Atmosphere environment control system and method and printer

Abstract

The invention relates to the technical field of 3d printing, and discloses an atmosphere environment control system and method and a printer, the atmosphere environment control system comprises a cabin body, a filtering device and a gas driving device, the cabin body is provided with a cabin cavity, at least one exhaust port is formed in the top of the cabin body, and an exhaust valve is installed at the exhaust port; the cabin body is provided with a first oxygen sensor and an air supply channel which are communicated with the cabin cavity, the cabin body is provided with an air outlet and an air return port, the air inlet end of the filtering device is connected with the air outlet, the air inlet end of the air driving device is connected with the air outlet end of the filtering device, and the air outlet end of the air driving device is connected with the air return port. The exhaust valve arranged at the top of the cabin body and the first oxygen sensor are linked in real time to monitor the oxygen content, inert gas with the density larger than that of oxygen is accurately supplemented through the gas supplementing channel, and the density difference of the inert gas is used for promoting oxygen to be enriched at the top of the cabin cavity and discharged through the exhaust valve in a directional mode; and the problem of oxygen permeation of the cabin body caused by aging of a sealing material is effectively solved.

Description

Technical Field

[0001] The present application relates to the field of 3D printing technology, and in particular to an atmosphere environment control system, a control method, and a printer. Background Art

[0002] As a key material in the field of additive manufacturing, TC4 titanium alloy powder is irreplaceable in high-end manufacturing scenarios such as aerospace and precision equipment. Its 3D printing process needs to be carried out in a strictly inerted low-oxygen environment to avoid the risk of explosion when the titanium powder is melted at high temperature. Existing inerting protection systems usually achieve oxygen concentration control through a sealed cabin combined with continuous replacement of inert gas. However, in actual industrial continuous production, it is found that after the equipment has been running for a long time, the oxygen content inside the cabin is prone to abnormal fluctuations and is difficult to maintain stably within the safety threshold; the traditional sealing structure design has the defect of insufficient sealing, and the flange interfaces and valve sealing surfaces of the inerting gas circulation pipeline are prone to wear and aging of the sealing materials, resulting in the formation of local oxygen penetration paths, causing the oxygen concentration in the cabin to gradually climb to the critical value, forcing production to be interrupted to perform secondary inerting ventilation operations. Summary of the Invention

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide an atmosphere environment control system, a control method and a printer.

[0004] To achieve the above objectives, the technical solutions adopted in this application are as follows: This application provides: An atmosphere environment control system, comprising: A cabin, the cabin having a cabin cavity, at least one exhaust port provided on the top of the cabin, an exhaust valve installed on the exhaust port, a first oxygen sensor and an air supply channel communicating with the cabin cavity provided on the cabin, and an air outlet and an air return port; A filter device, wherein the air inlet end of the filter device is connected to the air outlet, and the filter device is used to filter the gas; A gas driving device, wherein the air inlet end of the gas driving device is connected to the air outlet end of the filtering device, and the air outlet end of the gas driving device is connected to the air return port.

[0005] Furthermore, the exhaust valve includes: at least one solenoid valve, the solenoid valve being disposed on the top of the cabin body and communicating with the cabin cavity; A first oxygen sensor is fixedly arranged on the top of the cabin body, and is used to monitor the oxygen content in the cabin.

[0006] Furthermore, at least one air inlet channel is fixedly provided on the cabin body, and the air inlet channel is communicated with the cabin cavity.

[0007] Furthermore, a first valve body is provided in the pipeline between the cabin and the filtering device, and the filtering device includes a first filtering component and a second filtering component. The first filtering component is connected to the air outlet of the cabin, and the air outlet end of the first filtering component is connected to the air inlet end of the second filtering component.

[0008] Furthermore, the first filter assembly includes a first filter connected to the air outlet of the cabin, a sewage outlet of the first filter is connected to a first receiving box, and a second oxygen sensor is installed on the first filter.

[0009] Furthermore, the second filter assembly includes a second filter connected to the air outlet of the first filter assembly, a sewage outlet of the second filter is connected to a second storage box, and the second filter is connected to a third oxygen sensor and an air pressure sensor.

[0010] Furthermore, the gas outlet end of the gas driving device is connected to a cooler.

[0011] Furthermore, an air inlet is provided on the pipeline between the cabin and the filtering device.

