Nucleic acid analyzer

Abstract

The utility model relates to a nucleic acid analyzer which comprises a shell and various modules arranged in the shell, and the various modules comprise an air pump module, an air storage module, a piston air cylinder module, a thermal cycle module, an extrusion air cylinder module, a camera module and a main circuit module, each module is divided into a first installation area, a second installation area and a cable channel area according to an installation area in the casing. A plurality of supporting columns are vertically arranged between the top plate and the bottom plate of the machine shell. Compared with an existing nucleic acid analyzer which is disordered in internal module layout, irregular in shell shape and incapable of being stacked, the nucleic acid analyzer provided by the utility model is regular and simple in internal structure and appearance, good in product integration level and capable of supporting stacking of a plurality of instruments.

Description

Technical Field

[0001] The present application relates to the technical field of in vitro diagnostic products, and in particular to a nucleic acid analyzer. Background Art

[0002] In the field of in vitro diagnostic products (IVD), nucleic acid analyzers are an important equipment in this field, mainly used in molecular diagnostic technology, especially under the influence of large-scale epidemics, and are one of the fastest-growing IVD subdivision technologies. At present, the various nucleic acid analyzers available on the market have different shapes, but most of them lack symmetrical and regular shapes. When multiple instruments need to be placed, they can only be laid flat on the workbench, resulting in crowded space and inconvenient operation. The fundamental reason for this situation is that there is currently a lack of optimized design for the internal modular structure of the nucleic acid analyzer, the product integration is not good, the appearance cannot be regular, and there is a large room for optimization; more specifically, the shell of the existing nucleic acid analyzer lacks reasonable layout optimization of the internal module installation area and cable channel, resulting in a bloated and irregular shell shape, coupled with the lack of support structure design in the shell, which makes it difficult to stack instruments. Therefore, it is an urgent problem to provide a nucleic acid analyzer with good product integration, regular shell and support for stacking instruments. Utility Model Content

[0003] In view of the technical problems existing in the prior art, the present application proposes a nucleic acid analyzer for receiving samples and completing nucleic acid detection, which includes a casing and an air pump module, an air storage module, a piston cylinder module, a thermal circulation module, an extrusion cylinder module, a camera module and a main circuit module arranged inside the casing; wherein the casing is a shell with a regular contour, the casing includes a top plate, a bottom plate, a front panel, a rear panel, a left panel and a right panel, the bottom plate includes a first installation area close to the front panel, a second installation area close to the rear panel and a cable channel area between the first installation area and the second installation area; wherein the piston cylinder module, the thermal circulation module, the extrusion cylinder module, the camera module and the air pump module are located in the first installation area; the air storage module and the main circuit module Located in the second installation area; wherein, the air pump module is used to absorb air and generate compressed air; the air storage module is used to store compressed air and supply air according to the branch; the piston cylinder module is used to use compressed air to push the cylinder rod to compress and fix the sample piece; the thermal cycle module is used to generate a thermal cycle to heat the sample piece so that the sample is amplified; the extrusion cylinder module is used to use compressed air to push the cylinder rod to squeeze the sample piece so that liquid flow occurs inside it; the camera module is used to generate a fluorescent reaction photo of the sample piece; the main circuit module is used to control each module; wherein the top plate and the bottom plate of the casing are parallel to each other, and a plurality of support columns are vertically arranged between the top plate and the bottom plate, the top ends of the support columns are connected to the top plate, and the ends of the support columns are connected to the bottom plate to form support for the casing.

[0004] Optionally, the sample injection port of the nucleic acid analyzer is located on the front panel. In the first installation area, the thermal cycle module is located at the rear end of the sample injection port, the piston cylinder module and the extrusion cylinder module are respectively located on both sides of the thermal cycle module, and the camera module and the air pump module are jointly located on the right side of the extrusion cylinder module; in the second installation area, the gas storage module is close to the left panel, and the main circuit module is close to the right panel.

