Dustproof kettle

Abstract

The embodiment of the utility model provides a dustproof kettle which comprises a kettle body, a cover plate and a cover plate. The dustproof cover is arranged at the spout and used for covering the spout, the dustproof cover is rotatably connected with the kettle body through a rotating shaft, and the spout can be opened when the kettle body inclines so that water can be poured conveniently; wherein in the state that the dustproof cover covers the spout, the gravity center of the dustproof cover is located on the side, facing the spout, of the rotating shaft, and the included angle A formed by the connecting line between the gravity center of the dustproof cover and the center of the rotating shaft and the vertical line passing through the center of the rotating shaft is smaller than the minimum inclination angle P of the kettle body when water is poured in the state that the kettle body is in the rated capacity. According to the dustproof kettle, it can be guaranteed that the dustproof cover is automatically opened when inclining to the angle at which water pouring begins, in the water pouring process, the dustproof cover is opened firstly, and then water flows out, so that the dustproof cover does not make contact with the poured-out water flow, the water flow is more concentrated, and good sanitation and smooth water pouring experience can be guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooking utensils, in particular to a dustproof kettle. BACKGROUND

[0002] Most of the spouts of the electric heating kettle on the market are open, which is easy to enter dust, insects and the like from the spout, affecting the use experience. In order to prevent dust and insects from entering the kettle body, some products are provided with a dust cover at the spout. The dust cover is opened by the impact force of water flow, and the water flow flows out from the gap opened by the dust cover and the spout. During the water outlet process, the influence of the dust cover on the water flow will cause the water flow not to be concentrated, and the use experience is poor. In addition, some products need to manually open the dust cover before pouring water. Such a way of pouring water is not convenient, and directly touching the dust cover with hands is also easy to contaminate the spout. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve the problems that the dust cover cannot be automatically opened when pouring water and the dust cover is contacted with water flow during the pouring process, resulting in water splashing.

[0004] To this end, the first aspect of the present application provides a dustproof kettle, comprising: a kettle body, the kettle body comprising a spout; a dust cover arranged at the spout and used for covering the spout, the dust cover being rotatably connected to the kettle body through a rotating shaft and being capable of opening the spout when the kettle body is inclined to facilitate pouring water; wherein, in a state where the dust cover covers the spout, the center of gravity of the dust cover is located on a side of the rotating shaft facing the spout, and an included angle A formed between a line connecting the center of gravity of the dust cover and the center of the rotating shaft and a vertical line passing through the center of the rotating shaft is less than a minimum inclination angle P of the kettle body when pouring water in a state where the kettle body is at a rated capacity.

[0005] The dustproof kettle provided by the embodiment of the present aspect comprises a kettle body and a dustproof cover, the dustproof cover is rotatably connected with the kettle body through a rotating shaft, so that the dustproof cover can be freely opened and closed and rotated at the kettle spout; further, the center of gravity of the dustproof cover is located on the side of the rotating shaft facing the kettle spout, so that the dustproof cover has a rotating tendency in the opposite direction under the action of gravity, thereby after the water pouring is completed, the dustproof cover can be automatically rotated under the action of gravity when the kettle body returns to the upright state, and then is closed on the kettle spout, preventing dust or foreign matter from entering the kettle spout, convenient and sanitary to use, and manual closing of the dustproof cover is not required, convenient to use. And, by setting the center of gravity of the dustproof cover on the side of the rotating shaft facing the kettle spout, even if the kettle body is placed on a slightly inclined table top, the dustproof cover can also be in a closed state, the kettle spout can effectively support the dustproof cover while ensuring the adhesion of the dustproof cover and the kettle spout. In addition, the dustproof cover arranged at the kettle spout can also prevent liquid from overflowing from the kettle spout when boiling water, improving the use experience. And, the dustproof cover can also reduce the heat dissipation in the kettle body, improve the heating speed when boiling water, more quickly heat to the specified temperature, and reduce the cooling speed in the kettle body after boiling water, better heat preservation performance. In addition, the splashing problem of the kettle during boiling water generally occurs between the time when the liquid is close to the boiling state and the time when the boiling is interrupted, since the dustproof cover can block the splashing at the kettle spout on the one hand and shorten the interruption time on the other hand, therefore, the water droplets splashed on the table top around the kettle body during the boiling process can be greatly reduced, and the water splashing effect is good. Further, the angle A formed between the line connecting the center of gravity of the dustproof cover and the center of the rotating shaft and the vertical line passing through the center of the rotating shaft is less than the angle P of the minimum inclination of the kettle body when pouring water in the state that the kettle body is at the rated capacity, so as to ensure that the dustproof cover is automatically opened when the kettle body is inclined to the angle at which the pouring starts, and automatic cover opening is realized. Specifically, when the user starts pouring water, as the kettle body is inclined, when the inclination angle of the kettle body is greater than A, the dustproof cover is also automatically opened under the action of gravity, and when the kettle body is inclined to the minimum inclination angle for pouring water in the state that the kettle body is at the rated capacity, the water flow flows out from the kettle spout, since A < P, the dustproof cover is opened first and the water flow is discharged later during the pouring process, therefore the dustproof cover will not touch the poured water flow, so that the water flow is more concentrated, and good hygiene and smooth pouring experience are ensured.

[0006] In some embodiments, the dustproof kettle further comprises a counterweight part, which is welded, detachably connected or integrally arranged with the dustproof cover. In this way, the counterweight part can be used to adjust the center of gravity without changing the shape of the dustproof cover.

[0007] In some embodiments, the upper part of the kettle body is inclined towards the inside of the kettle body, and the weight part is inclined away from the kettle body from the upper end to the lower end when the cover body is covered on the kettle spout. In this way, due to the inclined structure of the upper part of the kettle body, the upper part of the weight part is also inclined towards the kettle body relative to the central axis of the kettle body, is more fitted to the kettle body, and the force arm of the center of gravity of the weight part to the rotating shaft is increased. According to the principle that the moment is equal to the product of the force and the force arm, increasing the force arm can reduce the weight of the weight part under the condition of keeping the same moment, so that the same dust cover opening effect can be achieved with a smaller weight part, ensuring that the dust cover can be automatically opened when pouring water, effectively avoiding the contact between the water flow and the dust cover, and ensuring the quality of the water flow.

[0008] In some embodiments, the kettle body further comprises a kettle body inner container, the kettle spout is welded or screw-connected outside the kettle body inner container, and a water outlet is arranged on the side wall of the kettle body inner container, the top end of the water outlet being lower than the weight part. In this way, it can be ensured that the water flow does not contact the weight part during the pouring process, and the water flow is not affected by the weight part, so that the water flow is smooth and concentrated.

[0009] In some embodiments, the dust cover comprises a cover body and a connecting seat connected with the cover body, one of the side walls of the kettle body and the connecting seat is provided with a supporting shaft hole, and the other is provided with a rotating shaft, the rotating shaft and the connecting seat or the kettle body are in an integrated structure, and the rotating shaft is rotatably arranged in the supporting shaft hole, so that the dust cover is rotatably connected with the kettle body. In this way, the connecting seat or the kettle body and the rotating shaft are in an integrated structure, the mechanical properties of the integrated structure are good, the connection strength between the connecting seat or the kettle body and the rotating shaft is improved, in addition, the connecting seat or the kettle body and the rotating shaft can be integrally manufactured, mass production is realized, and the integrity of the dust cover is improved, the number of parts is reduced, and the installation process is reduced. The cooperation between the rotating shaft and the supporting shaft hole can ensure the free rotation of the rotating shaft, and the structure is simple and convenient to install.

[0010] In some embodiments, the dust cover further comprises a connecting seat connected with the cover body, the connecting seat is provided with a rotating shaft accommodating hole, the kettle body is provided with a supporting shaft hole, and the rotating shaft is inserted into the rotating shaft accommodating hole and the supporting shaft hole, so that the dust cover is rotatably connected with the kettle body. In this way, the rotating shaft is independently arranged, and the cooperation between the rotating shaft and the rotating shaft accommodating hole and the supporting shaft hole can ensure the free rotation of the rotating shaft, and the structure is simple and convenient to install.

[0011] In some embodiments, the top of the kettle spout is provided with a cross beam, the bottom surface of the cross beam is provided with two downward protruding mounting pieces, the number of the supporting shaft holes is two when the kettle body is provided with the supporting shaft holes, the two supporting shaft holes are arranged on the two mounting pieces respectively, and the two supporting shaft holes are oppositely arranged; the number of the rotating shafts is two when the kettle body is provided with the rotating shafts, the two rotating shafts are arranged on the sides of the two mounting pieces facing each other respectively, and the two rotating shafts are oppositely arranged.

