An IVC batch air supply and exhaust structure

Abstract

This utility model relates to a batch ventilation structure for IVC (Indoor Ventilation Chamber), comprising a laboratory and a mezzanine located at the top of the laboratory. The laboratory contains several cage racks, each with several cage boxes. The upper part of the cage rack has a main air inlet pipe, and the lower part has a main exhaust pipe. Each cage box is connected to the main air inlet pipe by an air inlet branch pipe and to the main exhaust pipe by an exhaust branch pipe. The mezzanine contains a ventilation system, which includes an air inlet unit and an exhaust unit. The laboratory and the mezzanine are connected by an updraft. The air inlet end of the air inlet unit communicates with the internal space of the mezzanine, and the air outlet end of the air inlet unit is connected to the main air inlet pipe of each cage rack via a pipe. The air inlet end of the exhaust unit is connected to the main exhaust pipe of each cage rack via a pipe, and the air outlet end of the exhaust unit is connected to an outward exhaust pipe. Installing the main units in the mezzanine at the top of the laboratory saves space; one ventilation system supplies and exhausts air to the cage boxes on multiple cage racks, allowing for a large breeding capacity, increasing breeding volume, and saving costs.

Description

Technical Field

[0001] This utility model relates to the field of laboratory animal management technology, and in particular to a batch ventilation structure for IVC. Background Technology

[0002] IVC system: Independent ventilation system for laboratory animals, a key part of laboratory animal facilities, mainly composed of main unit, cage rack, and cage box; IVC main unit: experimental equipment used for raising and breeding SPF grade mice.

[0003] The IVC system is a new type of animal cage that has emerged and been gradually adopted in the last decade or so. With the standardization and international alignment of drug, food, and biosafety evaluation and management, its use in my country is also expanding. By providing each cage with independent air supply and ventilation pathways and an independent rearing environment, the IVC system effectively avoids cross-infection between animals in different cages, ensuring the quality and reproducibility of laboratory animals and animal experiments. Therefore, it is widely used in the rearing of specific pathogen-free (SPF) animals such as mice and rats.

[0004] There are many types of IVC main unit equipment available, but they differ in structure, shape and function. Common IVC systems on the market can only be matched with 1-3 cages per main unit, and the number of IVC systems that can be accommodated in each room is limited, resulting in low space utilization, low breeding capacity and high cost. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an IVC batch ventilation structure that saves space, increases the feeding capacity, and reduces costs.

[0006] This utility model is implemented using the following scheme: an IVC batch ventilation structure, including a laboratory and a mezzanine located at the top of the laboratory. The laboratory is equipped with several cage racks, each cage rack having several cage boxes. The upper part of the cage rack is equipped with a main air inlet pipe, and the lower part is equipped with a main air outlet pipe. Each cage box is connected to the main air inlet pipe by an air inlet branch pipe and to the main air outlet pipe by an air outlet branch pipe. The mezzanine is equipped with a ventilation system, which includes an air inlet unit and an air outlet unit. The laboratory and the mezzanine are connected by an updraft. The air inlet end of the air inlet unit communicates with the internal space of the mezzanine. The air outlet end of the air inlet unit is connected to the main air inlet pipe of each cage rack through a pipe. The air inlet end of the air outlet unit is connected to the main air outlet pipe of each cage rack through a pipe. The air outlet end of the air outlet unit is connected to an outward exhaust pipe.

[0007] Furthermore, the air intake host includes an air intake frame and an air intake box shell located outside the air intake frame. The air intake box shell is provided with a primary filter, a first air intake hood, a high-efficiency filter A, a second air intake hood, and an air intake pipe sleeve connected in sequence along the air intake direction. The first air intake hood is provided with an air intake fan.

[0008] Furthermore, the air inlet housing has louvered openings on the side near the primary filter.

