Air treatment system

Abstract

To provide an air treatment system which can enhance a cleaning effect of air in an indoor space.SOLUTION: An air treatment system 10 comprises a blowout port part 33, a blow-in port part 61 and a wind direction change part. The blowout port part 33 has a blowout port 46 which is arranged at a ceiling face side of an indoor space 11, and blows out air to the indoor space 11. The blow-in port part 61 has a blow-in port 71 which is arranged at a side face side of the indoor space 11, and sucks air from the indoor space 11. The wind direction change part changes an orientation of the blowout port 46 by moving the blowout port part 33 to the indoor space 11, and changes an orientation of the blow-in port 71 by moving the blow-in port part 61 to the indoor space 11.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an air handling system for supplying and exhausting air to and from an indoor space. [Background technology]

[0002] Conventionally, as disclosed in Patent Document 1, for example, there has been known an air treatment system that purifies the air in an indoor space by blowing air out from an air outlet provided on the ceiling surface of the indoor space directly below the indoor space and sucking in the air in the indoor space from an air inlet provided on the side of the indoor space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3177832 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned air treatment system, an air outlet is provided on the ceiling surface of the indoor space and an air inlet is provided on the side surface of the indoor space, with the directions of the air outlet and the air inlet being approximately perpendicular to each other. However, even with such a structure, it is desirable to enhance the air purification effect in the indoor space.

[0005] An object of the present invention is to provide an air treatment system capable of improving the effect of cleaning air in an indoor space. [Means for solving the problem]

[0006] The air treatment system of the present invention comprises an air outlet section arranged on the ceiling side of an indoor space and having an air outlet for blowing air into the indoor space, an air inlet section arranged on the side side of the indoor space and having an air inlet for drawing air from the indoor space, and an air direction changing section that moves at least one of the air outlet section and the air inlet section relative to the indoor space to change the direction of at least one of the air outlet section and the air inlet section. Effect of the Invention

[0007] According to the present invention, it is possible to provide an air processing system that enables control of the push-pull airflow between the air outlet and the air inlet, thereby improving the effect of cleaning the air in the indoor space. [Brief description of the drawings]

[0008] [Figure 1] 1 is a front view of an air treatment system according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a side view of the air treatment system. [Diagram 3] FIG. 2 is a front view of the air treatment system according to the embodiment, in which the directions of the air outlet and the air inlet are changed. [Figure 4] 2 is a schematic cross-sectional view showing a blow-out air direction changing section and an inlet air direction changing section of the air processing system according to the embodiment of the present invention; [Diagram 5] 1A is a perspective view of a fan filter unit of the air treatment system with the air outlet facing downward, and FIG. 1B is a perspective view of the air outlet facing diagonally downward. [Figure 6] 1A is a perspective view of the duct panel of the air treatment system with the suction port facing horizontally, and FIG. 1B is a perspective view of the suction port facing diagonally upward. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0010] 1 to 4 show an air treatment system 10. The air treatment system 10 keeps the air clean in an indoor space 11 of a chemotherapy room, which is a treatment room in a medical institution. For example, during chemotherapy in which an anticancer drug is administered to a patient 13 sitting in a chemotherapy chair 12 arranged in the indoor space 11, the air treatment system 10 is used to capture and remove suspended matter such as particles and dust containing drug components that are dispersed into the air from the patient 13, thereby reducing exposure of medical personnel and the like other than the patient 13 to the drug. The air treatment system 10 can be applied not only to chemotherapy rooms, but also to operating rooms, sterile rooms, bacteriological testing rooms, pathology rooms, ICU rooms, culture rooms, and the like.

[0011] The air treatment system 10 includes a fan filter unit 20 installed on the ceiling surface side of the indoor space 11, a duct panel 21 installed on a wall surface that is a side surface of the indoor space 11, and a connecting duct 22 that connects the fan filter unit 20 and the duct panel 21 on the ceiling surface side of the indoor space 11. The fan filter unit 20, the duct panel 21, and the connecting duct 22 form an air circulation path 23 that circulates air in the indoor space 11. An air conditioner (cooler, heater, humidifier, dehumidifier, etc.) may also be installed between the fan filter unit 20 and the duct panel 21.

