Static pressure type independent air supply and exhaust ventilation system, assembly, rotating assembly and device

Abstract

The invention discloses a static pressure type independent air supply and exhaust ventilation system, assembly, rotating assembly and device.The ventilation system comprises a static pressure box body, and the static pressure box body comprises an air inlet buffering main body, a first air outlet buffering main body and a second air outlet buffering main body, the first buffer chamber is provided with an air inlet communicated with the ventilation main machine and an independent air supply outlet used for supplying air to the feeding cages in a matched mode. The exhaust buffering main body is provided with a second buffering chamber, the second buffering chamber comprises a central chamber structure and a plurality of sub-chamber structures connected to the central chamber structure, and the second buffering chamber is provided with an air outlet and an independent air outlet which is used for exhausting air from each feeding cage box in a matched mode. By optimizing the air supply and exhaust design of the three-dimensional mouse breeding device, the fluctuation of the air supply pressure and the fluctuation of the air exchange speed are both within the range of 5% in the whole large-scale breeding system, and therefore the stability of batch feeding is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of animal breeding, and in particular relates to a static pressure type independent air supply and exhaust ventilation system, component, rotating component and device. Background Art

[0002] Mice are an important biological resource in the fields of biology, medicine and other research, and the market demand is huge. In large-scale feeding and breeding activities, it is necessary to provide a uniform and efficient air exchange environment for the feeding cage cluster, which can achieve efficient dehumidification and temperature control to meet the daily healthy growth needs of mice. The existing cage system adopts a centralized air supply and exhaust method, so that the air supply flow rate obtained in cages at different positions is significantly different, so that the ventilation speed of some cages is too slow, resulting in excessive humidity, insufficient oxygen, and humid environment, which is not conducive to the survival and growth and development of mice.

[0003] Therefore, in view of the above technical problems, it is necessary to provide a static pressure independent air supply and exhaust ventilation system, components, rotating components and devices.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a static pressure type independent air supply and exhaust ventilation system, component, rotating component and device.

[0006] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows:

[0007] The static pressure type independent air supply and exhaust ventilation system includes a ventilation host and a static pressure box, which includes:

[0008] An air inlet buffer body, which has a first buffer chamber, the first buffer chamber has an air inlet connected to the ventilation main unit and an independent air supply port matched to supply air to each breeding cage box, and the air inlet direction of the air inlet (the air inlet direction can be the air flow path where the center line of the air duct of the air inlet is located) is defined as the air inlet reference path;

[0009] An exhaust buffer body has a second buffer chamber, which includes a central chamber structure and a plurality of sub-chamber structures connected thereto, the second buffer chamber has an air outlet connected to a filter device and a matching independent exhaust port for exhausting air from each breeding cage, the exhaust port is connected to the sub-chamber structure, and for each exhaust port and / or air supply port, there is a pressure difference at both ends (i.e., air pressure difference, the existence of air pressure difference can realize the flow of gas in the cage), and the pressure difference is designed to be coordinated with at least the ventilation cross-sectional size of the exhaust port and / or air supply port and the structural design of the second buffer chamber (the structural design may include shape, size, etc.) to limit the exhaust speed of the exhaust port of each breeding cage. For example, the exhaust port connected to the cage box has an air pressure P1 at one end adjacent to the breeding cage box and an air pressure P2 at the other end away from the breeding cage box, and the pressure difference ΔP=P1-P2>0, and the pressure difference is designed to be coordinated with at least the ventilation cross-sectional size of the exhaust port and any one of the second buffer chambers to limit the exhaust speed of the exhaust port of each breeding cage box. Based on the basic idea that the gas flow rate is positively correlated with the pressure difference ΔP, the scheme of the present invention optimizes the associated air inlet structure or exhaust structure to meet the balanced control of the ventilation flow between each cage box. The exhaust port and / or air supply port refers to at least one of the two, the same below.

