Stir-frying machine suitable for microgravity and closed space environment

Abstract

The invention belongs to the field of space cooking equipment, and particularly relates to a frying machine suitable for microgravity and closed space environments, which comprises an elliptical annular wind tunnel structure, a circular truncated cone-shaped centrifugal heating cylinder module, a plurality of solid food material injection bin modules, a liquid injection module, a pot discharge device module and a vacuum pressure regulation module, the oval annular wind tunnel structure comprises a first wind tunnel section, a second wind tunnel section, a third wind tunnel section and fourth wind tunnel sections, the solid food material injection bin module is arranged on the surface of the third wind tunnel section, the third wind tunnel section is provided with an axial flow fan close to the first wind tunnel section, and the circular-truncated-cone-shaped centrifugal heating cylinder module is axially connected between the fourth wind tunnel sections. The plurality of liquid spraying modules are arranged on the surface of the second wind tunnel section, the second wind tunnel section is provided with a pot discharging device module close to the tangential direction of the fourth wind tunnel section, and the vacuum pressure adjusting module is connected with the solid food material injection bin module and the pot discharging device module. The environment cleanness is ensured.

Description

Technical Field

[0001] This invention belongs to the field of space cooking equipment, specifically relating to a stir-fry machine suitable for microgravity and enclosed space environments. Background Technology

[0002] With the deepening of space exploration, providing suitable nutrition for astronauts has become a key issue. Currently, space food mainly consists of "pre-prepared" foods made on Earth, which are limited in variety, have poor taste, and cannot meet the diverse nutritional and flavor needs of astronauts during long-term space missions. Although some heating equipment exists for reheating space food, it lacks true cooking functionality. Furthermore, existing astronaut food cooking equipment is not suitable for stir-frying, a crucial food preparation method in Chinese cuisine. Traditional terrestrial stir-frying equipment cannot adapt to the microgravity environment in space, resulting in problems such as smoke diffusion, food floating, and increased operational difficulty. Therefore, developing a stir-frying machine that can operate stably in the space environment is particularly important.

[0003] Currently, the closest stir-fry machines on the market to meet these needs mainly use robotic arms for stirring, during which the ingredients automatically return to the bottom of the pot due to gravity. However, in a microgravity environment, this stirring method often struggles to control the even heating of the ingredients. Furthermore, the open design of current stir-fry machines allows fumes to easily spread, affecting air quality in enclosed spaces such as space stations and lunar research stations. In addition, the structural design of existing stir-fry machines does not adequately consider the convenience of ingredient loading and unloading.

[0004] Specifically, the problems with existing technologies mainly include the following points.

[0005] Poor control of cooking fumes: In the microgravity environment of space, cooking fumes are prone to spread everywhere, which not only affects air quality, but may also damage the equipment inside the cabin.

[0006] Uneven stirring: Because existing stir-fry machines are designed for normal gravity environments, they lack an effective stirring mechanism for microgravity environments. In microgravity environments, it is difficult to achieve uniform heating of ingredients, thus affecting the taste and quality of the dishes.

[0007] Complex operation: Food preparation in the microgravity environment of space needs to be as simple and reliable as possible, but the operation of existing frying machines is relatively complex, and most of them require manual addition of ingredients and seasonings, which is not conducive to astronauts' use in space.

[0008] Therefore, how to provide a stir-frying machine that can achieve oil fume control and stir-frying uniformity, and is specifically designed for microgravity and enclosed space environments, has become a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0009] To address the problems existing in the prior art, this invention discloses a stir-frying machine suitable for microgravity and enclosed space environments. This invention ensures a high degree of consistency between stir-frying efficiency and food quality under microgravity conditions through a special stirring mechanism. Its unique "internal circulation" design effectively prevents oil fume leakage, ensures a clean environment in the enclosed space, and provides safe and healthy food preparation conditions. Specifically, this invention discloses the following technical solutions: A stir-frying machine suitable for microgravity and enclosed space environments includes an elliptical annular wind tunnel structure, a frustum-shaped centrifugal heating cylinder module, several solid food injection chamber modules, several liquid spraying modules, a wok discharge device module, a vacuum pressure regulating module, and a control computer that controls the entire process. The two bent pipes at the ends of the elliptical annular wind tunnel structure are the first and second wind tunnel sections, respectively, and the straight pipes on both sides are the third and fourth wind tunnel sections, respectively. The solid food injection chamber module is disposed on the surface of the third wind tunnel section. An axial flow fan is installed on the third wind tunnel section near the first wind tunnel section. The frustum-shaped centrifugal heating cylinder module is axially connected between the fourth wind tunnel sections. Several liquid spraying modules are disposed on the surface of the frustum-shaped centrifugal heating cylinder module. The second wind tunnel section has an extension section in the tangential direction near the fourth wind tunnel section, into which the wok discharge device module is inserted and installed. The vacuum pressure regulating module is connected to the solid food injection chamber module and the wok discharge device module, respectively.

