Air inlet pipe head structure of oxygen generator and oxygen generator

Abstract

The utility model discloses an oxygen generator air inlet pipe head structure and an oxygen generator, comprising an air inlet pipe head connected between a filter cavity and a compressor air inlet pipe; the mounting groove is used for accommodating the filtering cavity; a first groove wall of the mounting groove is provided with a first avoiding opening for avoiding the air inlet pipe head; the air inlet pipe head is provided with a pipe head part and an installation plate arranged on the outer side of the pipe head part, an installation notch used for containing the installation plate is formed in the inner side of the first receding opening, and the installation plate is located in the installation notch. By arranging the air inlet pipe head structure, connection between the filter cavity and the compressor air inlet pipe is achieved, the structure is compact, and installation and fixation are firm. The filter cavity is located in the mounting groove, so that the filter cavity is convenient to mount; the mounting plate and the mounting notch are arranged, so that the air inlet pipe head is limited in the mounting groove, the air inlet pipe head is limited, and the two ends of the air inlet pipe head are connected with the filter cavity and the air inlet pipe, so that the air inlet pipe head is firmly mounted and fixed.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen generators, and particularly relates to an air inlet pipe head structure of an oxygen generator and an oxygen generator with the air inlet pipe head structure. Background Art

[0002] An oxygen generator is a device that can extract oxygen from the air. It is mainly applied in the medical field to provide high-purity oxygen for patients in need of additional oxygen supply. Molecular sieve oxygen generators are currently commonly used, and two molecular sieves respectively perform the same cycle process to achieve continuous air supply. The working process is as follows: Raw air is pressurized by a compressor, and then the processed compressed air enters the molecular sieve through an intake valve. In the molecular sieve, nitrogen, carbon dioxide, etc. are adsorbed, and the outflowing gas is high-purity oxygen.

[0003] In Patent CN201120181106.88, a split oxygen generator intake filter and an oxygen generator are disclosed. The filter includes an upper housing and a lower housing. The upper housing and the lower housing are installed together to form a filtering cavity. A filtering device is arranged in the filtering cavity. An air pipe port for connecting an air pipe is arranged on the outer wall of the lower housing, and an air inlet is arranged above the upper housing. The oxygen generator intake filter is externally installed on the oxygen generator, which is convenient for disassembly and assembly and has low explosion noise.

[0004] In the above patent, an air outlet pipe is arranged below the filtering device. The air outlet pipe is used to connect the air pipe port on the outer wall of the lower housing to supply air to the oxygen generator. The external installation of the oxygen generator intake filter will increase the overall volume of the oxygen generator, which is not conducive to the compactness of the structure. The air pipe port is fixedly arranged on the outer wall of the lower housing. Generally, a connecting hose is used for connecting the air outlet pipe and the air pipe port. The two ends of the connecting hose need to be respectively connected to the air outlet pipe and the air pipe port in a sealed manner, and the connection operation takes a long time and has low efficiency.

[0005] The above information disclosed in this background art is only used to increase the understanding of the background art of this application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0006] Aiming at the above problems in the prior art, the utility model provides an air inlet pipe head structure of an oxygen generator, which realizes the connection between the filtering cavity and the compressor air inlet pipe, has a compact structure setting, and is firmly installed and fixed.

[0007] To achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0008] An air inlet pipe head structure of an oxygen generator includes:

[0009] An air inlet pipe head, which is connected between the filtering cavity and the compressor air inlet pipe;

[0010] An installation groove for accommodating the filtering cavity;

[0011] A first avoidance opening for avoiding the intake pipe head is formed on a first groove wall of the installation groove;

[0012] The intake pipe head has a pipe head portion and a mounting plate provided on the outside of the pipe head portion. An installation groove opening for accommodating the mounting plate is provided inside the first avoidance opening, and the mounting plate is located within the installation groove opening.

[0013] In some embodiments of the present application, the first avoidance opening is a U-shaped groove opening, and the upper end surface of the mounting plate is flush with the upper end surface of the first groove wall.

