CN211459809U - electric hot water cup - Google Patents

Abstract

The utility model relates to an electric heat drinking cup technical field provides an electric heat drinking cup, and this electric heat drinking cup includes cup, lid and relief valve, and the lid can be dismantled the lid and fit the cup, and the relief valve sets up in the lid, is used for balancing the atmospheric pressure of cup and external environment. The pressure relief valve comprises a valve body, a first sealing assembly and a second sealing assembly; the valve body comprises an air inlet, an air outlet, a first air guide channel and a second air guide channel, wherein the first air guide channel and the second air guide channel are respectively communicated with the air inlet and the air outlet; the first sealing assembly is arranged on and seals the first air guide channel, and the second sealing assembly is arranged on and seals the second air guide channel; when the pressure of the air inlet is higher than that of the air outlet, the first sealing assembly can open the first air guide channel under the action of pressure difference; when the pressure of the exhaust port is greater than that of the air inlet port, the second sealing assembly can open the second air guide passage under the action of the pressure difference. The electric heating water cup can automatically perform two functions of air exhaust, pressure relief and air inlet pressure stabilization, and has the advantages of simple structure and multiple functions.

Description

electric hot water cup

technical field

The present application relates to the technical field of electric hot water cups, in particular to an electric hot water cup.

Background technique

The electric hot water cup is a common boiling water container in our daily life. It is widely used in business trips and travel due to its advantages of convenient and fast boiling water and hygienic use.

In order to ensure that when the electric hot water cup is boiling or storing water, the internal pressure of the cup body can maintain a safe pressure difference with the external pressure. Generally, two pressure relief channels are set in the electric hot water cup, and each pressure relief channel is set correspondingly to a positive pressure. Balance valve and negative pressure balance valve, when the internal pressure of the cup body is greater than the external pressure, the positive pressure balance valve is turned on to balance the air pressure inside the cup body and the external environment; when the internal pressure of the cup body is less than the external pressure, the negative pressure The balance valve is turned on and works to balance the air pressure inside and outside the cup body.

However, in the prior art, the electric hot water cup is provided with two pressure relief channels and two pressure relief valves, which has the problem of a relatively complicated structure.

Utility model content

In view of this, the present application provides an electric hot water cup, which is used to solve the problem that the structure of the electric hot water cup in the prior art is relatively complicated in the pressure relief and exhaust method using two pressure relief channels and two pressure relief valves.

The electric hot water cup provided by this application includes a cup body, a cover body and a pressure relief valve;

The cover body is detachably covered with the cup body;

The pressure relief valve is arranged on the cover body for balancing the air pressure of the cup body and the external environment;

Wherein, the pressure relief valve includes a valve body, a first sealing component and a second sealing component;

The valve body of the pressure relief valve includes an intake port, an exhaust port, and a first air guide channel and a second air guide channel respectively connecting the intake port and the exhaust port;

the first sealing component is disposed in the first air guide and seals the first air guide;

the second sealing component is disposed in the second air passage and seals the second air passage;

When the pressure of the intake port is greater than the pressure of the exhaust port, the first sealing component can open the first air guide under the action of the pressure difference;

When the pressure of the exhaust port is greater than the pressure of the intake port, the second sealing assembly can open the second air passage under the action of the pressure difference.

In a possible design, the first sealing assembly includes:

a first piston, movably arranged in the first air guide;

a first seal, sleeved on the first piston;

a first elastic member, one end is connected with the first piston, and the other end is connected with the valve body, and is used for applying elastic force to the first piston always toward the air inlet;

Wherein, under the action of the first elastic member, the first piston is in sealing contact with the end of the first air guide channel facing the air inlet through the first sealing member;

When the pressure of the intake port is greater than the pressure of the exhaust port, the pressure difference drives the first piston to move toward the exhaust port against the elastic force of the first elastic member, so as to open the first air guide.

In a possible design, the inner peripheral wall of the end of the first air guide channel facing the air inlet is provided with a first convex portion, and the first convex portion is used to abut against the first sealing member connected to block the first airway.

