Thermos bottle

Abstract

The vacuum bottle comprises a bottle body assembly, a pressure release valve and a bottle cap. The pressure release valve is at least partially inserted into a water outlet channel formed in the bottle body assembly, and the pressure release valve can control opening and closing of the water outlet channel. The bottle cap is arranged on the pressure relief valve, the pressure relief channel is formed between the bottle cap and the bottle body assembly, when the pressure in the liquid storage cavity is too large, the pressure relief valve is switched to be in an open state, gas is sequentially exhausted to the outside atmosphere from the liquid storage cavity, the water outlet channel, the pressure relief valve and the pressure relief channel, and pressure relief is achieved; the direction of the pressure relief channel is from the bottle cap to the bottle body assembly, gas sprayed out of the pressure relief channel is not prone to being sprayed to people, and a user is prevented from being hurt; and when the pressure in the liquid storage cavity is reduced, the pressure release valve is switched to a closed state. The bottle cap is in transmission connection with the pressure release valve, the pressure release valve is detachably connected, the bottle cap can be driven to move relative to the bottle body assembly so as to drive the pressure release valve to be detached from the water outlet channel, and liquid in the liquid storage cavity can be directly drunk through the water outlet channel.

Description

Technical Field

[0001] This application relates to the field of thermos bottle technology, and more particularly to a thermos bottle. Background Technology

[0002] A thermos flask is a device that uses technologies such as vacuum insulation, absorbent materials, and reflective materials to maintain a constant or prevent the temperature of a liquid from dropping. According to the gas law, when the amount and volume of gas are constant, the higher the temperature, the greater the pressure. Therefore, when a thermos flask is filled with hot water, the internal pressure will increase accordingly due to the higher internal temperature. Current thermos flasks have their openings pointing vertically upwards, requiring users to tilt the flask at a greater angle to drink. Furthermore, the pressure relief valve is located on the side of the thermos, which can cause a slow and delayed release of pressure, potentially resulting in gas spraying onto people during depressurization. Utility Model Content

[0003] Therefore, it is necessary to provide a thermos flask to address the above-mentioned problems.

[0004] This application provides a thermos flask, the thermos flask comprising:

[0005] A bottle assembly, wherein the bottle assembly is provided with a liquid storage chamber and a water outlet channel communicating with the liquid storage chamber;

[0006] A pressure relief valve, at least partially inserted into the water outlet channel, is detachably connected to the bottle assembly, and includes an open state and a closed state.

[0007] A bottle cap is disposed on the pressure relief valve and is throttle-connected to the pressure relief valve. A pressure relief channel is formed between the bottle cap and the bottle body assembly, facing the bottle body assembly.

[0008] When the pressure relief valve is in the open state, the liquid storage chamber, the water outlet channel, the pressure relief valve, the pressure relief channel and the external atmosphere are connected in sequence.

[0009] The thermos flask disclosed in this application includes a bottle body assembly, a pressure relief valve, and a bottle cap. The pressure relief valve is at least partially inserted into a water outlet channel formed on the bottle body assembly, and the pressure relief valve can control the opening and closing of the water outlet channel. The bottle cap is mounted on the pressure relief valve, and a pressure relief channel is formed between the bottle cap and the bottle body assembly. When the pressure in the liquid storage chamber is too high, the pressure relief valve switches to the open state, and gas is discharged sequentially from the liquid storage chamber, the water outlet channel, the pressure relief valve, and the pressure relief channel to the outside atmosphere, thereby achieving pressure relief. The direction of the pressure relief channel is from the bottle cap towards the bottle body assembly, so the gas sprayed from the pressure relief channel is unlikely to spray onto people, avoiding injury to users. When the pressure in the liquid storage chamber decreases, the pressure relief valve switches to the closed state. The bottle cap is driven to the pressure relief valve, and the pressure relief valve is detachable, which can drive the bottle cap to move relative to the bottle body assembly, thereby driving the pressure relief valve to be detached from the water outlet channel, making it convenient to drink the liquid in the liquid storage chamber directly through the water outlet channel.

[0010] In one embodiment, the pressure relief valve includes a valve seat, a piston, a spring, and a fixed seat. The valve seat is at least partially inserted into the water outlet channel and is detachably connected to the bottle assembly. An air guide channel is provided in the valve seat. The fixed seat is connected to the valve seat and a gap is formed between them. The piston is slidably disposed in the air guide channel. The two ends of the spring are respectively connected to the fixed seat and the piston. The piston is used to block the air inlet of the air guide channel.