[0009] Furthermore, the second air inlet cover is sleeved on the air inlet cylinder facing the air inlet cylinder and can slide back and forth relative to it. The high-efficiency filter A is sandwiched between the first air inlet cover and the second air inlet cover. The air inlet host is provided with a clamping component A for controlling the back and forth movement of the second air inlet cover.

[0010] Furthermore, the clamping assembly A includes a transverse channel steel A fixedly connected to the side of the second air inlet cover away from the high-efficiency filter A, and a crossbar A that passes through the transverse channel steel A laterally and is rotatably connected to the air inlet frame at both ends. One end of the crossbar A is fixedly connected to a handle A, and the crossbar A is provided with an eccentric wheel A located inside the transverse channel steel A so that when the crossbar A rotates, the eccentric wheel A pushes against the inner wall of the transverse channel steel A to control the back-and-forth movement of the second air inlet cover.

[0011] Furthermore, the air intake unit is equipped with a temperature and humidity sensor and a differential pressure sensor. The probe of the temperature and humidity sensor is connected to one of the cage boxes on the cage frame, and the interface of the differential pressure sensor is connected to one of the cage boxes on the cage frame; a wind speed sensor is connected to the side of the air intake pipe sleeve.

[0012] Furthermore, the exhaust host includes an exhaust frame and an exhaust box shell located outside the exhaust frame. The exhaust box shell contains a first exhaust pipe sleeve, a first exhaust hood, a high-efficiency filter B, a second exhaust hood, and a second exhaust pipe sleeve connected in sequence along the air outlet direction. The second exhaust hood contains an exhaust fan.

[0013] Furthermore, the first exhaust hood is fitted onto the first exhaust pipe sleeve on the side facing the first exhaust pipe sleeve and can slide back and forth relative to it. The high-efficiency filter B is sandwiched between the first exhaust hood and the second exhaust hood. The exhaust host is provided with a clamping component B for controlling the back and forth movement of the first exhaust hood.

[0014] Furthermore, the clamping assembly B includes a transverse channel steel B fixedly connected to the side of the first exhaust hood facing away from the high-efficiency filter B, and a crossbar B that passes through the transverse channel steel B laterally and is rotatably connected to the exhaust frame at both ends. One end of the crossbar B is fixedly connected to a handle B, and the crossbar B is provided with an eccentric wheel B located inside the transverse channel steel B so that when the crossbar B rotates, it pushes against the inner wall of the transverse channel steel B to control the back-and-forth movement of the first exhaust hood.

[0015] Compared with the prior art, the present invention has the following advantages: the IVC batch ventilation structure installs the main unit in the mezzanine at the top of the laboratory, saving space; one ventilation system supplies and exhausts air to cages on multiple cage racks, allowing for a larger breeding capacity, increasing the breeding volume, and saving costs.

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0017] Figure 1 This is an overall structural outline drawing of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present utility model; Figure 3 This is an external view of the air intake unit according to an embodiment of this utility model; Figure 4 This is a schematic diagram of the internal structure of the air intake unit according to an embodiment of the present utility model; Figure 5 This is a cross-sectional view of the eccentric wheel A and the transverse channel steel A of the clamping assembly A in this embodiment of the present invention. Figure 6 This is an external view of the exhaust fan unit according to an embodiment of this utility model; Figure 7 This is a schematic diagram of the internal structure of the exhaust fan unit according to an embodiment of this utility model; Explanation of the numbers in the diagram: 1-Supply and exhaust ventilation system, 2-Cage frame, 3-Cage box, 4-Laboratory, 5-Mezzanine, 6-Upwind vent, 11-Air inlet unit, 111-Air inlet housing, 112-Air inlet frame, 113-Primary filter, 114-High-efficiency filter A, 115-First air inlet hood, 116-Second air inlet hood, 117-Air inlet duct sleeve, 118-Clamping assembly A, 1181-Transverse channel steel A, 1182-Horizontal bar A 1183-Eccentric wheel A, 119-Temperature and humidity sensor, 1110-Wind speed sensor, 1111-Differential pressure sensor, 12-Exhaust fan host, 121-Exhaust box housing, 122-Exhaust frame, 123-First exhaust hood, 124-Second exhaust hood, 125-First exhaust duct sleeve, 126-High-efficiency filter B, 127-Clamping assembly B, 128-Second exhaust duct sleeve, 13-Control box, 14-Touch screen. Detailed Implementation

