Thermos capable of discharging water at constant temperature

Abstract

The utility model relates to the technical field of thermos, in particular to a thermos capable of outputting water at a constant temperature, which comprises a high-sensitivity detector, a water outlet temperature sensing piece, a heating wire, a thermos and at least two indicator lights, the water outlet temperature-sensing piece is arranged at a water outlet of the hot water kettle, a water receiving level is arranged below the water outlet, the water outlet is provided with a flow guide pipe with a pipe opening facing the water receiving level, the flow guide pipe is provided with a heating cavity along a pipeline of the flow guide pipe, and the heating wire is wound in the heating cavity; when water flows out of the kettle, if the water outlet temperature sensing piece detects that the water outlet temperature is lower than the preset temperature, the heating wire heats water flowing through the flow guide pipe through the heating cavity; the indicating lamps are arranged along the outer edge of the water receiving level, at least one indicating lamp is arranged at the upper end and the lower end of the water receiving level, and the high-sensitivity detector is arranged in the center of the water receiving level. When the high-sensitivity detector senses that the user is close to the received water, the indicating lamp prompts the user in a preset lighting mode; the problem that the water outlet temperature of an existing constant-temperature water heating kettle is too low is solved, and the safety of constant-temperature water outlet is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hot water kettle, especially a constant temperature water outlet hot water kettle. BACKGROUND

[0002] Traditional hot water kettles usually only achieve simple boiling function and cannot meet the demand of users for accurate water temperature control. Therefore, with the progress of science and technology and the pursuit of consumers for life quality, constant temperature hot water kettles gradually appear in the market. Such hot water kettles can maintain the water temperature in a certain range through the built-in temperature control system after boiling water, which is convenient for users to use hot water at appropriate temperature at any time.

[0003] However, in actual use, the existing constant temperature hot water kettle still has some problems. Especially when the user needs to click to pour water, due to the natural drop of water temperature, heat loss in the process of pouring water and the precision limitation of the temperature control system, the pouring water temperature is often slightly lower than the target temperature set by the user. This problem not only affects the user experience, but also may have adverse effects on scenes that need to accurately control the water temperature (such as brewing specific temperature drinks). SUMMARY

[0004] In view of the above defects, the purpose of the utility model is to provide a constant temperature water outlet hot water kettle, which solves the problem of too low pouring water temperature of the existing constant temperature hot water kettle and ensures the safety of constant temperature water outlet.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A constant temperature water outlet hot water kettle, comprising a high sensitivity detector, a water outlet temperature sensing piece, a heating wire, a hot water kettle and at least two indicator lights; the water outlet temperature sensing piece is arranged at the water outlet of the hot water kettle, a water receiving level is arranged below the water outlet of the hot water kettle, a flow guide pipe is arranged at the water outlet of the hot water kettle, the pipe opening of the flow guide pipe faces the water receiving level, a heating cavity is arranged along the pipeline of the flow guide pipe, and the heating wire is wound in the heating cavity;

[0007] When the hot water kettle pours water, if the water outlet temperature sensing piece detects that the pouring water temperature is lower than the preset temperature, the heating wire heats the water flowing through the flow guide pipe through the heating cavity;

[0008] The indicator lights are arranged along the outer edge of the water receiving level, at least one indicator light is arranged at the upper end and the lower end of the water receiving level, and the high sensitivity detector is arranged at the center of the water receiving level.

[0009] When the high sensitivity detector senses that the user is close to receiving water, the indicator light prompts the user in a preset light mode.

[0010] Further, the detection circuit, the outlet temperature sensing circuit, the heating wire control circuit and the indicator light control circuit are provided one by one in correspondence with the indicator light; the outlet temperature sensing circuit, the heating wire control circuit, the detection circuit and the indicator light control circuit are electrically connected with the outlet temperature sensing element, the heating wire, the high-sensitivity detector and the indicator light respectively, and are integrated on the electric control board of the kettle and electrically connected with the microcontroller of the electric control board.

[0011] Further, the detection circuit comprises a resistor R41, a resistor R51, a resistor R52, a resistor R58, a resistor R55, a resistor R57, a capacitor C15, a MOS tube Q7 and a reflective photoelectric switch U6; the reflective photoelectric switch U6 is used as the high-sensitivity detector.