[0010] Furthermore, the solid food injection chamber module includes an injection cylinder and an injection piston. The bottom opening of the injection cylinder is connected to the third wind tunnel section. The injection piston is slidably disposed in the injection cylinder. The injection piston has a barbell structure, including a connecting rod and a first piston plate and a second piston plate disposed at both ends of the connecting rod. The closed section of the injection cylinder is equipped with a pressure sensor and a distance sensor for measuring the pressure inside the injection cylinder and the position of the piston.

[0011] Furthermore, the frustum-shaped centrifugal heating cylinder module includes a heating cylinder body, a stirrer assembly, and a flow guide. The heating cylinder body has a frustum-shaped structure, including a converging end and an open end. The converging end is connected to the first wind tunnel section, and the open end is connected to the flow guide. The stirrer assembly is disposed inside the heating cylinder body, and an electric heater and a temperature sensor are disposed on the inner wall of the heating cylinder body.

[0012] Furthermore, the agitator assembly includes a ring motor, a mesh, and blades. The blades are arranged along the inner side of the heating cylinder, narrowing from a converging end to a widening end, and are fixed to the mesh at the bottom. The cross-section of the blades fits the heating cylinder. The diameter of the mesh is the same as the inner diameter of the motor rotor. The flow guide is a Laval nozzle-shaped hourglass structure. The air inlet of the flow guide is connected to the second wind tunnel section, and the exhaust port is connected to the heating cylinder. The liquid injection module is mounted on the flow guide.

[0013] Furthermore, the liquid injection module includes a liquid storage tank, an injection pump, a filter, a pressure regulator, and a nozzle. The injection pump and pressure regulator are mounted on the liquid storage tank, the filter is installed inside the liquid storage tank, and the nozzle is installed at the end of the liquid storage tank, with the nozzle facing the heating cylinder through an opening in the outer wall of the flow guide.

[0014] Furthermore, the unloading device module includes a pipe, a finished product output pump, and an electrically controlled valve. The pipe is inserted into the tangential extension section of the second wind tunnel section. The inlet of the finished product output pump is connected to the pipe. A first linear motor is installed inside the outer wall of the pipe to control the insertion depth of the unloading device module into the extension section. The rotor of the finished product output pump is driven by the output pump motor through a magnetic coupler. The electrically controlled valve is installed at the air extraction port of the finished product output pump. The outlet of the finished product output pump is connected to a vacuum packaging machine.

[0015] Furthermore, it also includes an outlet piston and a piston slide rail. The piston slide rail is set on the inner wall of the finished product output pump, and the outlet piston is slidably set on the piston slide rail. The contact surface between the outlet piston and the piston slide rail is a magnet. The piston slide rail has a built-in second linear motor coil for controlling the piston position. The top of the outlet piston is set in a conical shape. When the outlet piston is in the outermost position, it acts as a guide cone to guide part of the airflow to the central axis.

[0016] Furthermore, the vacuum pressure regulating module includes a vacuum pump, a vacuum collection tank, and a pressurized gas tank. The vacuum pump is provided with an inlet and an outlet, which are respectively connected to the vacuum collection tank and the pressurized gas tank to maintain the pressurized and vacuum states of the two respectively.

[0017] Furthermore, the vacuum collection tank is equipped with two inlets and two outlets. The two outlets are respectively connected to the vacuum pump and the water treatment circulation system in the facility, and the two inlets are respectively connected to the exhaust solenoid valve of the solid food injection chamber module and the exhaust solenoid valve of the unloading device module. The vacuum collection tank has built-in pressure sensors and capacity sensors to provide data input to the control computer.

[0018] Furthermore, the inlet of the pressurized gas tank is connected to the outlet of the vacuum pump, and the outlet of the pressurized gas tank is connected to the air intake control valve of the solid food injection chamber module.

