Controllable injection self-heating device and self-heating container

Abstract

This application discloses a controllable injection self-heating device and a self-heating container. The self-heating device includes: an adapter cover with a screw thread at one end and an adapter port at the other end; an injection cylinder detachably mounted on the adapter port, the injection cylinder including an injection port and a liquid storage chamber; a heating tube detachably mounted on the injection port and containing a heating agent; and a pushing assembly including a piston and a driving cylinder, the driving cylinder covering the outside of the liquid storage chamber. The driving cylinder has multiple sets of sequentially connected guide grooves, each set of guide grooves including at least a transverse groove and a longitudinal groove. A guide seat that slides within the guide groove is provided on the outer circumferential surface of the liquid storage chamber. When the guide seat is located in one of the longitudinal grooves, the driving cylinder can move axially relative to the storage chamber to inject heating water; when the guide seat is located in one of the transverse grooves, the driving cylinder can rotate in a first direction. This application provides rich development directions for self-heating products through independent setting and design optimization of the self-heating device.

Description

Technical Field

[0001] This application relates to the food industry, and in particular to self-heating devices and containers with controllable injection. Background Technology

[0002] As people's living standards improve, the quality of their daily diet has become a more important indicator, and the emergence of self-heating foods demonstrates the widespread adoption of this phenomenon. Compared to heating solid foods, the self-heating of liquid beverages has always been a challenge, and those skilled in the art have been continuously striving to overcome it.

[0003] For example, Chinese patent document CN105540060A discloses a disposable self-heating beverage bottle. The upper part of the beverage bottle is a regular bottle body, and the lower part is an inner liner. A fixing ring has several through holes, and the through holes are covered with a waterproof and breathable membrane. The lower end of the inner wall of the fixing ring has an internal thread, and the fixing ring is made of heat-insulating material. The upper end of the outer circumference of the rotating outer cup has an external thread, and the top surface of the rotating outer cup has at least one cutter. The rotating outer cup is made of heat-insulating material. The longitudinal dimension of the water pack is smaller than the longitudinal dimension of the fixing ring. The upper end of the fixing ring is fixedly connected to the lower end of the regular bottle body. The external thread of the rotating outer cup is screwed into the internal thread of the fixing ring. The fixing ring, the rotating outer cup, and the inner liner form a heating reaction chamber. The water pack is pasted on the upper end of the outer circumference of the inner liner. The self-heating pack is placed inside the rotating outer cup. The entire outer circumference of the disposable self-heating beverage bottle is wrapped with a plastic film.

[0004] Compared to food, beverages, which are mainly composed of water, have a higher specific heat capacity. Heating packs need to release a lot of heat to heat the beverages to a higher temperature. At the same time, the packaging structure of beverages is relatively simple, and disposable containers increase the manufacturing cost of beverages, which has a negative impact. Summary of the Invention

[0005] To address the aforementioned technical problems, this application discloses a controllable injection self-heating device, comprising:

[0006] The adapter cap has a screw hole at one end for connecting to the bottle body and an adapter port at the other end.

[0007] The syringe body is detachably mounted on the adapter port. The syringe body includes an injection port extending through the adapter port to one side of the screw port and a liquid storage chamber located on the other side of the adapter port. The liquid storage chamber is used to contain heated water.

[0008] A heating tube is detachably mounted on the injection port and extends away from the injection port, and a heating agent is contained within the heating tube.

[0009] The pushing assembly includes a piston that is slidably sealed in the liquid storage chamber and a drive cylinder that is linked to the piston. The drive cylinder is covered outside the liquid storage chamber. The drive cylinder is provided with multiple sets of sequentially connected guide grooves. Each set of guide grooves includes at least a transverse groove extending circumferentially along the drive cylinder and a longitudinal groove extending axially along the drive cylinder. The outer circumferential surface of the liquid storage chamber is provided with a guide seat that slides in the guide groove.

[0010] When the guide seat is located in one of the longitudinal grooves, the drive cylinder is in the conveying state, and the drive cylinder can move axially relative to the liquid storage cavity to realize the injection of the heating water; when the guide seat is located in one of the transverse grooves, the drive cylinder is in the blocking state, and the drive cylinder can rotate in the first direction to realize the alignment of the guide seat and the next longitudinal groove to enter the conveying state.

