Heater provided with a temperature sensing device
By installing a sealed temperature sensing module at the bottom of the heater basket and using wireless power supply, the problem of the gap between infrared sensors affecting temperature accuracy has been solved, enabling accurate detection of milk liquid temperature and improved taste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEAR ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-14
AI Technical Summary
In existing heaters, the gap between the infrared sensor and the bottle affects temperature accuracy, resulting in a poorer taste of the milk, and the sensor is easily affected by hot air heating.
A temperature sensing module is installed at the bottom of the heater basket. It adopts a sealed design with the temperature probe protruding from the detection port. Combined with wireless power supply and steam heating, it avoids the influence of steam and accurately measures the temperature at the bottom of the bottle.
Improve the accuracy of temperature detection, avoid the influence of steam, enhance the taste of milk, and increase ease of use.
Smart Images
Figure CN224483733U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to household appliances, specifically to a heater equipped with a temperature sensing device. Background Technology
[0002] A heater is used to heat containers containing liquids, such as baby bottles, soup, and porridge. Taking a bottle warmer as an example, an infrared sensor that detects the bottle's temperature is usually placed on the inner wall of the cavity where the bottle is placed. A combination of a heating element and a fan is used to create hot air in the cavity to heat the bottle and milk. When the set temperature is reached, the hot air is stopped, and the heating process ends.
[0003] However, because the infrared sensor's temperature measurement method dictates that it does not directly contact the bottle, when the infrared sensor is placed on the side wall, there is a gap between it and the bottle, and they are in the same inner cavity. When the hot air heats the bottle, it also heats the infrared sensor simultaneously, which affects the accuracy of the temperature sensing and makes the milk taste worse.
[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model discloses a heater equipped with a temperature sensing device.
[0006] The technical solution adopted in this embodiment of the utility model is as follows:
[0007] A heater equipped with a temperature sensing device includes a basket with a detection port at the bottom of the basket; the temperature sensing device includes a bottom cover fixed to the bottom of the basket.
[0008] An installation space is formed between the basket and the bottom cover; a temperature sensing module is fixed in the installation space; the temperature sensing probe of the temperature sensing module protrudes from the detection port; wherein a first sealing element is installed between the mating interface of the temperature sensing probe and the detection port, and a second sealing element is installed between the mating interface of the bottom cover and the bottom of the basket, so that the installation space becomes a sealed space.
[0009] A further technical solution is that the heater further includes an inner cavity; a heating element is installed at the bottom of the inner cavity; and the basket is placed in the inner cavity.
[0010] A further technical solution is that the heater further includes a housing assembly and a base assembly installed at the bottom of the housing assembly, and a power board is installed on the base assembly; the inner cavity is installed in the housing assembly; and the power board supplies power to the heating element.
[0011] A further technical solution is that there is a water storage space between the bottom cover and the inner cavity; and a steam passage is provided on the basket.
[0012] A further technical solution is that the heater also includes a power supply device; the power supply device includes a receiving coil disposed in the installation space and a transmitting coil fixed on the inner cavity; the receiving coil is electrically connected to the temperature sensing module; when the basket is placed in the inner cavity, the positions of the receiving coil and the transmitting coil correspond, and an energy transmission path can be formed through electromagnetic induction coupling.
[0013] A further technical solution is that a coil support is fixed in the installation space; the receiving coil is wound around the coil support.
[0014] A further technical solution is that the coil support includes a support column and a winding ring fixed around the support column; the support column is used to support the circuit board of the temperature sensing module and provide a path for the power supply line of the temperature sensing module; the receiving coil is wound in a first groove on the winding ring.
[0015] A further technical solution is that an annular positioning groove is provided at the bottom of the basket; the upper edge of the winding ring is inserted into the positioning groove, and the lower edge of the winding ring extends to the bottom cover.
[0016] A further technical solution is that a second wire groove is provided on the side wall of the inner cavity; the transmitting coil is wound in the second wire groove.
[0017] A further technical solution is that the first sealing element includes an integrally connected radial sealing structure and an axial sealing structure; the radial sealing structure is assembled between the detection port and the temperature sensing probe; the axial sealing structure extends to the space between the circuit board of the temperature sensing module and the bottom surface of the basket.
[0018] A further technical solution is that the bottom of the basket is provided with an annular groove, and the bottom cover is provided with a retaining rib for installation in the annular groove; the second sealing member is sleeved on the top of the retaining rib and assembled in the gap between the annular groove and the retaining rib.
[0019] The beneficial effects of this utility model embodiment are as follows:
[0020] In this embodiment of the invention, the temperature sensing module is set at the bottom of the container to detect the temperature of the liquid inside the container. This can effectively reduce the interference of ambient temperature on the detection results and avoid the problem of temperature measurement deviation caused by the installation position of the sensor being lower than the side wall. This ensures the accuracy of temperature detection and can improve the taste.
