Modularized water feeding structure capable of preventing misjudgment

Abstract

The modularized water feeding structure capable of preventing misjudgment comprises a water inlet pipe assembly and a water level probe arranged in the head of the water inlet pipe assembly, a water outlet cover is embedded in the head of the water inlet pipe assembly, a water outlet cavity is formed between the water outlet cover and the head of the water inlet pipe assembly, and the upper end of the water level probe penetrates through the head of the water inlet pipe assembly and extends into the water outlet cavity. A plurality of water outlets are formed in the side wall of the water outlet cover in the circumferential direction, the height of the bottom edge of each water outlet is equal to or lower than the height of the top face of the water inlet pipe assembly, and at least one open-type bubble discharging opening formed in the upper portion of the water outlet cavity is formed in the top wall of the water outlet cover; according to the water outlet cover, after the water outlets are formed in the side wall, water in the water outlet cavity can be completely drained when the electric kettle pours water, the situation that water accumulated in the water outlet cavity is too high, and consequently the water level detection piece misjudges is avoided, and it is guaranteed that the automatic water feeding function of the electric kettle is kept normal.

Description

Technical Field

[0001] The utility model relates to the field of temperature controllers, in particular to a modular water supply structure for preventing misjudgment. Background Art

[0002] The current electric kettle realizes the automatic water supply function through the water supply structure at the bottom. The existing water supply structure is such as the Chinese patent document, patent number: CN202220241523.5 "A modular water supply structure with integrated probe combination". The water supply structure combines the thermistor, the water level detection component and the water inlet pipe assembly into an installation module to realize the probe integration structure, wherein the water supply structure includes a water inlet cover, the water inlet cover is placed on the top of the water inlet pipe assembly, and a water inlet hole connected to the water supply channel is opened on the water inlet cover. Clean water enters through the water supply channel, encounters the water inlet cover and is discharged into the electric kettle through the water inlet hole.

[0003] However, the following defects were found in the actual use of this water supply structure: 1. A chamber lower than the water inlet hole is formed between the water inlet cover and the water inlet pipe assembly. After the electric kettle is poured out of the boiling water, the extremely low water level should be used to automatically add water. However, due to a small amount of accumulated water in the chamber that is too high to be discharged through the water inlet hole, the water level detector misjudges that there is still water in the kettle, and the automatic water supply function cannot be enabled; 2. When the electric kettle starts to boil water after adding water, the water outside the water inlet cover heats up faster than the water inside the water inlet cover. However, since the water inlet hole is located at the upper part of the water inlet cover and has a small diameter, the convection effect inside and outside the water inlet cover is poor, and the water temperature detected by the thermistor is different from the water temperature of the kettle. The actual water temperature inside is inconsistent, and there is a lag in the detected temperature; third, the water inlet hole is opened on the upper side of the water inlet cover, and also because of its small diameter, the water in the chamber will produce a large number of rising small bubbles during the boiling process. When the water inlet hole is not vented in time, a large number of small bubbles will accumulate and form an air cavity in the water inlet cover, which will squeeze out the clean water in the chamber and cause a low water level. When the air cavity contacts the water level detection component, the water level detection component and the water are disconnected, thereby determining that there is no water and adding water, which causes the electric kettle to overflow with water. Therefore, it is necessary to further improve the current water supply structure. Summary of the invention

[0004] The purpose of the utility model is to solve the above-mentioned existing problems and provide a simple and reasonable modular water supply structure that prevents misjudgment. Its main function is to avoid misjudgment of the water level detection component due to excessive water accumulation in the water outlet chamber.

[0005] A modular water supply structure for preventing misjudgment comprises a water inlet pipe assembly provided with a water supply channel and a water level probe built into the head of the water inlet pipe assembly, the head of the water inlet pipe assembly is nested with a water outlet cover, and a water outlet cavity is formed between the water outlet cover, the upper end of the water level probe passes through the head of the water inlet pipe assembly and extends into the water outlet cavity, the side wall of the water outlet cover is circumferentially provided with a plurality of drainage openings, the bottom edge height of the plurality of drainage openings is required to be lower than the bottom position of the upper end of the water level probe leaking out of the water outlet cavity.