[0011] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0012] Optionally, the guide groove is provided in at least three sets, wherein the end of the horizontal groove of the last set of guide grooves away from the vertical groove is connected to a free groove. The free groove extends along the axial direction of the drive cylinder. When the guide seat is located in the free groove, the drive cylinder can move until the piston abuts against the bottom of the liquid storage chamber.

[0013] Optionally, the inflection points of both the longitudinal and transverse grooves are raised to the touch, and the raised areas extend from the groove wall at the location into the groove to reduce the opening width at that location.

[0014] When the guide seat passes the inflection point of the longitudinal groove and the transverse groove, the tactile protrusion or the guide seat deforms to avoid the other side.

[0015] Optionally, the inner edge of the adapter protrudes away from the screw hole to form a positioning ring, and the injection barrel is inserted into the positioning ring; the positioning ring is provided with an axially open positioning notch, the circumferential sidewall of the positioning notch is provided with a snap-fit ​​part, and the injection barrel is provided with a first snap-fit ​​post and a second snap-fit ​​post.

[0016] During the process of inserting the injection barrel into the positioning ring, the first locking post and the second locking post are axially aligned with the locking part via the positioning notch, and the injection barrel rotates circumferentially in the second direction to achieve the engagement of the first locking post, the second locking post and the locking part.

[0017] Optionally, the first direction and the second direction are opposite.

[0018] Optionally, in the assembled position, the first locking post and the second locking post are located on both sides of the axial direction of the locking part, and when the driving cylinder moves in the first direction, the deformation trend of the first locking post is opposite to that of the second locking post.

[0019] Optionally, the injection port is provided with an anti-diffusion valve. The anti-diffusion valve closes the injection port in a free state. After the liquid storage chamber is pressurized by the piston, the heating water can automatically open the anti-diffusion valve to complete the injection.

[0020] The anti-diffusion valve includes at least two sets of valve plates, each set of valve plates including elastic sealing plates symmetrically arranged in the injection port, and the valve plates of each set are arranged sequentially in the axial direction of the injection port.

[0021] Optionally, one end of the heating tube near the injection port is connected to an exhaust pipe, and the other end of the exhaust pipe passes through the adapter cover to form an exhaust port. The exhaust pipe is provided with an anti-overflow component that only allows gas to pass through.

[0022] Optionally, the self-heating device further includes a protective cylinder, the opening of which mates with the adapter cover and houses the injection cylinder and the push assembly. A sealing baffle is provided at the opening of the protective cylinder, and when the protective cylinder and the adapter cover are assembled, the sealing baffle closes the exhaust port.

[0023] This application also discloses a self-heating container, including a bottle and the self-heating device in the above-described technical solution.

[0024] The technical solution disclosed in this application, through the independent setting of the self-heating device, provides a basis for the flexible application of the self-heating device while meeting heating needs, avoids the binding of the self-heating device and the packaging container, and has greater design prospects; at the same time, the optimization of the self-heating device can realize a segmented, multiple, and controllable heating process, and users can freely choose the heating speed, thereby expanding the application scenarios and providing rich development directions for product optimization.

[0025] The specific beneficial technical effects will be further explained in the specific implementation methods in conjunction with specific structures or steps. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the self-heating component and the bottle body in one embodiment;

[0027] Figure 2 for Figure 1 A schematic diagram of the self-heating component assembly in the diagram;

[0028] Figure 3 for Figure 2 Cross-sectional view of the self-heating components and bottle body in the middle;

[0029] Figure 4 for Figure 2 A schematic diagram showing the fit between the self-heating components and the internal structure of the bottle.

[0030] Figure 5 for Figure 4 Enlarged schematic diagram of the adapter cover part;

[0031] Figure 6 This is a schematic diagram of the self-heating component structure in one embodiment;

[0032] Figure 7 for Figure 6 Enlarged schematic diagram of the guide groove section;

[0033] Figure 8 for Figure 6 Enlarged schematic diagram of the snap-fit ​​part in the middle;

[0034] Figure 9 for Figure 6 A schematic diagram of the internal fit and arrangement of the self-heating components.

