Kettle lid assembly and liquid heater

Abstract

The invention discloses a kettle cover assembly and a liquid heater. The kettle cover assembly comprises a cover body and a steam box. The cover body is provided with a water outlet nozzle; the steam box is arranged on the cover body, the steam box is provided with a steam inlet, a first steam outlet and a second steam outlet, the steam inlet is communicated with the cooking cavity, the first steam outlet is communicated with the water outlet nozzle, and the second steam outlet is used for being communicated with the steam detection switch module. According to the technical scheme, the purpose of reducing steam emission can be achieved, and a user is prevented from being scalded.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to a kettle lid assembly and a liquid heater. Background Art

[0002] Liquid heaters are widely used in households, such as electric kettles, for boiling water and storing water.

[0003] In the process of boiling water in an electric kettle in the related art, a large amount of high-temperature steam will escape from the water outlet, which is likely to cause accidental scalding to users. Summary of the Invention

[0004] The main object of the present invention is to propose a kettle lid assembly, aiming to reduce the steam emission of the liquid heater.

[0005] To achieve the above object, a kettle lid assembly proposed by the present invention includes:

[0006] A lid body provided with a water outlet; and

[0007] A steam box disposed on the lid body, the steam box being provided with a steam inlet, a first steam outlet, and a second steam outlet, the steam inlet being used for communicating with the cooking cavity, the first steam outlet being communicated with the water outlet, and the second steam outlet being used for communicating with a steam detection switch module;

[0008] Wherein, part of the steam entering from the steam inlet flows to the steam detection switch module through the second steam outlet, and the other part is discharged through the first steam outlet and the water outlet.

[0009] In an embodiment of the present application, the kettle lid assembly further includes a partition member disposed on the steam box and / or the lid body, the partition member being used for blocking the gas path from the steam inlet to the water outlet, and for conducting the gas path from the steam inlet to the water outlet when the steam pressure in the steam box reaches a preset value.

[0010] In an embodiment of the present application, the partition member is hermetically disposed on the steam box and / or the lid body to block the gas path between the steam inlet and the water outlet; the partition member is provided with a pressure relief hole.

[0011] In an embodiment of the present application, the partition member is disposed at the first steam outlet to hermetically connect the steam box and the lid body.

[0012] In an embodiment of the present application, the partition member is a sealing plug.

[0013] In an embodiment of the present application, the pressure relief hole is a round hole, a slotted hole or a cross hole.

[0014] In an embodiment of the present application, the water outlet nozzle is provided on one side of the cover body, and the cover body is provided with a transition cavity communicating the water outlet nozzle with the first steam outlet. A water passing hole is provided at the bottom of the transition cavity;

[0015] The kettle lid assembly further includes a water outlet valve assembly provided on the cover body, and the water outlet valve assembly is used to block or open the water passing hole.

[0016] In an embodiment of the present application, the water outlet valve assembly includes:

[0017] A water outlet valve body movably provided at the water passing hole;

[0018] A button provided on the upper surface of the cover body; and

[0019] A transmission mechanism drivingly connected between the button and the water outlet valve body, for driving the water outlet valve body to move up and down to open or block the water passing hole when the button is pressed;

[0020] Wherein, the pressing direction of the button is not coaxial with the moving direction of the water outlet valve body.

[0021] In an embodiment of the present application, the steam inlet is provided at the bottom of the steam box, and the height positions of the first steam outlet and the second steam outlet are higher than the height position of the steam inlet.

[0022] In an embodiment of the present application, the first steam outlet is arranged close to the water outlet nozzle, and the steam inlet is arranged far from the water outlet nozzle; the second steam outlet is located on the side of the steam inlet away from the first steam outlet.

[0023] In an embodiment of the present application, the steam box includes a cavity expansion section, a straight section and a bending section connected in sequence. The steam inlet is provided at the bottom of the cavity expansion section, the first steam outlet is provided at the end of the bending section, and the second steam outlet is provided on the side of the cavity expansion section away from the bending section;

[0024] Wherein, the gas flow cross-sectional area of the straight section is smaller than the gas flow cross-sectional area of the cavity expansion section.

[0025] In an embodiment of the present application, an air passing hole for communicating the steam detection switch module with the second steam outlet is provided on the side of the cover body away from the water outlet nozzle.

[0026] In an embodiment of the present application, a steam valve cover is connected to the steam inlet, and a movable sealing steel ball is provided in the steam valve cover. The diameter of the sealing steel ball is larger than the diameter of the steam inlet.

[0027] In an embodiment of the present application, the cover body includes:

[0028] A lower cover for being installed on the kettle body; the steam box and the water outlet are both arranged on the lower cover; and

[0029] An upper cover is arranged above the steam box and is assembled with the lower cover.

[0030] To achieve the above object, the present application further provides a liquid heater, including a kettle body and the above-mentioned kettle lid assembly. The kettle body is provided with a cooking cavity, and the kettle lid assembly is movably installed on the kettle body to open or close the cooking cavity.

[0031] In an embodiment of the present application, the kettle body includes a kettle body and a handle. A steam detection switch module is arranged inside the handle, and the steam detection switch module is communicated with the second steam outlet of the steam box.