[0011] The thermos bottle in the above embodiment further limits the ability of the piston spring to block the air inlet of the gas channel. When the pressure in the liquid storage chamber is greater than the force of the spring, the gas pressure overcomes the resistance of the spring, causing the piston to move away from the air inlet. At this time, the pressure relief valve is in the open state, thereby realizing pressure relief without manual operation, achieving passive pressure relief and avoiding safety problems caused by excessive pressure in the chamber. When the pressure in the liquid storage chamber gradually decreases, the piston resets under the force of the spring.

[0012] In one embodiment, the water outlet channel includes an inlet and an outlet, the diameter of the inlet being smaller than the diameter of the outlet, a first sealing ring is fitted on the valve seat, and the shape of the first sealing ring matches the shape of the inlet. The first sealing ring is used to seal the gap between the outlet and the outer wall of the valve seat, the diameter of the first sealing ring gradually increases from the inlet to the outlet, and the maximum diameter of the first sealing ring is smaller than the diameter of the outlet.

[0013] In the above embodiment, the thermos bottle further defines that the first sealing ring is sleeved on the end of the valve seat near the water inlet, and the shape of the first sealing ring matches the shape of the water inlet. The diameter of both gradually increases from the water inlet to the water outlet. The diameter of the water inlet through the water outlet channel is smaller than the diameter of the water outlet. When the first sealing ring moves away from the water inlet as the valve seat moves, the gas in the liquid storage chamber can enter the venting channel through the gap between the valve seat and the water outlet, thereby achieving active pressure relief.

[0014] In one embodiment, the valve seat and the bottle assembly are detachably connected by a threaded connection.

[0015] The thermos bottle in the above embodiment is further defined to be connected to the bottle body assembly by means of threads. The bottle cap is connected to the valve seat by transmission. When the bottle cap is driven to rotate relative to the bottle body assembly, the valve seat can be removed from the bottle body assembly. When the valve seat rotates with the bottle cap relative to the bottle body assembly, the first sealing ring on the valve seat gradually moves away from the water inlet of the water outlet channel, thereby realizing active pressure relief.

[0016] In one embodiment, the bottle assembly extends away from the liquid storage cavity to form a protruding drinking section, the drinking section is provided with the water outlet channel, the bottle cap is fitted onto the surface of the drinking section, and the gap between the inner wall of the bottle cap and the outer wall of the drinking section forms the pressure relief channel.

[0017] The thermos bottle in the above embodiment further defines the bottle body assembly extending away from the liquid storage cavity to form the drinking part, and the bottle cap is fitted around the drinking part. The narrow gap between the outer periphery of the drinking part and the bottle cap forms a pressure relief channel. The gas discharged from the pressure relief valve enters the pressure relief channel and then sprays out along the path of the pressure relief channel toward the liquid storage cavity. This not only avoids the gas being sprayed toward the human body, but also reduces the gas temperature and makes the pressure relief process more linear by extending the gas transmission path and the size of the output nozzle.

[0018] In one embodiment, the bottle assembly includes a water bottle body and an adapter, the adapter being detachably connected to the water bottle body and the pressure relief valve, and the adapter being provided with the drinking section.

[0019] The thermos flask in the above embodiment further specifies that the water bottle body is connected to the pressure relief valve via an adapter. The pressure relief valve can be detached from the adapter, and the user can drink directly through the drinking part on the adapter. At the same time, the adapter can be detached from the water bottle body, so that the adapter or the water bottle body can be cleaned independently, or the adapter can be replaced.

[0020] In one embodiment, the adapter is detachably connected to the water bottle body via a threaded connection.

[0021] In one embodiment, the bottle assembly further includes a connector that is connected to the adapter and the bottle cap to form a handle structure, and the bottle cap is rotatable relative to the connector.

[0022] The thermos bottle in the above embodiment further defines that the two ends of the connector are respectively connected to the adapter and the bottle cap to form a handle structure, which is convenient for carrying or hanging. In addition, when the bottle cap and the pressure relief valve are removed from the adapter, the bottle cap and the pressure relief valve are not easy to be lost because the bottle cap and the connector are connected.