[0006] The purpose of the utility model can also be solved by the following technical measures:

[0007] As a more specific solution, the top wall of the water outlet cover is provided with at least one open bubble outlet located above the water outlet cavity.

[0008] As a further solution, a through hole matching the water level probe is provided at the top of the water inlet pipe assembly, and a waterproof sleeve is extended upward along the through hole on the top surface of the water inlet pipe assembly. The height of the waterproof sleeve is greater than the bottom edge height of the drain outlet, and the upper end of the water level probe passes through the through hole and the waterproof sleeve and at least partially extends into the water outlet cavity.

[0009] As a further solution, the top surface height of the water inlet pipe assembly is equal to or higher than the bottom edge heights of several drain outlets.

[0010] As a further solution, the top wall of the water outlet cover is provided with a single bubble outlet, the bubble outlet is arranged at the center of the top wall of the water outlet cover, and the area of ​​the bubble outlet occupies one third or more of the area of ​​the top wall of the water outlet cover.

[0011] As a further solution, a water retaining cover is provided above the bubble discharge port, and a plurality of support plates connected to the top wall of the water outlet cover are evenly distributed circumferentially on the water retaining cover, and a lateral bubble discharge seam connected to the bubble discharge port is formed between the water retaining cover and the top wall of the water outlet cover.

[0012] As a further solution, the shape of the drain outlet is a transverse rectangle, square, circle, ellipse or a combination thereof; the number of the drain outlets is an even number, and opposite sides of any two separated drain outlets are arranged on the same symmetry line of the water outlet cover.

[0013] As a further solution, the total width of the plurality of drain openings occupies one third or more of the circumference of the side wall of the water outlet cover; the height of each drain opening is H, and H≥2mm.

[0014] As a further solution, the head of the water inlet pipe assembly is provided with a first isolation chamber and a second isolation chamber separated from the upper water channel, the water level probe is installed in the first isolation chamber, and a thermistor is installed in the second isolation chamber, and the thermistor and the water level probe are isolated from each other by the first isolation chamber and the second isolation chamber.

[0015] As a further solution, the water retaining cover and the support plate are made integrally with the water outlet cover by sheet metal stamping.

[0016] 1. After several drainage holes are opened on the side wall of this water outlet cover, all the water in the water outlet cavity can be drained when pouring water from the electric kettle. Even if there is still water accumulated in the water outlet cavity, the height of the accumulated water will be limited by the height of the bottom edge of the drainage hole, avoiding the water level detection component from misjudging due to excessive water accumulation in the water outlet cavity, ensuring that the automatic water filling function of the electric kettle remains normal.

[0017] Second, when the electric kettle is boiling water, the wide drain outlet can be used to allow the higher temperature clean water in the kettle to exchange with the lower temperature clean water in the water outlet cavity, so that the clean water temperature in the water outlet cavity is consistent with the clean water temperature in the kettle, thereby improving the precision and accuracy of the thermistor in detecting water temperature.

[0018] 3. A large-diameter bubble discharge outlet is opened on the top of the water outlet cover so that during the water boiling process, small bubbles generated in the water outlet cavity can rise and be quickly discharged to the outside of the water outlet cover to avoid the accumulation of small bubbles to form an air cavity, so that the water outlet cavity will not have a low water level during the water boiling process, which will cause the water level probe to misjudge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram showing that the top surface of the water pipe assembly in the utility model is lower than the bottom edge height of the drain outlet.

[0021] Figure 3 It is a schematic diagram showing that the top surface of the water pipe assembly in the utility model is higher than the bottom edge of the drain outlet.

[0022] Figure 4 It is a schematic cross-sectional structure diagram of the water supply structure of the utility model from another angle.

[0023] Figure 5 It is a schematic diagram of the structure of the water outlet cover of the utility model.