[0035] The annotations in the figure are explained as follows:

[0036] 1. Bottle body;

[0037] 2. Fitting cover; 21. Screw opening; 22. Fitting port; 23. Positioning ring; 231. Positioning notch; 232. Snap-fit ​​part;

[0038] 3. Injection cylinder; 31. Injection port; 311. Anti-diffusion valve; 32. Liquid reservoir; 321. Heating water; 33. Guide seat; 341. First locking post; 342. Second locking post;

[0039] 4. Heating tube body; 41. Heating agent; 42. Exhaust pipe; 421. Exhaust port; 422. Anti-overflow component;

[0040] 5. Pushing assembly; 51. Piston; 52. Drive cylinder; 53. Guide groove; 531. Horizontal groove; 532. Vertical groove; 533. Free groove; 534. Tactile protrusion;

[0041] 6. Protect the cylinder body; 61. Seal the baffle plate. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] Reference Appendix Figure 1 To be continued Figure 9 As shown, this application discloses a self-heating device with controllable injection, comprising:

[0046] The adapter cap 2 has a screw hole 21 at one end that connects to the bottle body 1, and an adapter port 22 at the other end.

[0047] The syringe body 3 is detachably mounted on the adapter port 22. The syringe body 3 includes an injection port 31 extending through the adapter port 22 to one side of the screw port 21 and a liquid storage chamber 32 located on the other side of the adapter port 22. The liquid storage chamber 32 is used to contain heated water 321.

[0048] Heating tube 4 is detachably mounted on injection port 31 and extends away from injection port 31. Heating tube 4 contains heating agent 41.

[0049] The pushing component 5 includes a piston 51 that is slidably sealed in the liquid storage chamber 32 and a driving cylinder 52 that is linked to the piston 51. The driving cylinder 52 is covered outside the liquid storage chamber 32. The driving cylinder 52 is provided with a plurality of sequentially connected guide grooves 53. Each set of guide grooves 53 includes at least a transverse groove 531 extending circumferentially along the driving cylinder 52 and a longitudinal groove 532 extending axially along the driving cylinder 52. A guide seat 33 that slides in the guide groove 53 is provided on the outer peripheral surface of the liquid storage chamber 32.

[0050] When the guide seat 33 is located in one of the longitudinal grooves 532, the drive cylinder 52 is in the conveying state (see attached). Figure 6 As shown, the drive cylinder 52 can move axially relative to the liquid storage chamber to inject the heating water 321; when the guide seat 33 is located in one of the transverse grooves 531, the drive cylinder 52 is in a blocking state, and the drive cylinder 52 can rotate in the first direction to align the guide seat 33 and the next longitudinal groove 532 to enter the conveying state.

[0051] The self-heating device works with the bottle body 1 via an adapter cap 2. The adapter cap 2 can be configured to be compatible with common bottle bodies 1, or it can be configured in various sizes to adapt to platforms of different sizes. This configuration allows for independent setup of the self-heating device, providing a foundation for flexible application while meeting heating requirements. It avoids the binding of the self-heating device to the packaging container, thus offering greater design potential. Furthermore, optimized settings of the self-heating device can achieve segmented, multi-stage, and controllable heating processes, allowing users to freely select the heating rate. This expands the application scenarios and provides rich development directions for product optimization.

[0052] The segmented, multi-stage, and controllable heating process is primarily achieved by controlling the injection volume of heating water 321. In the self-heating field, under the premise of a suitable ratio of heating water 321 and heating agent 41, the total heating volume is determined by the mass of heating agent 41, and the mass of heating water 321 can affect the heating speed. The water volume corresponding to the longitudinal groove 532 in the first set of guide grooves 53 in this application is the minimum water volume corresponding to the heating agent 41 in the heating tube, i.e., the fastest heating condition, suitable for rapid heating scenarios, such as when the ambient temperature is low and the user needs to heat the food quickly. The water volume in the liquid storage chamber 32 in this application is the maximum water volume corresponding to the heating agent 41 in the heating tube under a suitable ratio, i.e., the most gradual heating condition, suitable for heat preservation scenarios, such as keeping heated beverages or food warm. The setting of multiple sets of guide grooves 53 allows for multiple settings in the above two conditions, enabling users to freely choose.

