A transfer capsule environment creation system and control method

Abstract

The application provides a transfer cabin environment creating system and a control method. The environment creating system comprises a fresh air unit connected with a supply air outlet of the transfer cabin, an exhaust air unit connected with an exhaust air outlet of the transfer cabin, an outside cabin pressure sensor arranged outside the transfer cabin, and an inside cabin pressure difference sensor for monitoring the pressure difference between the inside and outside of the transfer cabin. The signal output ends of the outside cabin pressure sensor and the inside cabin pressure difference sensor are connected with the input end of a controller respectively, and the output end of the controller is connected with the regulating ends of the supply air fan and the exhaust air fan. The outside cabin pressure sensor is arranged to monitor the environmental pressure outside the transfer cabin. The controller identifies the specific mode of the transfer cabin, i.e. the landing mode, the ascending mode, the cruising mode or the ground mode, according to the change of the outside pressure P of the transfer cabin with time t monitored by the outside cabin pressure sensor. Then, the rotating speed of the supply air fan or the exhaust air fan is adjusted according to the different operation modes of the transfer cabin, so as to ensure the pressure regulation requirement in the transfer cabin.

Description

Technical Field

[0001] This invention belongs to the field of mobile cabin environment creation technology, specifically relating to a transfer cabin environment creation system and control method. Background Technology

[0002] The pressure environment of a mobile isolation unit (MOU) is primarily achieved through the difference in air supply and exhaust volumes, with the adjustment of this difference based on feedback from differential pressure sensors. However, for isolation units used for full-range transfer (referred to as transfer units), their application scenarios are not singular or fixed; there are also scenarios involving fluctuations in external atmospheric pressure, such as when using an aircraft to transfer the isolation unit. During aircraft transfer, the isolation unit is placed inside the aircraft cabin. During takeoff and descent, the pressure changes within the cabin are significant, typically reaching 20-30 Pa / s. Using conventional pressure environment creation systems and control methods alone can lead to pressure runaway within the transfer unit, resulting in insufficient biosafety assurance.

[0003] CN202110294715.2 discloses an adjustable positive and negative pressure isolation transfer cabin, which is equipped with a positive and negative pressure system inside the cabin. The positive and negative pressure system includes an exhaust device, an air intake device, and an air inlet. By controlling the opening and closing of the exhaust device and the air intake device, and by controlling the opening degree of the air inlet, the positive and negative pressure systems are switched to maintain the positive and negative pressure states of the cabin. However, the pressure changes in the cabin of different aircraft models are different. The aforementioned positive and negative pressure system cannot accurately identify the operating environment of each aircraft model, which may result in the pressure in the transfer cabin being higher (during ascent) or lower (descent) than the cabin pressure, thus failing to guarantee the negative (or positive) pressure regulation requirements in the transfer cabin. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art. The first objective of the present invention is to provide a control method for a transfer cabin environment creation system, and the second objective of the present invention is to provide a transfer cabin environment creation system.

[0005] To achieve the first objective mentioned above, the present invention adopts the following technical solution: a control method for a transfer chamber environment creation system, the environment creation system including a fresh air unit with a supply fan connected to the air supply outlet of the transfer chamber, an exhaust fan unit with an exhaust fan connected to the air exhaust outlet of the transfer chamber, an external pressure sensor located outside the transfer chamber, and an internal pressure differential sensor for monitoring the pressure difference between the inside and outside of the transfer chamber, the signal output terminals of the external pressure sensor and the internal pressure differential sensor being connected to the input terminal of the controller, and the output terminal of the controller being connected to the control terminals of the supply fan and the exhaust fan;

[0006] The control method includes a transfer cabin pressure control method, which specifically includes the following steps: The controller identifies four operating modes of the transfer cabin based on the change of external pressure P of the transfer cabin with time t monitored by the external pressure sensor and the parameter A=dP / dt: landing mode during the aircraft landing phase, ascent mode during the aircraft ascent phase, cruise mode during the aircraft cruise phase, and ground mode when the transfer cabin is on the ground.