In a possible design, the second sealing assembly includes:

a second piston, movably arranged in the second air guide;

a second seal, sleeved on the second piston;

a second elastic member, one end is connected with the second piston, and the other end is connected with the valve body, and is used for applying elastic force to the second piston always toward the exhaust port;

Wherein, under the action of the second elastic member, the second piston is in sealing contact with the end of the second air guide channel facing the exhaust port through the second sealing member;

When the pressure of the exhaust port is greater than the pressure of the intake port, the pressure difference drives the second piston to move toward the intake port against the elastic force of the second elastic member, so as to open the second air guide.

In a possible design, the inner peripheral wall of the end of the second air guide channel facing the exhaust port is provided with a second convex portion, and the second convex portion is used to abut against the second sealing member connected to block the second airway.

In a possible design, the valve body includes a valve body upper cover and a valve body lower cover, and the valve body upper cover is detachably covered with the valve body lower cover;

The upper cover of the valve body is provided with the exhaust port, and the lower cover of the valve body is provided with the air inlet.

In a possible design, the valve body further includes a valve body body, the valve body body is installed in the installation cavity formed by the valve body upper cover and the valve body lower cover, and the valve body body is respectively opened There are the first airway and the second airway.

In a possible design, a first sealing ring and a second sealing ring are respectively provided on the outer peripheral wall of the valve body;

When the valve body body is installed in the installation cavity, the valve body body is sealedly connected to the valve body upper cover and the valve body lower cover through the first sealing ring and the second sealing ring, respectively.

In a possible design, the cover body includes a mounting cover and an upper cover;

The mounting cover is used for detachably mounting the cover body on the cup body;

The upper cover is detachably covered with the installation cover, and the installation cover forms an installation space for installing the pressure relief valve;

Wherein, when the cover body is closed on the cup body, the air inlet is in communication with the inner cavity of the cup body, and the exhaust port is in communication with the external environment.

In a possible design, the bottom of the mounting cover is provided with a through hole for connecting the inner cavity of the cup body with the air inlet, and the side of the mounting cover is provided with a through hole for connecting the inner cavity of the cup body to the air inlet. A through hole through which the exhaust port communicates with the external environment.

In conjunction with the above technical solutions, the beneficial effects of the application are analyzed as follows:

The electric hot water cup provided by the present application includes a cup body, a cover body and a pressure relief valve, the cover body is detachably covered on the cup body, and the pressure relief valve is arranged on the cover body for balancing the air pressure between the cup body and the external environment. Wherein, the pressure relief valve includes a valve body, a first sealing assembly and a second sealing assembly; the valve body includes an air inlet, an exhaust port, and a first air guide channel and a second air guide channel respectively conducting the air inlet and the exhaust port. an air guide; the first sealing component is arranged on the first air guide and seals the first air guide; the second seal component is arranged on the second air guide and seals the second air guide; the pressure of the air inlet is greater than When the pressure of the exhaust port is high, the first sealing assembly can open the first air passage under the action of the pressure difference; when the pressure of the exhaust port is greater than the pressure of the intake port, the second sealing assembly can be opened under the action of the pressure difference Second airway.

When the electric hot water cup is in use, when the pressure in the electric hot water cup and the external pressure are within a certain safety threshold, the first air passage and the second air passage in the pressure relief valve are normally sealed, so that the electric hot water cup can be normal. Sealed water storage; when the pressure in the electric hot water cup exceeds a certain value of the external pressure, the first sealing component can open the first air passage under the action of the pressure difference, so as to realize the exhaust pressure relief of the electric hot water cup, and the exhaust pressure relief After stabilization, the first sealing component seals the first air passage again, so that the electric hot water cup can safely store water; when the external pressure exceeds a certain value of the pressure in the electric hot water cup, the second sealing component can be opened under the action of the pressure difference The second air guide channel realizes the stable air intake of the electric hot water cup, and after the air intake voltage is stabilized, the second sealing component seals the second air guide channel again, so as to facilitate the opening of the cover body from the cup body.

The electric hot water cup provided by the present application can automatically perform two functions of exhaust pressure relief and intake air pressure regulation according to the difference in pressure between the cup body and the external environment, and has the advantages of simple structure and diverse functions.