[0019] The beneficial effects of this invention are as follows: This invention combines a frustum-shaped centrifugal heating cylinder with an axial flow wind tunnel-type stir-frying device to achieve uniform stir-frying of ingredients under microgravity conditions. Through a wind tunnel-type internal circulation system, precise oil injection and temperature control mechanisms, and an integrated fume treatment device, this invention effectively reduces the generation of oil fumes and completely seals them inside the stir-frying machine. Furthermore, the addition of ingredients utilizes the airflow generated by the internal circulation wind tunnel; solid ingredients are injected through an airlock-type injection chamber, while liquid ingredients are automatically fed into the centrifugal heating cylinder through nozzles. This can be completed with only a program-controlled release device, significantly simplifying the food preparation process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the solid food injection module of the present invention; Figure 3 This is a cross-sectional perspective view of the heating cylinder body and the flow guide shroud of the frustum-shaped centrifugal heating cylinder module of the present invention; Figure 4 This is a three-dimensional cross-sectional view of the heating cylinder body of the frustum-shaped centrifugal heating cylinder module of the present invention from another angle; Figure 5 This is a cross-sectional perspective view of the pipeline and finished product output pump of the unloading device module of the present invention.

[0021] Wherein: 1-First wind tunnel section; 2-Second wind tunnel section; 3-Third wind tunnel section; 4-Fourth wind tunnel section; 5-Axial flow fan; 6-Injection cylinder; 7-First piston plate; 8-Connecting rod; 9-Second piston plate; 10-Heating cylinder; 11-Guide shroud; 12-Ring motor; 13-Grid; 14-Blade; 15-Liquid injection module; 16-Pipeline; 17-Outlet piston; 18-Finish product output pump; 19-Outlet pump motor; 20-Magnetic coupler; 21-Vacuum pump; 22-Vacuum collection tank; 23-Pressurized gas tank; 24-Extension section; 25-Piston slide rail. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1

[0024] See attached document Figure 1-5This embodiment discloses a stir-frying machine suitable for microgravity and enclosed space environments, including an elliptical annular wind tunnel structure, a frustum-shaped centrifugal heating cylinder module, several solid food injection chamber modules, several liquid spraying modules 15, a wok discharge device module, a vacuum pressure regulating module, and a control computer that controls the entire process.

[0025] In this embodiment, the elliptical annular wind tunnel structure serves as the main frame of the stir-fry machine. Other modules and components are installed on the elliptical annular wind tunnel structure. Specifically, the two ends of the long axis of the elliptical annular wind tunnel structure are the first wind tunnel section 1 and the second wind tunnel section 2, which are semi-circular tubular structures. The straight pipes on both sides are the third wind tunnel section 3 and the fourth wind tunnel section 4, respectively. Temperature sensors, flow sensors, and humidity sensors are installed in the first wind tunnel section 1. Temperature sensors, flow sensors, humidity sensors, and solid volume sensors are installed in the second wind tunnel section 2. An extension section 24 is provided on the side of the second wind tunnel section 2 near the fourth wind tunnel section 4, which is used to insert and install the pot-discharging device module. A shaftless axial flow fan 5 is installed in the third wind tunnel section 3 near the first wind tunnel section 1. The rotor of the shaftless axial flow fan 5 is connected to the fan blades and placed inside the third wind tunnel section 3. The stator is correspondingly set outside the wind tunnel. The third wind tunnel section 3 is provided with an opening for connecting the solid food injection chamber module.

[0026] The solid food injection chamber module is used to inject solid food, including an injection cylinder 6 and an injection piston. Specifically, the bottom opening of the injection cylinder 6 is connected to the third wind tunnel section 3. The injection piston is slidably disposed inside the injection cylinder 6. In this embodiment, the injection piston has a barbell structure, which can slide in and out from the opening. The injection piston includes a connecting rod 8 and a first piston plate 7 and a second piston plate 9 disposed at both ends of the connecting rod 8. The food is temporarily stored between the two piston plates before release. Two mounting holes are opened at the top of the injection cylinder 6 for connecting an electronically controlled valve. The closed section inside the injection cylinder 6 is also equipped with a pressure sensor and a distance sensor, which are used to measure the internal pressure and the position of the injection piston, respectively.

[0027] In this embodiment, the frustum-shaped centrifugal heating cylinder module is axially connected between the fourth wind tunnel sections 4. The frustum-shaped centrifugal heating cylinder module includes a heating cylinder body 10, a stirrer assembly, and a flow guide shroud 11. The heating cylinder body 10 has a frustum-shaped structure with an angle of 15-45° to the frustum surface, forming a converging end and an open end. The converging end of the heating cylinder body 10 is connected to the first wind tunnel section 1, and the open end is connected to the flow guide shroud 11. An electric heater and a temperature sensor are provided on the inner wall of the heating cylinder body 10.

