Liquid heating container

Abstract

The utility model discloses a liquid heating container which comprises a container body, a cover body assembly and a switch box, and the container body is provided with a containing cavity. The cover body assembly can cover the containing cavity, and a steam channel is formed in the cover body assembly; a steam switch is arranged in the switch box, and the switch box is provided with an opening communicated with the steam channel so that steam in the steam channel can enter the switch box and trigger the steam switch. According to the technical scheme, liquid can be safely and efficiently heated, and the heating state of the liquid can be monitored in time.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a liquid heating container. Background Art

[0002] Electric kettles and other liquid heating containers generate a lot of steam when boiling water. Traditional liquid heating containers usually include a container body for storing liquid and a cover for sealing the container to keep the heat. However, with the development of technology and the improvement of user needs, simple heating functions can no longer meet the needs of modern life.

[0003] The existing liquid heating containers have the following limitations: ① During the heating process, the liquid may generate a large amount of steam. If the container is sealed too tightly, it may cause excessive internal pressure, posing a safety hazard. ② Traditional containers usually lack an effective heating control mechanism, making it difficult for users to accurately judge the heating status, which may cause the liquid to overheat or heat unevenly. Utility Model Content

[0004] The main purpose of the utility model is to provide a liquid heating container, which is intended to heat the liquid safely and efficiently and to monitor the heating state of the liquid in time.

[0005] To achieve the above-mentioned purpose, the liquid heating container proposed by the utility model comprises:

[0006] The container body has a containing cavity;

[0007] a cover assembly, the cover assembly being capable of covering the accommodating cavity, and a steam channel being provided in the cover assembly; and

[0008] A switch box is provided with a steam switch therein, and the switch box has an opening connected to the steam channel, so that the steam in the steam channel enters the switch box and triggers the steam switch.

[0009] Optionally, a water outlet is also provided on the cover body assembly, and the steam channel includes an inlet channel and a main channel, one end of the inlet channel is connected to the accommodating cavity, and the other end is connected to the opening and the main channel, and the end of the main channel away from the opening is connected to the water outlet.

[0010] Optionally, the cover assembly includes a steam box and an air inlet pipe portion, the inlet channel is arranged in the air inlet pipe portion, the main channel is arranged in the steam box, and the air inlet pipe portion is arranged below the steam box, and the steam inlet of the steam box and the air inlet pipe portion are commonly connected to the opening.

[0011] Optionally, the inlet channel is arranged on a side of the cover assembly away from the water outlet.

[0012] Optionally, the steam channel further includes a steam outlet connected to the main channel, the steam outlet is connected to the water outlet, and a height of the steam outlet is lower than a height of the main channel.

[0013] Optionally, the cover assembly includes a steam box, the main channel is arranged in the steam box, the steam box is provided with a raised portion protruding toward the accommodating cavity, and the raised portion is arranged at one end of the main channel close to the water outlet, and the steam outlet is arranged on a side of the raised portion facing the accommodating cavity.

[0014] Optionally, a water outlet channel is further provided on the cover body assembly, the water outlet is connected to the accommodating cavity through the water outlet channel, and a water outlet valve is provided on the side of the water outlet channel facing the accommodating cavity, and the steam outlet is connected to one end of the water outlet channel facing the accommodating cavity.

[0015] Optionally, a water outlet switch is provided on the top of the cover assembly, the water outlet valve is provided at one end of the water outlet channel facing the accommodating cavity, the water outlet switch and the water outlet valve are elastically matched, and the water outlet valve body blocks the water outlet channel;

[0016] The water outlet switch enables the water outlet valve body to open the water outlet flow channel.

[0017] Optionally, the water outlet switch has a pressing portion, the water outlet valve includes a water outlet valve body and an elastic member, the water outlet valve body includes a mounting portion and a blocking portion, the blocking portion blocks an edge of the water outlet flow channel toward one end of the accommodating cavity, a portion of the mounting portion passes through the water outlet flow channel and abuts against the pressing portion, the elastic member is sleeved on the mounting portion, and one end of the elastic member is connected to the top of the water outlet flow channel;

[0018] The elastic member causes the blocking portion to have a tendency to move toward the water outlet flow channel to close the water outlet flow channel; the pressing portion pushes the blocking portion to move toward the accommodating cavity to open the water outlet flow channel;

[0019] The steam outlet is communicated with the water outlet channel and is located above the blocking portion.

[0020] Optionally, the main channel has a weakening section, and the weakening section is used to weaken the impact strength of steam when it flows out of the main channel.

[0021] Optionally, the cross-sectional area of ​​the weakened section is smaller than the cross-sectional area of ​​the remaining portion of the main channel; and / or,

[0022] There are a plurality of weakening sections, and the plurality of weakening sections are arranged at intervals in the main channel.

[0023] Optionally, the cover assembly includes a steam box, and the main channel is provided in the steam box;

[0024] The steam box includes a first box part, a second box part and a weakening pipe section connecting the first box part and the second box part, the first box part is arranged close to the switch box, the second box part is arranged close to the water outlet, and the weakening section is arranged on the weakening pipe section.

[0025] Optionally, along the axial direction of the main channel, at least two of the plurality of flow areas of the first box portion are arranged differently; and / or,

[0026] The first box portion has a plurality of first communicating sections arranged at intervals, and the plurality of first communicating sections are all connected to the opening and the second box portion; and / or,

[0027] Along the axial direction of the main channel, at least two of the plurality of flow areas of the second box portion are arranged differently; and / or,

[0028] The second box portion has a plurality of second communication sections arranged at intervals, and the plurality of second communication sections are all connected to the first box portion and the water outlet.

[0029] Optionally, the switch box is provided with a drain hole, and the container body is provided with a drain pipe connected to the outside, and the drain hole is connected to the drain pipe to discharge the steam in the switch box.

[0030] Optionally, the cross-sectional area of ​​the drainage hole is smaller than the cross-sectional area of ​​the drainage pipe; and / or,

[0031] The steam switch is arranged toward the opening, and the drain hole is arranged on a side of the switch box close to the container body.

[0032] Optionally, the liquid heating container further includes a kettle handle assembly, the container body includes a shell and an inner liner disposed in the shell, the inner liner forms the accommodating cavity, and the drain pipe is disposed between the shell and the inner liner; and / or, the drain pipe is disposed in the kettle handle assembly and extends toward the bottom of the liquid heating container.