Additional features and advantages of the embodiments of the present application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the present application. The objectives and other advantages of the embodiments of the present application will be realized and attained by the structure particularly pointed out in the description and drawings.

Description of drawings

1 is a cross-sectional view of a pressure relief valve in an electric hot water cup provided in an embodiment of the present application in a state of exhaust and pressure relief;

2 is a cross-sectional view of a pressure relief valve in an electric hot water cup provided in an embodiment of the present application in an air intake voltage stabilization state;

3 is an exploded view of a pressure relief valve in an electric hot water cup provided by an embodiment of the application;

FIG. 4 is a cross-sectional view of an electric hot water cup provided by an embodiment of the present application.

Reference number:

1- valve body;

11 - air inlet;

12- exhaust port;

13- The first airway;

131 - the first raised part;

14- The second airway;

141 - the second raised part;

15-The upper cover of the valve body;

16- valve body lower cover;

17- valve body;

171 - the first sealing ring;

172-Second sealing ring;

2- the first sealing assembly;

21 - the first piston;

22 - the first seal;

23 - the first elastic piece;

3-Second sealing assembly;

31 - the second piston;

32 - the second seal;

33 - the second elastic piece;

4- cover body;

41 - upper cover;

42 - installation cover;

5 - cup body.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application.

Detailed ways

In order to better understand the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be clear that the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the embodiments of this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" used in this document is only an association relationship to describe associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist simultaneously. B, there are three cases of B alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

It should be noted that the directional words such as "up", "down", "left", and "right" described in the embodiments of the present application are described from the angles shown in the drawings, and should not be construed as implementing the present application. Example limitation. Also, in this context, it should also be understood that when an element is referred to as being "on" or "under" another element, it can not only be directly connected "on" or "under" the other element, but also Indirectly connected "on" or "under" another element through intervening elements.

Specific embodiments of the electric hot water cup provided by the embodiments of the present application will be described below according to the structure.

1 is a cross-sectional view of a pressure relief valve in an electric hot water cup provided by an embodiment of the application in an exhaust pressure relief state; FIG. 2 is a cross-sectional view of the pressure relief valve in an electric hot water cup provided by an embodiment of the application in an air intake voltage-stabilizing state; FIG. 3 is an exploded view of the pressure relief valve in the electric hot water cup provided by the embodiment of the application; FIG. 4 is a cross-sectional view of the electric hot water cup provided by the embodiment of the application.

As shown in FIGS. 1 to 4 , an embodiment of the present application provides an electric hot water cup, the electric hot water cup includes a cup body 5 , a cover body 4 and a pressure relief valve. The valve is arranged on the cover body 4 for balancing the air pressure between the cup body 5 and the external environment.

The pressure relief valve includes a valve body 1 , a first sealing assembly 2 and a second sealing assembly 3 , and the valve body 1 includes an air inlet 11 , an exhaust port 12 and a connection between the air inlet 11 and the exhaust port 12 respectively. The first air guide 13 and the second air guide 14; the first sealing component 2 is arranged in the first air guide 13 and seals the first air guide 13; the second sealing component 3 is arranged on the second air guide 14 , and seal the second air guide 14; when the pressure of the air inlet 11 is greater than the pressure of the exhaust port 12, the first sealing assembly 2 can open the first air guide 13 under the action of the pressure difference; When the pressure is greater than the pressure of the air inlet 11, the second sealing assembly 3 can open the second air passage 14 under the action of the pressure difference.

When the electric hot water cup is in use, when the pressure in the electric hot water cup and the external pressure are within a certain safety threshold, the first air passage 13 and the second air passage 14 in the pressure relief valve are normally sealed, so that the electric heating The water cup is normally sealed for water storage; when the pressure in the electric hot water cup exceeds a certain value of the external pressure, the first sealing component 2 can open the first air guide 13 under the action of the pressure difference, so as to realize the exhaust pressure of the electric hot water cup, and After the exhaust pressure is stabilized, the first sealing component 2 seals the first air passage 13 again, so that the electric hot water cup can safely store water; when the external pressure exceeds a certain value of the pressure in the electric hot water cup, the second sealing component 4 can Under the action of the pressure difference, the second air guide 14 is opened to realize the constant pressure of the air intake of the electric hot water cup, and after the constant pressure of the intake air, the second sealing component 4 seals the second air guide 14 again, which is convenient for the cover body to be removed from the cup. body open.