[0032] In an embodiment of the present application, the steam detection switch module includes:

[0033] A steam connection pipe, which is hermetically connected to the second steam outlet; and

[0034] A switch induction part, which is arranged inside the steam connection pipe; the switch induction part includes a bimetallic strip, a connecting rod and a switch. The connecting rod connects the bimetallic strip and the switch, and the bimetallic strip is used to drive the connecting rod to drive the switch to reset to cut off the circuit when being heated and deformed.

[0035] In the technical solution of the present invention for the kettle lid assembly, a steam box is arranged on the lid body. The steam inlet of the steam box is communicated with the cooking cavity of the kettle body, the first steam outlet of the steam box is communicated with the water outlet, and the second steam outlet is used to be communicated with the steam detection switch module, so that the steam entering from the steam inlet can be divided into two paths. One path flows from the second steam outlet to the steam detection switch module for steam detection, and the other path is discharged from the first steam outlet and the water outlet. With such an arrangement, the steam generated in the cooking cavity can be diverted and then discharged, so as to reduce the amount of steam discharged from the water outlet, achieve the purpose of reducing steam emission, and prevent scalding the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0037] Figure 1 An exploded structural schematic diagram of an embodiment of the liquid heater of the present invention;

[0038] Figure 2 Schematic diagram of the structure of an embodiment of the kettle lid assembly of the present invention;

[0039] Figure 3 Full-sectional schematic diagram of an embodiment of the kettle lid assembly of the present invention;

[0040] Figure 4 is Figure 3 Partial enlarged view at M in

[0041] Figure 5 is Figure 3 Partial enlarged view at N in

[0042] Figure 6 Explosion schematic diagram of the steam box and the lower cover in the embodiment of the present invention;

[0043] Figure 7 Schematic diagram of the structure of the steam box in the embodiment of the present invention;

[0044] Figure 8 Schematic diagram of the structure of the partition member in the embodiment of the present invention;

[0045] Figure 9 Explosion structure schematic diagram of the steam detection switch module in the embodiment of the present invention;

[0046] Figure 10 Assembly structure schematic diagram of the lower cover, the steam box and the kettle body in the embodiment of the present invention;

[0047] Figure 11 Explosion structure schematic diagram of the kettle lid assembly in the embodiment of the present invention.

[0048] Explanation of the reference numerals in the drawings:

[0049]

[0050]

[0051] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0054] At the same time, the meaning of "and / or" or "and / or" that appears throughout the text is as follows. It includes three scenarios. Taking "A and / or B" as an example, it includes the scenario of A, or the scenario of B, or the scenario where both A and B are satisfied simultaneously.

[0055] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] The present invention provides a kettle lid assembly, which is applied to a liquid heater. The liquid heater can be an electric kettle, a health kettle, etc. The liquid heater includes a kettle body 7 and a steam detection switch module 73. The kettle body 7 is provided with a cooking cavity. The kettle lid assembly is movably covered on the kettle body 7 to be able to open or close the cooking cavity. The structure of the kettle lid assembly will be described below.

[0057] In the embodiments of the present invention, as Figures 2 to 5 shown, the kettle lid assembly includes a lid body 1 and a steam box 2.

[0058] The lid body 1 is provided with a water outlet 13; the steam box 2 is arranged on the lid body 1. The steam box 2 is provided with a steam inlet 201, a first steam outlet 202, and a second steam outlet 203. The steam inlet 201 is communicated with the cooking cavity. The first steam outlet 202 is communicated with the water outlet 13. The second steam outlet 203 is communicated with the steam detection switch module 73. Among them, part of the steam entering from the steam inlet 201 flows to the steam detection switch module 73 through the second steam outlet 203, and the other part is discharged through the first steam outlet 202 and the water outlet 13.

[0059] It can be understood that the lid 1 is movably connected to the pot body 7. For example, the lid 1 can be slidably connected or rotatably connected to the pot body 7. When the liquid heater is heating, the lid 1 covers the cooking cavity. The water in the cooking cavity boils to generate steam, and the steam can enter the inner cavity of the steam box 2 through the steam inlet 201 and is divided into two paths. One path flows through the second steam outlet 203 to the steam detection switch module 73. When the steam detection switch module 73 detects that the temperature of the steam reaches the target temperature (for example, when the water has boiled), the power is cut off to make the liquid heater stop heating; the other path is discharged through the first steam outlet 202 and the water outlet 13. With such a setting, the steam generated in the cooking cavity can be shunted before being discharged, so as to reduce the amount of steam discharged from the water outlet 13, achieve the purpose of reducing steam emission, and prevent scalding the user.

[0060] In practical applications, the steam detection switch module 73 can be arranged on the handle of the pot body 7 or can be arranged at the bottom of the pot body 7. When the steam detection switch module 73 is arranged on the handle, after the steam enters the steam box 2, a part of the steam can be introduced into the handle through the second steam outlet 203. When the steam detection switch module 73 is arranged at the bottom of the pot body 7, after the steam enters the steam box 2, a part of the steam can be guided to the bottom of the pot body 7 through the second steam outlet 203.