[0014] In some embodiments of the present application, the intake pipe head has a limit post and a first connecting portion connecting the limit post and the pipe head portion; a limit groove matching the limit post is provided on the first groove wall, and the limit post is located within the limit groove.

[0015] In some embodiments of the present application, the limit post is located at the outer end of the first connecting portion and is arranged parallel to the axial direction of the pipe head portion; one end of the limit groove away from the first groove wall is the insertion end when the limit post is installed.

[0016] In some embodiments of the present application, the intake pipe head further has a second connecting portion connected between the mounting plate and the first connecting portion, and the second connecting portion is spaced apart from the limit post.

[0017] In some embodiments of the present application, a second avoidance opening connected to the first avoidance opening is formed on a second groove wall of the installation groove.

[0018] In some embodiments of the present application, the intake pipe head further has a connection head bent and extending along the upper end of the pipe head portion. An air outlet hole matching the connection head is provided on the filtering cavity, and the connection head is connected and installed at the air outlet hole.

[0019] In some embodiments of the present application, the installation hole is oppositely arranged with respect to the intake end of the filtering cavity. An air outlet nozzle extending away from the intake end is provided along the air outlet hole, and the air outlet nozzle is hermetically connected to the connection head.

[0020] In some embodiments of the present application, the connection head is located within the air outlet nozzle, and a circumferential sealing groove is provided outside the connection head, and a sealing ring is located at the sealing groove.

[0021] In some embodiments of the present application, the filtering cavity is detachably located in the installation groove, and the axial direction of the joint head is the loading and unloading direction of the filtering cavity; when the filtering cavity is loaded and unloaded, the installation or disassembly of the air inlet pipe head and the filtering cavity can be synchronously realized.

[0022] In some embodiments of the present application, the filtering cavity is provided with an avoidance groove which is recessed and used for avoiding the air inlet pipe head, and the air inlet pipe head extends into the avoidance groove; the avoidance groove is located above the first avoidance port.

[0023] In some embodiments of the present application, the lower end of the pipe head is connected to the air inlet pipe, the air inlet pipe is located in the equipment cavity, and a reserved port is opened on the top plate of the equipment cavity above the air inlet pipe; the pipe head passes through the reserved port and is connected to the air inlet pipe.

[0024] In some embodiments of the present application, a support edge that bends upward and extends is provided at the edge of the reserved port, and the support edge is used for supporting the mounting plate.

[0025] In some embodiments of the present application, the upper end of the support edge is flush with the bottom of the installation groove opening.

[0026] Based on the above air inlet pipe head structure of an oxygen generator, the present application further provides an oxygen generator having the above air inlet pipe head structure, which realizes the connection between the filtering cavity and the compressor air inlet pipe, has a compact structure setting, and is firmly installed and fixed.

[0027] An oxygen generator having the above air inlet pipe head structure.

[0028] Compared with the prior art, the advantages and positive effects of the present utility model are: by setting the air inlet pipe head structure, the connection between the filtering cavity and the compressor air inlet pipe is realized, the structure setting is compact, and the installation and fixation are firm. The filtering cavity is arranged in the installation groove, which is convenient for installing the filtering cavity; the mounting plate and the installation groove opening are provided, so that the air inlet pipe head is limited in the installation groove, the limit of the air inlet pipe head is realized, and the air inlet pipe head is firmly installed and fixed by connecting the two ends of the air inlet pipe head to the filtering cavity and the air inlet pipe.

[0029] After reading the specific embodiments of the present utility model in conjunction with the drawings, other features and advantages of the present utility model will become clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 Schematic structural diagram of an embodiment of the air inlet pipe head structure of an oxygen generator proposed by the present utility model;

[0032] Figure 2 is Figure 1 a cross-sectional structural diagram;

[0033] Figure 3 is Figure 2 an enlarged structural diagram of area A in

[0034] Figure 4 a schematic diagram of the installation state of the filter chamber and the air inlet pipe head;

[0035] Figure 5 is Figure 1 a structural diagram after removing the rear shell in

[0036] Figure 6 is Figure 5 an enlarged structural diagram of area B in

[0037] Figure 7 a structural diagram of the rear shell;