The electric hot water cup provided by the present application can automatically perform two functions of exhaust pressure relief and intake air pressure regulation according to the difference in pressure between the cup body and the external environment, and has the advantages of simple structure and diverse functions.

In the optional solution of this embodiment, the first sealing assembly 2 includes a first piston 21, a first sealing member 22 and a first elastic member 23; the first piston 21 is movably arranged in the first air passage 13; the first sealing member 22 is sleeved on the first piston 21; one end of the first elastic member 23 is connected with the first piston 21, and the other end is connected with the valve body 1, so as to apply the elastic force always towards the air inlet 11 to the first piston 21; Under the action of an elastic member 23, the first piston 21 is sealed against the end of the first air guide 13 facing the air inlet 11 through the first sealing member 22; the pressure of the air inlet 11 is greater than the pressure of the exhaust port 12 When the pressure difference drives the first piston 21 to move toward the exhaust port 12 against the elastic force of the first elastic member 23 to open the first air passage 13 .

Specifically, as shown in FIG. 1 , the first elastic member 23 may preferably be configured as a compression spring, the first sealing member 22 may be preferably configured as a rubber sealing ring, and the first piston 21 drives the rubber sealing ring under the elastic force of the compression spring. The end portion of the first air guide 13 facing the air inlet 11 is sealed and abutted, so that the first air guide 13 is in a normally closed state. When the pressure of the intake port 11 is greater than the pressure of the exhaust port 12, the force of the pressure difference acting on the first piston 21 is opposite to the elastic force of the compression spring. When the pressure difference is greater than a certain threshold, the pressure difference generated When the force is greater than the elastic force of the compression spring, the first piston 21 can move toward the exhaust port 12 against the elastic force of the first elastic member 23 to open the first air guide 13 .

By setting the first sealing assembly 2 to the above-mentioned structure, the automatic exhaust and pressure relief of the pressure relief valve can be realized without the need of electric control elements and detection elements, which has the advantages of simple structure and convenient use.

In the optional solution of this embodiment, the inner peripheral wall of the end of the first air guide 13 facing the air inlet 11 is provided with a first raised portion 131 , and the first raised portion 131 is used for abutting with the first sealing member 22 . to block the first airway 13 .

Specifically, as shown in FIG. 1 , the inner peripheral wall of the end of the first air guide 13 facing the air inlet 11 is provided with a first raised portion 131 , and the first raised portion 131 can direct the first air guide 13 toward the inlet. The end of the air port 11 forms a constricted structure, which is in contact with the first sealing member 22 to block the first air guide 13 . The structure is simple and can improve the sealing performance of the first sealing member 22 to the first air guide 13 In addition, the first protruding portion 131 can also play a role of guiding and limiting the position of the first piston 21 .

Of course, the end face of the first air guide 13 facing the air inlet 11 can also be provided with a constricted edge, and the constricted edge is in contact with the first sealing member 22, which can also improve the effect of the first sealing member 22 on the first sealing member 22. Advantages of the sealing effect of the air duct 13 .

In the optional solution of this embodiment, the second sealing assembly 3 includes a second piston 31, a second sealing member 32 and a second elastic member 33; the second piston 31 is movably arranged in the second air passage 14; the second sealing member 32 is sleeved on the second piston 31; one end of the second elastic member 33 is connected with the second piston 31, and the other end is connected with the valve body 1, so as to apply the elastic force always toward the exhaust port 12 to the second piston 31; Under the action of the two elastic members 33 , the second piston 31 is sealed against the end of the second air passage 14 facing the exhaust port 12 through the second sealing member 32 ; the pressure of the exhaust port 12 is greater than the pressure of the intake port 11 . When the pressure difference drives the second piston 31 to move toward the air inlet 11 against the elastic force of the second elastic member 33 to open the second air guide 14 .

