Pressure relief kettle

Abstract

The utility model relates to a pressure relief kettle which comprises a kettle body, a connecting cover body, a waterproof breathable film, an exhaust cover body and an elastic pressure relief structure. The connecting cover body is connected with the opening of the kettle body in a sealing manner, and a first pressure discharge hole and a first pressure relief hole are formed in the connecting cover body in a penetrating manner; the exhaust cover body is arranged on the connecting cover body, and a second pressure discharge hole and a second pressure relief hole are formed in the exhaust cover body in a penetrating manner; the elastic pressure relief mechanism is arranged in the first pressure relief hole; wherein the first pressure discharge hole and the first pressure relief hole are communicated with the kettle body, the first pressure discharge hole is communicated with the second pressure discharge hole, and the first pressure relief hole is communicated with the second pressure relief hole; a waterproof breathable film is arranged between the first pressure relief hole and the second pressure relief hole. Through the arrangement of the first pressure discharge hole, the second pressure discharge hole, the first pressure relief hole and the second pressure relief hole, steam in the kettle body is discharged in a layered mode.

Description

Technical Field

[0001] The utility model relates to the technical field of kettles, in particular to a pressure relief kettle. Background Art

[0002] When heating water, a kettle generates high internal pressure. If the kettle has good insulation function but does not have an effective pressure relief mechanism, the internal pressure may be too high, increasing safety risks.

[0003] Existing kettles have an exhaust channel on the lid to release steam and relieve pressure. However, a single exhaust channel cannot accommodate varying pressures. If the exhaust channel vents too slowly, the pressure inside the kettle will increase. Excessive pressure may cause the kettle to explode or leak, resulting in burns or other safety hazards. If the exhaust channel vents too quickly, heat will also be lost quickly, affecting the insulation effect. In other words, it is difficult to achieve effective pressure relief while maintaining heat preservation.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a pressure relief kettle to balance the heat preservation and pressure relief functions of the kettle.

[0006] The technical solution of the utility model is as follows:

[0007] A pressure-relieving kettle, comprising: a kettle body; a connecting cover body, sealingly connected to the opening of the kettle body, the connecting cover body being provided with a first pressure-relieving hole and a first pressure-relieving hole; an exhaust cover body, arranged on the connecting cover body, the exhaust cover body being provided with a second pressure-relieving hole and a second pressure-relieving hole; an elastic pressure-relieving mechanism, arranged in the first pressure-relieving hole; wherein, the first pressure-relieving hole and the first pressure-relieving hole are connected to the kettle body, the first pressure-relieving hole is connected to the second pressure-relieving hole, and the first pressure-relieving hole is connected to the second pressure-relieving hole; a waterproof and breathable membrane is provided between the first pressure-relieving hole and the second pressure-relieving hole.

[0008] A further technical solution is that the elastic pressure relief mechanism includes a plug and an elastic member, the plug is close to the kettle body, the elastic member is arranged between the exhaust cover and the plug, and the elastic member is in a compressed state.

[0009] A further technical solution is that the first pressure relief hole is close to one side of the kettle body and has a smaller hole diameter; the second pressure relief hole is a stepped hole, and the elastic member contacts the stepped hole wall of the second pressure relief hole.

[0010] Its further technical solution is that it also includes a first card cover, the upper surface of the exhaust cover body is provided with an exhaust groove, and the first card cover is arranged in the exhaust groove; an air hole is opened through the first card cover, and the air hole is connected to the second pressure relief hole and the second pressure discharge hole.

[0011] A further technical solution is that a snap-on protrusion is provided on the inner wall of the exhaust groove, and a snap-on groove is provided on the outer side of the first card cover for the snap-on protrusion to be snapped into.

[0012] A further technical solution is that it further includes a second card cover, which is sealed and connected to the lower part of the connecting cover body, and the air holes on the second card cover are connected to the first pressure-discharging hole and the second pressure-discharging hole to form an airway.

[0013] A further technical solution is that the first row of pressure holes consists of at least two small holes.

[0014] A further technical solution is that it also includes a fastener, which passes through and connects the exhaust cover and the connecting cover; the outer surface of the connecting cover is provided with threads, and the connecting cover is connected to the kettle body through threads.

