 represents the water bath temperature.

[0119] It can be seen that the time increases almost linearly with milk volume, as shown by curve 64. This enables the implementation of a simple mechanical timer principle (which counts down at a constant rate).

[0120] When all tolerances of the bottle, especially the bottle wall thickness, are included, there is more variation. Table 2 gives the temperature variations for 95% of the population. Note that for simplicity, the variations in bottle wall thickness are translated into variations in heating time.

[0121] Table 2

[0122]

[0123] In Table 1, the results relate to bottles where all the important parameters affecting temperature exactly match the average values.

[0124] However, the standard deviation of the time to reach 37 degrees is typically about 17 seconds for a 4-ounce bottle and 13 to 15 seconds for 9- to 11-ounce bottles. This is due to the fact that for a 4-ounce bottle, there is a greater distribution of wall thickness. To have 95% of the population meet the requirement, we can have a distribution of 2 standard deviations. Thus, a timing distribution of 26 to 34 seconds is acceptable.

[0125] The impact of these tolerances can be calculated in a simple manner. For example, take a 60 ml, 4-ounce bottle. Table 1 shows that the set time in this case is 180 seconds. The average case with an initial milk temperature of 20 degrees will reach a temperature close to 39 degrees (37 degrees takes 162 seconds, 40 degrees takes 187 seconds), while an initial milk temperature of 5 degrees will reach a temperature close to 34 degrees (34 degrees takes 182 seconds).

[0126] In this case, the standard deviation of the time to reach 37 degrees is approximately 17 seconds, so 95% of the population will have a time of ±35 seconds.

[0127] For a set time of 180 s, the impact of the tolerances is reflected in a heating time range of 145 to 215 seconds. For a milk temperature of 20 degrees, the risk is that the bottle is too hot. So for this case, the maximum temperature is calculated for an average heating time of 215 seconds in Table 2, resulting in a milk temperature of 43 degrees. Physically, this case is reflected in a bottle with a thin wall, more heating power, etc.

[0128] Note that for this case (i.e., a thick-walled bottle, less heating power), a heating time of 145 seconds will not pose a problem as the temperature will be within an acceptable range.

[0129] For milk starting at refrigerator temperature, the current risk is that the bottle is too cold. Thus, the lowest final milk temperature for an average heating time of 145 seconds has been calculated, resulting in a final milk temperature of 28 °C.

[0130] Therefore, Table 2 can be considered representative of the worst-case scenario within 2 standard deviations. The final temperature range is now 28 to 43 degrees.

[0131] This shows that it is preferable to have a separation between room-temperature milk and refrigerator-temperature milk. This explains why the visual indicator preferably indicates different volumes as well as the starting temperature, as in some of the examples above.

[0132] As Figure 7 shown, there is still a very linear relationship between the milk volume, the water bath temperature, and the time required by the timer.

[0133] Figure 7A graph showing the relationship between milk volume (x-axis) and set time (right y-axis) and water bath temperature (left y-axis) is presented. These are for milk at room temperature.

[0134] Curve 70 represents the set time and curve 72 represents the water bath temperature.

[0135] In Figure 6 the set time and water bath temperature as a function of the milk volume in the bottle are given, as used in Table 1. Here, an approximately linear relationship can be seen for both the set time and the water bath temperature.

[0136] In Figure 7 the aim is to find the average refrigerator temperature and the milk temperature at average room temperature, close to 37 degrees. Thus, the temperature of 95% of the population is within the acceptable range of 34 to 40 degrees.

[0137] Figure 7 The required settings for the average case starting from room temperature are given. A linear relationship between the water bath temperature and the set time can be seen.

[0138] Figure 8 Shows the initial room temperature (curve in region 82) and the final temperature of the refrigerator temperature (curve in region 80).

[0139] Since the average value for both cases is now close to 37 degrees, the tolerance can be handled in a better way.

[0140] The largest temperature difference will be for a milk volume of 330 ml at room temperature and a milk volume of 260 ml at refrigerator temperature (both require a set time of 345 seconds). This can be improved by using a slightly smaller milk volume to increase the milk temperature, the drawback being that the user interface may be slightly more complex.

[0141] The set time is designed to give a warning signal when the milk temperature for the average case is close to 37 degrees. Since some time elapses between the warning signal and the moment the milk is taken out, it may be beneficial to have a slightly shorter time. Typically, when the milk temperature is close to 37 degrees, the temperature increases by approximately 1 degree every 10 seconds.

[0142] By providing different inputs for different initial milk temperatures, the tolerance of the bottle can be adjusted as described above. Calculating the influence of the bottle wall tolerance results in 95% of the simulated cases obtaining a milk temperature between 32 and 40 degrees.

[0143] The adjusting element in the above example includes a rotary adjusting element for rotating from a starting position to a desired heating set input. It is then a rotary control knob.

[0144] However, other regulating elements can also be used, such as sliders or levers. The sliders or levers then control the thermostat setting and the time value for setting the countdown timer in the same way as described above.

[0145] By studying the drawings, the disclosure and the appended claims, those skilled in the art can understand and realize variations of the disclosed embodiments when implementing the claimed invention. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality.

[0146] The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0147] If the term "adapted to" is used in the claims or the specification, it should be noted that the term "adapted to" is intended to be equivalent to the term "configured to".

[0148] Any reference signs in the claims should not be construed as limiting the scope.

Claims

1. A bottle warmer, comprising: A container (2) for receiving a bottle to be warmed and for receiving water to surround and heat the bottle; A heater (10) for heating the water and thereby heating the bottle; A thermostat (3) for switching at a set temperature to control the heater according to the thermostat; An adjusting element (8) for shifting from a starting position to a desired heating setting input based at least on volume information about the contents of the bottle; Wherein the adjusting element is coupled to the thermostat to set the thermostat set temperature, and wherein the bottle warmer further comprises: A mechanical timer (20) having a timing value set by the position of the adjusting element; And An alarm for providing an output when the timing value has elapsed.

2. The bottle warmer according to claim 1, adapted to turn off the heater when an alarm output is provided.

3. The bottle warmer according to claim 1 or 2, wherein the mechanical timer includes a return mechanism for returning the adjusting element to the starting position, and wherein, The alarm is for providing an output when the adjusting element has returned to the starting position.

4. The bottle warmer according to claim 3, wherein the return mechanism comprises a mechanical spring system.

5. The bottle warmer according to claim 1 or 2, wherein the thermostat comprises a bimetallic switch.

6. The bottle warmer according to claim 1 or 2, wherein the alarm comprises: An audible output device; And / or A visual output device.

7. The bottle warmer according to claim 1, comprising a set of visual heating setting indicators along the adjusting element, wherein each heating setting indicator includes an indication of a volume amount.

8. The bottle warmer according to claim 7, wherein the visual heating setting indicator further includes an indication of an initial milk temperature such that the desired heating setting input is further based on initial temperature information about the contents of the bottle.

9. The bottle warmer according to claim 7 or 8, wherein the visual heating setting indicator includes a first scale for a first initial milk temperature and a second scale for a second initial milk temperature.

10. The bottle warmer according to claim 7 or 8, wherein the visual heating setting indicator further includes an indication of remaining heating time.

11. The bottle warmer according to claim 1 or 2, wherein there is a linear correspondence between the thermostat set temperature and the timing value.

12. The bottle warmer according to claim 1 or 2, wherein the adjusting element comprises a rotary adjusting element (8) for rotating from the starting position to the desired heating setting input.

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