A soft isolator

Abstract

The utility model provides a kind of soft isolator, including isolator body, air inlet pipeline and exhaust pipeline, the air inlet pipeline includes compressed air control valve, fresh air control valve, fresh air fan and air supply control valve, the compressed air control valve and the fresh air control valve are connected with the import of the fresh air fan respectively, the air supply control valve is connected the outlet of the fresh air fan and the isolator body;The import of the exhaust pipeline is connected with the isolator body, the outlet of the exhaust pipeline is provided with temperature and humidity sensor, the opening and closing degree of the compressed air control valve and the fresh air control valve is adjusted, to control the volume ratio of dry compressed air and indoor fresh air, and then adjust the humidity of mixed gas.

Description

Technical Field

[0001] This utility model relates to the field of isolator technology, and in particular to a flexible isolator. Background Technology

[0002] Flexible isolators, as portable biosafety devices based on negative pressure technology, play a crucial role in pathogen isolation and operational protection in high-risk environments. Their core principle is to create a continuous negative pressure environment within the chamber using a fan system, typically ranging from -10 Pa to -100 Pa. This ensures unidirectional airflow into the chamber, effectively preventing the leakage of internal contaminants. In terms of materials, flexible materials such as transparent PVC film are used. This design gives the chamber both excellent airtightness and good flexibility, making it widely applicable to various scenarios such as temporary isolation, on-site testing, and medical transport.

[0003] Referring to the patent document CN204579435U, a sterile isolator for laboratory animals is disclosed. The isolator includes an isolator body, and an air inlet pipe and an air outlet pipe disposed on both sides of the isolator body. The isolator body adopts a structure of PVC transparent soft chamber and stainless steel outer frame.

[0004] Existing equipment typically relies on natural indoor air or fixed ductwork for air intake, lacking an effective humidity control mechanism. This results in the inability to flexibly adjust the humidity inside the isolator according to the specific needs of special experimental or medical environments during actual use. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a flexible isolator capable of regulating humidity within the isolator.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A flexible isolator, comprising: isolator body; An air inlet duct includes a compressed air control valve, a fresh air control valve, a fresh air fan, and a supply air control valve. The compressed air control valve and the fresh air control valve are respectively connected to the inlet of the fresh air fan, and the supply air control valve is connected to the outlet of the fresh air fan and the isolator body. An exhaust duct is provided, the inlet of which is connected to the isolator body, and a temperature and humidity sensor is provided at the outlet of the exhaust duct.

[0007] In a preferred embodiment, the air inlet duct further includes: A flow controller is connected between the compressed air control valve and the fresh air fan.

[0008] In a preferred embodiment, the exhaust duct includes: An exhaust control valve is connected between the isolator body and the exhaust fan; An exhaust fan, wherein the temperature and humidity sensor is installed at the outlet of the exhaust fan.

[0009] In a preferred embodiment, the isolator body is provided with an inlet filter and an outlet filter, the inlet filter being connected to the inlet duct and the outlet filter being connected to the exhaust duct.

[0010] In a preferred embodiment, the isolator body is provided with an intermediate filter to divide the interior of the isolator body into an operating chamber and a transfer chamber. The operating chamber is located between the inlet filter and the intermediate filter, and the transfer chamber is located between the intermediate filter and the outlet filter.

[0011] In a preferred embodiment, a first differential pressure sensor is provided in the operating chamber, and a second differential pressure sensor is provided in the transmission chamber.

[0012] Compared with existing technologies, this technical solution has the following advantages: A temperature and humidity sensor located at the outlet of the exhaust duct detects the humidity of the exhaust gas in real time. If the humidity does not meet the preset value, the control system adjusts the opening degree of the compressed air control valve and the fresh air control valve to control the volume ratio of dry compressed air to indoor fresh air, thereby adjusting the humidity of the mixed gas. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the soft isolator described in this utility model.

[0014] In the diagram: 100 Isolator body, 101 Inlet air filter, 102 Outlet air filter, 103 Intermediate filter, 110 Operating chamber, 120 Transfer chamber, 200 Inlet air duct, 201 Compressed air control valve, 202 Flow controller, 203 Fresh air control valve, 204 Fresh air fan, 205 Supply air control valve, 300 Exhaust air duct, 301 Exhaust air control valve, 302 Exhaust air fan, 401 Temperature and humidity sensor, 402 First differential pressure sensor, 403 Second differential pressure sensor. Detailed Implementation

[0015] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0016] Please refer to Figure 1 This utility model provides a flexible isolator that integrates humidity control functionality in its structural design, effectively solving the technical problem that existing isolators cannot perform humidity control. The flexible isolator includes: Isolator body 100; An air inlet duct 200 includes a compressed air control valve 201, a fresh air control valve 203, a fresh air fan 204, and an air supply control valve 205. The compressed air control valve 201 and the fresh air control valve 203 are respectively connected to the inlet of the fresh air fan 204, and the air supply control valve 205 is connected to the outlet of the fresh air fan 204 and the isolator body 100. An exhaust duct 300 is provided, the inlet of which is connected to the isolator body 100, and a temperature and humidity sensor 401 is provided at the outlet of the exhaust duct 300.