[0007] The controller has a pre-stored set value of pressure difference between the inside and outside of the transfer compartment, △Pj. The controller acquires the monitored value of pressure difference between the inside and outside of the transfer compartment, △P, from the pressure difference sensor inside the compartment in real time.

[0008] When the pressure difference setpoint ΔPj > 0 inside and outside the transfer cabin, the supply fan is turned on first, followed by the exhaust fan. The shutdown sequence is reversed. During operation, the exhaust fan speed remains stable. The controller compares the monitored pressure difference value ΔP inside and outside the transfer cabin with the relative setpoint ΔP0 to adjust the supply fan speed. Specifically, if ΔP0 - C < ΔP < ΔP0 + C, the supply fan speed remains constant, where C is the allowable deviation between the actual pressure difference inside and outside the transfer cabin and the setpoint. If ΔP > ΔP0 + C, the supply fan speed is decreased; if ΔP < ΔP0 - C, the supply fan speed is increased. Wherein, when the transfer cabin is in landing mode, ΔP0 ≥ ΔPj + |A1| × 1 second, where A1 represents the constant setpoint for the depressurization rate inside the aircraft cabin. When the transfer cabin is in ascent mode or ground mode, ΔP0 is ΔPj. When the transfer cabin is in cruise mode, ΔP0 ≥ ΔPj + 0.5|A0| × 1 second. A0 represents the constant setting value of the pressurization rate inside the aircraft cabin;

[0009] When the pressure difference setpoint △Pj < 0 inside and outside the transfer compartment, the exhaust fan is turned on first, followed by the supply fan. The shutdown sequence is the reverse. During operation, the supply fan speed remains stable. The controller compares the monitored pressure difference value △P inside and outside the transfer compartment with the relative setpoint △P0 to adjust the exhaust fan speed. Specifically, if △P0-C < △P < △P0+C, the exhaust fan speed remains constant; if △P > △P0+C, the exhaust fan speed is increased; if △P < △P0-C, the exhaust fan speed is decreased. When the transfer compartment is in landing mode or ground mode, △P0 is △Pj; when the transfer compartment is in ascending mode, △P0 ≤ △Pj - |A1| × 1 second; when the transfer compartment is in cruise mode, △P0 ≤ △Pj - 0.5|A0| × 1 second.

[0010] The above technical solution monitors the ambient pressure outside the transport cabin by setting an external pressure sensor (when the transport cabin is transported by an aircraft, the external pressure sensor monitors the pressure inside the aircraft cabin). The controller identifies whether the transport cabin is in landing mode, ascent mode, cruise mode or ground mode based on the change of the external pressure P monitored by the external pressure sensor over time t. Then, according to the different operating modes of the transport cabin, the controller adjusts the speed of the blower or exhaust fan accordingly to ensure the pressure (including negative pressure and positive pressure) control requirements inside the transport cabin.

[0011] In a preferred embodiment of the present invention, an external pressure sensor is provided on the upper, left, right, front and rear sides of the transfer compartment. The controller acquires the signals of all external pressure sensors in real time and calculates the external pressure P of the transfer compartment based on the average value of the effective data of all external pressure sensors.

[0012] The above technical solution uses multiple external pressure sensors and takes the average value of all external pressure sensors as the transfer chamber external pressure P, making the results more accurate.

[0013] In a preferred embodiment of the present invention, the specific method for the controller to identify the operating mode of the transfer cabin is as follows: when A > A0, the transfer cabin is identified as being in landing mode; when A < A1, the transfer cabin is identified as being in ascent mode; when A1 ≤ A ≤ A0, the transfer cabin is identified as being in cruise mode or ground mode.