[0012] In the embodiments, two mounting pieces arranged on the bottom surface of the cross beam and the rotating shaft or the supporting shaft hole arranged thereon are used to be connected with the connecting seat, the structure is simple, easy to process and produce, and arranging the rotating shaft or the supporting shaft hole on the protruding mounting piece is also beneficial to the assembly between the connecting seat, in actual assembly, the connecting seat can be inserted between the two mounting pieces, so that the two mounting pieces are slightly deformed outward, so that the rotating shaft can enter the supporting shaft hole, facilitating the assembly of the rotating shaft and the supporting shaft hole.

[0013] In some embodiments, the counterweight part is detachably connected with the dustproof cover, the connecting seat is provided with a containing groove with an opening, and the counterweight part can be installed into or taken out of the containing groove through the opening.

[0014] In the embodiments, in order to achieve a better counterweight effect, the counterweight part and the cover body are generally made of different materials, and the specific gravity of the counterweight part is greater than that of the cover body, if the counterweight part and the cover body are designed as an integral structure or a structure connected by welding, the process is relatively complex, and the steps of processing and production are more, the embodiments provide that the counterweight part is detachably connected with the cover body, so that the assembly process between the counterweight part and the cover body can be simplified, which is beneficial to processing and production, and the counterweight part can also be disassembled for cleaning, which is beneficial to the cleaning of the product. Further, the connecting seat provides a mounting space for the counterweight part, and the connecting seat is provided with a containing groove with an opening, so that the counterweight part can be pushed into the containing groove through the opening during assembly, which is convenient to operate and simple to assemble.

[0015] In some embodiments, the connecting seat comprises a supporting plate and a clamping jaw, the clamping jaw is arranged at the end of the supporting plate extending along the circumferential direction of the kettle body, the clamping jaw can cover the edge of the counterweight part, and the clamping jaw and the supporting plate enclose the containing groove.

[0016] In the embodiments, the connecting seat comprises a supporting plate and clamping jaws located at both ends of the supporting plate, the cross-sectional shape of the connecting seat is generally C-shaped, the clamping jaws are arranged at the ends of the supporting plate extending along the circumferential direction of the kettle body, so that the clamping jaws can be arranged in the gap space between the circular kettle body and the counterweight part, the gap space is fully utilized, so that the counterweight part can be located as close to the kettle body as possible, and meanwhile, the two ends of the counterweight part can be covered by the C-shaped structure, so that the counterweight part and the dustproof cover can be reliably and effectively connected, the excellent performance of the dustproof cover automatically opening is ensured, and the reliability of the structure is also ensured.

[0017] In some embodiments, the connecting seat further comprises a bottom support arranged below the support plate and connected with the support plate, the bottom support is capable of supporting the counterweight part, and the bottom support is provided with a hollow region. In this way, since the counterweight part always has a downward falling tendency under the action of gravity during use, the bottom support can reliably support the counterweight part upward, thereby ensuring the stability and reliability of use in hot and cold states or at various angles. Further, the bottom support is provided with a hollow region, so that the condensed water in the connecting seat can quickly flow out through the hollow region, thereby avoiding water storage in the connecting seat.

[0018] In some embodiments, one of the connecting seat and the counterweight part is provided with a buckle, and the other is provided with a buckle hole matched with the buckle, and the buckle and the buckle hole are buckled to connect the connecting seat and the counterweight part. In this way, when the counterweight part is pushed into the connecting seat, the buckle and the buckle hole can be automatically buckled, so that the assembly of the counterweight part and the connecting seat is simple, and the connection of the two can be completed after installation, without the need for additional connection procedures, thereby greatly saving the assembly time.

[0019] In some embodiments, in the state where the cover body is covered on the spout, the end of the cover body away from the kettle body is lower than the horizontal plane where the center of the rotating shaft is located.

[0020] In these embodiments, in the state where the cover body is covered on the spout, the end of the cover body away from the kettle body is lower than the center of the rotating shaft. By arranging the end of the cover body away from the kettle body to be lower, the gravity lever arm of the dustproof cover is increased, thereby increasing the moment of automatic rotation of the dustproof cover under the condition that the gravity of the dustproof cover remains unchanged, enhancing the automatic opening and closing capability of the dustproof cover, and thereby facilitating smooth automatic opening of the dustproof cover during the process of pouring water from the inclined kettle body, and ensuring the reliability of the automatic opening and closing function of the dustproof cover.

[0021] In some embodiments, in the state where the cover body is covered on the spout, the angle between the line connecting the lowest point of the end of the cover body away from the kettle body and the center of the rotating shaft and the horizontal line is greater than 0° and less than or equal to 45°.

[0022] In these embodiments, the range of the angle can quantify the degree of the end of the cover body away from the kettle body being lower than the center of the rotating shaft, and the angle is greater than 0° and less than or equal to 45°. On the one hand, the end of the cover body away from the kettle body can be ensured to be lower than the center of the rotating shaft, the gravity lever arm is increased, the automatic opening and closing capability of the dustproof cover is enhanced, and better water pouring experience can be achieved. On the other hand, the angle can also be prevented from being too large to prevent the center of gravity of the dustproof cover from being more biased toward the spout during pouring, which is not conducive to the automatic separation of the dustproof cover and the spout.

[0023] In some embodiments, in the state that the dustproof cover covers the spout, the angle between the line connecting the center of gravity of the dustproof cover and the center of the rotating shaft and the vertical line passing through the center of the rotating shaft is greater than or equal to 1° and less than or equal to 25°. In order to ensure that the dustproof cover can well fit the spout and avoid the dustproof cover from being raised when placed horizontally, the center of gravity of the dustproof cover should be located on the side of the rotating shaft facing the spout, and the angle between the line connecting the center of gravity of the dustproof cover and the center of the rotating shaft and the vertical line passing through the center of the rotating shaft is greater than or equal to 1°, so as to ensure that the dustproof cover can be in a closed state even when the kettle is placed on a slightly inclined table. In order to ensure that the dustproof cover can be automatically opened under the action of gravity when pouring water, the angle between the line connecting the center of gravity of the dustproof cover and the center of the rotating shaft and the vertical line passing through the center of the rotating shaft needs to be less than the minimum inclination angle of the kettle when pouring water, and the angle is further limited to be less than or equal to 25°. Within this range, the dustproof cover can be automatically opened under the action of gravity as the kettle is inclined, and the inclination angle of the kettle when pouring water can be avoided from being too large to be difficult to operate.

[0024] Further aspects and / or advantages of the present general inventive concept will become apparent from the following description, particularly when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and other objects and features of the present application will become apparent from the following description of embodiments, taken in conjunction with the accompanying drawings, which illustrate:

[0026] Figure 1 is a schematic view of a cross-sectional structure of a dustproof kettle along a longitudinal direction according to an embodiment of the present application;

[0027] Figure 2 is a schematic view of an inclined position of a dustproof kettle when pouring water in a state that the water amount is a rated maximum water amount according to an embodiment of the present application;

[0028] Figure 3 is a schematic view of an inclined position of a dustproof kettle when pouring water in a state that the water amount is less according to an embodiment of the present application;

[0029] Figure 4 is a front view of a dustproof cover according to an embodiment of the present application;

[0030] Figure 5 is a schematic view of a structure of a dustproof cover according to an embodiment of the present application;

[0031] Figure 6 is a front view of a dustproof cover according to another embodiment of the present application;

[0032] Figure 7It is the front view of dustproof cover according to another embodiment of the utility model at pouring water angle;

[0033] Figure 8 It is a structural schematic view of dustproof cover according to an embodiment of the utility model;

[0034] Figure 9 It is another structural schematic view of dustproof cover according to another embodiment of the utility model;

[0035] Figure 10 It is a structural schematic view of counterweight part and connecting seat separation of dustproof cover according to another embodiment of the utility model;

[0036] Figure 11 It is a sectional structure schematic view of counterweight part and connecting seat assembly according to an embodiment of the utility model;

[0037] Figure 12 It is a sectional structure schematic view of connecting seat according to an embodiment of the utility model;

[0038] Figure 13 It is a structural schematic view of dustproof cover according to another embodiment of the utility model;

[0039] Figure 14 It is an explosion view of dustproof cover according to another embodiment of the utility model;

[0040] Figure 15 It is a sectional structure schematic view of dustproof kettle along horizontal direction according to another embodiment of the utility model;

[0041] Figure 16 It is an explosion view of dustproof kettle according to an embodiment of the utility model;

[0042] Figure 17 It is a structural schematic view of dustproof kettle according to an embodiment of the utility model;

[0043] Figure 18 It is a local enlarged schematic view of kettle spout of dustproof kettle according to another embodiment of the utility model;

