Device capable of emptying residual water
By designing a device that can drain residual water, and utilizing the combination of a solenoid valve and a water pump, the problem of residual water in the water outlet pipe of the formula maker is solved, achieving precise temperature control and bacterial prevention, and ensuring the safety of formula preparation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN SHUNDE NARTISAN ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-12
AI Technical Summary
When using a formula maker, residual water in the water outlet can affect the temperature of the warm water, leading to uneven mixing of the formula and potentially the growth of bacteria, which can harm the baby's health.
A device for draining residual water has been designed, comprising a kettle body, a housing, a solenoid valve, a water pump, and a control board. By switching the mode of the solenoid valve and operating the water pump, residual water in the pipe can be extracted and drained, ensuring that the pipe is dry and preventing bacterial growth.
Effectively draining residual water from the pipes maintains precise water temperature, prevents bacterial growth, and ensures the temperature and safety of milk powder preparation.
Smart Images

Figure CN224219947U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of formula maker technology, and in particular to a device that can drain residual water. Background Technology
[0002] When using a formula maker, after stopping the water flow after one preparation, residual water remains in the water outlet. This residual water cools and lingers in the outlet, and when preparing the formula a second time, before adding warm water to the bottle, this residual water will fall into the bottle first, or it may mix with the warm water and enter the bottle, lowering the temperature of the warm water and affecting the preparation of the formula. Furthermore, the residual water in the outlet can easily breed bacteria, and if the baby drinks the formula prepared again, it may cause diarrhea. Utility Model Content
[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes a device capable of draining residual water.
[0004] This utility model embodiment provides a device for draining residual water, the device for draining residual water includes:
[0005] The body of the pot;
[0006] The housing includes a solenoid valve, a water pump, and a control board. The kettle body is detachably connected to the housing. The control board is electrically connected to the solenoid valve and the water pump. The inlet of the solenoid valve is connected to the outlet of the kettle body, and the air inlet of the solenoid valve is connected to the outside. The inlet of the water pump is connected to the outlet of the solenoid valve through a first pipe, and the outlet of the water pump is connected to a second pipe.
[0007] The solenoid valve can switch between a first mode and a second mode, wherein:
[0008] When the solenoid valve is in the first mode, the water inlet and water outlet of the solenoid valve are open, and the air inlet of the solenoid valve is closed.
[0009] When the solenoid valve is in the second mode, the air inlet and water outlet of the solenoid valve are open, and the water inlet of the solenoid valve is closed.
[0010] According to some embodiments of the present invention, the housing is provided with a first coupler, the kettle body is provided with a second coupler, the first coupler and the second coupler can be plugged into each other to connect the kettle body and the housing, and the first coupler is electrically connected to the control board.
[0011] According to some embodiments of the present invention, the kettle body is provided with a temperature sensor, the temperature sensor is electrically connected to the second coupler, and the temperature measuring head of the temperature sensor is inserted into the kettle body.
[0012] According to some embodiments of the present invention, the kettle body is provided with a heating element, the heating element is located at the bottom of the kettle body, and the second coupler is electrically connected to the heating element.
[0013] According to some embodiments of the present invention, the heating element is tubular, and both ends of the heating element extend circumferentially along the kettle body.
[0014] According to some embodiments of the present invention, a heating plate is provided at the bottom of the inner cavity of the kettle, and the upper side of the heating element is attached to the lower end surface of the heating plate.
[0015] According to some embodiments of the present invention, the kettle body includes a kettle body and a base, the kettle body is located above the base, the kettle body and the base are fixedly connected, the second coupler is installed on the base, and the inner cavity of the kettle body forms a water storage cavity.
[0016] According to some embodiments of the present invention, the device for draining residual water further includes a third pipe, one end of which is connected to the outlet of the water storage chamber, and the other end of which is connected to the inlet of the solenoid valve.
[0017] According to some embodiments of the present invention, the pot body further includes a pot lid, which is located above the pot body and is detachably connected to the pot body.
[0018] According to some embodiments of the present invention, the kettle body is provided with a handle, which is fixedly installed on the outer peripheral wall of the kettle body.
[0019] The device for draining residual water according to the embodiments of the present invention has at least the following technical effects:
[0020] 1. When brewing is needed, the control panel switches the solenoid valve to the first mode, opening both the water inlet and outlet, and closing the air inlet. The water pump starts to draw liquid from the kettle. The liquid enters the solenoid valve through the water inlet and exits through the outlet, entering the first pipe. The liquid in the first pipe is then drawn into the second pipe by the pump, and finally discharged through the second pipe. The pump then shuts off, leaving residual water in both the first and second pipes.
