A heat preservation device

Abstract

This utility model discloses a heat preservation device, comprising: a housing; a heat preservation component disposed on the housing for heating and maintaining temperature, wherein a heating zone is formed on the surface of the housing corresponding to the heat preservation component; and a detection component disposed on the housing, including an ultrasonic transmitter and an ultrasonic receiver. The ultrasonic transmitter emits ultrasonic waves, and the ultrasonic receiver receives ultrasonic waves to detect whether an object is placed on the surface of the heating zone, thereby activating the heat preservation component. This utility model's heat preservation device detects whether an object is placed on the surface of the heating zone using ultrasonic waves. Because the effective detection angle of ultrasonic waves is relatively large, even if the object deviates from the center of the heating zone, it is still within the effective detection angle range of the ultrasonic waves, and the ultrasonic receiver can still receive the reflected ultrasonic waves, thus detecting whether an object is placed on the surface of the heating zone. Furthermore, ultrasonic detection is not affected by the material or color of the object, resulting in higher detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a heat preservation device. Background Technology

[0002] As people's living standards improve, insulated panels for heating and keeping food warm are becoming increasingly popular because they can maintain the temperature and taste of beverages. Currently, most commercially available insulated panels use infrared emitters and receivers to detect the presence of objects on the panel, only initiating heating and warming upon detection. However, when using round cups to keep beverages warm, if the cups are placed too far off-center from the heating element, the infrared light emitted by the emitter may be reflected at an excessively large angle, potentially causing the receiver to miss the light and resulting in misjudgment. Furthermore, infrared light cannot detect transparent glass cups. Utility Model Content

[0003] This utility model provides a heat preservation device to solve the technical problem that existing heat preservation devices may misjudge objects when using infrared detection due to object displacement or the transparency of the object material.

[0004] To solve the above-mentioned technical problems, this utility model provides a heat preservation device, including...

[0005] case;

[0006] A heat-insulating component is disposed on the housing for heating and maintaining temperature, and a heating zone is formed on the surface of the housing corresponding to the heat-insulating component;

[0007] The detection component, disposed on the housing, includes an ultrasonic transmitter and an ultrasonic receiver. The ultrasonic transmitter is used to emit ultrasonic waves toward the heating zone, and the ultrasonic receiver is used to receive ultrasonic waves to detect whether an object is placed on the surface of the heating zone, thereby enabling the heat preservation component to operate.

[0008] The further technical solution is as follows: the thermal insulation component includes:

[0009] A heating unit is disposed inside the housing for heating, and the heating zone is formed on the upper surface of the housing corresponding to the heating unit;

[0010] An infrared temperature probe is disposed on the surface of the housing and is used to measure the temperature of an object placed in the heating zone;

[0011] The controller, connected to the heating unit, the infrared temperature probe, and the detection component, is used to activate the heating unit and the infrared temperature probe when the detection component detects an object placed on the surface of the heating zone to heat the object, and to maintain the output of the heating unit when the infrared temperature probe detects that the temperature of the object's sidewall has reached a preset temperature threshold to achieve heat preservation.

[0012] The further technical solution is as follows: the housing includes a face shell, the heating unit is located inside the face shell, the heating area is formed in the middle of the upper surface of the face shell, and a first mounting part is formed by an upward protrusion on one side of the upper surface of the face shell. The infrared temperature measuring probe is mounted on the side of the first mounting part facing the heating area, and the ultrasonic transmitter and the ultrasonic receiver are disposed on the upper surface of the face shell.

[0013] A further technical solution is as follows: the ultrasonic transmitter and the ultrasonic receiver are disposed on the upper surface of the shell on the side opposite to the infrared temperature probe.

[0014] A further technical solution is as follows: a second mounting part is formed on the side of the upper surface of the shell opposite to the first mounting part, and two mounting grooves are opened on the side of the second mounting part facing the heating zone. The ultrasonic transmitter and the ultrasonic receiver are respectively disposed in the two mounting grooves.

[0015] A further technical solution is as follows: the infrared temperature measuring probe is installed obliquely upward in the middle of one side of the first mounting part.

[0016] A further technical solution is as follows: a display screen is provided on the side of the first mounting part facing away from the heating zone, and the display screen is connected to the controller for displaying the temperature.