[0012] The collector of the reflective photoelectric switch U6 is electrically connected with the microcontroller, and is electrically connected with a 5V power source after being connected with the resistor R51 and the resistor R41 in sequence; the anode of the reflective photoelectric switch U6 is electrically connected with a 5V power source after being connected with the resistor R52 and the resistor R58 in sequence, the cathode of the reflective photoelectric switch U6 is electrically connected with the drain of the MOS tube Q7, the gate of the MOS tube Q7 is electrically connected with the microcontroller after being connected with the resistor R55 in sequence, the emitter of the reflective photoelectric switch U6 and the source of the MOS tube Q7 are grounded, the resistor R57 is connected in parallel between the gate and the source of the MOS tube Q7, and the capacitor C15 is connected in parallel between the collector and the emitter of the reflective photoelectric switch U6.

[0013] Further, the outlet temperature sensing element is an NTC thermistor, and the outlet temperature sensing circuit comprises a resistor R56, a resistor R49 and a capacitor C11; one end of the resistor R56 is electrically connected with the microcontroller, the other end of the resistor R56 and one end of the resistor R49 are electrically connected with one end of the outlet temperature sensing element, the other end of the outlet temperature sensing element is grounded, the other end of the resistor R49 is connected with a 5V power source, and the capacitor C11 is connected in parallel between the one end of the resistor R56 and the other end of the outlet temperature sensing element.

[0014] Further, the heating wire control circuit comprises a MOS tube Q2, a resistor JR7, a resistor R32 and a resistor R33; one end of the heating wire is connected with a 12V power supply, the other end of the heating wire is electrically connected with a drain electrode of the MOS tube Q2, a gate electrode of the MOS tube Q2 is electrically connected with the microcontroller in series with the resistor JR7 and the resistor R32, a source electrode of the MOS tube Q2 is grounded, one end of the resistor R33 is electrically connected between the resistor JR7 and the resistor R32, and the other end of the resistor R33 is electrically connected with the source electrode of the MOS tube Q2.

[0015] Further, the indicator light is an RGB light D7, and the indicator light control circuit comprises a resistor R60, a triode Q8, a resistor R45 and a resistor R47; a collector electrode of the triode Q8 is electrically connected with a control end of the RGB light D7 in series with the resistor R60, KR, KG and KB ends of the RGB light D7 are electrically connected with the microcontroller, an emitter electrode of the triode Q8 is connected with a 5V power supply, a base electrode of the triode Q8 is electrically connected with the microcontroller in series with the resistor R47, and the resistor R45 is connected between the emitter electrode and the base electrode of the triode Q8 in parallel.

[0016] Further, the pipe caliber of the flow guide pipe decreases along the direction towards the water receiving position.

[0017] The technical scheme provided by the utility model can have the following beneficial effects: in order to realize the constant temperature function, the existing constant temperature kettle usually sets a water storage temperature sensing element (such as an NTC thermistor, a thermocouple or a temperature sensor) in the water storage inner container, which is used for detecting the temperature of the water stored in the water storage inner container, and links the water boiling function of the constant temperature kettle to keep the water temperature constant at a preset temperature; in order to avoid the water boiling function from being frequently started, the water boiling function is usually started again only when the water temperature is much lower than the preset temperature (generally, the temperature difference is about 5 DEG C), so the outlet water temperature is usually lower than the screen display value of the constant temperature kettle.

[0018] To this end, the hot water kettle is improved on the basis of the existing constant temperature hot water kettle, the water outlet is improved, the guide pipe for the user to receive water is used, the heating cavity is arranged along the pipe, the heating wire is wound in the heating cavity, when the water temperature of the water storage inner container is lower than the preset temperature, the water flow is heated by the guide pipe, because the water flow volume is small and the flowability is strong, the water flow temperature can be quickly increased by about 5 DEG C, so that the constant temperature water outlet (i.e. the water outlet temperature is close to the preset temperature) is realized, and the stability of the water outlet temperature is improved; and considering that the water outlet temperature is more stable, if the preset temperature is high, the user can be scalded, therefore, the high sensitivity detector is replaced and arranged at the center of the water receiving position for safety consideration, which is used for quickly sensing whether the user is receiving water, so that the indicator light is quickly turned on to preset the light mode to prompt the user; more importantly, because the indicator light is arranged along the outer edge of the water receiving position, and at least one indicator light is arranged at the upper end and the lower end of the water receiving position, in the dark environment, the user can know the position of the water receiving position through the indicator light, the cup is prevented from being placed incorrectly, and the user is prevented from being scalded by the water outlet. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of a constant temperature water outlet hot water kettle of one embodiment of the utility model.