[0012] The present application provides an atmosphere control method, which uses any of the above-mentioned atmosphere control systems, and the atmosphere control method includes: S100: real-time collection of oxygen content in the cabin cavity; S200: If the oxygen content in the cabin is greater than a preset content, an inert gas having a density greater than that of oxygen is delivered into the cabin; S300: If the cabin gas pressure is greater than the preset value of the safety valve, the oxygen collected at the top of the cabin will be discharged until the oxygen content inside the cabin is less than the preset content.

[0013] The present application also provides a printer, comprising any of the above-mentioned atmosphere environment control systems.

[0014] This application monitors the oxygen content in real time through the linkage between the exhaust valve set on the top of the cabin and the first oxygen sensor, and combines the air supply channel to accurately supplement the inert gas with a density greater than that of oxygen. The density difference of the inert gas is used to cause oxygen to be enriched at the top of the cabin cavity and discharged in a direction by the exhaust valve. At the same time, a closed-loop circulation purification system is constructed through a filtering device and a gas drive device. While continuously removing printing dust, the gas flow pressure balance is maintained, which effectively solves the oxygen permeation problem caused by the aging of the sealing material of the traditional sealed cabin, so that the oxygen content in the cabin cavity is stably controlled within the safety threshold, ensuring the continuity and safety of the titanium alloy powder 3D printing process.

[0015] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 Shows a schematic diagram of the overall structure of this application; Figure 2 The schematic diagram of the cabin structure in a top-down state of the present application is shown; Figure 3 A schematic diagram of the control method of the present application is shown.

[0018] Description of main component symbols: 100-cabin; 110-exhaust valve; 111-solenoid valve; 112-safety valve; 120-first oxygen sensor; 130-air supply channel; 140-intake channel; 101-first valve body; 102-second valve body; 103-third valve body; 200-filter device; 210-first filter assembly; 211-first filter; 212-first storage box; 213-second oxygen sensor; 220-second filter assembly; 221-second filter; 222-second storage box; 223-third oxygen sensor; 224-air pressure sensor; 300-gas drive device; 400-cooler; 500-air inlet. DETAILED DESCRIPTION

[0019] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0022] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0023] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0024] The present application provides an atmosphere environment control system, which includes a control system capsule 100 , a filtering device 200 and a gas driving device 300 .

[0025] In some specific embodiments, the cabin body 100 has a cabin cavity, at least one exhaust port is provided on the top of the cabin body 100, and an exhaust valve 110 is installed on the exhaust port. The cabin body 100 is provided with a first oxygen sensor 120 and an air supply channel 130 connected to the cabin cavity. The cabin body 100 has an air outlet and an air return port. The air inlet end of the filter device 200 is connected to the air outlet, and the filter device 200 is used to filter the gas. The air inlet end of the gas drive device 300 is connected to the air outlet end of the filter device 200, and the air outlet end of the gas drive device 300 is connected to the air return port.

[0026] In this embodiment, an inert gas is filled into the cabin 100 to prevent dangerous accidents such as fire or explosion caused by the material combining with oxygen due to high temperature during printing. That is, 3D printing technology is used to print and shape objects in an inert gas environment. Specifically, in order to facilitate the acquisition of inert gas, the inert gas in this embodiment is argon. Argon is used as the inert gas in the following description. Since the density of argon is greater than the density of air and the density of oxygen, oxygen will float in the upper layer in the cabin 100, while argon will sink to the lower layer. Therefore, by utilizing the characteristics of this density difference, when discharging oxygen, a hole can be opened at the top of the cabin 100 to discharge oxygen.

[0027] In this embodiment, the first oxygen sensor 120 is fixedly arranged on the top of the cabin 100. It can be understood that since the density of oxygen is less than the density of argon, argon will be deposited at the bottom, and oxygen will float above the argon, that is, it will float on the top of the cabin cavity. The oxygen content at the top of the cabin cavity is the largest, and the measured value is the largest. If the measured oxygen content at the top of the cabin cavity is lower than the preset content, it means that the oxygen content in the entire cabin cavity is lower than the preset content, thereby meeting the gas environment required for printing objects.