[0005] Optionally, a positioning groove is provided on the top plate, and a foot is provided under the bottom plate, and the positioning groove corresponds to the position of the foot; the top end of the support column is vertically installed under the positioning groove, and the end of the support column is vertically installed above the foot; when multiple nucleic acid analyzers are stacked, the foot under the bottom plate of the upper nucleic acid analyzer is placed in the positioning groove on the top plate of the lower nucleic acid analyzer.

[0006] Optionally, an anti-rotation protrusion is protruded horizontally on the support column, and an anti-rotation groove is circumferentially arranged around the anti-rotation protrusion. The anti-rotation groove is integrally formed with the top plate or the bottom plate to limit the rotation of the support column.

[0007] Optionally, a locking assembly is provided on the side of the front panel and / or the rear panel, which is used for snapping or releasing the front panel and / or the rear panel with the left panel or the right panel, and is used for disassembling and assembling the panels of the casing.

[0008] Optionally, the lock assembly includes: a mounting post, which is mounted on the front panel and / or the rear panel, and a mounting groove is formed on the side of the mounting post; a lock gripper, which has a mounting block protruding on the side, and the mounting block is inserted into the mounting groove so that the lock gripper and the mounting post are fitted together; a hook is provided on the adjacent side of the mounting block, which is used to snap onto the left panel or the right panel; a sliding button, which is mounted on the side of the lock gripper and arranged opposite to the mounting block; a spring is provided between the mounting groove and the mounting block, and when the hook is snapped, the spring is in a natural state; when the sliding button is moved to compress and deform the spring, the hook is released.

[0009] Optionally, the top plate is integrally formed with the left side panel and the right side panel to form a U-shaped cover, and the left side panel and the right side panel are buckled with the bottom plate.

[0010] Optionally, the connection between the bottom plate and the front panel and the rear panel is provided with plug-in wings to prevent assembly interference; the connection between the top plate and the front panel and the rear panel is provided with a waterproof edge to prevent liquid from entering the interior of the nucleic acid analyzer.

[0011] Optionally, the injection port is provided with an injection window and an injection window mounting portion; the injection window mounting portion is located in the housing and overlaps the edge of the injection port; the injection window mounting portion is provided with a positioning protrusion, and the injection window is provided with a positioning groove, and the positioning groove is adapted to the positioning protrusion to install the injection window on the injection window mounting portion.

[0012] Optionally, a mounting channel is provided in front of the sample injection window, and a light-guiding optical fiber is installed on the mounting channel for emitting light of different colors to indicate different working states of the nucleic acid analyzer.

[0013] The embodiment of the present application optimizes the design of the internal space of the nucleic acid analyzer, reserves a cable area in the middle, designs the adjacent relationship between the modules according to the position of the functional modules, and arranges the modules reasonably on both sides of the cable area to form an overall regular spatial structure. A shell with a regular appearance can be installed, so that multiple instruments are not easy to fall over when stacked. In addition, the specially designed support column structure can provide positioning and support for the upper and lower instruments. When multiple instruments are stacked, the overall structure has high stability and convenient sampling and detection operations. The nucleic acid analyzer provided by the present application optimizes the installation area for the internal modules and provides a regular instrument shell. In addition, the support column structure design can effectively solve the problems of poor integration, irregular appearance, and insufficient desktop space caused by the inability to stack existing nucleic acid analyzer products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Below, the preferred embodiments of the present application will be further described in detail with reference to the accompanying drawings, wherein:

[0015] Figure 1 It is a schematic diagram of the internal module structure of the nucleic acid analyzer according to an embodiment of the present application;

[0016] Figure 2 is a schematic structural diagram of a nucleic acid analyzer according to an embodiment of the present application;

[0017] Figure 3A , Figure 3B They are Figure 2 A partial enlarged view of part A and part B in FIG.