[0014] The above technical solution introduces a constant setting value A0 for the pressurization rate inside the aircraft cabin and a constant setting value A1 for the depressurization rate inside the aircraft cabin. For different aircraft models, users can pre-set appropriate A0 and A1, and the controller can identify the operating mode of the transfer cabin based on the comparison between A and A0 and A1, making the operation simple and convenient.

[0015] In a preferred embodiment of the present invention, the fresh air unit further includes a heat exchanger with adjustable heating and cooling temperatures. An outside temperature sensor for monitoring the ambient temperature outside the transfer compartment is provided outside the transfer compartment. The signal output terminal of the outside temperature sensor is connected to the input terminal of the controller, and the output terminal of the controller is connected to the heating and cooling enable terminal of the heat exchanger. The control method also includes a method for adjusting the temperature inside the transfer compartment. Specifically, when the transfer compartment is in ground mode, the controller acquires the outside temperature Tw monitored by the outside temperature sensor in real time. When Tw > Tw1, the heat exchanger starts cooling; when Tw < Tw2, the heat exchanger starts heating; and when Tw2 ≤ Tw ≤ Tw1, the heat exchanger is turned off. Herein, Tw1 represents the set temperature value for the heat exchanger to start cooling, and Tw2 represents the set temperature value for the heat exchanger to start heating.

[0016] The above technical solution, by installing a heat exchanger in the fresh air unit, ensures the temperature environment throughout the transfer process when the aircraft cannot activate its own temperature regulation system or when the transfer cabin is in ground mode.

[0017] In a preferred embodiment of the present invention, an internal temperature sensor for monitoring the internal temperature of the transfer chamber is provided inside the transfer chamber. The signal output terminal of the internal temperature sensor is connected to the input terminal of the controller, and the output terminal of the controller is connected to the temperature control terminal of the heat exchanger. The internal temperature regulation method of the transfer chamber further includes the following steps: the controller pre-stores a setpoint T0 for the internal temperature of the transfer chamber; the controller acquires the monitored internal temperature T value of the transfer chamber from the internal temperature sensor in real time; and the controller compares the monitored internal temperature T value with the setpoint T0 to adjust the heating and cooling capacity of the heat exchanger. When the heat exchanger is heating: When T0-△T≤T≤T0+△T, keep the electric heating level of the heat exchanger unchanged, where △T is the allowable deviation between the actual temperature inside the transfer chamber and the set temperature inside the transfer chamber; when T>T0+△T, decrease the electric heating level of the heat exchanger; when T<T0-△T, increase the electric heating level of the heat exchanger. When the heat exchanger is cooling: When T0-△T≤T≤T0+△T, keep the cooling capacity of the heat exchanger unchanged; when T>T0+△T, increase the cooling capacity of the heat exchanger; when T<T0-△T, decrease the cooling capacity of the heat exchanger.

[0018] In another preferred embodiment of the present invention, the fresh air handling unit has a plurality of supply fans connected in parallel, and the exhaust air handling unit also has a plurality of exhaust fans connected in parallel.

[0019] In the above technical solution, multiple supply fans serve as backups for each other to improve the reliability of the fresh air handling unit; multiple exhaust fans also serve as backups for each other to improve the reliability of the exhaust handling unit.

[0020] In another preferred embodiment of the present invention, the fresh air handling unit further includes an intake air filter for multi-stage filtration of fresh air.

[0021] In another preferred embodiment of the present invention, the exhaust fan unit further includes an exhaust filter for filtering the exhaust gas and a disinfection device for disinfecting the exhaust gas.

[0022] To achieve the second objective mentioned above, the present invention adopts the following technical solution: a transfer chamber environment creation system, comprising a fresh air unit with a supply fan connected to the air outlet of the transfer chamber, an exhaust fan unit with an exhaust fan connected to the air outlet of the transfer chamber, multiple external pressure sensors located outside the transfer chamber, and an internal pressure differential sensor for monitoring the pressure difference between the inside and outside of the transfer chamber. The signal output terminals of the external pressure sensors and the internal pressure differential sensor are respectively connected to the input terminal of a controller, and the output terminal of the controller is connected to the control terminals of the supply fan and the exhaust fan. The controller uses the control method provided in this application to control the pressure of the transfer chamber.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of the transfer cabin environment creation system according to an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the structure of the fresh air handling unit according to an embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the structure of the exhaust fan unit according to an embodiment of this application.

