Laminar flow hood, operating room heating duct system

Abstract

The present application relates to a kind of laminar flow hood, including shell, filter cavity is opened in the shell, air inlet ring cavity and return air ring cavity;The return air ring cavity surrounds air inlet ring cavity, the air inlet ring cavity surrounds filter cavity, the filter cavity is communicated with air inlet ring cavity through the filter air inlet of four sides, air inlet channel is set to the air inlet ring cavity around each, each air inlet channel is from return air ring cavity and is worn out.A kind of operating room heating duct system, including laminar flow hood, multiple return air boxes and air conditioning unit;Each return air box is respectively connected with laminar flow hood;The air inlet, air outlet of air conditioning unit is connected with laminar flow hood respectively;The rest of return air pipe and fresh air inlet of air inlet channel not involved in pipeline connection are sealed using cover sealing.Wind channel system is integrated in the internal space of laminar flow hood, and wind pipe interface can be freely selected, while also simplifying the arrangement of operating room top wind pipe.

Description

Technical Field

[0001] This invention relates to the field of medical operating rooms, specifically to operating room laminar flow hoods and operating room heating, ventilation and air conditioning (HVAC) duct systems. Background Technology

[0002] Currently, prefabricated operating rooms are developing towards modularization and integration. Therefore, the HVAC duct system of the operating room also needs to be modularized and integrated.

[0003] The operating room HVAC system includes laminar flow hoods, multiple return air boxes, and air conditioning units. Each return air box is located at the base of the operating room's surrounding walls, while the air conditioning units are installed on one side of the operating room walls. The laminar flow hoods are installed at the top of the operating room. All components in the system are connected via pipes. Specifically, the air inlets of the air conditioning units connect to the pipes of each return air box. Since the return air boxes are distributed around the operating room, many pipes connect the return air boxes to the air conditioning units. Additionally, the air outlets of the air conditioning units connect to the fresh air inlets of the laminar flow hoods, which also involves multiple pipe connections. This results in a very complex HVAC system, with pipes spanning the entire top or sides of the operating room. This complexity hinders the rapid and flexible modular construction of the operating room, requiring a separate ductwork team during assembly and leading to higher ductwork and labor costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a laminar flow hood and operating room HVAC duct system, which solves the problems of complex piping and high cost in the previous operating room HVAC duct system, which is not conducive to the modular and integrated development of operating rooms.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] First aspect:

[0007] Provide a laminar flow hood, including

[0008] The housing has a filter chamber, an air inlet chamber, and an air return chamber inside it.

[0009] The return air ring cavity surrounds the inlet air ring cavity, the inlet air ring cavity surrounds the filter cavity, and a filter element is installed inside the filter cavity;

[0010] The filter chamber has filter air inlets around its perimeter and filter air outlets at its bottom. The filter chamber is connected to the air inlet ring chamber through the filter air inlets around its perimeter. Air inlet channels are provided around the air inlet ring chamber, and each air inlet channel passes through the air return ring chamber.

[0011] Return air pipes are arranged around the return air annular cavity, and each return air pipe is communicated with the return air annular cavity.

[0012] Further, the filtering cavity is divided into a plurality of filtering sub-cavities, a filter element is installed in each filtering sub-cavity, and the inlet side cavities of the filtering sub-cavities are communicated with each other, so that the air flow delivered from the air inlet annular cavity to the filtering cavity can enter each filtering sub-cavity.

[0013] Further, the number of the filtering sub-cavities is four, and the four filtering sub-cavities form a "grid-shaped" structure.

[0014] Further, both the air inlet annular cavity and the return air annular cavity are of rectangular annular structure.

[0015] Further, two return air pipes are arranged on each side of the return air annular cavity, and fresh air inlets of two air inlet channels are opened on each side.

[0016] Second aspect:

[0017] Provided is an operating room heating, ventilation and air conditioning duct system, comprising

[0018] a laminar flow hood, a plurality of return air boxes and an air conditioning unit;

[0019] the laminar flow hood adopts the laminar flow hood described above;

[0020] each return air box is in pipeline connection with the corresponding return air pipe on the nearby side of the laminar flow hood;

[0021] an air inlet of the air conditioning unit is in pipeline connection with the return air pipe on the nearby side of the laminar flow hood, and an air outlet of the air conditioning unit is in pipeline connection with the fresh air inlet of the air inlet channel on the nearby side of the laminar flow hood;

[0022] the return air pipes and fresh air inlets of the air inlet channels that do not participate in pipeline connection are sealed by sealing covers.