[0018] Figure 4 This is a schematic diagram of the structure of the nucleic acid analyzers of the embodiment of the present application when stacked;

[0019] Figure 5 It is a partial assembly relationship diagram of the stackable support structure of the nucleic acid analyzer according to the embodiment of the present application;

[0020] Figure 6 is a schematic structural diagram of a support column and an anti-rotation groove according to an embodiment of the present application;

[0021] Figure 7 is a schematic structural diagram of a front panel of an embodiment of the present application;

[0022] Fig. 8A is a schematic structural diagram of a lock assembly according to an embodiment of the present application;

[0023] Figure 8B It is an assembly relationship diagram of the lock component of the embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] In the following detailed description, reference may be made to the various specification drawings that are part of the present application and are used to illustrate specific embodiments of the present application. In the accompanying drawings, similar reference numerals describe substantially similar components in different figures. The various specific embodiments of the present application are described below in sufficient detail so that a person of ordinary skill in the art with relevant knowledge and skills in the art can implement the technical solutions of the present application. It should be understood that other embodiments may also be used or structural, logical or electrical changes may be made to the embodiments of the present application.

[0026] Figure 1 is a schematic diagram of the internal module structure of the nucleic acid analyzer in an embodiment of the present application, Figure 2 is a schematic diagram of the structure of the nucleic acid analyzer of the embodiment of the present application, combined with Figure 1 , Figure 2 As shown, the nucleic acid analyzer includes a housing 10 with a regular outline and a support column 20; the housing 10 can be a square or other regular structure. The housing 10 includes a top plate 11, a bottom plate 12, a front panel (not shown in the figure), a rear panel (not shown in the figure), a left panel 13 and a right panel 14, wherein the top plate 11 and the bottom plate 12 are parallel to each other. Figure 1 The panel pointed to by the middle M direction is the front panel, and the front panel is provided with a sample inlet 150 near the left panel 13. Inside the housing 10, there are arranged an air pump module, an air storage module, a piston cylinder module, a thermal cycle module, an extrusion cylinder module, a camera module and a main circuit module, wherein the air pump module is used to absorb air and generate compressed air; the air storage module is used to store compressed air and supply air according to the branch; the piston cylinder module is used to use compressed air to push the cylinder rod to compress and fix the sample piece; the thermal cycle module is used to generate a thermal cycle to heat the sample piece so that the sample is amplified; the extrusion cylinder module is used to use compressed air to push the cylinder rod to squeeze the sample piece so that liquid flow occurs inside it; the camera module is used to generate a fluorescent reaction photo of the sample piece; and the main circuit module is used to control each module.

[0027] In some embodiments, all modules are installed on the base plate 12, which includes a first installation area close to the front panel, a second installation area close to the rear panel, and a cable channel area between the first installation area and the second installation area, wherein the piston cylinder module, the thermal cycle module, the extrusion cylinder module, the camera module and the air pump module are located in the first installation area; the gas storage module and the main circuit module are located in the second installation area. Further, in the first installation area, the thermal cycle module is located at the rear end of the sample inlet 150, the piston cylinder module and the extrusion cylinder module are located on both sides of the thermal cycle module, and the camera module and the air pump module are located on the right side of the extrusion cylinder module; in the second installation area, the gas storage module is close to the left panel 13, and the main circuit module is close to the right panel 14. The modules work together to enable the nucleic acid analyzer to receive samples and complete nucleic acid detection through the fluorescent reaction of the samples, and output the detection results to the client interface. Through the above-mentioned optimized design of the internal space of the nucleic acid analyzer, the modules are arranged reasonably and form an overall regular spatial structure, so as to facilitate the installation of a casing with a regular appearance.

[0028] In some embodiments, the housing 10 is usually made of ABS engineering plastics, aluminum alloy or stainless steel. In order to control the overall weight of the instrument, ABS engineering plastics are preferred, which is much lighter than common metals such as aluminum alloy and stainless steel. Figure 2 As shown, a plurality of support columns 20 are vertically arranged between the top plate 11 and the bottom plate 12, the top ends of the support columns are connected to the top plate 11, and the bottom ends of the support columns are connected to the bottom plate 12, so as to support the housing 10. The support columns can be installed in various ways, such as screw connection, bolt connection, welding, and installation through connectors.