[0061] In an embodiment of the present application, the lid assembly further includes a partition member 3 provided on the steam box 2 and / or the lid 1. The partition member 3 is used to block the gas path from the steam inlet 201 to the water outlet 13 and is used to conduct the gas path from the steam inlet 201 to the water outlet 13 when the steam pressure in the steam box 2 reaches a preset value.

[0062] In this embodiment, the partition member 3 is hermetically arranged on the steam box 2 and / or the lid 1. The partition member 3 can block the gas path from the steam inlet 201 to the water outlet 13 at the initial stage of steam generation, so as to block the discharge of steam, make most of the steam stay in the steam box 2, contact and condense with the inner wall surface of the relatively low-temperature steam box 2, and achieve the purpose of less steam emission; when enough steam is generated and the steam pressure in the steam box 2 increases to the preset value, the partition member 3 can conduct the gas path from the steam inlet 201 to the water outlet 13, so that the steam can be discharged smoothly to achieve the purpose of pressure relief and prevent potential safety hazards caused by too high pressure in the pot body 7.

[0063] In practical applications, the preset value when the steam pressure increases to the preset value is not limited to a specific numerical value, and it can be determined according to the specific structure of the partition member 3, the capacity of the cooking cavity or the inner cavity size of the steam box 2, etc.

[0064] Optionally, the partition member 3 can be a shrapnel structure, a one-way valve structure or a sealed structure with small holes, etc.

[0065] Exemplarily, the partition member 3 is hermetically provided on the steam box 2 and / or the cover body 1 to block the gas path between the steam inlet 201 and the water outlet 13; the partition member 3 is provided with a pressure relief hole 301.

[0066] In this embodiment, by hermetically providing the partition member 3 with the pressure relief hole 301 on the steam box 2 and / or the cover body 1, the partition member 3 can block the gas path between the steam inlet 201 and the water outlet 13, so that most of the steam can be blocked from being discharged, allowing more steam to stay inside the steam box 2 for condensation. In this way, the purpose of reducing steam emissions can be achieved, preventing scalding the user.

[0067] The partition member 3 is hermetically provided on the steam box 2 and / or the cover body 1. It can be understood that the partition member 3 can be hermetically provided inside the steam box 2, or the partition member 3 can be hermetically provided inside the cover body 1, or the partition member 3 can be hermetically connected to both the steam box 2 and the cover body 1 at the same time. When the partition member 3 is hermetically provided inside the steam box 2, the partition member 3 is located between the steam inlet 201 and the first steam outlet 202 to block the steam from flowing to the first steam outlet 202 for discharge. When the partition member 3 is hermetically provided on the cover body 1, the partition member 3 is located between the first steam outlet 202 and the outlet end of the water outlet 13 to block the steam from being discharged from the water outlet 13. When the partition member 3 is hermetically connected to both the steam box 2 and the cover body 1, the partition member 3 is located between the first steam outlet 202 and the inlet end of the water outlet 13 to block the steam from flowing from the steam box 2 to the water outlet 13, achieving the purpose of reducing steam emissions. In actual application, the specific position of the partition member 3 may not be limited here, as long as it can block the gas path of steam discharge.

[0068] The sealing method between the partition member 3 and the steam box 2 and / or the cover body can be determined according to the actual situation. For example, it can be sealed with a sealing ring, or the partition member 3 can be in interference sealing with the steam box 2 and / or the cover body, etc. The specific structure of the partition member 3 can also be determined according to the actual situation. For example, the partition member 3 can be a partition structure, a sealing plug structure, a blocking block structure, etc.

[0069] After the partition member 3 blocks the gas path of steam discharge, the pressure relief hole 301 on the partition member 3 plays a role in preventing the pressure in the kettle body 7 from being too high. It can be understood that the pressure relief hole 301 can be a small hole, a micro hole, etc. In actual application, the cross-sectional shape of the pressure relief hole 301 can be determined according to the actual situation. For example, the pressure relief hole 301 can be a round hole, a linear hole, or a cross hole, etc.

[0070] Furthermore, as Figure 3 , Figure 4 , Figure 6 and Figure 8 , the partition member 3 is provided at the first steam outlet 202 to hermetically connect the steam box 2 and the cover body 1.

[0071] In this embodiment, by arranging the partition member 3 at the first steam outlet 202, the space inside the steam box 2 is not occupied. In this way, most of the steam can stay in the inner cavity of the steam box 2, increasing the contact area between the steam and the inner wall surface of the steam box 2, thereby increasing the condensation area of the steam, improving the condensation amount of the steam, and being able to further reduce the steam emission. At the same time, more steam can flow from the second steam outlet 203 to the steam detection switch module 73, ensuring the steam amount and steam temperature entering the steam detection switch module 73, improving the detection accuracy, and preventing inaccurate detection due to insufficient steam amount.

[0072] It can be understood that the steam box 2 is connected to the lid body 1 through the first steam outlet 202. By arranging the partition member 3 at the first steam outlet 202 and sealingly connecting the steam box 2 and the lid body 1, it is possible to prevent steam from overflowing from the gas path to other areas of the kettle lid assembly.