[0028] Furthermore, in order to accurately measure the oxygen content, a plurality of evenly distributed first oxygen sensors 120 can be fixedly installed on the upper surface of the cabin 100. In this embodiment, two first oxygen sensors 120 are arranged diagonally on the upper surface of the cabin 100. The number of first oxygen sensors 120 can also be three, four, five, etc. The specific number is not limited here.

[0029] See also Figure 1As shown, the oxygen content in the cabin 100 is monitored in real time by the first oxygen sensor 120, so as to prevent the oxygen content from increasing and affecting the printing quality of the article. Furthermore, in this embodiment, if the oxygen content in the cabin 100 is too high, argon gas can be gradually injected into the cabin cavity of the cabin 100 through the air supply channel 130 to reduce the oxygen content. As the gas in the cabin 100 increases, the gas pressure in the cabin cavity increases. In this process, since the density of oxygen is less than that of argon gas, it will float on the top of the cabin cavity. In order to prevent the cabin 100 from rupturing due to excessive air pressure, when the air pressure in the cabin cavity is greater than a certain value, the exhaust valve 110 will automatically open to release the oxygen at the top and discharge the oxygen in the cabin cavity until the oxygen content in the cabin cavity is within the preset value range, thereby avoiding explosion accidents caused by the reaction of titanium alloy powder with oxygen.

[0030] Please continue reading Figure 1 As shown, during the printing process of the product, in order to prevent the dust in the cabin cavity from affecting the printing quality of the product, a filter device 200 and a gas drive device 300 are set on the pipeline between the air outlet and the return air port of the cabin body 100. The gas in the cabin body 100 circulates back to the return air port position after passing through the filter device 200 and the gas drive device 300, and finally returns to the cabin body 100. It can be understood that the powder particles that may exist in the gas are filtered by the filter device 200, so that the gas in the cabin body 100 is kept clean, providing a clean environment for product printing, thereby increasing the quality of product printing, and the gas drive device 300 provides power for the flow of gas.

[0031] Illustratively, the gas driving device 300 is a fan, specifically an axial flow fan or other types of fans, and the type of the fan is not limited here.

[0032] In other embodiments, the first oxygen sensor 120 may also be replaced by an argon content sensor or a measuring instrument. Accordingly, the argon concentration needs to meet the requirements to provide a gas environment for printing. The following takes the first oxygen sensor 120 as an oxygen sensor as an example.

[0033] In some specific embodiments, the exhaust valve 110 includes at least one solenoid valve 111 and a safety valve 112 arranged on the cabin body 100, the solenoid valve 111 is arranged on the top of the cabin body 100, the solenoid valve 111 is connected to the cabin cavity, and the safety valve 112 is fixedly arranged on the top of the cabin body 100, and the safety valve 112 is used to automatically discharge the gas in the cabin cavity.

[0034] In this embodiment, the solenoid valve 111 can be automatically opened or closed remotely to release the gas in the cabin 100. Specifically, when the cabin cavity is first discharged with oxygen and other gases, the solenoid valve 111 can be started by a control system adapted thereto so that it is always in an open state to discharge the oxygen in the cabin cavity and allow the argon gas to remain in the cabin cavity, thereby providing a corresponding gas environment for printing objects. In addition, during the first process of passing argon gas through the cabin cavity of the cabin 100, the first oxygen sensor 120 monitors the oxygen content inside it in real time until the oxygen content measured by the first oxygen sensor 120 meets the preset value, and then the solenoid valve 111 is closed to seal the outlet to prevent the argon gas from leaking out.

[0035] In this embodiment, there are two solenoid valves 111 in total to accelerate gas discharge.

[0036] Exemplarily, the safety valve 112 is a mechanical valve body. The safety valve 112 may be a pressure relief valve, which opens to relieve pressure when a certain pressure is reached and closes when the pressure is less than a predetermined pressure value.

[0037] See also Figure 1 and Figure 2 As shown, the solenoid valve 111 can be actively opened and closed by a corresponding controller. When the oxygen content increases and cannot meet the use requirements during the printing process of the product, new argon gas needs to be injected into the cabin cavity of the cabin body 100 through the air supply channel 130 to reduce the oxygen content in the cabin cavity. It can be understood that as argon gas continuously enters the cabin cavity, the gas pressure in the cabin cavity continues to increase. When the gas pressure is greater than the value set by the safety valve 112, the safety valve 112 will automatically open its outlet. At this time, the oxygen at the top of the cabin cavity will be discharged through the outlet at the position of the safety valve 112. After the oxygen content in the cabin cavity meets the preset content, the injection of argon gas into the cabin cavity through the air supply channel 130 is stopped, so that argon gas can be injected into the cabin cavity in real time according to the oxygen content, and automatic exhaust can be achieved through the safety valve 112 to prevent the gas pressure in the cabin cavity from being too high and causing damage to the entire device.

