Pot lid assembly and liquid heating device

Abstract

To disclose a pot lid assembly for reducing steam discharge of a liquid heating device, and the liquid heating device.SOLUTION: In a pot lid assembly and a liquid heating device, the pot lid assembly includes a lid body and a steam box 2. The lid body is provided with a hot water discharge port. The steam box is provided in the lid body. The steam box is provided with: a steam inlet 201 communicating with a boiling chamber; a first steam outlet communicating with the hot water discharge port; and a second steam outlet used for communicating with a steam detection switch module.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] This application relates to the technical field of household appliances, and particularly to a pot lid assembly and a liquid heating device.

Background Art

[0002] Liquid heating devices are widely used in households. For example, an electric pot is used to boil and store hot water.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In the related art, during the process of boiling water in an electric pot, a large amount of high-temperature steam blows out from the water outlet, which is likely to accidentally scald the user.

[0004] The main object of this application is to propose a pot lid assembly for reducing steam discharge of a liquid heating device.

Means for Solving the Problems

[0005] To achieve the above object, the pot lid assembly proposed by this application includes a lid body provided with a water outlet, a steam box provided on the lid body, the steam box being provided with a steam inlet used to communicate with a boiling chamber, a first steam outlet communicating with the water outlet, and a second steam outlet used to communicate with a steam detection switch module, The steam entering from the steam inlet partly 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.

[0006] In one embodiment of the present application, the pot lid assembly further includes a spacer provided on the steam box and / or the lid body. The spacer is used to block the gas path from the steam inlet to the water outlet, and is also used to conduct the gas path from the steam inlet to the water outlet when the steam pressure in the steam box reaches a predetermined value.

[0007] In one embodiment of the present application, the spacer is hermetically installed on the steam box and / or the lid body so as to block the gas path from the steam inlet to the water outlet. The spacer is provided with a pressure relief hole.

[0008] In one embodiment of the present application, the spacer is provided at the first steam outlet so as to hermetically connect the steam box and the lid body.

[0009] In one embodiment of the present application, the spacer is a seal plug.

[0010] In one embodiment of the present application, the pressure relief hole is a circular hole, a slotted hole, or a cross-shaped hole.

[0011] In one embodiment of the present application, the water outlet is provided on one side of the lid body. The lid body is provided with a transition chamber that communicates the water outlet and the first steam outlet. A water passage opening is provided at the bottom of the transition chamber. The pot lid assembly further includes a water outlet valve assembly provided on the lid body. The water outlet valve assembly is used to open and close the water passage opening.

[0012] In one embodiment of the present application, the water outlet valve assembly includes a water outlet valve body movably provided at the water passage opening, a button provided on the upper surface of the lid body, and a transmission mechanism that transmission-connects the button and the water outlet valve body and is used to drive the water outlet valve body to move up and down to open and close the water passage opening when the button is pressed. The pressing direction of the button and the moving direction of the hot water outlet valve body are not coaxial.

[0013] In one embodiment of the present application, the steam inlet is provided at the bottom of the steam box, and the height positions where the first steam outlet and the second steam outlet are located are higher than the height position where the steam inlet is located.

[0014] In one embodiment of the present application, the first steam outlet is provided close to the hot water outlet, the steam inlet is provided away from the hot water outlet, and the second steam outlet is located on the side of the steam inlet away from the first steam outlet.

[0015] In one embodiment of the present application, the steam box includes a wide portion, a flat portion, and a bent portion that are connected in sequence. The steam inlet is provided at the bottom of the wide portion, the first steam outlet is provided at the end of the bent portion, and the second steam outlet is provided on the side of the wide portion away from the bent portion. The gas flow cross-sectional area of the flat portion is smaller than the gas flow cross-sectional area of the wide portion.

[0016] In one embodiment of the present application, a ventilation hole used to communicate the steam detection switch module and the second steam outlet is provided on the side of the lid body away from the hot water outlet.

[0017] In one embodiment of the present application, a steam valve cap is connected to the steam inlet, a sealing iron ball that can move is arranged in the steam valve cap, and the diameter of the sealing iron ball is larger than the diameter of the steam inlet.

[0018] In one embodiment of the present application, the lid body is used to be attached to the pot body, and includes a lower lid provided with the steam box and the hot water outlet, and an upper lid provided above the steam box and assembled to the lower lid.

[0019] To achieve the above object, the present application further provides a liquid heating device including a pot body and the pot lid assembly. A boiling chamber is provided in the pot body, and the pot lid assembly is movably installed on the pot body so as to open and close the boiling chamber.

[0020] In one embodiment of the present application, the pot body includes a pot body and a handle, and a steam detection switch module is provided in the handle. The steam detection switch module communicates with the second steam outlet of the steam box.

