Heating device applied to oxygen generation molecular sieve and oxygen generator thereof

Abstract

The heating device comprises a device body, the device body comprises a molecular sieve cylinder, a heating component and a heating component, the molecular sieve cylinder is provided with a containing cavity for containing the molecular sieve and the heating component, and the heating component is arranged in the containing cavity. The upper end cover assembly is arranged at one end part of the molecular sieve cylinder; the lower end cover assembly is arranged at the end, away from the upper end cover assembly, of the molecular sieve cylinder, the heating assembly is fixedly connected with the lower end cover assembly, and a heating assembly connector is exposed on the end face of the lower end cover assembly; the heating assembly connector is connected with a power source so that the heating assembly can emit heat to increase the temperature of the molecular sieve. The working temperature of the molecular sieve under the low-temperature working condition is increased in a heating manner, so that the oxygen production efficiency is improved; meanwhile, the heating rod can be quickly replaced from the outside, the whole molecular sieve cylinder does not need to be disassembled, and later maintenance and replacement are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen generation equipment, in particular to a heating device applied to oxygen generation molecular sieve and an oxygen generator thereof. Background Art

[0002] At present, most oxygen generators use the principle of pressure swing adsorption of molecular sieve to generate oxygen. Refer to Figure 1 , the oxygen generator sucks air from the cabin, the introduced air is filtered by a high-efficiency filter, compressed by an air compressor and then enters a heat exchanger to dissipate heat and cool down, and then enters the molecular sieve bed through an electromagnetic valve. The molecular sieve bed adopts pressure swing adsorption technology, and uses the characteristics of high-pressure adsorption and normal-pressure desorption of the molecular sieve to adsorb nitrogen in the air, and oxygen flows out of the molecular sieve bed and is stored in an oxygen storage tank. The produced oxygen is discharged from the oxygen outlet after decompression.

[0003] When the ambient temperature is relatively low, the adsorption rate of the molecular sieve decreases, resulting in poor efficiency of the molecular sieve, thus affecting the oxygen generation efficiency. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: how to increase the working temperature of the molecular sieve to improve the oxygen generation efficiency under low-temperature working conditions.

[0005] To solve the above technical problem, the utility model provides a heating device applied to oxygen generation molecular sieve, including a device body, and the device body includes:

[0006] A molecular sieve cylinder body, having a receiving cavity for receiving a molecular sieve and a heating component;

[0007] An upper end cover assembly, arranged at one end of the molecular sieve cylinder body; and

[0008] A lower end cover assembly, arranged at the end of the molecular sieve cylinder body far from the upper end cover assembly. The heating component is fixedly connected with the lower end cover assembly, and a heating component joint is exposed on the end face of the lower end cover assembly. When the heating component joint is electrified, the heating component can generate heat to increase the temperature of the molecular sieve.

[0009] Further, the heating component includes a heating rod and a heat-conducting inner tube, and the heat-conducting inner tube is sleeved on the heating rod and is located inside the receiving cavity.

[0010] Further, the lower end cover assembly includes a lower end cover, and a lower end cover gasket and a lower pressing plate are further arranged on the contact surface between the lower end cover and the end of the molecular sieve cylinder body.

[0011] Further, a first gasket groove matching with the lower end cover gasket is arranged on the surface of the lower end cover facing the molecular sieve cylinder body, and the lower end cover gasket is placed inside the first gasket groove.

[0012] Further, a relief hole is formed on the surface of the lower end cover for the heating rod to freely enter and exit.

[0013] Further, the lower pressing plate is in contact and fixed with the end face of the molecular sieve cylinder body; the heat-conducting inner pipe is hermetically fixed with the lower pressing plate.

[0014] Further, the upper end cover assembly includes an upper end cover, an upper end cover gasket, and an upper pressing plate; wherein, a second gasket groove matching with the upper end cover gasket is arranged on one side of the upper end cover facing the molecular sieve cylinder body, and the upper end cover gasket is placed in the second gasket groove.

[0015] Further, the upper pressing plate is placed in the molecular sieve cylinder body and has a gap with the heat-conducting inner pipe.

[0016] Further, a spring is arranged between the upper pressing plate and the upper end cover.

[0017] An oxygen generator, further comprising the heating device applied to the oxygen-making molecular sieve as described above.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model improves the working temperature of the molecular sieve under low-temperature conditions by heating, thereby improving the oxygen-making efficiency; at the same time, the heating rod of the utility model can be quickly replaced from the outside, without disassembling the whole molecular sieve cylinder, which is convenient for later maintenance and replacement. Description of the Drawings

[0020] Figure 1 It is a block diagram of the oxygen-making principle of the existing oxygen generator;

[0021] Figure 2 It is a schematic diagram of the overall structure disclosed in the embodiment of the utility model;

[0022] Figure 3 It is a cross-sectional view disclosed in the embodiment of the utility model;

[0023] Figure 4 It is an exploded view disclosed in the embodiment of the utility model.