[0015] A further technical solution is that the exhaust cover is provided with a first extension portion extending upward, at least two first extension portions are provided, and the first extension portions are arranged at intervals around the second pressure discharge hole.

[0016] Its further technical solution is that a second extension portion is provided on the lower surface of the first card cover, and the second extension portion is provided corresponding to the gap between adjacent first extension portions. The circumferential direction of the first card cover is adjusted relative to the exhaust cover body, and the first extension portion and the second extension portion can cooperate to form a circular ring; at this time, the air hole on the first card cover is opened on the outside of the circular ring.

[0017] The beneficial technical effects of the utility model are as follows:

[0018] (1) The pressure relief kettle in the present invention is provided with a connecting cover and an exhaust cover on the kettle body. The connecting cover and the exhaust cover are provided with a first pressure discharge hole and a second pressure discharge hole that are connected. The first pressure discharge hole and the second pressure discharge hole are combined to form a pressure discharge channel to discharge the steam in the kettle body, reduce the pressure in the kettle body, and avoid the safety hazard caused by excessive pressure in the kettle body. At the same time, the connecting cover and the exhaust cover are also provided with a first pressure relief hole and a second pressure relief hole, and an elastic pressure relief structure is provided. When the pressure in the kettle body is relatively large, the elastic force of the elastic pressure relief mechanism is overcome, so that the first pressure relief hole is connected to the kettle body and the second pressure relief hole before exhausting the air, avoiding the pressure reduction speed of the pressure discharge channel being too slow to discharge the steam in the kettle body in time. In this way, the first pressure discharge hole and the second pressure relief hole discharge the steam in the kettle body in layers, ensuring that the kettle body has a better heat preservation effect when the pressure is low, and can discharge the steam in the kettle body in time to reduce the pressure in the kettle body when the pressure is high.

[0019] (2) Furthermore, the first pressure relief hole is located near one side of the kettle body, and its diameter is reduced, so that when the plug is pushed by the pressure inside the kettle body, it moves slightly, leaving a gap between the plug and the first pressure relief hole to discharge steam. The greater the pressure inside the kettle body, the greater the amplitude of the plug's movement, and the larger the gap between the plug and the first pressure relief hole, so that the steam inside the kettle body can be discharged more quickly.

[0020] (3) Furthermore, first extensions are provided at intervals on the exhaust cover body to support the first card cover. At the same time, second extensions are provided on the first card cover corresponding to the gaps between adjacent first extensions. By rotating the first card cover, the first extension and the second extension can form a circular ring surrounding the openings of the second row of pressure holes. At this time, the air holes on the first card cover are opened on the outside of the circular ring, that is, the circular ring formed by the first extension and the second extension can separate the second row of pressure holes and the air holes, and the second row of pressure holes no longer discharges steam. Until the air pressure in the kettle body increases to push the plug, the kettle body is completely sealed, thereby improving the heat preservation effect of the kettle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure shows a three-dimensional structural diagram of a pressure relief kettle in the first embodiment of the present invention.

[0022] Figure 2 The figure shows a schematic diagram of the three-dimensional structure of the pressure relief kettle in the first embodiment of the present invention with the kettle body hidden.

[0023] Figure 3 The diagram shows a vertical cross-sectional view of the pressure relief kettle in the first embodiment of the present invention with the kettle body hidden.

[0024] Figure 4 It shows a schematic structural diagram of the exhaust cover and the first latch cover in the pressure relief kettle in the second embodiment of the present utility model.

[0025] In the accompanying drawings:

[0026] 1. Kettle body; 2. Connecting cover; 21. First row of pressure holes; 22. First pressure relief hole; 3. Waterproof breathable membrane; 4. Exhaust cover; 41. Exhaust groove; 42. Snap-on protrusion; 43. Second row of pressure holes; 44. Second pressure relief hole; 45. First extension; 5. Elastic pressure relief mechanism; 51. Elastic member; 52. Plug; 6. First card cover; 61. Air hole; 62. Snap-on groove; 63. Second extension; 7. Second card cover; 8. Fastener; 9. Thread. DETAILED DESCRIPTION

[0027] To make the purposes, features, and advantages of this utility model more clearly understood, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology. They are not intended to limit the conditions for the implementation of this utility model and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, as long as they do not affect the efficacy and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0028] In the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are defined as indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0029] Example 1