[0038] Figure 8 is Figure 7 an enlarged structural diagram at the installation groove in

[0039] Among them, the oxygen generator 100;

[0040] the shell 10;

[0041] the equipment chamber 20; the top plate 23; the reserved opening 231; the supporting edge 232;

[0042] the filter chamber 17; the avoidance groove 175; the air outlet hole 17511; the air outlet nozzle 17512;

[0043] the installation groove 18; the first groove wall 181; the second groove wall 182; the first avoidance opening 1811; the installation groove opening 1812; the limiting groove 1813;

[0044] the compressor chamber 30; the air inlet pipe 37;

[0045] the air inlet pipe head 36; the pipe head part 361; the joint part 362; the mounting plate 363; the limiting column 364; the first connecting part 365; the second connecting part 366. Specific embodiments

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0047] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the positional relationship shown in the drawings, with the direction towards the center of the component being "inner" and the opposite being "outer". The terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically and clearly defined.

[0048] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0050] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0051] See Figures 1-8 , which is an embodiment of the intake pipe head structure of an oxygen generator proposed by the present utility model. The intake pipe head structure of an oxygen generator 100 includes: an intake pipe head 36 and a mounting groove 18. The intake pipe head 36 is connected between the filtration chamber 17 and the intake pipe of the compressor. The mounting groove 18 is used to accommodate the filtration chamber 17. A first avoidance opening 1811 for avoiding the intake pipe head 36 is provided on the first groove wall 181 of the mounting groove 18; by providing the first avoidance opening 1811, the intake pipe head 36 extends into the mounting groove 18 through the first avoidance opening 1811. The first groove wall 181 is the lower groove wall of the mounting groove 18, and the compressor is located in the compressor chamber at the lower part inside the housing 10. The intake pipe head 36 extends upward into the mounting groove 18.

[0052] In this embodiment, see Figure 3 and Figure 8 As shown in, the intake pipe head 36 has a pipe head portion 361 and a mounting plate 363 provided on the outer side of the pipe head portion 361. A mounting groove opening 1812 for accommodating the mounting plate 363 is provided on the inner side of the first avoidance opening 1811, and the mounting plate 363 is located in the mounting groove opening 1812. By providing the mounting plate 363 and the mounting groove opening 1812, the intake pipe head 36 is limited within the mounting groove 18, realizing the limitation of the intake pipe head 36 and restricting the movement of the intake pipe head 36 in the outward direction; and by connecting both ends of the intake pipe head 36 to the filtration chamber 18 and the intake pipe, the installation and fixation of the intake pipe head 36 are firm. The mounting plate 363 is located in the mounting groove opening 1812, which can limit the downward movement and circumferential movement of the intake pipe head 36.

[0053] In some embodiments of the present application, the first avoidance opening 1811 is a U-shaped groove opening, and the upper end surface of the mounting plate 363 is flush with the upper end surface of the first groove wall 181; after the intake pipe head 36 is installed, the inner side of the first groove wall 181 of the mounting groove 18 is flush, and the pipe head portion 361 extends into the mounting groove 18, which is beneficial to the installation operation of the filtration chamber 17.

[0054] In some embodiments of the present application, see Figure 6 andFigure 8 As shown, the intake pipe head 36 has a limit post 364 and a first connecting portion 365 connecting the limit post 364 and the pipe head portion 361; a limit groove 1813 matching the limit post 364 is provided on the first groove wall 181, and the limit post 364 is located in the limit groove 1813. The limit post 364 is used to limit the movement of the intake pipe head 36 towards the open end of the first avoidance opening 1811. The limit post 364 is located at the rear side of the pipe head portion 361, and the front side of the first avoidance opening 1811 is the open end. That is, the limit post 364 is mainly used to limit the forward movement of the intake pipe head 36. Of course, the cooperation between the limit post 364 and the limit groove 1813 can limit the movement of the intake pipe head 36 in other directions except upward. The limit post 364 is installed into the limit groove 1813 from top to bottom.