[0023] In one embodiment, the water bottle body includes an inner liner and an outer shell, with a vacuum layer provided between the outer shell and the inner liner.

[0024] The thermos bottle in the above embodiment further specifies that there is an isolation layer between the outer shell and the inner liner. The isolation layer is vacuum-sealed, which makes the water bottle have a better heat preservation effect and makes it less likely for the temperature of the beverage inside the bottle to be transmitted to the hands and cause discomfort.

[0025] In one embodiment, the bottle assembly further includes a base connected to the bottom of the water bottle body, and the base is provided with an anti-slip sleeve.

[0026] In one embodiment, the central axis of the water outlet channel is designed to be inclined relative to the central axis of the liquid storage chamber.

[0027] The thermos bottle in the above embodiment further defines the central axis of the water outlet channel and the central axis of the liquid storage cavity as inclined. Based on the above design, the user does not need to tilt their head back and can drink water at a horizontal angle. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of a thermos flask in one embodiment;

[0029] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0030] Figure 3 This is an exploded view of a thermos flask in one embodiment.

[0031] Figure label:

[0032] 10 Bottle body assembly, 11 Water bottle body, 12 Adapter, 13 Connector, 14 Base, 15 Anti-slip sleeve, 111 Outer shell, 112 Inner liner, 121 Drinking part, 101 Liquid storage chamber, 102 Vacuum layer, 103 Water outlet channel, 104 Water inlet, 105 Water outlet.

[0033] 20 Pressure relief valve, 21 Valve seat, 22 Piston, 23 Spring, 24 Fixed seat, 25 First sealing ring, 211 Protrusion, 221 Valve core, 222 Second sealing ring, 201 Air guide channel;

[0034] 30 bottle caps, 301 pressure relief channel, 302 limiting groove. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate for the embodiments of this application described herein.

[0037] like Figures 1 to 3 As shown, this embodiment provides a thermos flask, which includes:

[0038] Bottle assembly 10, the bottle assembly 10 is provided with a liquid storage chamber 101 and a water outlet channel 103 communicating with the liquid storage chamber 101;

[0039] The pressure relief valve 20 is at least partially inserted into the water outlet channel 103. The pressure relief valve 20 is detachably connected to the bottle assembly 10. The pressure relief valve 20 includes an open state and a closed state.

[0040] Bottle cap 30 is mounted on pressure relief valve 20 and is connected to pressure relief valve 20 in a driving manner. A pressure relief channel 301 is formed between bottle cap 30 and bottle body assembly 10, which faces the direction of bottle body assembly 10.

[0041] When the pressure relief valve 20 is in the open state, the liquid storage chamber 101, the water outlet channel 103, the pressure relief valve 20, the pressure relief channel 301 and the external atmosphere are connected in sequence.

[0042] The thermos flask disclosed in this application includes a bottle body assembly 10, a pressure relief valve 20, and a bottle cap 30. The pressure relief valve 20 is at least partially inserted into a water outlet channel 103 formed on the bottle body assembly 10, and the pressure relief valve 20 can control the opening and closing of the water outlet channel 103. The bottle cap 30 is installed on the pressure relief valve 20, and a pressure relief channel 301 is formed between the bottle cap 30 and the bottle body assembly 10. When the pressure in the liquid storage chamber 101 is too high, the pressure relief valve 20 switches to the open state, and gas is discharged to the outside atmosphere in sequence from the liquid storage chamber 101, the water outlet channel 103, the pressure relief valve 20, and the pressure relief channel 301, thereby achieving pressure relief. The direction of the pressure relief channel 301 is from the bottle cap 30 towards the bottle body assembly 10, so the gas sprayed from the pressure relief channel 301 is unlikely to spray onto people, avoiding injury to users. When the pressure in the liquid storage chamber 101 decreases, the pressure relief valve 20 switches to the closed state. The bottle cap 30 is connected to the pressure relief valve 20 via a transmission connection. The pressure relief valve 20 is detachable and can drive the bottle cap 30 to move relative to the bottle body assembly 10, thereby causing the pressure relief valve 20 to be detached from the water outlet channel 103, so that the liquid in the liquid storage chamber 101 can be directly consumed through the water outlet channel 103.