[0021] In this embodiment of the invention, when the heating element is running, the water in the water storage space is converted into water vapor, which heats the liquid inside the container. The temperature sensing device in this embodiment adopts a sealed structure design. The temperature sensing module with electronic components is encapsulated in the sealed space formed by the basket and the bottom cover. Only the temperature sensing probe extends from the detection port of the basket to collect the temperature. This design makes it unaffected by the water vapor generated during the heating process.
[0022] Furthermore, regarding the power supply of the temperature sensing module, considering its sealed installation environment, this embodiment also adopts a wireless power supply method, which is more suitable for the use scenario of the heater and avoids the problem of the seal being compromised due to the additional power supply interface. This improves the ease of use while ensuring the reliability of the system. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of an embodiment of the present utility model.
[0024] Figure 2 yes Figure 1 Cross-sectional view.
[0025] Figure 3 yes Figure 2 An enlarged schematic diagram of the structure of part A in the middle.
[0026] Figure 4 This is an exploded cross-sectional view of the basket and temperature sensing device according to an embodiment of the present invention.
[0027] Figure 5 This is a schematic diagram of the inner cavity in an embodiment of this utility model.
[0028] In the diagram: 1. Basket; 101. First positioning groove; 102. Second positioning groove; 2. Temperature sensing device; 201. Bottom cover; 202. Installation space; 203. Temperature sensing module; 204. First sealing element; 205. Second sealing element; 206. Coil bracket; 207. Temperature probe; 208. First wire groove; 209. Support column; 3. Inner cavity; 301. Heating element; 302. Second wire groove; 4. Power supply device; 401. Receiving coil; 402. Transmitting coil; 5. Outer shell assembly; 501. Control panel; 6. Base assembly; 601. Power board; 7. Top cover. Detailed Implementation
[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0031] Figure 1 This is a schematic diagram of an embodiment of the present utility model. Figure 2 yes Figure 1 A cross-sectional view. For example... Figure 1 , Figure 2 As shown, the heater disclosed in this utility model includes a basket 1. The basket 1 is used to hold items to be heated. In this embodiment, the heater is used to heat a baby bottle. Of course, by changing the shape of the heater and the basket 1 to accommodate larger containers, it can also be used to heat porridge, soup, or other foods. A temperature sensing device 2 is provided at the bottom of the basket 1. The temperature sensing device 2 is used to measure the temperature of the bottom of the item to be heated.
[0032] Figure 3 yes Figure 2 An enlarged schematic diagram of the structure of part A in the middle. Figure 4 This is an exploded cross-sectional view comparing the basket and temperature sensing device according to an embodiment of this utility model. Figures 2-4 As shown, the temperature sensing device 2 includes a bottom cover 201 fixed to the bottom of the basket 1. An installation space 202 is formed between the basket 1 and the bottom cover 201. The temperature sensing module 203 is fixed in the installation space 202. The temperature sensing module 203 includes a temperature probe 207, as well as electronic circuitry such as Bluetooth and a chip. The temperature probe 207 is preferably an infrared temperature probe, but other temperature sensors with similar functions can also be used. The temperature sensing module 203 can use existing technology or commercially available products; its specific structure is not the focus of this invention and will not be described further here. A detection port is also provided at the bottom of the basket 1, through which the temperature probe 207 protrudes. When a baby bottle is placed in the basket 1, the temperature probe 207 can detect the temperature of the bottom of the bottle through the detection port.
[0033] A first seal 204 is installed between the temperature probe 207 and the detection port, and a second seal 205 is installed between the bottom cover 201 and the basket 1, so that the installation space 202 becomes a sealed space.
[0034] In this embodiment, the temperature sensing module 203 detects the temperature at the bottom of the bottle, which is less susceptible to ambient temperature fluctuations compared to existing technologies that typically detect the temperature of the bottle's sidewalls. Furthermore, when the temperature sensor is installed on the sidewall of the bottle, a large temperature deviation can occur if the milk level is below the sensor's position, resulting in a poor taste. This embodiment avoids this problem. Moreover, there can be no gap between the temperature sensing probe 207 located at the bottom of the bottle and the bottle itself, further preventing temperature measurement deviations caused by the influence of heating steam on the probe 207.
[0035] Furthermore, the first seal 204 includes an integrally connected radial sealing structure and an axial sealing structure. The radial sealing structure is fitted between the inner wall of the detection port and the gap between the temperature probe 207. The axial sealing structure extends between the circuit board of the temperature sensing module 203 and the bottom surface of the basket 1. The first seal 204, through the cooperation of the radial sealing structure and the axial sealing structure, achieves three-dimensional spatial isolation between the temperature probe 207 and the detection port.