[0033] Optionally, the switch box is arranged at one end of the handle assembly facing the cover assembly, and the drain hole is connected to the drain pipe through a connecting pipe.

[0034] Optionally, an air inlet valve is installed at one end of the steam channel facing the accommodating chamber.

[0035] Optionally, the air intake valve comprises a valve body support and an air intake valve body mounted on the steam channel, the valve body support forms a limiting space, the air intake valve body is movably mounted in the limiting space, and the limiting space limits the up and down movement of the air intake valve body, and the valve body support is provided with a through hole connecting the steam channel and the accommodating cavity;

[0036] Under the action of gravity, the air intake valve body moves downward to block the through hole, and under the action of steam, the air intake valve body moves upward to open the through hole;

[0037] When the liquid heating container is tilted, under the action of gravity, the air inlet valve body moves towards the direction close to the steam channel under the restriction of the limiting space to block the steam channel.

[0038] Optionally, the intake valve body is configured as a sphere; and / or,

[0039] The side wall of the limiting space is provided with a guide surface, the guide surface is arranged at an inclination, and the limiting space is arranged to gradually expand along the direction approaching the steam channel.

[0040] The technical solution of the utility model is to provide a accommodating cavity in the container body, and the cover body assembly can cover the accommodating cavity, thereby improving the sealing of the liquid heating container, and further improving the heating efficiency of the liquid heating container. When heated, the water in the liquid heating container will generate steam, and the steam will rise and flow into the steam channel, and enter the switch box through the opening of the steam channel. As the temperature rises, when the water boils, it reaches a preset steam pressure, thereby triggering the steam switch, so that the liquid heating container stops working, so that the user can directly monitor the heating status of the liquid, and when the liquid in the liquid heating container reaches the steam pressure, the liquid heating container can be stopped by triggering the steam switch, thereby improving the safety of the use of the liquid heating container and reducing the possibility of safety hazards due to excessive pressure inside the liquid heating container. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0042] Figure 1 This is a structural schematic diagram of an embodiment of a liquid heating container of the utility model;

[0043] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0044] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0045] Figure 4 for Figure 1 A partial enlarged view of point C in the middle;

[0046] Figure 5 for Figure 1 A partial enlarged view of point D in the middle;

[0047] Figure 6 for Figure 1 Assembly drawing of the switch box and drain pipe;

[0048] Figure 7 for Figure 1 Schematic diagram of the internal structure of the switch box;

[0049] Figure 8 for Figure 1 Schematic diagram of the installation structure of the steam box;

[0050] Fig. 9 for Figure 8 a cross-sectional view of the middle cover assembly;

[0051] Fig.10 for Figure 1 A schematic diagram of the structure of the steam box;

[0052] Fig.11 for Fig.10 Cross-sectional view of the steam box.

[0053] Description of Figure Numbers:

[0054] Label name Label name 100 Liquid heating container 124 Intake pipe 110 Container body 125 Intake valve 111 Accommodation cavity 125a Valve body bracket 112 Drain 125b Intake valve body 113 case 125c Limited space 114 Liner 125d Guide surface 115 Connecting pipe 126 Outlet channel 120 Cover assembly 130 Steam channel 121 Water outlet 131 Steam switch 122 Outlet valve 132 Entryway 122a Water outlet valve body 133 Main Channel 122b Installation Department 133a Steam inlet 122c Blocking Department 133b Steam outlet 122d Elastic parts 134 Weakened section 123 Steam Box 140 Switch Box 123a First box 141 Opening 123b Second box 142 Drain hole 123c Weakened pipe section 143 Sealing sleeve 123d The first connecting segment 150 Pot handle assembly 123e The second connecting segment 160 Water switch 123f Raised part 161 Pressing part

[0055] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0057] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0058] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B as an example", including solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0059] The utility model provides a liquid heating container 100, and the liquid heating container 100 can be an electric kettle or the like.

[0060] In the embodiment of the present utility model, Figures 1 to 11 As shown, the liquid heating container 100 comprises:

[0061] The container body 110 has a receiving cavity 111;

[0062] A cover assembly 120, the cover assembly 120 can cover the accommodating cavity 111, and a steam channel 130 is provided in the cover assembly 120; and

[0063] The switch box 140 is provided with a steam switch 131 therein. The switch box 140 has an opening 141 communicating with the steam channel 130 , so that the steam in the steam channel 130 enters the switch box 140 and triggers the steam switch 131 .

[0064] Specifically, a accommodating cavity 111 is provided in the container body 110, and the cover assembly 120 can cover the accommodating cavity 111. When the cover assembly 120 covers the accommodating cavity 111, it can be sealed to the container body 110 through a sealing structure such as a sealing ring, thereby improving the sealing of the liquid heating container 100 and further improving the heating efficiency of the liquid heating container 100; the cover assembly 120 can also be opened relative to the accommodating cavity 111, thereby making it convenient for users to add water. When heated, the water in the liquid heating container 100 will produce steam, which rises and flows into the steam channel 130, and enters the switch box 140 through the opening 141 of the steam channel 130. As the temperature rises, when the water boils, it reaches a preset steam pressure, thereby triggering the steam switch 131, causing the liquid heating container 100 to stop working, thereby making it convenient for the user to directly monitor the heating status of the liquid, and when the liquid in the liquid heating container 100 reaches the steam pressure, the liquid heating container 100 can be stopped by triggering the steam switch 131, thereby improving the safety of the use of the liquid heating container 100 and reducing the possibility of safety hazards due to excessive pressure inside the liquid heating container 100.

