A maternal and infant water device capable of reducing the temperature difference of water outlet

Abstract

The invention discloses a maternal and infant water-using equipment for reducing the outlet water temperature difference, and relates to the technical field of maternal and infant products, comprising a kettle and a water-boiling base; the water-boiling base is provided with a first electrically-controlled conduction valve, a second electrically-controlled conduction valve, a controller, a circulation pipeline, and a water inlet pipeline, a water pump, a water outlet pipeline, and a water outlet nozzle which are connected in sequence, and the water pump is connected with the kettle through the water inlet pipeline; the first electrically-controlled conduction valve is installed on the water outlet pipeline, and the water outlet of the water pump is also connected with the kettle through the circulation pipeline, the second electrically-controlled conduction valve is installed on the circulation pipeline, and the controller is configured with a circulation temperature return control mode and a water outlet control mode; through the above-mentioned design, the maternal and infant water-using equipment can pump the water at the water outlet back to the kettle, so as to avoid the situation where the water temperature at the water outlet and the water temperature of the kettle are greatly different due to long-term non-use of water, and is more conducive to milk adjustment and feeding.

Description

Technical Field

[0001] The present invention relates to the technical field of maternal and infant products, and in particular to a maternal and infant water use device capable of reducing the temperature difference of outlet water. Background Art

[0002] In the maternal and infant products industry, equipment for heating water is relatively common, such as a milk mixer. The milk mixer uses a water-boiling base and a kettle to first boil the water, and then keeps the water at a constant temperature of, for example, 45°-50°, so that users can get warm water that is very friendly to babies when they need to prepare milk.

[0003] For the purpose of portable water pouring or quantitative water discharge, some users do not like to pour water directly from the spout of the kettle, but instead use a kettle base that can be connected to the kettle for electrically controlled water discharge. The kettle base is usually equipped with a water pump and a water outlet pipe, and some are also equipped with a solenoid valve, a water flow sensor, etc. Through electronic control, the water in the kettle can be pumped by the water pump device in the kettle base and discharged from a water outlet on the kettle base. Users can place water containers such as milk bottles under the water outlet to fill water.

[0004] The structure is mostly like the "liquid heating container and milk mixer" proposed in the Chinese utility model with announcement number CN214905941U, which includes a base, a kettle body arranged on the base and having a heating chamber, and a heating device located at the bottom of the kettle body, and a drain outlet is provided at the bottom of the heating chamber; a water pump, a drain pipe and a water outlet pipe are provided in the base; one end of the drain pipe is connected to the drain outlet, and the other end is connected to the water inlet end of the water pump; one end of the water outlet pipe is connected to the water outlet end of the water pump, and the other end is connected to the water outlet of the water pump, so as to pump the liquid in the heating chamber to the water outlet, so that the drinking water in the heating chamber can be taken out without using the spout, and the water outlet is provided on the base and located on the right side of the kettle body, that is, the side.

[0005] Although the heating chamber can usually be kept warm by a heating device, for example, at 45°-50°, there will be water remaining in the water outlet pipe, and this part of water is outside the heating chamber. After standing for a period of time, the water in the water outlet pipe and the water in the heating chamber have a more obvious temperature difference. At this time, if the water is taken out by an electrically controlled pump through the water outlet, for example, the user needs to take 150ml of water to make milk, then the room temperature water or low temperature water remaining in the water outlet pipe will be discharged together for mixing. The room temperature water or low temperature water remaining in the water outlet pipe has a greater impact on the overall water outlet temperature, that is, the water used for preparing milk will be obviously lower than the temperature kept warm by the heating chamber.

[0006] For infants with fragile stomachs, drinking milk at a low temperature can easily cause gastrointestinal problems such as diarrhea. Therefore, it is necessary to improve the water supply method of water heating equipment in such maternal and infant products, especially in milk mixers. Summary of the invention