[0044] Figure 19 It is a structural schematic view of dustproof cover according to another embodiment of the utility model;

[0045] Figure 20 It is a sectional structure schematic view of dustproof cover according to another embodiment of the utility model;

[0046] Figure 21 It is a structural schematic view of kettle spout according to an embodiment of the utility model;

[0047] Figure 22 is a sectional structure schematic diagram of the dustproof kettle along a horizontal direction according to another embodiment of the utility model;

[0048] Figure 23 is a tilt position schematic diagram of the dustproof kettle according to an embodiment of the utility model when the kettle body inner container is of a larger diameter and starts to pour water;

[0049] Figure 24 is a tilt position schematic diagram of the dustproof kettle according to an embodiment of the utility model when the kettle body inner container is of a smaller diameter and starts to pour water;

[0050] Figure 25 is a sectional structure schematic diagram of the dustproof kettle along a longitudinal direction according to another embodiment of the utility model;

[0051] Figure 26 is a structure schematic diagram of the dustproof cover according to an embodiment of the utility model when the kettle body is vertically placed;

[0052] Figure 27 is a comparative schematic diagram of the cover body in the related art and the dustproof cover according to an embodiment of the utility model when the kettle body is vertically placed;

[0053] Figure 28 is a structure schematic diagram of the dustproof cover according to an embodiment of the utility model when the kettle body is tilted to a minimum water pouring angle;

[0054] Figure 29 is a sectional structure schematic diagram of the dustproof kettle along a longitudinal direction according to an embodiment of the utility model when pouring water;

[0055] Figure 30 is a structure schematic diagram of the dustproof cover according to another embodiment of the utility model when the counterweight part and the connecting seat are separated.

[0056] Figures 1 to 30 BRIEF DESCRIPTION OF DRAWINGS

[0057] 10 kettle body, 101 water outlet, 110 kettle spout, 111 crossbeam, 112 mounting piece, 113 support shaft hole, 120 kettle body inner container,

[0058] 20 dustproof cover, 201 center of gravity of the dustproof cover, 201a center of gravity of the dustproof cover, 210 cover body, 210a cover body, 220 rotating shaft, 221 center of the rotating shaft, 230 connecting seat, 231 notch, 232 support plate, 233 claw, 234 buckle hole, 235 opening, 236 bottom support, 240 counterweight part, 241 arc surface, 242 buckle,

[0059] I: dust cover balance area, J: dust cover cover spout area, W1 water level in kettle in static state, W2 water level in kettle in start pouring state. DETAILED DESCRIPTION

[0060] The following detailed description is presented to aid the reader in gaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents can be used, and the

[0061] The terminology used herein is for the purpose of describing particular examples only and is not intended to be limiting of the examples described herein. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0062] As used herein, the term "and / or" includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items.

[0063] Although the terms such as "first", "second", and "third" can be used herein to describe various components, assemblies, regions, layers or parts, these components, assemblies, regions, layers or parts should not be limited by these terms. Instead, these terms are only used to distinguish one component, assembly, region, layer or part from another component, assembly, region, layer or part. Thus, the first component, first assembly, first region, first layer or first part referred to in the examples described herein can also be referred to as the second component, second assembly, second region, second layer or second part without departing from the teachings of the examples.

[0064] In the description, when an element such as a layer, a region, or a substrate is referred to as being "on" another element, "connected to" or "coupled to" another element, it can be directly on the other element, directly connected to or coupled to the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on" another element, "directly connected to" or "directly coupled to" another element, there are no other elements interposed therebetween.

[0065] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has", "having" are meant to be interpreted inclusively rather than exclusively, unless otherwise indicated by context. The term "plurality" means any number, including two and more.

[0066] The terms "upper", "lower", "top", "bottom", and the like in the present application are defined based on the orientation of the product when it is placed upright in a normal use state.

[0067] Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs when read in light of the present application. Unless otherwise expressly defined herein, terms such as, for example, "in" and "on" are to be construed as in their normal and customary sense, unless otherwise explicitly defined herein. Terms such as, for example, "between", are to be construed as "between or including", unless otherwise explicitly defined herein.

[0068] In addition, in the description of the examples, when it is considered that a detailed description of the related structure or function known to be understood will cause ambiguity in the interpretation of the present application, such a detailed description will be omitted.

[0069] The following will be described in conjunction with Figures 1 to 30 A dustproof kettle is described.

[0070] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The first aspect of the present application provides a dustproof kettle, comprising a kettle body 10 and a dustproof cover 20, the kettle body 10 comprising a spout 110; the dustproof cover 20 is arranged at the spout 110 and used for covering the spout 110, the dustproof cover 20 is rotatably connected with the kettle body 10 through a rotating shaft 220, and the dustproof cover 20 can open the spout 110 when the kettle body 10 is inclined, so as to facilitate pouring water; wherein, in the state that the dustproof cover 20 covers the spout 110, the center of gravity 201 of the dustproof cover is located on the side of the rotating shaft 220 facing the spout 110, and the included angle A formed between the line connecting the center of gravity 201 of the dustproof cover and the center 221 of the rotating shaft and the vertical line passing through the center 221 of the rotating shaft is less than the minimum inclination angle P of the kettle body 10 when the kettle body 10 is in the state of the rated capacity and pouring water.

[0071] The dustproof kettle provided by the embodiment of the present aspect comprises a kettle body 10 and a dustproof cover 20, the dustproof cover 20 is rotatably connected with the kettle body 10 through a rotating shaft 220, so that the dustproof cover 20 can be freely opened and closed at the kettle spout 110; the angle A formed between the line connecting the center of gravity 201 of the dustproof cover and the center 221 of the rotating shaft and the vertical line passing through the center 221 of the rotating shaft is smaller than the angle P of the minimum inclination of the kettle body 10 when pouring water in the state that the kettle body 10 is at the rated capacity, so that the dustproof cover 20 can be automatically opened when the kettle body 10 is inclined to the angle at which the pouring of water is started, and automatic cover opening is realized. Specifically, when the user starts to pour water, with the inclination of the kettle body 10, when the inclination angle of the kettle body 10 is greater than A, the dustproof cover 20 is also automatically opened under the action of gravity, and when the kettle body 10 is inclined to the minimum inclination angle at which water is poured in the state that the kettle body 10 is at the rated capacity, the water flow flows out from the kettle spout 110. Since A < P, the dustproof cover 20 is opened first and the water flow is discharged later in the process of pouring water, so that the dustproof cover 20 will not contact the poured water flow, the water flow is more concentrated, and good hygiene and smooth pouring experience are ensured.

[0072] It is worth noting that the center 221 of the rotating shaft is not necessarily the actual center of the rotating shaft 220. Here, the center 221 of the rotating shaft refers to the center of the projection of the rotating shaft 220 on the section of the dustproof kettle passing through the center of gravity 201 of the dustproof cover and along the longitudinal direction. Since the rotating shaft 220 of the dustproof kettle can have various setting modes, for example, it can comprise an integral rotating shaft 220 or two segmented rotating shafts 220, the center 221 of the rotating shaft will not necessarily fall on the section of the dustproof kettle passing through the center of gravity 201 of the dustproof cover and along the longitudinal direction.

[0073] As shown in Table 1 below, in the case of different values of P / A, the amount of water splashed on the dustproof cover 20 of the kettle body 10, the gap between the side of the dustproof cover 20 away from the kettle inner container 120 and the kettle spout 110, the rated capacity 1.5L, the heating power 1500W, the heating time to jump out at 96℃, and the performance of the 1.5L / 1500W kettle, such as the amount of water added 1.55L, the heating power 1725W, the diameter of the splashed water droplets, and the like. According to Table 1, firstly, when P / A is greater than or equal to 1, the dustproof cover 20 has no water splashing, which performs well, and when P / A is less than 1, the dustproof cover 20 has slight water splashing, which indicates that the water flow first contacts the dustproof cover 20, and the dustproof cover 20 is opened under the impact of the water flow, which may cause the water flow to be not concentrated and the water flow to be contaminated, thereby affecting the quality of pouring water. Secondly, when the value of P / A is between 0.6 and 1.9, the gap between the side of the dustproof cover 20 away from the kettle inner container 120 and the kettle spout 110 is 0.