[0017] In this embodiment, when the flexible isolator is in operation, the fresh air fan 204 starts, mixing dry compressed air (the intake amount is controlled by the compressed air control valve 201) with indoor fresh air (the intake amount is controlled by the fresh air control valve 203). The mixed gas enters the isolator body 100 through the air supply control valve 205. The gas inside the isolator body 100 is discharged through the exhaust duct 300. The temperature and humidity sensor 401 located at the outlet of the exhaust duct 300 detects the humidity of the discharged gas in real time. If the humidity does not meet the preset value, the control system adjusts the opening degree of the compressed air control valve 201 and the fresh air control valve 203 to adjust the humidity of the mixed gas. This humidity regulation mechanism is based on direct feedback regulation of the hardware structure, that is, humidity control is achieved through the coordinated work of the temperature and humidity sensor 401, the compressed air control valve 201, and the fresh air control valve 203.

[0018] like Figure 1 As shown, the air inlet duct 200 includes a compressed air control valve 201, a fresh air control valve 203, a fresh air fan 204, and an air supply control valve 205.

[0019] The compressed air control valve 201 controls the intake of dry compressed air. The fresh air control valve 203 controls the intake of fresh air into the room. The fresh air fan 204 is the power source for the air intake duct 200, and it can mix the dry compressed air with the fresh air into the room. The supply air control valve 205 connects the outlet of the fresh air fan 204 to the isolator body 100. By adjusting the opening degree of the supply air control valve 205, the flow rate of the mixed gas entering the isolator body 100 can be controlled.

[0020] refer to Figure 1 The air inlet duct 200 further includes: A flow controller 202 is connected between the compressed air control valve 201 and the fresh air fan 204.

[0021] The function of the flow controller 202 is to control the flow rate of the dry compressed air entering the fresh air fan 204, thereby providing a basis for subsequent humidity adjustment.

[0022] In actual operation, the volume ratio of dry compressed air to indoor fresh air is controlled by adjusting the opening degree of the compressed air control valve 201 and the fresh air control valve 203 according to the required humidity range. For example, when it is necessary to reduce the humidity of the mixed gas entering the isolator body 100, the opening degree of the compressed air control valve 201 is increased while the opening degree of the fresh air control valve 203 is decreased, allowing more dry compressed air to enter the fresh air fan 204 for mixing; conversely, when it is necessary to increase the humidity, the opposite operation is performed.

[0023] like Figure 1 As shown, the exhaust duct 300 includes: An exhaust control valve 301 is connected between the isolator body 100 and the exhaust fan 302. The exhaust fan 302 is equipped with the temperature and humidity sensor 401 at its outlet.

[0024] By adjusting the opening degree of the exhaust control valve 301, the exhaust volume inside the isolator body 100 can be controlled, thereby maintaining a suitable negative pressure environment inside the isolator body 100.

[0025] The exhaust fan 302 provides power for the exhaust process, and a temperature and humidity sensor 401 is installed at its outlet. The temperature and humidity sensor 401 detects the humidity and temperature of the exhaust gas in real time and feeds the detection data back to the control system. The control system determines whether the humidity range detected by the temperature and humidity sensor 401 is within a preset value. If it is not within the preset value, the control system adjusts the opening degree of the compressed air control valve 201 and the fresh air control valve 203 to control the volume ratio of dry compressed air to indoor fresh air, thereby controlling the humidity of the mixed gas at the air inlet, so that the humidity of the exhaust gas reaches the required humidity range, thus ensuring that the humidity of the gas inside the isolator body 100 meets the requirements.

[0026] like Figure 1 As shown, the isolator body 100 is made of a flexible material, such as a transparent PVC film. This material combines airtightness and flexibility, making it easy to use in various scenarios such as temporary isolation, on-site testing, and medical transport.

[0027] The isolator body 100 is equipped with an inlet filter 101 and an outlet filter 102. The inlet filter 101 is connected to the inlet duct 200, and the outlet filter 102 is connected to the exhaust duct 300. The inlet filter 101 and the outlet filter 102 can effectively filter the air entering and exiting the isolator body 100, preventing external pollutants from entering and internal pollutants from leaking out.

[0028] refer to Figure 1 The inlet filter 101 is located on the right side of the isolator body 100, and the outlet filter 102 is located on the left side of the isolator body 100. That is, gas is introduced from the right side of the isolator body 100 and discharged from the left side.

[0029] like Figure 1 As shown, the isolator body 100 is equipped with an intermediate filter 103 to divide the interior of the isolator body 100 into an operating chamber 110 and a transfer chamber 120. The operating chamber 110 is located between the inlet filter 101 and the intermediate filter 103 and is the main area for related operations. The transfer chamber 120 is located between the intermediate filter 103 and the outlet filter 102 and is mainly used for the transfer of items. The intermediate filter 103 further improves the isolation effect and reduces cross-contamination between different areas.