[0007] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mother-infant water equipment for reducing the temperature difference of water outlet, comprising a kettle and a water-boiling base for cooperating with the kettle to boil water; a water pump, a water inlet pipe, a water outlet pipe, a circulation pipe, a water outlet nozzle, a first electrically-controlled conduction valve, a second electrically-controlled conduction valve and a controller are arranged on the water-boiling base; the water inlet of the water pump is connected with the kettle through the water inlet pipe; the water outlet of the water pump is connected with the water outlet nozzle through the water outlet pipe, and a water outlet pipeline is formed from the water outlet of the water pump through the water outlet pipe to the water outlet nozzle; the first electrically-controlled conduction valve is installed on the water outlet pipe, and the first electrically-controlled conduction valve corresponds to a pipeline closing control state for closing the water outlet pipeline and a pipeline opening control state for connecting the water outlet pipeline; the water outlet of the water pump is also connected to the water outlet of the water pump through the circulation pipe. The ring pipe is connected with the kettle, and a circulation pipeline is formed from the water outlet of the water pump through the circulation pipe to the kettle; the second electrically-controlled conduction valve is installed on the circulation pipe, and the second electrically-controlled conduction valve corresponds to a pipeline closing control state for closing the circulation pipe and a pipeline opening control state for conducting the circulation pipe; the controller is configured to have a circulation temperature return control mode and a water outlet control mode; the circulation temperature return control mode is: controlling the water pump to pump water, controlling the first electrically-controlled conduction valve to be in a pipeline closing control state, and controlling the second electrically-controlled conduction valve to be in a pipeline opening control state; the water outlet control mode is: controlling the water pump to pump water, controlling the first electrically-controlled conduction valve to be in a pipeline opening control state, and controlling the second electrically-controlled conduction valve to be in a pipeline closing control state.

[0009] As a further solution of the present invention: a connecting pipe is connected to the water outlet of the water pump; one end of the connecting pipe has a first pipe opening connected to the water outlet, the other end of the connecting pipe has a second pipe opening connected to the water outlet pipe and a third pipe opening connected to the circulation pipe.

[0010] As a further solution of the present invention: a water flow meter for detecting the water flow from one end of the connecting pipe to the other end of the connecting pipe is also installed on the water boiling base, and the signal end of the water flow meter is electrically connected to the signal input end of the controller.

[0011] As a further solution of the present invention: when the controller is running in the circulation temperature return control mode, it calculates the water flow rate flowing through the connecting pipe according to the water flow rate signal obtained by the water flow meter, and exits the circulation temperature return control mode when the water flow rate exceeds a preset circulation water volume threshold.

[0012] As a further solution of the present invention: after running the circulating temperature return control mode for a preset pumping time value, exit the circulating temperature return control mode.

[0013] As a further solution of the present invention: after the last cycle temperature return control is performed, the cycle temperature return control mode is switched to the cycle temperature return control mode after a preset cycle time value to perform the next cycle temperature return control.

[0014] As a further solution of the present invention: a first temperature sensor for detecting the water temperature of the kettle or the water temperature of the water inlet pipe is arranged on the water boiling base, and a third temperature sensor for detecting the room temperature is arranged; the controller receives the temperature detection signal of the first temperature sensor and the temperature detection signal of the third temperature sensor, and when it is judged that the difference between the water temperature detected by the first temperature sensor and the room temperature detected by the third temperature sensor exceeds a preset temperature difference threshold, the controller accelerates the time of the preset cycle time value, so that the preset cycle time value is reduced by a corresponding time acceleration amount, and the time acceleration amount is positively correlated with the value of the temperature difference exceeding the preset temperature difference threshold.

[0015] As a further solution of the present invention: when the controller switches to the water outlet control mode and exits the water outlet control mode after the water outlet control is completed, the time point when the water outlet is completed is used as the starting timing point of the preset cycle time value.

[0016] As a further solution of the present invention: a first temperature sensor for detecting the water temperature of the kettle or the water temperature of the water inlet pipe is provided on the water boiling base, and a second temperature sensor for detecting the water temperature at the connecting pipe is provided; the controller receives the temperature detection signal of the first temperature sensor and the temperature detection signal of the second temperature sensor, and switches to the circulation temperature return control mode when it is determined that the difference between the water temperature detected by the first temperature sensor and the water temperature detected by the second temperature sensor exceeds a preset over-temperature value.

[0017] As a further solution of the present invention: when the controller is in the circulation temperature return control mode, the controller receives the temperature detection signal of the first temperature sensor and the temperature detection signal of the second temperature sensor, and exits the circulation temperature return control mode when it is determined that the difference between the water temperature detected by the first temperature sensor and the water temperature detected by the second temperature sensor is within a preset suitable temperature value.