[0012] A ceiling board 25 is installed on the ceiling surface side of the indoor space 11, separating the indoor space 11 from the attic space 24. The fan filter unit 20 is installed embedded in an embedded opening 26 formed in the ceiling board 25, and the upper side of the duct panel 21 penetrates the ceiling board 25 and is placed in the attic space 24, and the fan filter unit 20 and the duct panel 21 are connected to each other in the attic space 24 by a connecting duct 22.

[0013] 1 to 5 show the fan filter unit 20. The fan filter unit 20 includes a housing 30, a fan 31, an air processing section 32, an air outlet section 33, an air outlet duct 34, and an air outlet direction changing section (air outlet direction changing unit) 35 which is an air direction changing section.

[0014] The housing 30 is thin in the vertical direction and has a rectangular parallelepiped shape with one opposing side longer than the other opposing side when viewed from below or above. Inside the housing 30, a fan chamber 37 in which the fan 31 is housed, an airflow chamber 38 on the side of the fan chamber 37, and an outlet chamber 39 below the airflow chamber 38 are each partitioned and formed. The fan chamber 37 is formed on one end side of the longitudinal direction of the housing 30, and the airflow chamber 38 and the outlet chamber 39 are arranged above and below and formed on the other end side of the longitudinal direction of the housing 30 than the fan chamber 37. The airflow chamber 38 and the outlet chamber 39 are formed in a central region inside both side surfaces in the short direction intersecting the longitudinal direction of the housing 30. One end surface of the housing 30 facing the duct panel 21 is provided with a plurality of duct connection ports 40 that communicate with the fan chamber 37 and to which the connection duct 22 is connected. An opening 41 that communicates with the lower side of the blow-out chamber 39 is provided on the lower surface of the housing 30, and the blow-out port portion 33 and the blow-out port duct 34 are arranged in this opening 41.

[0015] The fan 31 is, for example, a centrifugal fan equipped with an impeller and a motor for rotating the impeller. The fan 31 draws air into the fan chamber 37 through a duct connection port 40 and sends the drawn air into the blower chamber 38.

[0016] The air treatment section 32 uses a filter 43 that captures and removes dust and particles in the air. For example, a HEPA filter (High Efficiency Particulate Air Filter) that captures particles of 0.3 μm or more in the air is used as the filter 43. The filter 43 is disposed so as to cover a communication opening that communicates the blowing chamber 38 and the blowing chamber 39, and filters the air sent from the blowing chamber 38 to the blowing chamber 39.

[0017] The air outlet section 33 includes an air outlet frame 45 capable of closing the opening 41 on the bottom surface of the housing 30, and an air outlet 46 provided in the center of the air outlet frame 45. The air outlet section 33 is attached to the housing 30 by an air outlet section support shaft 47, which is a horizontal shaft with one side on one end side facing the duct panel 21, and is supported so as to be swingable (angle adjustable) in the vertical direction with the air outlet section support shaft 47 as a fulcrum. A straightening frame 48 that straightens the air to be blown out is disposed in the air outlet 46. The straightening frame 48 is configured with a plurality of straightening plates arranged in a lattice pattern, and straightens the air so that it is blown out in a direction perpendicular to the air outlet 46.

[0018] The air outlet duct 34 movably connects the air outlet section 33 in an airtight state to the air outlet chamber 39, which is an air flow path 49 for blowing air, and uses a cylindrical, expandable bellows duct 50. The upper end side of the bellows duct 50 is airtightly attached to a mounting frame 51 provided around the opening 41 in the air outlet chamber 39, while the lower end side of the bellows duct 50 is airtightly attached to the periphery of the air outlet 46 on the upper surface side of the air outlet frame 45. The air outlet duct 34 (bellows duct 50) expands and contracts in conjunction with the movement (swing) of the air outlet section 33, and connects the air outlet 46 to the air flow path 49 regardless of the movement position (swing position) of the air outlet section 33, and guides the air that has passed through the filter 43 to the air outlet 46 to be blown out.

[0019] In addition, the air outlet duct 34 is not limited to the bellows duct 50, but may be configured, for example, as a plurality of fan-shaped duct frames of slightly different sizes assembled around the air outlet section support axis 47, with the multiple fan-shaped duct frames expanding and contracting in conjunction with the movement of the air outlet section 33.