[0074] Table 1

[0075]

[0076] Furthermore, with the dust cover 20 covering the spout 110 and the kettle body 10 placed horizontally, the center of gravity 201 of the dust cover is located on the side of the pivot 220 facing the spout 110, that is, as... Figure 4 , Figure 6 and Figure 26 As shown, the center of gravity 201 of the dust cover is biased towards the water outlet side of the spout 110 relative to the vertical line passing through the center 221 of the rotating shaft. This causes the dust cover 20 to have a rotational tendency in the opposite direction (i.e., the rotating shaft 220 is away from the water outlet side of the spout 110) under the action of gravity. Therefore, after pouring, as the kettle body 10 returns to an upright position, the dust cover 20 can automatically rotate under the action of gravity and then close onto the spout 110, preventing dust or foreign objects from entering the spout 110. This is convenient and hygienic, and there is no need to manually close the dust cover 20. Furthermore, setting the center of gravity 201 of the dust cover on the water outlet side of the rotating shaft 220 facing the spout 110 also ensures that even if the kettle body 10 is placed on a slightly tilted table, the dust cover 20 will remain closed under the action of gravity. The spout 110 can effectively support the dust cover 20 while ensuring a close fit between the dust cover 20 and the spout 110. In addition, the dust cover 20 at the spout 110 also serves to prevent liquid from overflowing from the spout 110 during boiling, improving the user experience. Furthermore, the dust cover 20 reduces heat loss from the kettle body 10, increasing the heating speed during boiling and allowing for faster heating to the designated temperature. After boiling, it also slows down the cooling rate within the kettle body 10, resulting in better heat retention. Table 2 below shows experimental data on the effect of the presence or absence of the dust cover 20 on the heating speed. As can be seen from the data in Table 2, under the same capacity and heating power, the kettle with the dust cover 20 heats up faster. The dust cover 20 increases the heating rate, allowing the kettle with the dust cover 20 to heat to the cut-off temperature in a shorter time.

[0077] Table 2

[0078] Test item Without dust cover With dust cover Advantages of dust cover Volume 1.5L, heating power 1500W, heating time from 20° to jump off 6 minutes and 20 seconds 6 minutes and 13 seconds 7 seconds faster Volume 1.5L, heating power 1500W, heating time from 96° to jump off 23.3 seconds 18.1 seconds 5.2 seconds faster

[0079] The experimental data about the influence of the dust cover 20 on the degree of splashing water around the kettle body during the boiling process is shown in Table 3 below. The qualified evaluation standard of the splashing water test is that the diameter of the water droplets splashed onto the desktop around the kettle body after the boiling is completed is less than or equal to 2 mm. The splashing water problem of the kettle during boiling generally occurs between the time when the liquid is close to the boiling state and the jumping-off time. Since the dust cover 20 can block the splashing water at the spout 110 and shorten the jumping-off time, the water droplets splashed onto the desktop around the kettle body during the boiling process can be greatly reduced. According to the test results in Table 3, under the same capacity and heating power, the kettle without the dust cover 20 has water droplets splashed onto the desktop around the kettle body during the boiling process, and the diameter of the water droplets falling onto the desktop is about 8 mm, which is large and can easily scald the user. The kettle with the dust cover 20 has almost no water droplets splashed onto the desktop around the kettle body during the boiling process, and the anti-splashing water effect is good.

[0080] Table 3

[0081]

[0082] As can be understood, as shown in Figure 23 and Figure 24 , the minimum inclination angle of the kettle body 10 during pouring is the angle at which the kettle body 10 needs to be inclined when the liquid in the kettle reaches the rated maximum water level and the water can just be poured out. The smaller the diameter of the inner container, the larger the minimum inclination angle of the kettle body 10 during pouring. The height difference between the rated maximum liquid level and the spout 110 represents the anti-splashing water height, and the larger the anti-splashing water height, the larger the minimum inclination angle of the kettle body 10 during pouring.

[0083] The comparison experimental data about the ratio of the water flow width to the water flow thickness of the water flowing out of the spout 110 during pouring of the dust cover kettle 1 and the dust cover kettle 2 in the related art, and the ratio of the water flow width to the water flow thickness of the water flowing out of the spout 110 during pouring of the dust cover kettle adopting the embodiment of the present application is shown in Table 4 below. The experimental data is obtained under the same capacity and spout diameter. According to the data in Table 4, the dust cover kettle in the related art has a larger ratio of the water flow width to the water flow thickness during pouring, and the water flow is more dispersed, and the water flow generally flows out in a sheet shape, which is more likely to spill during pouring the water in the kettle into the thermos kettle. The dust cover kettle of the embodiment of the present application has a more concentrated water flow during pouring, and the water flow basically flows out in a column shape, which is not easy to spill.

[0084] Table 4

[0085] Test item Dustproof kettle 1 in the related art Dustproof kettle 2 in the related art Dustproof kettle of the present application Water flow width and thickness ratio 2.2-2.8 3-3.5 1.0-1.5

[0086] The principle is explained as follows: Figure 2 , Figure 3 , Figure 4 , Figure 6, Figure 23 , Figure 24 and Figure 26 As shown in Figure 23 , Figure 24 , and Figure 26 , the angle formed by the line connecting the center of gravity 201 of the dust-proof cover and the center 221 of the rotating shaft with the vertical line (mid-perpendicular) passing through the center 221 of the rotating shaft is A, and the minimum tilting angle of the kettle body 10 when pouring water with the rated capacity is P. As long as A < P is ensured, the dust-proof cover 20 can be guaranteed to automatically open at the starting angle of pouring water. The specific description is as follows: The center of gravity 201 of the dust-proof cover is close to the water outlet side of the spout 110. Therefore, in the normal state, the spout 110 is on the right side of the kettle body 10. Under the action of gravity, the dust-proof cover 20 has a tendency to rotate downward, so the dust-proof cover 20 can cover the spout 110 and is supported by the spout 110. When the kettle body 10 is tilted to pour water, the spout 110 moves downward, and the right side of the dust-proof cover 20 loses support. Under the action of gravity, it rotates clockwise around the rotating shaft 220 until the center of gravity 201 of the dust-proof cover is below the mid-perpendicular of the rotating shaft 220, that is, when the kettle body rotates an angle A from the horizontal placement position, the dust-proof cover 20 reaches equilibrium and no longer rotates. When the kettle body 10 continues to be tilted to pour water, the spout 110 and the dust-proof cover 20 are separated, and the spout 110 is opened.

[0087] As Figures 1 to 4 , Figure 6 , Figure 7 , Figures 18 to 20 , Figures 26 to 29 As shown in Figures 1 to 4 , Figure 6 , Figure 7 , Figures 18 to 20 , Figures 26 to 29 , when the kettle body 10 is tilted to pour water, the dust-proof cover 20 rotates clockwise together with the kettle body 10. The angle formed by the center of gravity of the dust-proof cover 20 and the vertical line passing through the center 221 of the rotating shaft is A. Therefore, when the kettle body 10 rotates an angle of P, the rotation angle of the dust-proof cover 20 relative to the rotating shaft 220 is P - A.The larger the value of P - A, the larger the opening angle of the dust-proof cover 20 relative to the spout 110. Therefore, the closer the center of gravity 201 of the dust-proof cover is to the vertical line passing through the center 221 of the rotating shaft, the smaller the angle A, the larger the value of P - A, and the larger the automatic opening angle of the dust-proof cover 20, which can ensure that the water poured out from the spout 110 does not touch the dust-proof cover 20 and the water flow will be smoother.

[0088] If it is contrary to this solution: If the center of gravity of the dust-proof cover 20 is far from the vertical line passing through the center 221 of the rotating shaft and the value of A is too large, when A > P, under the action of gravity, when the kettle body 10 is tilted at an angle of P, the dust-proof cover 20 will always follow the spout 110, and the dust-proof cover 20 needs to be pushed by the flowing water to open. At this time, the dust-proof cover 20 has an obstructive effect on the water flow, the water flow is not concentrated, and the pouring experience is very poor.

[0089] As Figure 2 , Figure 3 and <000026As shown, when the water level in the kettle body 10 is low and a large angle is needed to pour water, the dustproof cover 20 can be automatically deflected to a larger angle under the action of gravity, ensuring that the cover body 210 is still not in contact with the water flow, and ensuring the smoothness of the water flow.

[0090] In some embodiments, the dustproof kettle further comprises: a counterweight part 240, which is welded, detachably connected or integrally arranged with the dustproof cover 20. In this way, the counterweight part 240 can be used to adjust the center of gravity without changing the shape of the dustproof cover 20.

[0091] In some embodiments, as shown in Figures 4 to 7 , Figures 8 to 10 , Figure 13 , Figure 14 , Figure 19 , Figure 20 and Figures 26 to 28 , the dustproof cover 20 comprises a cover body 210 and a connecting seat 230, the connecting seat 230 is connected with the cover body 210, and the rotating shaft 220 is integrally arranged on the side wall of the connecting seat 230; the kettle body 10 is provided with a supporting shaft hole 113, and the rotating shaft 220 is rotatably arranged in the supporting shaft hole 113, so that the dustproof cover 20 is rotatably connected with the kettle body 10.