[0018] Compared with the prior art, the beneficial effect of the present technical solution is as follows: through the above-mentioned design, the mother-infant water equipment can pump the water at the water outlet back to the kettle, thereby avoiding the situation where the water temperature at the water outlet is greatly different from the water temperature of the kettle due to long-term non-use of water, which is more conducive to milk preparation and feeding.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a structural stereogram of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the water-boiling base in the present invention;

[0023] Figure 3 It is a structural cross-sectional view of the present invention;

[0024] Figure 4 yes Figure 3 A schematic diagram of the enlarged local structure at center A;

[0025] Figure 5 is a circuit block diagram of the present invention;

[0026] Figure 6 is another circuit block diagram of the present invention.

[0027] The corresponding reference numerals in the accompanying drawings are described as follows:

[0028] Kettle -1, water boiling base -2, water pump -3, water inlet pipe -4, water outlet pipe -5, circulation pipe -6, first electrically controlled conduction valve -7, second electrically controlled conduction valve -8, controller -9, connecting pipe -10, water flow meter -11, first temperature sensor -12, second temperature sensor -13, third temperature sensor -14, water outlet -15, first water pipe -16, first valve ball -17, first return spring -18, second water pipe -19, first thimble -20. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-6 A maternal and infant water device for reducing the temperature difference of water outlet comprises a kettle 1 and a water-boiling base 2 for boiling water in cooperation with the kettle 1; the water-boiling base 2 is provided with a water pump 3, a water inlet pipe 4, a water outlet pipe 5, a circulation pipe 6, a water outlet nozzle 15, a first electrically controlled conduction valve 7, a second electrically controlled conduction valve 8 and a controller 9. The user can use a container such as a milk bottle to collect water at the water outlet nozzle 15.

[0031] The water inlet of the water pump 3 is connected to the kettle 1 through the water inlet pipe 4. The water outlet of the water pump 3 is connected to the water outlet nozzle 15 through the water outlet pipe 5, and a water outlet pipeline is formed from the water outlet of the water pump 3 to the water outlet nozzle 15 via the water outlet pipe 5; the first electrically controlled conduction valve 7 is installed on the water outlet pipe 5, and the first electrically controlled conduction valve 7 corresponds to a pipeline closing control state that closes the water outlet pipeline and a pipeline opening control state that conducts the water outlet pipeline. In some embodiments, the first electrically controlled conduction valve 7 can be a solenoid valve, which is controlled by the controller 9.

[0032] The water outlet of the water pump 3 is also connected to the kettle 1 through the circulation pipe 6, and a circulation pipeline is formed from the water outlet of the water pump 3 to the kettle 1 through the circulation pipe 6; the second electrically controlled conduction valve 8 is installed on the circulation pipe 6, and the second electrically controlled conduction valve 8 has a pipeline closing control state for closing the circulation pipe and a pipeline opening control state for conducting the circulation pipe. In some embodiments, the second electrically controlled conduction valve 8 can be a solenoid valve, which is controlled by the controller 9.

[0033] The controller 9 is configured to have a circulation temperature return control mode and a water outlet control mode. The circulation temperature return control mode is: controlling the water pump 3 to pump water, controlling the first electrically controlled conduction valve 7 to be in a pipeline closed control state, and controlling the second electrically controlled conduction valve 8 to be in a pipeline open control state, that is, the water pump 3 can pump water back to the kettle 1 through the circulation pipeline 6. The water outlet control mode is: controlling the water pump 3 to pump water, controlling the first electrically controlled conduction valve 7 to be in a pipeline open control state, and controlling the second electrically controlled conduction valve 8 to be in a pipeline closed control state, that is, the water pump 3 can pump water through the water outlet pipeline 5 to the water outlet 15 to supply water to the user.

[0034] Through the above design, the mother-infant water device can pump the water at the water outlet back to the kettle 1, avoiding the situation where the water temperature at the water outlet is greatly different from the water temperature in the kettle due to long-term water non-use, which is more conducive to milk feeding.

[0035] In some embodiments, the kettle 1 can be removed from the water-boiling base 2. The kettle 1 and the water-boiling base 2 can be positioned and electrically connected via a common coupler, and the kettle 1 has a corresponding electric heating plate.