[0021] In one embodiment of the present application, the steam detection switch module includes a steam nozzle hermetically connected to the second steam outlet, and a switching sensing part provided in the steam nozzle. The switching sensing part includes a bimetal sheet, a link rod, and a switch. The link rod connects the bimetal sheet and the switch, and the bimetal sheet is used to drive the link rod to return the switch and cut off the electric circuit when being deformed by heat.

Advantages of the Invention

[0022] In the pot lid assembly according to the technical solution of the present application, a steam box is provided on the lid body. The steam inlet of the steam box communicates with the boiling chamber of the pot body, the first steam outlet of the steam box communicates with the water outlet, and the second steam outlet is used to communicate with the steam detection switch module. Thereby, the steam entering from the steam inlet is divided into two routes. One route flows from the second steam outlet to the steam detection switch module for steam detection, and the other route is discharged from the first steam outlet and the water outlet. Thereby, it is possible to discharge the steam generated in the boiling chamber after diverting a part of it, so that by reducing the amount of steam discharged from the water outlet, the purpose of reducing steam discharge can be achieved, and scalding of the user can be prevented.

[0023] To more clearly illustrate the embodiments of the present application and the technical solutions of the prior art, the drawings required for the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only a part of the embodiments of the present application, and those skilled in the art can obtain other drawings based on the structures shown in these drawings without creative labor.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Modes for Carrying Out the Invention

[0025] In combination with the embodiments, the realization of the object, the functional features, and the advantages of the present application will be further described with reference to the drawings.

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present application in combination with the drawings in the embodiments of the present application. It is obvious that the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0027] In addition, if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship, movement status, etc. between each component in a specific posture (refer to the drawings). When the specific posture changes, the directional indications will also change accordingly.

[0028] Also, "and / or" or "and / or" appearing throughout the text means including three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where both A and B are satisfied simultaneously.

[0029] In addition, when it comes to the descriptions such as "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for explanation and should not be understood as presenting or implying their relative importance or implicitly designating the number of technical features presented. Therefore, the features limited to "No. 1", "No. 2" may explicitly or implicitly include at least one of the features. Also, as long as it can be realized by those skilled in the art, the technical solutions of each embodiment can be combined with each other. If there is a contradiction or it cannot be realized in the combination of technical solutions, it should be understood that such a combination of technical solutions does not exist and is not within the scope that the present application seeks protection.

[0030] This application provides a pot lid assembly for use in a liquid heating device, which may be an electric boiling pot, a multi-functional pot, or the like. The liquid heating device includes a pot body 7 and a steam detection switch module 73. A boiling chamber is provided in the pot body 7, and the pot lid assembly is movably covered on the pot body 7 so as to be able to open and close the boiling chamber. Hereinafter, the structure of the pot lid assembly will be described.

[0031] In an embodiment of the present application, as shown in FIGS. 2 to 5, the pot lid assembly includes a lid body 1 and a steam box 2.

[0032] A water outlet 13 is provided in the lid body 1. The steam box 2 is provided on the lid body 1, and the steam box 2 is provided with a steam inlet 201 communicating with the boiling chamber, a first steam outlet 202 communicating with the water outlet 13, and a second steam outlet 203 communicating with the steam detection switch module 73. 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.

[0033] Note that the lid body 1 is movably connected to the pot body 7. For example, the lid body 1 may be slidably connected or rotatably connected to the pot body 7. When heating by the liquid heating device, the lid body 1 closes the boiling chamber, the water in the boiling chamber boils to generate steam, and the steam enters the internal space of the steam box 2 through the steam inlet 201 and then is divided into two routes. One route flows to the steam detection switch module 73 through the second steam outlet 203. When the steam detection switch module 73 detects that the temperature of the steam has reached the target temperature (for example, when the water boils), it cuts off the power supply to stop the heating by the liquid heating device. The other route is discharged through the first steam outlet 202 and the water outlet 13. Thereby, since part of the steam generated in the boiling chamber can be diverted and then discharged, by reducing the amount of steam discharged from the water outlet 13, the purpose of reducing steam discharge can be achieved, and the user can be prevented from being scalded.

[0034] When actually used, the steam detection switch module 73 may be provided on the handle of the pot body 7 or on the bottom of the pot body 7. When the steam detection switch module 73 is provided on the handle, after the steam enters the steam box 2, some of the steam may be guided into the handle through the second steam outlet 203. When the steam detection switch module 73 is provided on the bottom of the pot body 7, after the steam enters the steam box 2, some of the steam may be guided to the bottom of the pot body 7 through the second steam outlet 203.

[0035] In one embodiment of the present application, the pot lid assembly further includes a spacer 3 provided on the steam box 2 and / or the lid body 1. The spacer 3 is used to block the gas path from the steam inlet 201 to the water outlet 13, and is also 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 predetermined value.