[0021] 2. When it is necessary to drain the residual water, the control panel controls the solenoid valve to switch to the second mode. The air inlet and water outlet of the solenoid valve are opened, and the water inlet of the solenoid valve is closed. After the water pump starts, the outside gas enters the solenoid valve through the air inlet and leaves the solenoid valve through the water outlet and enters the first pipe. The residual water and gas in the first pipe are drawn into the second pipe by the water pump and discharged through the second pipe, so that the residual water in the first pipe and the second pipe is emptied.
[0022] 3. This device that can drain residual water can drain the residual water in the pipe, prevent bacteria from growing in the pipe, and ensure accurate water temperature.
[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0025] Figure 1 This is a schematic diagram of the structure of a device for draining residual water according to some embodiments of the present invention;
[0026] Figure 2 This is a schematic diagram of the structure of a device for draining residual water according to some embodiments of the present invention;
[0027] Figure 3 This is an exploded view of a device for draining residual water according to some embodiments of the present invention;
[0028] Figure 4 This is a partial structural schematic diagram of a device for draining residual water according to some embodiments of this utility model;
[0029] Figure 5 This is a partial structural schematic diagram of a device for draining residual water according to some embodiments of this utility model;
[0030] Figure 6 This is a partial structural schematic diagram of a device for draining residual water according to some embodiments of this utility model.
[0031] Icon labels:
[0032] Kettle body 100; Second coupler 110; Temperature sensor 120; Heating element 130; Heating plate 140; Kettle body 151; Base 152; Kettle lid 160; Handle 170; Container 180;
[0033] Housing 200; Solenoid valve 210; Water pump 220; Control board 230; First coupler 240;
[0034] First pipe 310; second pipe 320; third pipe 330. Detailed Implementation
[0035] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0037] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0039] The embodiments of this utility model will be further described below with reference to the accompanying drawings.
[0040] According to some embodiments of this utility model, refer to Figures 1 to 6The device for draining residual water includes a kettle body 100 and a housing 200. The housing 200 is equipped with a solenoid valve 210, a water pump 220, and a control board 230. The kettle body 100 is detachably connected to the housing 200. The control board 230 is electrically connected to both the solenoid valve 210 and the water pump 220. The solenoid valve 210 has a water inlet, an air inlet, and a water outlet. The water inlet of the solenoid valve 210 is connected to the water outlet of the kettle body 100, and the air inlet of the solenoid valve 210 is connected to the outside environment. The water inlet of the water pump 220 is connected to the water outlet of the solenoid valve 210 via a first pipe 310, and the water outlet of the water pump 220 is connected to a second pipe 320. The solenoid valve 210 can switch between a first mode and a second mode, wherein: when the solenoid valve 210 is in the first mode, the water inlet and water outlet of the solenoid valve 210 are open, and the air inlet of the solenoid valve 210 is closed; when the solenoid valve 210 is in the second mode, the air inlet and water outlet of the solenoid valve 210 are open, and the water inlet of the solenoid valve 210 is closed.
[0041] When brewing is required, the control panel 230 controls the solenoid valve 210 to switch to the first mode, opening the water inlet and outlet of the solenoid valve 210 and closing the air inlet. The water pump 220 starts to draw liquid from the kettle body 100. The liquid in the kettle body 100 enters the solenoid valve 210 through the water inlet and exits through the water outlet, entering the first pipe 310. The liquid in the first pipe 310 is drawn into the second pipe 320 by the operation of the water pump 220, and then discharged through the second pipe 320 into the container 180. Finally, the water pump 220 is turned off, leaving residual water in the first pipe 310 and the second pipe 320.
[0042] When it is necessary to drain the residual water, the control board 230 controls the solenoid valve 210 to switch to the second mode. The air inlet and water outlet of the solenoid valve 210 are opened, and the water inlet of the solenoid valve 210 is closed. After the water pump 220 is started, the outside gas enters the solenoid valve 210 through the air inlet and leaves the solenoid valve 210 through the water outlet and enters the first pipe 310. The residual water and gas in the first pipe 310 are drawn into the second pipe 320 by the water pump 220 and discharged through the second pipe 320. The residual water in the second pipe 320 is also discharged, so that the residual water in the first pipe 310 and the second pipe 320 is emptied.
