Liquid heater capable of accurately measuring temperature

Abstract

The utility model discloses a liquid heater capable of accurately measuring temperature, which relates to the technical field of liquid heaters and comprises a liquid heater body, the liquid heater body is provided with a heating cavity and a liquid storage cavity, a control module, a heating element and a temperature sensing probe are arranged in the heating cavity, and the heating element and the temperature sensing probe are electrically connected with the control module. The temperature sensing end of the temperature sensing probe penetrates through the heating cavity and extends into the liquid storage cavity; the temperature sensing end of the temperature sensing probe directly extends into the liquid storage cavity and is in direct contact with the liquid, the actual temperature of the liquid can be accurately sensed, the design can avoid interference of factors such as environment temperature and local high temperature of the heating element, and the accuracy of temperature measurement is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid heaters, and particularly to a liquid heater with accurate temperature measurement. Background Technique

[0002] In daily life, liquid heaters are commonly used devices and are widely applied in various scenarios such as families and workplaces.

[0003] As a common liquid heater, a milk warmer provides great convenience for feeding infants. However, existing milk warmers often have some deficiencies in temperature measurement.

[0004] Traditional milk warmers usually install the temperature sensor in a relatively random position, such as only near the heating element or on the surface of the milk warmer housing. Such installation positions make it difficult for the temperature sensor to accurately sense the actual temperature of the milk. On the one hand, when the temperature sensor is close to the heating element, it may be affected by the local high temperature of the heating element, resulting in a measured temperature higher than the true temperature of the milk. On the other hand, if installed on the surface of the housing, due to the relatively large distance from the milk, it will be interfered by factors such as the ambient temperature and cannot timely and accurately reflect the temperature change of the milk.

[0005] Traditional milk warmers adopt relatively simple temperature measurement methods and are difficult to achieve accurate temperature measurement. This may lead to inaccurate milk warming temperatures. Too high or too low temperatures may affect the nutritional components of breast milk or infant formula and may even have an adverse impact on the health of infants. For example, some milk warmers only control the temperature by setting a fixed heating time without accurately measuring and feedback regulating the actual temperature of the milk. Such a method is easily affected by factors such as the ambient temperature and the material of the milk bottle, resulting in large temperature fluctuations during milk warming and unable to meet the strict requirements of infants for the temperature of the milk. In addition, the temperature sensing devices of some milk warmers are not sensitive enough or the position settings are unreasonable, and cannot accurately sense the actual temperature of the milk, thus affecting the use effect of the milk warmer.

[0006] To solve these problems, a liquid heater capable of accurate temperature measurement is needed to ensure that devices such as milk warmers can provide users with safer and more reliable services. Content of the Utility Model

[0007] The utility model aims to provide a technical solution to overcome the above deficiencies.

[0008] A liquid heater for precise temperature measurement, comprising a liquid heater body. The liquid heater body has a heating chamber and a liquid storage chamber. A control module, a heating element electrically connected to the control module, and a temperature sensing probe are arranged in the heating chamber. The temperature sensing end of the temperature sensing probe passes through the heating chamber and extends into the liquid storage chamber.

[0009] As a further solution of the present utility model: The liquid heater body includes a base and a connected main body. The base has the heating chamber, the main body has the liquid storage chamber, and a channel for the temperature sensing end to pass through is provided at the bottom of the main body.

[0010] As a further solution of the present utility model: A sealing ring for blocking the channel is sleeved on the temperature sensing end, and the temperature sensing end abuts against the sealing ring.

[0011] As a further solution of the present utility model: A flange portion is circumferentially and continuously extended along the temperature sensing end, and the flange portion is in abutting cooperation with the sealing ring;

[0012] Wherein, the sealing ring is within the vertical projection range of the flange portion.

[0013] As a further solution of the present utility model: A fixing member that is locked and cooperated with the lower end of the temperature sensing probe is arranged in the heating chamber, so as to abut against the outside of the main body through the fixing member, and abut against the inside of the main body in the liquid storage chamber through the flange portion, thereby realizing the fixation of the temperature sensing probe.