[0010] In one or more embodiments of the present invention, when the sub-chamber structures are of equal cross-section when observed in the direction away from the central chamber structure, the exhaust outlets and / or air supply outlets connected to the same sub-chamber structure are at least limited to a ventilation cross-section of the exhaust outlets and / or air supply outlets away from a reference path that is larger than the ventilation cross-section of the exhaust outlets and / or air supply outlets adjacent to the reference path.

[0011] In one or more embodiments of the present invention, when the cross-sectional area of ​​the sub-chamber structure decreases as viewed in a direction away from the central chamber structure, the exhaust port and / or the air supply port connected to the same sub-chamber structure are at least defined as:

[0012] The ventilation cross section of the air outlet and / or air supply outlet far from the reference path is larger than the ventilation cross section of the air outlet and / or air supply outlet adjacent to the reference path; or

[0013] The ventilation cross-section of each exhaust port and / or air supply port remains unchanged.

[0014] Preferably, the sub-chamber structures are symmetrically distributed on both sides of the central chamber structure.

[0015] Preferably, the volume ratio of the first buffer chamber to the second buffer chamber is (2-1000):1.

[0016] Preferably, from the direction of the air inlet distance from near to far, the ventilation cross section of the air outlet (referring to the area of ​​the minimum cross section allowing gas flow in the same air outlet structure, the same below) increases from small to large.

[0017] In one or more embodiments of the present invention, when the cross-sectional area of ​​the sub-chamber structure decreases, the cross-sectional area S1 of the sub-chamber structure closest to the central chamber structure and the cross-sectional area S2 of the sub-chamber structure farthest from the central chamber structure satisfy: S1:S2=(1.5-10):1.

[0018] In one or more embodiments of the present invention, the trend of the ventilation cross section of the air supply port from small to large satisfies any of the following:

[0019] The radius or side length of the air outlet increases linearly with increasing ranking; or the cross-sectional area of ​​the air outlet increases linearly with increasing ranking; or the cross-sectional area of ​​the air outlet increases in stages with increasing ranking; or the radius or side length of the air outlet increases in stages with increasing ranking.

[0020] In one or more embodiments of the present invention, the exhaust buffer body is confined within the first buffer chamber.

[0021] In one or more embodiments of the present invention, the first buffer chamber is plane-symmetrical with respect to a plane where a center line of the exhaust buffer body and a center line of the first buffer chamber are located.

[0022] In one or more embodiments of the present invention, the trend of the ventilation cross section of the exhaust port decreasing from large to small along the direction toward the central chamber structure satisfies any of the following:

[0023] The radius or side length of the exhaust vent decreases linearly with increasing ranking; or the cross-sectional area of ​​the exhaust vent decreases linearly with increasing ranking; or the cross-sectional area of ​​the exhaust vent decreases in stages with increasing ranking; or the radius or side length of the exhaust vent decreases in stages with increasing ranking.

[0024] In one or more embodiments of the present invention, the components include several cage assemblies and a static pressure independent air supply and exhaust ventilation system. Any cage assembly independently has several breeding cages. The cage assembly is matched to one side of the static pressure box body and matched to the supply and exhaust outlets.

[0025] In one or more embodiments of the present invention, the rotating assembly, including the assembly and a power device for driving the assembly to rotate, rotates to adjust the orientation of the cage assembly.

[0026] In one or more embodiments of the present invention, the feeding device includes a ventilation main unit, a filtering device, and also includes a static pressure type independent air supply and exhaust ventilation system or component or a rotating component.

[0027] In one or more embodiments of the present invention, the feeding device further comprises a frame provided with a walking device, and the frame is used to carry at least any one of the following: a ventilation main unit, a filtering device, a static pressure independent air supply and exhaust ventilation system, a component, and a rotating component.