[0038] In some specific embodiments, at least one air inlet channel 140 is fixedly provided on the cabin body 100 , and the air inlet channel 140 is connected to the cabin cavity.

[0039] Please continue reading Figure 1 and Figure 2As shown, in this embodiment, the cabin body 100 is rectangular when viewed from above, that is, the cabin body 100 is a cuboid. When the gas in the cabin cavity of the cabin body 100 is replaced, that is, the oxygen or other gases in the cabin cavity are replaced by argon gas, so that the argon content in the cabin cavity meets the printing requirements. In order to speed up the replacement speed, two air inlet channels 140 are provided on both sides of the cabin body 100 in opposite directions. The four air inlet channels 140 are used to speed up the injection speed of argon gas and reduce the gas replacement time in the cabin cavity. The two air inlet channels 140 on each side are connected to a three-way connector, and the argon gas is divided into two by the three-way connector to provide a gas source for the two air inlet channels 140 on each side, thereby simplifying the argon gas supply pipeline and reducing the complexity of the pipeline layout.

[0040] In some specific embodiments, a first valve body 101 is provided in the pipeline between the cabin 100 and the filter device 200, and the filter device 200 includes a first filter component 210 and a second filter component 220, the first filter component 210 is connected to the air outlet of the cabin 100, and the air outlet end of the first filter component 210 is connected to the air inlet end of the second filter component 220.

[0041] See also Figure 1 As shown, during the product printing process, since titanium alloy powder is used as the printing material, corresponding dust and particles will be generated during the printing process. Therefore, during the argon gas circulation process, it is necessary to filter out the dust and particles in the gas through the filter device 200 to prevent these dust and particles from affecting the quality of product printing.

[0042] Specifically, in order to improve the filtering effect of dust particles, the present application adopts double filtration, that is, a first filter component 210 and a second filter component 220 are used to achieve filtration, so as to ensure the cleanliness of the argon gas during the circulation process.

[0043] In some specific embodiments, the first filter assembly 210 includes a first filter 211 connected to the air outlet of the cabin 100 , a sewage outlet of the first filter 211 is connected to a first receiving box 212 , and a second oxygen sensor 213 is installed on the first filter 211 .

[0044] See also Figure 1 As shown, the argon gas from the cabin cavity of the cabin body 100 is first filtered through the first filter 211 to filter the particles in the gas, and the filtered particles are collected through the first storage box 212. The gas after the initial treatment is then transported to the second filter assembly 220 for filtration treatment. During the treatment process, the oxygen content of the argon gas in the first filter 211 is detected by the second oxygen sensor 213 located on the top of the first filter 211, thereby realizing multi-position detection of the oxygen content to ensure the accuracy of the detection.

[0045] Illustratively, the first filter 211 is a cyclone filter.

[0046] In some specific embodiments, the second filter component 220 includes a second filter 221 connected to the air outlet of the first filter component 210, the sewage outlet of the second filter 221 is connected to a second storage box 222, and the second filter 221 is connected to a third oxygen sensor 223 and an air pressure sensor 224.

[0047] Please continue reading Figure 1 As shown, in order to further filter the dust particles in the gas, the second filter 221 is connected to the gas outlet end of the first filter 211. The second filter 221 collects the dust particles after filtering the gas through the second storage box 222, and the third oxygen sensor 223 on the second filter 221 monitors the oxygen content in the gas in real time. The third oxygen sensor 223, the second oxygen sensor 213 and the first oxygen sensor 120 cooperate in measurement to improve the accuracy of oxygen content measurement, and the air pressure sensor 224 is used to detect the gas pressure in the entire gas path.

[0048] Exemplarily, the second filter 221 is a ceramic filter.

[0049] In some specific embodiments, the gas outlet end of the gas driving device 300 is connected to a cooler 400 .

