Pressure relief structure of thermos flask

Abstract

The utility model discloses a thermos kettle pressure relief structure which comprises a thermos kettle body, the upper end face of the thermos kettle body is in threaded connection with a kettle cover, an air leakage box is fixedly connected in the kettle cover, an air leakage hole is formed in the lower end face of the air leakage box, and a first spring is fixedly connected in the air leakage box. By arranging the air leakage box and the ventilation box, when the heat preservation kettle is used, after hot water is poured into the heat preservation kettle body, internal high pressure can be released through an air leakage hole of the pressure release box and discharged through a first ventilation hole, so that a stable air pressure structure is formed in the kettle; however, after hot water in the thermos kettle body is slowly cooled under the influence of various factors, negative pressure is formed in the thermos kettle body, then air is sucked in through a second air hole piece in the ventilation box, a stable air pressure structure is formed in the thermos kettle again, and the situation that the thermos kettle body is difficult to open due to the high pressure or negative pressure in the thermos kettle body is prevented. The use feeling is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of thermos pots, in particular to a pressure relief structure for thermos pots. Background Art

[0002] Patent No. CN219048152U discloses a thermos pot with a pressure relief structure. The utility model has a reasonable structural design. When the pressure inside the thermos pot is greater than the elastic force of the elastic telescopic part, the high-pressure gas pushes the sealing ball so that it no longer blocks the upper port of the sealing inner cylinder. The high pressure inside the thermos pot can be discharged through the inner cylinder of the pressure relief hole, avoiding the rapid dissipation of high-temperature water vapor inside the thermos pot when the thermos cover is opened. When the pressure inside the thermos pot drops to less than the elastic force of the elastic telescopic part, the sealing ball blocks the upper port of the sealing inner cylinder under the pull of the elastic telescopic part.

[0003] However, when the thermos pot is filled with hot water, the internal high pressure can be released through the inner cylinder of the pressure relief hole to form a stable air pressure structure in the pot. However, the hot water in the thermos pot is slowly cooled down by various factors, which will cause negative pressure to form in the thermos pot, making it difficult to open the thermos pot, affecting the user experience.

[0004] In order to solve the above problems, the utility model provides a pressure relief structure for a thermos pot. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a pressure relief structure for a thermos pot to solve the technical problem in the prior art that "when in use, after the thermos pot is filled with hot water, the internal high pressure can be released through the inner cylinder of the pressure relief hole to form a stable air pressure structure in the pot, but the hot water in the thermos pot is slowly cooled down by various factors, which will cause negative pressure to form in the thermos pot, making the thermos pot difficult to open, affecting the user experience."

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a pressure relief structure for a thermos pot, comprising a thermos pot body, the upper end surface of the thermos pot body is threadedly connected to a pot lid, an air relief box is fixedly connected inside the pot lid, an air relief hole is provided on the lower end surface of the air relief box, a first spring is fixedly connected inside the air relief box, a first abutment block is fixedly connected to the bottom end of the first spring, a side wall of the first abutment block is slidably connected to the inner wall of the air relief box, a vent box is fixedly connected inside the pot lid, a vent hole is provided on the lower end surface of the vent box, a second spring is connected inside the vent box, a second abutment block is fixedly connected to the bottom end of the second spring, and the second abutment block is slidably connected in the vent hole.

[0007] As a preferred technical solution of the utility model, the upper end surface of the pot lid is provided with a first air hole and a second air hole, the first air hole penetrates the upper end surface of the air leak box and is connected to the inside of the air leak box, the second air hole penetrates the upper end surface of the air vent box and is connected to the inside of the air vent box, and the first air hole and the second air hole are both provided with breathable dust blocks.

[0008] As a preferred technical solution of the utility model, the lower end surface of the first abutment block is fixedly connected with a first sealing ring, the upper end surface of the second abutment block is fixedly connected with a second sealing ring, and the inner wall of the pot cover is fixedly connected with a third sealing ring.

[0009] As a preferred technical solution of the utility model, the shapes of the deflation box and the ventilation box are both C-shaped, and the opposite sides of the deflation box and the ventilation box are fixedly connected with a threaded sleeve, and the inner thread of the threaded sleeve is connected with a tea strainer.