[0065] Reference Figure 1 , Figure 2 , Figures 8 to 11 In one embodiment, the cover assembly 120 is further provided with a water outlet 121, and the steam channel 130 includes an inlet channel 132 and a main channel 133. One end of the inlet channel 132 is connected to the accommodating chamber 111, and the other end is connected to the opening 141 and the main channel 133. The end of the main channel 133 away from the opening 141 is connected to the water outlet 121. Specifically, the water outlet 121 is used to pour out the liquid in the accommodating chamber 111. The steam channel 130 includes an inlet channel 132 and a main channel 133. One end of the inlet channel 132 is connected to the accommodating chamber 111, and an air intake valve 125 is provided at the end of the inlet channel 132 facing the accommodating chamber 111. When the water is heated to a preset temperature, the pressure in the accommodating chamber 111 increases to a preset pressure, thereby pushing open the air intake valve 125, allowing steam to enter the inlet channel 132. The other end of the inlet channel 132 is connected to the opening 141 and the main channel 133, so that the steam flowing out of the inlet channel 132 is divided into two parts (refer to Figure 1 and Figure 2 ), one part enters the switch box 140 to trigger the steam switch 131 for monitoring the liquid heating situation; the other part enters the main channel 133, and the main channel 133 is connected to the water outlet 121 through the water outlet channel 126, so that the steam flows from the main channel 133 to the water outlet 121, and then flows out from the water outlet 121, thereby discharging part of the water vapor to reduce the internal pressure of the liquid heating container 100 and improve the safety of the use of the liquid heating container 100.

[0066] In one embodiment, the cover assembly 120 includes a steam box 123 and an air inlet pipe portion 124, the inlet channel 132 is opened in the air inlet pipe portion 124, the main channel 133 is opened in the steam box 123, the air inlet pipe portion 124 is arranged below the steam box 123, and the steam inlet 133a of the steam box 123 is connected to the air inlet pipe portion 124 together with the opening 141. Specifically, the air intake pipe portion 124 is used to install the air intake valve 125, so as to facilitate the installation of the air intake valve 125. Therefore, the air intake pipe portion 124 is arranged below the steam box 123. One end of the steam box 123 has a steam inlet 133a. The steam inlet 133a of the steam box 123 and the air intake pipe portion 124 are connected to the opening 141. In this embodiment, the steam inlet 133a, the end of the air intake pipe portion 124 communicating with the opening 141 and the axial direction of the opening 141 are arranged in parallel, and the end of the air intake pipe portion 124 communicating with the opening 141 is located below the steam inlet 133a. The three are thereby connected and fixed via a sealing sleeve 143, one end of the sealing sleeve 143 being sealedly connected to the opening 141, and the other end being sealedly connected to the steam inlet 133a and the outer periphery formed by one end of the air inlet pipe portion 124 connected to the opening 141. Compared with the use of a three-way pipe, this solution can reduce the flow path of the steam from the inlet channel 132 to the switch box 140, and the flow path of the steam from the inlet channel 132 to the steam box 123, and can also reduce the space required for the connection between the steam box 123 and the air inlet pipe portion 124 and the switch, thereby reducing the thickness of the cover assembly 120.

[0067] Of course, in other embodiments, the steam inlet 133a, the end of the air intake pipe 124 communicating with the opening 141, and the opening 141 may also be connected by a three-way pipe. And because the end of the air intake pipe 124 communicating with the opening 141 and the axial direction of the opening 141 are arranged parallel (parallel to the horizontal direction), and the other end of the air intake pipe is arranged toward the accommodating chamber 111 (parallel to the vertical direction), the air intake pipe 124 is configured as a section of bent pipe, which is convenient for both the installation of the air intake valve 125 and the connection of the switch box 140.

[0068] Further, see Figure 1 and Figure 2 The inlet channel 132 is disposed on a side of the cover assembly 120 away from the water outlet 121. That is, the inlet channel 132 is disposed close to the switch box 140, so that when a user pours water or the liquid enhancement container is accidentally tipped over, the water flow will not overflow into the inlet channel 132 in the reverse direction, and the distance from the steam flow channel to the steam switch 131 can be reduced, thereby reducing the flow path of the steam.

[0069] In order to facilitate the partial liquefaction of the water vapor in the main channel 133 to be discharged from the steam channel 130, refer to Figure 1 and Figure 3In one embodiment, the steam channel 130 further includes a steam outlet 133b connected to the main channel 133, the steam outlet 133b is connected to the water outlet 121, and the height of the steam outlet 133b is lower than the height of the main channel 133. Specifically, the steam outlet 133b is connected to the main channel 133 and the water outlet channel 126, so that the partially liquefied liquid in the main channel 133 can be discharged from the steam outlet 133b to the water outlet channel 126, so that when the water outlet valve 122 is opened, it flows back to the accommodating chamber 111, or is discharged with the liquid in the water outlet channel 126. And the height of the steam outlet 133b is lower than the height of the main channel 133, so as to facilitate the discharge of the liquid in the main channel 133 and reduce the possibility of liquid accumulation in the main channel 133.

[0070] Among them, the steam outlet 133b can be directly connected to the main channel 133, that is, the steam outlet 133b is the opening 141 of the main channel 133 close to the water outlet 121. At this time, the steam channel 130 can be directly opened at the bottom of the main channel 133; the steam outlet 133b can also be indirectly connected to the main channel 133, such as the steam outlet 133b is connected to the main channel 133 through another preset channel, and the preset channel is set at an angle to the main channel 133, and the preset channel extends downward, and the steam outlet 133b is set at one end of the preset channel away from the main channel 133.

[0071] Further, the cover assembly 120 includes a steam box 123, a main channel 133 is disposed on the steam box 123, a bulge 123f is disposed on the steam box 123, the bulge 123f is disposed on the end of the main channel 133 close to the water outlet 121, and a steam outlet 133b is disposed on a side of the bulge 123f facing the accommodating chamber 111. Specifically, a part of the steam box 123 at one end of the main channel 133 close to the water outlet 121 bulges toward the accommodating chamber 111 to form the bulge 123f, thereby facilitating the processing of the steam box 123, and the steam outlet 133b is disposed on a side of the bulge 123f facing the accommodating chamber 111, thereby facilitating the liquid in the main channel 133 to flow to the bulge 123f due to gravity, and then flow out of the steam outlet 133b, thereby reducing the possibility of liquid accumulating in the main channel 133.