[0073] As an example, Figure 8 , the partition member 3 is a sealing plug, and a small hole is provided on the sealing plug for pressure relief. Optionally, the sealing plug can be made of a rubber plug or a silica gel plug, etc.

[0074] In an embodiment of the present application, Figure 3 and Figure 4 , the water outlet nozzle 13 is arranged on one side of the lid body 1. The lid body 1 is provided with a transition cavity 101 communicating the water outlet nozzle 13 and the first steam outlet 202, and a water passing port 102 is provided at the bottom of the transition cavity 101; the kettle lid assembly further includes a water outlet valve assembly arranged on the lid body 1, and the water outlet valve assembly is used to block or open the water passing port 102.

[0075] When the user needs to pour water, water can flow out through the water outlet nozzle 13. That is, when water needs to flow out, the water outlet nozzle 13 communicates with the cooking cavity. Then, a water outlet valve assembly can be arranged on the lid body 1. The water outlet valve assembly is in a closed state when water does not need to flow out and is in an open state when water needs to flow out. In this way, during the heating process of the liquid heater, steam can only be discharged through the steam box 2, and steam is prevented from directly discharging from the cooking cavity through the water outlet nozzle 13, further ensuring the effect of less steam emission.

[0076] By providing a transition chamber 101 inside the lid 1, the transition chamber 101 can communicate with the water outlet nozzle 13, the first steam outlet 202, and the water inlet 102. An outlet valve assembly is provided at the water inlet 102. When the liquid heater is heating, the water inlet 102 is blocked by the outlet valve assembly, so that the transition chamber 101 is not in communication with the cooking chamber, and steam can only enter the transition chamber 101 from the steam box 2 and the first steam outlet 202 and is discharged from the water outlet nozzle 13. When the heating is completed or not heated, when the user needs to pour water, the water inlet 102 can be opened through the outlet valve assembly, so that the water in the cooking chamber can flow smoothly from the water inlet 102 to the water outlet nozzle 103 and be poured out.

[0077] It can be understood that the steam discharge gas path and the water outlet channel of this embodiment share the same transition chamber 101 and water outlet nozzle 13, without the need to specifically provide an independent structure for the gas path or the water outlet channel, simplifying the structural design and making the structural layout more compact. In addition, by providing a transition chamber 101 between the water outlet nozzle 13 and the first steam outlet 202, the condensation space of the steam can be further increased, the condensation effect can be improved, and the steam emission can be reduced.

[0078] As an example, such as Figure 3 and Figure 4 , the first steam outlet 202 can be provided at the upper part of the transition chamber 101, the water inlet 102 can be provided at the bottom of the transition chamber 101, and the water outlet nozzle 13 is connected to the side of the transition chamber 101. With this setting, when the user tilts the liquid heater to pour water, the water can quickly flow out from the water outlet nozzle 13 after entering the transition chamber 101 from the water inlet 102, preventing the water from flowing back into the first steam outlet 202; at the same time, when the outlet valve assembly opens the water inlet 102, the condensed water flowing out from the first steam outlet 202 can quickly flow downward to the water inlet 102 and flow back into the cooking chamber.

[0079] In one embodiment, the outlet valve assembly includes an outlet valve body 41 provided at the water inlet 102, a button 43 provided on the lid 1, and a transmission mechanism that transmits the button 43 and the outlet valve body 41. The user can press the button 43, and the power is transmitted to the outlet valve body 41 through the transmission mechanism to drive the outlet valve body 41 to open or block the water inlet 102.

[0080] Specifically, such as Figure 3 , Figure 6 and Figure 11, The transmission mechanism includes a cam group 421, a transmission plate 422, and a spring 423. The cam group 421 is drivingly connected to the button 43 and the transmission plate 422. The transmission plate 422 is connected to the water outlet valve body 41, and the spring 423 is connected to the transmission plate 422 to reset the transmission plate 422. When the button 43 is pressed, it can drive the cam group 421 to move to drive the transmission plate 422 to press down the water outlet valve body 41 to open the water passing port 102; when the button 43 is pressed again, the cam group 421 leaves the transmission plate 422. At this time, under the reset action of the spring 423, the transmission plate 422 is driven to move upward to drive the water outlet valve body 41 to move upward to block the water passing port 102.

[0081] Optionally, at least a part of the button 43 is exposed on the outer surface of the cover 1.

[0082] As an example, the pressing direction of the button 43 is not coaxial with the moving direction of the water outlet valve body 41. With such a setting, the thickness of the cover 1 can be reduced, and at the same time, the water outlet valve body 41 can be closer to the water outlet nozzle 13. Thus, when pouring water, the water in the cooking cavity is easier to pour out, achieving the effect of labor-saving pouring. Optionally, the button 43 can be set at the middle position of the top surface of the cover 1.