[0036] like Figure 4 As shown, in some embodiments, the kettle 1 has a first water conduit 16, a first valve ball 17 and a first return spring 18, and the water-boiling base 2 has a corresponding second water conduit 19, and the second water conduit 19 has a first thimble 20 corresponding to the first valve ball 17. When the kettle 1 is positioned and placed on the water-boiling base 2, and the coupler of the kettle 1 is connected with the coupler of the water-boiling base 2, the second water conduit 19 is correspondingly engaged with the first water conduit 16, and the first thimble 20 pushes the first valve ball 17 to make the first valve ball 17 break away from the blockage of the first water conduit 16, that is, the second water conduit 19 can be connected to the first water conduit 16, the first water conduit 16 is correspondingly connected to the inside of the kettle 1, and the second water conduit 19 is correspondingly connected to the water inlet pipe 4, so that the water inlet pipe 4 can be connected to the kettle 1.

[0037] When the kettle 1 is removed, the first ejector pin 20 is disengaged from the ejection of the first valve ball 17 , and the first valve ball 17 continues to block the first water conduit 16 under the action of the first return spring 18 , thereby preventing the kettle 1 from leaking.

[0038] In some embodiments, the kettle has a third water conduit, a second valve ball, and a second return spring, and the water-boiling base has a corresponding fourth water conduit, and the fourth water conduit has a second push pin corresponding to the second valve ball. When the kettle is positioned and placed on the water-boiling base, and the coupler of the kettle is connected to the coupler of the water-boiling base, the fourth water conduit is correspondingly engaged with the third water conduit, and the second push pin pushes the second valve ball accordingly, so that the second valve ball is separated from the blockage of the third water conduit, that is, the fourth water conduit can be connected to the third water conduit, the third water conduit is correspondingly connected to the inside of the kettle, and the fourth water conduit is correspondingly connected to the circulation pipeline, so that the circulation pipeline can be connected to the kettle.

[0039] When the kettle is removed, the second ejector pin is disengaged from the ejection of the second valve ball, and the second valve ball continues to block the third water conduit under the action of the second return spring to prevent the kettle from leaking.

[0040] Preferably, a connecting pipe 10 is connected to the water outlet of the water pump 3; one end of the connecting pipe 10 has a first pipe opening connected to the water outlet, and the other end of the connecting pipe 10 has a second pipe opening connected to the water outlet pipe 5 and a third pipe opening connected to the circulation pipe 6.

[0041] Preferably, a water flow meter 11 for detecting the water flow from one end of the communication pipe 10 to the other end of the communication pipe 10 is also installed on the water boiling base 2 , and a signal end of the water flow meter 11 is electrically connected to a signal input end of the controller 9 .

[0042] In some embodiments, the controller 9 is further configured to have a standby mode, and enters the standby mode after exiting the circulating temperature recovery control mode and / or exiting the water output control mode.

[0043] The standby mode is: controlling the water pump 3 to stop pumping water, controlling the first electrically controlled conduction valve 7 to be in a pipeline closing control state, and controlling the second electrically controlled conduction valve 8 to be in a pipeline closing control state.

[0044] In this embodiment, when the controller 9 is in the circulation temperature return control mode, it calculates the water flow rate flowing through the communication pipe 10 according to the water flow rate signal obtained by the water flow meter 11, and exits the circulation temperature return control mode when the water flow rate exceeds the preset circulation water volume threshold. The return water volume is stabilized each time by quantitative return water, which is more conducive to the stable control of the outlet water temperature after the circulation return water.

[0045] The preset circulating water volume threshold can be reasonably set according to data such as the water capacity of the water inlet pipe 4, the water capacity of the circulation pipe 6, the water capacity of the water outlet pipe 5, and the position of the first electrically controlled conduction valve 7 controlling the opening / closing of the water outlet pipe.

[0046] In this embodiment, after the preset pumping time value of the circulating temperature return control mode is run, the circulating temperature return control mode is exited. The preset pumping time value can be reasonably set according to the size of each pipeline, the pumping speed of the water pump and other data. The duration of each pumping backflow is stabilized by the pumping timing method, and the user can judge when to end the pumping backflow according to the preset pumping time value.

[0047] In this embodiment, after the last cycle temperature return control is performed, the cycle temperature return control mode is switched to the next cycle temperature return control after a preset cycle time value. By setting the preset cycle time value, the maternal and infant water equipment can actively perform water return control. The preset cycle time value is, for example, 10 minutes.