[0072] The cover assembly 120 is also provided with a water outlet channel 126, through which the water outlet 121 is connected to the accommodating chamber 111, and a water outlet valve 122 is provided on the side of the water outlet channel 126 facing the accommodating chamber 111, and the steam outlet 133b is connected to one end of the water outlet channel 126 facing the accommodating chamber 111. Specifically, a water outlet channel 126 is also provided on the cover body assembly 120, and the water outlet 121 is connected to the accommodating chamber 111 through the water outlet channel 126, and a water outlet valve 122 is provided on the side of the water outlet channel 126 facing the accommodating chamber 111. The water outlet valve 122 is configured as a normally closed valve, thereby reducing heat loss during the heating process, and reducing the possibility of steam being directly discharged from the water outlet 121 during the heating process, and the steam outlet 133b is connected to one end of the water outlet channel 126 facing the accommodating chamber 111, so that the water outlet valve 122 can simultaneously control the connection between the water outlet channel 126 and the accommodating chamber 111, and the connection between the main channel 133 and the accommodating chamber 111, so that when the user pours out hot water, the water vapor in the main channel 133 is discharged from the water outlet 121 along with the water flow, and after the partially liquefied water vapor is discharged from the steam outlet 133b, it can also be discharged along with the liquid in the water outlet channel 126.

[0073] To facilitate the opening of the water outlet valve 122, refer again to Figure 1 and Figure 3 A water outlet switch 160 is provided on the top of the cover assembly 120, and a water outlet valve 122 is provided at one end of the water outlet channel 126 facing the accommodating chamber 111. The water outlet switch 160 and the water outlet valve 122 are elastically matched, and the water outlet valve body 122a blocks the water outlet channel 126;

[0074] The water outlet switch 160 enables the water outlet valve body 122 a to open the water outlet flow channel 126 .

[0075] Specifically, because the water outlet valve 122 is a normally closed valve, the water outlet switch 160 and the water outlet valve 122 are elastically matched in a normal state (when the user does not control the water outlet switch 160), and the water outlet valve body 122a blocks the water outlet flow channel 126, so that during the heating process of the liquid heating container 100, water vapor can only be discharged through the steam box 123, and cannot be directly discharged through the water outlet 121, thereby ensuring the sealing effect of the liquid heating container 100 and improving the heating efficiency of the liquid heating container 100; if the liquid heating container 100 accidentally falls, it can also reduce the possibility of water flowing out of the liquid heating container 100. The water outlet switch 160 and the water outlet valve 122 are elastically matched. When pouring water, the user controls the water outlet to make the water outlet valve body 122a open the water outlet flow channel 126. Therefore, the water outlet switch 160 is arranged on the top of the cover assembly 120, so as to facilitate user operation.

[0076] Further, the water outlet switch 160 has a pressing portion 161, the water outlet valve 122 includes a water outlet valve body 122a and an elastic member 122d, the water outlet valve body 122a includes a mounting portion 122b and a blocking portion 122c, the blocking portion 122c blocks the edge of the water outlet flow channel 126 toward one end of the accommodating chamber 111, a portion of the mounting portion 122b passes through the water outlet flow channel 126 and abuts against the pressing portion 161, the elastic member 122d is sleeved on the mounting portion 122b, and one end of the elastic member 122d is connected to the upper side of the water outlet flow channel 126;

[0077] The elastic member 122d makes the blocking portion 122c have a tendency to move toward the water outlet channel 126 to close the water outlet channel 126; the pressing portion 161 pushes the blocking portion 122c to move toward the accommodating chamber 111 to open the water outlet channel 126;

[0078] The steam outlet 133b is communicated with the water outlet channel 126 and is located above the blocking portion 122c.

[0079] Specifically, the pressing portion 161 is used for being pressed by a user, one end of the water outlet valve body 122a abuts against the pressing portion 161, and the other end passes through the water outlet flow channel 126 to block the edge of the water outlet flow channel 126 at one end facing the accommodating chamber 111. The user presses the pressing portion 161, so that the pressing portion 161 further pushes the water outlet valve body 122a to move downward, thereby opening the water outlet flow channel 126. The elastic member 122d is sleeved on the mounting portion 122b, and one end of the elastic member 122d is connected to the upper part of the water outlet flow channel 126, and the elastic member 122d makes the blocking portion 122c have a tendency to move toward the water outlet flow channel 126, so that the blocking portion 122c blocks the edge of the water outlet flow channel 126 at one end facing the accommodating chamber 111, so as to close the water outlet flow channel 126, thereby making the water outlet valve 122 normally closed. The water outlet valve body 122a includes a mounting portion 122b and a blocking portion 122c, wherein the mounting portion 122b extends vertically and is used to cooperate with the pressing portion 161 and the elastic member 122d, and the blocking portion 122c is configured as a plate-like structure and is disposed at one end of the water outlet flow channel 126 facing the accommodating chamber 111 to block the water outlet flow channel 126. The steam outlet 133b is disposed above the blocking portion 122c, so that when the blocking portion 122c blocks the water outlet flow channel 126, the steam outlet 133b is blocked at the same time, thereby controlling the communication between the steam outlet 133b and the accommodating chamber 111.

[0080] Reference Figure 1 , Figure 2 , Figures 8 to 11In one embodiment, the main channel 133 has a weakening section 134, which is used to weaken the impact strength of steam when it flows out of the main channel 133. Specifically, in order to reduce the impact strength of steam in the main channel 133 when it flows out of the water outlet 121, the main channel 133 has a weakening section 134, which can slow down the flow speed of steam and promote steam liquefaction, thereby reducing the impact speed of steam and reducing the amount of steam, thereby promoting steam liquefaction and outflow. The weakening section 134 can be configured as a detour section arranged in the main channel 133, thereby extending the flow path of steam, increasing steam resistance, and promoting steam liquefaction.

[0081] In one embodiment, the cross-sectional area of ​​the weakening section 134 is smaller than the cross-sectional area of ​​the rest of the main channel 133, that is, the weakening section 134 is configured as a narrowing section provided in the main channel 133. Since the inner diameter of the weakening section 134 is small, the steam resistance is increased, so that after the steam passes through the weakening section 134, the flow velocity is greatly weakened, and the steam liquefaction is promoted. When the steam is discharged from the main channel 133, the flow rate and the steam flow amount are reduced. In order to ensure the weakening effect on the steam, the weakening section 134 should have a certain depth, and the inner wall of the weakening section 134 can be provided with a plurality of protrusions, so as to increase the contact area between the steam and the inner wall of the weakening section 134, increase the steam resistance, and promote the steam liquefaction.