[0028] The reference numerals in the accompanying drawings include: transfer compartment 10, fresh air unit 20, air supply fan 21, air inlet filter 22, pre-filter 221, medium-efficiency filter 222, high-efficiency filter 223, heat exchanger 23, exhaust fan unit 30, exhaust fan 31, exhaust filter 32, disinfection device 33, one-way valve 34, external pressure sensor 41, internal differential pressure sensor 42, external temperature sensor 43, and internal temperature sensor 44. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0032] This invention provides a transfer cabin environment creation system and its control method, such as... Figures 1-3 As shown, in a preferred embodiment of the present invention, the transfer chamber environment creation system includes a fresh air unit 20 with a blower 21 connected to the air supply outlet of the transfer chamber 10, an exhaust fan unit 30 with an exhaust fan 31 connected to the air exhaust outlet of the transfer chamber 10, an external pressure sensor 41 located outside the transfer chamber 10, and an internal pressure differential sensor 42 for monitoring the pressure difference between the inside and outside of the transfer chamber 10. The signal output terminals of the external pressure sensor 41 and the internal pressure differential sensor 42 are respectively connected to the input terminal of the controller, and the output terminal of the controller is connected to the control terminals of the blower 21 and the exhaust fan 31.

[0033] The transfer cabin environment creation system of the present invention can control the pressure of the transfer cabin 10 using the following pressure control method, which includes the following steps: The controller identifies four operating modes of the transfer cabin 10 based on the change of the external pressure P of the transfer cabin with time t, monitored by the external pressure sensor 41, and according to the parameter A=dP / dt: landing mode during aircraft descent, ascent mode during aircraft ascent, cruise mode during aircraft cruise, and ground mode when the transfer cabin 10 is on the ground. Preferably, one external pressure sensor 41 is installed on each of the upper, left, right, front, and rear sides of the transfer cabin 10. The external pressure sensors 41 are bolted to the outer wall of the transfer cabin 10. The controller acquires the signals from all external pressure sensors 41 in real time, and calculates the external pressure P of the transfer cabin based on the average value of the effective data from all external pressure sensors 41.

[0034] The controller has a pre-stored pressure difference setting value △Pj inside and outside the transfer chamber. This △Pj is set by the user according to the actual pressure difference required by the transfer chamber 10. The controller obtains the pressure difference monitoring value △P inside and outside the transfer chamber monitored by the pressure difference sensor 42 in real time.

[0035] When the user-set pressure difference setting value △Pj > 0, the supply fan 21 is turned on first, followed by the exhaust fan 31. The shutdown sequence is reversed. During operation, the exhaust fan 31 maintains a stable speed. The controller compares the monitored pressure difference value △P inside and outside the transfer chamber with the relative set value △P0 to adjust the speed of the supply fan 21. Specifically, if △P0-C < △P < △P0+C, the speed of the supply fan 21 remains constant. C is the allowable deviation between the actual pressure difference inside and outside the transfer chamber and the set value of the pressure difference inside and outside the transfer chamber, which can be set by the user according to actual needs. The default value of C in this environmental creation system is 2Pa. If △P > △P0+C, the speed of the supply fan 21 is decreased; if △P < △P0-C, the speed of the supply fan 21 is increased.

[0036] Specifically, when the transfer cabin 10 is in landing mode, △P0 ≥ △Pj + |A1| × 1 second, where A1 represents the constant setting value of the depressurization rate inside the aircraft cabin, preferably A1 ≥ -33 Pa / s, and further preferably △P0 = △Pj + 60 Pa; when the transfer cabin 10 is in ascent mode or ground mode, △P0 is △Pj; when the transfer cabin 10 is in cruise mode, △P0 ≥ △Pj + 0.5|A0| × 1 second, where A0 represents the constant setting value of the pressurization rate inside the aircraft cabin, preferably A0 ≤ 24 Pa / s, and further preferably △P0 = △Pj + 30 Pa.

