CN114194550A

CN114194550A - Container with self-heating function

Info

Publication number: CN114194550A
Application number: CN202111550224.6A
Authority: CN
Inventors: 赵海波
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-18
Anticipated expiration: 2041-12-17
Also published as: CN114194550B

Abstract

The invention belongs to the technical field of heating devices, and particularly relates to a container with a self-heating function, which comprises a heating bin, a heating device and a heating device, wherein the heating bin is positioned in the container and is arranged on a shell; an opening is formed in one end face, located on the shell, of the heating bin, and a piston rod is inserted into the opening; a first piston is arranged at one end, close to the opening, of the piston rod, a first sealing ring is arranged on the circumference of the first piston, and a second piston is arranged at one end, far away from the opening, of the first piston rod; a raised ring is arranged between the second piston and the first piston and surrounds the circumference of the inner wall of the heating bin; a sealing gasket is arranged on one end face of the second piston close to the convex ring; the diameter of the second piston is smaller than the inner diameter of the heating chamber and larger than the inner diameter of the bulge ring. When the beverage heating device is used, the first piston is pushed to separate the second piston from the raised ring, so that liquid enters a cavity between the first piston and the second piston, an exothermic reaction is generated between the liquid and the heating bag, and the beverage in the container is heated.

Description

Container with self-heating function

Technical Field

The invention belongs to the technical field of heating devices, and particularly relates to a container with a self-heating function.

Background

At present, the beverage is in various types on the market; the containers for holding the beverage are only different in appearance, and the actual structures are all the same and different; in addition, the conventional containers for containing beverages do not have a heating function, so that the hard materials in the containers are all at normal temperature, and if the containers are in cold winter, the beverages in the containers are cold, and the drinking is not comfortable.

At present, most people go out and rarely go out with hot water; thirst is usually achieved by purchasing beverages to quench thirst; however, in cold winter, the temperature of the beverage is low, which may cause discomfort to the drinker and may affect the drinker's stomach function.

Disclosure of Invention

The invention discloses a container with a self-heating function, which aims to solve the technical problem that the body discomfort is caused after a drinker drinks a beverage due to the fact that the conventional beverage container has no heating function in the background art.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a container with self-heating function comprises a heating chamber arranged on a shell of the container and positioned in the container; an opening is formed in one end face, located on the shell, of the heating bin, and a first piston rod is inserted into the opening;

a first piston is arranged at one end, close to the opening, of the first piston rod, a first sealing ring which is in close contact with the circumferential surface of the inner wall of the heating bin is arranged on the circumferential surface of the first piston, and a limiting device used for limiting the movement of the first piston is arranged at the opening;

a second piston is arranged at one end of the first piston rod, which is far away from the opening; a first bulge ring is arranged on the inner wall of the heating bin between the second piston and the first piston and surrounds the circumferential surface of the inner wall of the heating bin; a sealing gasket is arranged on one end face, close to the first bulge ring, of the second piston;

the diameter of the second piston is smaller than the inner diameter of the heating chamber and larger than the inner diameter of the first bulge ring.

When the container is produced, only the heating package is required to be arranged in a cavity between the first piston and the second piston, and the liquid which is matched with the heating package to carry out exothermic reaction is arranged in a cavity between the second piston and the end face, far away from the opening, of the heating bin;

when the invention is used, the first piston is pushed, so that the first piston drives the first piston rod to move, and the first piston rod drives the second piston to move, so that the sealing gasket arranged on the second piston is separated from the first raised ring; because the diameter of the second piston is smaller than the inner diameter of the heating chamber and larger than the inner diameter of the first bulge ring, when the sealing gasket on the second piston is tightly attached to the first bulge ring, liquid can be prevented from entering a cavity between the first piston and the second piston, and the problem of early heating is caused; when the sealing gasket arranged on the second piston is separated from the first bulge ring, liquid can enter a cavity between the first piston and the second piston from a gap between the second piston and the inner wall of the heating bin, so that the liquid can perform an exothermic reaction with the heating bag; the beverage inside the container is heated.

In addition, the limiting device is arranged to prevent the first piston from being separated from the heating bin when the heating device is not in use, and the first piston pushes the second piston to move under the action of external force, so that the sealing gasket on the second piston is separated from the first raised ring, and the problem of early heating is caused.