[0028] Compared with the prior art, the static pressure independent air supply and exhaust ventilation system, components, rotating components and devices of the present invention optimize the air supply and exhaust design of the three-dimensional mouse breeding device, thereby achieving fluctuations in air supply pressure and ventilation speed within the range of 5% (referring to the fluctuation of the highest and lowest values ​​compared to the median) in the entire large-scale breeding system, thereby ensuring the stability of batch feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of a static pressure type independent air supply and exhaust ventilation system in one embodiment of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of a feeding device in one embodiment of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of a feeding device in one embodiment of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of a feeding device in one embodiment of the present invention;

[0034] Figure 5 Schematic diagram of the structural combination state of the second buffer chamber in one embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] The scheme of the present invention satisfies the balanced control of the ventilation flow between each cage box by optimizing the associated air inlet structure or exhaust structure. That is, through the structural design of the system, it is achieved that for each exhaust port and / or air supply port, there is a pressure difference at both ends, and the pressure difference is designed to be matched with at least the ventilation cross-sectional size of the exhaust port and / or air supply port and the structural design of the second buffer chamber to limit the exhaust speed of the exhaust port of each breeding cage box. For example, the exhaust port connected to the cage box has an air pressure P1 at one end adjacent to the breeding cage box and an air pressure P2 at the end away from the breeding cage box, and the pressure difference ΔP=P1-P2>0, and the pressure difference is designed to be matched with at least the ventilation cross-sectional size of the exhaust port and the second buffer chamber to limit the exhaust speed of the exhaust port of each breeding cage box. Therefore, the embodiment of the present invention provides limited conditions for airflow control by designing the structural dimensions between the air inlet buffer body 20 or the air exhaust buffer body, so as to meet the design of the exhaust port and the air supply port of each cage box to overcome the influence of turbulence, laminar flow, wind resistance, etc., and realize the control of the gas flow or gas exchange speed in each cage box.

[0037] like Figure 1-5 As shown, the static pressure type independent air supply and exhaust ventilation system in one embodiment of the present invention includes a ventilation main unit and a static pressure box, wherein the static pressure box includes: an air inlet buffer main body 20, which has a first buffer chamber, the first buffer chamber has an air inlet 21 connected to the ventilation main unit and an independent air supply port 22 matched to supply air to each breeding cage box 12, and the air inlet 21 is from near to far, as shown in FIG. Figure 1In the direction indicated by the middle arrow, the ventilation cross section of the air supply port 22 increases from small to large; the exhaust buffer body has a second buffer chamber, and the first buffer chamber has an air outlet connected to the filter device and an independent exhaust port 32 matched to exhaust air from each breeding cage 12. Further, the volume ratio of the first buffer chamber and the second buffer chamber can be defined as (2-1000): 1. Here, the first buffer chamber of the air intake buffer body 20 is used to buffer the air intake of the air intake port 21 connected to the ventilation host, thereby preventing the intake air flow provided by the ventilation host from blowing directly to the air supply port 22, that is, blowing directly into the mouse living space inside the cage 12. The buffer structure of the present invention is to buffer the air inlet buffer pressure of the air supply port 22 and the exhaust buffer pressure of the air outlet 32 ​​in the whole system through the cooperation between the air inlet buffer body 20 and the air exhaust buffer body, thereby improving the air supply stability in the cage box 12. Here, the control of the pressure or volume of the second buffer chamber participates in the pressure balance or buffering effect in the whole system. The volume transformation between the first buffer chamber and the second buffer chamber in the whole system and the distance and pressure between the exhaust port 32, the air supply port 22 and the air inlet 21 achieve the stable pressure in different cage boxes 12 and the stable air intake and exhaust speed, and the fluctuation between them is less than 5%. It should be noted that the arrangement array formed by the exhaust port 32 and the air supply port 22 is determined by the size of the cage box 12. Of course, in order to meet the feeding requirements, the caliber of the exhaust port 32 and the air supply port 22 connected to the cage box 12 should also meet the requirements of the cage box 12 size or feeding scale.