[0024] In the figure:

[0025] 00, device body;

[0026] 10, upper end cover assembly; 11, upper end cover; 12, upper end cover gasket; 13, spring; 14, upper pressing plate;

[0027] 20, molecular sieve cylinder body; 21, accommodation cavity;

[0028] 30. Lower end cover assembly; 31. Lower end cover; 310. Relief hole; 32. Lower end cover gasket; 33. Lower pressing plate;

[0029] 40. Heating assembly; 41. Heating rod; 42. Heat-conducting inner tube. Detailed implementation manner

[0030] To make the technical solutions and technical effects of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments.

[0031] The present utility model aims to provide a heating device applied to oxygen-making molecular sieve, which is used to solve the problem of low oxygen-making efficiency of molecular sieve under low-temperature working conditions. It mainly includes a device body 00. Refer to Figure 2 , the device body 00 includes an upper end cover assembly 10, a molecular sieve cylinder 20 and a lower end cover assembly 30. Among them, the molecular sieve cylinder 20 has a receiving cavity 21 for receiving molecular sieve and a heating assembly 40; the upper end cover assembly 10 is arranged at one end of the molecular sieve cylinder 20; the lower end cover assembly 30 is arranged at the end of the molecular sieve cylinder 20 far from the upper end cover assembly 10. The heating assembly 40 is fixedly connected to the lower end cover assembly 30, and a heating assembly connector is exposed on the end face of the lower end cover assembly 30. Connecting the heating assembly connector to a power source can make the heating assembly 40 generate heat to increase the temperature of the molecular sieve. The following is a specific introduction to it. Refer to Figures 3-4 :

[0032] Heating assembly 40: The heating assembly 40 includes a heating rod 41 and a heat-conducting inner tube 42. The heat-conducting inner tube 42 is sleeved on the heating rod 41 and is located inside the receiving cavity 21. Preferably, the heating rod 41 is located at the center of the molecular sieve, and it can uniformly heat around the heating rod 41 as the center, so as to achieve the purpose of efficient temperature rise. The heating rod 41 can be quickly replaced from the outside, which is convenient for later maintenance and replacement without disassembling the entire molecular sieve cylinder 20. The heating assembly 40 needs to be connected to a power source and a control system to adjust the magnitude of the current and the energization time, so as to achieve precise control of the temperature of the heating rod 41. To ensure safety and extend the service life, the heating rod 41 is usually also equipped with protection devices, such as overheat protection, short-circuit protection, etc., which will not be elaborated here.

[0033] Lower end cover assembly 30: The lower end cover assembly 30 includes a lower end cover 31, a lower end cover gasket 32 ​​and a lower pressure plate 33; wherein the lower pressure plate 33 is arranged at the contact surface between the lower end cover 31 and the end of the molecular sieve cylinder 20. A first sealing gasket groove that matches the lower end cover gasket 32 ​​is arranged on the side of the lower end cover 31 facing the molecular sieve cylinder 20, and the lower end cover gasket 32 ​​is built into the first sealing gasket groove. A clearance hole 310 is opened on the surface of the lower end cover 31 to allow the heating rod 41 to enter and exit freely. The lower pressure plate 33 is fixed in contact with the end surface of the molecular sieve cylinder 20; the heat-conducting inner tube 42 is sealed and fixed to the lower pressure plate 33.

[0034] Molecular sieve cylinder 20: The embodiment of the utility model shows two towers of molecular sieves, which are placed side by side in the accommodating chamber 21 of the molecular sieve cylinder 20. In theory, the heating device provided by the utility model is also applicable to molecular sieve oxygen production devices with more than two towers. The upper end cover assembly 10 and the lower end cover assembly 30 are respectively sealed and fastened to the molecular sieve cylinder 20 by bolts.

[0035] Upper end cover assembly 10: The upper end cover assembly 10 includes an upper end cover 11, an upper end cover gasket 12 and an upper pressure plate 14; wherein, a second gasket groove that matches the upper end cover gasket 12 is provided on one side of the upper end cover 11 facing the molecular sieve cylinder 20, and the upper end cover gasket 12 is built into the second gasket groove. The upper pressure plate 14 is built into the molecular sieve cylinder 20 and leaves a gap with the heat-conducting inner tube 42. A spring 13 is provided between the upper pressure plate 14 and the upper end cover 11. The advantage of such a design is that the molecular sieve in the molecular sieve cylinder 20 is maintained in a compressed state, and at the same time, it can adapt to the expansion or contraction of the molecular sieve in the molecular sieve cylinder 20 that may be caused by adsorption and desorption.