[0036] Furthermore, the bottom of the basket 1 is provided with a first annular positioning groove 101, and the bottom cover 201 is provided with a surrounding rib. The second sealing member 205 is sleeved on the top of the surrounding rib and assembled in the gap between the first positioning groove 101 and the surrounding rib. That is, the surrounding rib and the first positioning groove 101 are coaxially nested, and the second sealing member 205 is clamped between the outer wall of the surrounding rib and the inner wall of the first positioning groove 101. The second sealing member 205 serves as an elastic medium to fill the mating gap between the basket 1 and the bottom cover 201.
[0037] The first seal 204 and the second seal 205 form a sealed space for the temperature sensing device 2, with only the temperature probe 207 exposed to detect the temperature at the bottom of the container. When the heater uses steam, the basket 1 and the container in the basket 1 are surrounded by steam. The sealed space of the temperature sensing device 2 can prevent the electronic components in the temperature sensing module 203 from being affected by the steam and avoid damage from moisture.
[0038] like Figure 2 As shown, the heater also includes an inner cavity 3. A heating element 301 is installed at the bottom of the inner cavity 3. The basket 1 can be placed in the inner cavity 3.
[0039] Furthermore, when the basket 1 is placed in the inner cavity 3, the bottom cover 201 fixed to the bottom of the basket 1 and the bottom of the inner cavity 3 do not directly contact each other; there is a water storage space between them. The basket 1 also has a steam vent. During use, water is contained in the water storage space. When the heating element 301 operates, the water in the water storage space turns into steam, which comes into contact with the container inside the basket 1 through the steam vent, heating the liquid in the container. Since the temperature sensing device 2 is completely sealed, it is not affected by the steam. In the prior art, the temperature sensing element is generally placed on the side wall of the container, and a waterless heating method such as hot air is preferably used to heat the container. The technical solution of this embodiment solves this problem by using steam heating, and it also allows for more accurate measurement of the temperature of the liquid inside the container from the bottom.
[0040] Furthermore, such as Figure 2 , Figure 4 As shown, the heater also includes a power supply device 4. The power supply device 4 includes a receiving coil 401 disposed in the mounting space 202 and a transmitting coil 402 fixed in the inner cavity 3. When the basket 1 is placed in the inner cavity 3, the positions of the receiving coil 401 and the transmitting coil 402 correspond, and an energy transmission path can be formed through electromagnetic induction coupling. Non-contact electrical energy transfer is achieved based on the mutual inductance effect, so that after the transmitting coil 402 is connected to AC power, the receiving coil 401 supplies power to the temperature sensing module 203.
[0041] Furthermore, a coil bracket 206 is fixed in the installation space 202. The receiving coil 401 is wound around the coil bracket 206 and electrically connected to the temperature sensing module 203. This electrical connection refers to a connection state that achieves electrical signal transmission through a conductor or conductive path, ensuring electrical continuity and transmission function. Specifically, the coil bracket 206 includes a support post 209 and a winding ring fixed around the support post 209. The support post 209 is used to support the circuit board of the temperature sensing module 203, and has a through hole in the middle through which the power supply line of the temperature sensing module 203 can pass. The receiving coil 401 is wound in a first groove 208 provided on the outer wall of the winding ring, and the receiving coil 401 is electrically connected to the temperature sensing module 203 from the bottom of the support post 209, making the structure in the installation space 202 more compact. The receiving coil 401 supplies power to the temperature sensing probe 207, Bluetooth module, etc., in the temperature sensing module 203.
[0042] Furthermore, a second annular positioning groove 102 is provided at the bottom of the basket 1, coaxially arranged with the first positioning groove 101. The upper edge of the winding ring of the coil bracket 206 is inserted into the second positioning groove 102, and the lower edge of the coil bracket 206 extends to the bottom cover 201. The coil bracket 206 further encloses a smaller space within the installation space 202, surrounding the location of the temperature sensing module 203, which can further increase the heat preservation effect and protect the temperature sensing module 203 from external temperature interference. The coil bracket 206 and the bottom cover 201 can be made of materials with good heat preservation and low thermal conductivity to increase the heat insulation effect and increase the accuracy of temperature measurement.
[0043] Figure 5 This is a schematic diagram of the inner cavity in an embodiment of this utility model. (See diagram below.) Figure 5 As shown, a second groove 302 is further provided on the outer wall of the inner cavity 3. The transmitting coil 402 is wound in the second groove 302, which can better position it so that when the basket 1 is placed in the inner cavity 3, the height positions of the transmitting coil 402 and the receiving coil 401 correspond exactly.