[0020] Figure 2 It is a constant temperature water outlet hot water kettle circuit principle view as shown in Figure 1 .

[0021] Figure 3 It is a detection circuit circuit view as shown in Figure 2 .

[0022] Figure 4 It is a water outlet temperature sensing circuit circuit view as shown in Figure 2 .

[0023] Figure 5 It is a heating wire control circuit circuit view as shown in Figure 2 .

[0024] Figure 6 It is an indicator light control circuit circuit view as shown in Figure 2 .

[0025] Wherein: high sensitivity detector 1, water outlet temperature sensing piece 2, heating wire 3, hot kettle 4, indicator light 5, water level 41, flow guide pipe 42, heating cavity 421, detection circuit 11, water outlet temperature sensing circuit 21, heating wire control circuit 31, indicator light control circuit 51, resistance R41, resistance R51, resistance R52, resistance R58, resistance R55, resistance R57, capacitor C15, MOS tube Q7, reflective photoelectric switch U6, resistance R56, resistance R49, capacitor C11, MOS tube Q2, resistance RJR7, resistance R32, resistance R33, RGB lamp D7, resistance R60, triode Q8, resistance R45, resistance R47. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as a limitation of the present application.

[0027] In the description of the embodiments of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0028] In the description of the embodiments of the present application, it should be noted that, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0029] The embodiments of the present application are described below in detail. Figures 1 to 6 , a constant temperature water outlet hot kettle.

[0030] A constant temperature water outlet hot water kettle, comprising a high sensitivity detector 1, a water outlet temperature sensing piece 2, a heating wire 3, a hot water kettle 4 and at least two indicator lights 5; the water outlet temperature sensing piece 2 is arranged at the water outlet of the hot water kettle 4, a water receiving level 41 is arranged below the water outlet of the hot water kettle 4, the water outlet of the hot water kettle 4 is provided with a flow guide pipe 42, the pipe opening of the flow guide pipe 42 faces the water receiving level 41, the flow guide pipe 42 is provided with a heating cavity 421 along the pipe thereof, and the heating wire 3 is wound in the heating cavity 421;

[0031] When the hot water kettle 4 is used to pour water, if the water outlet temperature sensing piece 2 detects that the water outlet temperature is lower than the preset temperature, the heating wire 3 heats the water flowing through the flow guide pipe 42 through the heating cavity 421;

[0032] The indicator light 5 is arranged along the outer edge of the water receiving level 41, and at least one indicator light 5 is arranged at the upper end and the lower end of the water receiving level 41, and the high sensitivity detector 1 is arranged at the center of the water receiving level 41;

[0033] When the high sensitivity detector 1 senses that a user approaches to receive water, the indicator light 5 prompts the user in a preset light-on mode.

[0034] As shown in the preferred embodiment of the constant temperature water outlet hot water kettle, Figure 1 In order to realize the constant temperature function, the existing constant temperature hot water kettle usually arranges a water storage temperature sensing piece (such as an NTC thermistor, a thermocouple or a temperature sensor) in the water storage inner container, which is used for detecting the temperature of the water stored in the water storage inner container, and is connected with the water boiling function of the constant temperature hot water kettle to keep the water temperature constant at the preset temperature. In order to avoid the water boiling function from being frequently started, the water boiling function is usually started again only when the water temperature is far below the preset temperature (generally, the temperature difference is about 5 DEG C), so the water outlet temperature is usually lower than the screen display value of the constant temperature hot water kettle.