[0053] For details on the design of guide groove 53, please refer to the appendix. Figure 6As shown, at least three sets of guide grooves 53 are provided. In actual use, the three sets of guide grooves 53 correspond to three allowable injection volumes, meaning there is an upper limit to the water injection volume corresponding to a single set of guide grooves 53. Users cannot inject all the heating water 321 under the guidance of a single set of guide grooves 53. Therefore, structurally, this allows for segmented, multiple, and controllable injection of the heating water 321, and based on this, controls the heating process. In detail, the end of the transverse groove 531 of the last set of guide grooves 53, away from the longitudinal groove 532, is connected to a free groove 533. The free groove 533 extends axially along the drive cylinder 52. When the guide seat 33 is located within the free groove 533, the drive cylinder 52 can move until the piston 51 abuts against the bottom of the liquid storage chamber 32. The extension distance of the free groove 533 is greater than that of the longitudinal grooves 532 in the previous sets of guide grooves 53. In terms of design principle, guided by the free groove 533, the drive cylinder 52 can drive the piston 51 to inject all the heating water 321 into the heating tube. In the embodiment shown in the attached figures, the heating medium is a beverage. For common beverage volumes on the market, the heating agent 41 in this embodiment weighs 30 to 70 grams, and the corresponding heating water 321 weighs 30 to 210 grams. For beverages of 300-500 ml, the preferred heating agent 41 weighs 35 to 45 grams, and the corresponding heating water 321 weighs 50 to 160 grams.

[0054] The main purpose of the horizontal slot 531 design is to guide users to pay attention to the tactile feedback of the heating level during operation. For further details, please refer to the attached document. Figure 7 As shown, the inflection points of the longitudinal groove 532 and the transverse groove 531 are both tactilely raised 534. The groove wall at the location of the tactilely raised 534 extends into the groove to reduce the opening width at that location.

[0055] When the guide seat 33 passes the inflection point of the longitudinal groove 532 and the transverse groove 531, the tactile protrusion 534 or the guide seat 33 deforms to avoid the other side.

[0056] In addition to its reminder function, the tactile protrusion 534 can also serve a protective function. For example, in actual products, the tactile protrusion 534 is also set at the beginning of the longitudinal groove 532 of the first set of guide grooves 53 to prevent the drive cylinder 52 from moving unexpectedly during transportation, which could lead to unnecessary losses.

[0057] For assembly details, please refer to the appendix. Figure 8As shown, the inner edge of the adapter port 22 protrudes away from the screw port 21 to form a positioning ring 23, and the injection cylinder 3 is inserted into the positioning ring 23. This insertion arrangement facilitates the installation and fixation of the self-heating component and provides a basis for its maintenance. Specifically, the positioning ring 23 has an axially open positioning notch 231, and the circumferential sidewall of the positioning notch 231 has a locking portion 232. The injection cylinder 3 has a first locking post 341 and a second locking post 342. The first locking post 341 and the second locking post 342 can cooperate with the locking portion 232, limiting the relative positional relationship between the adapter cap 2 and the injection cylinder 3 in the axial and circumferential directions. In terms of the cooperation details, during the insertion of the injection cylinder 3 into the positioning ring 23, the first locking post and the second locking post 342 are axially aligned with the locking portion 232 via the positioning notch 231. The injection cylinder 3 rotates circumferentially in the second direction to achieve cooperation between the first locking post, the second locking post 342, and the locking portion 232.

[0058] During use, the drive cylinder 52 rotates, thus causing a rotational tendency in the injection cylinder 3. To prevent accidental separation of the first and second locking posts 342 from the locking portion 232, this embodiment employs a clamping locking method. In the assembled position, the first and second locking posts 342 are located on opposite sides of the axial direction of the locking portion 232. When the drive cylinder 52 moves in the first direction, the deformation trend of the first locking post is opposite to that of the second locking post 342. Furthermore, the first and second locking posts 341 and 342 are arranged in groups, with multiple groups provided on the circumferential surface of the injection cylinder 3. The positioning notch 231 and the locking portion 232 are also provided with corresponding multiple groups on the positioning ring 23.

[0059] In practice, the cooperation between the first locking post, the second locking post 342, and the locking part 232 is sufficient to resist the torque that the driving cylinder 52 may exert on the injection cylinder 3 during operation. To further improve the stability of the product, in the embodiment shown in the attached drawings, the first direction (i.e., the attached...) Figure 6 (from left to right) and the second direction (i.e., attached) Figure 6 The direction from right to left is opposite. That is, the force exerted by the driving cylinder 52 during its engagement with the guide seat 33 cannot drive the first locking post, the second locking post 342, and the locking part 232 to separate. The arrangement in this embodiment can be implemented independently of the arrangement described above.