[0036] In this embodiment, a spacer 3 is provided on the steam box 2 and / or the lid body 1. The spacer 3 functions to stop the discharge of steam by blocking the gas path from the steam inlet 201 to the water outlet 13 at the initial stage of steam generation, retain most of the steam in the steam box 2, and contact and condense with the inner wall surface of the relatively low-temperature steam box 2, thereby achieving the purpose of reducing the discharge of steam. When the generation of steam is sufficiently large and the steam pressure in the steam box 2 rises to a predetermined value, the spacer 3 can smoothly discharge the steam and relieve the pressure by conducting the gas path from the steam inlet 201 to the water outlet 13, and avoid the safety risk caused by the too high pressure in the pot body 7.

[0037] In actual application, the predetermined value when the steam pressure rises to the predetermined value is not limited to a specific specific numerical value, and may be determined according to the specific structure of the spacer 3, the capacity of the boiling chamber, or the size of the internal space of the steam box 2, etc.

[0038] Optionally, the spacer 3 may be an elastic sheet structure, a one-way valve structure, a seal structure having small holes, or the like.

[0039] As an example, the spacer 3 is hermetically installed on the steam box 2 and / or the lid body 1 so as to block the gas path from the steam inlet 201 to the hot water outlet 13, and the spacer 3 is provided with a pressure relief hole 301.

[0040] In this embodiment, by hermetically installing the spacer 3 having the pressure relief hole 301 on the steam box 2 and / or the lid body 1, the spacer 3 can block the gas path from the steam inlet 201 to the hot water outlet 13. Therefore, it is possible to block the discharge of most of the steam so that more steam stays and condenses in the steam box 2. Thereby, the purpose of reducing steam discharge can be achieved, and scalding of the user can be prevented.

[0041] Note that the spacer 3 being hermetically installed on the steam box 2 and / or the lid body 1 means that the spacer 3 may be hermetically installed inside the steam box 2, or may be hermetically installed inside the lid body 1, or may be hermetically connected to both the steam box 2 and the lid body 1. When the spacer 3 is hermetically installed inside the steam box 2, since the spacer 3 is located between the steam inlet 201 and the first steam outlet 202, it is possible to block the steam from flowing to and flowing out of the first steam outlet 202. When the spacer 3 is hermetically installed on the lid body 1, since the spacer 3 is located between the first steam outlet 202 and the outlet end of the hot water outlet 13, it is possible to block the steam from being discharged from the hot water outlet 13. When the spacer 3 is hermetically connected to the steam box 2 and the lid body 1, since the spacer 3 is located between the first steam outlet 202 and the inlet end of the hot water outlet 13, it is possible to block the steam flow from the steam box 2 to the hot water outlet 13 and reduce steam discharge. In actual application, the specific position of the spacer 3 is not limited in this specification, as long as it can function to block the gas path of steam discharge.

[0042] The sealing method between the spacer 3 and the steam box 2 and / or the lid body 1 may be determined according to the actual situation. For example, it may be sealed using a sealing ring, or may be sealed by means of an interference fit between the spacer 3 and the steam box 2 and / or the lid body 1. The specific structure of the spacer 3 may be determined according to the actual situation. For example, the spacer 3 may be a partition plate structure, a sealing plug structure, or a blocking block structure, etc.

[0043] After the spacer 3 blocks the gas path of steam discharge, the pressure relief hole 301 on the spacer 3 functions to prevent excessive pressure in the pot body 7. This pressure relief hole 301 may be a small hole, a micro hole, etc. In actual applications, the cross-sectional shape of the hole of the pressure relief hole 301 may be determined according to the actual situation. For example, the pressure relief hole 301 may be a circular hole, a linear hole, or a cross-shaped hole, etc.

[0044] Furthermore, as shown in FIGS. 3, 4, 6, and 8, the spacer 3 is provided at the first steam outlet 202 so as to hermetically connect the steam box 2 and the lid body 1.

[0045] In this embodiment, by arranging the spacer 3 at the first steam outlet 202, it does not occupy the space inside the steam box 2. Therefore, most of the steam can be retained in the internal space of the steam box 2, increasing the contact area between the steam and the inner wall surface of the steam box 2, further increasing the condensation area of the steam, increasing the condensation amount of the steam, and further reducing the discharge amount of the steam. At the same time, more steam can be made to flow from the second steam outlet 203 to the position of the steam detection switch module 73, ensuring the amount and temperature of the steam entering the position of the steam detection switch module 73, improving the detection accuracy, and preventing inaccurate detection due to insufficient steam volume.

[0046] Since the gas path between the steam box 2 and the lid body 1 is connected via the first steam outlet 202, by arranging the spacer 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 regions of the pot lid assembly.

[0047] As an example, as shown in FIG. 8, the spacer 3 is a seal plug, and the seal plug is provided with a small hole for pressure relief. Optionally, the seal plug may be a rubber plug, a silicone rubber plug, or the like.