[0083] In one embodiment, as Figure 3 and Figure 4 , the cover 1 is provided with a first steam pipe 111 communicating with the transition cavity 101. The intake end of the first steam pipe 111 is hermetically connected to the first steam outlet 202 through a partition member 3. The pressure relief hole 301 communicates the inner cavity of the steam box 2 with the inner cavity of the first steam pipe 111. By hermetically connecting the partition member 3 to the first steam outlet 202 and the first steam pipe 111, the function of blocking steam from entering the first steam pipe 111 from the first steam outlet 202 can be achieved.

[0084] In practical applications, the first steam outlet 202 of the steam box 2 can be set as a pipe structure, so that the first steam outlet 202 of the steam box 2 and the first steam pipe 111 are connected in an inserting manner. The partition member 3 is set as a sealing plug. In this way, the first steam outlet 202 and the first steam pipe 111 can be hermetically connected by pressing the sealing plug, simplifying the connection structure between the steam box 2 and the first steam pipe 111.

[0085] Furthermore, as Figure 3 , the extending direction of the first steam pipe 111 and the extending direction of the water outlet nozzle 13 are arranged at an angle.

[0086] It can be understood that after the steam flows out from the first steam outlet 202 of the steam cartridge 2, it sequentially passes through the first steam pipe 111 and the water outlet nozzle 13 and then is discharged. In this embodiment, by setting the extending direction of the first steam pipe 111 at an angle with the extending direction of the water outlet nozzle 13, the discharge path of the steam is tortuously extended. With such a setting, the discharge path of the steam can be extended, the condensation amount can be increased, the discharge temperature of the steam can be reduced, and the steam discharge amount can be reduced simultaneously.

[0087] Optionally, for the convenience of pouring out water, the water outlet nozzle 13 can be inclined. The first steam pipe 111 can be set to extend in the up-down direction, so that the inlet end of the first steam pipe 111 faces upward, which is more convenient for docking and connecting with the first steam outlet 202 of the steam cartridge 2 and improves the assembly efficiency.

[0088] In an embodiment of the present application, as Figure 3 , the steam inlet 201 is provided at the bottom of the steam cartridge 2, and the height positions of the first steam outlet 202 and the second steam outlet 203 are higher than the height position of the steam inlet 201.

[0089] With such a setting, the condensed water generated by the condensation of the steam in the steam cartridge 2 can drip from the steam inlet 201 at a lower height position into the kettle body 7, preventing the condensed water from accumulating in the steam cartridge 2. At the same time, it can also prevent the condensed water from flowing out from the first steam outlet 202 or even spraying out from the water outlet nozzle 13, and prevent the condensed water from flowing to the steam detection switch module 73 from the second steam outlet 203.

[0090] In an embodiment of the present application, as Figure 3 and Figure 7 , the first steam outlet 202 is arranged close to the water outlet nozzle 13, and the steam inlet 201 is arranged far from the water outlet nozzle 13; the second steam outlet 203 is located on the side of the steam inlet 201 far from the first steam outlet 202.

[0091] In this embodiment, by arranging the steam inlet 201 and the first steam outlet 202 at both ends of the steam cartridge 2, the steam path can be further extended, the condensation area of the steam can be increased, the condensation amount of the steam can be improved, and the steam discharge can be reduced. By arranging the second steam outlet 203 far from the first steam outlet 202, the steam discharge amount towards the first steam outlet 202 can be further reduced. Optionally, the second steam outlet 203 is arranged closer to the steam inlet 201 relative to the first steam outlet 202.

[0092] In an embodiment of the present application, as Figures 3 to 7, the steam box 2 includes a cavity-expanding section 21, a straight section 22, and a bending section 23 that are connected in sequence. The steam inlet 201 is provided at the bottom of the cavity-expanding section 21, and the first steam outlet 202 is provided at the end of the bending section 23. Among them, the gas flow cross-sectional area of the straight section 22 is smaller than that of the cavity-expanding section 21; the gas flow cross-sectional area of the bending section 23 is larger than that of the straight section 22.

[0093] This embodiment illustrates the structure of the steam box 2. Along the gas path of steam discharge, the cavity-expanding section 21, the straight section 22, and the bending section 23 are connected in sequence. The steam inlet 201 is provided at the bottom of the cavity-expanding section 21, and the steam flows through the cavity-expanding section 21, the straight section 22, and the bending section 23 in sequence and then flows out from the first steam outlet 202. By making the gas flow cross-sectional area of the straight section 22 smaller than that of the cavity-expanding section 21 and the gas flow cross-sectional area of the bending section 23 larger than that of the straight section 22, when the steam is discharged, the steam from the cooking cavity will first pass through the steam inlet 201 with a smaller flow area and then enter the cavity-expanding section 21 with a larger flow area. The steam inlet 201 can play a certain throttling role and can play a certain role in cooling and reducing the pressure of the high-temperature steam. Then, when the steam flows from the cavity-expanding section 21 through the straight section 22 and into the bending section 23, the straight section 22 can also play a certain throttling role on the steam, making the flow cross-sectional area of the steam change from large to small and then to large. In this way, the temperature and pressure of the steam can be further reduced, and the gas emission amount from the air leakage holes 301 of the partition member 3 can be reduced, achieving a better effect of less steam emission.