[0038] In one embodiment of the present invention, since the pressure or airflow exchange speed in the cage box 12 is jointly limited by the air supply parameters (such as air supply pressure, caliber, etc.) of the air supply port 22 and the exhaust parameters (such as caliber, etc.) of the exhaust port 32, the exhaust port 32 can be set to be from the direction of the distance from the air inlet 21 from near to far, and the ventilation cross-section of the exhaust port 32 is reduced from large, or it can also be set to be from the direction of the distance from the air inlet 21 from near to far, and the ventilation cross-section of the exhaust port 32 is unchanged. Further, the trend of the ventilation cross-section of the exhaust port 32 from large to small can be any of the following: the radius or side length of the exhaust port 32 decreases linearly with the increase of the order (the order can be carried out in sequence from the direction of the distance from the air inlet 21 from near to far, the same below); or the cross-sectional area of ​​the exhaust port 32 decreases linearly with the increase of the order; or the cross-sectional area of ​​the exhaust port 32 decreases in stages with the increase of the order; or the radius or side length of the exhaust port 32 decreases in stages with the increase of the order.

[0039] In one embodiment of the present invention, since the pressure or air flow exchange speed in the cage box 12 is jointly limited by the air supply parameters of the air supply port 22 (such as air supply pressure, caliber, etc.) and the exhaust parameters of the air exhaust port 32 (such as caliber, etc.), the ventilation capacity of the air supply port 22 is designed to increase with the pressure decay in the static pressure box, that is, the ventilation cross-section of the air supply port 22 increases from small to far from the air inlet 21, and the increasing trend can be any of the following: the radius or side length of the air supply port 22 increases linearly with the increase in the order; or the cross-sectional area of ​​the air supply port 22 increases linearly with the increase in the order; or the cross-sectional area of ​​the air supply port 22 increases in stages with the increase in the order; or the radius or side length of the air supply port 22 increases in stages with the increase in the order.

[0040] In one embodiment of the present invention, the exhaust buffer body is confined within the first buffer chamber, that is, the exhaust buffer body as a whole can be confined therein, so that the structure of the entire system can be simplified and the limitation on the exhaust pressure of the exhaust port 32 can be satisfied. Furthermore, since the exhaust buffer body in this scheme is mainly arranged in a fishbone structure, thereby limiting the first buffer chamber to be symmetrical with respect to the plane where the center line of the exhaust buffer body and the center line of the first buffer chamber are located, at this time, since the exhaust airflow is exhausted by the symmetrical branch exhaust ducts 34 at both ends of the central exhaust duct 33, the exhaust air intake is symmetrically pressure buffered on both sides, thereby performing exhaust pressure buffering in the entire fishbone structure, thereby achieving the purpose of exhaust control.

[0041] In one embodiment of the present invention, the fishbone-shaped structure of the exhaust buffer body may include a central exhaust pipe 33 connected to a filter and other facilities and a branch exhaust pipe 34 connected to the central exhaust pipe 33 and used to connect the exhaust ports 32. Figure 1 In the illustrated case, the branch exhaust ducts 34 may be symmetrically arranged on both sides of the central exhaust duct 33, and the arrangement form and scale of the branch exhaust ducts 34 need to be adapted to the arrangement of the cage box 12. The branch exhaust ducts 34 are used to collect the exhaust gas of each cage box 12 and then collect it into the central exhaust duct 33, and then the central exhaust duct 33 further discharges it to the post-processing equipment such as the filtering device, and then it can be emptied.

[0042] Furthermore, as Figure 1 In one embodiment shown, the branch exhaust duct 34 has a box structure with one end open on one side of the central exhaust duct 33, and the open end of the structure is defined by a connection joint connected to the central exhaust duct 33. The connection joint is provided with ports on both sides of the central exhaust duct 33, and the ports are closely matched with the opening of the box structure. The connection joint and the central exhaust duct 33 can be connected through a window.