Specifically, as shown in FIG. 2 , the second elastic member 33 can also be preferably configured as a compression spring, the second sealing member 32 can also be preferably configured as a rubber sealing ring, and the second piston 31 drives the rubber under the elastic force of the compression spring. The sealing ring is in sealing contact with the end of the second air guide 14 facing the exhaust port 12 , so that the second air guide 14 is in a normally closed state. When the pressure of the exhaust port 12 is greater than the pressure of the intake port 11, the force of the pressure difference acting on the second piston 31 is opposite to the elastic force of the compression spring. When the pressure difference is greater than a certain threshold, the pressure difference generated When the force is greater than the elastic force of the compression spring, the second piston 31 can overcome the elastic force of the second elastic member 33 to move toward the air inlet 11 and open the second air guide 14 .

By setting the second sealing assembly 3 to the above-mentioned structure, the automatic exhaust and pressure relief of the pressure relief valve can be realized without the need of electric control elements and detection elements, which also has the advantages of simple structure and convenient use.

It is also worth noting that since the elastic forces of the first elastic member 23 and the second elastic member 33 acting on the first piston 21 and the second piston 31 respectively are opposite, and the first piston 21 and the second piston 31 are in the relief valve row The pressure surface of the air pressure relief or the pressure difference of the intake air pressure is also opposite, so that, when the pressure relief valve is exhausted, the first sealing component 2 will open the first air guide 13, and the second The sealing assembly 3 will further seal the second air passage 14. When the air intake of the pressure relief valve is regulated, the second sealing assembly 3 will open the second air passage 14, and the first sealing assembly 2 will further seal the first air passage. Airway 13. Such ingenious structural design enables the pressure relief valve to realize two functions of exhaust pressure relief and intake air pressure regulation.

In the optional solution of this embodiment, the inner peripheral wall of the end of the second air guide 14 facing the exhaust port 12 is provided with a second raised portion 141 , and the second raised portion 141 is used for abutting with the second sealing member 32 . to block the second airway 14 .

Specifically, as shown in FIG. 2 , for the same reason, the inner peripheral wall of the end of the second air guide 14 facing the exhaust port 12 is provided with a second raised portion 141 , and the second raised portion 141 can connect the second air guide The end of 14 facing the exhaust port 12 forms a constricted structure, which cooperates with the second sealing member 32 to abut and block the second air guide 14 , and has a simple structure and can improve the effect of the second sealing member 32 on the second air guide 14 In addition, the second protruding portion 141 can also play the role of guiding and limiting the position of the second piston 31 .

In the optional solution of this embodiment, the valve body 1 includes a valve body upper cover 15 and a valve body lower cover 16, and the valve body upper cover 15 is detachably covered with the valve body lower cover 16; the valve body upper cover 15 is provided with a discharge The air port 12 and the lower cover 16 of the valve body are provided with an air inlet 11 .

Specifically, as shown in FIG. 1 to FIG. 3 , the upper cover 15 of the valve body and the lower cover 16 of the valve body can be respectively provided with snap joints, and the two can be snap-fitted to each other through the snap joints. The valve body 1 is set as the valve body upper cover 15 and the valve body lower cover 16 which are detachably connected, so that the molding die can be simplified, and the valve body 1 can be easily made by injection molding. When one of them is damaged, it can be disassembled and replaced without affecting the normal use of the other.

In the optional solution of this embodiment, the valve body 1 further includes a valve body body 17, the valve body body 17 is installed in the installation cavity formed by the valve body upper cover 15 and the valve body lower cover 16, and the valve body body 17 is respectively provided with The first airway 13 and the second airway 14 .

Specifically, as shown in FIG. 1 to FIG. 3 , the valve body 17 may be specifically configured as a columnar structure, and the first air guide 13 and the second air guide 14 are opened along the axial direction thereof. The valve body 17 is set separately and installed in the installation cavity formed by the upper cover 15 of the valve body and the lower cover 16 of the valve body. This structural design can also simplify the molding die of the valve body 1, and the valve body 17 can be injection-molded separately. Then, it is installed into the installation cavity formed by the upper cover 15 of the valve body and the lower cover 16 of the valve body.