[0036] When installing:

[0037] 1. Install the lower cover plate gasket 32 ​​into the first gasket groove on the inner side of the lower end cover 31; then fix the heat-conducting inner tube 42 to the inner side of the lower end cover 31; and then fix the lower pressure plate 33 to the molecular sieve cylinder 20 to complete the sealing and fixing of the lower end cover assembly 30 and the molecular sieve cylinder 20;

[0038] 2. Fill the molecular sieve from the end of the molecular sieve cylinder 20 away from the lower end cover assembly 30;

[0039] 3. After filling, press the upper pressing plate 14 into the molecular sieve cylinder 20, and then place the spring 13 on the upper pressing plate 14; then install the upper end cover gasket 12 into the second gasket groove on the inner side of the upper end cover 11; and fix it together with the molecular sieve cylinder 20 to complete the sealing fixation of the upper end cover assembly 10 and the molecular sieve cylinder 20;

[0040] 4. Fix the heating rod 41 to the lower end cover 31 , and install the main body of the heating rod 41 in the heat-conducting inner tube 42 through the clearance hole 310 of the lower end cover 31 .

[0041] The present utility model also protects an oxygen generator, which includes the heating device applied to the oxygen-making molecular sieve as described above.

[0042] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A heating device applied to an oxygen-making molecular sieve, comprising a device body (00), characterized in that, The device body (00) includes: A molecular sieve cylinder (20) having a receiving cavity (21) for receiving a molecular sieve and a heating component (40); An upper end cover assembly (10) provided at one end of the molecular sieve cylinder (20); and A lower end cover assembly (30) provided at the end of the molecular sieve cylinder (20) remote from the upper end cover assembly (10), the heating component (40) is fixedly connected to the lower end cover assembly (30) and a heating component connector is exposed on the end face of the lower end cover assembly (30), and connecting the heating component connector to a power source can cause the heating component (40) to generate heat to raise the temperature of the molecular sieve.

2. The heating device applied to the oxygen-making molecular sieve according to claim 1, wherein The heating component (40) includes a heating rod (41) and a heat-conducting inner tube (42), and the heat-conducting inner tube (42) is sleeved on the heating rod (41) and is located inside the receiving cavity (21).

3. The heating device applied to the oxygen production molecular sieve according to claim 2, characterized in that, The lower end cover assembly (30) includes a lower end cover (31), and a lower end cover gasket (32) and a lower pressing plate (33) are further provided on the contact surface of the lower end cover (31) with the end of the molecular sieve cylinder (20).

4. The heating device applied to the oxygen production molecular sieve according to claim 3, characterized in that, A first gasket groove that matches the lower end cover gasket (32) is provided on the side of the lower end cover (31) facing the molecular sieve cylinder (20), and the lower end cover gasket (32) is placed inside the first gasket groove.

5. The heating device applied to the oxygen-making molecular sieve according to claim 3, characterized in that, A relief hole (310) is provided on the surface of the lower end cover (31) for the heating rod (41) to freely enter and exit.

6. The heating device applied to the oxygen-making molecular sieve according to claim 3, characterized in that, The lower pressing plate (33) is in contact and fixed with the end face of the molecular sieve cylinder (20); the heat-conducting inner tube (42) is hermetically fixed with the lower pressing plate (33).

7. The heating device applied to the oxygen production molecular sieve according to claim 2, characterized in that, The upper end cover assembly (10) includes an upper end cover (11), an upper end cover gasket (12) and an upper pressing plate (14); wherein, a second gasket groove that matches the upper end cover gasket (12) is provided on the side of the upper end cover (11) facing the molecular sieve cylinder (20), and the upper end cover gasket (12) is placed inside the second gasket groove.

8. The heating device applied to the oxygen-making molecular sieve according to claim 7, characterized in that, The upper pressing plate (14) is placed inside the molecular sieve cylinder (20) and has a gap with the heat-conducting inner tube (42).

9. The heating device applied to the oxygen-making molecular sieve according to claim 7, characterized in that A spring (13) is provided between the upper pressing plate (14) and the upper end cover (11).

10. An oxygen generator, characterized in that, A heating device for an oxygen-producing molecular sieve according to any one of claims 1-9.

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