[0024] Figure 6 It is a schematic diagram of bubble discharge of the utility model.

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the water outlet cover of the utility model.

[0026] Figure 8 This is a schematic diagram of the isolation chamber structure of the utility model. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1 and Figure 2 As shown, a modular water supply structure for preventing misjudgment includes a water inlet pipe assembly 1 provided with a water supply channel 101 and a water level probe 2 built into the head of the water inlet pipe assembly 1, the head of the water inlet pipe assembly 1 is nested with a water outlet cover 3, and a water outlet cavity 301 is formed between the water outlet cover 3, the upper end portion 21 of the water level probe 2 passes through the head of the water inlet pipe assembly 1 and extends into the water outlet cavity 301, and the side wall 302 of the water outlet cover 3 is circumferentially provided with a plurality of drain ports 31, and the bottom edge height H1 of the plurality of drain ports 31 is lower than the bottommost position H2 of the upper end portion 21 of the water level probe 2 leaking out of the water outlet cavity 301.

[0029] After the water outlet cover 3 is provided with several drain ports 31 on the side wall 302, all the water in the water outlet cavity 301 can be drained out when the electric kettle is pouring water. Even if there is still water accumulated in the water outlet cavity 301, the height of the accumulated water will be limited by the bottom edge height H1 of the drain port 31, ensuring that the height of the accumulated water is lower than the leaking part of the upper end portion 21 of the water level probe 2, avoiding the water accumulation in the water outlet cavity 301 too high to cause the water level probe 2 to misjudge, ensuring that the automatic water filling function of the electric kettle remains normal.

[0030] The top wall 303 of the water outlet cover 3 is provided with at least one open bubble outlet 32 ​​located above the water outlet cavity 301; the bubble outlet 32 ​​is provided on the top wall 303 of the water outlet cover 3, so as to follow the rising direction of small bubbles, prevent the small bubbles from adhering to the bottom surface of the top wall 303, and increase the speed of small bubble discharge.

[0031] The top of the water inlet pipe assembly 1 is provided with a through hole 102 matching the water level probe 2, and a waterproof sleeve 103 is extended upward from the top surface of the water inlet pipe assembly 1 along the through hole 102. The height of the waterproof sleeve 103 is greater than the height H1 of the bottom edge of the drain port 31. After the upper end portion 21 of the water level probe 2 passes through the through hole 102 and the waterproof sleeve 103, at least a portion of it extends into the water outlet cavity 301.

[0032] The water level probe 2 and the through hole 102 can form a sealing fit to prevent water from penetrating into the water inlet pipe assembly 1, and the waterproof sleeve 103 can raise the upper end portion 21 of the water level probe 2 to the bottom position H2 of the water outlet cavity 301. Even if in some embodiments the top surface height H3 of the water inlet pipe assembly 1 is lower than the bottom edge height H1 of the drain outlet 31, resulting in a small amount of water accumulation in the water outlet cavity 301, the waterproof sleeve 103 can still make the end of the upper water level probe 2 completely higher than the bottom edge of the drain outlet 31.

[0033] In this application, if Figures 3 to 8As shown, the most preferred implementation scheme is: the top surface height H3 of the water inlet pipe assembly 1 is higher than the bottom edge height H1 of the plurality of drain ports 31; when the electric kettle is pouring water, all the water in the water outlet cavity 301 can be drained out, and even without adding the waterproof sleeve 103, it can also avoid the accumulation of water in the water outlet cavity 301 causing the water level detection component to make a misjudgment, thereby ensuring that the automatic water filling function of the electric kettle remains normal.