[0014] As a further solution of the present utility model: The connection manner between the temperature sensing probe and the fixing member, and the connection manner between the temperature sensing probe and the channel are both threaded connections.

[0015] As a further solution of the present utility model: The diameter of the hollow cavity of the sealing ring is smaller than the diameter of the channel.

[0016] As a further solution of the present utility model: The temperature sensing probe includes a housing, a thermosensitive element built in the housing, and a wire group connected to the thermosensitive element. The wire group is electrically connected to the heating element or the control module.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The temperature-sensing end of the temperature-sensing probe directly extends into the liquid storage cavity and is in direct contact with the liquid, enabling it to accurately sense the actual temperature of the liquid. This design can avoid interference from factors such as ambient temperature and local high temperature of the heating element, greatly improving the accuracy of temperature measurement. For example, in a milk warmer, it can accurately control the temperature of the milk liquid within an appropriate range, ensuring that the nutritional components of breast milk or infant formula are not damaged. At the same time, the stable temperature can ensure that the milk liquid always remains at a temperature suitable for infants to drink, neither scalding the infant's oral cavity due to excessive temperature nor affecting the infant's digestion and absorption due to too low temperature.

[0019] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0023] Figure 3 is Figure 2 an enlarged structural diagram of part A in

[0024] Figure 4 is a schematic structural diagram of the cooperation between the base and the temperature-sensing probe in the present utility model;

[0025] Figure 5 is a schematic structural diagram of the temperature-sensing probe in the present utility model.

[0026] The reference numerals and names in the drawings are as follows:

[0027] 1, liquid heater body; 2, heating cavity; 3, liquid storage cavity; 4, control module; 5, heating element; 6, temperature-sensing probe; 7, temperature-sensing end; 8, base; 9, main body; 10, channel; 11, sealing ring; 12, flange portion; 13, fixing member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1-5 , in the embodiment of the present utility model, a liquid heater for precise temperature measurement includes a liquid heater body 1. The liquid heater body 1 has a heating chamber 2 and a liquid storage chamber 3. A control module 4, a heating element 5 electrically connected to the control module 4, and a temperature sensing probe 6 are arranged in the heating chamber 2. The temperature sensing end 7 of the temperature sensing probe 6 passes through the heating chamber 2 and extends into the liquid storage chamber 3.

[0030] In the technical solution of the present utility model, the liquid heater body 1 is divided into a heating chamber 2 and a liquid storage chamber 3. The two chambers are independent of each other but closely cooperate. The heating chamber 2 provides a stable installation space for the heating element 5 and the control module 4, avoiding their direct contact with the liquid in the liquid storage chamber 3 and reducing the risk of electrical faults. The liquid storage chamber 3 is specifically used to store the liquid to be heated, and its design shape and capacity can be adjusted according to different usage requirements;

[0031] The temperature sensing end 7 of the temperature sensing probe 6 passes through the heating chamber 2 and extends into the liquid storage chamber 3. Such a design enables the temperature sensing probe 6 to directly contact the liquid to be heated, minimizing the interference of environmental factors and the local high temperature of the heating element 5 on temperature measurement. The position of the temperature sensing probe 6 is carefully designed to ensure that it can accurately reflect the average temperature of the liquid in the liquid storage chamber 3, rather than local temperature changes;

[0032] As the core of the entire liquid heater, the control module 4 is electrically connected to the heating element 5 and the temperature sensing probe 6. The temperature sensing probe 6 uses a high-precision temperature sensor, which can real-time monitor the temperature of the liquid in the liquid storage chamber 3 and transmit the temperature signal to the control module 4 in digital or analog form. After receiving the temperature signal, the control module 4 processes and analyzes the signal through the built-in intelligent algorithm. According to the preset temperature range and control strategy, the control module 4 precisely controls the working state of the heating element 5, including parameters such as heating power and heating time. When the temperature is lower than the set value, the control module 4 starts the heating element 5 for heating; when the temperature reaches the set value, the control module 4 stops the heating element 5 or adjusts it to the heat preservation mode to maintain the temperature of the liquid within a stable range;