[0029] Many nucleic acid analyzers currently available on the market have different housing shapes and lack symmetrical regular shapes, which makes it impossible to stack nucleic acid analyzers and lay them flat on the workbench, resulting in space shortage and inconvenient operation. Figure 2 As shown, in some embodiments of the present application, a positioning groove 110 is provided on the top plate 11, and a foot 120 is provided under the bottom plate 12, the positioning groove 110 corresponds to the position of the foot 120, the top end of the support column 20 is vertically installed below the positioning groove 110, and the end of the support column 20 is vertically installed above the foot 120. Figure 4 Schematic diagram of the structure of the nucleic acid analyzer of the embodiment of the present application when stacked. Figure 4 As shown, when multiple nucleic acid analyzers are stacked in sequence, the upper nucleic acid analyzers are stacked above the lower nucleic acid analyzers. At this time, the feet under the bottom plate of the upper nucleic acid analyzer are placed in the positioning grooves on the top plate of the lower nucleic acid analyzer.

[0030] Figure 3A , Figure 3B They are Figure 2 Partially enlarged views of parts A and B in the figure. Figure 5 1 is a partial assembly diagram of the stackable support structure of the nucleic acid analyzer of the embodiment of the present application. Figure 3A , Figure 3B As shown, the top of the support column 20 is fixedly connected to the positioning groove 110 through the first connecting member 111, and the end of the support column 20 is fixedly connected to the foot 120 through the second connecting member 121. Figure 5 The first connecting member 111 may be a thumb screw, the bottom surface of the positioning groove 110 has an opening, the thumb screw passes through the bottom surface of the positioning groove 110 and is connected to the top of the support column 20; the second connecting member 121 may be a screw, the top surface of the foot 120 has an opening, the screw passes through the top surface of the foot 120 and is connected to the end of the support column 20. At this time, the support column 20 is a double-headed internal thread support column.

[0031] Optionally, according to an embodiment of the present application, the top of the support column 20 is fixedly connected to the positioning groove 110 through the first connecting member 111. The first connecting member 111 can be a thumb screw, the head of which tends to be flat, for better contact with the foot 120 and bearing weight. The bottom surface of the positioning groove 110 has an opening, and the thumb screw passes through the bottom surface of the positioning groove 110 and is connected to the top of the support column 20. The end of the support column 20 passes through the opening on the bottom plate 12 and is sleeved with the foot 120.

[0032] Optionally, according to an embodiment of the present application, the top end of the support column 20 is welded under the positioning groove 110, and the end of the support column 20 is fixedly connected to the foot 120 through a second connecting member 121. The second connecting member 121 can be a screw, and the top surface of the foot 120 has an opening, and the screw passes through the top surface of the foot 120 and is connected to the end of the support column 20.

[0033] Figure 6 Schematic diagram of the structure of the support column and the anti-rotation groove of the embodiment of the present application. Figure 6 As shown, an anti-rotation protrusion 21 is protruded in the horizontal direction on the support column 20, and an anti-rotation groove 22 is circumferentially arranged along the anti-rotation protrusion 21, and the anti-rotation groove 22 is integrally formed with the top plate 11 or the bottom plate 12 to limit the rotation of the support column 20. The anti-rotation protrusion 21 and the anti-rotation groove 22 are arranged, and the two cooperate to not only position the support column 20 on the basis of utilizing less space, but also prevent the rotation of the support column 20, especially prevent the rotation of the support column 20 that may occur during the installation process, and strengthen the stability of the support column 20.

[0034] Furthermore, the anti-rotation protrusion 21 can be two rectangular protrusions, which are symmetrically arranged along both sides of the support column 20; the anti-rotation groove 22 circumferentially arranged along the anti-rotation protrusion 21 can be a rectangular parallelepiped, and the anti-rotation groove 22 is integrally formed with the bottom plate 12. At this time, the anti-rotation protrusion 21 extends outward from the anti-rotation groove 22 with a first end, and the first end is protruded in a horizontal direction with a grounding terminal 210 for connecting a grounding wire. Preferably, two grounding terminals 210 are arranged symmetrically along both sides of the support column 20, one of which is connected to the bottom plate 12 for grounding, and the other is connected to the top plate 11 for grounding.