[0082] Preferably, the cross-sectional area from the weakening section 134 to the cross-sectional area of ​​the position adjacent to the weakening section 134 suddenly increases, so that when the steam flows into the weakening section 134, only a portion can directly flow into the weakening section 134, and the other portion will first contact the end wall of the inlet of the weakening section 134, thereby promoting steam liquefaction and further reducing the flow rate of steam flowing into the weakening section 134. Of course, in other embodiments, the cross-sectional area from the weakening section 134 to the cross-sectional area of ​​the position adjacent to the weakening section 134 gradually increases.

[0083] In one embodiment, the width of the weakened section 134 is smaller than the width of the rest of the main channel 133. The width of the weakened section 134 is the inner diameter of the steam box 123 along the width direction. When the liquid heating container 100 is placed normally, the length direction and width direction of the steam box 123 are the horizontal dimensions of the steam box 123. The main channel 133 extends along the length direction of the steam box 123, so the width direction of the steam box 123 is parallel. The width of the weakened section 134 is smaller than the width of the rest of the main channel 133, that is, the weakened section 134 is set to be smaller than the width of the rest of the main channel 133, so that the cross-sectional area of ​​the weakened section 134 is smaller than the cross-sectional area of ​​the rest of the main channel 133.

[0084] In another embodiment, the height of the weakened section 134 is less than the height of the remaining portion of the main channel 133. The height of the weakened section 134 is the inner diameter of the steam box 123 along the height direction. When the liquid heating container 100 is placed normally, the height direction of the steam box 123 is the size of the steam box 123 in the vertical direction. The height of the weakened section 134 is less than the height of the remaining portion of the main channel 133, that is, the height of the weakened section 134 is reduced relative to the height of the remaining portion of the main channel 133, so that the cross-sectional area of ​​the weakened section 134 is smaller than the cross-sectional area of ​​the remaining portion of the main channel 133.

[0085] In yet another embodiment, the width of the weakened section 134 is smaller than the width of the remaining portion of the main channel 133 , and the height of the weakened section 134 is smaller than the height of the remaining portion of the main channel 133 .

[0086] In one embodiment, there are multiple weakening sections 134, and multiple weakening sections 134 are arranged at intervals in the main channel 133. That is, the steam box 123 has a multi-stage deceleration effect on the steam, thereby further increasing the steam resistance and promoting the liquefaction of the steam. In this embodiment, multiple weakening sections 134 are arranged at intervals in the main channel 133, that is, there are multiple reduction sections along the main channel 133, and the multiple reduction sections are arranged at intervals, so that the steam entering the main channel 133 is continuously decelerated by the reduction sections, and the cross-sectional areas of the multiple reduction sections can be the same or different.

[0087] In another embodiment, there are multiple weakening sections 134, and the multiple weakening sections 134 are sequentially arranged in the main channel 133. At this time, preferably, the cross-sectional areas of the multiple weakening sections 134 are different.

[0088] In one embodiment, the cover assembly 120 includes a steam box 123, and the main channel 133 is disposed in the steam box 123;

[0089] The steam box 123 includes a first box portion 123a, a second box portion 123b, and a weakening pipe section 123c connecting the first box portion 123a and the second box portion 123b. The first box portion 123a is disposed near the switch box 140, the second box portion 123b is disposed near the water outlet 121, and the weakening section 134 is disposed at the weakening pipe section 123c. Specifically, the first box portion 123a is disposed near the switch box 140, so the steam inlet 133a is disposed at the first box portion 123a, the second box portion 123b is disposed near the water outlet 121, so the steam outlet 133b is disposed at the second box portion 123b, so that after the steam flows out from the air inlet pipe portion 124, it flows into the first box portion 123a from the steam inlet 133a, and then is weakened by the weakening pipe section 123c so that part of the steam is liquefied, and the remaining steam flows into the second box portion 123b, and then flows out of the main channel 133 from the steam outlet 133b. Preferably, the size of the steam outlet 133b is set to be smaller, so as to help further increase the flow resistance of the steam out of the second box part 123b, and further promote the liquefaction of the steam.

[0090] The steam box 123 is configured to be flat, which helps to reduce the thickness of the cover assembly 120. The steam box 123 is formed by connecting multiple sub-boxes via a weakening pipe section 123c. The inner diameter of the weakening pipe section 123c is much smaller than the inner diameters of the first box portion 123a and the second box portion 123b, which facilitates the processing and forming of the steam box 123. In this embodiment, the steam box 123 has two sub-boxes. Of course, in other embodiments, the steam box 123 can also have more than two sub-boxes, and the multiple sub-boxes are arranged in a direction close to the water outlet 121, and two adjacent sub-boxes are connected by a weakening pipe section 123c, thereby forming a multi-stage weakening.

[0091] Reference Figures 8 to 11 In one embodiment, along the axial direction of the main channel 133, at least two of the multiple flow areas of the first box portion 123a are set differently. Specifically, along the axial direction of the main channel 133, the first box portion 123a can have multiple cross-sections, and the cross-sectional area is the flow area of ​​the first box portion 123a, and at least two of the multiple flow areas are set differently, that is, along the length direction of the steam box 123, the width and / or height of the first box portion 123a are variable, and can be set according to the internal space of the cover assembly 120, so that the internal space of the cover assembly 120 can be effectively utilized, and the variable flow area can further block the flow of steam and promote steam liquefaction.

[0092] In another embodiment, at least two of the plurality of flow areas of the second box portion 123b are set differently along the axial direction of the main channel 133. Specifically, along the axial direction of the main channel 133, the second box portion 123b may have a plurality of cross sections, the cross-sectional area being the flow area of ​​the second box portion 123b, and at least two of the plurality of flow areas are set differently, that is, along the length direction of the steam box 123, the width and / or height of the second box portion 123b are variable, and may be set according to the internal space of the cover assembly 120, so that the internal space of the cover assembly 120 can be effectively utilized, and the variable flow area can further block the flow of steam and promote steam liquefaction.

[0093] Refer again Figures 8 to 11 In one embodiment, the first box portion 123a has a plurality of first connecting sections 123d arranged at intervals, and the first connecting sections 123d are all connected to the steam inlet 133a and the second box portion 123b. Specifically, the first box portion 123a can have a plurality of first connecting sections 123d arranged in parallel, and the two ends of the plurality of first connecting sections 123d are connected to each other, thereby further increasing the contact area between the steam and the first box portion 123a and promoting the liquefaction of the steam. The gap between two adjacent first connecting sections 123d can be used for the installation of other structures of the cover assembly 120, thereby facilitating the structural design of the cover assembly 120.