[0033] Among them, a display module can be set on the liquid heater body 1, and the temperature of the liquid in the current liquid storage cavity 3 can be displayed through the display screen, so that the user can intuitively view the temperature of the current liquid heater;

[0034] In summary, the temperature sensing end 7 of the temperature sensing probe 6 directly extends into the liquid storage cavity 3 and is in direct contact with the liquid, enabling accurate perception of the actual temperature of the liquid. Compared with the temperature sensors in traditional warm milkers that are installed in relatively random positions, this design can avoid interference from factors such as ambient temperature and local high temperature of the heating element 5, greatly improving the accuracy of temperature measurement. For example, in a warm milking device, the temperature of the milk liquid can be accurately controlled within an appropriate range to ensure that the nutritional components of breast milk or infant formula are not damaged. At the same time, the stable temperature can ensure that the milk liquid always remains at a temperature suitable for infants to drink, without scalding the infant's oral cavity due to excessive temperature or affecting the infant's digestion and absorption due to too low temperature;

[0035] Furthermore, through the cooperation of the high-precision temperature sensing probe 6 and the intelligent control module 4, this liquid heater can achieve precise control of the temperature, and the temperature error can be controlled within a very small range. This is of great significance for some liquid heating scenarios with very strict temperature requirements, such as drug heating in the medical field and reagent heating in the laboratory.

[0036] In the embodiment of the present utility model, the liquid heater body 1 includes a base 8 and a connected main body 9. The base 8 has the heating cavity 2, and the main body 9 has the liquid storage cavity 3. A channel 10 for the temperature sensing end 7 to pass through is provided at the bottom of the main body 9.

[0037] The liquid heater body 1 is divided into two parts, the base 8 and the main body 9. The base 8 has the heating cavity 2, providing a stable installation space for the heating element 5 and the control module 4, avoiding their direct contact with the liquid in the liquid storage cavity 3 and reducing the risk of electrical faults. The main body 9 has the liquid storage cavity 3, which is specifically used for storing the liquid to be heated;

[0038] The temperature sensing end 7 of the temperature sensing probe 6 passes through the heating cavity 2 of the base 8 and extends into the liquid storage cavity 3 through the channel 10 at the bottom of the main body 9. This design enables the temperature sensing probe 6 to be in direct contact with the liquid to be heated. At the same time, the connection method between the main body 9 and the base 8 and the setting of the channel 10 ensure the stability of the position of the temperature sensing probe 6, minimizing the interference of environmental factors and local high temperature of the heating element 5 on temperature measurement;

[0039] Among them, the connection between the base 8 and the main body 9 can be a fixed connection or a detachable connection.

[0040] In the embodiment of the present utility model, a sealing ring 11 for blocking the channel 10 is sleeved on the temperature sensing end 7, and the temperature sensing end 7 abuts against the sealing ring 11.

[0041] The sealing ring 11 seals the channel 10, effectively preventing the liquid in the liquid storage cavity 3 from flowing into the heating cavity 2, avoiding safety accidents such as short circuits and electric leakage of electrical components due to contact with the liquid, improving the use safety of the liquid heater. Especially in equipment such as milk warmers for feeding infants and young children, the improvement of safety is particularly important;

[0042] At the same time, the sealing function of the sealing ring 11 and the close cooperation between the temperature sensing end 7 and the sealing ring 11 make the equipment more stable during operation, thus effectively reducing the influence of shaking caused by liquid flow or external factors on temperature measurement and equipment operation, and improving the stability and reliability of the equipment.

[0043] In the embodiment of the present utility model, a flange portion 12 is circumferentially and continuously arranged along the temperature sensing end 7, and the flange portion 12 is in abutting cooperation with the sealing ring 11;

[0044] Wherein, the sealing ring 11 is within the vertical projection range of the flange portion 12.