[0094] In addition, the steam box 2 of this embodiment is connected by pipe sections with different gas flow cross-sectional areas. Compared with pipe sections with the same gas flow cross-sectional area, in addition to being able to cool and reduce the pressure of the steam, it can also extend the flow path of the steam in the steam box 2, increase the internal space of the steam box 2, increase the condensation area of the steam, and further improve the condensation amount.

[0095] It should be noted that, in this embodiment, the steam box 2 includes an expansion section 21, a straight section 22 and a bent section 23 connected in sequence, which represent the functional structure of each pipe section, and the specific shape of each pipe section can be determined according to the actual internal structure layout of the cover body 1, and is not limited to a specific shape. As an example, the expansion section 21 is located on the side of the cover body 1 away from the water outlet 13. The expansion section 21 can be regular such as a cylindrical structure, a square structure or a ring structure, or the expansion section 21 can also be an irregular special-shaped structure, etc. The straight section 22 connects the end of the expansion section 21 close to the water outlet 13 and extends in the direction of the water outlet 13. The straight section 22 can be a straight rectangular tube structure. The bending section 23 is connected to one end of the straight section 22 close to the water outlet 13. The bending section 23 can be a right-angle bend, an acute-angle bend, an obtuse-angle bend, or a 180-degree bend, etc. In this embodiment, considering that the end of the bending section 23 needs to be connected with the first steam pipe 111, the bending section 23 is set to be a 180-degree bend, so that the bending section 23 roughly forms a "∩"-shaped tube, one end of which is connected to the straight section 22, and the other end is connected to the first steam pipe 111, so that the bending section 23 is easier to be inserted into the first steam pipe 111. In this way, the baffle 3 seals and connects the bending section 23 and the first steam pipe 111.

[0096] Furthermore, if Figure 7 The steam box 2 further includes an expansion section 24 connected to the straight section 22 . The expansion section 24 is located at one end of the straight section 22 away from the expansion section 21 . The expansion section 24 is spaced apart from the bending section 23 .

[0097] By providing the expansion section 24 connected to the straight section 22, the internal space of the steam box 2 can be further expanded to increase the steam condensation amount. It can be understood that the expansion section 24 and the bending section 23 are arranged at intervals, so that the expansion section 24 and the bending section 23 can play a role in avoiding other components in the pot cover, such as the water outlet valve assembly, and improve the compactness of the structure.

[0098] Optionally, the steam box 2 is an integrated structure and can be integrally formed by a mold or 3D printing.

[0099] In one embodiment of the present application, Figure 3 and Figure 7 The second steam outlet 203 is arranged on the side of the expansion section 21 away from the bending section 23. By arranging the second steam outlet 203 in the expansion section 21, the second steam outlet 203 is closer to the steam inlet 201, so that the steam amount and steam temperature entering the steam detection switch module 73 can be guaranteed, the detection accuracy is improved, and the situation that the insufficient steam amount leads to inaccurate detection is prevented.

[0100] Exemplarily, the pipe diameter of the second steam outlet 203 can also be set to be larger than the inner diameter of the first steam outlet 202, so that the amount of steam entering the steam detection switch module 73 can be further increased.

[0101] In an embodiment of the present application, as Figure 3 , Figure 5 , Figure 6 and Figure 11 , a gas passing hole 103 for connecting the steam detection switch module 73 and the second steam outlet 203 is provided on the side of the cover body 1 away from the water outlet 13.

[0102] In this embodiment, by providing the gas passing hole 103 on the cover body 1, the second steam outlet 203 of the steam box 2 is connected to the steam detection switch module 73 through the gas passing hole 103, so that steam can enter the steam detection switch module 73 from the inner cavity of the steam box 2. When the steam detection switch module 73 detects that the temperature of the steam reaches the target temperature (for example, when the water is boiled), the power is cut off to stop the liquid heater from heating.

[0103] In actual application, as Figures 3 to 5 , after the steam enters the steam box 2 from the steam inlet 201, it is divided into two paths. One path enters the steam detection switch module 73 through the second steam outlet 203 for detection, and the other path flows through the cavity expansion section 21, the straight section 22 and the bending section 23 in sequence and then reaches the baffle 3 where most of it is blocked. A small part of the steam in this path can be discharged through the air leakage hole 301, the first steam pipe 111 and the transition cavity 101 via the water outlet 13.

[0104] Optionally, as Figure 9 , the steam detection switch module 73 includes a steam connection pipe 731, a switch induction part 732, a second sealing ring 733 and a third sealing ring 734. The steam connection pipe 731 is connected to the connecting pipe 203 through the second sealing ring 733, and the switch induction part 732 is hermetically arranged in the steam connection pipe 731 through the third sealing ring 734 to detect the steam temperature.

[0105] In an embodiment of the present application, as Figure 3 , Figure 5 , Figure 6 and Figure 11 , a steam valve cover 61 is connected to the steam inlet 201, and a movable sealing steel ball 62 is arranged in the steam valve cover 61. The diameter of the sealing steel ball 62 is larger than the diameter of the steam inlet 201.