[0037] When the user-set pressure difference setting value △Pj < 0, the exhaust fan 31 is turned on first, followed by the supply fan 21. The shutdown sequence is the reverse. During operation, the speed of the supply fan 21 remains stable. The controller compares the monitored pressure difference value △P inside and outside the transfer chamber with the relative set value △P0 to adjust the speed of the exhaust fan 31. Specifically, if △P0-C < △P < △P0+C, the speed of the exhaust fan 31 remains constant; if △P > △P0+C, the speed of the exhaust fan 31 is increased; if △P < △P0-C, the speed of the exhaust fan 31 is decreased.

[0038] Specifically, when the transfer capsule 10 is in landing mode or ground mode, the value of △P0 is △Pj; when the transfer capsule 10 is in ascent mode, △P0 ≤ △Pj - |A1| × 1 second, and preferably △P0 = △Pj - 60 Pa; when the transfer capsule 10 is in cruise mode, △P0 ≤ △Pj - 0.5|A0| × 1 second, and preferably △P0 = △Pj - 30 Pa.

[0039] In this invention, the specific method for the controller to identify the operating mode of the transfer cabin 10 is as follows: when A > A0, the environmental pressure outside the transfer cabin 10 rises, the aircraft is landing, and the transfer cabin 10 is identified as being in landing mode; when A < A1, the environmental pressure outside the transfer cabin 10 drops, the aircraft is ascending, and the transfer cabin 10 is identified as being in ascending mode; when A1 ≤ A ≤ A0, the environmental pressure outside the transfer cabin 10 is stable, and the transfer cabin 10 is identified as being in cruise mode or ground mode.

[0040] Wherein, A0 represents the constant setting value of the pressurization rate in the aircraft cabin, preferably A0≤24Pa / s. Users can change it according to different aircraft models. The default value of A0 in this environmental creation system is 10Pa / s. A1 represents the constant setting value of the depressurization rate in the aircraft cabin, preferably A1≥-33Pa / s. Users can change it according to different aircraft models. The default value of A1 in this environmental creation system is -10Pa / s.

[0041] like Figure 1 and Figure 2 As shown, in another preferred embodiment of the present invention, the fresh air unit 20 also has a heat exchanger 23 with adjustable hot and cold temperatures. The heat exchanger 23 is located upstream of the blower 21. An external temperature sensor 43 for monitoring the ambient temperature outside the transfer chamber 10 is provided outside the transfer chamber 10. The external temperature sensor 43 is also bolted to the outer wall of the transfer chamber 10. The signal output terminal of the external temperature sensor 43 is connected to the input terminal of the controller, and the output terminal of the controller is connected to the hot and cold enable terminal of the heat exchanger 23.

[0042] When the transfer cabin 10 is in landing, ascent, or cruise mode, the aircraft's own air conditioning system operates to ensure the required temperature inside the cabin. When the aircraft cannot activate its own temperature control system or when the transfer cabin 10 is in ground mode, the transfer cabin environment system can also regulate the temperature inside the transfer cabin 10 according to the following control method: Specifically, the controller acquires the external temperature Tw monitored by the external temperature sensor 43 in real time. When Tw > Tw1, the heat exchanger 23 starts cooling; when Tw < Tw2, the heat exchanger 23 starts heating; and when Tw2 ≤ Tw ≤ Tw1, the heat exchanger 23 shuts down. Here, Tw1 represents the set temperature value for the heat exchanger to start cooling, for example, 26℃; and Tw2 represents the set temperature value for the heat exchanger to start heating, for example, 16℃.