[0020] As shown in FIG. 4, the airflow direction changing section 35 includes an air outlet section support shaft 47 that supports one end side of the air outlet section 33 so that it can swing relative to the housing 30, a drive section 53 that is installed within the housing 30 and swings the air outlet section 33, and a link 54 that links the drive section 53 and the air outlet section 33.

[0021] The driving unit 53 is disposed above the opening 41 of the housing 30 on both inner surfaces intersecting with one end side where the air outlet shaft 47 is disposed (see FIG. 2). The driving unit 53 is disposed approximately parallel to the opening 41 of the housing 30, and has a long cylinder unit 55 with a ball screw rotatably built in, a motor 56 capable of forward and reverse rotation for driving and rotating the ball screw in the cylinder unit 55, and a moving unit 57 that moves along the longitudinal direction of the cylinder unit 55 via a screw member that screws into the ball screw. One end of a link 54 is rotatably connected to the moving unit 57 of the driving unit 53, and the other end of the link 54 is rotatably connected to a connecting unit 58 erected on the other end side opposite the air outlet shaft 47 on the back side of the air outlet unit 33. When the movable part 57 of the drive unit 53 moves to one end side (right side in Figure 4), the air outlet section 33 swings toward the opening 41 of the housing 30, and when the movable part 57 of the drive unit 53 moves to the other end side (left side in Figure 4), the air outlet section 33 swings so as to advance toward the indoor space 11 below.

[0022] 1 to 4 and 6 show duct panel 21. Duct panel 21 includes a housing 60, an air inlet portion 61, an air inlet duct 62, and an air inlet direction changing portion (air inlet direction changing unit) 63 which is an air direction changing portion.

[0023] The housing 60 is formed in a hollow duct structure with a small depth dimension and a long vertical direction, and is arranged, for example, along the wall surface of the indoor space 11, and the upper side penetrates the ceiling board 25 and is arranged in the attic space 24. Two openings 66 are provided at different height positions in the vertical direction on the side surface of the lower side of the housing 60 arranged in the indoor space 11, and an intake port 61 and an intake duct 62 are respectively arranged in each opening 66. Note that the openings 66, the intake port 61 and the intake duct 62 may be provided at three or more different height positions. A plurality of duct connection ports 67 that communicate with the inside of the housing 60 and are connected to the connection duct 22 are provided on the side surface of the upper side of the housing 60 arranged in the attic space 24.

[0024] The suction port 61 includes an suction port frame 70 capable of closing the opening 66 on the side of the housing 60, and an suction port 71 provided in the center of the suction port frame 70. The suction port 61 is attached to the housing 60 by an suction port support shaft 72, an axis whose upper side is horizontal, and is supported so as to be swingable (angle adjustable) in the vertical direction about the suction port support shaft 72. A pre-filter 73 that captures and removes dust in the sucked air is detachably disposed in the suction port 71.

[0025] The suction port duct 62 connects the suction port 61 to the suction path 59 inside the housing 60 in an airtight manner so as to be movable, and a cylindrical, expandable bellows duct 75 is used. One end of the bellows duct 75 is airtightly attached to a mounting frame 76 provided around the opening 66 inside the housing 60, while the other end of the bellows duct 75 is airtightly attached to the periphery of the suction port 71 on the back side of the suction port frame 70. The suction port duct 62 expands and contracts in conjunction with the movement (swing) of the suction port 61, and connects the suction port 71 to the suction path 59 regardless of the movement position (swing position) of the suction port 61, and causes air to be sucked from the suction port 71 into the housing 60. The suction port duct 62 is not limited to the bellows duct 75, and may be, for example, a fan-shaped duct frame centered on the suction port support shaft 72.

[0026] As shown in Figure 4, the suction air direction change section 63 includes an suction port support shaft 72 that supports the upper end side of the suction port 61 so that it can swing relative to the housing 60, a drive section 78 that is installed within the housing 60 and swings the suction port 61, and a link 79 that links the drive section 78 and the suction port 61.