[0043] This device, capable of draining residual water, can remove residual water from the pipes, ensuring that the first pipe 310 and the second pipe 320 remain dry. This effectively prevents bacterial growth caused by residual water in the pipes, cutting off the humid environment needed by harmful microorganisms. Furthermore, it prevents fresh warm water from mixing with residual water, thus avoiding any impact on the water temperature and ensuring accurate outlet water temperature.
[0044] Preferably, the control board 230 can be a single circuit board, or it can be composed of two or more circuit boards connected by an electrical connection assembly.
[0045] According to some embodiments of this utility model, refer to Figure 4 and Figure 5 The housing 200 is equipped with a first coupler 240, and the kettle body 100 is equipped with a second coupler 110. The first coupler 240 and the second coupler 110 can be plugged into each other to connect the kettle body 100 and the housing 200. The first coupler 240 is electrically connected to the control board 230. The cooperative design of the first coupler 240 and the second coupler 110 enables quick assembly and disassembly of the kettle body 100 and the housing 200, facilitating separate cleaning and maintenance of the kettle body 100 and the housing 200, while ensuring the stability and safety of the electrical connection.
[0046] According to some embodiments of this utility model, refer to Figure 5 and Figure 6 The kettle body 100 is equipped with a temperature sensor 120, which is electrically connected to a second coupler 110. The temperature sensor 120's probe is inserted into the kettle body 100. The probe is encapsulated in food-grade stainless steel and sealed to the kettle body 100 with a silicone sealing ring for waterproofing, eliminating the risk of leakage. The temperature sensor 120 is used to detect the water temperature inside the kettle body 100. Preferably, the kettle body 100 is equipped with a heating element 130, located at the bottom of the kettle body 100, and the second coupler 110 is electrically connected to the heating element 130. The control board 230 can be electrically connected to the heating element 130 via the first coupler 240 and the second coupler 110, thereby controlling the heating element 130 to heat the water inside the kettle body 100. Combined with the temperature sensor 120, this allows the water inside the kettle body 100 to be precisely heated to a specified temperature. The electrical connection between the heating element 130 and the second coupler 110 uses high-temperature resistant silver alloy contacts to ensure stable high-current transmission. In addition, the integrated design of the heating element 130 and the kettle body 100 avoids the common water leakage problem of separate heating plates.
[0047] Preferably, the water pump 220 is a diaphragm water pump 220, the diaphragm of which is made of food-grade silicone material, and its pump chamber is physically separated from the drive motor by an isolation chamber. The control board 230 has a built-in flow control algorithm, which dynamically controls the stroke frequency of the diaphragm water pump 220 by adjusting the PWM duty cycle based on the user-set target value of water output, and forms a closed-loop control system with the temperature sensor 120 and the solenoid valve 210 to accurately control the pumping volume.
[0048] Preferred, refer to Figure 6The heating element 130 is tubular, and its two ends extend circumferentially along the kettle body 100, making it curved. This increases the contact area between the heating element 130 and the kettle body 100, thereby increasing heating efficiency. Combined with a coupler power supply, it achieves rapid heating, avoids localized overheating, improves energy utilization, achieves uniform heating, prevents cold spots at the bottom of the kettle body 100, and ensures consistent water temperature.
[0049] Preferably, a heating plate 140 is provided at the bottom of the inner cavity of the kettle body 100, and the upper side of the heating element 130 is attached to the lower end face of the heating plate 140. The close contact between the heating plate 140 and the heating element 130 enhances heat conduction efficiency, reduces heat loss, avoids the risk of dry burning, and improves heating safety. The heating element is made of nickel-chromium alloy and covered with a ceramic insulation layer, which ensures both thermal efficiency and compliance with electrical safety standards. From a manufacturing process perspective, the tubular structure is bonded to the metal layer at the bottom of the kettle through a brazing process, which improves heat conduction efficiency and enhances corrosion resistance, making it suitable for long-term high-temperature and high-humidity environments.
[0050] According to some embodiments of this utility model, refer to Figure 3 The kettle body 100 includes a kettle body 151 and a base 152. The kettle body 151 is located above the base 152, and the kettle body 151 and the base 152 are fixedly connected by bolts. A second coupler 110 is installed on the base 152, and the inner cavity of the kettle body 151 forms a water storage chamber. The split structure simplifies the manufacturing process, facilitates disassembly and cleaning, and at the same time, the electrical components are centrally arranged on the base 152, reducing the risk of water leakage.