[0043] Furthermore, when observed from a direction perpendicular to the array of cage boxes 12, the box structure has a trapezoidal cross-section, and the top of the trapezoid is on the side away from the central exhaust duct 33, so that the structure can adapt to the problem of low pressure caused by low air flow at the far end. In order to meet the pressure balance requirements, it should be noted that the top size of the trapezoid here limits the bottom size of the trapezoid, that is, the bottom size should not be greater than 3 times the top size, and the depth of the branch exhaust duct 34 (the inner cavity depth perpendicular to the trapezoidal direction) is not greater than half of the depth of the central exhaust duct 33 in the same direction, and not less than one tenth. Only in this way can the pressure in the exhaust buffer body be controlled to meet the pressure fluctuation control requirements of each area, thereby realizing the fluctuation control of the air supply pressure and flow rate in the entire cage box 12 in cooperation with the air inlet buffer body 20, and achieving a fluctuation range of less than 5%.

[0044] Furthermore, the herringbone structure of the exhaust buffer body formed by the aforementioned branch exhaust duct 34 (perpendicular to the direction of the arrow, the length of the branch exhaust duct 34 on one side of the central exhaust duct 33 is d) and the central exhaust duct 33 (perpendicular to the direction of the arrow, the width of the central exhaust duct 33 is l) is confined in the first buffer chamber and the end of the branch exhaust duct 34 touches the inner wall of the first buffer chamber (so the width of the first buffer chamber is 2d+l). At this time, in the chamber, due to the existence of the herringbone structure formed by the branch exhaust duct 34 and the central exhaust duct 33, wind resistance is easily formed, so that the air flow entry capacity or air supply capacity of the air supply ports 22 arranged on the different branch exhaust ducts 34 are inconsistent. Therefore, it is necessary to pay attention to the influence of negative pressure areas, laminar flows, etc. Figure 1 As shown in the figure, the air inlet 21 should not be too close or too far from the central exhaust duct 33. If it is too close, it will affect the diffusion and the air inlet 21 on the other side of the central exhaust duct 33 will not be effectively supplied with gas. If it is too far, it will easily form a large aerodynamic shadow area between the central exhaust duct 33, making it impossible to effectively supply air to the air supply outlet 22 in the shadow area and the cage box 12 matched with it. The core area of ​​the shadow area may even trigger a state of static pressure and no airflow. Therefore, the distance between the center line of the air inlet 21 and the central exhaust duct 33 is between 1 / 5-1 / 3d to avoid affecting the air intake capacity of the closest air supply outlet 22.

[0045] Further, such as Figure 5 As shown in b1, when the exhaust ducts 34 are of equal cross-section, the exhaust ports connected to the same exhaust duct 34 are at least limited to have a ventilation cross-section of the exhaust ports away from the central chamber structure larger than that of the exhaust ports adjacent to the central chamber structure.

[0046] Further, such as Figure 5As shown in a1 and a2, when the cross-sectional area of ​​the exhaust duct 34 decreases in the direction away from the central chamber structure, the exhaust outlets connected to the same exhaust duct 34 are at least limited to a ventilation cross-section of the exhaust outlet away from the central chamber structure being larger than the ventilation cross-section of the exhaust outlet adjacent to the central chamber structure or the ventilation cross-section of each exhaust outlet remains unchanged.

[0047] exist Figure 5 The setting of the middle exhaust vents can also be applied to the setting of the supply vents.

[0048] In one embodiment of the present invention, a component may be provided, which includes a plurality of cage assemblies and a static pressure type independent air supply and exhaust ventilation system, wherein any cage assembly independently has a plurality of feeding cages 12, and the cage assembly is matchedly arranged on one side of the static pressure box and matchedly connected to the air supply port 22 and the air exhaust port 32. Each cage assembly may have a frame 10, a limiting seat 11 arranged on the frame 10 for limiting the cage, and an n*m cage 12 array arranged on the frame, and the array is connected to one side of the static pressure box with a multi-faceted structure through matching air supply port 22 assemblies and air exhaust port 32 assemblies such as vents connected to the air supply port 22 and the air exhaust port 32, thereby forming a multi-faceted feeding system that improves the comprehensive utilization efficiency of space. Furthermore, the static pressure box with a multi-faceted structure may be provided with a rotating shaft at its center, so that the multi-faceted cage assembly can rotate around the axis, exposing the designated cage assembly for easy operation and observation, etc., thereby satisfying the feeding in corners or against the wall, thereby improving the convenience and controllability of operation in a complex feeding space. Figure 4 As shown, a situation in which two-sided feeding can be implemented is shown, in which the space near the wall is utilized. There are other situations in which three-sided feeding or four-sided feeding are provided, and only the air inlet buffer body 20 and its attached exhaust structure need to be matched accordingly.