[0060] Besides securing the syringe body 3, the adapter cap 2 primarily controls the relative position of the heating tube 4 within the bottle body 1. As the heating component that comes into contact with the beverage or food, the heating tube 4 directly affects the heating effect. In the matching bottle body 1, the heating tube 4 extends at least to the lower half of the bottle body 1, with the heating agent 41 positioned in the lower half to ensure sufficient heat exchange between the heating element and the beverage or food. In scenarios where the beverage or food volume is sufficient, the heating agent 41 can be evenly distributed within the heating tube 4, thereby achieving a larger heat exchange area. This even distribution can be achieved by setting the packaging material of the heating agent 41 into spaced, independent spaces arranged axially along the heating tube 4. This arrangement facilitates both the distribution of the heating agent 41 and assembly. In some embodiments, the heating agent 41 within the heating tube is replaceable, allowing the user to remove the used heating agent 41 and refill it with new heating agent 41 for reuse of the self-heating device.

[0061] Independent of the optimized configuration of the heating agent 41, the heating tube 4 is provided with recesses to increase the surface area and improve the heat exchange effect. The recesses form a semi-enclosed flow channel, which includes at least an inlet and an outlet in the vertical direction. Under the action of the heat from the heating agent 41, the heated medium, such as beverages or food, can spontaneously diffuse in the flow channel in a predetermined direction, further improving the heat exchange effect.

[0062] Regarding other details, to prevent the heating water 321 from spreading during storage and transportation, causing the heating agent 41 to become damp or accidentally heat up, please refer to the appendix. Figure 5 As shown, an anti-diffusion valve 311 is provided inside the injection port 31. In its free state, the anti-diffusion valve 311 closes the injection port 31. After the liquid storage chamber 32 is pressurized by the piston 51, the heated water 321 can automatically open the anti-diffusion valve 311 to complete the injection. In its actual structure, the anti-diffusion valve 311 includes at least two sets of valve plates. Each set of valve plates includes elastic sealing plates symmetrically arranged inside the injection port 31, with each set of valve plates arranged sequentially along the axial direction of the injection port 31. The two sets of valve plates essentially form two seals, thus avoiding the problem of incomplete sealing in this type of valve. The arrangement in this embodiment overcomes the cumbersome operation of manually opening the sealing film by opening the cover in existing products, and also avoids the complex assembly problem of needing the needle-piercing component to break through the seal during movement.

[0063] To avoid high pressure issues inside the heating element during the heating process, please refer to the attached document. Figure 4 To be continued Figure 5As shown, one end of the heating tube 4 near the injection port 31 is connected to an exhaust pipe 42. The other end of the exhaust pipe 42 passes through the adapter cap 2 and forms an exhaust port 421. An anti-overflow component 422, which only allows gas to pass through, is installed inside the exhaust pipe 42. In actual use, during the heating process, the heating water 321 is held inside the heating tube 4 by gravity, and excess pressure is released as gas through the exhaust pipe 42. The anti-overflow component 422 prevents liquid from accidentally entering the exhaust pipe 42 during the injection of the heating water 321 or in the event of accidental spillage of the bottle 1. In actual products, considering cost factors, the anti-overflow component 422 can be made of a porous material with a heat resistance temperature of not less than 150 degrees Celsius.

[0064] The placement of the vent pipe 42 exposes the heating agent 41 to the risk of environmental exposure; specifically, external moisture may cause the heating agent 41 to malfunction. A rubber stopper can be installed at the vent port 421, and the stopper should be opened before use. Alternatively, refer to the appendix. Figure 1 To be continued Figure 3 As shown, the self-heating device also includes a protective cylinder 6. The opening of the protective cylinder 6 mates with the adapter cover 2 and houses the injection cylinder 3 and the pushing component 5. A sealing baffle 61 is provided at the opening of the protective cylinder 6. When the protective cylinder 6 and the adapter cover 2 are assembled, the sealing baffle 61 closes the exhaust port 421. This embodiment cleverly utilizes the feature that the protective cylinder 6 needs to be opened before use, by placing the sealing baffle 61 inside the protective cylinder 6, thereby simplifying the operation process. The protective cylinder 6 not only protects the components but can also be used as an independent food container or cup for the convenience of the user.

[0065] In actual products, the self-heating component in this application can appear independently. That is, users can choose to purchase the self-heating component separately for use with common beverage or open containers on the market, or they can purchase the bottle 1 designed in conjunction with the self-heating component, with the bottle 1 filled with beverages or food. Therefore, it is easy to understand that this application also discloses a self-heating container, including the bottle 1 and the self-heating device in the above-mentioned technical solution.

[0066] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0067] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the 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 modifications and improvements all fall within the protection scope of this application.