[0035] The housings of many nucleic acid analyzers currently available on the market are usually designed in one piece, or fastened to each other by multiple fasteners. When a fault occurs inside the instrument and it needs to be disassembled, tools are required for disassembly and assembly, which is a complicated and time-consuming process. In order to solve this problem, some embodiments of the present application provide a housing structure that is easy to disassemble and assemble, such as Figure 2 As shown, the top plate 11, the left side plate 13, and the right side plate 14 are integrated into a U-shaped cover, and a plurality of slots are provided on the side edges thereof abutting against the front and rear panels (not shown in the figure) for engaging with the front and rear panels; a plurality of slots are also provided on the side edges thereof abutting against the bottom plate 12, and corresponding protrusions are provided on the bottom plate 12. First, the U-shaped cover is engaged with the bottom plate 12, and then the front and rear panels are engaged respectively.

[0036] Further, in order to ensure the stability of the above-mentioned snap-fit ​​structure, a lock assembly 30 may be provided on some panels. In the specific embodiment of the present application, the lock assembly 30 is provided on the front panel as an example for description. In other embodiments of the present application, the lock assembly 30 may be provided on the rear panel, and the present application has no additional restrictions on this. Figure 7 is a schematic diagram of the structure of the front panel of an embodiment of the present application, Fig. 8A is a schematic diagram of the structure of the lock assembly of an embodiment of the present application, Figure 8B : is an assembly diagram of the lock assembly of the embodiment of the present application. Figure 7 , Fig. 8A , Figure 8BAs shown, the lock assembly 30 includes a mounting post 31, a lock gripper 32 and a sliding button 33. The lock assembly 30 is installed on the side of the front panel 15 through the mounting post 31. For example, a through hole can be opened on the mounting post 31, and a threaded hole correspondingly opened on the side of the front panel 15 is adapted to the through hole, and the mounting post 31 is fixed to the front panel 15 by screws; a mounting groove 310 is opened on the side of the mounting post 31 for connecting with the lock gripper 32, and correspondingly, a mounting block 320 is convexly provided on the side of the lock gripper 32, and the mounting block 320 is inserted into the mounting groove 310 so that the lock gripper 32 fits with the mounting post 31, and the mounting groove 310 and the mounting block 320 are connected. A certain gap is left between the two sides to set a spring (not shown in the figure); the mounting groove 310 or the mounting block 320 can have a protruding positioning portion, which is used for the spring 311 to be sleeved on the positioning portion to maintain a relatively fixed position; a hook 321 is provided on the adjacent side of the mounting block 320, which is used to snap on the left panel 13 or the right panel 14, and a sliding button 33 is installed on the opposite side of the mounting block 320. When the hook 321 is snapped on the left panel 13 or the right panel 14, the spring is in a natural state, so that the locking structure remains stable; when the sliding button 33 is moved to compress and deform the spring, the hook 321 is released, and the front panel 15 can be removed from the instrument.

[0037] Furthermore, in order to prevent unauthorized persons from disassembling the instrument at will, a locking structure 40 can be provided on the locking assembly when the locking assembly 30 is in a locked state. The locking structure needs to be disassembled and assembled using special tools, and the sliding button 33 can be moved only after the locking structure 40 is removed.

[0038] In some embodiments, Figure 7 As shown, a sampling window mounting portion 151 and a sampling window 152 are mounted on the sampling port 150 provided on the front panel 15 of the housing 10. The sampling window mounting portion 151 is located in the housing 10 and overlaps the edge of the sampling port 150. A positioning protrusion is provided on the sampling window mounting portion 151, and a positioning groove is provided on the sampling window 152. The positioning groove and the positioning protrusion are matched to install the sampling window 152 on the sampling window mounting portion 151. On the front side of the front panel 15, the sampling window 152 can shield the sampling port 150, or the edge of the sampling window 152 can match the edge of the sampling port 150.