[0092] In these embodiments, the connecting seat 230 and the rotating shaft 220 are of an integrated structure, which has good mechanical properties, can improve the connection strength between the connecting seat 230 and the rotating shaft 220, and can be integrally manufactured, mass-produced, improve the integrity of the dustproof cover 20, reduce the number of parts, and reduce the installation process. Further, the cooperation of the rotating shaft 220 and the supporting shaft hole 113 can ensure the free rotation of the rotating shaft 220, and the structure is simple and convenient to install.

[0093] Although the above describes the case that the rotating shaft 220 is arranged on the connecting seat 230 and the supporting shaft hole 113 is arranged on the kettle body 10, but the present application is not limited thereto, according to another aspect of the embodiments of the present application, the positions of the rotating shaft 220 and the supporting shaft hole 113 can be interchanged.

[0094] It can be understood that the rotating shaft 220 is of an integrated structure with the connecting seat 230 or the kettle body 10, that is, in the case that the rotating shaft 220 is arranged on the connecting seat 230, the rotating shaft 220 and the connecting seat 230 are of an integrated structure, and in the case that the rotating shaft 220 is arranged on the kettle body 10, the rotating shaft 220 and the kettle body 10 are of an integrated structure.

[0095] In some embodiments, the connecting seat 230 is provided with a rotating shaft accommodating hole, the kettle body 10 is provided with a support shaft hole 113, the rotating shaft 220 is inserted into the rotating shaft accommodating hole and the support shaft hole 113, so that the dustproof cover 20 is rotationally connected with the kettle body 10. The rotating shaft 220 is independently arranged, and the cooperation of the rotating shaft 220 with the rotating shaft accommodating hole and the support shaft hole 113 can ensure the free rotation of the rotating shaft 220, and the structure is simple and convenient to install.

[0096] In some embodiments, as shown in Figure 21 , the top of the spout 110 is provided with a cross beam 111, the bottom surface of the cross beam 111 is provided with two mounting pieces 112 protruding downward, in the case that the kettle body 10 is provided with the support shaft hole 113, the number of the support shaft hole 113 is two, and the two support shaft holes 113 are arranged on the two mounting pieces 112 respectively and oppositely; in the case that the kettle body 10 is provided with the rotating shaft 220, the number of the rotating shaft 220 is two, and the two rotating shafts 220 are arranged on the sides of the two mounting pieces 112 facing each other respectively and oppositely. In this way, the two mounting pieces 112 arranged on the bottom surface of the cross beam 111 and the support shaft holes 113 arranged thereon are used to install the rotating shaft 220, the structure is simple and easy to process and produce, and arranging the support shaft hole 113 on the protruding mounting piece 112 is also conducive to the assembly between the support shaft hole 113 and the rotating shaft 220. In actual assembly, the rotating shaft 220 can be inserted between the two mounting pieces 112 with force, so that the two mounting pieces 112 are slightly deformed outward, so that the rotating shaft 220 can enter the support shaft hole 113, facilitating the assembly of the rotating shaft 220 and the support shaft hole 113.

[0097] Although the above describes the case that the support shaft hole 113 is arranged on the mounting piece 112 and the rotating shaft 220 is arranged on the connecting seat 230, but the present application is not limited thereto. According to another aspect of the embodiments of the present application, the positions of the rotating shaft 220 and the support shaft hole 113 can be interchanged.

[0098] In some embodiments, as shown in Figures 6 to 7 , Figures 8 to 10 , Figure 13 , Figure 14 , Figure 19 , Figure 20 and Figures 26 to 28As shown, the dustproof kettle further comprises a counterweight part 240 which is detachably connected with the dustproof cover 20. It can be understood that, in order to achieve a better counterweight effect, the counterweight part 240 and the cover body 210 are generally made of different materials, and the specific gravity of the counterweight part 240 is greater than that of the cover body 210. If the counterweight part 240 and the cover body 210 are designed as an integral structure or a structure connected by welding, the process is relatively complex, and the processing and production steps are more. The embodiment of the present application sets that the counterweight part 240 is detachably connected with the cover body 210, which can simplify the assembly process between the counterweight part 240 and the cover body 210, is conducive to processing and production, and also can disassemble the counterweight part 240 for cleaning, which is conducive to the cleaning of the product.

[0099] Of course, the embodiment of the present application can also not additionally set the counterweight part 240, as shown in Figure 3 、 Figure 4 .

[0100] In some embodiments, as shown in Figure 10 and Figure 14 , the connecting seat 230 is provided with a containing groove with an opening 235, and the counterweight part 240 can be installed into or taken out of the containing groove through the opening 235. In these embodiments, the connecting seat 230 provides installation space for the counterweight part 240, and the containing groove with the opening 235 is arranged in the connecting seat 230. During assembly, the counterweight part 240 can be pushed into the containing groove through the opening 235, which is convenient to operate and simple to assemble.

[0101] The principle of the setting position of the counterweight part 240 is analyzed as follows: as shown in Figure 2 and Figure 6 , in order to facilitate the following analysis, the bisection of the dustproof cover 20 about the pivot 220 is divided into two areas when the kettle body 10 is normally placed vertically, the part close to the kettle body 10 is called the dustproof cover balance area I, and the part away from the kettle body 10 is called the dustproof cover blocking spout area J. When pouring water, the kettle body 10 is inclined to the side of the spout 110 relative to the vertical direction, and the space height h available for smooth water flow in the spout 110 is the distance from the lowest point of the dustproof cover balance area I to the inner wall of the spout 110. The value of h is affected by the size X of the distance from the farthest end of the dustproof cover balance area I to the center 221 of the pivot. In the same spout 110 structure, the larger the value of X, the smaller the value of h. In order to ensure the water flow speed and facilitate the user to pour water, the larger the value of h, the better. Therefore, we need to limit the value of X as much as possible to ensure a sufficient value of h to meet the requirement of fast pouring.

[0102] As shown in Figure 6 , when the kettle body 10 is normally placed, the center of gravity 201 of the dustproof cover is on the right side of the vertical line passing through the center 221 of the pivot, forming an angle A°. As shown in Figure 7As shown, when the kettle body 10 is tilted to pour water, the center of gravity 201 of the dust cover 20 has been deflected to the left of the vertical line passing through the center 221 of the rotation shaft, forming an angle a°, before the dust cover starts to rotate automatically. Therefore, the angle of the clockwise rotation of the kettle body 10 from the normal placement of the kettle body 10 to the start of the automatic rotation of the dust cover 20 is: P = A + a.

[0103] In order to make the dust cover 20 open automatically as soon as possible, the smaller the P value is, the better. That is, if the value of a is unchanged, the smaller the angle A is, the better, that is, the center of gravity 201 of the dust cover is closer to the vertical line passing through the center 221 of the rotation shaft. At the same time, under the condition that the size of the spout 110 is constant, the value of X should be limited as much as possible to ensure a sufficient value of h to meet the requirement of fast pouring. Since there is no extra space in the spout 110 to lengthen the weight portion 240 to reduce the angle A in order to ensure the value of h, the application tries to move the weight portion 240 of the balance area I of the dust cover to the left as much as possible, that is, the closer the weight portion 240 is to the kettle body 10, the more conducive to the automatic opening of the dust cover 20 as soon as possible.

[0104] In some embodiments, the weight portion 240 and the cover body 210 are made of different materials, and the specific gravity of the weight portion 240 is greater than that of the cover body 210. In this way, it is more conducive to adjusting the center of gravity of the dust cover 20 as a whole by adjusting the position of the weight portion 240.

[0105] In some embodiments, as an example, the weight portion 240 can be a metal block, and the cover body 210 can be a plastic piece, and the specific gravity of the metal block is much greater than that of the plastic piece, which is more conducive to adjusting the center of gravity of the dust cover 20 as a whole by adjusting the position of the weight portion 240. Of course, the cover body 210 can also be made of a metal sheet or other materials, which will not be listed one by one here.

[0106] In some embodiments, as shown, Figures 8 to 14 The connecting seat 230 includes a support plate 232 and a clamping jaw 233, the clamping jaw 233 is arranged at the end of the support plate 232 extending along the circumferential direction of the kettle body 10, the clamping jaw 233 can cover the edge of the weight portion 240, and the clamping jaw 233 and the support plate 232 form an accommodating groove.