[0023] The beneficial effects of the present invention are:

[0024] The present invention provides a laminar flow hood and an operating room heating, ventilation and air conditioning duct system. By additionally arranging the air inlet annular cavity and the return air annular cavity in the laminar flow hood, the air duct system is optimally integrated in the internal space of the laminar flow hood, air duct interfaces can be freely selected, and the arrangement of air ducts on the top of the operating room is also simplified.

[0025] In the laminar flow hood, the return air annular cavity surrounds the air inlet annular cavity, and adjacent cavities are staggered, which enhances the heat exchange between return air and inlet air, realizes heat recovery to a certain extent, reduces the pressure of the air conditioning system, and is more energy-saving.

[0026] The structural modules of the laminar flow hood can be formed independently, transported independently and quickly assembled on the project site.

[0027] The operating room HVAC duct system of the present invention can realize the construction of operating room air ducts more quickly and flexibly, without the need to separately equip HVAC metal processing personnel and equipment, and without the need to separately manufacture traditional sheet metal air ducts. Attached Figure Description

[0028] The invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 and Figure 2 This is a schematic diagram of the laminar flow hood of the present invention;

[0030] Figure 3 This is a schematic diagram of the filter cavity and return air annular cavity in the laminar flow hood of the present invention;

[0031] Figure 4 This is a schematic diagram of the filter cavity in the laminar flow hood of the present invention;

[0032] Figure 5 This is a top view of the laminar flow hood of the present invention;

[0033] Figure 6 This is a half-sectional view of the laminar flow hood of the present invention;

[0034] Figure 7 This is a schematic diagram of the operating room heating and ventilation duct system of the present invention;

[0035] Figure 8 This is a schematic diagram of an operating room with a heating, ventilation, and air conditioning (HVAC) system.

[0036] in,

[0037] 2. Filter chamber; 21. Filter sub-chamber; 22. Filter element; 23. Filter air inlet;

[0038] 3. Air inlet annular cavity; 31. Air inlet channel;

[0039] 4. Return air annular cavity; 41. Return air duct;

[0040] 51. First external pipe; 52. Second external pipe; 53. Third external pipe;

[0041] 61. Operating room walls; 62. Operating room ceiling;

[0042] 7. Return air box; 8. Air conditioning unit. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] This application provides a laminar flow hood and an operating room HVAC duct system, which are described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0045] To address the technical problem of complex external piping in existing laminar flow hoods, where only an air inlet is provided, requiring multiple ducts to connect the air inlet and outlet of the air conditioning unit 8 to the return air box 7 in the operating room and the fresh air inlet of the laminar flow hood, an embodiment of this application provides a laminar flow hood. This will be described in detail below.

[0046] like Figures 1 to 6 As shown, a laminar flow hood includes

[0047] The housing has a filter chamber 2, an air inlet ring chamber 3, and an air return ring chamber 4 inside it;

[0048] The return air ring cavity 4 surrounds the air inlet ring cavity 3, the air inlet ring cavity 3 surrounds the filter cavity 2, and the filter element 22 is installed in the filter cavity 2;

[0049] The filter chamber 2 has filter air inlets 23 around its perimeter and filter air outlet at its bottom. The filter chamber 2 is connected to the air inlet ring chamber 3 through the filter air inlets 23 around its perimeter. The air inlet ring chamber 3 is provided with air inlet channels 31 around its perimeter, and each air inlet channel 31 passes through the return air ring chamber 4.

[0050] Return air pipes 41 are provided around the return air annular cavity 4, and each return air pipe 41 is connected to the return air annular cavity 4.

[0051] In this embodiment, the housing is constructed using sheet metal connections. The housing is formed through sheet metal assembly, and within the housing are formed a filter chamber 2, an air inlet ring chamber 3, and a return air ring chamber 4. The connections must ensure the airtightness of the joints to ensure the airtightness of the filter chamber 2, the air inlet ring chamber 3, and the return air ring chamber 4. In particular, it is necessary to prevent communication between the air inlet ring chamber 3 and the return air ring chamber 4, which would cause the airflow in the return air ring chamber 4 to contaminate the fresh air in the air inlet ring chamber 3.