[0049] In one embodiment of the present invention, the rotating assembly, including the assembly and the power device for driving the assembly to rotate, rotates to meet the cage assembly to adjust the direction. Furthermore, the static pressure box body with a multi-faceted structure can also be provided with a rotating shaft at its center, so that it can rotate around the shaft under the drive of a driving device such as a motor, so that the designated cage assembly is exposed for easy operation and observation, etc., so as to meet the feeding needs of corners or spaces against walls, thereby improving the convenience and controllability of operation in complex feeding spaces. At this time, the system can also be equipped with a control panel such as a touch screen and an intelligent controller such as a microcomputer, so as to realize convenient control of the ventilation host, motor, etc.

[0050] In one embodiment of the present invention, the feeding device includes a ventilation main unit, a filtering device, and also includes a static pressure independent air supply and exhaust ventilation system or component or a rotating component, so as to complete the functions of clean air introduction and exhaust gas discharge.

[0051] In one embodiment of the present invention, the feeding device further comprises a frame provided with a walking device 13 (such as a universal wheel, etc., which may have a locking structure), and the frame is used to carry at least any of the following: a ventilation main unit, a filter device, a static pressure independent air supply and exhaust ventilation system, a component, and a rotating component. As shown in the figure, the ventilation main unit, the filter device, etc. can be arranged at other positions and connected to the air inlet 21 or the central exhaust pipe 33 through a pipeline, so as to meet the demand for external circulation of gas in the system.

[0052] Example 1

[0053] This embodiment specifically describes Figure 1-3 In one embodiment shown, a 3*10 cage array evenly distributed on one side is shown. The cage size is 20*20*35cm, the first buffer chamber size is 65*10*210cm, the central exhaust duct 33 adopts a square tube with an inner cavity size of 10*10*210cm, and the 10*210 surface fits the chamber. It is arranged at the center line of the first buffer chamber. The top size of the trapezoidal inner cavity formed by the exhaust duct 34 is 2*2cm, and the bottom size is 4*2cm. The connection position of the air supply port 22 and the connection position of the exhaust port 32 are arranged on one side of the first buffer chamber. The air intake speed of the air inlet 21 is 200L / min. The air inlet 21 adopts top air intake, and the distance between its center line position and the central exhaust duct 33 is 6cm. The numbering is performed in the direction away from the air inlet. The initial inner diameter of the air supply vent 22 is 10 mm, and the inner diameter increases by 0.5 mm for each increase in the counting number. The exhaust vent 32 adopts a uniform inner diameter of 8 mm. When 5 3-week-old mice are fed in each cage, the humidity, odor, oxygen content, etc. of each cage meet their growth requirements, and the fluctuation of the gas exchange rate between each cage is less than 5% compared with the mean.

[0054] Example 2

[0055] This embodiment specifically describes Figure 4 In one embodiment shown, based on the structure shown in Example 1, the following adjustments can be made: the size of the first buffer chamber is 65*15*210cm, and the air intake speed of the air inlet 21 is 300L / min. Air supply ports 22 and air exhaust ports 32 are arranged on opposite sides of the first buffer chamber. In the direction away from the air inlet, the inner diameters of the air supply ports 22 numbered 1-7 are 10, 10, 11, 11, 12, 13, and 14mm; the exhaust ports 32 have a uniform inner diameter of 8mm. When 5 3-week-old mice were fed in each cage, the humidity, odor, oxygen content, etc. of each cage met their growth requirements, and the fluctuation of the gas exchange rate between each cage compared to the mean was less than 5%.