[0107] In the embodiments, the connecting seat 230 comprises a support plate 232 and clamping claws 233 located at both ends of the support plate 232, the connecting seat 230 is generally in the shape of a C in cross section, the clamping claws 233 are arranged at the ends of the support plate 232 extending along the circumferential direction of the kettle body 10, so that the clamping claws 233 can be arranged in the gap space between the circular kettle body 10 and the weight part 240, the gap space is fully utilized, so that the weight part 240 can be located as close to the kettle body 10 as possible, and the two ends of the weight part 240 can be covered by the C-shaped structure, so that the weight part 240 and the dust cover 20 can be reliably and effectively connected, the excellent performance of the automatic opening of the dust cover 20 is ensured, and the reliability of the structure is ensured.

[0108] In some embodiments, as shown in Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 and Figure 14 , the two ends of the support plate 232 extending along the circumferential direction of the kettle body 10 are each provided with a clamping claw 233, and a gap 231 is formed between the two clamping claws 233, and the weight part 240 is adjacent to the kettle body 10 via the gap 231.

[0109] In some embodiments, the connecting seat 230 further comprises a bottom support 236 arranged below the support plate 232 and connected with the support plate 232, the bottom support 236 can support the weight part 240, and the bottom support 236 is provided with a hollow region. In this way, since the weight part 240 always has a downward falling tendency under the action of gravity during use, the bottom support 236 can reliably support the weight part 240 upward, so as to ensure the stability and reliability during use in hot and cold states or at various angles. Further, the bottom support 236 is provided with a hollow region, so that the condensed water in the connecting seat 230 can quickly flow out via the hollow region, avoiding water storage in the connecting seat 230.

[0110] In some embodiments, as an example, optionally, as shown in Figure 13 、 Figure 14 , the bottom supports 236 are distributed on both sides of the support plate 232 along the length direction, support the weight part 240 at both ends, and the weight part 240 is more stable under force. The disconnected structure in the middle of the bottom support 236 forms a hollow region, and the condensed water can quickly flow out via the hollow region, so that the structure of the bottom support 236 is simple, which is beneficial to processing and production.

[0111] Further, for the specific structure of the connecting seat 230, in some embodiments, as an example, optionally, each of the clamping claws 233 comprises a first connecting plate and a second connecting plate connected thereto, the first connecting plate is connected to the end of the support plate 232 in the length direction and extends towards the kettle body 10, leaving space for the thickness of the counterweight part 240, and the second connecting plate extends towards the center of the counterweight part 240, so that the cross-sectional shape of the connecting seat 230 is generally C-shaped, and the gap 231 is formed between the two second connecting plates, and the second connecting plates of the two clamping claws 233 are located in the gap space between the circular kettle body 10 and the counterweight part 240, so that the gap 231 is as close to the kettle body 10 as possible, thereby ensuring that the counterweight part 240 can be located as close to the kettle body 10 as possible. Figure 11 and Figure 12 Further, for the specific structure of the connecting seat 230, in some embodiments, as an example, optionally, each of the clamping claws 233 comprises a first connecting plate and a second connecting plate connected thereto, the first connecting plate is connected to the end of the support plate 232 in the length direction and extends towards the kettle body 10, leaving space for the thickness of the counterweight part 240, and the second connecting plate extends towards the center of the counterweight part 240, so that the cross-sectional shape of the connecting seat 230 is generally C-shaped, and the gap 231 is formed between the two second connecting plates, and the second connecting plates of the two clamping claws 233 are located in the gap space between the circular kettle body 10 and the counterweight part 240, so that the gap 231 is as close to the kettle body 10 as possible, thereby ensuring that the counterweight part 240 can be located as close to the kettle body 10 as possible.

[0112] Of course, the present scheme is not limited to this, and it can be understood that those skilled in the art can correspondingly design the clamping claws 233 as other structures arranged at the edge of the first connecting plate capable of wrapping the edge of the counterweight part 240, and the number of clamping claws 233 can be one or more, and multiple clamping claws 233 can be distributed along the length direction of the edge of the support plate 232, which will not be enumerated one by one here for specific cases, but all belong to the protection scope of the present scheme without departing from the design concept.

[0113] Further, the first connecting plate and the second connecting plate are in the shape of a long strip, the long strip-shaped first connecting plate and the second connecting plate have a large area, and the contact area between the long strip-shaped first connecting plate and the second connecting plate and the counterweight part 240 is large, which can reliably wrap and connect the two ends of the counterweight part 240 by the C-shaped structure, and can further ensure that the counterweight part 240 and the dustproof cover 20 can be reliably and effectively connected, thereby ensuring the excellent performance of the automatic opening of the dustproof cover 20 and the reliability of the structure.

[0114] In some embodiments, as shown in Figures 6 to 10 , Figure 13 , Figure 14 , Figure 19 , Figure 20 and Figures 26 to 28 , one of the connecting seat 230 and the counterweight part 240 is provided with a buckle 242 protruding therefrom, and the other is provided with a buckle hole 234 matched with the buckle 242, and the buckle 242 and the buckle hole 234 are buckled to connect the connecting seat 230 and the counterweight part 240. By setting in this way, when the counterweight part 240 is pushed into the connecting seat 230, the buckle 242 and the buckle hole 234 can be automatically buckled, so that the assembly between the counterweight part 240 and the connecting seat 230 is simple, and the connection between the two can be completed after installation, without the need for additional connection processes, thereby greatly saving the assembly time.

[0115] Further, in some embodiments, as an example, optionally, the top surface or the bottom surface of the connecting seat 230 is provided with an opening 235 for mounting the weight part 240 into the connecting seat 230, and the weight part 240 is pushed into the connecting seat 230 from the opening 235, so that the buckle 242 and the buckle hole 234 can be automatically buckled, and the assembly is simple.

[0116] Further, as an example, one of the buckle 242 and the buckle hole 234 is arranged on the first connecting plate, and the other is arranged on the side wall of the weight part 240.

[0117] In order to further reduce the size of the weight part 240, in some embodiments, as shown in Figure 17 , Figure 18 , Figure 19 and Figure 20 , the upper part of the kettle body 10 is inclined to the inside of the kettle body 10, so that the upper part of the kettle body 10 has an inclined structure with a small upper end and a large lower end, and the weight part 240 is arranged from the upper end to the lower end when the cover body 210 is covered on the kettle spout 110. By such arrangement, the upper part of the weight part 240 can be inclined relative to the central axis of the kettle body 10, and the kettle body 10 can be shaped and fitted to the kettle body 10, so that the center of gravity of the weight part 240 is as far away from the rotating shaft 220 as possible, and the force arm of the center of gravity of the weight part 240 to the rotating shaft 220 is increased. According to the principle that the moment is equal to the product of the force and the force arm, increasing the force arm can reduce the weight of the weight part 240 under the condition of keeping the same moment, so that the same effect of opening the dustproof cover 20 can be achieved by using a smaller weight part 240, and the dustproof cover 20 can be automatically opened when pouring water, effectively avoiding the contact between the water flow and the dustproof cover 20, and ensuring the quality of the water flow.

[0118] In some embodiments, as shown in Figure 18 and Figure 20 , the angle B between the weight part 240 and the vertical direction is 0° to 45° when the cover body 210 is covered on the kettle spout 110, so as to be as far away from the rotating shaft 220 as possible and ensure the opening effect of the dustproof cover 20.

[0119] In some embodiments, the rotating shaft 220 is arranged in the kettle spout 110, and the weight part 240 is located on the side of the rotating shaft 220 facing the kettle body 10. The rotating shaft 220 is arranged in the accommodating cavity and is not easily affected by the outside world, and even if the cover body 210 and the kettle cover are opened, the rotating shaft 220 will not be contacted, so that the rotating shaft 220 is not easily damaged, and the reliability of the automatic opening and closing function of the dustproof cover 20 is ensured.

[0120] In some embodiments, as shown in Figure 25 , Figure 26 and Figure 27As shown, when the lid body 210 is closed onto the spout 110, the end of the lid body 210 away from the pot body 10 is lower than the horizontal plane where the center 221 of the pivot is located.

[0121] In these embodiments, with the lid body 210 closed on the spout 110, the end of the lid body 210 away from the kettle body 10 is lower than the center 221 of the pivot. By setting the end of the lid body 210 away from the kettle body 10 to be lower, the gravitational lever arm of the dust cover 20 is increased. Thus, without changing the weight of the dust cover 20, the torque of the automatic rotation of the dust cover 20 is increased, enhancing the automatic opening and closing capability of the dust cover 20. This facilitates the smooth and automatic opening of the dust cover 20 during the process of pouring water while tilting the kettle body 10, ensuring the reliability of the automatic opening and closing function of the dust cover 20.