Further, stop device is including setting up the first bellying on the inner wall of heating chamber, and set up on the first piston with the depressed part of first bellying cooperation.

According to the invention, the first protruding part and the recessed part are arranged, so that after the first protruding part and the recessed part are matched, the first piston can be prevented from being separated from the heating bin, and under the action of external force, the first piston pushes the second piston to move, so that the sealing gasket on the second piston is separated from the first protruding ring, and the problem of advanced heating is caused.

When the sealing gasket is used, the first piston is pressed by force, and the first piston is separated from the concave part to complete the separation of the sealing gasket and the first convex ring.

Further, set up the second bellying on the inner wall that the heating chamber is close to the opening part, the second bellying can mutually support with the depressed part that sets up on first piston, continues free displacement after restriction second piston intercommunication two cavities.

According to the invention, the second bulge part is arranged, so that after the sealing gasket is separated from the first bulge part and the chamber between the first piston and the second piston is communicated with the chamber formed by the second piston and one end surface of the heating chamber far away from the opening (hereinafter, the two chambers are referred to as chambers on two sides of the second piston), the second bulge part can be matched with the depression part, and the first piston and the second piston are prevented from continuously and freely moving.

After the second convex part is arranged, when the piston is used, the first piston is pushed until the second convex part is matched with the concave part, and then the pushing is stopped; therefore, when the heating bag is used, the situation that the first piston is pressed by hands all the time until all the liquid flows into the chamber for storing the heating bag can be avoided; the first piston and the second piston can be prevented from continuously and freely moving after the sealing gasket is separated from the first bulge.

Furthermore, an exhaust passage which enables the heating chamber to be communicated with the outside is arranged in the shell which forms the heating chamber.

The problem of explosion caused by overlarge pressure in the heating bin is avoided by arranging the exhaust channel.

Furthermore, a second protruding ring is arranged on the second piston, a second sealing ring is sleeved on the outer wall of the second protruding ring, and the second sealing ring can be in contact with the inner wall of the first protruding ring.

The second protruding ring is arranged, so that the condition that the chambers on the two sides of the second piston are communicated with each other due to accidents and heating is caused in advance is further avoided;

the hard material container is made of plastics and is easy to deform; if the first piston is also made of plastic and is made of a material which is easy to deform, the first piston deforms due to the factor of external force, so that the deformed force acts on the second piston, a sealing gasket on the second piston is separated from the first protruding part, and the problem of early reaction is caused; and this application through set up the second protruding ring with first protruding ring is mutually supported, can effectually avoid above-mentioned problem.

Furthermore, a sliding table is arranged on the circumferential surface of the second piston, and the sliding table is matched with a sliding groove formed in the first protruding ring to limit the circumferential movement of the second piston.

According to the invention, the sliding table and the sliding groove are arranged, and the sliding table is matched with the sliding groove, so that the circumferential rotation of the first piston and the second piston can be effectively prevented;

and because the limiting device adopts the structure that the first convex part and the concave part are matched with each other, and the concave part is arranged on the first piston, the problem that the first convex part cannot be matched with the concave part after the first piston rotates in the circumferential direction can be solved by limiting the circumferential rotation of the first piston and the second piston.

Furthermore, a second piston rod is installed on one end face, far away from the opening, of the second piston, and a third piston is installed on one end, far away from the second piston, of the second piston rod;

and the peripheral surface of the third piston is provided with a third sealing ring which is in close contact with the peripheral surface of the inner wall of the heating bin, and the third sealing ring can block a channel port of the exhaust channel, which is positioned on the inner wall of the heating bin.

According to the invention, the third piston is arranged, and the third sealing ring arranged on the third piston is contacted with the channel of the exhaust channel on the inner wall of the heating chamber, so that the third sealing ring blocks the exhaust channel, and liquid is prevented from flowing out of the exhaust channel when the heating chamber is not used. When the gas heating device is used, the first piston pushes the second piston to move, the third piston is pushed at the moment, the third sealing ring is separated from the channel opening of the exhaust channel on the inner wall of the heating bin, and then the reacted gas can be exhausted from the exhaust channel, so that the pressure in the heating bin is prevented from being too high.

Furthermore, an exhaust port is formed in the inner wall of the heating bin, which is located between the end wall, far away from the opening, of the third piston and the heating bin, and the exhaust port is communicated with the exhaust channel.