[0055] In some embodiments of the present application, the limit post 364 is located at the outer end of the first connecting portion 365, and the limit post 364 is arranged parallel to the axial direction of the pipe head portion 361; the end of the limit groove 1813 away from the first groove wall 181 is the insertion end when the limit post 364 is installed. The intake pipe head 36 is installed from above, so that the intake pipe at the lower end of the pipe head portion 361 is connected, and at the same time, the limit post 364 is installed into the limit groove 1813.

[0056] In some embodiments of the present application, the intake pipe head 36 further has a second connecting portion 366 connected between the mounting plate 363 and the first connecting portion 365. The second connecting portion 366 is arranged at an interval from the limit post 364, and the second connecting portion 366 is connected to the pipe head portion 361. The second connecting portion 366 is provided to support the first connecting portion 365 and increase the structural strength. A second avoidance opening 1812 connected to the first avoidance opening 1811 is formed on the second groove wall 182 of the mounting groove 18.

[0057] In some embodiments of the present application, the intake pipe head 36 further has a joint portion 362 bent and extending along the upper end of the pipe head portion 361. An air outlet hole 17511 matching the joint portion 362 is provided on the filter cavity 17, and the joint portion 362 is connected and installed at the air outlet hole 17511. By providing the air outlet hole 17511 and the joint portion 362, the connection between the intake pipe head 36 and the filter cavity 17 is realized.

[0058] In some embodiments of the present application, refer to Figure 3As shown, the air outlet hole 17511 is disposed opposite to the air inlet end of the filter chamber 17, which is conducive to the air flow in the filter chamber 17 reaching the air outlet hole 17511 quickly and efficiently. For the convenience of installation of the intake pipe head 36 and the air outlet hole 17511, an air outlet nozzle 17512 extending into the avoidance groove 175 is provided along the air outlet hole 17511, or in other words, an air outlet nozzle 17512 extending away from the air inlet end of the filter chamber 17 is provided along the air outlet hole 17511, and the air outlet nozzle 17512 is hermetically connected to the intake pipe head 36. By providing the air outlet nozzle 17512, the contact area between the intake pipe head 36 and the filter chamber 17 is increased, and the axial contact dimension of the air outlet hole 17511 is increased, which is conducive to increasing the sealing performance of the connection between the intake pipe head 36 and the air outlet nozzle 17512 and the stability of fixation.

[0059] In some embodiments of the present application, the joint part 362 is located inside the air outlet nozzle 17512. A circumferential sealing groove 3621 is provided outside the joint part 362, and the sealing ring is located at the sealing groove 3621 to achieve the sealing between the joint part 362 and the air outlet nozzle 17512.

[0060] In some embodiments of the present application, the filter chamber 17 is detachably located in the installation groove 18, and the axial direction of the joint part 362 is the loading and unloading direction of the filter chamber 17; when the filter chamber 17 is loaded and unloaded, the installation or disassembly of the intake pipe head 36 and the filter chamber 17 can be realized synchronously. The detachable setting of the filter chamber 17 enables the direct replacement of the filter chamber 17 when the second filter element needs to be replaced, which is conducive to improving the efficiency of the replacement operation. Setting the axial direction of the joint part 362 as the loading and unloading direction of the filter chamber 17 ensures that when the filter chamber 17 is installed into the installation groove 18, it moves inward along the axial direction of the joint part 362. After the filter chamber 17 is installed in place, the installation of the intake pipe head 36 and the filter chamber 17 can be realized synchronously; the installation operation of the intake pipe head 36 and the filter chamber 17 is saved, which is conducive to the installation efficiency.

[0061] In some embodiments of the present application, the filter chamber 17 is provided with an inwardly concave avoidance groove 175 for avoiding the intake pipe head 36, and the intake pipe head 36 extends into the avoidance groove 175; providing the avoidance groove 175 is conducive to the compact structure and reduced occupied space; and during the loading and unloading process of the filter chamber 17 along the axial direction of the joint part 362, the avoidance of the intake pipe head 36 is realized. The avoidance groove 175 is located above the first avoidance opening 181.