[0030] Figure 1 The figure shows a three-dimensional structural diagram of a pressure relief kettle in the first embodiment of the present invention. Figure 2 The figure shows a schematic diagram of the three-dimensional structure of the pressure relief kettle after the kettle body is hidden in the first embodiment of the present invention. Figure 1 and Figure 2, a pressure relief kettle, comprising a kettle body 1, a connecting cover body 2, a waterproof breathable membrane 3, an exhaust cover body 4 and an elastic pressure relief mechanism 5. The connecting cover body 2 seals the opening of the kettle body 1, and the connecting cover body 2 is provided with a first pressure relief hole 21 and a first pressure relief hole 22. The waterproof breathable membrane 3 is arranged on the connecting cover body 2, and the waterproof breathable membrane 3 covers the opening of the first pressure relief hole 21. The exhaust cover body 4 is arranged on the connecting cover body 2, and the exhaust cover body 4 is provided with a second pressure relief hole 43 and a second pressure relief hole 44, and the first pressure relief hole 21 is connected to the second pressure relief hole 43. The first pressure relief hole 21 and the second pressure relief hole 43 are combined to form a pressure relief channel, which discharges the steam in the kettle body 1, reduces the pressure in the kettle body 1, and avoids safety hazards caused by excessive pressure in the kettle body 1. The first pressure relief hole 22 is connected to the second pressure relief hole 44. The elastic pressure relief mechanism 5 is arranged in the first pressure relief hole 22. Among them, when the pressure in the kettle body 1 is relatively high, the elastic force of the elastic pressure relief mechanism 5 is overcome, so that the first pressure relief hole 22 is connected to the kettle body 1 and the second pressure relief hole 44, exhaust is performed, thereby preventing the pressure reduction speed of the pressure relief channel from being too slow to timely discharge the steam in the kettle body 1. In this way, the first pressure relief hole 21 and the second pressure relief hole 43, the first pressure relief hole 22 and the second pressure relief hole 44 discharge the steam in the kettle body 1 in layers, ensuring that the kettle body 1 has a good heat preservation effect when the pressure is low, and can timely discharge the steam in the kettle body 1 to reduce the pressure in the kettle body 1 when the pressure is high.

[0031] Furthermore, the elastic pressure relief mechanism 5 includes a plug 52 and an elastic member 51. The plug 52 is located near the kettle body 1, and the elastic member 51 is disposed between the exhaust cover 4 and the plug 52. The elastic member 51 is in a compressed state. When the pressure within the kettle body 1 is high enough to overcome the elastic force of the elastic member 51 and push the plug 52 to move, the first pressure relief hole 22 and the second pressure relief hole 44 are connected, allowing pressure relief.

[0032] Furthermore, two or more first pressure relief holes 22 can be provided on the connecting cover 2, and in this case, the same number of second pressure relief holes 44 can be provided on the exhaust cover 4. Each group of first pressure relief holes 22 and second pressure relief holes 44 is provided with an elastic pressure relief mechanism 5, and the elastic coefficients of the elastic members 51 in different elastic pressure relief mechanisms 5 can be different. That is, as the pressure in the kettle body 1 changes, the compression conditions of different elastic members 51 are different, so that different numbers of first pressure relief holes 22 are connected, thereby realizing multi-level pressure relief adjustment.

[0033] The specific structure of the exhaust cover 4 and the connection cover 2 is described below:

[0034] Figure 3 The vertical cross-sectional view of the pressure relief kettle without the kettle body in the first embodiment of the present invention is shown. Figure 1 and Figure 3The first pressure relief hole 22 is located on a side closer to the kettle body 1, with a reduced diameter. This allows the plug 52 to move at different distances within the reduced diameter portion of the first pressure relief hole 22, i.e., its position within the first pressure relief hole 22 is different. Consequently, the gap between the plug 52 and the first pressure relief hole 22 is also different, and thus the steam discharge rate is also different. As the pressure within the kettle body 1 increases, the distance the plug 52 is pushed to move increases, and the gap between the plug 52 and the first pressure relief hole 22 also increases. This increases the steam discharge rate along the first pressure relief hole 22, allowing the steam within the kettle body 1 to be discharged more quickly.