According to the invention, the exhaust port is arranged and communicated with the exhaust channel, so that back pressure caused by the third piston in the moving process is avoided.

Further, a fourth piston is arranged on the second piston rod and between the second piston and the third piston, and a through hole penetrating through the fourth piston is formed in the fourth piston; and a fourth sealing ring which is in close contact with the circumferential surface of the inner wall of the heating bin is arranged on the circumferential surface of the fourth piston, and the fourth sealing ring can block a channel port of the exhaust channel, which is positioned on the inner wall of the heating bin.

After the reaction is finished, the first piston can be continuously pushed, so that a fourth sealing ring arranged on the fourth piston seals the channel opening; and at this moment, the third sealing ring on the third piston also blocks the exhaust port, so that the situation that liquid in the heating bin flows out through the exhaust channel in the process of quoting after the reaction is finished, and a user is stained with the liquid on hand or body is effectively avoided.

Because the channel opening of the exhaust channel on the inner wall of the heating chamber is positioned between the fourth piston and the third piston during the reaction process, the air pressure during the heating process cannot be exhausted; therefore, the through hole is formed in the fourth piston, so that air pressure in the heating process can enter the cavity between the third piston and the fourth piston through the through hole and is exhausted through the exhaust channel.

Further, a third bulge part is arranged on the inner wall of the heating bin close to the opening; the third protruding portion can be matched with a recessed portion formed in the first piston, and the fourth piston is prevented from continuing to move freely after the fourth sealing ring blocks a channel opening in the inner wall of the heating bin.

According to the invention, the third bulge part is arranged, so that after the fourth sealing ring blocks the channel opening of the exhaust channel on the inner wall of the heating chamber, the third bulge part is matched with the concave part, the first piston is prevented from continuously moving, and then the fourth piston and the third piston are prevented from continuously moving; enabling a third sealing ring to seal the exhaust port, and enabling a fourth sealing ring to seal a channel port of the exhaust channel on the inner wall of the heating bin; after adopting above-mentioned mode, can avoid after the reaction, because the free motion of first piston drives third piston and fourth piston free motion, lead to third piston and gas vent separation, fourth piston and exhaust passage are located the passageway mouth separation of heated warehouses inner wall, cause the problem of the liquid outflow in the reaction storehouse.

Further, an annular recessed portion is arranged around the circumferential surface of the first piston, so that when the first protruding portion is matched with the recessed portion, the second protruding portion and the third protruding portion are both located in the annular recessed portion;

according to the invention, by arranging the annular concave part, when the first convex part is matched with the concave part, the second convex part and the third convex part can be positioned in the annular convex part, so that the second convex part and the third convex part are prevented from being deformed due to the contact of the second convex part and the third convex part with the first piston when the first convex part is matched with the concave part, and the second convex part and the third convex part cannot be matched with the concave part.

If not set up annular bellying, then second bellying and third bellying will be with the long-time in close contact with of first piston, and it can lead to comparatively labouring when promoting first piston, also can lead to in the follow-up use, second bellying and third bellying warp the back can't with the depressed part produces the cooperation.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the invention, the first piston drives the first piston rod to move by pushing the first piston, and the first piston rod drives the second piston to move, so that the sealing gasket arranged on the second piston is separated from the first raised ring; because the diameter of the second piston is smaller than the inner diameter of the heating chamber and larger than the inner diameter of the first bulge ring, when the sealing gasket on the second piston is tightly attached to the first bulge ring, liquid can be prevented from entering a cavity between the first piston and the second piston, and the problem of early heating is caused; when the sealing gasket arranged on the second piston is separated from the first bulge ring, liquid can enter a cavity between the first piston and the second piston from a gap between the second piston and the inner wall of the heating bin, so that the liquid can perform an exothermic reaction with the heating bag; the beverage inside the container is heated.

2. According to the invention, the first protruding part and the recessed part are arranged, so that after the first protruding part and the recessed part are matched, the first piston can be prevented from being separated from the heating bin, and under the action of external force, the first piston pushes the second piston to move, so that the sealing gasket on the second piston is separated from the first protruding ring, and the problem of advanced heating is caused.

3. The invention effectively avoids the problem of explosion caused by overlarge air pressure in the heating bin by arranging the exhaust channel.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic view of the external structure of the container of the present invention.