[0010] As a preferred technical solution of the utility model, a protective sleeve is slidably sleeved on the side wall of the thermos pot body, and two connecting blocks are fixedly connected to the upper end surface of the protective sleeve.

[0011] As a preferred technical solution of the utility model, connecting holes are provided in the two connecting blocks, and shoulder straps are provided in the two connecting holes.

[0012] The utility model provides a pressure relief structure for a thermos pot, which has the following beneficial effects:

[0013] 1. By setting up an air leak box and a vent box, when in use, after the thermos pot body is filled with hot water, the internal high pressure can be leaked through the air leak hole of the pressure relief box and discharged from the first air hole, so that a stable air pressure structure is formed in the pot. However, the hot water in the thermos pot body is slowly cooled down due to various factors, resulting in negative pressure in the thermos pot body. Then, gas is sucked in from the second air hole in the vent box, so that a stable air pressure structure is formed in the pot again, thereby preventing the occurrence of high pressure or negative pressure in the thermos pot body, making the thermos pot body difficult to open and affecting the user experience.

[0014] 2. By providing a shoulder strap, it is convenient for users to take it, which has a certain convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a pressure relief structure for a thermos pot proposed by the utility model;

[0016] Figure 2 A schematic diagram of a pot cover structure of a heat preservation pot pressure relief structure proposed by the utility model;

[0017] Figure 3 It is a schematic diagram of the side cross-sectional structure of the air release box of the pressure release structure of the thermos pot proposed by the utility model;

[0018] Figure 4 The utility model discloses a side sectional structural schematic diagram of a vent box of a pressure relief structure for a thermos pot.

[0019] In the figure: 1 thermos pot body, 2 pot cover, 3 air release box, 4 ventilation box, 5 threaded sleeve, 6 tea strainer, 7 first spring, 8 first abutment block, 9 air release hole, 10 first ventilation hole, 11 second spring, 12 second abutment block, 13 second ventilation hole, 14 protective cover, 15 connecting block, 16 shoulder strap. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] refer to Figure 1-4 The utility model provides a technical solution: a pressure relief structure of a thermos pot, comprising a thermos pot body 1, a pot cover 2 is threadedly connected to the upper end surface of the thermos pot body 1, a degassing box 3 is fixedly connected inside the pot cover 2, a degassing hole 9 is opened on the lower end surface of the degassing box 3, a first spring 7 is fixedly connected inside the degassing box 3, a first abutting block 8 is fixedly connected to the bottom end of the first spring 7, a side wall of the first abutting block 8 is slidably connected to the inner wall of the degassing box 3, a vent box 4 is fixedly connected inside the pot cover 2, a vent hole is opened on the lower end surface of the vent box 4, a second spring 11 is connected inside the vent box 4, a second abutting block 12 is fixedly connected to the bottom end of the second spring 11, and the second abutting block 12 is slidably connected in the vent hole.

[0022] Among them, the upper end surface of the pot cover 2 is provided with a first air hole 10 and a second air hole 13. The first air hole 10 passes through the upper end surface of the air leaking box 3 and is connected with the inside of the air leaking box 3. The second air hole 13 passes through the upper end surface of the air venting box 4 and is connected with the inside of the air venting box 4. Both the first air hole 10 and the second air hole 13 are provided with breathable dustproof blocks.

[0023] The lower end surface of the first abutting block 8 is fixedly connected with a first sealing ring, the upper end surface of the second abutting block 12 is fixedly connected with a second sealing ring, and the inner wall of the pot cover 2 is fixedly connected with a third sealing ring.

[0024] Among them, the shape of the air deflation box 3 and the ventilation box 4 are both C-shaped, and the opposite side of the air deflation box 3 and the ventilation box 4 is fixedly connected with a threaded sleeve 5, and the inner thread of the threaded sleeve 5 is connected with a tea strainer 6. By setting the tea strainer 6, tea leaves and the like are collected.

[0025] The side wall of the thermos pot body 1 is slidably sleeved with a protective sleeve 14 , and the upper end surface of the protective sleeve 14 is fixedly connected with two connecting blocks 15 .

[0026] The two connection blocks 15 are provided with connection holes, and the two connection holes are provided with shoulder straps 16 . The shoulder straps 16 are provided to facilitate users to take the device, which is convenient to a certain extent.