[0035] Furthermore, the second pressure relief hole 44 is a stepped hole, and the elastic member 51 contacts the stepped hole wall of the second pressure relief hole 44 to resist the plug 52. The first pressure relief hole 21 is composed of at least two small holes. By using at least two small holes instead of a single large hole, steam is discharged evenly, avoiding concentrated steam discharge that could cause localized high temperature or high pressure accumulation. Furthermore, multiple small holes can reduce the noise generated by steam discharge compared to a single large hole, as the impact force of steam flowing out of multiple small holes is relatively small.

[0036] Furthermore, the outer surface of the connecting cover 2 is provided with threads 9, which connect the connecting cover 2 to the kettle body 1 via the threads 9. The exhaust cover 4 is provided with a first extension portion 45 extending upward. There are at least two first extension portions 45, which are spaced apart around the second pressure relief hole 43. The first extension portions 45 can support the first latch 6. When the first latch 6 is squeezed by an external force, the first extension portions 45 provide effective support for the first latch 6, reducing the probability of damage caused by the external force.

[0037] The specific structures of the first card cover 6, the second card cover 7 and the fastener 8 are described below:

[0038] Please refer to Figure 2 , also includes a first card cover 6, an exhaust groove 41 is provided on the upper surface of the exhaust cover body 4, and the first card cover 6 is arranged in the exhaust groove 41. An air hole 61 is provided through the first card cover 6, and the air hole 61 is connected to the second pressure relief hole 44 and the second pressure relief hole 43. The first card cover 6 can protect the second pressure relief hole 44 and the second pressure relief hole 43, and it intercepts foreign matter to prevent foreign matter from contacting and clogging the second pressure relief hole 44 and the second pressure relief hole 43. A snap-on protrusion 42 is provided on the inner wall of the exhaust groove 41, and a snap-on groove 62 is provided on the outer side of the first card cover 6 for the snap-on protrusion 42 to be snapped into. The first card cover 6 and the exhaust cover body 4 are snapped together, which is convenient for disassembly and assembly, and for subsequent cleaning of the first card cover 6.

[0039] Furthermore, a second latch 7 is included, which is sealedly connected to the lower portion of the connecting cover body 2. The air hole 61 in the second latch 7 connects to the first pressure relief hole 21 and the second pressure relief hole 43, forming an air passage for steam to pass through. The second latch 7 has the same structure as the first latch 6, and the lower portion of the connecting cover body 2 is also provided with a bayonet protrusion to engage the second latch 7. The second latch 7 can intercept foreign matter, preventing it from contacting and blocking the second pressure relief hole 44 and the second pressure relief hole 43.

[0040] Furthermore, a fastener 8 is included, which passes through and connects the exhaust cover 4 and the connection cover 2. The fastener 8 can be a screw, a stud nut and a rivet.

[0041] The specific workflow of this utility model is as follows:

[0042] When the kettle heats water, steam is generated within the kettle body 1, increasing the pressure within the kettle body 1. During this process, steam is continuously discharged along the pores 61 of the second latch 7, the first pressure relief pores 21, the waterproof breathable membrane 3, the second pressure relief pores 43, and the pores 61 on the first latch 6, reducing the pressure within the kettle body 1. If the amount of steam discharged is less than the amount of steam generated, the pressure within the kettle body 1 continues to rise until the pressure within the kettle body 1 exceeds the elastic force of the elastic member 51 against the plug 52. At this point, the plug 52 is pushed by the pressure within the kettle body 1, forming a gap between the first pressure relief pore 22 and the plug 52. Steam continues to discharge along the pores 61 of the second latch 7, the gap within the first pressure relief pore 22, the second pressure relief pore 44, and the pores 61 on the first latch 6. During this process, if the pressure continues to rise, the further the plug 52 is pushed by the pressure, the larger the gap between the plug 52 and the first pressure relief pore 22, and the faster the steam is discharged through the first pressure relief pore 22. When the pressure inside the kettle body 1 is less than the elastic force of the elastic member 51 against the plug 52 , the first pressure relief hole 22 is blocked by the plug 52 and the steam is discharged only along the first pressure relief hole 21 .