[0043] like Figure 1 and Figure 2 As shown, more preferably, the transfer chamber 10 is provided with an internal temperature sensor 44 for monitoring the internal temperature of the transfer chamber 10. The signal output terminal of the internal temperature sensor 44 is connected to the input terminal of the controller, and the output terminal of the controller is connected to the temperature control terminal of the heat exchanger 23.

[0044] The transfer chamber environment creation system can also adjust the temperature inside the transfer chamber 10 according to the following control method. Specifically, the controller has a pre-stored temperature setpoint T0 inside the transfer chamber 10. T0 is set by the user according to the actual temperature required by the transfer chamber 10. The controller obtains the temperature monitoring value T inside the transfer chamber 10 monitored by the temperature sensor 44 in real time. The controller compares the temperature monitoring value T inside the transfer chamber 10 with the temperature setpoint T0 inside the transfer chamber 10 to adjust the heating and cooling capacity of the heat exchanger 23.

[0045] When the heat exchanger 23 is heating: when T0-△T≤T≤T0+△T, the electric heating level of the heat exchanger 23 remains unchanged, where △T is the allowable deviation between the actual temperature inside the transfer chamber and the set temperature inside the transfer chamber. The default value of △T in this environmental creation system is 3℃; when T>T0+△T, the electric heating level of the heat exchanger 23 is reduced; when T<T0-△T, the electric heating level of the heat exchanger 23 is increased.

[0046] Under the cooling condition of heat exchanger 23: when T0-△T≤T≤T0+△T, the cooling capacity of heat exchanger 23 remains unchanged; when T>T0+△T, the cooling capacity of heat exchanger 23 is increased; when T<T0-△T, the cooling capacity of heat exchanger 23 is decreased.

[0047] It should be noted that the aforementioned temperature control method for the transfer cabin is mainly used when the temperature environment in the aircraft cabin is out of control or in ground mode, to ensure the temperature environment of the transfer cabin 10 throughout the transfer process.

[0048] like Figure 1 As shown, in another preferred embodiment of the present invention, the fresh air unit 20 has multiple air supply fans 21 connected in parallel. The multiple air supply fans 21 serve as backups for each other, thereby improving the reliability of the fresh air unit 20. Under normal circumstances, the multiple air supply fans 21 operate at the same speed. If any air supply fan 21 fails, the other air supply fans 21 can quickly switch to a higher speed to ensure the fresh air demand in the transfer chamber 10.

[0049] like Figure 1 As shown, in another preferred embodiment of the present invention, the exhaust fan unit 30 also has multiple exhaust fans 31 connected in parallel. The multiple exhaust fans 31 serve as backups for each other, improving the reliability of the exhaust fan unit 30. Under normal circumstances, the multiple exhaust fans 31 operate at the same speed. If any exhaust fan 31 fails, the other exhaust fans 31 can quickly switch to the high-speed operation state to ensure the exhaust demand in the transfer chamber 10.

[0050] like Figure 2As shown, the fresh air handling unit 20 also includes an intake air filter 22 for multi-stage filtration of fresh air. The intake air filter 22 includes a pre-filter 221, a medium-efficiency filter 222 and a high-efficiency filter 223 arranged sequentially along the air inlet of the fresh air handling unit 20, so as to achieve a three-stage filtration efficiency for fresh air.

[0051] like Figure 3 As shown, the exhaust fan unit 30 also includes an exhaust filter 32 for filtering the exhaust gas and a disinfection device 33 for disinfecting the exhaust gas. The exhaust filter 32 is located at the air inlet of the exhaust fan unit 30, and the disinfection device 33 is located upstream of the exhaust fan 31. A one-way valve 34 is also provided downstream of the exhaust fan 31 to prevent outside air from entering the exhaust fan unit 30. The disinfection device 33 uses micro-electrostatic plasma disinfection, which can ensure the biosafety of the exhaust air in the transfer chamber 10 and effectively avoid infection caused by the leakage of contaminated air in the transfer chamber 10.