[0043] The pressure relief valve 20 is used to control whether the water outlet channel 103 and the pressure relief channel 301 are connected. The pressure relief valve 20 has an open state and a closed state. Specifically, when the pressure in the liquid storage chamber 101 is greater than a certain value, the pressure relief valve 20 switches from the closed state to the open state, and the liquid storage chamber 101 is connected to the external atmosphere in sequence through the water outlet channel 103, the pressure relief valve 20 and the pressure relief channel 301, thereby realizing pressure relief; when the pressure in the liquid storage chamber 101 is lower than the external atmospheric pressure, the pressure relief valve 20 switches from the open state to the closed state, thereby closing the connection between the liquid storage chamber 101 and the external atmosphere.

[0044] In addition, the pressure relief valve 20 can be detachably connected to the bottle assembly 10 through threaded connection, snap-fit, pin or other means.

[0045] The bottle cap 30 forms a pressure relief channel 301 with the bottle body assembly 10. For example, the bottle cap 30 is fitted onto the end of the bottle body assembly 10 near the water outlet channel 103. The gap between the inner wall of the bottle cap 30 and the outer wall of the bottle body assembly 10 forms the aforementioned pressure relief channel 301, and the direction of the pressure relief channel 301 is from the top of the bottle cap 30 towards the bottom of the bottle cap 30. When the pressure relief valve 20 is open, the gas in the liquid storage chamber 101 enters the pressure relief channel 301 sequentially through the water outlet channel 103 and the inside of the pressure relief valve 20. The gas then sprays downwards along the path of the pressure relief channel 301, making it less likely to spray onto the user. Simultaneously, the gas from the larger liquid storage chamber 101 is discharged to the outside atmosphere sequentially through the narrow water outlet channel 103 and the pressure relief channel 301, making the pressure relief process of the thermos flask more linear.

[0046] Furthermore, since the bottle cap 30 is connected to the pressure relief valve 20 by transmission, the pressure relief valve 20 can be removed from the water outlet channel 103 by driving the bottle cap 30 to move relative to the bottle body assembly 10.

[0047] like Figures 1 to 3 As shown, in addition to the features of the above embodiments, this embodiment further defines: the pressure relief valve 20 includes a valve seat 21, a piston 22, a spring 23 and a fixed seat 24. The valve seat 21 is at least partially inserted into the water outlet channel 103 and is detachably connected to the bottle assembly 10. An air guide channel 201 is provided in the valve seat 21. The fixed seat 24 is connected to the valve seat 21 and a gap is formed between them. The piston 22 is slidably disposed in the air guide channel 201. The two ends of the spring 23 are respectively connected to the fixed seat 24 and the piston 22. The piston 22 is used to block the air inlet of the air guide channel 201.

[0048] In the above embodiment, the piston 22 is further defined to be able to block the air inlet of the air guide channel 201 under the action of the spring 23. When the pressure in the liquid storage chamber 101 is greater than the action of the spring 23, the gas pressure overcomes the resistance of the spring 23 and causes the piston 22 to move away from the air inlet of the air guide channel 201. At this time, the pressure relief valve 20 is in the open state, thereby realizing pressure relief without manual operation, realizing passive pressure relief, and avoiding safety problems caused by excessive pressure in the chamber. When the pressure in the liquid storage chamber 101 gradually decreases, the piston 22 is reset under the action of the spring 23.

[0049] Among them, piston 22 can be used to block the air inlet of air guide channel 201. Specifically, the fixed seat 24 is located at the outlet end of the air guide channel 201, and a gap is left between the fixed seat 24 and the outlet end of the air guide channel 201. The piston 22 can slide within the air guide channel 201 and form at least a first position and a second position. The two ends of the spring 23 are connected to the fixed seat 24 and the piston 22 respectively. When the pressure in the liquid storage chamber 101 is less than the force of the spring 23, the piston 22 is in the first position. Under the force of the spring 23, the piston 22 is pressed tightly against the air inlet of the air guide channel 201 to block the air inlet. When the pressure in the liquid storage chamber 101 is greater than the force of the spring 23, the gas pressure overcomes the force of the spring 23 and moves from the first position to the second position. The piston 22 moves away from the air inlet of the air guide channel 201, making the air guide channel 201 open. As the pressure in the liquid storage chamber 101 gradually decreases, the spring 23 resets the piston 22 to block the air inlet of the air guide channel 201.