[0017] The further technical solution is as follows: a knob is also provided on the first mounting part, and the knob is connected to the controller for adjusting the heat preservation temperature.

[0018] A further technical solution is as follows: a button is also provided on the first mounting part, and the button is connected to the controller to control the switch of the heat preservation device.

[0019] The further technical solution is that the heat preservation device also includes a power supply module for power supply.

[0020] Compared with the prior art, the detection component of the heat preservation device of this utility model includes an ultrasonic transmitter for emitting ultrasonic waves toward the heating area and an ultrasonic receiver for receiving ultrasonic waves. The ultrasonic transmitter emits ultrasonic waves, and the ultrasonic receiver receives them to detect whether there is an object placed on the surface of the heating area, thereby enabling the heat preservation component to work. It can be seen that the heat preservation device of this utility model detects whether there is an object placed on the surface of the heating area by ultrasonic waves. Because the effective detection angle of ultrasonic waves is relatively large, even if the object is offset and deviates from the center of the heating area, it is still within the effective detection angle range of ultrasonic waves. The ultrasonic receiver can still receive the reflected ultrasonic waves, thereby detecting whether there is an object placed on the surface of the heating area. Moreover, ultrasonic detection is not affected by the material and color of the object, and the detection accuracy is higher. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structural block of a specific embodiment of the heat preservation device of this utility model.

[0022] Figure 2 This is a schematic diagram of a specific embodiment of the heat preservation device of this utility model.

[0023] Figure 3 yes Figure 2 The diagram shows the structure of the insulation device from another angle.

[0024] Figure 4 yes Figure 2 A top view of the insulation device shown.

[0025] Figure 5 yes Figure 2 A side view of the insulation device shown. Detailed Implementation

[0026] To better understand the technical content of this utility model, the technical solution of this utility model will be further introduced and explained below with reference to the schematic diagram, but it is not limited thereto.

[0027] Reference Figures 1 to 5 , Figures 1 to 5A specific embodiment of the heat preservation device 1 of this utility model is shown. In the embodiment shown in the figures, the heat preservation device 1 includes a housing 10, a heat preservation component, and a detection component 30; wherein, the heat preservation component is disposed on the housing 10 and is used to heat and maintain the temperature, and a heating zone 60 is formed on the surface of the housing 10 corresponding to the heat preservation component; the detection component 30 is disposed on the housing 10 and includes an ultrasonic transmitter 31 and an ultrasonic receiver 32, the ultrasonic transmitter 31 is used to emit ultrasonic waves toward the heating zone 60, and the ultrasonic receiver 32 is used to receive ultrasonic waves to detect whether an object is placed on the surface of the heating zone 60, thereby enabling the heat preservation component to operate. Based on the above design, in this invention, ultrasonic waves are emitted by the ultrasonic transmitter 31. If there is an object in the heating zone 60, the ultrasonic waves are reflected and received by the ultrasonic receiver 32, thereby causing the heat preservation component to work, heating the object (such as a cup containing a beverage) and maintaining the temperature at a preset temperature threshold (e.g., 45°C), thus achieving heat preservation to maintain the temperature and taste of the beverage in the cup. That is, this invention detects whether there is an object on the surface of the heating zone 60 by ultrasonic waves. Because the effective detection angle of ultrasonic waves is relatively large, even if the object is offset from the center of the heating zone 60, it is still within the effective detection angle range of ultrasonic waves. The ultrasonic receiver 32 can still receive the reflected ultrasonic waves, thereby detecting whether there is an object on the surface of the heating zone 60. Moreover, ultrasonic detection is not affected by the material and color of the object. Even if the object is made of transparent material, it can still be detected, resulting in higher detection accuracy.