[0045] The existence of the flange portion 12 makes the contact between the temperature sensing end 7 and the sealing ring 11 closer and more stable. Specifically, the flange portion 12 applies a certain pressure to the sealing ring 11 to ensure that the sealing ring 11 can closely fit the structure around the channel 10. While effectively preventing liquid leakage, it also reduces the interference of external factors on the temperature sensing end 7 and improves the accuracy of temperature measurement. At the same time, the close cooperation between the flange portion 12 and the sealing ring 11 can reduce the friction and wear between the temperature sensing end 7 and other components, extend the service life of the temperature sensing probe 6. Moreover, good sealing performance can also protect key components such as the heating element 5 and the control module 4 from liquid erosion and improve the overall durability of the equipment.

[0046] In the embodiment of the present utility model, a fixing member 13 is arranged in the heating cavity 2 and is in locking cooperation with the lower end of the temperature sensing probe 6, so as to abut against the outside of the main body 9 through the fixing member 13 and abut against the inside of the main body 9 located in the liquid storage cavity 3 through the flange portion 12, thereby realizing the fixation of the temperature sensing probe 6.

[0047] The fixing member 13 is arranged in the heating cavity 2 and is in locking cooperation with the lower end of the temperature sensing probe 6. On the one hand, the fixing member 13 abuts against the outside of the main body 9, and on the other hand, it abuts against the inside of the main body 9 located in the liquid storage cavity 3 through the flange portion 12, thereby forming a clamping force on the inside and outside to realize the firm fixation of the temperature sensing probe 6;

[0048] While the flange portion 12 of the temperature sensing probe 6 abuts and cooperates with the sealing ring 11 to ensure the sealing performance, it also acts synergistically with the fixing member 13 to jointly achieve the stable installation of the temperature sensing probe 6. The fixing member 13, through its cooperation with the outer side of the main body 9 and the flange portion 12, ensures that the temperature sensing probe 6 will not displace or shake during the operation of the liquid heater.

[0049] In the embodiment of the present utility model, the connection manner between the temperature sensing probe 6 and the fixing member 13, as well as the connection manner between the temperature sensing probe 6 and the channel 10, are both threaded connections.

[0050] The connection between the temperature sensing probe 6 and the fixing member 13 adopts a threaded connection. By rotating the temperature sensing probe 6, it is tightly combined with the fixing member 13. Similarly, the connection between the temperature sensing probe 6 and the bottom channel 10 of the main body 9 is also a threaded connection. The temperature sensing end 7 of the temperature sensing probe 6 enters the channel 10 by rotation and achieves a stable connection.

[0051] The threaded connection provides a reliable mechanical connection method. Through the engagement of the threads, the temperature sensing probe 6 can be firmly fixed between the fixing member 13 and the channel 10. During the operation of the liquid heater, the threaded connection can withstand a certain amount of pressure and vibration, ensuring that the temperature sensing probe 6 will not loosen or fall off.

[0052] Among them, the lower end of the temperature sensing probe 6 has an external thread structure, the inside of the channel 10 has an internal thread structure, and the fixing member 13 can be a nut adapted to the external thread structure, or a combination of a nut and a gasket.

[0053] In the embodiment of the present utility model, the diameter of the hollow cavity of the sealing ring 11 is smaller than the diameter of the channel 10.

[0054] Specifically, the temperature sensing probe 6 is integrally umbrella-shaped. The flange portion 12 of its temperature sensing end 7 abuts the sealing ring 11 against the inner bottom of the liquid storage cavity 3, corresponding to the surface of the channel 10. When the temperature sensing probe 6 is installed in place, the flange portion 12 applies pressure to the sealing ring 11, causing the sealing ring 11 to deform. Considering that the diameter of the hollow cavity of the sealing ring 11 is smaller than the diameter of the channel 10, due to the smaller hollow cavity of the sealing ring 11, under the action of pressure, the material of the sealing ring 11 will be extruded and spread around. On the one hand, part of the material of the sealing ring 11 will be pushed upward and closely fit against the lower surface of the flange portion 12 of the temperature sensing probe 6. The shape and pressure of the flange portion 12 enable the sealing ring 11 to completely fit the lower surface of the flange portion 12 without leaving any gaps, effectively preventing the liquid in the liquid storage cavity 3 from leaking from the contact area between the flange portion 12 and the sealing ring 11.