[0094] In another embodiment, the second box portion 123b has a plurality of second connecting sections 123e arranged at intervals, and the second connecting sections 123e are all connected to the first box portion 123a and the water outlet 121. Specifically, the second box portion 123b can have a plurality of second connecting sections 123e arranged in parallel, and the two ends of the plurality of second connecting sections 123e are connected to each other, thereby further increasing the contact area between the steam and the second box portion 123b and promoting the liquefaction of the steam. And the gap between two adjacent second connecting sections 123e can be used for the installation of other structures of the cover assembly 120, thereby facilitating the structural design of the cover assembly 120.

[0095] In order to facilitate the discharge of steam in the switch box 140 and reduce the possibility of excessive steam pressure, in one embodiment, the switch box 140 is provided with a drain hole 142, and the container body 110 is provided with a drain pipe 112 connected to the outside, and the drain hole 142 is connected to the drain pipe 112 to discharge the steam in the switch box 140. Specifically, the switch box 140 is provided with a drain hole 142, and the drain hole 142 is connected to the drain pipe 112, so as to facilitate the discharge of steam and liquefied liquid. The drain pipe 112 is connected to the outside air, so as to facilitate the discharge of steam and liquefied liquid, and the drain pipe 112 is arranged on the container body 110, so that the drain pipe 112 guides the steam in the steam channel 130 to the pot body of the liquid heating container 100, so that the airflow direction of the water vapor discharged by the drain pipe 112 can be sprayed from the side or bottom of the liquid heating container 100. Compared to the prior art, in which the outlet of the steam channel 130 is disposed on the cover assembly 120 and sprays upward, this solution can greatly reduce the risk of scalding the user by the steam generated by the liquid heating container 100, thereby improving the safety of use of the liquid heating container 100.

[0096] Preferably, the drain hole of the drain pipe 112 is disposed at the bottom of the container body 110, further reducing the risk of scalding the user by the steam generated by the liquid heating container 100. The switch box 140 can be installed on the cover assembly 120, or on the container body 110; or on the kettle handle assembly 150, and can be installed according to actual needs.

[0097] In one embodiment, the cross-sectional area of ​​the drain hole 142 is smaller than the cross-sectional area of ​​the drain pipe 112. Specifically, the cross-sectional area of ​​the drain hole 142 is smaller than the cross-sectional area of ​​the drain pipe 112, that is, the diameter of the drain hole 142 is smaller than the diameter of the drain pipe 112, so that the drain hole 142 also has a pressure relief function, which can ensure that there is enough pressure in the switch box 140 to trigger the steam switch 131.

[0098] To further ensure that the liquid heating container 100 is powered off in time, in one embodiment, refer to Figure 1 , Figure 6 and Figure 7, the steam switch 131 is arranged toward the opening 141, and the drain hole 142 is arranged on the side of the switch box 140 close to the container body 110. Specifically, the steam switch 131 is arranged toward the opening 141, so that the steam entering the switch box 140 from the opening 141 directly flows to the steam switch 131, which helps to improve the sensitivity of the steam switch 131. The drain hole 142 is located between the steam switch 131 and the opening 141, which can not only conveniently and timely release the pressure of the steam in the switch box 140, but also does not affect the sensitivity of the steam switch 131. And the drain hole 142 is arranged on the side of the switch box 140 close to the container body 110, so as to facilitate the installation of the drain hole 142 and the drain hole. Preferably, the drain hole 142 is configured as a micro hole, and in order to adapt to the shape of the kettle handle assembly 150, the steam switch 131 is inclined relative to the plane where the opening 141 is located, and the drain hole 142 is arranged on the box wall facing the steam switch 131.

[0099] Reference Figure 1 , Figures 4 to 7 In one embodiment, the liquid heating container 100 further includes a handle assembly 150, the container body 110 includes a shell 113 and an inner liner 114 disposed in the shell 113, the inner liner 114 forms a receiving cavity 111, and the drain pipe 112 is disposed between the shell 113 and the inner liner 114 and extends to the bottom of the cover assembly 120. Specifically, in order to ensure the heat preservation effect of the liquid heating container 100 and reduce the overheating of the outer surface of the container body 110 when the liquid heating container 100 boils water and scalds the user, the container body 110 includes a shell 113 and an inner liner 114 disposed in the shell 113, the inner liner 114 is nested in the shell 113, and is spaced from the shell 113, so the drain pipe 112 is disposed between the shell 113 and the inner liner 114, so there is no need to reserve additional space for the drain pipe 112, and the installation space is large, which is conducive to the installation of the drain pipe 112 and helps the drain pipe 112 to extend to the bottom of the cover assembly 120. The container body 110 includes a bottom plate, and a drainage hole connected to the drainage pipe 112 can be directly arranged on the bottom plate, so that the steam in the switch box 140 is ejected through the drainage hole.

[0100] In another embodiment, the drain pipe 112 is disposed in the kettle handle assembly 150 and extends to the bottom of the cover assembly 120. Therefore, there is no need to reserve additional space for the drain pipe 112, and the installation space is large, which is helpful for the installation of the drain pipe 112 and for the drain pipe 112 to extend to the bottom of the cover assembly 120. At this time, in order to reduce the possibility of the kettle handle assembly 150 being overheated, the outer surface of the kettle handle assembly 150 is usually provided with a heat insulating member.

[0101] Furthermore, the switch box 140 is disposed at one end of the handle assembly 150 facing the cover assembly 120 , and the drain hole 142 is connected to the drain pipe 112 through the connecting pipe 115 . Specifically, in order to ensure that the liquid heating container 100 is powered off in time to reduce overheating, the channel connecting the steam channel 130 and the opening 141 should not be too long, otherwise it will affect the control accuracy of the steam switch 131. Therefore, the switch box 140 is arranged at the end of the kettle handle assembly 150 facing the cover body assembly 120, and the switch box 140 is often located at the junction of the kettle handle assembly 150 and the cover body assembly 120, thereby simplifying the structure of the cover body assembly 120, reducing the distance between the steam channel 130 and the opening 141, reducing the size of the kettle body, and increasing the volume of the accommodating chamber 111. However, since the drain pipe 112 is arranged on the container body 110 or the kettle handle assembly 150, in order to facilitate the connection of the drain pipe 112 with the container body 110, the drain hole 142 is connected to the drain pipe 112 through the connecting pipe 115, thereby facilitating the connection between the drain hole 142 and the drain pipe 112.