[0048] In one embodiment of the present application, as shown in FIGS. 3 and 4, the hot water outlet 13 is provided on one side of the lid body 1, and the lid body 1 is provided with a transition chamber 101 that communicates the hot water outlet 13 and the first steam outlet 202. A water passage port 102 is provided at the bottom of the transition chamber 101. The pot lid assembly further includes a hot water valve assembly provided on the lid body 1, and the hot water valve assembly is used to open and close the water passage port 102.

[0049] When the user needs to pour out water, it can be discharged through the hot water outlet 13. That is, when discharging hot water, since the hot water outlet 13 needs to communicate with the boiling chamber, a hot water valve assembly is provided on the lid body 1, and the hot water valve assembly can be in a closed state when there is no need to discharge hot water and in an open state when there is a need to discharge hot water. Thereby, during heating by the liquid heating device, steam can only be discharged through the steam box 2, preventing steam from being directly discharged from the boiling chamber through the hot water outlet 13, and ensuring the effect of reducing steam discharge.

[0050] A transition chamber 101 is provided inside the lid body 1. This transition chamber 101 is communicated with the hot water outlet 13, the first steam outlet 202, and the water passage port 102, and a hot water valve assembly is provided at the water passage port 102. Thereby, when heating by the liquid heating device, the hot water valve assembly closes the water passage port 102 so that the transition chamber 101 and the boiling chamber do not communicate with each other, 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 hot water outlet 13. When the heating is completed, or when the user needs to pour water when not heating, by opening the water passage port 102 with the hot water valve assembly, the water in the boiling chamber can be smoothly flowed from the water passage port 102 to the hot water outlet 13 and poured out.

[0051] Note that the steam discharge gas path and the water discharge path of this embodiment share the same transition chamber 101 and hot water outlet 13, and there is no need to provide an independent dedicated structure for the gas path or the water discharge path. Therefore, the design of the structure can be simplified and the layout of the structure can be made more compact. Also, by providing the transition chamber 101 between the hot water outlet 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 discharge of the steam can be reduced.

[0052] As an example, as shown in FIGS. 3 and 4, the first steam outlet 202 may be provided at the upper part of the transition chamber 101, the water passage port 102 may be provided at the bottom of the transition chamber 101, and the hot water outlet 13 is connected to the side part of the transition chamber 101. Thereby, when the user tilts the liquid heating device to pour out water, the water can quickly flow out from the hot water outlet 13 after entering the transition chamber 101 from the water passage port 102, so that the backflow of water into the first steam outlet 202 is prevented. At the same time, when the hot water valve assembly opens the water passage port 102, the condensed water flowing out from the first steam outlet 202 can quickly flow down to the water passage port 102 and can be refluxed into the boiling chamber.

[0053] In one embodiment, the hot water discharge valve assembly includes a hot water discharge valve body 41 provided at the water passage port 102, a button 43 provided on the lid body 1, and a transmission mechanism that transmission-connects the button 43 and the hot water discharge valve body 41. The user can press the button 43 and transmit power to the hot water discharge valve body 41 through the transmission mechanism, thereby driving the hot water discharge valve body 41 to open and close the water passage port 102.

[0054] Specifically, as shown in FIGS. 3, 6, and 11, the transmission mechanism includes a cam set 421 that transmission-connects the button 43 and the transmission plate 422, a transmission plate 422 connected to the hot water discharge valve body 41, and a spring 423 connected to the transmission plate 422 and functioning to return the transmission plate 422. When the button 43 is pressed, it can drive the transmission plate 422 by moving the cam set 421 to press the hot water discharge valve body 41 downward to open the water passage port 102. When the button 43 is pressed again, the cam set 421 separates from the transmission plate 422. At this time, due to the return action of the spring 423, the transmission plate 422 is driven upward, and accordingly, the hot water discharge valve body 41 moves upward to close the water passage port 102.

[0055] Optionally, the button 43 is at least partially exposed on the outer surface of the lid body 1.

[0056] As an example, the pressing direction of the button 43 and the moving direction of the hot water discharge valve body 41 are not coaxial. Thereby, the lid body 1 can be made thinner, and the hot water discharge valve body 41 can be placed closer to the hot water outlet 13, so that when pouring water, the water in the boiling chamber can be poured out more easily, and the effect of reducing the force required when pouring water is achieved. Optionally, the button 43 may be disposed at the central position on the upper surface of the lid body 1.

[0057] In one embodiment, as shown in FIGS. 3 and 4, the lid body 1 is provided with a first steam pipe 111 communicating with the transition chamber 101. The intake end of the first steam pipe 111 and the first steam outlet 202 are hermetically connected via a spacer 3, and a pressure relief hole 301 communicates the internal space of the steam box 2 with the internal space of the first steam pipe 111. By hermetically connecting the spacer 3 to the first steam outlet 202 and the first steam pipe 111, the entry of steam from the first steam outlet 202 into the first steam pipe 111 can be blocked.