In the optional solution of this embodiment, the outer peripheral wall of the valve body 17 is provided with a first sealing ring 171 and a second sealing ring 172 respectively; when the valve body 17 is installed in the installation cavity, the valve body 17 passes through the first The sealing ring 171 and the second sealing ring 172 are in sealing connection with the upper cover 15 of the valve body and the lower cover 16 of the valve body.

Specifically, as shown in FIGS. 1 to 3 , the first sealing ring 171 and the second sealing ring 172 can be specifically configured as rubber sealing rings sleeved on the outer peripheral wall of the valve body 17 , so that the valve body 17 can pass through the first sealing ring. The sealing ring 171 and the second sealing ring 172 are sealed with the valve body upper cover 15 and the valve body lower cover 16 respectively to prevent the gas in the valve body from leaking at the clamping joint of the valve body upper cover 15 and the valve body lower cover 16 .

When heated, the above-mentioned first sealing ring 171 and second sealing ring 172 can also be respectively disposed on the end faces of both ends of the valve body 17, and the valve body 17 is installed to the valve body upper cover 15 and the valve body lower cover 16 to form When the installation cavity is installed, the two ends of the valve body 17 are in sealing contact with the valve body upper cover 15 and the valve body lower cover 16 through the first sealing ring 171 and the second sealing ring 172 respectively, which can also achieve the above-mentioned anti-leakage function. .

In the optional solution of this embodiment, the cover body 4 includes an installation cover 42 and an upper cover 41. The installation cover 42 is used to detachably install the cover body 4 on the cup body 5; the upper cover 41 is detachably covered with the installation cover 42 and The installation cover 42 forms an installation space for installing the pressure relief valve; wherein, when the cover body 4 is covered with the cup body 5, the air inlet 11 is connected with the inner cavity of the cup body 5, and the exhaust port 12 is connected with the external environment .

Specifically, as shown in FIG. 4 , the cover body 4 is provided with a mounting cover 42 and an upper cover 41 detachably covered with the mounting cover 42 , which can simplify the molding and manufacturing mold of the cover body 4 , and the upper cover 41 can be detachably covered with the upper cover 41 . The installation cover 42 can facilitate installation, maintenance and cleaning of the pressure relief valve.

In the optional solution of this embodiment, the bottom of the mounting cover 42 is provided with a through hole for connecting the inner cavity of the cup body 5 with the air inlet 11 , and the side of the mounting cover 42 is provided with a through hole for connecting the exhaust port 12 with the air inlet 11 . Vias for external environment conduction.

Specifically, as shown in FIG. 4 , the bottom of the mounting cover 42 is provided with a through hole for connecting the inner cavity of the cup body 5 with the air inlet 11 , and the side of the mounting cover 42 is provided with a through hole for connecting the exhaust port 12 Vias that communicate with the external environment. With such a structure, when the pressure relief valve performs exhaust pressure relief or intake air pressure stabilization, the gas is discharged or entered from the side of the installation cover 42 , which can prevent dust and impurities from falling into the upper cover 41 without affecting the upper cover 41 . of aesthetics.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the present application. within the scope of protection.

Claims (10)

1. An electric heating cup, which is characterized by comprising:

a cup body (5);

the cover body (4) is detachably covered on the cup body (5);

the pressure release valve is arranged on the cover body (4) and is used for balancing the air pressure between the cup body (5) and the external environment;

wherein, the relief valve includes:

the valve body (1), the valve body (1) includes an air inlet (11), an air outlet (12) and a first air guide channel (13) and a second air guide channel (14) which respectively conduct the air inlet (11) and the air outlet (12);

the first sealing assembly (2) is arranged on the first air guide channel (13) and seals the first air guide channel (13);

the second sealing assembly (3) is arranged on the second air guide channel (14) and seals the second air guide channel (14);

when the pressure of the air inlet (11) is higher than that of the air outlet (12), the first sealing assembly (2) can open the first air guide channel (13) under the action of pressure difference;

when the pressure of the exhaust port (12) is greater than the pressure of the air inlet (11), the second sealing assembly (3) can open the second air guide passage (14) under the action of pressure difference.