[0028] In some embodiments, the heat preservation component includes a heating unit 21, an infrared temperature probe 22, and a controller 23. The heating unit 21 is disposed within the housing 10 and is used for heating. Preferably, the heating unit 21 can utilize any form of heating element such as a heating film, heating wire, or heating plate. A heating zone 60 is formed on the upper surface of the housing 10 corresponding to the heating unit 21. The infrared temperature probe 22 is disposed on the surface of the housing 10 and is used to measure the temperature of an object placed in the heating zone 60. The controller 23 is connected to the heating unit 21, the infrared temperature probe 22, and the detection component 30, and is used to detect heating when the detection component 30 detects heating. When an object is placed on the surface of zone 60, the heating unit 21 and the infrared temperature probe 22 are activated to heat the object. When the infrared temperature probe 22 detects that the temperature of the object's sidewall has reached a preset temperature threshold, the output of the heating unit 21 is maintained to achieve heat preservation. During the heat preservation process, if the object is removed and the ultrasonic receiver 32 does not receive the reflected ultrasonic wave, or if the time for receiving the reflected ultrasonic wave is too long (the reception time exceeds a preset time threshold, for example, more than 5 seconds without receiving the reflected ultrasonic wave), it indicates that no object is placed on the surface of the heating zone 60, and the controller 23 controls the heating unit 21 to stop working. Preferably, the controller 23 can be a microcontroller or the like to implement the control function. Based on the above design, temperature measurement is achieved through infrared radiation. The infrared temperature probe 22 emits infrared radiation towards the side wall of the object placed in the heating zone 60. By detecting the temperature of the side wall of the object, the temperature of the liquid inside the object can be obtained. When the temperature reaches a preset temperature threshold, the controller 23 can maintain the output power of the heating unit 21 at this time to achieve heat preservation. Moreover, the non-contact temperature measurement method can isolate the infrared temperature probe 22 from the heating zone 60. The temperature collected by the infrared temperature probe 22 is the temperature of the side wall area of ​​the object, which is not affected by the temperature of the heating unit 21 and represents the true temperature of the liquid inside the object, thus achieving higher accuracy in temperature detection.

[0029] Continue to refer to Figures 2 to 5In some embodiments, the housing 10 includes a face shell 11, the heating unit 21 is located inside the face shell 11, the heating zone 60 is formed in the middle of the upper surface of the face shell 11, and a first mounting portion 12 is formed by an upward protrusion on one side of the upper surface of the face shell 11. The infrared temperature measuring probe 22 is mounted on the side of the first mounting portion 12 facing the heating zone 60 to emit infrared rays in the direction of the heating zone 60. The ultrasonic transmitter 31 and the ultrasonic receiver 32 are disposed on the upper surface of the face shell 11. Preferably, in order to facilitate the infrared rays emitted by the infrared temperature measuring probe 22 to be directed towards the side wall of the object, the infrared temperature measuring probe 22 is mounted obliquely upward in the middle of one side of the first mounting portion 12, that is, the infrared temperature measuring probe 22 forms an inclined angle with the upper surface of the face shell 11. It can be understood that in some other embodiments, the infrared temperature measuring probe 22 may also emit infrared rays in a direction perpendicular to the side wall of the object, in which case the infrared rays emitted by the infrared temperature measuring probe 22 are parallel to the upper surface of the face shell 11.

[0030] like Figure 2 As shown, in this embodiment, the ultrasonic transmitter 31 and the ultrasonic receiver 32 are disposed on the side of the upper surface of the housing 11 opposite to the infrared temperature probe 22. Specifically, a second mounting portion 13 is formed on the side of the upper surface of the housing 11 opposite to the first mounting portion 12. The second mounting portion 13 has two mounting slots on the side facing the heating zone 60, and the ultrasonic transmitter 31 and the ultrasonic receiver 32 are respectively disposed in the two mounting slots.

[0031] Furthermore, such as Figure 2 and Figure 4 As shown, in some embodiments, a display screen 40 is provided on the side of the first mounting part 12 facing away from the heating zone 60. The display screen 40 is connected to the controller 23 and is used to display the temperature. The heat preservation temperature can also be set through the display screen 40.