[0122] In some embodiments, such as Figure 25 , Figure 26 and Figure 27 As shown, with the lid body 210 closed onto the spout 110, the lid body 210 tilts downwards from the end closer to the pot body 10 to the end farther from the pot body 10, with the end of the lid body 210 closer to the pot body 10 being higher than the horizontal plane where the top of the rotating shaft 220 is located. This arrangement, where the end of the lid body 210 closer to the pot body 10 is higher and the end farther from the pot body 10 is lower, allows the rotating shaft 220 and other structures to be covered within the spout 110, resulting in a more rational structural design.

[0123] like Figure 28 As shown, when water is poured from the kettle body 10, before the dust cover 20 starts to rotate automatically, it is affected by the following forces: 1) The supporting force F1 of the spout 110 on the cover body 210, with a lever arm of L1. As the kettle body 10 rotates clockwise, F1 approaches 0. 2) The frictional force F2 of the support shaft hole 113 on the rotating shaft 220, with a lever arm of R. 3) The weight of the dust cover 20 itself, F3, with a lever arm of L3, and the distance between the center of gravity 201 of the dust cover and the perpendicular bisector of the rotating shaft 220.

[0124] Torque (M): The product of force (F) and lever arm (L). That is, M = F × L. Where the lever arm L is the distance from the axis of rotation 220° to the force, and F is the vector force. Therefore, frictional torque is the product of frictional force and frictional lever arm, where the frictional lever arm is R.

[0125] Before the dust cover 20 starts to rotate automatically, it maintains torque balance. As the kettle body 10 rotates, F1 can rotate to a position that is infinitely close to 0. At this time, the dust cover 20 is at the critical point of the open state. In this state, we can obtain the torque M of the automatic rotation of the dust cover 20 as: M = F3 × L3 - F2 × R.

[0126] Therefore, it can be concluded that: with the weight F3 of the dust cover 20 remaining constant, the larger the lever arm L3, the greater the torque M of the automatic rotation of the dust cover 20 under the action of gravity. While keeping the size of the cover body 210 constant, a larger gravitational lever arm L3 can be obtained by making the farthest point of the dust cover 20 from the body of the pot lower than the center 221 of the rotation axis.

[0127] Furthermore, such as Figure 28 As shown, the relationship between the lever arm L3 of gravity and the distance L5 from the center of gravity 201 of the dust cover to the center of the rotating shaft 221 is: L3 = L5 × sina, where a is the angle between the line connecting the center of gravity 201 of the dust cover and the center of the rotating shaft 221 and the vertical line passing through the center of the rotating shaft 221 when the kettle body 10 is in the minimum tilt angle for pouring water. Specifically, when the kettle body 10 is tilted to pour water, before the dust cover 20 starts to rotate automatically, the center of gravity 201 of the dust cover has already shifted to the side of the vertical line passing through the center of the rotating shaft 221 closer to the kettle body 10, forming an angle a°. The minimum tilt angle of the kettle body 10 when pouring water refers to the angle at which the kettle body 10 needs to tilt to just pour out the water when the liquid in the kettle reaches the rated maximum water level. According to M = F3 × L3 - F2 × R, we can obtain: M = F3 × L5 × sina - F × R.

[0128] As the kettle body 10 tilts, when the kettle body 10 rotates to the tilt angle α, the greater the distance L5 from the center of gravity 201 of the dust cover to the center 221 of the rotating shaft, the greater the torque M of the automatic rotation of the dust cover 20. The center of gravity 201 of the dust cover is always below the center 221 of the rotating shaft. Therefore, while ensuring that the size of the cover body 210 remains unchanged, the lower the center of gravity of the dust cover 20, the better. In this embodiment, by making the farthest point of the dust cover 20 from the kettle body 10 lower than the horizontal plane where the center 221 of the rotating shaft is located, the center of gravity 201 of the dust cover is as low as possible, so that L5 is as large as possible, and thus the gravitational lever arm L3 is larger. Under the same weight F3 of the dust cover 20, the torque M of the automatic rotation of the dust cover 20 is larger, and the automatic opening and closing ability of the dust cover 20 driven by F3 is stronger.

[0129] The following explanation, in conjunction with the accompanying drawings and comparisons with related technologies, illustrates the effect of the dust cover 20 being lower than the center 221 of the pivot point at the end furthest from the pot body 10. Figure 27 As shown, Figure 27 The dashed line in the middle indicates the location of the cover body 210a in the related technology. Figure 27 In the related art shown, the end of the cover body 210a away from the pot body 10 is higher than the horizontal plane where the center 221 of the pivot is located. The distance from the center of gravity 201a of the dust cover to the center 221 of the pivot is L6. Figure 27The solid line part in the figure shows a schematic structural diagram of the dust-proof cover 20 according to an embodiment of the present application. One end of the cover body 210 away from the kettle body 10 is lower than the center 221 of the rotating shaft. Among them, the distance from the center of gravity 201 of the dust-proof cover to the center 221 of the rotating shaft is L5. By comparing the position of the center of gravity 201a of the dust-proof cover in the related art with the position of the center of gravity 201 of the dust-proof cover in the embodiment of the present application, it can be known that the center of gravity 201a of the dust-proof cover in the related art moves upward relative to the center 221 of the rotating shaft. That is to say, the distance from the center of gravity 201a of the dust-proof cover to the center 221 of the rotating shaft becomes smaller, that is, L6 < L5. Therefore, when the dust-proof cover 20 in the related art and the dust-proof cover 20 in this embodiment have the same deflection angle a, the lever arm L3 of the center of gravity 201a of the dust-proof cover in the related art will be smaller. For the dust-proof cover 20 of the same weight, F3×L3 will also be smaller, and the ability to overcome external influences will be smaller, and the reliability of the automatic opening and closing of the dust-proof cover 20 will be smaller.

[0130] In addition, according to M = F3×L3 - F2×R, it can also be obtained that when the frictional force of the support shaft hole 113 on the rotating shaft 220 is the same, the smaller the radius R value of the rotating shaft 220, the more beneficial it is to the automatic rotation of the dust-proof cover 20. Therefore, in the embodiment of this aspect, the size range of the radius R of the rotating shaft 220 is set as R ≤ 3 mm.

[0131] In order to facilitate the realization that one end of the cover body 210 away from the kettle body 10 is lower than the center 221 of the rotating shaft, in some embodiments, when the cover body 210 is in a state of being closed on the spout 110 and the dust-proof kettle is placed vertically, the cover body 210 slopes downward from the end close to the kettle body 10 to the end away from the kettle body 10, and the end of the cover body 210 close to the kettle body 10 is higher than the horizontal plane where the top end of the rotating shaft 220 is located. With such a setting, the end of the cover body 210 close to the kettle body 10 is higher and the end away from the kettle body 10 is lower, which can cover structures such as the rotating shaft 220 inside the spout 110, and the structural setting is more reasonable.

[0132] In some embodiments, the cover body 210 can be a plane or an arc surface 241. It should be noted that when the cover body 210 is an arc surface 241, it means that the cover body 210 is an arc-shaped panel with a certain thickness, that is, the upper surface and the lower surface of the cover body 210 are arc surfaces 241, and the upper edge and the lower edge of the cross-section of the cover body 210 along the vertical direction are both arc-shaped lines.

[0133] As Figure 3 shown, in some embodiments, when the cover body 210 is in a state of being closed on the spout 110, the included angle H between the connection line between the lowest point of the end of the cover body 210 away from the kettle body 10 and the center 221 of the rotating shaft and the horizontal line is greater than 0° and less than or equal to 45°.

[0134] In some embodiments, as Figure 26 andFigure 27 As shown in FIG. 14, in the state that the cover body 210 is closed to the spout 110, the angle between the line connecting the lowest point of the end of the cover body 210 away from the kettle body 10 and the center 221 of the rotating shaft and the horizontal line is greater than 0° and less than or equal to 45°.

[0135] In these embodiments, the range of the angle can quantify the degree that the end of the cover body 210 away from the kettle body 10 is lower than the center 221 of the rotating shaft, and the angle is greater than 0° and less than or equal to 45°. On the one hand, it can ensure that the end of the cover body 210 away from the kettle body 10 is lower than the center 221 of the rotating shaft, increase the gravity arm, and enhance the automatic opening and closing capability of the dust cover 20, so as to have a better water pouring experience. On the other hand, it can also avoid that the angle is too large, and prevent the center of gravity 201 of the dust cover from being more inclined to the spout 110 during water pouring, which is not conducive to the automatic separation of the dust cover 20 and the spout 110.