[0062] In some embodiments of the present application, refer to Figure 2 and Figure 8As shown, the lower end of the pipe head 361 is connected to the intake pipe 37. The intake pipe 37 is located inside the equipment cavity 20. A reserved opening 231 is provided on the top plate 23 of the equipment cavity 20 above the intake pipe 37. The pipe head 361 passes through the reserved opening 231 and is connected to the intake pipe 37. The compressor is located inside the compressor cavity 30. The equipment cavity 20 is provided above the compressor cavity 30. The installation groove 18 is located above the equipment cavity 20. When the intake pipe head 36 is installed downward, the lower end of the pipe head 36 passes through the reserved opening 231 and is connected to the intake pipe 37. The mounting plate 363 is located inside the installation groove opening 1812, and the limit post 364 is installed in the limit groove 1813, realizing the connection and installation fixation of the lower end of the intake pipe head 36, which is beneficial to simplifying the installation operation steps and improving the installation and fixation efficiency.

[0063] In some embodiments of the present application, a support edge 232 that bends upward and extends is provided at the edge of the reserved opening 231. The support edge 232 is used to support the mounting plate 363. The upper end of the support edge 232 is flush with the bottom of the installation groove opening 1812. Embodiment

[0064] See Figures 1-8 , which is an embodiment of an oxygen generator proposed by the present utility model. An oxygen generator 100 has the above intake pipe head structure, realizing the connection between the filter cavity 17 and the intake pipe 37 of the compressor. The structure is compactly arranged and firmly installed and fixed.

[0065] In this embodiment, the intake pipe head structure of an oxygen generator 100 includes: an intake pipe head 36 and an installation groove 18. The intake pipe head 36 is connected between the filter cavity 17 and the intake pipe of the compressor. The installation groove 18 is used to accommodate the filter cavity 17. A first avoidance opening 1811 for avoiding the intake pipe head 36 is provided on the first groove wall 181 of the installation groove 18. By providing the first avoidance opening 1811, the intake pipe head 36 extends into the installation groove 18 through the first avoidance opening 1811. The first groove wall 181 is the lower groove wall of the installation groove 18. The compressor is located inside the compressor cavity at the lower part of the outer shell 10, and the intake pipe head 36 extends upward into the installation groove 18.

[0066] In this embodiment, the intake pipe head 36 has a pipe head portion 361 and a mounting plate 363 provided on the outer side of the pipe head portion 361. An installation notch 1812 for accommodating the mounting plate 363 is provided inside the first avoidance opening 1811, and the mounting plate 363 is located within the installation notch 1812. The provision of the mounting plate 363 and the installation notch 1812 confines the intake pipe head 36 within the installation groove 18, achieving the limit of the intake pipe head 36 and restricting its outward movement; and the intake pipe head 36 is connected to the filtration chamber 18 and the intake pipe at both ends, ensuring the firm installation and fixation of the intake pipe head 36. The mounting plate 363 being located within the installation notch 1812 can limit the downward movement and circumferential movement of the intake pipe head 36.

[0067] In some embodiments of the present application, the first avoidance opening 1811 is a U-shaped notch, and the upper end surface of the mounting plate 363 is flush with the upper end surface of the first groove wall 181; after the intake pipe head 36 is installed, the inner sides of the first groove walls 181 of the installation groove 18 are flush, and the pipe head portion 361 extends into the installation groove 18, which is beneficial for the installation operation of the filtration chamber 17.

[0068] In some embodiments of the present application, the intake pipe head 36 has a limit post 364 and a first connection portion 365 connecting the limit post 364 and the pipe head portion 361; a limit groove 1813 matching the limit post 364 is provided on the first groove wall 181, and the limit post 364 is located within the limit groove 1813. The limit post 364 is used to limit the movement of the intake pipe head 36 towards the open end of the first avoidance opening 1811. The limit post 364 is located at the rear side of the pipe head portion 361, and the front side of the first avoidance opening 1811 is the open end, that is, the limit post 364 is mainly used to limit the forward movement of the intake pipe head 36. Of course, the cooperation of the limit post 364 and the limit groove 1813 can limit the movement of the intake pipe head 36 in other directions except upwards. The limit post 364 is installed into the limit groove 1813 from top to bottom.