[0052] Specifically, as an optional implementation method in this embodiment, such as Figure 4 Figure 6 As shown, the filter cavity 2 is divided into a plurality of filter sub-cavities 21, a filter element 22 is installed in each filter sub-cavity 21, and the air inlet side chambers of each filter sub-cavity 21 are communicated with each other, so that the air flow conveyed from the air inlet annular cavity 3 into the filter cavity 2 can enter each filter sub-cavity 21.

[0053] As Figure 6 , a sheet metal part is arranged between adjacent filter sub-cavities 21, the sheet metal part is used for separating the filter elements 22 in adjacent filter sub-cavities 21, but the upper end of the sheet metal part does not separate the adjacent filter sub-cavities 21, and the air inlet sides of each filter sub-cavity 21 are communicated with each other, so that after fresh air in the air inlet annular cavity 3 enters the filter cavity 2, the fresh air can be directly distributed to the air inlet side of each filter sub-cavity 21, then filtered by each filter element 22, and finally enters the operating room from the lower part of the filter cavity 2.

[0054] In this embodiment, the filter cavity 2 is divided into a plurality of filter sub-cavities 21, which is convenient for later staff to replace the filter element 22.

[0055] Specifically, as an alternative implementation in this embodiment, such as Figures 1 to 6 As shown, the number of the filter sub-cavities 21 is four, and the four filter sub-cavities 21 form a "field"-shaped structure.

[0056] Each filter sub-cavity 21 is provided with two filter air inlets 23, and the filter air outlet is provided at the bottom.

[0057] Specifically, both the air inlet annular cavity 3 and the return air annular cavity 4 are rectangular annular structures.

[0058] The air inlet annular cavity 3 is located between the return air annular cavity 4 and the filter cavity 2, and the laminar flow hood has a overall rectangular parallelepiped structure.

[0059] Specifically, two return air pipes 41 are arranged on each side of the rectangular annular return air annular cavity 4, and fresh air inlets of two air inlet channels 31 are opened.

[0060] In this embodiment, the return air pipe 41 is a round pipe, and the air inlet channel 31 is a rectangular channel.

[0061] Sealing is maintained between the return air annular cavity 4 on the outer periphery of the laminar flow hood and the middle air inlet annular cavity 3, the air inlet channel 31 of the air inlet annular cavity 3 is constructed in the return air annular cavity 4 by sheet metal, and a fresh air inlet is formed on the side of the return air annular cavity 4.

[0062] In this embodiment, both the filter elements 22 and the installation structure of the filter elements 22 in the filter sub-cavities 21 are prior art, for details, reference may be made to the previously filed patent with patent No. 201921014323.0 and the patent name is Buckle-type luminous laminar flow hood for operating rooms.

[0063] By adding an air inlet ring cavity 3 and an air return ring cavity 4 in the laminar flow hood, the air duct system is optimized and integrated within the laminar flow hood, the air duct interface can be freely selected, and the layout of the air ducts on the top of the operating room is also simplified.

[0064] The return air annular cavity 4 inside the laminar flow hood surrounds the inlet air annular cavity 3. The adjacent and staggered cavities enhance the heat exchange between the return air and the inlet air, achieve a certain degree of heat recovery, reduce the pressure on the air conditioning system, and save energy.

[0065] To reduce heat loss, thermal insulation layers are pre-applied to the return air ring cavity and the outer perimeter of the laminar flow box.

[0066] Another embodiment of this application provides a heating, ventilation, and air conditioning (HVAC) duct system for an operating room. This is described in detail below.

[0067] like Figure 7 Figure 8 An operating room heating, ventilation and air conditioning (HVAC) duct system, including

[0068] Laminar flow hood, eight return air boxes 7 and one air conditioning unit 8;

[0069] The laminar flow hood is the laminar flow hood of the above embodiment; the laminar flow hood is installed on the operating room ceiling 62;

[0070] Four return air boxes 7 are installed on the left side and four return air boxes 7 are installed on the right side of the operating room wall 61. The air conditioning unit 8 is installed on the rear side of the operating room wall 61, and an automatic sliding door is installed on the front side of the operating room.

[0071] When the return air box 7 is connected to the laminar flow hood, the two return air boxes 7 are connected to the return air pipe 41 on the nearest side of the laminar flow hood through the first external pipe 51; the first external pipe 51 is a two-in-one pipe.

[0072] The air inlet of the air conditioning unit 8 is connected to the return air duct 41 behind the laminar flow hood via a second external duct 52, and the air inlet of the air conditioning unit 8 is connected to the fresh air inlet behind the laminar flow hood via a third external duct 53.