[0102] In order to ensure sealing and reduce steam leakage. In one embodiment, refer to Figure 3 and Figure 4 The outer surface of the switch box 140 is arranged on the plug hole, the connecting pipe 115 is sleeved on the plug hole, and the corresponding drain pipe 112 is sleeved on the end of the connecting pipe 115 away from the plug hole. The drain pipe 112 and the connecting pipe 115 can be configured as a hose or a hard pipe.

[0103] Reference Figure 1 , Figure 5 and Figure 7 In one embodiment, an air inlet valve 125 is installed at one end of the steam channel 130 facing the accommodating chamber 111. Specifically, the air inlet valve 125 is also configured as a normally closed valve. Only when the liquid in the liquid heating container 100 is heated to a preset temperature, the water vapor causes the pressure in the liquid heating container 100 to increase, thereby pushing the air inlet valve 125 open. The air inlet valve 125 is arranged at one end of the air inlet pipe section 124 facing the accommodating chamber 111. The air inlet pipe section has a connecting hole facing the accommodating chamber 111, and the air inlet valve 125 is installed in the connecting hole.

[0104] In addition, the air inlet valve 125 also has an anti-dumping function. When the liquid heating container 100 dumps, the air inlet valve 125 can be automatically closed, thereby blocking the connecting hole and reducing the possibility of water in the accommodating cavity 111 entering the steam channel 130 through the connecting hole, thereby achieving the purpose of preventing the liquid heating container 100 from dumping.

[0105] Further, the air intake valve 125 includes a valve body support 125a and an air intake valve body 125b installed on the steam channel 130, the valve body support 125a forms a limiting space 125c, the air intake valve body 125b is movably installed in the limiting space 125c, and the limiting space 125c limits the up and down movement of the air intake valve body 125b, and the valve body support 125a is provided with a through hole connecting the steam channel 130 and the accommodating chamber 111;

[0106] Under the action of gravity, the air intake valve body 125b moves downward to block the through hole, and under the action of steam, the air intake valve body 125b moves upward to open the through hole;

[0107] When the liquid heating container 100 is tipped over, under the action of gravity, the air inlet valve body 125b moves toward the direction close to the steam channel 130 under the restriction of the limiting space 125c to block the steam channel 130.

[0108] Specifically, the valve body bracket 125a is arranged below the connecting hole, and the valve body bracket 125a can enclose a limited space 125c below the connecting hole for placing the intake valve body 125b. The intake valve body 125b is movably installed in the limited space 125c, and under the restriction of the limited space 125c, the valve body can only move up and down. Therefore, the inner diameter of the limited space 125c is slightly larger than the diameter of the intake valve body 125b, thereby ensuring that the intake valve body 125b can move up and down in the limited space 125c, and can also limit the horizontal displacement of the intake valve body 125b. The valve body bracket 125a is provided with a through hole. Under the action of gravity, the valve body can block the through hole, so the through hole can be set at the bottom and / or side of the valve body bracket 125a; after the water is heated, the steam pressure in the accommodating chamber 111 gradually increases, and the steam overcomes the gravity of the intake valve body 125b to do work, thereby pushing the intake valve body 125b to move upward and open the through hole so that the through hole is connected to the connecting hole.

[0109] When the liquid heating container 100 is tipped over, the direction of the cover assembly 120 changes, and under the action of gravity, the air inlet valve body 125b moves toward the direction close to the steam channel 130 within the limitation of the limit space 125c, thereby blocking the steam connecting hole and reducing the possibility of water in the accommodating cavity 111 entering the steam channel 130 through the connecting hole, thereby achieving the purpose of preventing the liquid heating container 100 from tipping over.

[0110] Furthermore, the side wall of the limiting space 125c is provided with a guide surface 125d, which is inclined and gradually expanded along the direction close to the steam channel 130. Specifically, the guide surface 125d is inclined and gradually expanded along the direction close to the steam channel 130. If the liquid heating container 100 is tilted horizontally, the cover body assembly 120 is roughly vertically arranged at this time, and the guide surface 125d extends downward along the direction close to the steam channel 130, thereby providing a guide for the movement of the air intake valve body 125b in the direction of the steam channel 130, thereby blocking the steam channel 130, and therefore the guide surface 125d can guide the movement of the air intake valve body 125b.

[0111] Preferably, the limiting space 125c is configured in the shape of a truncated cone. Of course, in other embodiments, the intake valve body 125b may also be configured in the shape of a cone, a truncated cone or a cylinder.

[0112] Preferably, the air intake valve body 125b is configured as a sphere, so as to reduce the friction resistance between the air intake valve body 125b and the valve body bracket 125a. When the liquid heating container 100 is tipped over, it is convenient for the air intake valve body 125b to roll toward the connecting hole, thereby improving the anti-tipover effect of the liquid heating container 100.

[0113] In another embodiment, the air inlet valve body 125b is configured as a gravity structure rotatably installed under the steam channel 130, and the gravity structure includes a mounting ring and an anti-dumping portion arranged at an angle, and the mounting ring is rotatably installed in the connecting hole, the anti-dumping portion is arranged horizontally, and one end of the anti-dumping portion is provided with an air inlet section connected to the mounting ring, the air inlet section extends horizontally, and a gravity block is installed at the other end. When the liquid is poured, the gravity block drives the anti-dumping portion to rotate due to its own weight, so that the opening 141 of the air inlet section is set upward, and the liquid heating container 100 can be tilted arbitrarily, and the opening 141 of the air inlet section is set upward (that is, away from the direction of the liquid surface in the accommodating chamber 111), thereby achieving the purpose of preventing the liquid heating container 100 from dumping.

[0114] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A liquid heating container, characterized in that: include: The container body has a containing cavity; A cover assembly, the cover assembly can cover the accommodating cavity, and a steam channel is provided in the cover assembly; as well as A switch box is provided with a steam switch therein, and the switch box has an opening connected to the steam channel, so that the steam in the steam channel enters the switch box and triggers the steam switch.