[0050] It should be noted that in some embodiments, the piston 22 includes a valve core 221 and a second sealing ring 222. One end of the valve core 221 is connected to the spring 23, and the other end is connected to the second sealing ring 222. The second sealing ring 222 can seal the gap between the air inlet of the air guide channel 201 of the valve core 221.

[0051] like Figure 1 and Figure 2 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the water outlet channel 103 includes an inlet 104 and an outlet 105, the diameter of the inlet 104 is smaller than the diameter of the outlet 105, a first sealing ring 25 is sleeved on the valve seat 21, and the shape of the first sealing ring 25 matches the shape of the inlet 104. The first sealing ring 25 is used to seal the gap between the outlet 105 and the outer wall of the valve seat 21. The diameter of the first sealing ring 25 gradually increases from the inlet 104 to the outlet 105, and the maximum diameter of the first sealing ring 25 is smaller than the diameter of the outlet 105.

[0052] In the above embodiment, the first sealing ring 25 is further defined as being sleeved on the end of the valve seat 21 near the inlet 104, and the shape of the first sealing ring 25 matches the shape of the inlet 104. The diameter of both gradually increases from the inlet 104 to the outlet 105. The diameter of the inlet 104 through the outlet channel 103 is smaller than the diameter of the outlet 105. When the first sealing ring 25 moves away from the inlet 104 with the valve seat 21, the gas in the liquid storage chamber 101 can enter the venting channel through the gap between the valve seat 21 and the outlet 105, thereby achieving active pressure relief.

[0053] In addition to the features of the above embodiments, this embodiment further specifies that the valve seat 21 and the bottle assembly 10 are detachably connected by a threaded connection.

[0054] In the above embodiment, the valve seat 21 is further specified to be connected to the bottle body assembly 10 by means of threads, and the valve seat 21 is connected to the bottle cap 30 through transmission. When the bottle cap 30 is driven to rotate relative to the bottle body assembly 10, the valve seat 21 can be removed from the bottle body assembly 10. When the valve seat 21 rotates with the bottle cap 30 relative to the bottle body assembly 10, the first sealing ring 25 on the valve seat 21 gradually moves away from the water inlet 104 of the water outlet channel 103, thereby realizing active pressure relief.

[0055] In this device, one of the bottle cap 30 and the valve seat 21 has a limiting groove 302, and the other has a protrusion 211. The bottle cap 30 and the valve seat 21 are connected by the locking of the limiting groove 302 and the protrusion 211.

[0056] like Figures 1 to 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the bottle assembly 10 extends in a direction away from the liquid storage cavity 101 to form a protruding drinking part 121, the drinking part 121 is provided with a water outlet channel 103, the bottle cap 30 is sleeved on the surface of the drinking part 121, and a pressure relief channel 301 is formed in the gap between the inner wall of the bottle cap 30 and the outer wall of the drinking part 121.

[0057] In the above embodiment, the bottle assembly 10 extends in a direction away from the liquid storage chamber 101 to form the drinking part 121, and the bottle cap 30 is sleeved on the periphery of the drinking part 121. The narrow gap between the periphery of the drinking part 121 and the bottle cap 30 forms a pressure relief channel 301. The gas discharged from the pressure relief valve 20 enters the pressure relief channel 301 and then sprays out along the path of the pressure relief channel 301 toward the liquid storage chamber 101. This not only avoids the gas being sprayed toward the human body, but also reduces the gas temperature and makes the pressure relief process more linear by extending the gas transmission path and the size of the output nozzle.

[0058] like Figures 1 to 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the bottle assembly 10 includes a water bottle body 11 and an adapter 12, the adapter 12 is detachably connected to the water bottle body 11 and the pressure relief valve 20 respectively, and the adapter 12 is provided with a drinking part 121.

[0059] In the above embodiment, the water bottle body 11 is further defined to be connected to the pressure relief valve 20 via the adapter 12. The pressure relief valve 20 can be detached from the adapter 12, and the user can directly drink through the drinking part 121 on the adapter 12. At the same time, the adapter 12 can be detached from the water bottle body 11, so that the adapter 12 or the water bottle body 11 can be cleaned independently, or the adapter 12 can be replaced.

[0060] In addition to the features of the above embodiments, this embodiment further specifies that the adapter 12 and the water bottle body 11 are detachably connected by a threaded connection.