[0018] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] like Figures 1-7 As shown, an IVC batch ventilation structure includes a laboratory 4 and a mezzanine 5 located at the top of the laboratory. The laboratory 4 contains several cages 2 and is composed of several partitioned rooms. Each cage has several cage boxes 3, with an air inlet main pipe at the top and an exhaust main pipe at the bottom. Each cage box is connected to the air inlet main pipe by an air inlet branch pipe and to the exhaust main pipe by an exhaust branch pipe. The mezzanine 5 contains a ventilation system 1, which includes an air inlet unit 11 and an exhaust unit 12. The laboratory and the mezzanine are connected by an updraft vent 6, and each room has an updraft vent 6 at the top. The air inlet end of the air inlet unit communicates with the internal space of the mezzanine, and the air outlet end of the air inlet unit is connected to the air inlet main pipe of each cage through a pipe. The air inlet end of the exhaust unit is connected to the exhaust main pipe of each cage through a pipe, and the air outlet end of the exhaust unit is connected to an outward exhaust pipe. The air supply and exhaust system 1 transmits air volume to each cage 3 through the main air intake pipe and the branch air intake pipe on the cage frame 2, and then exhausts the air in the cage 3 to the external exhaust pipe through the main exhaust pipe and the branch exhaust pipe on the cage frame 2; the cage frame 2 is used to place the cage 3, and the air supply and exhaust system 1 is connected to the air supply and exhaust of the cage 3; the cage 3 is used to raise mice and rats.

[0021] This IVC batch ventilation structure installs the main unit in the mezzanine at the top of the laboratory, saving space. One ventilation system can connect to rooms in multiple laboratories, supplying and exhausting air to cages on multiple cage racks. Conventional IVC systems can only accommodate a maximum of about 300 cages for mice, while this invention can accommodate more than 1,000 cages for mice, increasing the number of mice that can be housed and saving costs.

[0022] In this embodiment, the air intake host 11 includes an air intake frame 112 and an air intake housing 111 located outside the air intake frame. The air intake housing contains a pre-filter 113, a first air intake shroud 115, a high-efficiency filter A114, a second air intake shroud 116, and an air intake duct sleeve 117, all connected sequentially along the air intake direction. An air intake fan is installed inside the first air intake shroud. The air intake host 11 draws air from the room and delivers it to the cage box 3 through the cage frame 2. The pre-filter 113 filters airborne dust and particles from the intake air. The high-efficiency filter 114 is an H14 grade filter, further filtering the air to ensure the cleanliness of the air entering the cage box 3. The first air intake shroud 115 houses the air intake fan, which provides power to the air intake host. The second air intake shroud 116 is used to balance the air intake pressure.

[0023] In this embodiment, the air inlet housing has a louvered opening on the side near the primary filter. The air inlet unit 11 takes in air through the louvered opening and exits air through the air inlet pipe sleeve 117. The air outlet side of the air inlet housing 111 has an interface corresponding to the position of the air inlet pipe sleeve 117 for connecting pipes.

[0024] In this embodiment, the second air inlet cover 116 is sleeved on the air inlet cylinder facing the air inlet cylinder and can slide back and forth relative to it. The high-efficiency filter A114 is sandwiched between the first air inlet cover 115 and the second air inlet cover 116. The air inlet host is provided with a clamping component A118 for controlling the back and forth movement of the second air inlet cover.