[0028] The agitator assembly includes a ring motor 12, a grid 13, and blades 14. The cross-sectional shape of the blades 14 fits the inner side of the heating cylinder 10, narrowing from a constricted end to a widened end. In this embodiment, the blades 14 are preferably helical, with the bottom fixed to the grid 13. Preferably, in this embodiment, the grid 13 has an inner ring with radial stripes and an outer ring with perforated plates, and the diameter of the grid 13 is the same as the inner diameter of the motor rotor (ring). The guide shroud 11 is hourglass-shaped, similar to a Laval nozzle, with the air inlet connected to the second wind tunnel section 2 and the exhaust port connected to the heating cylinder 10. The exhaust section of the guide shroud 11 is hourglass-shaped, with an opening between the constricted part and the exhaust port for connecting 1-20 liquid injection modules 15. The frustum-shaped centrifugal heating cylinder module provides temperature and motor speed data input to the control computer and receives heating power and motor speed control signals output by the control computer.

[0029] The liquid injection module 15 employs an existing electronic fuel injection system, including a liquid storage tank, an injection pump, a filter, a pressure regulator, and nozzles. The injection pump and pressure regulator are mounted on the liquid storage tank, the filter is installed inside the liquid storage tank, and the nozzles are installed at the end of the liquid storage tank, facing the heating cylinder 10 through openings in the outer wall of the flow guide shroud 11. The nozzles, pressure regulator, and injection pump are all electrically connected to a control computer, and the injection volume of each nozzle is controlled and monitored by the control computer.

[0030] The unloading device module includes a pipe 16, an unloading piston 17, a piston slide rail 25, a finished product output pump 18, and an electrically controlled valve. In this embodiment, the pipe 16 is inserted into the tangential extension of the second wind tunnel section 2. The finished product output pump 18 is a centrifugal pump. The inlet of the finished product output pump 18 is connected to the pipe 16. A linear motor is built into the outer wall of the pipe 16 to control the insertion depth of the unloading device module. The rotor of the finished product output pump 18 is driven by the output pump motor 19 through a magnetic coupler 20. The outlet of the finished product output pump 18 can be connected to packaging equipment such as a vacuum packaging machine. The electrically controlled valve is installed at the exhaust port of the finished product output pump 18. The piston slide rail 25 is set on the inner wall of the finished product output pump 18. The unloading piston 17 is slidably set on the piston slide rail 25. The contact surface between the unloading piston 17 and the piston slide rail 25 is a magnet. The piston slide rail 25 has a built-in linear motor coil for controlling the piston position. The top of the discharge piston 17 is conical. When the discharge piston 17 is in its outermost position, it acts as a guide cone to direct part of the airflow to the central axis. In this embodiment, the module insertion depth and the position of the discharge piston 17 are controlled by the control computer.

[0031] The vacuum pressure regulation module in this embodiment includes a vacuum pump 21, a vacuum collection tank 22, and a pressurized gas tank 23. The vacuum pump 21 has an inlet and an outlet, which are connected to the vacuum collection tank 22 and the pressurized gas tank 23 respectively, to maintain the pressurized and vacuum states of both. The vacuum collection tank 22 has two inlets and two outlets, with the two outlets connected to the vacuum pump 21 and the water treatment circulation system within the facility, respectively. The two inlets are connected to the exhaust control valve of the solid food injection chamber module and the exhaust control valve of the unloading device module, respectively. It also has built-in pressure and capacity sensors to provide data input to the control computer. The inlet of the pressurized gas tank 23 is connected to the outlet of the vacuum pump 21, and the outlet of the pressurized gas tank 23 is connected to the inlet control valve of the solid food injection chamber module.

[0032] The method for preparing Chinese-style stir-fry using a stir-frying machine suitable for microgravity and enclosed space environments, as described in this embodiment, includes the following three stages: 1. Preparation stage, including the following steps: (1) Recipe input: The software converts the natural language recipe into the corresponding program of the frying machine. The general rules are: the amount of ingredients and seasonings are the same as the recipe; the timing of ingredient release is the same; the amount of oil sprayed is 1 / 5 to 1 / 20 of the recipe; the temperature is reduced by 0% to 20% relative to the recipe; and the food preparation time is extended by 0% to 10%. The specific offset will be optimized based on feedback from consumers in actual use.