[0048] See also Figure 6Furthermore, the water boiling base 2 is provided with a first temperature sensor 12 for detecting the water temperature of the kettle or the water temperature of the water inlet pipe, and a third temperature sensor 14 for detecting the room temperature. The controller 9 receives the temperature detection signal of the first temperature sensor 12 and the temperature detection signal of the third temperature sensor 14, and when it is determined that the difference between the water temperature detected by the first temperature sensor 12 and the room temperature detected by the third temperature sensor 14 exceeds a preset temperature difference threshold, the preset cycle time value is accelerated, so that the preset cycle time value is reduced by a corresponding time acceleration amount, and the time acceleration amount is positively correlated with the value of the temperature difference exceeding the preset temperature difference threshold.

[0049] The greater the difference between the water temperature and the room temperature, the faster the water temperature changes per unit time. Taking the water in the water outlet pipe at 45°C as an example, the water temperature change rate of the water outlet pipe is different in summer and winter. The water temperature change of the water outlet pipe at 30°C in summer is significantly lower than the water temperature change of the water outlet pipe at 5°C in winter. Through the above-mentioned first temperature sensor, the first temperature sensor, and the above-mentioned time acceleration, the mother and baby water use equipment can adjust the time interval of the next cycle temperature return control according to the actual temperature difference, avoiding the situation where the fixed time interval causes the water temperature difference between the water outlet pipe and the kettle to be too large.

[0050] Take the preset cycle time value of 10 minutes and the preset temperature difference threshold value of 12 degrees as an example: when the water temperature in the kettle is detected to be 45°C and the room temperature is detected to be 30°C, that is, the value exceeding the preset temperature difference threshold value is 3°C, and the time acceleration amount corresponds to A1min. After the last cycle temperature return control, the interval is (10-A1) minutes and the cycle temperature return control mode is switched to the next cycle temperature return control; when the water temperature in the kettle is detected to be 45°C and the room temperature is detected to be 5°C, that is, the value exceeding the preset temperature difference threshold value is 28°C, and the time acceleration amount corresponds to A2min. After the last cycle temperature return control, the interval is (10-A2) minutes and the cycle temperature return control mode is switched to the next cycle temperature return control. A1 is less than A2, that is, 10-A1 is greater than 10-A2.

[0051] In this embodiment, when the controller 9 switches to the water outlet control mode and exits the water outlet control mode after the water outlet control is completed, the time point when the water outlet is completed is used as the starting timing point of the preset cycle time value.

[0052] See also Figure 5In this embodiment, the water-boiling base 2 is provided with a first temperature sensor 12 for detecting the water temperature of the kettle or the water temperature of the water inlet pipe, and a second temperature sensor 13 for detecting the water temperature at the connecting pipe 10; the controller 9 receives the temperature detection signal of the first temperature sensor 12 and the temperature detection signal of the second temperature sensor 13, and switches to the circulation temperature return control mode when it is determined that the difference between the water temperature detected by the first temperature sensor 12 and the water temperature detected by the second temperature sensor 13 exceeds the preset over-temperature value. In some embodiments, the preset over-temperature value can be any value between 1°C and 10°C, for example, a difference of 5°C.

[0053] When the controller 9 is in the circulation temperature return control mode, the controller 9 receives the temperature detection signal of the first temperature sensor 12 and the temperature detection signal of the second temperature sensor 13, and exits the circulation temperature return control mode when it is determined that the difference between the water temperature detected by the first temperature sensor 12 and the water temperature detected by the second temperature sensor 13 is within the preset suitable temperature value. The circulation water return can be intelligently started and stopped through temperature detection, so that the temperature return control can be performed more timely and the temperature return can be performed more fully.