[0043] Example 2

[0044] Figure 4 The diagram shows the structure of the exhaust cover and the first latch cover in the pressure relief kettle in the second embodiment of the present invention. Figure 4Based on the first embodiment, the second embodiment discloses a pressure relief kettle, wherein the lower surface of the first card cover 6 is provided with a second extension portion 63, and the gap between the second extension portion 63 and the adjacent first extension portion 45 is set. The circumferential direction of the first card cover 6 is adjusted relative to the exhaust cover body 4, and the first extension portion 45 and the second extension portion 63 can be staggered and matched with each other to form a ring. At this time, the air hole 61 on the first card cover 6 is opened on the outside of the ring. That is, the ring formed by the first extension portion 45 and the second extension portion 63 can separate the second pressure hole 43 and the air hole 61, and the second pressure hole 43 no longer discharges steam. Until the air pressure in the kettle body 1 rises and pushes the plug 52, the second pressure hole 43 no longer discharges steam. During this process, the steam in the kettle body 1 is no longer discharged, thereby improving the heat preservation effect of the liquid in the kettle body 1.

[0045] It can be seen that in the above-mentioned pressure relief kettle, the first pressure discharge hole 21 and the second pressure discharge hole 43, the first pressure relief hole 22 and the second pressure relief hole 44 discharge the steam in the kettle body 1 in layers, ensuring that the kettle body 1 has a better heat preservation effect at low pressure, and can discharge the steam in the kettle body 1 in time to reduce the pressure in the kettle body 1 at high pressure.

[0046] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A pressure relief kettle, characterized in that: include: Pot body; A connecting cover body is sealed and connected to the opening of the kettle body, and a first pressure discharge hole and a first pressure relief hole are formed through the connecting cover body; An exhaust cover body is provided on the connecting cover body, and a second pressure discharge hole and a second pressure relief hole are formed through the exhaust cover body; an elastic pressure relief mechanism, disposed in the first pressure relief hole; The first pressure relief hole and the first pressure relief hole are connected to the kettle body, the first pressure relief hole is connected to the second pressure relief hole, and the first pressure relief hole is connected to the second pressure relief hole; a waterproof and breathable membrane is provided between the first pressure relief hole and the second pressure relief hole.

2. The pressure relief kettle according to claim 1, wherein: The elastic pressure relief mechanism includes a plug and an elastic member, the plug is close to the kettle body, the elastic member is arranged between the exhaust cover and the plug, and the elastic member is in a compressed state.

3. The pressure relief kettle according to claim 2, wherein: The first pressure relief hole is close to one side of the kettle body, and its diameter is reduced; the second pressure relief hole is a stepped hole, and the elastic member contacts the stepped hole wall of the second pressure relief hole.

4. The pressure relief kettle according to claim 1, wherein: It also includes a first card cover, the upper surface of the exhaust cover body is provided with an exhaust groove, and the first card cover is arranged in the exhaust groove; an air hole is opened through the first card cover, and the air hole is connected to the second pressure relief hole and the second pressure discharge hole.

5. The pressure relief kettle according to claim 4, characterized in that: A snap-fit ​​protrusion is provided on the inner wall of the exhaust groove, and a snap-fit ​​groove for the snap-fit ​​protrusion to be snapped into is provided on the outer side of the first card cover.

6. The pressure relief kettle according to claim 1, wherein: The second card cover is also included. The second card cover is sealed and connected to the lower part of the connection cover body. The air hole on the second card cover is connected to the first pressure relief hole and the second pressure relief hole to form an air channel.

7. The pressure relief kettle according to claim 1, wherein: The first row of pressure holes consists of at least two small holes.

8. The pressure relief kettle according to claim 1, wherein: It also includes a fastener, which passes through and connects the exhaust cover and the connecting cover; the outer surface of the connecting cover is provided with threads, and the connecting cover is connected to the kettle body through the threads.

9. The pressure relief kettle according to claim 4, characterized in that: The exhaust cover body is upwardly extended to form a first extension portion, at least two first extension portions are provided, and the first extension portions are spaced apart around the second pressure discharge hole.

10. The pressure relief kettle according to claim 9, characterized in that: A second extension portion is provided on the lower surface of the first card cover, and the second extension portion is provided corresponding to the gap between adjacent first extension portions. The circumferential direction of the first card cover is adjusted relative to the exhaust cover body, and the first extension portion and the second extension portion can cooperate to form a circular ring; at this time, the air hole on the first card cover is opened on the outside of the circular ring.

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