[0034] In addition, in the present embodiment, a single bubble outlet 32 ​​is provided on the top wall 303 of the water outlet cover 3, and the bubble outlet 32 ​​is arranged at the center position of the top wall 303 of the water outlet cover 3, and the area of ​​the bubble outlet 32 ​​occupies one third or more of the area of ​​the top wall 303 of the water outlet cover 3; a large-diameter bubble outlet 32 ​​is provided on the top of the water outlet cover 3, so that during the water boiling process, small bubbles generated in the water outlet cavity 301 can be quickly discharged to the outside of the water outlet cover 3 after rising, so as to avoid the accumulation of small bubbles to form an air cavity, so that during the water boiling process, the water outlet cavity 301 will not have a low water level, which will cause the water level probe 2 to misjudge.

[0035] A water retaining cover 4 is arranged above the bubble outlet 32, and a plurality of support plates 41 connected to the top wall 303 of the water outlet cover 3 are evenly distributed on the water retaining cover 4 in the circumferential direction, and a lateral bubble discharge slit 33 connected to the bubble outlet 32 ​​is formed between the water retaining cover 4 and the top wall 303 of the water outlet cover 3, and the bubble outlet 32 ​​and the bubble discharge slit 33 simultaneously take into account the functions of water discharge, water intake and bubble discharge;

[0036] In this embodiment, the shape of the water retaining cover 4 is adapted to the shape of the bubble discharge port 32, and the diameter of the water retaining cover 4 is equal to or greater than the diameter of the bubble discharge port 32. The water retaining cover 4 can block the bubble discharge port 32, so that the water supply structure can remain beautiful, and when the electric kettle is filled with water, it can block the water flow axially ejected from the water supply channel 101, preventing the water flow from spraying straight upward out of the electric kettle and affecting the user's experience. The bubble discharge gap 33 formed between the two can enable bubbles and water to be discharged laterally, which can reduce the water flow speed and avoid the above-mentioned problems.

[0037] The shape of the drain port 31 is preferably a transverse rectangle, which can increase the width of the drain port 31. When the electric kettle is boiling water, the wide drain port 31 can be used to allow the higher temperature clean water in the kettle to be convectively exchanged with the lower temperature clean water in the water outlet cavity 301, so that the clean water temperature in the water outlet cavity 301 is consistent with the clean water temperature in the kettle, thereby improving the precision and accuracy of the thermistor 5 in detecting water temperature.

[0038] The number of the drain ports 31 is preferably an even number, and the opposite sides of any two separated drain ports 31 are arranged on the same symmetry line of the water outlet cover 3; the two drain ports 31 are arranged opposite each other, so that the water flow can flow in and out quickly along a straight line, which can improve the convection effect.

[0039] In other embodiments, the shape of the drain port 31 may also be square, circular, elliptical or a combination thereof.

[0040] The total width of the plurality of drain outlets 31 occupies one third or more of the circumference of the side wall 302 of the water outlet cover 3. In the present embodiment, the width of each drain outlet 31 is L, and the total width composed of n Ls occupies about one half of the circumference of the side wall 302 of the water outlet cover 3. The height of each drain outlet 31 is H. In the present embodiment, 4mm≤H≤8mm. The drain outlet 31 of this specification has sufficient flow cross-sectional area to ensure the convection effect.

[0041] The head of the water inlet pipe assembly 1 is provided with a first isolation chamber 104 and a second isolation chamber 105 separated from the upper water channel 101, the water level probe 2 is installed in the first isolation chamber 104, and the second isolation chamber 105 is installed with a thermistor 5, the thermistor 5 is against or close to the top surface of the isolation chamber, and the thermistor 5 and the water level probe 2 are isolated from each other by the first isolation chamber 104 and the second isolation chamber 105; the mutual interference between the thermistor 5 and the water level probe 2 is reduced, and the detection accuracy of the thermistor 5 and the water level probe 2 is improved.

[0042] The thermistor 5 is provided with two lead wires and the water level probe 2 is provided with one lead wire; the head assembly of the water inlet pipe assembly 1 is connected with three terminal pieces 6, which are electrically connected to the lead wires through the terminal pieces 6, so that the thermistor 5, the water level probe 2 and the water inlet pipe assembly 1 are combined into an installation module.