[0136] In some embodiments, as shown in FIGS. 15 and 16, the kettle body 10 further comprises a kettle inner container 120, and the spout 110 is mounted outside the kettle inner container 120. The kettle inner container 120 is provided with a water outlet 101 on the side wall, and the top end of the water outlet 101 is lower than the counterweight part 240. Figure 25 Figure 30 As shown in FIGS. 15 and 16, the kettle body 10 further comprises a kettle inner container 120, and the spout 110 is mounted outside the kettle inner container 120. The kettle inner container 120 is provided with a water outlet 101 on the side wall, and the top end of the water outlet 101 is lower than the counterweight part 240. In this way, it can be ensured that the water flow does not contact the counterweight part 240 during water pouring, and the water flow is not affected by the counterweight part 240, so that the water flow is smooth and concentrated.

[0137] When the kettle body 10 is inclined at a large angle for water pouring, the water level will be higher than the top end of the water outlet 101. Since the top end of the water outlet 101 is lower than the lowest point of the dust cover balance region I, the water flow will not contact the components of the dust cover 20, so that the water flow is still smooth.

[0138] ​In some embodiments, in the state that the dust cover 20 covers the spout 110, the angle between the line connecting the center of gravity 201 of the dust cover and the center 221 of the rotating shaft and the vertical line passing through the center 221 of the rotating shaft is greater than or equal to 1° and less than or equal to 25°. In order to ensure that the dust cover 20 can well fit the spout 110 and avoid the dust cover 20 from being raised when placed horizontally, the center of gravity 201 of the dust cover should be located on the side of the rotating shaft 220 facing the spout 110, and the angle between the line connecting the center of gravity 201 of the dust cover and the center 221 of the rotating shaft and the vertical line passing through the center 221 of the rotating shaft is greater than or equal to 1°, so as to ensure that the dust cover 20 can be in a closed state even when the kettle 10 is placed on a slightly inclined table. In order to ensure that the dust cover 20 can be automatically opened under the action of gravity when pouring water, the angle between the line connecting the center of gravity 201 of the dust cover and the center 221 of the rotating shaft and the vertical line passing through the center 221 of the rotating shaft needs to be less than the minimum inclination angle of the kettle 10 when pouring water, and the angle is further limited to be less than or equal to 25°. Within this range, the dust cover 20 can be automatically opened under the action of gravity as the kettle 10 is inclined, and the inclination angle of the kettle 10 when pouring water is not too large to be difficult to operate.

[0139] The following will be described in combination with Figure 23 、 Figure 24 The influence of different diameters of the kettle inner container 120 on the inclination angle when pouring water will be described. As shown in Figure 23 , with the same spout 110 and splash-proof water height, when the inner diameter of the inner container is 160 mm, the inclination angle P of the kettle 10 when starting to pour water is about 16°, Figure 9 wherein W1 is the water surface W1 in the kettle in a static state, and W2 is the water surface W2 in the kettle in a state of starting to pour water. It can be seen that the inclination angle of the water surface will become larger and larger as the water volume decreases.

[0140] As shown in Figure 24 , with the same spout 110 and splash-proof water height, when the inner diameter of the inner container is 80 mm, the inclination angle P of the kettle 10 when starting to pour water is about 24°, Figure 24 wherein W1 is the water surface W1 in the kettle in a static state, and W2 is the water surface W2 in the kettle in a state of starting to pour water. It can be seen that the inclination angle of the water surface will become larger and larger as the water volume decreases.

[0141] In some embodiments, as an example, the dust cover kettle can be an electric kettle, an electric thermos, a health-care kettle, or a water storage kettle, a heat preservation kettle, etc.

[0142] Although the embodiments of the present application have been described in detail above, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application. It should be understood that these modifications and variations will still fall within the spirit and scope of the embodiments of the present application defined by the claims.

Claims

1. A dust-proof pot, characterized by comprising: The dustproof kettle comprises: a kettle body (10) comprising a kettle spout (110); a dust cover (20) arranged at the kettle spout (110) and used for covering the kettle spout (110), the dust cover (20) being rotatably connected to the kettle body (10) through a rotating shaft (220) and capable of opening the kettle spout (110) when the kettle body (10) is tilted to facilitate pouring water; wherein, in a state where the dust cover (20) covers the kettle spout (110), a gravity center (201) of the dust cover is located on a side of the rotating shaft (220) facing the kettle spout (110), and an included angle A formed between a line between the gravity center (201) of the dust cover and a center (221) of the rotating shaft and a vertical line passing through the center (221) of the rotating shaft is smaller than a minimum tilting angle P of the kettle body (10) when the kettle body (10) is in a state of a rated capacity and pouring water.

2. The dust-proof pot according to claim 1, characterized in that, The dustproof kettle further comprises: a counterweight part (240) which is welded, detachably connected or integrally arranged with the dust cover (20).

3. The dustproof kettle according to claim 2, wherein an upper portion of the kettle body (10) is inclined towards the inside of the kettle body (10), and in a case where the dust cover (20) is covered on the kettle spout (110), the counterweight part (240) is inclined from an upper end to a lower end away from the kettle body (10).

4. The dustproof kettle according to claim 2, wherein the kettle body (10) further comprises a kettle inner container (120), the kettle spout (110) is welded or screw-connected to the outside of the kettle inner container (120), a side wall of the kettle inner container (120) is provided with a water outlet (101), and a top end of the water outlet (101) is lower than the counterweight part (240).

5. The dust-proof pot according to claim 2, wherein the dust cover (20) comprises a cover body (210) and a connecting seat (230) connected with the cover body (210), one of a side wall of the kettle body (10) and the connecting seat (230) is provided with a supporting shaft hole (113), and the other is provided with the rotating shaft (220), the rotating shaft (220) is in an integral structure with the connecting seat (230) or the kettle body (10) where the rotating shaft (220) is located, and the rotating shaft (220) is rotatably arranged in the supporting shaft hole (113) to rotatably connect the dust cover (20) and the kettle body (10); or the connecting seat (230) is provided with a rotating shaft accommodating hole, the kettle body (10) is provided with a supporting shaft hole (113), and the rotating shaft (220) is inserted into the rotating shaft accommodating hole and the supporting shaft hole (113) to rotatably connect the dust cover (20) and the kettle body (10).

6. The dustproof kettle according to claim 5, wherein The top of the spout (110) is provided with a crossbeam (111), the bottom surface of the crossbeam (111) is provided with two downward protruding mounting pieces (112), the kettle body (10) is provided with the support shaft holes (113), the number of the support shaft holes (113) is two, and the two support shaft holes (113) are arranged on the two mounting pieces (112) respectively, and the two support shaft holes (113) are oppositely arranged. The kettle body (10) is provided with the rotating shafts (220), the number of the rotating shafts (220) is two, the two rotating shafts (220) are arranged on the sides, facing each other, of the two mounting pieces (112) respectively, and the two rotating shafts (220) are oppositely arranged.

7. The dustproof kettle according to claim 5, characterized in that, The counterweight part (240) is detachably connected with the dustproof cover (20), the connecting seat (230) is provided with a containing groove with an opening (235), and the counterweight part (240) can be installed into or taken out of the containing groove through the opening (235).

8. The dustproof kettle according to claim 7, characterized in that, The connecting seat (230) comprises a support plate (232) and a clamping jaw (233), the clamping jaw (233) is arranged at the end of the support plate (232) extending along the circumferential direction of the kettle body (10), the clamping jaw (233) can wrap the edge of the counterweight part (240), and the clamping jaw (233) and the support plate (232) enclose the containing groove.

9. The dustproof kettle according to claim 8, characterized in that, The connecting seat (230) further comprises a bottom support (236), the bottom support (236) is arranged below the support plate (232) and connected with the support plate (232), the bottom support (236) can support the counterweight part (240), and the bottom support (236) is provided with a hollow region.

10. The dustproof kettle according to claim 7, characterized in that, The clasp (242) is protrusively arranged on one of the counterweight part (240) and the connecting seat (230), and the buckle hole (234) matched with the clasp (242) is arranged on the other one, the clasp (242) and the buckle hole (234) are buckled to connect the counterweight part (240) and the connecting seat (230).

11. The dustproof kettle according to claim 5, characterized in that, In the state that the cover body (210) is covered on the spout (110), the end of the cover body (210) away from the kettle body (10) is lower than the horizontal plane where the center (221) of the rotating shaft is located.

12. The dustproof kettle according to claim 11, characterized in that, In the state that the cover body (210) is covered on the spout (110), the angle between the line connecting the lowest point of the end of the cover body (210) away from the kettle body (10) and the center (221) of the rotating shaft and the horizontal line is greater than 0° and less than or equal to 45°.

13. The dust-proof kettle according to any one of claims 1 to 12, characterized in that, In the state that the dust-proof cover (20) covers the spout (110), the included angle between the line connecting the center of gravity (201) of the dust-proof cover and the center (221) of the rotating shaft and the vertical line passing through the center (221) of the rotating shaft is greater than or equal to 1° and less than or equal to 25°.

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