[0106] In this embodiment, an opening is provided on the steam valve cover 61, and there is a gap between the sealing steel ball 62 and the steam valve cover 61. Thus, during the heating stage, the steam in the cooking cavity can smoothly flow into the steam inlet 201 through the gap between the steam valve cover 61 and the sealing steel ball 62, and then smoothly enter the steam box 2. At the same time, the condensed water in the steam box 2 can flow downward from the steam inlet 201, and then flow into the kettle body through the gap between the sealing steel ball 62 and the steam valve cover 61.

[0107] When pouring water is needed, the kettle lid assembly is in a tilted state. At this time, it drives the sealing steel ball 62 to move within the steam valve cover 61 to block the steam inlet 201, which can prevent the liquid in the kettle body from flowing into the steam box 2 or even flowing out of the steam box 2.

[0108] In one embodiment, as Figure 3 、 Figure 5 、 Figure 6 and Figure 11 , the lid body 1 is further provided with a second steam pipe 112 that connects the steam inlet 201 and the cooking cavity. The second steam pipe 112 and the steam box 2 are hermetically connected through a first sealing ring 5. The steam valve cover 61 is connected to the second steam pipe 112.

[0109] In this embodiment, by providing the second steam pipe 112 on the lid body 1, the second steam pipe 112 extends from the steam inlet 201 towards the cooking cavity, which is convenient for the assembly with the steam valve cover 61.

[0110] In actual application, the steam box 2 can be assembled with the second steam pipe 112 through the steam inlet 201, the first steam outlet 202 is assembled with the first steam pipe 111, and the second steam outlet 203 is assembled with the air vent hole 103 to realize the assembly connection between the steam box 2 and the lid body 1.

[0111] In an embodiment of the present application, as Figure 2 、 Figure 3 、 Figure 6 and Figure 11 , the lid body 1 includes a lower lid 11 and an upper lid 12. The lower lid 11 is used to be installed on the kettle body 7; the steam box 2 and the water outlet nozzle 13 are both provided on the lower lid 11; the upper lid 12 is provided above the steam box 2 and is assembled with the lower lid 11.

[0112] This embodiment illustrates the structure of the lid body 1. The lid body 1 includes a lower lid 11 and an upper lid 12. The upper lid 12 and the lower lid 11 can be assembled and fixed by means such as buckles and screws. Preferably, the upper lid 12 and the lower lid 11 are detachably installed to facilitate the maintenance and replacement of components such as the steam box 2 and the partition member 3.

[0113] The water outlet nozzle 13 is provided on one side of the lower cover 11. The first steam pipe 111 and the second steam pipe 112 are provided on the lower cover 11. The steam box 2 is assembled with the second steam pipe 112 through the steam inlet 201, and the first steam outlet 202 is assembled with the first steam pipe 111 to achieve the installation with the lower cover 11. After the steam box 2 and the lower cover 11 are assembled, the upper cover 12 is then covered above the steam box 2.

[0114] Optionally, a fourth sealing ring 8 can be provided on the peripheral edge of the bottom of the lower cover 11, so that when the cover body 1 is installed on the kettle body 7, it can be hermetically connected to the kettle body 7.

[0115] The present invention also proposes a liquid heater, such as Figure 1 , Figure 9 and Figure 10 . The liquid heater includes a kettle body 7 and a kettle cover assembly. The specific structure of the kettle cover assembly refers to the above-mentioned embodiments. Since this liquid heater adopts all the technical solutions of the above-mentioned all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one. Among them, the kettle body 7 is provided with a cooking cavity, and the kettle cover assembly is movably installed on the kettle body 7 to open or cover the cooking cavity.

[0116] In one embodiment, the kettle body 7 includes a kettle body 71 and a handle 72. A steam detection switch module 73 is provided inside the handle 72, and the steam detection switch module 73 is communicated with the second steam outlet 203 of the steam box 2.

[0117] By arranging the steam detection switch module 73 on the handle 72, the path length of the steam reaching the steam detection switch module 73 can be shortened, and the accuracy of steam detection can be further improved.

[0118] As an example, such as Figures 9 to 11 the steam detection switch module 73 includes a steam connection pipe 731, a switch induction part 732, a second sealing ring 733 and a third sealing ring 734. The steam connection pipe 731 is connected to the second steam outlet 203 through the second sealing ring 733, and the switch induction part 732 is hermetically arranged in the steam connection pipe 731 through the third sealing ring 734 for detecting the steam temperature.

[0119] Specifically, such as Figure 3 , the switch induction part 732 includes a bimetal 7321, a connecting rod 7322 and a switch 7323. The connecting rod 7322 connects the bimetal 7321 and the switch 7323. The bimetal 7321 is used to drive the connecting rod 7322 to drive the switch 7323 to reset to cut off the circuit when it is deformed by heat.

[0120] In practical applications, when heating is required, press the switch 7323 to turn on the heating circuit; when the water in the kettle body 7 boils, the steam in the cooking cavity enters the steam connection pipe 731 through the second steam outlet 203 and contacts the bimetal 7321. After being heated, the bimetal 7321 deforms and drives the connecting rod 7322 to move, and then drives the switch 7323 to reset and move, so as to disconnect the circuit and stop heating. When heating next time, the switch 7323 can be pressed again to turn on the heating circuit.