Fig. 2 is a cross-sectional view a-a of fig. 1 according to the present invention.

Fig. 3 is a detailed view of part C of fig. 2 according to the present invention.

FIG. 4 is a schematic view of the detail C-1 in FIG. 3 according to the present invention.

FIG. 5 is a schematic view of the detail C-2 in FIG. 3 according to the present invention.

FIG. 6 is a schematic view of the detail C-3 in FIG. 3 according to the present invention.

Fig. 7 is a cross-sectional view B-B of fig. 1 in accordance with the present invention.

Fig. 8 is a detailed view of the invention shown in fig. 7 and indicated by D.

Fig. 9 is a schematic view of the bottom structure of the container of the present invention.

Fig. 10 is a schematic diagram of the invention shown in detail E of fig. 9.

Description of reference numerals: 1. a first piston; 2. a first piston rod; 3. a second piston; 4. a second piston rod; 5. a first raised ring; 6. a second raised ring; 7. a chute; 8. an exhaust passage; 9. a third piston; 10. a fourth piston; 11. a through hole; 12. an exhaust port; 13. an annular recess; 14. a first boss portion; 15. a second boss portion; 16. a third boss portion; 17. a sliding table; 18. an arc-shaped slot; 19. an acting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of embodiments of the present application, generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

The following describes an embodiment of the present invention in detail with reference to fig. 1 to 10;

in this embodiment, the heating chamber is cylindrical, and correspondingly, all the pistons described in the present invention, i.e., the first piston 1, the second piston 3, etc., are cylindrical.

A container with self-heating function is characterized by comprising a heating chamber arranged on a shell of the container and positioned in the container; an opening is formed in one end face, located on the shell, of the heating bin, and a first piston rod 2 is inserted into the opening;

a first piston 1 is arranged at one end, close to the opening, of the first piston rod 2, a first sealing ring which is in contact with the circumference of the inner wall of the heating bin is arranged on the circumference of the first piston 1, and a limiting device used for limiting the first piston 1 to move is arranged at the opening;

a second piston 3 is arranged at one end of the first piston rod 2 far away from the opening; a first bulge ring 5 is arranged on the inner wall of the heating bin between the second piston 3 and the first piston 1 and surrounds the circumference of the inner wall of the heating bin; a sealing gasket is arranged on one end face, close to the first bulge loop 5, of the second piston 3;

the diameter of the second piston 3 is smaller than the inner diameter of the heating chamber and larger than the inner diameter of the first bulge loop 5.

The housing of the container is made of a heat conductive material, for example, aluminum.

The limiting device comprises a first protruding part 14 arranged on the inner wall of the heating chamber and a concave part arranged on the first piston 1 and matched with the first protruding part 14.

Set up second bellying 15 on the inner wall that the heating chamber is close to the opening part, second bellying 15 can mutually support with the depressed part that sets up on first piston 1, continues free displacement after restricting two cavities of second piston 3 intercommunication.

An exhaust passage 8 for communicating the heating chamber with the outside is provided in the housing constituting the heating chamber.

The second piston 3 is provided with a second protruding ring 6, the outer wall of the second protruding ring 6 is sleeved with a second sealing ring, and the second sealing ring can be in contact with the inner wall of the first protruding ring 5.

A sliding table 17 is arranged around the circumference of the second piston 3, and the sliding table 17 is matched with the sliding groove 7 arranged on the first bulge loop 5 to limit the circumferential movement of the second piston 3. The sliding table 17 is a T-shaped sliding table 17, and the corresponding sliding groove 7 is a T-shaped sliding groove 7.

A second piston rod 4 is installed on one end face, far away from the opening, of the second piston 3, and a third piston 9 is installed on one end, far away from the second piston 3, of the second piston rod 4;

and a third sealing ring which is contacted with the inner wall of the heating bin is arranged on the circumference of the third piston 9, and the third sealing ring can block a channel opening of the exhaust channel 8 on the inner wall of the heating bin.

An exhaust port 12 is formed in the inner wall of the heating bin, between the end wall, far away from the opening, of the third piston 9 and the heating bin, and the exhaust port 12 is communicated with the exhaust channel 8.