[0032] In some embodiments, combined with Figure 1The heat preservation device 1 also includes a power module 70 for power supply, and the first mounting part 12 is also provided with a button 50 and a knob 80. The button 50 and the knob 80 are both connected to the controller 23. The button 50 is used to control the power on and off of the heat preservation device 1, and the knob 80 is used to adjust the heat preservation temperature. Specifically, in this embodiment, when the power module 70 supplies power, the ultrasonic transmitter 31 emits ultrasonic waves. If there is an object in the heating zone 60, the ultrasonic waves are reflected and received by the ultrasonic receiver 32. After the ultrasonic receiver 32 receives the ultrasonic waves, the controller 23 controls the heating unit 21 to work to heat the object in the heating zone 60. When the infrared temperature probe 22 detects that the temperature of the side wall of the object has reached the preset temperature threshold, the output of the heating unit 21 is maintained to achieve heat preservation. During the heat preservation process, the heat preservation temperature (i.e., the preset temperature threshold) can be adjusted by the knob 80 or the display screen 40. If the object is removed and the ultrasonic receiver 32 does not receive the reflected ultrasonic waves, or the time to receive the reflected ultrasonic waves is long, it indicates that there is no object on the surface of the heating zone 60. The controller 23 controls the heating unit 21 to stop working, and the heat preservation device 1 automatically stops heating, which plays a certain role in energy saving.

[0033] In summary, this invention uses ultrasonic waves to detect whether an object is placed on the surface of the heating zone. Because the effective detection angle of ultrasonic waves is relatively large, even if the object deviates from the center of the heating zone, it is still within the effective detection angle range of the ultrasonic waves. The ultrasonic receiver can still receive the reflected ultrasonic waves, thereby detecting whether an object is placed on the surface of the heating zone. Moreover, ultrasonic detection is not affected by the material and color of the object; even transparent materials can be detected, resulting in higher detection accuracy. Furthermore, this invention uses infrared light to detect the temperature of the liquid inside the object. This non-contact temperature measurement method ensures that the temperature detection is not affected by the temperature of the heating zone, resulting in even higher accuracy.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A heat retaining device, characterized by, The heat preservation device includes: case; A heat-insulating component is disposed on the housing for heating and maintaining temperature, and a heating zone is formed on the surface of the housing corresponding to the heat-insulating component; The detection component, disposed on the housing, includes an ultrasonic transmitter and an ultrasonic receiver. The ultrasonic transmitter is used to emit ultrasonic waves toward the heating zone, and the ultrasonic receiver is used to receive ultrasonic waves to detect whether an object is placed on the surface of the heating zone, thereby enabling the heat preservation component to operate.

2. The thermal device of claim 1, wherein, The thermal insulation component includes: A heating unit is disposed inside the housing for heating, and the heating zone is formed on the upper surface of the housing corresponding to the heating unit; An infrared temperature probe is disposed on the surface of the housing and is used to measure the temperature of an object placed in the heating zone; The controller, connected to the heating unit, the infrared temperature probe, and the detection component, is used to activate the heating unit and the infrared temperature probe when the detection component detects an object placed on the surface of the heating zone to heat the object, and to maintain the output of the heating unit when the infrared temperature probe detects that the temperature of the object's sidewall has reached a preset temperature threshold to achieve heat preservation.

3. The thermal device of claim 2, wherein, The housing includes a face shell, the heating unit is located inside the face shell, the heating area is formed in the middle of the upper surface of the face shell, and a first mounting part is formed by an upward protrusion on one side of the upper surface of the face shell. The infrared temperature measuring probe is mounted on the side of the first mounting part facing the heating area, and the ultrasonic transmitter and the ultrasonic receiver are disposed on the upper surface of the face shell.

4. The thermal device of claim 3, wherein, The ultrasonic transmitter and the ultrasonic receiver are disposed on the upper surface of the faceplate on the side opposite to the infrared temperature probe.

5. The thermal device of claim 4, wherein, A second mounting portion is formed on the side of the upper surface of the shell opposite to the first mounting portion. Two mounting slots are provided on the side of the second mounting portion facing the heating zone. The ultrasonic transmitter and the ultrasonic receiver are respectively disposed in the two mounting slots.

6. The thermal device of claim 3, wherein The infrared temperature probe is installed obliquely upwards in the middle of one side of the first mounting part.

7. The thermal device of claim 3, wherein A display screen is provided on the side of the first mounting part facing away from the heating zone. The display screen is connected to the controller and is used to display the temperature.

8. The thermal device of claim 3, wherein, The first mounting part is also provided with a knob, which is connected to the controller and used to adjust the heat preservation temperature.

9. The heat preservation device as described in claim 3, characterized in that, The first mounting part is also provided with a button, which is connected to the controller and is used to control the switch of the heat preservation device.

10. The thermal device of claim 1, wherein, The insulation device also includes a power module for supplying power.

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