[0069] In some embodiments of the present application, the limit post 364 is located at the outer end of the first connection portion 365, and the limit post 364 is arranged parallel to the axis of the pipe head portion 361; the end of the limit groove 1813 away from the first groove wall 181 is the insertion end for installing the limit post 364. The intake pipe head 36 is installed from above, such that the intake pipe at the lower end of the pipe head portion 361 is connected, and at the same time, the limit post 364 is installed into the limit groove 1813.

[0070] In some embodiments of the present application, the intake pipe head 36 further has a second connecting portion 366 connected between the mounting plate 363 and the first connecting portion 365. The second connecting portion 366 is spaced apart from the limiting post 364, and the second connecting portion 366 is connected to the pipe head portion 361. The second connecting portion 366 is provided to support the first connecting portion 365 and increase the structural strength. A second avoidance opening 1812 connected to the first avoidance opening 1811 is formed on the second groove wall 182 of the mounting groove 18.

[0071] In some embodiments of the present application, the intake pipe head 36 further has a connection head 362 bent and extending along the upper end of the pipe head portion 361. An air outlet hole 17511 matching the connection head 362 is provided on the filtering cavity 17, and the connection head 362 is connected and installed at the air outlet hole 17511. By providing the air outlet hole 17511 and the connection head 362, the connection between the intake pipe head 36 and the filtering cavity 17 is realized.

[0072] In some embodiments of the present application, the air outlet hole 17511 is oppositely arranged with respect to the air inlet end of the filtering cavity 17, which is beneficial for the air flow in the filtering cavity 17 to quickly and efficiently reach the air outlet hole 17511. For the convenience of installing the intake pipe head 36 and the air outlet hole 17511, an air outlet nozzle 17512 extending into the avoidance groove 175 is provided along the air outlet hole 17511, or in other words, an air outlet nozzle 17512 extending away from the air inlet end of the filtering cavity 17 is provided along the air outlet hole 17511, and the air outlet nozzle 17512 is hermetically connected to the intake pipe head 36. By providing the air outlet nozzle 17512, the contact area between the intake pipe head 36 and the filtering cavity 17 is increased, and the axial contact dimension of the air outlet hole 17511 is increased, which is beneficial to increasing the sealing performance of the connection between the intake pipe head 36 and the air outlet nozzle 17512 and the fixing stability.

[0073] In some embodiments of the present application, the connection head 362 is located inside the air outlet nozzle 17512. A circumferential sealing groove 3621 is provided outside the connection head 362, and the sealing ring is located at the sealing groove 3621 to realize the sealing between the connection head 362 and the air outlet nozzle 17512.

[0074] In some embodiments of the present application, the filter chamber 17 is detachably located in the mounting groove 18, and the axial direction of the connection head 362 is the loading and unloading direction of the filter chamber 17; when the filter chamber 17 is loaded and unloaded, the installation or disassembly of the intake pipe head 36 and the filter chamber 17 can be realized synchronously. The detachable setting of the filter chamber 17 enables the direct replacement of the filter chamber 17 when the second filter element needs to be replaced, which is beneficial to improving the efficiency of the replacement operation. Setting the axial direction of the connection head 362 as the loading and unloading direction of the filter chamber 17 ensures that when the filter chamber 17 is installed into the mounting groove 18, it moves inward along the axial direction of the connection head 362. After the filter chamber 17 is installed in place, the installation of the intake pipe head 36 and the filter chamber 17 can be realized synchronously; the installation operation of the intake pipe head 36 and the filter chamber 17 is saved, which is beneficial to the installation efficiency.

[0075] In some embodiments of the present application, the filter chamber 17 is provided with a recessed avoidance groove 175 for avoiding the intake pipe head 36, and the intake pipe head 36 extends into the avoidance groove 175; setting the avoidance groove 175 is beneficial to the compact structure and reduces the occupied space; and during the loading and unloading process of the filter chamber 17 along the axial direction of the connection head 362, the avoidance of the intake pipe head 36 is realized. The avoidance groove 175 is located above the first avoidance opening 181.