A fourth piston 10 is arranged on the second piston rod 4 and between the second piston 3 and the third piston 9, and a through hole 11 penetrating through the fourth piston 10 is formed in the fourth piston 10; and a fourth sealing ring which is in contact with the circumference of the inner wall of the heating bin is arranged on the circumference of the fourth piston 10, and the fourth sealing ring can block a channel opening of the exhaust channel 8, which is positioned on the inner wall of the heating bin.

A third bulge 16 is arranged on the inner wall of the heating bin close to the opening; the third protruding portion 16 can be matched with a recessed portion arranged on the first piston 1, so that the fourth piston 10 is prevented from continuously and freely moving after a fourth sealing ring blocks a channel opening on the inner wall of the heating bin.

An annular recess 13 is provided around the circumference of the first piston 1 such that when the first projection 14 is interfitted with the recess, the second projection 15 and the third projection 16 are both located within the annular recess 13.

The working principle of the present invention is described in detail below:

when the container is produced, only a heating bag is required to be arranged in a cavity between the first piston 1 and the second piston 3, and liquid which is matched with the heating bag to carry out exothermic reaction is arranged in a cavity between the second piston 3 and one end face, far away from the opening, of the heating bin;

the adoption of the heating bag and the adoption of the liquid are not the creation points of the invention, and the adoption of the heating bag and the corresponding liquid only needs to select the heating bag and the corresponding liquid which meet the conditions in the prior art under the condition of meeting the working principle of the invention, for example, water as the liquid and quicklime as the heating bag.

In the initial state of the present invention, that is, the state of the entire apparatus when the heating function is not used, is as follows:

the concave part arranged on the first piston 1 is matched and locked with the first convex part 14, at the moment, the sealing gasket arranged on the second piston 3 is tightly attached to the first convex ring 5, and the third sealing ring arranged on the third piston 9 just blocks the channel opening of the exhaust channel 8 positioned on the inner wall of the heating bin; and the second boss 15 and the third boss 16 are both located in the annular recess 13 at this time.

As can be seen from fig. 3 to 6, when in the above initial state, there is no fear that the liquid flows out of the air vent passage 8; as can be seen from fig. 3 to 6, the third sealing ring provided on the third piston 9 has blocked the passage opening of the exhaust passage 8 located on the inner wall of the heating chamber, and the exhaust port 12 is located in the chamber formed by the third piston 9 and the end face of the heating chamber far from the opening; although the fourth piston 10 is provided with the through hole 11, the liquid can enter the chamber between the third piston 9 and the fourth piston 10 from the through hole 11, and cannot enter the chamber formed by the third piston 9 and the end of the heating chamber far away from the opening from the chamber; the liquid in the present invention does not leak.

When the heating function is needed, the first piston 1 is pushed to move until the concave part arranged on the first piston 1 is matched and locked with the second convex part 15, then the pushing is stopped, and a container for containing beverage is placed right; at this time, the second raised ring 6 arranged on the second piston 3 is separated from the first raised ring 5, so that liquid is left from a gap between the second piston 3 and the inner wall of the heating chamber, flows into a chamber between the first piston 1 and the second piston 3 through the gap between the first raised ring 5 and the second raised ring 6, is in contact with the heating bag, and performs an exothermic reaction; and when the concave part arranged on the first piston 1 is matched with the second convex part 15, the exhaust channel 8 is positioned between the third piston 9 and the fourth piston 10 at the channel opening of the inner wall of the heating chamber, so that the air pressure generated in the heating chamber due to the exothermic reaction can enter a chamber between the fourth piston 10 and the third piston 9 through the through hole 11 of the fourth piston 10, then enter the exhaust channel 8 through the chamber, and be exhausted through the exhaust channel 8.

After the heating is finished, the first piston 1 is pushed until the concave part arranged on the first piston 1 is matched with the third convex part 16; at this time, a third sealing ring arranged on the third piston 9 blocks the exhaust port 12; a fourth sealing ring arranged on the fourth piston 10 seals a channel opening of the exhaust channel 8 on the inner wall of the heating bin; so that the liquid in the heating bin can not flow out; the liquid for heating is prevented from flowing out of the heating chamber to wet the clothes of the user in the drinking process.

Referring to fig. 6 and 8, the present invention avoids circumferential rotation of the second piston 3 and thus the first piston 1 by providing the sliding slot 7 cooperating with the sliding table 17, so that the first boss 14, the second boss 15 and the third boss 16 can cooperate with the recess on the first piston 1 when in use.