[0050] See also Figure 1 As shown, heat is generated during product printing. In order to prevent the temperature in the chamber from rising and affecting the printing quality, the argon gas is cooled by the cooler 400 during the gas circulation process to reduce the temperature of the argon gas.

[0051] Exemplarily, the cooler 400 may be a snake-shaped gas cooler. Of course, other cooling devices capable of cooling gas may also be used, and the specific type is not limited here.

[0052] In some specific embodiments, an air inlet 500 is provided on the pipeline between the cabin 100 and the filtering device 200 .

[0053] Please continue reading Figure 1As shown, when the gas in the cabin cavity is replaced for the first time, since the cabin cavity is connected to the corresponding circulating gas pipeline, in order to enable the cabin cavity and the pipeline to be replaced with argon, the pipeline is also replaced with gas during the process of ventilating the cabin cavity through the air inlet channel 140. Specifically, an air inlet 500 is provided on the pipeline between the filter device 200 and the cabin body 100, that is, the air inlet 500 is provided on the connecting pipeline between the first filter 211 and the cabin body 100. While the air inlet channel 140 introduces argon into the cabin cavity of the cabin body 100, argon is introduced into the filter device 200 and the pipeline and components between the filter device 200 and the return air port through the air inlet 500 to achieve gas replacement.

[0054] In this embodiment, a first valve body 101 is provided on the pipeline connecting the first filter 211 and the air outlet of the cabin 100, and a second valve body 102 and a third valve body 103 are provided on the pipeline connecting the cooler 400 and the return air port of the cabin 100. The second valve body 102 is provided at one end close to the cooler 400, and the third valve body 103 is provided at one end close to the cabin 100.

[0055] It can be understood that when the gas replacement process is initially carried out, the first valve body 101 can be closed and the second valve body 102 and the third valve body 103 can be opened. The argon gas enters the filter device 200, the gas drive device 300, the cooler 400 and the pipelines therebetween through the air inlet 500, and finally enters the cabin cavity of the cabin body 100 through the pipeline between the cooler 400 and the return air port, and transports the oxygen and other gases in the pipelines and various components to the cabin cavity of the cabin body 100, and finally is discharged through the solenoid valve 111 on the top of the cabin body 100, thereby realizing the replacement of the gas in the various components and pipelines, so that the argon gas fills the various components and pipelines. During this process, the air intake channel 140 also introduces argon into the cabin cavity of the cabin body 100 to achieve gas replacement inside it. Furthermore, in order to reduce the waste of argon, since oxygen will enter the cabin cavity of the cabin body 100 and finally be discharged through the solenoid valve 111 during the gas replacement process of the pipelines and various components, the oxygen content in each component and pipeline can reach the preset content, and then the gas in the cabin body 100 can be replaced through the air intake channel 140. It can be understood that the second oxygen sensor 213 and the third oxygen sensor 223 can be used to detect the oxygen content of the first filter 211 and the second filter 221. Furthermore, corresponding oxygen content sensors can be installed in each pipeline and component to achieve accurate measurement of the oxygen content.

[0056] In one embodiment, if the oxygen content in each component and pipeline reaches a preset value, the first valve body 101 can be opened to connect the cabin 100 with the filter device 200, and at the same time, the gas drive device 300 can be started to circulate the gas inside it.

[0057] like Figure 3 As shown, the present application provides an atmosphere environment control method, which applies any of the above-mentioned atmosphere environment control systems, and the atmosphere environment control method includes: S100: Real-time collection of oxygen content in the cabin cavity of the cabin 100. Specifically, the oxygen content in the cabin cavity is monitored in real time by a first oxygen sensor 120 on the top of the cabin 100. The first oxygen sensor 120 transmits the collected oxygen content information to a controller, which controls whether to introduce inert gas into the cabin cavity of the cabin 100 through the air supply channel 130. S200: If the oxygen content in the cabin cavity is greater than a preset content, an inert gas having a density greater than that of oxygen is delivered into the cabin cavity. The controller controls the inert gas to be delivered to the cabin body 100 through the gas supply channel 130. In this embodiment, the inert gas can be a gas having a density greater than that of oxygen, such as argon. Since the density of argon is greater than that of oxygen, oxygen will float above the inert gas. S300: If the gas pressure in the cabin is greater than the preset value of the safety valve 112, the oxygen gathered at the top of the cabin will be discharged until the oxygen content inside the cabin is less than the preset content. As the argon gas is continuously transported into the cabin, the gas pressure value inside the cabin increases. When the gas pressure is greater than the preset value of the safety valve 112, the safety valve 112 will open its opening to discharge the oxygen above the argon gas, thereby reducing the oxygen content and keeping the oxygen content below the preset value, thereby preventing the occurrence of explosions caused by the reaction of titanium alloy powder with oxygen.