[0027] The working principle of the utility model is as follows: when in use, the user puts hot water in the thermos pot body 1. Due to the water vapor, the heat preservation cavity formed by the thermos pot body 1 and the pot cover 2 reaches a high pressure environment. When the pressure in the thermos pot body 1 is increased to be greater than the elastic force of the first spring 7, the high-pressure gas pushes the first abutment block 8 so that it no longer blocks the upper end of the air leakage hole 9. The high pressure inside the thermos pot body 1 can be discharged from the first air vent 10 after the air leakage hole 9, so as to avoid the rapid dissipation of high-temperature and high-pressure water vapor inside the thermos pot body 1 when the pot cover 2 is opened, thereby causing a scalding hazard to the person pouring the water. When the pressure inside the thermos pot body 1 drops to less than the elastic force of the first spring 7, the high-pressure gas pushes the first abutment block 8 so that it no longer blocks the upper end of the air leakage hole 9. The high pressure inside the thermos pot body 1 can be discharged from the first air vent 10 after the air leakage hole 9, so as to avoid the rapid dissipation of high-temperature and high-pressure water vapor inside the thermos pot body 1 when the pot cover 2 is opened, thereby causing a stable condition in which the person pouring the water can be easily scalded. When the pressure inside the thermos pot body 1 is increased to be greater than the elastic force of the second spring 11, the negative pressure gas pushes the second abutment block 12 so that it no longer blocks the vent hole. The negative pressure inside the thermos pot body 1 can inhale the gas through the second vent hole 13 to form a pressure balance. By setting the thermos pot body 1, the occurrence of high pressure or negative pressure in the thermos pot body 1 can be prevented, which makes the thermos pot body 1 difficult to open and affects the user experience.

[0028] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and utility model concept of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model.

Claims

1. A pressure relief structure for a thermos pot, comprising a thermos pot body (1), characterized in that: The upper end surface of the thermos pot body (1) is threadedly connected to a pot cover (2), a degassing box (3) is fixedly connected inside the pot cover (2), a degassing hole (9) is provided on the lower end surface of the degassing box (3), a first spring (7) is fixedly connected inside the degassing box (3), a first abutting block (8) is fixedly connected to the bottom end of the first spring (7), a side wall of the first abutting block (8) is slidably connected to the inner wall of the degassing box (3), a venting box (4) is fixedly connected inside the pot cover (2), a venting hole is provided on the lower end surface of the venting box (4), a second spring (11) is connected inside the venting box (4), a second abutting block (12) is fixedly connected to the bottom end of the second spring (11), and the second abutting block (12) is slidably connected in the venting hole.

2. A pressure relief structure for a thermos pot according to claim 1, characterized in that: The upper end surface of the pot cover (2) is provided with a first air vent (10) and a second air vent (13); the first air vent (10) passes through the upper end surface of the air leak box (3) and is connected to the inside of the air leak box (3); the second air vent (13) passes through the upper end surface of the ventilation box (4) and is connected to the inside of the ventilation box (4); and air-permeable dust-proof blocks are provided in the first air vent (10) and the second air vent (13).

3. A pressure relief structure for a thermos pot according to claim 1, characterized in that: The lower end surface of the first abutment block (8) is fixedly connected to a first sealing ring, the upper end surface of the second abutment block (12) is fixedly connected to a second sealing ring, and the inner wall of the pot cover (2) is fixedly connected to a third sealing ring.

4. A pressure relief structure for a thermos pot according to claim 1, characterized in that: The air leak box (3) and the ventilation box (4) are both C-shaped, and a threaded sleeve (5) is fixedly connected to the opposite side of the air leak box (3) and the ventilation box (4), and the inner thread of the threaded sleeve (5) is connected to a tea strainer (6).

5. The pressure relief structure of a thermos pot according to claim 1, characterized in that: A protective sleeve (14) is slidably sleeved on the side wall of the thermos pot body (1), and two connecting blocks (15) are fixedly connected to the upper end surface of the protective sleeve (14).

6. A pressure relief structure for a thermos pot according to claim 5, characterized in that: The two connection blocks (15) are provided with connection holes, and the two connection holes are provided with shoulder straps (16) in common.

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