[0039] In some embodiments, Figure 7As shown, an optical fiber structural assembly 160 is also installed on the front panel 15, including a light guide optical fiber 161 and a light source head 162. The light guide optical fiber 161 is one or more, installed in the installation channel 153 on the back of the sample injection window 152, and extends outward from the installation channel 153, and is inserted into the optical fiber fixing member 163. The optical fiber fixing member 163 can be foam. At the same time, the sample injection window mounting portion 151 extends lap wings to both sides, and arc-shaped recesses are arranged on the lap wings along the circumference of the optical fiber fixing member 163 to accommodate the optical fiber fixing member 163. The optical fiber fixing member 163 is fixed to the front panel 15 through the sample injection window mounting portion 151, thereby fixing the installation route of the light guide optical fiber 161. The light source head 162 is fixed on the front panel 15 and connected to the light-guiding optical fiber 161. The light source head 162 can emit light of different colors, such as red and green light. The light-guiding optical fiber 161 can be made of transparent plastic. When the light source head 162 emits colored light, the light-guiding optical fiber 161 displays the light source on the sample injection window 152 to indicate different working states of the nucleic acid analyzer.

[0040] Furthermore, after the light-guiding optical fiber 161 is installed on the installation channel 153, a sealing member is covered on the light-guiding optical fiber 161 along the installation channel 153. The sealing member may be foam and is used to compress the light-guiding optical fiber 161. The sample inlet window 152 may be made of black translucent acrylic material, which can not only display the light-guiding optical fiber more clearly, but also prevent external light from affecting the internal fluorescence analysis of the instrument. The existing lighting structure of nucleic acid analyzers is relatively simple and unclear in indicating the working status, which often makes it difficult for operators to distinguish the operating status of the instrument or confuse it with the operating status of other instruments. The nucleic acid analyzer provided in the embodiment of the present application has a matching design of the sample inlet window and the light-guiding optical fiber on the front panel, which can clearly know the working status of the instrument.

[0041] In some embodiments, Figure 2 , Figure 3B As shown, in order to prevent assembly interference, a plug-in wing 125 can be provided at the connection between the base plate 12 and the front panel or the rear panel. The plug-in wing 125 is protruded at the connection between the base plate 12 and the front panel or the rear panel. The thickness of the plug-in wing 125 is smaller than the thickness of the base plate 12 to present a stepped shape. The front panel or the rear panel correspondingly adopts a stepped plug-in method to reserve an installation interface.

[0042] In some embodiments, Figure 2 , Figure 3A As shown, a waterproof edge 113 is provided at the connection between the top plate 11 and the front panel 15 and the rear panel 16 to prevent liquid from entering the interior of the nucleic acid analyzer.

[0043] In some embodiments, Figure 3B As shown, a foot mounting groove 124 is provided below the base plate 12 , and the foot 120 is accommodated in the foot mounting groove 124 , and the height of the foot 120 is greater than the height of the foot mounting groove 124 .

[0044] The above embodiments are only used to illustrate the present application, and are not intended to limit the present application. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the scope of the present application. Therefore, all equivalent technical solutions should also fall within the scope disclosed in the present application.

Claims

1. A nucleic acid analyzer, which is used to receive samples and complete nucleic acid detection, characterized in that: It includes a housing and an air pump module, an air storage module, a piston cylinder module, a thermal cycle module, an extrusion cylinder module, a camera module and a main circuit module arranged inside the housing; wherein, The housing is a shell with a regular contour, and the housing includes a top plate, a bottom plate, a front panel, a rear panel, a left panel, and a right panel, and the bottom plate includes a first mounting area close to the front panel, a second mounting area close to the rear panel, and a cable channel area between the first mounting area and the second mounting area; Among them, the piston cylinder module, the thermal cycle module, the extrusion cylinder module, the camera module and the air pump module are located in the first installation area; the air storage module and the main circuit module are located in the second installation area; the air pump module is used to absorb air and generate compressed air; the air storage module is used to store compressed air and supply air according to the branch; the piston cylinder module is used to use compressed air to push the cylinder rod to compress and fix the sample piece; the thermal cycle module is used to generate a thermal cycle to heat the sample piece so that the sample is amplified; the extrusion cylinder module is used to use compressed air to push the cylinder rod to squeeze the sample piece so that liquid flow occurs inside it; the camera module is used to generate a fluorescent reaction photo of the sample piece; the main circuit module is used to control each module; The top plate and the bottom plate of the casing are parallel to each other, and a plurality of support columns are vertically arranged between the top plate and the bottom plate, the top ends of the support columns are connected to the top plate, and the ends of the support columns are connected to the bottom plate to support the casing.