2. The liquid heating container according to claim 1, characterized in that The cover assembly is also provided with a water outlet, and the steam channel includes an inlet channel and a main channel, one end of the inlet channel is connected to the accommodating cavity, and the other end is connected to the opening and the main channel, and the end of the main channel away from the opening is connected to the water outlet.

3. The liquid heating container according to claim 2, characterized in that The cover assembly includes a steam box and an air inlet pipe portion, the inlet channel is arranged at the air inlet pipe portion, the main channel is arranged at the steam box, and the air inlet pipe portion is arranged below the steam box, and the steam inlet of the steam box and the air inlet pipe portion are commonly connected to the opening.

4. The liquid heating container according to claim 2, characterized in that The inlet channel is arranged on a side of the cover assembly away from the water outlet.

5. The liquid heating container according to claim 2, characterized in that The steam channel also includes a steam outlet connected to the main channel, the steam outlet is connected to the water outlet, and the height of the steam outlet is lower than the height of the main channel.

6. The liquid heating container according to claim 5, characterized in that The cover assembly includes a steam box, the main channel is arranged in the steam box, the steam box is provided with a raised portion protruding toward the accommodating cavity, and the raised portion is arranged at one end of the main channel close to the water outlet, and the steam outlet is arranged on a side of the raised portion facing the accommodating cavity.

7. The liquid heating container according to claim 5, characterized in that The cover assembly is also provided with a water outlet channel, the water outlet is connected to the accommodating cavity through the water outlet channel, and a water outlet valve is provided on the side of the water outlet channel facing the accommodating cavity, and the steam outlet is connected to one end of the water outlet channel facing the accommodating cavity.

8. The liquid heating container according to claim 7, characterized in that A water outlet switch is provided on the top of the cover assembly, and the water outlet valve is provided at one end of the water outlet channel facing the accommodating cavity. The water outlet switch and the water outlet valve are elastically matched, and the water outlet valve body blocks the water outlet channel; The water outlet switch enables the water outlet valve body to open the water outlet flow channel.

9. The liquid heating container according to claim 8, characterized in that The water outlet switch has a pressing portion, the water outlet valve includes a water outlet valve body and an elastic member, the water outlet valve body includes a mounting portion and a blocking portion, the blocking portion blocks the edge of the water outlet flow channel toward one end of the accommodating cavity, a portion of the mounting portion passes through the water outlet flow channel and abuts against the pressing portion, the elastic member is sleeved on the mounting portion, and one end of the elastic member is connected to the upper side of the water outlet flow channel; The elastic member causes the blocking portion to have a tendency to move toward the water outlet flow channel to close the water outlet flow channel; the pressing portion pushes the blocking portion to move toward the accommodating cavity to open the water outlet flow channel; The steam outlet is communicated with the water outlet channel and is located above the blocking portion.

10. The liquid heating container according to claim 2, characterized in that The main channel has a weakening section, and the weakening section is used to weaken the impact strength of steam when it flows out of the main channel.

11. The liquid heating vessel according to claim 10, wherein: The cross-sectional area of ​​the weakened section is smaller than the cross-sectional area of ​​the remaining portion of the main channel; and / or, There are a plurality of weakening sections, and the plurality of weakening sections are arranged at intervals in the main channel.

12. The liquid heating vessel according to claim 11, characterized in that The cover assembly includes a steam box, and the main channel is arranged in the steam box; The steam box includes a first box part, a second box part and a weakening pipe section connecting the first box part and the second box part, the first box part is arranged close to the switch box, the second box part is arranged close to the water outlet, and the weakening section is arranged on the weakening pipe section.

13. The liquid heating vessel according to claim 12, wherein: Along the axial direction of the main channel, at least two of the plurality of flow areas of the first box portion are arranged differently; and / or, The first box portion has a plurality of first communicating sections arranged at intervals, and the plurality of first communicating sections are all connected to the opening and the second box portion; and / or, Along the axial direction of the main channel, at least two of the plurality of flow areas of the second box portion are arranged differently; and / or, The second box portion has a plurality of second communication sections arranged at intervals, and the plurality of second communication sections are all connected to the first box portion and the water outlet.

14. The liquid heating vessel of claim 1, wherein: The switch box is provided with a drain hole, and the container body is provided with a drain pipe connected to the outside, and the drain hole is connected to the drain pipe to discharge the steam in the switch box.

15. The liquid heating vessel of claim 14, wherein: The cross-sectional area of ​​the drainage hole is smaller than the cross-sectional area of ​​the drainage pipe; and / or, The steam switch is arranged toward the opening, and the drain hole is arranged on a side of the switch box close to the container body.

16. The liquid heating vessel of claim 14, wherein: The liquid heating container also includes a kettle handle assembly, the container body includes a shell and an inner liner arranged in the shell, the inner liner forms the accommodating cavity, and the drain pipe is arranged between the shell and the inner liner; and / or, the drain pipe is arranged in the kettle handle assembly and extends to the bottom of the liquid heating container.

17. The liquid heating vessel of claim 16, wherein: The switch box is arranged at one end of the kettle handle assembly facing the cover assembly, and the drainage hole is connected to the drainage pipe through a connecting pipe.

18. The liquid heating vessel of claim 1, wherein: An air inlet valve is installed at one end of the steam channel facing the accommodating chamber.

19. A liquid heating vessel as claimed in claim 18, characterised in that The air intake valve comprises a valve body support and an air intake valve body installed on the steam channel, the valve body support forms a limiting space, the air intake valve body is movably installed in the limiting space, and the limiting space limits the up and down movement of the air intake valve body, and the valve body support is provided with a through hole connecting the steam channel and the accommodating cavity; Under the action of gravity, the intake valve body moves downward to block the through hole, and under the action of steam, the intake valve body moves upward to open the through hole; When the liquid heating container is tilted, under the action of gravity, the air inlet valve body moves towards the direction close to the steam channel under the restriction of the limiting space to block the steam channel.

20. The liquid heating vessel of claim 19, wherein: The intake valve body is configured as a sphere; and / or, The side wall of the limiting space is provided with a guide surface, the guide surface is arranged at an inclination, and the limiting space is arranged to gradually expand along the direction approaching the steam channel.

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