2. The electric hot water cup according to claim 1, characterized in that the first sealing assembly (2) comprises:

the first piston (21) is movably arranged on the first air guide channel (13);

a first sealing element (22) sleeved on the first piston (21);

a first elastic member (23) having one end connected to the first piston (21) and the other end connected to the valve body (1) and configured to apply an elastic force to the first piston (21) always toward the intake port (11);

wherein under the action of the first elastic member (23), the first piston (21) is in sealing contact with the end part of the first air guide channel (13) facing the air inlet (11) through the first sealing member (22);

when the pressure of the air inlet (11) is larger than that of the air outlet (12), the pressure difference drives the first piston (21) to move towards the air outlet (12) by overcoming the elastic force of the first elastic piece (23) so as to open the first air guide channel (13).

3. The electric cup according to claim 2, characterized in that the first air duct (13) is provided with a first protrusion (131) on the inner peripheral wall of the end portion facing the air inlet (11), and the first protrusion (131) is used for abutting against the first sealing member (22) to seal off the first air duct (13).

4. The electric hot water cup according to claim 1, characterized in that the second sealing assembly (3) comprises:

the second piston (31) is movably arranged on the second air guide channel (14);

a second sealing member (32) sleeved on the second piston (31);

a second elastic member (33) having one end connected to the second piston (31) and the other end connected to the valve body (1) and configured to apply an elastic force to the second piston (31) always toward the exhaust port (12);

wherein, under the action of the second elastic member (33), the second piston (31) is in sealing contact with the end part of the second air guide channel (14) facing the exhaust port (12) through the second sealing member (32);

when the pressure of the exhaust port (12) is greater than the pressure of the air inlet (11), the pressure difference drives the second piston (31) to move towards the air inlet (11) against the elastic force of the second elastic piece (33) so as to open the second air guide channel (14).

5. The electric cup according to claim 4, wherein the second air guide channel (14) is provided with a second protrusion (141) on the inner peripheral wall of the end portion facing the air outlet (12), and the second protrusion (141) is used for abutting against the second sealing member (32) to seal off the second air guide channel (14).

6. The electric heating cup according to claim 1, wherein the valve body (1) comprises an upper valve body cover (15) and a lower valve body cover (16), and the upper valve body cover (15) is detachably covered on the lower valve body cover (16);

the exhaust port (12) is formed in the valve body upper cover (15), and the air inlet (11) is formed in the valve body lower cover (16).

7. The electric heating water cup according to claim 6, characterized in that the valve body (1) further comprises a valve body (17), the valve body (17) is installed in an installation cavity formed by the valve body upper cover (15) and the valve body lower cover (16), and the valve body (17) is respectively provided with the first air guide channel (13) and the second air guide channel (14).

8. The electric heating cup according to claim 7, wherein the outer peripheral wall of the valve body (17) is provided with a first sealing ring (171) and a second sealing ring (172);

the valve body (17) is installed in the installation cavity, and the valve body (17) is connected with the valve body upper cover (15) and the valve body lower cover (16) in a sealing mode through the first sealing ring (171) and the second sealing ring (172) respectively.

9. Electric hot water cup according to claim 1, characterized in that the cover (4) comprises:

a mounting cover (42) for detachably mounting the cover body (4) to the cup body (5);

the upper cover (41) is detachably covered on the mounting cover (42), and the mounting cover (42) forms a mounting space for mounting the pressure relief valve;

when the cover body (4) covers the cup body (5), the air inlet (11) is communicated with the inner cavity of the cup body (5), and the exhaust port (12) is communicated with the external environment.

10. The electric heating cup according to claim 9, wherein the bottom of the mounting cover (42) is provided with a through hole for communicating the inner cavity of the cup body (5) with the air inlet (11), and the side of the mounting cover (42) is provided with a through hole for communicating the air outlet (12) with the external environment.

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