[0025] In this embodiment, the clamping assembly A118 includes a transverse channel steel A1181 fixedly connected to the side of the second air inlet cover opposite to the HEPA filter A, and a crossbar A1182 passing transversely through the transverse channel steel A and rotatably connected to the air inlet frame at both ends. A handle A is fixedly connected to one end of the crossbar A. An eccentric wheel A located inside the transverse channel steel A is provided on the crossbar A so that when the crossbar A rotates, the eccentric wheel A1183 pushes against the inner wall of the transverse channel steel A, controlling the forward and backward movement of the second air inlet cover. By rotating the handle A, the clamping assembly A118 allows the second air inlet cover to slide left and right, facilitating the replacement of the HEPA filter A.

[0026] In this embodiment, the air intake unit is equipped with a temperature and humidity sensor 119 and a differential pressure sensor 1111. The probe of the temperature and humidity sensor is connected to one of the cage boxes on the cage frame, and the interface of the differential pressure sensor is connected to one of the cage boxes on the cage frame. A wind speed sensor 1110 is connected to the side of the air intake duct. The temperature and humidity sensor is used to detect the temperature and humidity of the rat's living environment inside the cage box; the wind speed sensor is used to measure the wind speed in the duct, adjust the fan speed and power to ensure a suitable airflow in the cage box 3; the interface of the differential pressure sensor is connected to the cage box 3 to detect the pressure difference inside the cage box and adjust the power of the air intake and exhaust units to control the pressure difference to the target value.

[0027] In this embodiment, the exhaust fan 12 includes an exhaust frame 122 and an exhaust housing 121 located outside the exhaust frame. The exhaust housing contains a first exhaust duct sleeve 125, a first exhaust hood 123, a high-efficiency filter B126, a second exhaust hood 124, and a second exhaust duct sleeve 128, all connected sequentially along the air outlet direction. An exhaust fan is installed inside the second exhaust hood. The exhaust fan 12 discharges the gas inside the cage 3 through the cage frame 2 to the outward exhaust duct. The exhaust housing 121 has interfaces on its inlet and outlet sides corresponding to the positions of the first and second exhaust duct sleeves, respectively, for connecting to the ducts. The high-efficiency filter B126 is an H14 grade filter used to filter the discharged air.

[0028] In this embodiment, the first exhaust hood is fitted onto the first exhaust duct sleeve on the side facing the first exhaust duct sleeve and can slide back and forth relative to it. The high-efficiency filter B is sandwiched between the first exhaust hood and the second exhaust hood. The exhaust host is provided with a clamping assembly B127 for controlling the back and forth movement of the first exhaust hood. The structure of the clamping assembly B127 is the same as that of the clamping assembly A118, which facilitates the replacement of the high-efficiency filter B126.

[0029] In this embodiment, the clamping assembly B includes a transverse channel steel B fixedly connected to the side of the first exhaust hood away from the high-efficiency filter B, and a crossbar B that passes through the transverse channel steel B laterally and is rotatably connected to the exhaust frame at both ends. One end of the crossbar B is fixedly connected to a handle B, and the crossbar B is provided with an eccentric wheel B located inside the transverse channel steel B so that when the crossbar B rotates, it pushes against the inner wall of the transverse channel steel B to control the back-and-forth movement of the first exhaust hood.

[0030] In this embodiment, a control box 13 is also provided inside the mezzanine. Temperature and humidity sensors 119, differential pressure sensors 1111, and wind speed sensors 1110 are electrically connected to the signal input terminals of the controller inside the control box 13. The signal output terminals of the controller are electrically connected to the air intake and exhaust fans. A touchscreen 14 is installed outside the laboratory. The control box 13 is the control unit for the entire equipment, centralizing the control of all electrical components. The touchscreen 14 is installed outside the laboratory to display equipment parameter information, function settings, etc.