[0052] In the description of this specification, references to terms such as "preferred embodiment," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A control method for a transfer cabin environment creation system, characterized in that, The environmental creation system includes a fresh air unit with a blower connected to the air supply outlet of the transfer compartment, an exhaust air unit with an exhaust fan connected to the air exhaust outlet of the transfer compartment, an external pressure sensor located outside the transfer compartment, and an internal pressure differential sensor for monitoring the pressure difference between the inside and outside of the transfer compartment. The signal output terminals of the external pressure sensor and the internal pressure differential sensor are respectively connected to the input terminal of the controller, and the output terminal of the controller is connected to the control terminal of the blower and the exhaust fan. The control method includes a transfer cabin pressure control method, which specifically includes the following steps: The controller identifies four operating modes of the transfer cabin based on the change of external pressure P of the transfer cabin with time t monitored by the external pressure sensor and the parameter A=dP / dt: landing mode during the aircraft landing phase, ascent mode during the aircraft ascent phase, cruise mode during the aircraft cruise phase, and ground mode when the transfer cabin is on the ground. The controller has a pre-stored set value of pressure difference between the inside and outside of the transfer compartment, △Pj. The controller acquires the monitored value of pressure difference between the inside and outside of the transfer compartment, △P, from the pressure difference sensor inside the compartment in real time. When the pressure difference setpoint ΔPj > 0 inside and outside the transfer chamber, the supply fan is turned on first, followed by the exhaust fan. The shutdown sequence is the reverse. During operation, the exhaust fan speed remains stable. The controller compares the monitored pressure difference ΔP inside and outside the transfer chamber with the relative setpoint ΔP0 to adjust the supply fan speed. Specifically, if ΔP0 - C < ΔP < ΔP0 + C, the supply fan speed remains constant, where C is the allowable deviation between the actual pressure difference inside and outside the transfer chamber and the setpoint. If ΔP > ΔP0 + C, the supply fan speed is decreased. If ΔP < ΔP0 - C, the supply fan speed is increased. Specifically, when the transfer cabin is in landing mode, △P0 ≥ △Pj + |A1| × 1 second, where A1 represents the constant setting value of the depressurization rate inside the aircraft cabin; when the transfer cabin is in ascent mode or ground mode, △P0 is △Pj; and when the transfer cabin is in cruise mode, △P0 ≥ △Pj + 0.5|A0| × 1 second, where A0 represents the constant setting value of the pressurization rate inside the aircraft cabin. When the pressure difference set value △Pj inside and outside the transfer chamber is less than 0, the exhaust fan is turned on first, followed by the supply fan. The shutdown sequence is the reverse. During operation, the speed of the supply fan remains stable. The controller compares the monitored pressure difference value △P inside and outside the transfer chamber with the relative set value △P0 to adjust the speed of the exhaust fan. Specifically, if △P0-C < △P < △P0+C, the exhaust fan speed is kept constant; if △P > △P0+C, the exhaust fan speed is increased; if △P < △P0-C, the exhaust fan speed is decreased. Specifically, when the transfer capsule is in landing mode or ground mode, the value of △P0 is △Pj; when the transfer capsule is in ascent mode, △P0 ≤ △Pj - |A1| × 1 second; and when the transfer capsule is in cruise mode, △P0 ≤ △Pj - 0.5|A0| × 1 second.

2. The control method for a transfer cabin environment creation system as described in claim 1, characterized in that, An external pressure sensor is installed on the upper, left, right, front, and rear sides of the transfer compartment. The controller acquires the signals from all external pressure sensors in real time and calculates the external pressure P of the transfer compartment based on the average value of the valid data from all external pressure sensors.

3. The control method for a transfer cabin environment creation system as described in claim 1, characterized in that, The specific method for the controller to identify the operating mode of the transfer cabin is as follows: when A > A0, it is identified as the transfer cabin is in landing mode; when A < A1, it is identified as the transfer cabin is in ascent mode; when A1 ≤ A ≤ A0, it is identified as the transfer cabin is in cruise mode or ground mode.