[0054] In some embodiments, the preset suitable temperature value may be any value within the range of 0.1°C to 3°C, wherein the preset suitable temperature value is smaller than the preset over-temperature value. For example, the preset suitable temperature value is 1°C different, and the preset over-temperature value is 5°C different.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A mother-infant water device for reducing the temperature difference of water outlet, characterized in that: It comprises a kettle and a water-boiling base for boiling water in cooperation with the kettle; the water-boiling base is provided with a water pump, a water inlet pipe, a water outlet pipe, a circulation pipe, a water outlet nozzle, a first electrically controlled conduction valve, a second electrically controlled conduction valve and a controller; The water inlet of the water pump is connected with the kettle through a water inlet pipe; The water outlet of the water pump is connected to the water outlet nozzle through the water outlet pipe, and a water outlet pipeline is formed from the water outlet of the water pump to the water outlet nozzle via the water outlet pipe; the first electrically controlled conduction valve is installed on the water outlet pipe, and the first electrically controlled conduction valve has a pipeline closing control state for closing the water outlet pipe and a pipeline opening control state for conducting the water outlet pipe; The water outlet of the water pump is also connected to the kettle through the circulation pipeline, and a circulation pipeline is formed from the water outlet of the water pump to the kettle via the circulation pipeline; the second electrically controlled conduction valve is installed on the circulation pipeline, and the second electrically controlled conduction valve has a pipeline closing control state for closing the circulation pipeline and a pipeline opening control state for conducting the circulation pipeline; The controller is configured to have a circulating temperature return control mode and a water outlet control mode; The circulating temperature return control mode is: controlling the water pump to pump water, controlling the first electrically controlled conduction valve to be in a pipeline closing control state, and controlling the second electrically controlled conduction valve to be in a pipeline opening control state; The water outlet control mode is: controlling the water pump to pump water, controlling the first electrically controlled conduction valve to be in a pipeline open control state, and controlling the second electrically controlled conduction valve to be in a pipeline closed control state; The water outlet of the water pump is connected to a connecting pipe; one end of the connecting pipe has a first pipe opening connected to the water outlet, and the other end of the connecting pipe has a second pipe opening connected to the water outlet pipe and a third pipe opening connected to the circulation pipe; The water-boiling base is provided with a first temperature sensor for detecting the water temperature of the kettle or the water temperature of the water inlet pipe, and a second temperature sensor for detecting the water temperature at the connecting pipe; The controller receives the temperature detection signal of the first temperature sensor and the temperature detection signal of the second temperature sensor, and switches to the circulation temperature return control mode when it is determined that the difference between the water temperature detected by the first temperature sensor and the water temperature detected by the second temperature sensor exceeds a preset over-temperature value.

2. The mother-infant water equipment according to claim 1, characterized in that: A water flow meter for detecting the water flow from one end of the communication pipe to the other end of the communication pipe is also installed on the water heating base, and the signal end of the water flow meter is electrically connected to the signal input end of the controller.

3. The mother-infant water equipment according to claim 2, characterized in that: When the controller is running in the circulation temperature return control mode, it calculates the water flow rate flowing through the connecting pipe according to the water flow signal obtained by the water flow meter, and exits the circulation temperature return control mode when the water flow rate exceeds the preset circulation water volume threshold.

4. The mother-infant water equipment according to claim 1, characterized in that: After running the circulating temperature return control mode for the preset pumping time value, exit the circulating temperature return control mode.

5. The mother-infant water equipment according to any one of claims 1 to 4, characterized in that: When the controller is in the circulation temperature return control mode, the controller receives the temperature detection signal of the first temperature sensor and the temperature detection signal of the second temperature sensor, and exits the circulation temperature return control mode when it is determined that the difference between the water temperature detected by the first temperature sensor and the water temperature detected by the second temperature sensor is within a preset suitable temperature value.

6. The mother-infant water equipment according to any one of claims 1 to 4, characterized in that: After the last cycle temperature return control is performed, the preset cycle time value is interval and the cycle temperature return control mode is switched to the next cycle temperature return control.

7. The mother-infant water equipment according to claim 6, characterized in that: A third temperature sensor for detecting room temperature is arranged on the water-boiling base; The controller receives the temperature detection signal of the first temperature sensor and the temperature detection signal of the third temperature sensor, and when it is determined that the difference between the water temperature detected by the first temperature sensor and the room temperature detected by the third temperature sensor exceeds a preset temperature difference threshold, the controller accelerates the preset cycle time value so that the preset cycle time value is reduced by a corresponding time acceleration amount, and the time acceleration amount is positively correlated with the value of the temperature difference exceeding the preset temperature difference threshold.

8. The mother-infant water equipment according to claim 6, characterized in that: When the controller switches to the water outlet control mode and exits the water outlet control mode after the water outlet control is completed, the time point when the water outlet is completed is used as the starting timing point of the preset cycle time value.

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