[0058] In actual application, the first steam outlet 202 of the steam box 2 is provided as a tubular structure, and the first steam outlet 202 of the steam box 2 and the first steam pipe 111 are connected by a pipe insertion method. The spacer 3 may be provided as a seal plug. By doing so, the first steam outlet 202 and the first steam pipe 111 can be hermetically connected by press-fitting the seal plug, so that the connection structure between the steam box 2 and the first steam pipe 111 is simplified.

[0059] Furthermore, as shown in FIG. 3, the extending direction of the first steam pipe 111 and the extending direction of the hot water outlet 13 are arranged to have an included angle.

[0060] It should be noted that after the steam flows out from the first steam outlet 202 of the steam box 2, it passes through the first steam pipe 111 and the hot water outlet 13 in sequence and then is discharged. In this embodiment, by arranging the extending direction of the first steam pipe 111 and the extending direction of the hot water outlet 13 to have an included angle, the discharge path of the steam is bent. In this way, 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 at the same time the steam discharge amount can be reduced.

[0061] Optionally, the hot water outlet 13 may be provided in an inclined manner so that water can be easily poured out. The first steam pipe 111 is provided to extend in the vertical direction so that the inlet end of the first steam pipe 111 faces upward, which makes it easier to butt and connect with the first steam outlet 202 of the steam box 2 and improves the assembly efficiency.

[0062] In one embodiment of the present application, as shown in FIG. 3, the steam inlet 201 is provided at the bottom of the steam box 2, and the height positions where the first steam outlet 202 and the second steam outlet 203 are located are higher than the height position where the steam inlet 201 is located.

[0063] Thereby, the condensed water formed by the condensation of steam in the steam box 2 can drip into the pot body 7 from the steam inlet 201 with a low height position, and it is possible to prevent the condensed water from accumulating in the steam box 2. At the same time, it is possible to prevent the condensed water from flowing out from the first steam outlet 202 and thus from spraying out from the water outlet 13, and it is also possible to prevent the condensed water from flowing from the second steam outlet 203 to the steam detection switch module 73.

[0064] In one embodiment of the present application, as shown in FIGS. 3 and 7, the first steam outlet 202 is provided close to the water outlet 13, and the steam inlet 201 is provided away from the water outlet 13. The second steam outlet 203 is located on the side of the steam inlet 201 that is away from the first steam outlet 202.

[0065] In this embodiment, by arranging the steam inlet 201 and the first steam outlet 202 separately at both ends of the steam box 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 discharge amount of the steam can be reduced. By arranging the second steam outlet 203 away from the first steam outlet 202, the discharge amount of steam to the first steam outlet 202 can be further reduced. Optionally, the second steam outlet 203 may be provided closer to the steam inlet 201 than the first steam outlet 202.

[0066] In one embodiment of the present application, as shown in FIGS. 3 to 7, the steam box 2 includes a wide portion 21, a flat portion 22, and a bent portion 23 that are connected in sequence. The steam inlet 201 is provided at the bottom of the wide portion 21, and the first steam outlet 202 is provided at the end of the bent portion 23. The gas flow cross-sectional area of the flat portion 22 is smaller than the gas flow cross-sectional area of the wide portion 21, and the gas flow cross-sectional area of the bent portion 23 is larger than the gas flow cross-sectional area of the flat portion 22.

[0067] In this embodiment, an example will be given to describe the structure of the steam box 2. Along the gas path of steam discharge, the wide part 21, the flat part 22 and the bent part 23 are connected in sequence. The steam inlet 201 is provided at the bottom of the wide part 21. The steam flows from the steam inlet 201 through the wide part 21, the flat part 22 and the bent part 23 in sequence, and then flows out from the first steam outlet 202. By making the gas flow cross-sectional area of the flat part 22 smaller than that of the wide part 21 and making the gas flow cross-sectional area of the bent part 23 larger than that of the flat part 22, in the path where the steam is discharged, the steam passes through the steam inlet 201 with a relatively small flow area from the boiling chamber and then enters the wide part 21 with a relatively large flow area. The steam inlet 201 can function to throttle the flow rate to a certain extent and can achieve a certain temperature reduction and pressure reduction effect on the high-temperature steam. Then, when the steam flows from the wide part 21 through the flat part 22 into the bent part 23, the flat part 22 also functions to throttle the steam flow rate to a certain extent, and the flow cross-sectional area of the steam can be reduced and then increased. In this way, the temperature and air pressure of the steam can be further reduced, the gas discharge amount from the pressure relief hole 301 of the spacer 3 can be reduced, and a better steam discharge amount reduction effect can be obtained.

[0068] In addition, the steam box 2 of this embodiment can reduce the temperature and pressure of the steam compared with the pipe part with the same gas flow cross-sectional area by connecting the pipe parts with different gas flow cross-sectional areas. In addition, the flow path of the steam in the steam box 2 can be extended, the internal space of the steam box 2 can be increased, the condensation area of the steam can be enlarged, and the condensation amount can be further increased.