[0056] Example 3

[0057] The difference between this embodiment and embodiment 1 is that a single-sided 6*10 cage box array is used, and the inner diameter of the air supply port 22 is 10 mm, and the inner diameter of the air exhaust port 32 is 8 mm. Figure 5 A situation shown in a2.

[0058] In the same row (i.e. the exhaust outlets connected to the exhaust duct 34 at the same height are numbered 1-6 in sequence), the top supply and exhaust are tested from high to low in rows 1-10 under different fan supply powers at each exhaust outlet, in L / min, and the results are as follows:

[0059]

[0060]

[0061] Example 4

[0062] The difference between this embodiment and embodiment 1 is that the top size of the trapezoidal inner cavity formed by the exhaust duct 34 is 2*2cm, and the bottom size is 20*2cm. When 5 3-week-old mice are fed in each cage, the humidity, odor, oxygen content, etc. of each cage meet their growth requirements, and the fluctuation of the gas exchange rate between each cage is less than 5% compared with the mean.

[0063] Example 5

[0064] The difference between this embodiment and embodiment 1 is that the top size of the trapezoidal inner cavity formed by the exhaust duct 34 is 2*2cm, and the bottom size is 3*2cm. When 5 3-week-old mice are fed in each cage, the humidity, odor, oxygen content, etc. of each cage meet their growth requirements, and the fluctuation of the gas exchange rate between each cage is less than 5% compared with the mean.

[0065] Example 6

[0066] The difference between this embodiment and embodiment 1 is that the top size of the trapezoidal inner cavity formed by the exhaust duct 34 is 2*2cm, and the bottom size is 10*2cm. When 5 3-week-old mice are fed in each cage, the humidity, odor, oxygen content, etc. of each cage meet their growth requirements, and the fluctuation of the gas exchange rate between each cage is less than 5% compared with the mean.

[0067] Example 7

[0068] The difference between this embodiment and embodiment 1 is that the cross-sectional size of the rectangular inner cavity formed by the air outlet duct 34 is 2*2cm, and the air outlet 22 is numbered in the direction away from the air inlet. The initial inner diameter of the air supply duct 22 is 10mm, and the inner diameter increases by 0.5mm for each increase in the count number. The initial inner diameter of the air outlet 32 ​​is 10mm, and the inner diameter increases by 0.3mm for each increase in the count number. Figure 5A situation shown in b1 in Figure 1. When 5 3-week-old mice are fed in each cage, the humidity, odor, oxygen content, etc. of each cage meet their growth requirements, and the fluctuation of the gas exchange rate between the cages compared to the mean is less than 5%.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0070] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A static pressure independent air supply and exhaust ventilation system, characterized in that: Also included is a static pressure box, which includes: An air inlet buffer body, which has a first buffer chamber, wherein the first buffer chamber has an air inlet connected to the ventilation main unit and an independent air supply port matched to supply air to each feeding cage box, and the air inlet direction of the air inlet is defined as an air inlet reference path; An exhaust buffer body, which has a second buffer chamber, wherein the second buffer chamber includes a central chamber structure and a plurality of sub-chamber structures connected thereto, wherein the second buffer chamber has an air outlet and an independent exhaust port matched to exhaust air from each breeding cage, wherein the exhaust port is connected to the sub-chamber structure; For each exhaust port and / or air supply port, the following conditions are met: there is a pressure difference at both ends thereof, and the pressure difference is designed to be coordinated with at least the ventilation cross-sectional size of the exhaust port and / or air supply port and the structural design of the second buffer chamber to limit the exhaust speed of the exhaust port of each breeding cage.