[0035] To this end, the hot water kettle 4 is improved on the basis of the existing constant temperature hot water kettle, and the outlet is improved. The guide pipe 42 for the user to pour water is provided with a heating cavity 421 along the pipe itself, the heating wire 3 is wound in the heating cavity 421, so that when the water outlet temperature of the water storage inner container is lower than the preset temperature, the water flow is heated by the guide pipe 42, and since the water flow volume through the pipe is small and the flowability is strong, the water flow temperature can be quickly increased by about 5℃, so as to realize constant temperature water outlet (i.e. the water outlet temperature is close to the preset temperature), so as to improve the stability of the water outlet temperature; and considering that the water outlet temperature is more stable, if the preset temperature is high, the user will be scalded, therefore, for safety consideration, the high sensitivity detector 1 is replaced and arranged at the center of the water receiving position 41, which is used to quickly sense whether the user is receiving water, so as to quickly open the indicator lamp 5 to preset the light mode to prompt the user; more importantly, since the indicator lamp 5 is arranged along the outer edge of the water receiving position 41, and at least one indicator lamp 5 is arranged at the upper end and the lower end of the water receiving position 41, in a dark environment, the user can know the position of the water receiving position 41 through the indicator lamp 5, so as to prevent the cup from being placed incorrectly, and cause the user to be scalded by the water outlet.

[0036] Further, the detection circuit 11, the outlet temperature sensing circuit 21, the heating wire control circuit 31 and the indicator lamp control circuit 51 are further included, the indicator lamp control circuit 51 and the indicator lamp 5 are one-to-one corresponding arrangement; the outlet temperature sensing circuit 21, the heating wire control circuit 31, the detection circuit 11 and the indicator lamp control circuit 51 are electrically connected with the outlet temperature sensing element 2, the heating wire 3, the high sensitivity detector 1 and the indicator lamp 5 respectively, and the outlet temperature sensing circuit 21, the heating wire control circuit 31, the detection circuit 11 and the indicator lamp control circuit 51 are integrated on the electric control board of the hot water kettle 4 and electrically connected with the microcontroller of the electric control board.

[0037] In the embodiment, the hot water kettle 4 is used to realize new functions, such as Figure 2 As shown, the detection circuit 11, the outlet temperature sensing circuit 21, the heating wire control circuit 31 and the indicator lamp control circuit 51 are arranged for connecting the outlet temperature sensing element 2, the heating wire 3, the high sensitivity detector 1 and the indicator lamp 5 to the microcontroller (such as MCU) of the electric control board of the hot water kettle 4, so as to realize the constant temperature water outlet and the water receiving prompt function by the microcontroller linkage.

[0038] Further, the detection circuit 11 includes resistors R41, R51, R52, R58, R55, R57, a capacitor C15, a MOS tube Q7 and a reflective photoelectric switch U6; the reflective photoelectric switch U6 is used as the high sensitivity detector 1;

[0039] The collector of the reflective photoelectric switch U6 is electrically connected with the microcontroller, and is electrically connected with the 5V power supply in sequence after being connected with the resistor R51 and the resistor R41; the anode of the reflective photoelectric switch U6 is electrically connected with the 5V power supply in sequence after being connected with the resistor R52 and the resistor R58, the cathode of the reflective photoelectric switch U6 is electrically connected with the drain of the MOS tube Q7, the gate of the MOS tube Q7 is electrically connected with the microcontroller in sequence after being connected with the resistor R55, the emitter of the reflective photoelectric switch U6 and the source of the MOS tube Q7 are grounded, the resistor R57 is connected in parallel between the gate and the source of the MOS tube Q7, and the capacitor C15 is connected in parallel between the collector and the emitter of the reflective photoelectric switch U6.

[0040] As shown in the figure, Figure 3 The detection circuit 11 is composed of the reflective photoelectric switch U6 as the core, and the reflective photoelectric switch U6 is used as a high-sensitivity detector 1 to react more sensitively. When the user approaches the water, the cup blocks the infrared rays to make the infrared rays reflect, and the reflective photoelectric switch U6 can be triggered immediately, and the microcontroller can receive the signal that the user approaches through the HW-AD end. Figure 3 The microcontroller can control whether the detection circuit 11 is started through the HW-KZ end, and the control flexibility of the detection circuit 11 is improved. Figure 3

[0041] Further, the outlet temperature sensing piece 2 is an NTC thermistor, the outlet temperature sensing circuit 21 includes the resistor R56, the resistor R49 and the capacitor C11; one end of the resistor R56 is electrically connected with the microcontroller, the other end of the resistor R56 and one end of the resistor R49 are electrically connected with one end of the outlet temperature sensing piece 2, the other end of the outlet temperature sensing piece 2 is grounded, the other end of the resistor R49 is connected with the 5V power supply, and the capacitor C11 is connected in parallel between the one end of the resistor R56 and the other end of the outlet temperature sensing piece 2.