[0051] According to some embodiments of this utility model, refer to Figure 2 and Figure 4 The device for draining residual water also includes a third pipe 330, one end of which is connected to the outlet of the water storage chamber, and the other end of which is connected to the inlet of the solenoid valve 210. It is understood that the third pipe 330 is directly connected to the water storage chamber, and the water in the third pipe 330 is not residual water.
[0052] Preferably, the first pipe 310, the second pipe 320 and the third pipe 330 are all made of food-grade silicone tubing, food-grade PP tubing or stainless steel tubing.
[0053] According to some embodiments of this utility model, the kettle body 100 also includes a kettle lid 160, which is located above the kettle body 151 and is detachably connected to the kettle body 151. The detachable kettle lid 160 facilitates the filling of water into the kettle body 151 or the cleaning of the inner cavity of the kettle body 151.
[0054] According to some embodiments of this utility model, the kettle body 100 is provided with a handle 170, which is fixedly installed on the outer peripheral wall of the kettle body 100. The ergonomic handle design improves grip stability, facilitates the separation of the kettle body 100 from the shell 200, and reduces the risk of burns during use.
[0055] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0056] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A device for draining residual water, characterized in that, include: Pot body (100); The housing (200) is equipped with a solenoid valve (210), a water pump (220), and a control board (230). The kettle body (100) is detachably connected to the housing (200). The control board (230) is electrically connected to the solenoid valve (210) and the water pump (220) respectively. The water inlet of the solenoid valve (210) is connected to the water outlet of the kettle body (100), and the air inlet of the solenoid valve (210) is connected to the outside. The water inlet of the water pump (220) is connected to the water outlet of the solenoid valve (210) through a first pipe (310), and the water outlet of the water pump (220) is connected to a second pipe (320). The solenoid valve (210) can switch between a first mode and a second mode, wherein: When the solenoid valve (210) is in the first mode, the water inlet and water outlet of the solenoid valve (210) are open, and the air inlet of the solenoid valve (210) is closed. When the solenoid valve (210) is in the second mode, the air inlet and water outlet of the solenoid valve (210) are open, and the water inlet of the solenoid valve (210) is closed.
2. The device for draining residual water according to claim 1, characterized in that, The housing (200) is provided with a first coupler (240), and the kettle body (100) is provided with a second coupler (110). The first coupler (240) and the second coupler (110) can be plugged into each other to connect the kettle body (100) and the housing (200). The first coupler (240) is electrically connected to the control board (230).
3. The device for draining residual water according to claim 2, characterized in that, The kettle body (100) is equipped with a temperature sensor (120), which is electrically connected to the second coupler (110), and the temperature measuring head of the temperature sensor (120) is inserted into the kettle body (100).
4. The device for draining residual water according to claim 2, characterized in that, The kettle body (100) is provided with a heating element (130), which is located at the bottom of the kettle body (100), and the second coupler (110) is electrically connected to the heating element (130).
5. The device for draining residual water according to claim 4, characterized in that, The heating element (130) is tubular, and both ends of the heating element (130) extend circumferentially along the body of the pot (100).
6. The device for draining residual water according to claim 5, characterized in that, The bottom of the inner cavity of the kettle body (100) is provided with a heating plate (140), and the upper side of the heating element (130) is attached to the lower end face of the heating plate (140).
7. The device for draining residual water according to claim 2, characterized in that, The kettle body (100) includes a kettle body (151) and a base (152). The kettle body (151) is located above the base (152). The kettle body (151) and the base (152) are fixedly connected. The second coupler (110) is installed on the base (152). The inner cavity of the kettle body (151) forms a water storage cavity.
8. The device for draining residual water according to claim 7, characterized in that, The device for draining residual water also includes a third pipe (330), one end of which is connected to the outlet of the water storage chamber and the other end of which is connected to the inlet of the solenoid valve (210).
9. The device for draining residual water according to claim 7, characterized in that, The pot body (100) also includes a pot lid (160), which is located above the pot body (151) and is detachably connected to the pot body (151).
10. The device for draining residual water according to claim 1, characterized in that, The pot body (100) is provided with a handle (170), which is fixedly installed on the outer peripheral wall of the pot body (100).