2. The nucleic acid analyzer according to claim 1, characterized in that: The injection port of the nucleic acid analyzer is located on the front panel. In the first installation area, the thermal cycle module is located at the rear end of the injection port, the piston cylinder module and the extrusion cylinder module are respectively located on both sides of the thermal cycle module, and the camera module and the air pump module are jointly located on the right side of the extrusion cylinder module; in the second installation area, the gas storage module is close to the left panel, and the main circuit module is close to the right panel.

3. The nucleic acid analyzer according to claim 1, characterized in that: The top plate is provided with a positioning groove, and the bottom plate is provided with a foot, and the positioning groove corresponds to the position of the foot; the top end of the support column is vertically installed below the positioning groove, and the bottom end of the support column is vertically installed above the foot; When multiple nucleic acid analyzers are stacked, the feet under the bottom plate of the upper nucleic acid analyzer are placed in the positioning grooves on the top plate of the lower nucleic acid analyzer.

4. The nucleic acid analyzer according to claim 1, characterized in that: An anti-rotation protrusion is protruded horizontally on the support column, and an anti-rotation groove is circumferentially arranged around the anti-rotation protrusion. The anti-rotation groove is integrally formed with the top plate or the bottom plate to limit the rotation of the support column.

5. The nucleic acid analyzer according to any one of claims 1 to 4, characterized in that: A locking assembly is provided on the side of the front panel and / or the rear panel, which is used for fastening or releasing the front panel and / or the rear panel with the left panel or the right panel, and is used for panel disassembly and assembly of the housing.

6. The nucleic acid analyzer according to claim 5, characterized in that: The lock assembly comprises: A mounting post, which is mounted on the front panel and / or the rear panel, and a mounting groove is provided on a side of the mounting post; A lock catch handle, a mounting block protruding from its side, the mounting block being inserted into the mounting groove so that the lock catch handle fits with the mounting column; a hook is provided on the adjacent side of the mounting block for buckling on the left panel or the right panel; A sliding button, which is mounted on the side of the locking gripper and is arranged opposite to the mounting block; A spring is provided between the mounting groove and the mounting block. When the hook is engaged, the spring is in a natural state. When the sliding button is moved to compress and deform the spring, the hook is released.

7. The nucleic acid analyzer according to claim 6, characterized in that: The top plate is integrally formed with the left side panel and the right side panel to form a U-shaped cover, and the left side panel and the right side panel are buckled with the bottom plate.

8. The nucleic acid analyzer according to claim 7, characterized in that: The connection between the bottom plate and the front panel and the rear panel is provided with plug-in wings to prevent assembly interference; the connection between the top plate and the front panel and the rear panel is provided with a waterproof edge to prevent liquid from entering the interior of the nucleic acid analyzer.

9. The nucleic acid analyzer according to claim 2, characterized in that: The injection port is provided with an injection window and an injection window mounting portion; the injection window mounting portion is located in the housing and overlaps the edge of the injection port; the injection window mounting portion is provided with a positioning protrusion, and the injection window is provided with a positioning groove, and the positioning groove is adapted to the positioning protrusion to mount the injection window on the injection window mounting portion.

10. The nucleic acid analyzer according to claim 9, characterized in that: An installation channel is provided in front of the sample injection window, and a light-guiding optical fiber is installed on the installation channel for emitting light of different colors to indicate different working states of the nucleic acid analyzer.

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