[0073] The return air duct 41 and the fresh air inlet of the air intake duct 31, which are not involved in the pipeline connection, are sealed with caps.

[0074] Each operating room is equipped with an air conditioning unit 8. The air conditioning unit 8 is installed on one side of the operating room according to the actual site requirements. At this time, the air inlet and air outlet of the air conditioning unit 8 only need to be connected to the return air duct 41 and fresh air inlet on the same side of the laminar flow hood. The return air boxes 7 in various locations in the other operating rooms are connected to the nearest return air duct 41 around the laminar flow hood through separate pipes.

[0075] When the operating room HVAC duct system is in operation, the airflow in the operating room is drawn in from each return air box 7, then enters the return air ring cavity 4 of the laminar flow hood, and finally enters the air conditioning unit 8.

[0076] After the air conditioning unit 8 cools or heats the airflow, it outputs the airflow directly into the air inlet ring cavity 3 of the laminar flow hood through the pipe. The airflow in the air inlet ring cavity 3 can exchange heat with the airflow in the return air ring cavity 4, thereby reducing the pressure of the air conditioning unit 8. The airflow in the air inlet ring cavity 3 then enters the filter cavity 2, and is filtered from top to bottom through the filter element 22 in each filter sub-cavity 21 before entering the operating room.

[0077] The laminar flow hood, return air box 7, and air conditioning unit 8 in the operating room HVAC duct system are all modularized and can be transported to the operating room construction site for direct assembly on site. In particular, after the laminar flow hood is installed on the top of the operating room, the ducts can be configured for connection only by the actual location of the air conditioning unit 8 and the number of return air boxes 7 in the operating room.

[0078] All the devices (parts whose specific structures are not specified) selected in this application are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0079] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0080] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0081] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0082] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0083] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0084] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A laminar flow hood, characterized in that, comprising a shell, wherein a filtering chamber (2), an air inlet annular chamber (3) and a return air annular chamber (4) are defined in the shell; the return air annular chamber (4) surrounds the air inlet annular chamber (3), the air inlet annular chamber (3) surrounds the filtering chamber (2), and a filter element (22) is installed in the filtering chamber (2); filtering air inlets (23) are formed around the filtering chamber (2), a filtering air outlet is formed at the bottom of the filtering chamber (2), the filtering chamber (2) communicates with the air inlet annular chamber (3) through the filtering air inlets (23) around the filtering chamber, air inlet channels (31) are arranged around the air inlet annular chamber (3), and each air inlet channel (31) passes through the return air annular chamber (4); return air pipes (41) are arranged around the return air annular chamber (4), and each return air pipe (41) communicates with the return air annular chamber (4); the filtering chamber (2) is divided into a plurality of filtering sub-chambers (21), a filter element (22) is installed in each filtering sub-chamber (21), and air inlet side cavities of all the filtering sub-chambers (21) communicate with each other, so that air flow conveyed from the air inlet annular chamber (3) into the filtering chamber (2) enters all the filtering sub-chambers (21); the number of the filtering sub-chambers (21) is four, and the four filtering sub-chambers (21) form a "field"-shaped structure.

2. The laminar flow hood according to claim 1, characterized in that, both the air inlet annular chamber (3) and the return air annular chamber (4) are rectangular annular structures.

3. The laminar flow hood according to claim 2, characterized in that, two return air pipes (41) are arranged on each side of the return air annular chamber (4), and fresh air inlets for two air inlet channels (31) are formed on each side of the return air annular chamber (4).

4. An operating room heating, ventilation, and air conditioning (HVAC) duct system, characterized in that, comprising the laminar flow hood, a plurality of return air boxes (7) and an air conditioning unit (8); the laminar flow hood is the laminar flow hood according to claim 3; each return air box (7) is in pipeline connection with each return air pipe (41) on the adjacent side of the laminar flow hood respectively; an air inlet of the air conditioning unit (8) is in pipeline connection with the return air pipe (41) on the adjacent side of the laminar flow hood, and an air outlet of the air conditioning unit (8) is in pipeline connection with the fresh air inlet of the air inlet channel (31) on the adjacent side of the laminar flow hood; the remaining return air pipes (41) not participating in pipeline connection and the fresh air inlets of the air inlet channels (31) are sealed by sealing covers.

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