[0031] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0032] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0033] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0034] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. An IVC batch ventilation structure, characterized in that: The enclosure includes a laboratory and a mezzanine above the laboratory. The laboratory contains several cage racks, each with a cage box. Each cage rack has a main air inlet pipe at the top and a main exhaust pipe at the bottom. Each cage box is connected to the main air inlet pipe by an air inlet branch pipe and to the main exhaust pipe by an exhaust branch pipe. The mezzanine contains a supply and exhaust ventilation system, including an air inlet unit and an exhaust unit. The laboratory and the mezzanine are connected via an updraft. The air inlet of the air inlet unit communicates with the interior space of the mezzanine, and the air outlet of the air inlet unit is connected to the main air inlet pipe of each cage rack via a pipe. The air inlet of the exhaust unit is connected to the main exhaust pipe of each cage rack via a pipe. The air outlet of the unit is connected to an outward exhaust duct; the air inlet unit includes an air inlet frame and an air inlet housing located outside the air inlet frame. The air inlet housing contains a pre-filter, a first air inlet hood, a high-efficiency filter A, a second air inlet hood, and an air inlet pipe sleeve connected in sequence along the air inlet direction. An air inlet fan is installed inside the first air inlet hood. The air exhaust unit includes an exhaust frame and an exhaust housing located outside the exhaust frame. The exhaust housing contains a first exhaust pipe sleeve, a first exhaust hood, a high-efficiency filter B, a second exhaust hood, and a second exhaust pipe sleeve connected in sequence along the air outlet direction. An exhaust fan is installed inside the second exhaust hood.

2. The IVC batch air supply and exhaust structure according to claim 1, characterized by: The air inlet housing has louvered openings on the side near the primary filter.

3. The IVC batch air supply and exhaust structure according to claim 1, characterized by: The second air inlet cover is sleeved on the air inlet cylinder facing the air inlet cylinder and can slide back and forth relative to it. The high-efficiency filter A is sandwiched between the first air inlet cover and the second air inlet cover. The air inlet host is provided with a clamping component A for controlling the back and forth movement of the second air inlet cover.

4. The IVC batch air supply and exhaust structure according to claim 3, characterized by: The clamping assembly A includes a transverse channel steel A fixedly connected to the side of the second air inlet cover away from the high-efficiency filter A, and a crossbar A that passes through the transverse channel steel A and is rotatably connected to the air inlet frame at both ends. One end of the crossbar A is fixedly connected to a handle A. The crossbar A is provided with an eccentric wheel A located inside the transverse channel steel A so that when the crossbar A rotates, the eccentric wheel A pushes against the inner wall of the transverse channel steel A to control the back-and-forth movement of the second air inlet cover.

5. The IVC batch ventilation structure of claim 1, wherein: The air intake unit is equipped with a temperature and humidity sensor and a differential pressure sensor. The probe of the temperature and humidity sensor is connected to one of the cage boxes on the cage frame, and the interface of the differential pressure sensor is connected to one of the cage boxes on the cage frame. A wind speed sensor is connected to the side of the air intake pipe.

6. The IVC batch air supply and exhaust structure according to claim 1, characterized in that: The first exhaust hood is fitted onto the first exhaust pipe sleeve on the side facing the first exhaust pipe sleeve and can slide back and forth relative to it. The high-efficiency filter B is sandwiched between the first exhaust hood and the second exhaust hood. The exhaust host is provided with a clamping component B for controlling the back and forth movement of the first exhaust hood.

7. The IVC batch air supply and exhaust structure according to claim 6, characterized in that: The clamping assembly B includes a transverse channel steel B fixedly connected to the side of the first exhaust hood away from the high-efficiency filter B, and a crossbar B that passes through the transverse channel steel B laterally and is rotatably connected to the exhaust frame at both ends. One end of the crossbar B is fixedly connected to a handle B. The crossbar B is provided with an eccentric wheel B located inside the transverse channel steel B so that when the crossbar B rotates, it pushes against the inner wall of the transverse channel steel B to control the back-and-forth movement of the first exhaust hood.

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