[0043] The water retaining cover 4 and the support plate 41 are made integrally with the water outlet cover 3 by sheet metal stamping; the connection strength between the water retaining cover 4 and the support plate 41 can be improved, the production efficiency can be improved, the production cost of the water outlet cover 3 can be reduced, and the water outlet cover 3 can be produced on automated production equipment.

[0044] The water inlet pipe assembly 1 includes a water inlet pipe 11 and a check valve assembly 12. The tube cavity of the water inlet pipe 11 defines a water supply channel 101. The check valve assembly 12 is arranged in the water supply channel 101. The specific structure of the check valve assembly 12 can refer to the prior art, as shown in the patent number: CN202220241523.5 "A modular water supply structure with an integrated probe combination", which will not be elaborated here.

[0045] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A modular water supply structure for preventing misjudgment, comprising a water inlet pipe assembly provided with a water supply channel and a water level probe built into the head of the water inlet pipe assembly, wherein the head of the water inlet pipe assembly is embedded with a water outlet cover, and a water outlet cavity is formed between the water outlet cover and the water outlet cover, and the upper end of the water level probe passes through the head of the water inlet pipe assembly and extends into the water outlet cavity, characterized in that The side wall of the water outlet cover is provided with a plurality of drainage openings in the circumferential direction, and the bottom edge height of the plurality of drainage openings is lower than the bottom position of the upper end of the water level probe leaking out of the water outlet cavity.

2. The modular water supply structure for preventing misjudgment according to claim 1, characterized in that: The top wall of the water outlet cover is provided with at least one open air bubble outlet located above the water outlet cavity.

3. The modular water supply structure for preventing misjudgment according to claim 1, characterized in that: A through hole matching the water level probe is provided at the top of the water inlet pipe assembly, and a waterproof sleeve is extended upward along the through hole from the top surface of the water inlet pipe assembly. The height of the waterproof sleeve is greater than the bottom edge height of the drain outlet. After the upper end of the water level probe passes through the through hole and the waterproof sleeve, at least part of it extends into the water outlet cavity.

4. A modular water supply structure for preventing misjudgment according to claim 1 or 3, characterized in that: The top surface height of the water inlet pipe assembly is equal to or higher than the bottom edge heights of the plurality of drain outlets.

5. The modular water supply structure for preventing misjudgment according to claim 2, characterized in that: The top wall of the water outlet cover is provided with a single bubble outlet, which is arranged at the center of the top wall of the water outlet cover, and the area of ​​the bubble outlet occupies one third or more of the area of ​​the top wall of the water outlet cover.

6. The modular water supply structure for preventing misjudgment according to claim 5, characterized in that: A water retaining cover is arranged above the bubble discharge port, and a plurality of support plates connected to the top wall of the water outlet cover are evenly distributed circumferentially on the water retaining cover, and a lateral bubble discharge slot connected to the bubble discharge port is formed between the water retaining cover and the top wall of the water outlet cover.

7. The modular water supply structure for preventing misjudgment according to claim 1, characterized in that: The shape of the drain outlet is a transverse rectangle, square, circle, ellipse or a combination thereof; the number of the drain outlets is an even number, and the opposite sides of any two separated drain outlets are arranged on the same symmetry line of the water outlet cover.

8. The modular water supply structure for preventing misjudgment according to claim 1, characterized in that: The total width of the plurality of drain openings occupies one third or more of the circumference of the side wall of the water outlet cover; the height of each drain opening is H, and H≥2mm.

9. The modular water supply structure for preventing misjudgment according to claim 1, characterized in that: The head of the water inlet pipe assembly is provided with a first isolation chamber and a second isolation chamber separated from the upper water channel. The water level probe is installed in the first isolation chamber, and a thermistor is installed in the second isolation chamber. The thermistor and the water level probe are isolated from each other by the first isolation chamber and the second isolation chamber.

10. The modular water supply structure for preventing misjudgment according to claim 6, characterized in that: The water retaining cover and the supporting plate are integrally formed with the water outlet cover by sheet metal stamping.

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