[0076] In some embodiments of the present application, the lower end of the pipe head 361 is connected to the intake pipe 37, and the intake pipe 37 is located in the equipment chamber 20. A reserved opening 231 is provided on the top plate 23 of the equipment chamber 20 above the intake pipe 37; the pipe head 361 passes through the reserved opening 231 and is connected to the intake pipe 37. The compressor is located in the compressor chamber 30, and an equipment chamber 20 is provided on the upper side of the compressor chamber 30. The mounting groove 18 is located above the equipment chamber 20. When the intake pipe head 36 is installed downward, the lower end of the pipe head 36 passes through the reserved opening 231 and is connected to the intake pipe 37. The mounting plate 363 is located in the mounting groove opening 1812, and the limit post 364 is installed in the limit groove 1813, realizing the connection and installation fixation of the lower end of the intake pipe head 36, which is beneficial to simplifying the installation operation steps and improving the installation fixation efficiency.

[0077] In some embodiments of the present application, a support edge 232 that bends upward and extends is provided at the edge of the reserved opening 231, and the support edge 232 is used to support the mounting plate 363. The upper end of the support edge 232 is flush with the bottom of the mounting groove 1812 opening.

[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. The inlet pipe head structure of an oxygen generator, characterized in that, Comprising: An air inlet pipe head, which is connected between the filtering cavity and the compressor air inlet pipe; An installation groove, which is used to accommodate the filtering cavity; A first avoidance opening for avoiding the air inlet pipe head is formed on the first groove wall of the installation groove; The air inlet pipe head has a pipe head part and a mounting plate arranged on the outer side of the pipe head part. An installation groove opening for accommodating the mounting plate is arranged on the inner side of the first avoidance opening, and the mounting plate is located in the installation groove opening.

2. The intake pipe head structure according to claim 1, wherein, The first avoidance opening is a U-shaped groove opening, and the upper end surface of the mounting plate is flush with the upper end surface of the first groove wall.

3. The intake pipe head structure according to claim 1, characterized in that, The air inlet pipe head has a limit post and a first connecting part connecting the limit post and the pipe head part; a limit groove matching with the limit post is arranged on the first groove wall, and the limit post is located in the limit groove.

4. The intake pipe head structure according to claim 3, wherein, The limit post is located at the outer end of the first connecting part and is arranged parallel to the axial direction of the pipe head part; the end of the limit groove far away from the first groove wall is the loading end when the limit post is installed.

5. The intake pipe head structure according to claim 3, wherein, The air inlet pipe head further has a second connecting part connected between the mounting plate and the first connecting part, and the second connecting part is arranged at an interval from the limit post.

6. The intake pipe head structure according to any one of claims 1 to 5, characterized in that, The filtering cavity is detachably located in the installation groove, and the air inlet pipe head further has a connecting head bent and extended along the upper end of the pipe head part, and the axial direction of the connecting head is the loading and unloading direction of the filtering cavity; when the filtering cavity is loaded and unloaded, the loading and unloading of the air inlet pipe head and the filtering cavity can be realized synchronously.

7. The intake pipe head structure according to any one of claims 1 to 5, characterized in that, The filtering cavity is provided with an avoidance groove which is recessed and used for avoiding the air inlet pipe head, and the air inlet pipe head extends into the avoidance groove; the avoidance groove is located above the first avoidance opening.

8. The intake pipe head structure according to claim 7, characterized in that, The lower end of the pipe head part is connected to the air inlet pipe, the air inlet pipe is located in the equipment cavity, and a reserved opening located above the air inlet pipe is formed on the top plate of the equipment cavity; the pipe head part passes through the reserved opening and is connected to the air inlet pipe.

9. The intake pipe head structure according to claim 8, wherein, A support edge bent and extended upward is arranged at the edge of the reserved opening, and the support edge is used to support the mounting plate; the upper end of the support edge is flush with the bottom of the installation groove opening.

10. An oxygen generator, characterized in that, Having the air inlet pipe head structure according to any one of claims 1 to 9.

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