[0033] (2) Install the solid food ingredient injection tank module: Load the ingredients required for the recipe into the injection tank according to the amount, and connect the injection tank to the corresponding interface.

[0034] (3) Set up the program and start it: Operate the program and start the device.

[0035] 2. The food preparation stage includes the following steps: (4) Equipment Start-up and Preheating: The computer control system starts the vacuum pump, maintaining the low pressure in the vacuum collection tank at 0.01-0.1 MPa and the pressure in the pressurized gas tank at 0.7-1.2 MPa; the axial flow fan and agitator assembly are started to idle speed. Figure 1 As shown, the wind direction in the fourth wind tunnel section is from the interface with the second wind tunnel section to the interface with the first wind tunnel section, while the wind direction in the third wind tunnel section is the opposite. The direction of rotation of the agitator assembly is that its blades face the wind direction. The unloading device module moves to the farthest end of the extension section through the pipeline, and the unloading piston extends to the farthest point of the piston slide rail. The heating cylinder is started to preheat until the required temperature for food preparation is reached (depending on the recipe).

[0036] (5) Food preparation: The ingredients are released according to the program and oil, water, liquid seasonings, etc. are sprayed. During the process, the pot discharge device module is adjusted to the middle position, but it will retract to the farthest end before any ingredients are released to facilitate the passage of ingredients. The heating temperature, fan and stirrer assembly speed are adjusted in real time according to the recipe until the program is completed.

[0037] 3. The unloading stage includes the following steps: (6) Preparation for unloading: Stop heating; stop the fan and agitator assembly; insert the pipe of the unloading device module into the deepest part of the extension section, that is, connect it with the middle of the guide shroud; open the electric control valve of the unloading device module.

[0038] (7) Discharge: When the air pressure inside the container drops to the lowest value, release the discharge piston. The discharge piston will retract instantly and draw the dish into the finished product output pump. Finally, the dish will be output from the finished product output pump to the container.

[0039] The roasting machine of the present invention also includes a cleaning stage, comprising the following steps: (8) Start the cleaning program: Start the axial flow fan and agitator assembly to 80% speed. The wind direction in the fourth wind tunnel section is from the second wind tunnel section to the first wind tunnel section, and the third wind tunnel section is the opposite. The rotation direction of the agitator assembly is the direction in which its blades face the wind direction. The unloading device module moves to the farthest end of the extension section through the pipeline, and the unloading piston extends to the farthest point of the piston slide rail. Start the heating cylinder to preheat until it reaches 90°. Open all the air intake electric control valves of the injection cylinder and push out all the pistons.

[0040] (9) Start cleaning: The liquid spray module containing water and food-grade detergent first sprays an appropriate amount of water and food-grade detergent. After sufficient circulation and stirring, the wastewater is collected in the same way as the finished product output pump and the collected dishes. However, the valve of the unloading device module is opened until the wastewater flows completely into the vacuum collection tank. Then the liquid spray module sprays clean water for rinsing, and the process is repeated several times until it is completely rinsed clean.

[0041] (10) Sewage discharge: Close the vacuum pump and the valve of the boiler discharge device module, and open all the electric control valves for exhausting the injection cylinder. At this time, the vacuum collection tank and the pressurized gas tank are connected to form positive pressure, and the water treatment circulation system in the facility is turned on to collect sewage.

[0042] (11) Air drying: Continue to turn on the fan, stirrer and the valve of the unloading device module until air drying. After the humidity sensor returns to the normal value (relative humidity <60%) and remains stable, enter the standby state.

[0043] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A stir-frying machine suitable for microgravity and confined space environments, characterized in that, The system includes an elliptical annular wind tunnel structure, a frustum-shaped centrifugal heating cylinder module, several solid food injection chamber modules, several liquid injection modules, a discharging device module, a vacuum pressure regulating module, and a control computer that controls the entire process. The two bent pipes at the ends of the elliptical annular wind tunnel structure are the first and second wind tunnel sections, respectively, and the straight pipes on both sides are the third and fourth wind tunnel sections, respectively. The solid food injection chamber module is located on the surface of the third wind tunnel section. An axial flow fan is installed on the third wind tunnel section near the first wind tunnel section. The frustum-shaped centrifugal heating cylinder module is axially connected between the fourth wind tunnel sections. Several liquid injection modules are located on the surface of the frustum-shaped centrifugal heating cylinder module. The second wind tunnel section has an extension section in the tangential direction near the fourth wind tunnel section, into which the discharging device module is inserted and installed. The vacuum pressure regulating module is connected to the solid food injection chamber module and the discharging device module, respectively.