[0069] Note that the steam box 2 in this embodiment includes a wide portion 21, a flat portion 22, and a bent portion 23 that are connected in sequence. However, it only represents the functional configuration of each pipe portion. The specific shape of each pipe portion may be determined according to the internal structure layout of the actual lid body 1 and is not limited to a specific specific shape. As an example, the wide portion 21 is located on the side of the lid body 1 away from the hot water outlet 13. The wide portion 21 may have a regular structure such as a cylindrical structure, a rectangular parallelepiped structure, an annular structure, etc., or an irregular special-shaped structure, etc. The flat portion 22 is connected to one end of the wide portion 21 on the side close to the hot water outlet 13 and extends in the direction towards the hot water outlet 13. The flat portion 22 may be a flat and straight rectangular pipe structure. The bent portion 23 is connected to one end of the flat portion 22 on the side close to the hot water outlet 13. The bent portion 23 may be a right-angle bend, an acute-angle bend, an obtuse-angle bend, or a 180-degree bend, etc. In this embodiment, considering that it is necessary to connect the end of the bent portion 23 to the first steam pipe 111, the bent portion 23 is made into a 180-degree bend so that the bent portion 23 forms a substantially "∩"-shaped pipe, with one end connected to the flat portion 22 and the other end connected to the first steam pipe 111, making it easier to insert the bent portion 23 by the first steam pipe 111. In this way, the spacer 3 hermetically connects the bent portion 23 and the first steam pipe 111.

[0070] Furthermore, as shown in FIG. 7, the steam box 2 further includes an extension portion 24 connected to the flat portion 22. The extension portion 24 is located at one end of the flat portion 22 away from the wide portion 21, and the extension portion 24 and the bent portion 23 are arranged at intervals.

[0071] By providing the extension portion 24 connected to the flat portion 22, the internal space of the steam box 2 can be further enlarged, and the condensation amount of the steam can be increased. Since the extension portion 24 and the bent portion 23 are arranged at intervals, the space between the extension portion 24 and the bent portion 23 functions to allow other components in the pot lid, such as the hot water valve assembly, to pass through, and the structure can be made more compact.

[0072] Preferably, the steam box 2 has an integral structure and may be integrally formed by molding or 3D printing.

[0073] In one embodiment of the present application, as shown in FIGS. 3 and 7, the second steam outlet 203 is provided on the side of the wide portion 21 away from the bent portion 23. By arranging the second steam outlet 203 in the wide portion 21, the second steam outlet 203 can be made closer to the steam inlet 201, so as to ensure the amount and temperature of the steam entering up to the position of the steam detection switch module 73, improve the detection accuracy, and prevent inaccurate detection due to insufficient steam volume.

[0074] As an example, the pipe diameter of the second steam outlet 203 may be set larger than the inner diameter of the first steam outlet 202. Thereby, the amount of steam entering up to the steam detection switch module 73 can be further increased.

[0075] In one embodiment of the present application, as shown in FIGS. 3, 5, 6, and 11, on the side of the lid body 1 away from the water outlet 13, there is provided a ventilation hole 103 used to communicate the steam detection switch module 73 with the second steam outlet 203.

[0076] In this embodiment, by providing the ventilation hole 103 in the lid body 1, the second steam outlet 203 of the steam box 2 communicates with the steam detection switch module 73 through the ventilation hole 103. Thereby, the steam can enter from the internal space of the steam box 2 up to the steam detection switch module 73. When the steam detection switch module 73 detects that the temperature of the steam has reached the target temperature (for example, when the water boils), it cuts off the power supply to stop the heating by the liquid heating device.

[0077] In actual applications, as shown in FIGS. 3 to 5, after the steam enters the steam box 2 from the steam inlet 201, it is divided into two routes. One route flows through the second steam outlet 203 to the steam detection switch module 73 and is detected, and the other route passes through the wide portion 21, the flat portion 22, and the bent portion 23 in sequence and flows to the spacer 3, and most of it is blocked. A very small part of the steam in this route can pass through the pressure relief hole 301, the first steam pipe 111, and the transition chamber 101 in sequence and be discharged through the water outlet 13.

[0078] Optionally, as shown in FIG. 9, the steam detection switch module 73 includes a steam nozzle 731, a switching sensing portion 732, a second sealing ring 733, and a third sealing ring 734. The steam nozzle 731 is connected to the second steam outlet 203 through the second sealing ring 733, and the switching sensing portion 732 is hermetically installed in the steam nozzle 731 through the third sealing ring 734 and is used to detect the steam temperature.

[0079] In an embodiment of the present application, as shown in FIGS. 3, 5, 6, and 11, a steam valve cap 61 is connected to the steam inlet 201, and a movable sealing iron ball 62 is arranged in the steam valve cap 61. The diameter of the sealing iron ball 62 is larger than the diameter of the steam inlet 201.