2. The static pressure independent air supply and exhaust ventilation system according to claim 1 is characterized in that: When observed in the direction away from the central chamber structure, the sub-chamber structures are of equal cross-section, the exhaust outlets and / or air supply outlets connected to the same sub-chamber structure are at least limited to a ventilation cross-section of the exhaust outlets and / or air supply outlets away from the reference path being larger than the ventilation cross-section of the exhaust outlets and / or air supply outlets adjacent to the reference path.

3. The static pressure independent air supply and exhaust ventilation system according to claim 1 is characterized in that: When the cross-sectional area of ​​the sub-chamber structure decreases when viewed in a direction away from the central chamber structure, the exhaust port and / or the air supply port connected to the same sub-chamber structure are at least limited to: The ventilation cross section of the air outlet and / or air supply outlet far from the reference path is larger than the ventilation cross section of the air outlet and / or air supply outlet adjacent to the reference path; or The ventilation cross-section of each exhaust port and / or air supply port remains unchanged.

4. The static pressure independent air supply and exhaust ventilation system according to claim 1 is characterized in that: When the cross-sectional area of ​​the sub-chamber structure decreases, the cross-sectional area S1 of the sub-chamber structure closest to the central chamber structure and the cross-sectional area S2 of the sub-chamber structure farthest from the central chamber structure satisfy: S1:S2=(1.5-10):

1.

5. The static pressure independent air supply and exhaust ventilation system according to claim 1 is characterized in that: As the distance from the air inlet increases from near to far, the ventilation cross section of the air supply outlet increases from small to large.

6. The static pressure independent air supply and exhaust ventilation system according to claim 1 is characterized in that: In the direction from the air inlet distance to the far direction, the ventilation cross section of the air outlet increases from small to large, and the trend of the ventilation cross section of the air outlet increases from small to large satisfies any of the following: The radius or side length of the air outlet increases linearly with increasing ranking; or the cross-sectional area of ​​the air outlet increases linearly with increasing ranking; or the cross-sectional area of ​​the air outlet increases in stages with increasing ranking; or the radius or side length of the air outlet increases in stages with increasing ranking.

7. The static pressure independent air supply and exhaust ventilation system according to claim 1 is characterized in that: The exhaust buffer body is confined in the first buffer chamber.

8. The static pressure independent air supply and exhaust ventilation system according to claim 7 is characterized in that: The first buffer chamber is plane-symmetrical with respect to a plane where a center line of the exhaust buffer body and a center line of the first buffer chamber are located.

9. The static pressure independent air supply and exhaust ventilation system according to claim 1, characterized in that: Along the direction of the central chamber structure, the ventilation cross section of the exhaust port decreases from large to small, satisfying any of the following: The radius or side length of the exhaust vent decreases linearly with increasing ranking; or the cross-sectional area of ​​the exhaust vent decreases linearly with increasing ranking; or the cross-sectional area of ​​the exhaust vent decreases in stages with increasing ranking; or the radius or side length of the exhaust vent decreases in stages with increasing ranking.

10. An assembly comprising a plurality of cage assemblies and a static pressure type independent air supply and exhaust ventilation system according to any one of claims 1 to 9, wherein any of the cage assemblies independently has a plurality of feeding cages, and the cage assemblies are matchedly arranged on one side of the static pressure box body and matchedly connected to the air supply port and the air exhaust port.

11. A rotating assembly, comprising the assembly according to claim 8 and a power device for driving the assembly to rotate, wherein the rotation is for adjusting the orientation of the cage assembly.

12. A feeding device, comprising a ventilation main unit and a filtering device, characterized in that: It also includes a static pressure independent air supply and exhaust ventilation system according to any one of claims 1-9, or a component according to claim 10, or a rotating component according to claim 11.

13. The feeding device according to claim 12, characterized in that It also includes a frame with a walking device, and the frame is used to carry at least any of the following: a ventilation main unit, a filtering device, a static pressure independent air supply and exhaust ventilation system according to any of claims 1-9, an assembly according to claim 10, and a rotating assembly according to claim 11.

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