2. The roasting machine according to claim 1, suitable for microgravity and enclosed space environments, is characterized in that, The solid food injection chamber module includes an injection cylinder and an injection piston. The bottom opening of the injection cylinder is connected to the third wind tunnel section. The injection piston is slidably disposed in the injection cylinder. The injection piston has a barbell structure, including a connecting rod and a first piston plate and a second piston plate disposed at both ends of the connecting rod. The closed section of the injection cylinder is equipped with a pressure sensor and a distance sensor for measuring the pressure inside the injection cylinder and the position of the piston.

3. The roasting machine according to claim 1, suitable for microgravity and enclosed space environments, is characterized in that, The frustum-shaped centrifugal heating cylinder module includes a heating cylinder body, a stirrer assembly, and a flow guide. The heating cylinder body has a frustum-shaped structure, including a converging end and an open end. The converging end is connected to the first wind tunnel section, and the open end is connected to the flow guide. The stirrer assembly is installed inside the heating cylinder body, and an electric heater and a temperature sensor are installed on the inner wall of the heating cylinder body.

4. A stir-frying machine suitable for microgravity and enclosed space environments according to claim 3, characterized in that, The agitator assembly includes a ring motor, a mesh, and blades. The blades are arranged along the inner side of the heating cylinder, tapering from a converging end to a widening end, and are fixed to the mesh at the bottom. The cross-section of the blades fits the heating cylinder. The diameter of the mesh is the same as the inner diameter of the motor rotor. The flow guide is a Laval nozzle-shaped hourglass structure. The air inlet of the flow guide is connected to the second wind tunnel section, and the exhaust port is connected to the heating cylinder. The liquid injection module is mounted on the flow guide.

5. A roasting machine suitable for microgravity and enclosed space environments according to claim 1, characterized in that, The liquid injection module includes a liquid storage tank, an injection pump, a filter, a pressure regulator, and a nozzle. The injection pump and pressure regulator are mounted on the liquid storage tank. The filter is installed inside the liquid storage tank. The nozzle is installed at the end of the liquid storage tank and is mounted towards the heating cylinder through an opening in the outer wall of the flow guide.

6. A stir-frying machine suitable for microgravity and confined space environments according to claim 1, characterized in that, The unloading device module includes a pipe, a finished product output pump, and an electrically controlled valve. The pipe is inserted into the tangential extension section of the second wind tunnel section. The inlet of the finished product output pump is connected to the pipe. A first linear motor is installed inside the outer wall of the pipe to control the insertion depth of the unloading device module into the extension section. The rotor of the finished product output pump is driven by the output pump motor through a magnetic coupler. The electrically controlled valve is installed at the air extraction port of the finished product output pump. The outlet of the finished product output pump is connected to a vacuum packaging machine.

7. A roasting machine suitable for microgravity and enclosed space environments according to claim 6, characterized in that, It also includes a discharge piston and a piston slide rail. The piston slide rail is set on the inner wall of the finished product output pump. The discharge piston is slidably set on the piston slide rail. The contact surface between the discharge piston and the piston slide rail is a magnet. The piston slide rail has a built-in second linear motor coil for controlling the piston position. The top of the discharge piston is set in a conical shape. When the discharge piston is in the outermost position, it acts as a guide cone to guide part of the airflow to the central axis.

8. A stir-frying machine suitable for microgravity and enclosed space environments according to claim 1, characterized in that, The vacuum pressure regulating module includes a vacuum pump, a vacuum collection tank, and a pressurized gas tank. The vacuum pump has an inlet and an outlet, which are connected to the vacuum collection tank and the pressurized gas tank, respectively, to maintain the pressurized and vacuum states of the two.

9. A roasting machine suitable for microgravity and enclosed space environments according to claim 8, characterized in that, The vacuum collection tank is equipped with two inlets and two outlets. The two outlets are connected to the vacuum pump and the water treatment circulation system in the facility, respectively. The two inlets are connected to the exhaust control valve of the solid food injection chamber module and the exhaust control valve of the unloading device module, respectively. The vacuum collection tank has built-in pressure and capacity sensors to provide data input to the control computer.

10. A roasting machine suitable for microgravity and enclosed space environments according to claim 8, characterized in that, The inlet of the pressurized gas tank is connected to the outlet of the vacuum pump, and the outlet of the pressurized gas tank is connected to the air intake electric control valve of the solid food injection chamber module.

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