[0044] In this embodiment, to avoid the influence of water vapor, the temperature sensing module 203 is completely sealed in the sealed space between the basket 1 and the bottom cover 201, with only the temperature sensing probe 207 exposed at the detection port of the basket 1. Therefore, using wireless power supply to power the temperature sensing module 203 is more suitable for use scenarios such as heaters, solving the problem that electronic components in a confined space are not easy to power, or that it is not easy to keep closed when powering them up by adding more openings.
[0045] When installing the temperature sensing device 2, firstly, perform the following three steps: press the first sealing element 204 into the detection port at the bottom of the basket 1; wind the receiving coil 401 onto the coil bracket 206 and electrically connect the temperature sensing module 203 to the receiving coil 401; and fit the second sealing element 205 onto the rib of the bottom cover 201.
[0046] Next, the temperature sensing module 203 is stacked on the first sealing member 204 from below the basket 1, and the temperature sensing module 203 is fixed to the fixing post at the bottom of the basket 1 with screws or other fasteners.
[0047] Finally, the coil bracket 206 is inserted around the temperature sensing module 203 from the bottom, and the bottom cover 201 is fixed to the fixing post at the bottom of the basket 1 with screws.
[0048] like Figure 1 , Figure 2As shown, the heater also includes a housing assembly 5 and a base assembly 6 mounted on the bottom of the housing assembly 5, with a power supply board 601 mounted on the base assembly 6. A control panel 501 is also mounted on the outer wall of the housing assembly 5 for controlling the heating process. The inner cavity 3 is installed in the housing assembly 5 and fixed to the housing assembly 5 by screws at the bottom of the inner cavity 3. The power supply board 601 supplies power to the heating element 301. In use, the top cover 7 is placed on the housing assembly 5, placing the basket 1 in a relatively enclosed space, allowing steam to heat the container inside.
[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0050] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A heater equipped with a temperature sensing device, characterized in that, The heater includes a basket, and a detection port is provided at the bottom of the basket; the temperature sensing device includes: The bottom cover is fixed to the bottom of the basket; An installation space is formed between the basket and the bottom cover; A temperature sensing module is fixed in the installation space; the temperature sensing probe of the temperature sensing module protrudes from the detection port. A first sealing element is installed between the mating interface of the temperature sensing probe and the detection port, and a second sealing element is installed between the mating interface of the bottom cover and the bottom of the basket, so that the installation space becomes a sealed space.
2. The heater equipped with a temperature sensing device according to claim 1, characterized in that, The heater further includes an inner cavity; a heating element is installed at the bottom of the inner cavity; and the basket is placed in the inner cavity.
3. The heater equipped with a temperature sensing device according to claim 2, characterized in that: The heater further includes a housing assembly and a base assembly mounted on the bottom of the housing assembly, with a power board mounted on the base assembly; the inner cavity is installed in the housing assembly; and the power board supplies power to the heating element.
4. The heater equipped with a temperature sensing device according to claim 2, characterized in that, There is a water storage space between the bottom cover and the inner cavity; the basket is provided with a steam vent.
5. The heater equipped with a temperature sensing device according to claim 2, characterized in that, The heater also includes a power supply device; the power supply device includes a receiving coil disposed in the installation space and a transmitting coil fixed on the inner cavity; the receiving coil is electrically connected to the temperature sensing module; when the basket is placed in the inner cavity, the positions of the receiving coil and the transmitting coil correspond, and an energy transmission path can be formed through electromagnetic induction coupling.
6. The heater equipped with a temperature sensing device according to claim 5, characterized in that: A coil support is fixed in the installation space; the receiving coil is wound around the coil support.
7. The heater equipped with a temperature sensing device according to claim 6, characterized in that: The coil support includes a support column and a winding ring fixed around the support column; the support column is used to support the circuit board of the temperature sensing module and provide a path for the power supply line of the temperature sensing module; the receiving coil is wound in a first groove on the winding ring.
8. The heater equipped with a temperature sensing device according to claim 7, characterized in that: An annular positioning groove is provided at the bottom of the basket; the upper edge of the winding ring is inserted into the positioning groove, and the lower edge of the winding ring extends to the bottom cover.
9. The heater equipped with a temperature sensing device according to claim 6, characterized in that: A second wire groove is provided on the side wall of the inner cavity; the transmitting coil is wound in the second wire groove.
10. The heater equipped with a temperature sensing device according to claim 1, characterized in that, The first sealing element includes an integrally connected radial sealing structure and an axial sealing structure; the radial sealing structure is assembled between the detection port and the temperature sensing probe; the axial sealing structure extends between the circuit board of the temperature sensing module and the bottom surface of the basket.
11. The heater equipped with a temperature sensing device according to claim 1, characterized in that, The bottom of the basket is provided with an annular groove, and the bottom cover is provided with a retaining rib for installation in the annular groove; the second sealing member is sleeved on the top of the retaining rib and assembled in the gap between the annular groove and the retaining rib.