Claims

1. A self-heating device for controllable injection, characterized in that, include: The adapter cap has a screw hole at one end for connecting to the bottle body and an adapter port at the other end. The syringe body is detachably mounted on the adapter port. The syringe body includes an injection port extending through the adapter port to one side of the screw port and a liquid storage chamber located on the other side of the adapter port. The liquid storage chamber is used to contain heating water. An anti-diffusion valve is provided in the injection port. The anti-diffusion valve closes the injection port in the free state. The anti-diffusion valve includes a valve plate, and the valve plate includes elastic sealing plates symmetrically arranged in the injection port. A heating tube is detachably mounted on the injection port and extends away from the injection port, and a heating agent is contained within the heating tube. The push assembly includes a piston that is slidably sealed within the liquid storage chamber and a drive cylinder that is linked to the piston. After the liquid storage chamber is pressurized by the piston, the heating water can automatically open the anti-diffusion valve to complete the injection. The drive cylinder is covered outside the liquid storage chamber. The drive cylinder is provided with multiple sets of sequentially connected guide grooves. Each set of guide grooves includes at least a transverse groove extending circumferentially along the drive cylinder and a longitudinal groove extending axially along the drive cylinder. The outer circumferential surface of the liquid storage chamber is provided with a guide seat that slides within the guide groove. When the guide seat is located in one of the longitudinal grooves, the drive cylinder is in the conveying state, and the drive cylinder can move axially relative to the liquid storage cavity to realize the injection of the heating water; when the guide seat is located in one of the transverse grooves, the drive cylinder is in the blocking state, and the drive cylinder can rotate in the first direction to realize the alignment of the guide seat and the next longitudinal groove to enter the conveying state.

2. The self-heating device with controllable injection according to claim 1, characterized in that, The guide groove is provided in at least three sets, wherein the end of the horizontal groove of the last set of guide grooves is connected to a free groove away from the vertical groove. The free groove extends along the axial direction of the drive cylinder. When the guide seat is located in the free groove, the drive cylinder can move until the piston abuts against the bottom of the liquid storage chamber.

3. The self-heating device with controllable injection according to claim 1, characterized in that, The inflection points of both the longitudinal and transverse grooves are raised to the touch, and the raised areas extend from the groove wall at the location into the groove to reduce the opening width at the location. When the guide seat passes the inflection point of the longitudinal groove and the transverse groove, the tactile protrusion or the guide seat deforms to avoid the other side.

4. The self-heating device with controllable injection according to claim 1, characterized in that, The inner edge of the adapter protrudes away from the screw hole to form a positioning ring, and the injection cylinder is inserted into the positioning ring; the positioning ring is provided with an axially open positioning notch, the circumferential sidewall of the positioning notch is provided with a snap-fit ​​part, and the injection cylinder is provided with a first snap-fit ​​post and a second snap-fit ​​post. During the process of inserting the injection barrel into the positioning ring, the first locking post and the second locking post are axially aligned with the locking part via the positioning notch, and the injection barrel rotates circumferentially in the second direction to achieve the engagement of the first locking post, the second locking post and the locking part.

5. The self-heating device with controllable injection according to claim 4, characterized in that, The first direction and the second direction are opposite.

6. The self-heating device with controllable injection according to claim 4, characterized in that, In the assembled position, the first locking post and the second locking post are located on both sides of the axial direction of the locking part. When the driving cylinder moves in the first direction, the deformation trend of the first locking post is opposite to that of the second locking post.

7. The self-heating device with controllable injection according to claim 1, characterized in that, The anti-diffusion valve includes at least two sets of valve plates, each set of valve plates including elastic sealing plates symmetrically arranged in the injection port, and the valve plates of each set are arranged sequentially in the axial direction of the injection port.

8. The self-heating device with controllable injection according to claim 1, characterized in that, The heating tube is connected to an exhaust pipe at one end near the injection port, and the other end of the exhaust pipe passes through the adapter cover to form an exhaust port. An anti-overflow component that only allows gas to pass through is provided inside the exhaust pipe.

9. The self-heating device with controllable injection according to claim 8, characterized in that, The self-heating device also includes a protective cylinder, the opening of which cooperates with the adapter cover to accommodate the injection cylinder and the push assembly. A sealing baffle is provided at the opening of the protective cylinder. When the protective cylinder and the adapter cover are assembled, the sealing baffle closes the exhaust port.

10. A self-heating container, characterized in that, It includes the bottle body and the self-heating device according to any one of claims 1 to 9.

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