[0061] like Figures 1 to 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the bottle assembly 10 also includes a connector 13, which is connected to the adapter 12 and the bottle cap 30 respectively to form a handle structure, and the bottle cap 30 can rotate relative to the connector 13.

[0062] In the above embodiment, the two ends of the connector 13 are connected to the adapter 12 and the bottle cap 30 respectively to form a handle structure, which is convenient for carrying or hanging. In addition, when the bottle cap 30 and the pressure relief valve 20 are removed from the adapter 12, the bottle cap 30 and the pressure relief valve 20 are not easy to be lost because the bottle cap 30 and the connector 13 are connected.

[0063] The connector 13 can be made of a soft material. Specifically, the water bottle body 11 and the bottle cap 30 are provided with annular grooves, and the two ends of the connector 13 are respectively fitted into the annular grooves on the water bottle body 11 and the bottle cap 30, and the connector 13 can rotate within the annular grooves.

[0064] like Figure 1 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the water bottle body 11 includes an inner liner 112 and an outer shell 111, and a vacuum layer 102 is provided between the outer shell 111 and the inner liner 112.

[0065] The outer shell 111 and the inner liner 112 are separated by an isolation layer. The isolation layer is vacuum-sealed, which makes the water bottle more heat-insulating and the temperature of the beverage inside the bottle less likely to be transmitted to the hands and cause discomfort.

[0066] like Figure 1 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the bottle assembly 10 also includes a base 14, the base 14 is connected to the bottom of the water bottle body 11, and an anti-slip sleeve 15 is provided on the base 14.

[0067] like Figure 1 and Figure 2 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the central axis of the water outlet channel 103 is designed to be inclined relative to the central axis of the liquid storage chamber 101.

[0068] In the above embodiments, the central axis of the water outlet channel 103 is further designed to be inclined to the central axis of the liquid storage chamber 101. Based on the above design, the user can drink water at a horizontal angle without having to tilt their head back.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A thermos bottle characterized by, The utility model provides a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10). The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10). The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10). The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10). The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10).

2. The thermos flask according to claim 1, characterized in that The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10).

3. The thermos flask according to claim 2, characterized in that The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10).

4. The thermos flask according to claim 3, characterized in that The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10).

5. A vacuum flask as claimed in any one of claims 1 to 4, wherein, The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10). The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10). The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10). The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) and water outlet channel (103) of communication with liquid storage cavity (101), pressure relief valve (20) is inserted into water outlet channel (103) at least partially, pressure relief valve (20) is detachably connected with bottle body assembly (10), and pressure relief valve (20) includes open state and closed state, bottle cap (30) is arranged on pressure relief valve (20), bottle cap (30) is drivingly connected with pressure relief valve (20), and the gap of the inner wall of bottle cap (30) and the outer wall of drinking water part (121) forms pressure relief channel (301) towards bottle body assembly (10) direction between bottle cap (30) and bottle body assembly (10). The utility model discloses a bottle body assembly (10) is provided with liquid storage cavity (101) 6. The thermos flask according to claim 5, characterized in that The bottle body assembly (10) comprises a water bottle body (11) and an adapter (12), the adapter (12) is detachably connected with the water bottle body (11) and the pressure relief valve (20) respectively, and the drinking water part (121) is arranged on the adapter (12).

7. The thermos flask according to claim 6, characterized in that The adapter (12) and the water bottle body (11) are detachably connected in a threaded connection mode.

8. The thermos flask according to claim 6, characterized in that The bottle body assembly (10) further comprises a connecting piece (13), the connecting piece (13) is connected with the adapter (12) and the bottle cap (30) respectively and forms a handle structure, and the bottle cap (30) can rotate relative to the connecting piece (13).

9. The thermos bottle according to claim 6, characterized in that, The water bottle body (11) comprises an inner container (112) and an outer shell (111), and a vacuum layer (102) is arranged between the outer shell (111) and the inner container (112). And / or, The bottle body assembly (10) further comprises a base (14), the base (14) is connected with the bottom of the water bottle body (11), and an anti-skid sleeve (15) is arranged on the base (14).

10. The thermos flask according to claim 6, characterized in that The central axis of the water outlet channel (103) is designed to be inclined relative to the central axis of the liquid storage cavity (101).

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