[0080] In this embodiment, an opening is formed in the steam valve cap 61, and there is a gap between the sealing iron ball 62 and the steam valve cap 61. Thus, in the heating stage, the steam in the boiling chamber can flow into the steam inlet 201 from the gap between the steam valve cap 61 and the sealing iron ball 62 and further 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 flow into the pot body 7 from the gap between the sealing iron ball 62 and the steam valve cap 61.

[0081] When it is necessary to pour out water, the pot lid assembly is in a tilted state. At this time, by moving the sealing iron ball 62 in the steam valve cap 61 to block the steam inlet 201, it is possible to prevent the liquid in the pot body 7 from flowing into the steam box 2 and then flowing out of the steam box 2.

[0082] In one embodiment, as shown in FIGS. 3, 5, 6, and 11, the lid body 1 is further provided with a second steam pipe 112 that communicates the steam inlet 201 with the boiling chamber. The second steam pipe 112 and the steam box 2 are hermetically connected via a first sealing ring 5. The steam valve cap 61 is connected to the second steam pipe 112.

[0083] In this embodiment, by providing the second steam pipe 112 extending in the direction from the steam inlet 201 toward the boiling chamber on the lid body 1, it is easy to assemble with the steam valve cap 61.

[0084] In actual application, by assembling the steam box 2 to the second steam pipe 112 via the steam inlet 201, assembling the first steam outlet 202 to the first steam pipe 111, and assembling the second steam outlet 203 to the vent hole 103, the assembly and connection between the steam box 2 and the lid body 1 can be realized.

[0085] In one embodiment of the present application, as shown in FIGS. 2, 3, 6, and 11, the lid body 1 includes a lower lid 11 and an upper lid 12. The lower lid 11 is used to be attached to the pot body 7. Both the steam box 2 and the water outlet 13 are provided on the lower lid 11. The upper lid 12 is provided above the steam box 2 and is assembled to the lower lid 11.

[0086] In this embodiment, an example will be given to explain 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 snaps and screws. Preferably, by detachably attaching the upper lid 12 and the lower lid 11, it is possible to facilitate the maintenance and replacement of components such as the steam box 2 and the spacer 3.

[0087] The water outlet 13 is provided on one side of the lower lid 11. The first steam pipe 111 and the second steam pipe 112 are provided on the lower lid 11. The steam box 2 is assembled to the second steam pipe 112 through the steam inlet 201. The first steam outlet 202 is assembled to the first steam pipe 111, and the attachment to the lower lid 11 is completed. After assembling the steam box 2 and the lower lid 11, the upper lid 12 is placed over the steam box 2.

[0088] Optionally, a fourth sealing ring 8 may be provided at the bottom periphery of the lower lid 11 so that it can be hermetically connected to the pot body 7 when the lid body 1 is attached to the pot body 7.

[0089] The present application further proposes a liquid heating device. As shown in FIGS. 1, 9 and 10, the liquid heating device includes a pot body 7 and a pot lid assembly. For the specific structure of the pot lid assembly, please refer to the above-described embodiments. Since this liquid heating device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, but the description is omitted here. A boiling chamber is provided in the pot body 7, and the pot lid assembly is movably attached to the pot body 7 so as to open and close the boiling chamber.

[0090] In one embodiment, the pot body 7 includes a pot body 71 and a handle 72. A steam detection switch module 73 is provided in the handle 72, and the steam detection switch module 73 communicates with the second steam outlet 203 of the steam box 2.

[0091] By providing the steam detection switch module 73 in the handle 72, the length of the path for the steam to reach the steam detection switch module 73 can be shortened, and the accuracy of steam detection can be further improved.

[0092] As an example, as shown in FIGS. 9 to 11, the steam detection switch module 73 includes a steam nozzle 731, a switching sensing unit 732, a second seal ring 733, and a third seal ring 734. The steam nozzle 731 is connected to the second steam outlet 203 via the second seal ring 733. The switching sensing unit 732 is hermetically installed in the steam nozzle 731 via the third seal ring 734 and is used to detect the steam temperature.

[0093] Specifically, as shown in FIG. 3, the switching sensing unit 732 includes a bimetal sheet 7321, a link rod 7322, and a switch 7323. The link rod 7322 connects the bimetal sheet 7321 and the switch 7323. The bimetal sheet 7321 is used to drive the link rod 7322 to reset the switch 7323 to cut off the electrical circuit when it is deformed by heat.

[0094] In actual application, when heating is required, the heating circuit is conducted by pressing the switch 7323. When the water in the pot body 7 boils, the steam in the boiling chamber enters the steam nozzle 731 from the second steam outlet 203 and contacts the bimetal sheet 7321. The bimetal sheet 7321 is deformed by heat, drives the link rod 7322, and further returns the switch 7323 to cut off the electrical circuit and stop heating. When heating next time, the heating circuit can be conducted by pressing the switch 7323 again.