[0042] As shown in the figure, Figure 4 The outlet temperature sensing circuit 21 is built according to the NTC thermistor, the outlet temperature sensing piece 2 uses the NTC thermistor to detect the outlet temperature, the temperature sensing speed is faster, and the microcontroller can quickly respond to control the heating wire 3 to heat.

[0043] Further, the heating wire control circuit 31 includes the MOS tube Q2, the resistor JR7, the resistor R32 and the resistor R33; one end of the heating wire 3 is connected with the 12V power supply, the other end of the heating wire 3 is electrically connected with the drain of the MOS tube Q2, the gate of the MOS tube Q2 is electrically connected with the microcontroller in sequence after being connected with the resistor JR7 and the resistor R32, the source of the MOS tube Q2 is grounded, one end of the resistor R33 is electrically connected between the resistor JR7 and the resistor R32, and the other end of the resistor R33 is electrically connected with the source of the MOS tube Q2.

[0044] As shown in the figure, Figure 5 ​As shown in the figure, the heating wire control circuit 31 is composed of MOS tube Q2, resistance JR7, resistance R32 and resistance R33, and is controlled by the microcontroller to switch the heating wire 3, and is used in cooperation with the outlet temperature sensing circuit 21.

[0045] Further, the indicator light 5 is an RGB lamp D7, and the indicator light control circuit 51 comprises resistance R60, triode Q8, resistance R45 and resistance R47; the collector of the triode Q8 is connected with the control end of the RGB lamp D7 in series with the resistance R60, the KR end, the KG end and the KB end of the RGB lamp D7 are connected with the microcontroller, the emitter of the triode Q8 is connected with the 5V power supply, the base of the triode Q8 is connected with the microcontroller in series with the resistance R47, and the resistance R45 is connected between the emitter and the base of the triode Q8 in parallel.

[0046] In the embodiment, as shown in the figure, Figure 6 In order to enrich the preset lighting modes of the indicator light 5, the indicator light 5 is preferably an RGB lamp D7, and the indicator light control circuit 51 is composed of resistance R60, triode Q8, resistance R45 and resistance R47 to form a switch circuit of the RGB lamp D7 and is controlled by the microcontroller, and meanwhile the RGB lamp D7 is controlled by the microcontroller to select R, G and B three colors, so that the single indicator light 5 can be controlled by the microcontroller to light in multiple modes (such as lamp color, flashing rule, etc.), and multiple indicator lights 5 are controlled by the microcontroller, thereby greatly enriching the preset lighting modes.

[0047] Further, the pipe diameter of the flow guide pipe 42 is gradually reduced along the direction towards the water receiving position 41.

[0048] In the embodiment, in order to ensure that the outlet water temperature can be increased to the preset temperature, or when the water boiling function of the kettle 4 is restarted and the boiling water temperature is greatly different from the preset temperature, the pipe diameter of the flow guide pipe 42 is preferably set to be gradually reduced along the direction towards the water receiving position 41, so as to reduce the outlet water flow rate, increase the water flow residence time in the flow guide pipe 42, and then fully heat the water flow, so that the water temperature is increased to the preset temperature, and the purpose of constant temperature outlet water is achieved.

[0049] Other components and operations of the kettle for constant temperature outlet water according to the embodiment of the utility model are known to those skilled in the art, and will not be described in detail here.

[0050] In the description of the present specification, the description referring to the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A kettle with constant temperature water output, characterized by: The invention comprises a high-sensitivity detector, a water outlet temperature sensor, a heating wire, a kettle and at least two indicator lights; the water outlet temperature sensor is arranged at the water outlet of the kettle, a water receiving point is arranged below the water outlet of the kettle, a guide pipe is arranged at the water outlet of the kettle, the pipe mouth of the guide pipe faces the water receiving point, a heating chamber is arranged along the guide pipe, and the heating wire is wound in the heating chamber; When the kettle is discharging water, if the outlet temperature sensing element detects that the outlet water temperature is lower than a preset temperature, the heating wire heats the water flowing through the guide pipe through the heating cavity; The indicator light is arranged along the outer edge of the water receiving position, and at least one indicator light is arranged at the upper end and the lower end of the water receiving position, and the high-sensitivity detector is arranged at the center of the water receiving position; When the highly sensitive detector senses that the user is approaching the receiving water, the indicator light will light up in a preset manner to prompt the user.