[0058] In this embodiment, a corresponding valve body that can be controlled to open and close can be installed on the air supply channel 130, and specifically, it can be an electromagnetic valve body.

[0059] Exemplarily, the controller may include components such as a processor, a memory, and a circuit board, so as to process data and control corresponding components.

[0060] An embodiment of the present application also provides a printer, which includes any of the above-mentioned atmosphere environment control systems. It can be understood that since the printer includes the above-mentioned control system, the printer has all the technical effects of the atmosphere environment control system.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0062] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An atmosphere environment control system, characterized in that: include: A cabin (100), the cabin (100) having a cabin cavity, at least one exhaust port being provided on the top of the cabin (100), an exhaust valve (110) being installed on the exhaust port, a first oxygen sensor (120) and an air supply channel (130) being provided on the cabin (100) and communicating with the cabin cavity, and the cabin (100) having an air outlet and an air return port; A filter device (200), wherein the air inlet end of the filter device (200) is connected to the air outlet, and the filter device (200) is used to filter gas; A gas driving device (300), wherein the gas inlet end of the gas driving device (300) is connected to the gas outlet end of the filter device (200), and the gas outlet end of the gas driving device (300) is connected to the gas return port.

2. The atmosphere environment control system according to claim 1, characterized in that: The exhaust valve (110) includes: at least one solenoid valve (111), the solenoid valve (111) being disposed on the top of the cabin (100), the solenoid valve (111) being in communication with the cabin cavity; A safety valve (112) is fixedly arranged on the top of the cabin (100), and the safety valve (112) is used to automatically discharge the gas in the cabin cavity.

3. The atmosphere control system according to claim 1, characterized in that: At least one air intake channel (140) is fixedly provided on the cabin body (100), and the air intake channel (140) is in communication with the cabin cavity.

4. The atmosphere environment control system according to claim 1, characterized in that: A first valve body (101) is provided in a pipeline between the cabin (100) and the filter device (200). The filter device (200) comprises a first filter assembly (210) and a second filter assembly (220). The first filter assembly (210) is connected to the air outlet of the cabin (100), and the air outlet end of the first filter assembly (210) is connected to the air inlet end of the second filter assembly (220).

5. The atmosphere control system according to claim 4, characterized in that: The first filter assembly (210) comprises a first filter (211) connected to the air outlet of the cabin (100), a sewage outlet of the first filter (211) is connected to a first storage box (212), and a second oxygen sensor (213) is installed on the first filter (211).

6. The atmosphere control system according to claim 4, characterized in that: The second filter assembly (220) comprises a second filter (221) connected to the air outlet of the first filter assembly (210); a sewage outlet of the second filter (221) is connected to a second storage box (222); and the second filter (221) is connected to a third oxygen sensor (223) and an air pressure sensor (224).

7. The atmosphere environment control system according to claim 1, characterized in that: The gas outlet end of the gas driving device (300) is connected to a cooler (400).

8. The atmosphere environment control system according to claim 1, characterized in that: An air inlet (500) is provided on the pipeline between the cabin (100) and the filtering device (200).

9. A method for controlling an atmosphere, characterized in that: Applying the atmosphere control system according to any one of claims 1 to 8, the atmosphere control method comprises: Real-time collection of oxygen content in the cabin cavity of the cabin (100); If the oxygen content in the cabin is greater than the preset content, an inert gas with a density greater than that of oxygen is delivered into the cabin; If the gas pressure in the cabin is greater than the preset value of the safety valve (112), the oxygen collected at the top of the cabin will be discharged until the oxygen content inside the cabin is less than the preset content.

10. A printer, characterized in that: The atmospheric environment control system comprises the atmospheric environment control system according to any one of claims 1 to 8.

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