[0030] The inlet filter 101, outlet filter 102 and intermediate filter 103 can refer to the high-efficiency air filtration device for isolators disclosed in patent document CN103007639A.

[0031] like Figure 1As shown, a first differential pressure sensor 402 is provided in the operating chamber 110, and a second differential pressure sensor 403 is provided in the transmission chamber 120. In practical applications, the differential pressure magnitude of the operating chamber 110 and the differential pressure range of the transmission chamber 120 are preset according to different usage requirements and safety standards.

[0032] The pressure difference between the operating chamber 110 and the preset reference area is monitored by the first differential pressure sensor 402. The pressure difference between the transmission chamber 120 and the preset reference area is monitored by the second differential pressure sensor 403. These two sensors collect differential pressure data in real time and convert it into electrical signals, which are then transmitted to the control system. The control system processes and analyzes the received signals, confirms the actual differential pressure parameters, and compares them with the preset differential pressure values.

[0033] When the control system detects that the pressure difference in the operating chamber 110 is not at the set value, it activates a multi-level control mechanism to control the pressure difference. The specific control steps are as follows: First-level adjustment: Frequency control of the exhaust fan 302. By changing the operating frequency of the exhaust fan 302, the exhaust volume is directly adjusted, thereby quickly affecting the pressure difference within the isolator. For example, when the pressure difference in the operating chamber 110 is too high, the frequency of the exhaust fan 302 is increased to increase the exhaust volume and reduce the internal pressure; conversely, the frequency is decreased to reduce the exhaust volume and increase the internal pressure.

[0034] Secondary adjustment: The opening and closing of the exhaust control valve 301 is adjusted to assist in adjusting the internal pressure difference of the isolator body 100. Based on the primary adjustment, if the pressure difference still does not reach the set value, the exhaust volume is further precisely controlled by adjusting the opening degree of the exhaust control valve 301 to achieve fine-tuning of the pressure difference.

[0035] Three-stage adjustment: The frequency of the fresh air fan 204 is adjusted to assist in adjusting the internal pressure difference of the isolator body 100. When the pressure difference deviation is large and the effects of the first two stages of adjustment are not ideal, the frequency of the fresh air fan 204 is changed to adjust the amount of fresh air entering the isolator, thereby affecting the internal pressure and assisting in adjusting the pressure difference.

[0036] Fourth-level adjustment: The opening and closing of the air supply control valve 205 is adjusted to assist in adjusting the internal pressure difference of the isolator body 100. As the last-level adjustment method, if the pressure difference still cannot reach the set value after the first three-level adjustments, the opening and closing degree of the air supply control valve 205 is adjusted to precisely control the flow rate of the mixed gas entering the isolator, ensuring that the pressure difference is stable within the set range.

[0037] By setting a reasonable differential pressure range, the first differential pressure sensor 402 and the second differential pressure sensor 403 are used to detect the differential pressure parameters in real time. A multi-level control mechanism is adopted to control the exhaust fan 302, the exhaust control valve 301, the fresh air fan 204 and the supply air control valve 205, thereby achieving stable and precise adjustment of the differential pressure of the isolator body 100 and meeting the high requirements of differential pressure control in special environments.

[0038] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A flexible isolator, characterized in that, include: Isolator body (100); An air inlet duct (200) includes a compressed air control valve (201), a fresh air control valve (203), a fresh air fan (204), and a supply air control valve (205). The compressed air control valve (201) and the fresh air control valve (203) are respectively connected to the inlet of the fresh air fan (204), and the supply air control valve (205) is connected to the outlet of the fresh air fan (204) and the isolator body (100). An exhaust duct (300) is provided, the inlet of which is connected to the isolator body (100), and a temperature and humidity sensor (401) is provided at the outlet of the exhaust duct (300).

2. The soft isolator as described in claim 1, characterized in that, The air inlet duct (200) also includes: A flow controller (202) is connected between the compressed air control valve (201) and the fresh air fan (204).

3. The soft isolator as described in claim 1, characterized in that, The exhaust duct (300) includes: An exhaust control valve (301) is connected between the isolator body (100) and the exhaust fan (302); An exhaust fan (302) is provided with the temperature and humidity sensor (401) at its outlet.

4. The flexible isolator as described in claim 1, characterized in that, The isolator body (100) is provided with an air inlet filter (101) and an air outlet filter (102). The air inlet filter (101) is connected to the air inlet pipe (200), and the air outlet filter (102) is connected to the air outlet pipe (300).

5. The soft isolator as described in claim 4, characterized in that, The isolator body (100) is provided with an intermediate filter (103) to divide the interior of the isolator body (100) into an operating chamber (110) and a transfer chamber (120). The operating chamber (110) is located between the inlet filter (101) and the intermediate filter (103), and the transfer chamber (120) is located between the intermediate filter (103) and the outlet filter (102).

6. The soft isolator as described in claim 5, characterized in that, The operating chamber (110) is equipped with a first differential pressure sensor (402), and the transmission chamber (120) is equipped with a second differential pressure sensor (403).

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