4. The control method for a transfer cabin environment creation system as described in claim 1, characterized in that, The fresh air unit also has a heat exchanger with adjustable hot and cold temperatures. An outside temperature sensor for monitoring the ambient temperature outside the transfer compartment is provided outside the transfer compartment. The signal output terminal of the outside temperature sensor is connected to the input terminal of the controller, and the output terminal of the controller is connected to the hot and cold enable terminal of the heat exchanger. The control method also includes a method for regulating the temperature inside the transfer compartment, specifically: The heat exchanger is off in landing mode, ascent mode, and cruise mode; When the transfer cabin is in ground mode, the controller acquires the external temperature Tw monitored by the external temperature sensor in real time. When Tw > Tw1, the heat exchanger turns on for cooling; when Tw < Tw2, the heat exchanger turns on for heating; and when Tw2 ≤ Tw ≤ Tw1, the heat exchanger turns off. Where Tw1 represents the set temperature value for the heat exchanger to start cooling, and Tw2 represents the set temperature value for the heat exchanger to start heating.

5. The control method for a transfer cabin environment creation system as described in claim 4, characterized in that, The transfer chamber is equipped with an internal temperature sensor for monitoring the internal temperature. The signal output terminal of the internal temperature sensor is connected to the input terminal of the controller, and the output terminal of the controller is connected to the temperature control terminal of the heat exchanger. The method for regulating the temperature inside the transfer chamber further includes the following steps: the controller has a pre-stored temperature setpoint T0 inside the transfer chamber; the controller acquires the temperature monitoring value T inside the transfer chamber monitored by the temperature sensor in real time; and the controller compares the temperature monitoring value T inside the transfer chamber with the temperature setpoint T0 inside the transfer chamber to adjust the heat exchanger's cooling and heating capacity. When the heat exchanger is heating: when T0-△T≤T≤T0+△T, the electric heating level of the heat exchanger remains unchanged, where △T is the allowable deviation between the actual temperature inside the transfer chamber and the set temperature inside the transfer chamber; when T>T0+△T, the electric heating level of the heat exchanger is reduced; when T<T0-△T, the electric heating level of the heat exchanger is increased. Under the condition of heat exchanger refrigeration: when T0-△T≤T≤T0+△T, keep the refrigeration capacity of the heat exchanger unchanged; when T>T0+△T, increase the refrigeration capacity of the heat exchanger; when T<T0-△T, decrease the refrigeration capacity of the heat exchanger.

6. A control method for a transfer cabin environment creation system as described in any one of claims 1-5, characterized in that, The fresh air handling unit has multiple supply fans connected in parallel, and the exhaust fan unit also has multiple exhaust fans connected in parallel.

7. A control method for a transfer cabin environment creation system as described in any one of claims 1-5, characterized in that, The fresh air handling unit also includes an intake air filter that performs multi-stage filtration of fresh air.

8. A control method for a transfer cabin environment creation system as described in any one of claims 1-5, characterized in that, The exhaust fan unit also includes an exhaust filter for filtering the exhaust gas and a disinfection device for disinfecting the exhaust gas.

9. A transfer cabin environment creation system, characterized in that, The system includes a fresh air unit with a supply fan connected to the air outlet of the transfer compartment, an exhaust fan unit with an exhaust fan connected to the air outlet of the transfer compartment, multiple external pressure sensors located outside the transfer compartment, and an internal pressure differential sensor for monitoring the pressure difference between the inside and outside of the transfer compartment. The signal output terminals of the external pressure sensors and the internal pressure differential sensor are respectively connected to the input terminal of a controller. The output terminal of the controller is connected to the control terminals of the supply fan and the exhaust fan. The controller controls the pressure of the transfer compartment according to the control method according to any one of claims 1-8.

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