[0121] Optionally, the switch 7323 can be located on the outer surface of the handle 72.

[0122] Furthermore, the liquid heater further includes a base 9, and the kettle body 7 is detachably arranged on the base 9.

[0123] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A kettle lid assembly, characterized in that, Comprising: A lid body provided with a water outlet nozzle; and A steam box provided on the lid body, the steam box being provided with a steam inlet, a first steam outlet, and a second steam outlet. The steam inlet is used to communicate with a cooking cavity, the first steam outlet is communicated with the water outlet nozzle, and the second steam outlet is used to communicate with a steam detection switch module; Wherein, a part of the steam entering from the steam inlet flows through the second steam outlet to the steam detection switch module, and another part is discharged through the first steam outlet and the water outlet nozzle.

2. The lid assembly according to claim 1, characterized in that, The kettle lid assembly further includes a partition member provided on the steam box and / or the lid body. The partition member is used to block the gas path from the steam inlet to the water outlet nozzle, and is used to conduct the gas path from the steam inlet to the water outlet nozzle when the steam pressure in the steam box reaches a preset value.

3. The lid assembly according to claim 2, wherein The partition member is hermetically provided on the steam box and / or the lid body to block the gas path between the steam inlet and the water outlet nozzle; the partition member is provided with a pressure relief hole.

4. The lid assembly according to claim 3, wherein, The partition member is provided at the first steam outlet to hermetically connect the steam box and the lid body.

5. The lid assembly according to claim 4, characterized in that, The partition member is a sealing plug.

6. The lid assembly according to claim 3, wherein The pressure relief hole is a round hole, a slotted hole or a cross hole.

7. The lid assembly according to any one of claims 1 to 6, characterized in that, The water outlet nozzle is provided on one side of the lid body. The lid body is provided with a transition cavity communicating the water outlet nozzle and the first steam outlet, and a water passing hole is provided at the bottom of the transition cavity; The kettle lid assembly further includes a water outlet valve assembly provided on the lid body. The water outlet valve assembly is used to block or open the water passing hole.

8. The lid assembly according to claim 7, characterized in that, The water outlet valve assembly includes: A water outlet valve body movably provided at the water passing hole; A button provided on the lid body; and A transmission mechanism drivingly connecting the button and the water outlet valve body, and used to drive the water outlet valve body to move up and down to open or block the water passing hole when the button is pressed; Wherein, the pressing direction of the button is not coaxial with the moving direction of the water outlet valve body.

9. The lid assembly according to any one of claims 1 to 6, characterized in that The steam inlet is provided at the bottom of the steam box, and the height positions of the first steam outlet and the second steam outlet are higher than the height position of the steam inlet.

10. The lid assembly according to claim 9, characterized in that, The first steam outlet is arranged close to the water outlet nozzle, and the steam inlet is arranged far from the water outlet nozzle; the second steam outlet is located on the side of the steam inlet far from the first steam outlet.

11. The lid assembly according to claim 10, wherein The steam box includes a cavity expansion section, a straight section and a bending section connected in sequence. The steam inlet is provided at the bottom of the cavity expansion section, the first steam outlet is provided at the end of the bending section, and the second steam outlet is provided on the side of the cavity expansion section away from the bending section; Wherein, the gas flow cross-sectional area of the straight section is smaller than the gas flow cross-sectional area of the cavity expansion section.

12. The kettle lid assembly according to any one of claims 1 to 6, characterized in that, An air passing hole for communicating the steam detection switch module and the second steam outlet is provided on the side of the lid body away from the water outlet nozzle.

13. The kettle lid assembly according to any one of claims 1 to 6, characterized in that A steam valve cover is connected to the steam inlet, and a movable sealing steel ball is provided in the steam valve cover. The diameter of the sealing steel ball is larger than the diameter of the steam inlet.

14. The kettle lid assembly according to any one of claims 1 to 6, characterized in that, The lid body includes: A lower lid for being mounted on the kettle body; the steam box and the water outlet nozzle are both provided on the lower lid; and The upper cover is provided above the steam box and is assembled with the lower cover.

15. A liquid heater, characterized in that, It includes a kettle body and a kettle lid assembly as described in any one of claims 1 to 14. The kettle body is provided with a cooking cavity, and the kettle lid assembly is movably installed on the kettle body to open or close the cooking cavity.

16. The liquid heater according to claim 15, characterized in that, The kettle body includes a kettle body and a handle. A steam detection switch module is provided inside the handle, and the steam detection switch module is communicated with the second steam outlet of the steam box.

17. The liquid heater according to claim 16, wherein, The steam detection switch module includes: A steam connection pipe, which is hermetically connected to the second steam outlet; and A switch induction part, which is arranged inside the steam connection pipe; the switch induction part includes a bimetallic strip, a connecting rod and a switch. The connecting rod connects the bimetallic strip and the switch, and the bimetallic strip is used to drive the connecting rod to drive the switch to reset to cut off the circuit when it is deformed by heat.

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