2. A kettle with constant temperature water output according to claim 1, characterized in that: It also includes a detection circuit, a water outlet temperature sensing circuit, a heating wire control circuit and an indicator light control circuit, and the indicator light control circuit and the indicator light are arranged in a one-to-one correspondence; the water outlet temperature sensing circuit, the heating wire control circuit, the detection circuit and the indicator light control circuit are electrically connected to the water outlet temperature sensing component, the heating wire, the high-sensitivity detector and the indicator light respectively, and the water outlet temperature sensing circuit, the heating wire control circuit, the detection circuit and the indicator light control circuit are all integrated into the electronic control board of the kettle and electrically connected to the microcontroller of the electronic control board.

3. A kettle with constant temperature water output according to claim 2, characterized in that: The detection circuit includes a resistor R41, a resistor R51, a resistor R52, a resistor R58, a resistor R55, a resistor R57, a capacitor C15, a MOS transistor Q7 and a reflective photoelectric switch U6; the reflective photoelectric switch U6 serves as the high-sensitivity detector; The collector of the reflective photoelectric switch U6 is electrically connected to the microcontroller, and is connected in series with the resistor R51 and the resistor R41 in sequence, and then electrically connected to a 5V power supply; the anode of the reflective photoelectric switch U6 is connected in series with the resistor R52 and the resistor R58 in sequence, and then electrically connected to a 5V power supply; the cathode of the reflective photoelectric switch U6 is electrically connected to the drain of the MOS transistor Q7, and the gate of the MOS transistor Q7 is connected in series with the resistor R55, and then electrically connected to the microcontroller; the emitter of the reflective photoelectric switch U6 and the source of the MOS transistor Q7 are both grounded; the resistor R57 is connected in parallel between the gate and source of the MOS transistor Q7; and the capacitor C15 is connected in parallel between the collector and emitter of the reflective photoelectric switch U6.

4. A kettle with constant temperature water output according to claim 2, characterized in that: The water outlet temperature sensing element is an NTC thermistor, and the water outlet temperature sensing circuit includes a resistor R56, a resistor R49 and a capacitor C11; one end of the resistor R56 is electrically connected to the microcontroller, the other end of the resistor R56 and one end of the resistor R49 are both electrically connected to one end of the water outlet temperature sensing element, the other end of the water outlet temperature sensing element is grounded, the other end of the resistor R49 is connected to a 5V power supply, and the capacitor C11 is connected in parallel between one end of the resistor R56 and the other end of the water outlet temperature sensing element.

5. The kettle with constant temperature water output according to claim 2, characterized in that: The heating wire control circuit includes a MOS transistor Q2, a resistor JR7, a resistor R32, and a resistor R33; one end of the heating wire is connected to a 12V power supply, the other end of the heating wire is electrically connected to the drain of the MOS transistor Q2, the gate of the MOS transistor Q2 is connected in series with the resistor JR7 and the resistor R32, and then is electrically connected to the microcontroller, the source of the MOS transistor Q2 is grounded, one end of the resistor R33 is electrically connected between the resistor JR7 and the resistor R32, and the other end of the resistor R33 is electrically connected to the source of the MOS transistor Q2.

6. A kettle with constant temperature water output according to claim 2, characterized in that: The indicator light is an RGB lamp D7, and the indicator light control circuit includes a resistor R60, a transistor Q8, a resistor R45 and a resistor R47; the collector of the transistor Q8 is connected in series with the resistor R60 and then electrically connected to the control end of the RGB lamp D7, the KR end, the KG end and the KB end of the RGB lamp D7 are all electrically connected to the microcontroller, the emitter of the transistor Q8 is connected to a 5V power supply, the base of the transistor Q8 is connected in series with the resistor R47 and then electrically connected to the microcontroller, and the resistor R45 is connected in parallel between the emitter and the base of the transistor Q8.

7. The kettle with constant temperature water output according to claim 1, characterized in that: The pipe diameter of the guide pipe decreases from large to small along the direction toward the water receiving position.

Images