Referring to fig. 9 and 10, the heating chamber of the present invention is detachably assembled with the container, the bottom of the container is provided with an arc-shaped slot 18, a force plate 19 is arranged on the housing of the heating chamber at the bottom of the container, and the heating chamber is assembled with the container in a way of matching the convex part and the concave part; when heating is not required, a finger can be placed between the force plate 19 and the arc-shaped slot 18, and the force plate 19 is pulled, so that the heating chamber is pulled out integrally.

The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.

Claims

1. A container with self-heating function is characterized by comprising a heating chamber which is arranged on a shell of the container and is positioned in the container; an opening is formed in one end face, located on the shell, of the heating bin, and a first piston rod (2) is inserted into the opening;

a first piston (1) is installed at one end, close to the opening, of the first piston rod (2), a first sealing ring in close contact with the circumferential surface of the inner wall of the heating bin is installed on the circumferential surface of the first piston (1), and a limiting device used for limiting the first piston (1) to move is arranged at the opening;

a second piston (3) is arranged at one end, far away from the opening, of the first piston rod (2); a first bulge ring (5) is arranged on the inner wall of the heating bin between the second piston (3) and the first piston (1) and surrounds the circumferential surface of the inner wall of the heating bin; a sealing gasket is arranged on one end face, close to the first convex ring (5), of the second piston (3);

the diameter of the second piston (3) is smaller than the inner diameter of the heating chamber and larger than the inner diameter of the first bulge ring (5).

2. A container with heating function according to claim 1, characterized in that said limiting means comprise a first protrusion (14) provided on the inner wall of the heating chamber, and a recess provided on the first piston (1) cooperating with said first protrusion (14).

3. A container with heating function according to claim 1, characterized in that a second protrusion (15) is provided on the inner wall of the heating chamber near the opening, and the second protrusion (15) can cooperate with a recess provided on the first piston (1) to limit the second piston (3) from continuing to move freely after communicating the two chambers.

4. A container with heating function according to claim 1, characterized in that the inside of the housing constituting the heating chamber is provided with an exhaust passage (8) for communicating the heating chamber with the outside.

5. The container with the heating function according to claim 1, wherein the second piston (3) is provided with a second raised ring (6), the outer wall of the second raised ring (6) is sleeved with a second sealing ring, and the second sealing ring can be in contact with the inner wall of the first raised ring (5).

6. A container with heating function according to claim 1, characterized in that a sliding table (17) is arranged on the peripheral surface of the second piston (3), and the sliding table (17) cooperates with the sliding groove (7) arranged on the first raised ring (5) to limit the circumferential movement of the second piston (3).

7. A container with a heating function according to claim 4, characterized in that a second piston rod (4) is mounted on one end face of the second piston (3) far away from the opening, and a third piston (9) is mounted on one end of the second piston rod (4) far away from the second piston (3);

and a third sealing ring which is in close contact with the circumferential surface of the inner wall of the heating bin is arranged on the circumferential surface of the third piston (9), and the third sealing ring can block a channel port of the exhaust channel (8) which is positioned on the inner wall of the heating bin.

8. A container with heating function according to claim 7, characterized in that an air outlet (12) is arranged on the inner wall of the heating chamber between the third piston (9) and the end wall of the heating chamber far from the opening, and the air outlet (12) is communicated with the air outlet channel (8).

9. The container with the heating function according to claim 7, wherein a fourth piston (10) is mounted on the second piston rod (4) and positioned between the second piston (3) and the third piston (9), and a through hole (11) penetrating through the fourth piston (10) is formed in the fourth piston (10); and a fourth sealing ring which is in close contact with the circumferential surface of the inner wall of the heating bin is arranged on the circumferential surface of the fourth piston (10), and the fourth sealing ring can seal a channel opening of the exhaust channel (8) on the inner wall of the heating bin.

10. A container with heating function according to claim 9, characterized in that the inner wall of the heating chamber close to the opening is provided with a third bulge (16); the third protruding portion (16) can be matched with a recessed portion arranged on the first piston (1) to limit the fourth sealing ring to block a channel opening on the inner wall of the heating bin, and then the fourth piston (10) continues to move freely.