[0055] On the other hand, the remaining material of the sealing ring 11 will be pushed outward, so as to closely fit on the surface of the channel 10. Since the caliber of the channel 10 is relatively large, the sealing ring 11 will fully fill the space between the surface of the channel 10 and the flange portion 12 during the deformation process. The elasticity of the sealing ring 11 enables it to adapt to the shape of the surface of the channel 10. Whether it is a plane or has a certain curvature, a tight fit can be achieved. This fit is not only effective in the static state, but even during the operation of the device, when the liquid is flowing or there is a slight vibration, the sealing ring 11 can still maintain a good sealing state.

[0056] In the embodiment of the present utility model, the temperature sensing probe 6 includes a housing, a thermal sensitive element built in the housing, and a wire group connected to the thermal sensitive element. The wire group is electrically connected to the heating element 5 or the control module 4.

[0057] The temperature sensing probe 6 is composed of a housing, a thermal sensitive element built in the housing, and a wire group connecting the thermal sensitive element. The housing plays a role in protecting the internal thermal sensitive element and the wire group, and at the same time provides a certain mechanical strength and stability for the temperature sensing probe 6. The thermal sensitive element is the core component of the temperature sensing probe 6, which can generate corresponding electrical signals according to the change of temperature. The wire group electrically connects the thermal sensitive element to the heating element 5 or the control module 4 to realize the transmission of temperature signals.

[0058] Among them, the thermal sensitive element is located at the head of the housing, so that the head of the housing can be used as the temperature sensing end 7, which is convenient for more accurate inspection of the thermal sensitive element.

[0059] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.

Claims

1. A liquid heater for precise temperature measurement, characterized in that, It includes a liquid heater body which has a heating chamber and a liquid storage chamber. A control module, a heating element electrically connected to the control module, and a temperature sensing probe are arranged in the heating chamber. The temperature sensing end of the temperature sensing probe passes through the heating chamber and extends into the liquid storage chamber.

2. The liquid heater for precise temperature measurement according to claim 1, wherein The liquid heater body includes a base and a connected main body. The base has the heating chamber, and the main body has the liquid storage chamber. A channel for the temperature sensing end to pass through is provided at the bottom of the main body.

3. The liquid heater for precise temperature measurement according to claim 2, characterized in that, A sealing ring for blocking the channel is sleeved on the temperature sensing end, and the temperature sensing end abuts against the sealing ring.

4. The liquid heater for precise temperature measurement according to claim 3, characterized in that, A flange portion is circumferentially and continuously arranged along the temperature sensing end, and the flange portion is in abutting cooperation with the sealing ring. Among them, the sealing ring is within the vertical projection range of the flange portion.

5. The liquid heater for precise temperature measurement according to claim 4, characterized in that, A fixing member which is in locking cooperation with the lower end of the temperature sensing probe is arranged in the heating chamber, so as to abut against the outside of the main body through the fixing member, and abut against the inside of the main body in the liquid storage chamber through the flange portion, thereby realizing the fixation of the temperature sensing probe.

6. The liquid heater for precise temperature measurement according to claim 5, wherein The connection mode between the temperature sensing probe and the fixing member, and the connection mode between the temperature sensing probe and the channel are both threaded connections.

7. The liquid heater for precise temperature measurement according to claim 3, wherein The diameter of the hollow cavity of the sealing ring is smaller than the diameter of the channel.

8. A liquid heater for accurate temperature measurement according to any one of claims 1-7, characterized in that, The temperature sensing probe includes a housing, a thermosensitive element built in the housing, and a wire group connected to the thermosensitive element. The wire group is electrically connected to the heating element or the control module.

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