[0095] Optionally, the switch 7323 may be located on the outer surface of the handle 72.

[0096] Furthermore, the liquid heating device further includes a base 9, and the pot body 7 is detachably disposed on the base 9.

[0097] What is described above is only a preferred embodiment of this application and does not limit the scope of the patent of this application. Under the inventive concept of this application, equivalent structural conversions made using the content of the specification and drawings of this application, or direct / indirect applications to other related technical fields are all included in the scope of patent protection of this application.

Description of Reference Numerals

[0098] 1 Lid body 11 Lower lid 111 First steam pipe 112 Second steam pipe 12 Upper lid 13 Hot water outlet 101 Transition chamber 102 Water passage port 103 Vent hole 2 Steam box 21 Wide part 22 Flat part 23 Bending part 24 Expansion part 201 Steam inlet 202 First steam outlet 203 Second steam outlet 3 Spacer 301 Pressure relief hole 41 Hot water valve body 421 Cam set 422 Transmission plate 423 Spring 43 Button 5 First sealing ring 61 Steam valve cap 62 Sealing iron ball 7 Pot body 71 Pot body 72 Handle 73 Steam detection switch module 731 Steam nozzle 732 Switching sensing part 7321 Bimetal sheet 7322 Link rod 7323 Switch 733 Second sealing ring 734 Third seal ring 8 Fourth seal ring 9 Base

Claims

1. A lid body provided with a water outlet, A steam box provided on the lid body, which has a steam inlet used to communicate with a boiling chamber, a first steam outlet communicating with the water outlet, and a second steam outlet used to communicate with a steam detection switch module, The steam entering from the steam inlet, part of it 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 A pot lid assembly characterized by the above.

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

3. The spacer is hermetically installed on the steam box and / or the lid body so as to block the gas path from the steam inlet to the water outlet, and a pressure relief hole is provided on the spacer The pot lid assembly according to claim 2, characterized by the above.

4. The spacer is provided at the first steam outlet so as to hermetically connect the steam box and the lid body The pot lid assembly according to claim 3, characterized by the above.

5. The spacer is a seal plug The pot lid assembly according to claim 4, characterized by the above.

6. The pressure relief hole is a circular hole, a slotted hole, or a cross-shaped hole The pot lid assembly according to claim 3, characterized by the above.

7. The water outlet is provided on one side of the lid body. A transition chamber communicating the water outlet and the first steam outlet is provided on the lid body, and a water passage port is provided at the bottom of the transition chamber. The pot lid assembly further includes a water outlet valve assembly provided on the lid body, and the water outlet valve assembly is used to open and close the water passage port The pot lid assembly according to any one of claims 1 to 6, characterized by the above.

8. The water outlet valve assembly includes: A water outlet valve body movably provided at the water passage port, A button provided on the lid body, A transmission mechanism that transmissionally connects the button and the water outlet valve body and is used to drive the water outlet valve body to move up and down to open and close the water passage port when the button is pressed, The pressing direction of the button and the moving direction of the water outlet valve body are not coaxial The pot lid assembly according to claim 7, characterized in that.

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

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

11. The steam box includes a wide portion, a flat portion, and a bent portion connected in sequence. The steam inlet is provided at the bottom of the wide portion, the first steam outlet is provided at the end of the bent portion, and the second steam outlet is provided on the side of the wide portion away from the bent portion, The gas flow cross-sectional area of the flat portion is smaller than the gas flow cross-sectional area of the wide portion The pot lid assembly according to claim 10, characterized in that.

12. A vent hole used to communicate the steam detection switch module and the second steam outlet is provided on the side of the lid body away from the water outlet The pot lid assembly according to any one of claims 1 to 6, characterized in that.

13. A steam valve cap is connected to the steam inlet, a sealing iron ball that can move is arranged in the steam valve cap, and the diameter of the sealing iron ball is larger than the diameter of the steam inlet The pot lid assembly according to any one of claims 1 to 6, characterized in that.

14. The lid body is Used to be attached to the pot body, a lower lid provided with the steam box and the water outlet, An upper lid provided above the steam box and assembled to the lower lid, The pot lid assembly according to any one of claims 1 to 6, characterized by including.

15. It includes a pot body and the pot lid assembly according to any one of claims 1 to 6. A boiling chamber is provided in the pot body, and the pot lid assembly is movably installed on the pot body so as to open and close the boiling chamber. The pot body includes a pot body and a handle. A steam detection switch module is provided in the handle, and the steam detection switch module communicates with the second steam outlet of the steam box. The steam detection switch module is a steam nozzle hermetically connected to the second steam outlet, and a switching sensing part provided in the steam nozzle. The switching sensing part includes a bimetal sheet, a link rod, and a switch. The link rod connects the bimetal sheet and the switch, and the bimetal sheet is used to drive the link rod to return the switch and cut off the electric circuit when it is deformed by heat. A liquid heating device characterized by the above.

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