[0027] The driving unit 78 is disposed on both inner surfaces of the opening 66 of the housing 60, intersecting with the upper end side where the suction port portion support shaft 72 is disposed. The driving unit 78 is disposed substantially parallel to the opening 66 of the housing 60, and has a long cylinder portion 80 with a ball screw rotatably built in, a motor 81 capable of forward and reverse rotation for driving and rotating the ball screw in the cylinder portion 80, and a moving portion 82 that moves along the longitudinal direction of the cylinder portion 80 via a screw member that screws into the ball screw. One end of a link 79 is rotatably connected to the moving portion 82 of the driving unit 78, and the other end of the link 79 is rotatably connected to a connecting portion 83 erected on the lower end side opposite the suction port portion support shaft 72 on the back side of the suction port portion 61. As the moving part 82 of the drive unit 78 moves downward, the suction port part 61 swings toward the opening 66 of the housing 60, while as the moving part 82 of the drive unit 78 moves upward, the suction port part 61 swings so as to advance toward the indoor space 11.

[0028] The air processing system 10 also includes a system operation unit (not shown) that controls on / off of the fan 31 and the orientation of the air outlet 46 and the air inlet 71 (forward and reverse rotation of the motors 56, 81 of the drive units 53, 78).

[0029] Furthermore, the position (at least the position of the head) of the patient 13 sitting in the chemotherapy chair 12 in the indoor space 11 is between the air outlet 46 of the fan filter unit 20 and the air inlet 71 of the duct panel 21 in the horizontal direction, and is lower than the air outlet 46 of the fan filter unit 20 and higher than at least the lower air inlet 71 of the duct panel 21 in the vertical direction. In other words, the air outlet 46 of the fan filter unit 20 and the air inlet 71 of the duct panel 21 are disposed at positions that allow them to face each other with at least the head of the patient 13 sitting in the chemotherapy chair 12 between them.

[0030] Furthermore, the patient 13 sitting in the chemotherapy chair 12 is oriented so that the face of the patient 13 faces away from the duct panel 21 and can face the air outlet 46 .

[0031] The operation of the air treatment system 10 will now be described.

[0032] 1, 2, 5(a) and 6(a), before and after the start and completion of chemotherapy, or when chemotherapy is not in progress, the air outlet section 33 can be moved into the opening 41 of the housing 30 to be stored, and the air inlet section 61 can be moved into the opening 66 of the housing 60 to be stored. In this stored state, the air outlet section 33 and the air inlet section 61 do not protrude into the indoor space 11, preventing the patient 13, medical staff, etc. from bumping into the air outlet section 33 and the air inlet section 61 or interfering with their movement or work.

[0033] Also, as shown in Figures 3, 5(b) and 6(b), when a patient 13 sits in the chemotherapy chair 12 and undergoes chemotherapy, the directions of the air outlet 46 and the air inlet 71 are changed to enhance the effect of the push-pull airflow.

[0034] The outlet section 33 is swung by the outlet direction changing section 35 so as to project downward into the indoor space 11 with the outlet section support shaft 47 as a fulcrum, and the direction of the outlet 46 is changed to face the patient 13 sitting in the chemotherapy chair 12 and the intake port 71. At this time, the bellows duct 50 extends, and the outlet section 33 is swung while maintaining the airtight connection between the outlet chamber 39 and the outlet 46.

[0035] The suction air direction changing unit 63 swings the suction port 61 so that it protrudes into the indoor space 11 with the suction port support shaft 72 as a fulcrum, and the direction of the suction port 71 is changed to face the patient 13 sitting in the chemotherapy chair 12 or the air outlet 46. At this time, the bellows duct 75 extends, and the suction port 61 swings while maintaining an airtight connection between the inside of the housing 60 and the suction port 71. The swing angles of the upper and lower suction port parts 61 located at different heights may be the same or different. For example, the swing angle of the lower suction port part 61 may be large and the swing angle of the upper suction port part 61 may be small so as to face the air outlet 46.

[0036] Then, by the operation of the fan 31, air sucked in by the fan 31 is sent from the blowing chamber 38 through the filter 43 to the blowing chamber 39, and is blown out from the blowing chamber 39 and the inside of the bellows duct 50 into the indoor space 11 through the air outlet 46. The air in the indoor space 11 is sucked into the housing 60 of the duct panel 21 through the suction port 71 and the inside of the bellows duct 75, and is sucked into the fan 31 through the inside of the housing 60 and the connecting duct 22.

[0037] A push airflow P1 is generated when air is blown out from the air outlet 46 into the indoor space 11, and a pull airflow P2 is generated when air in the indoor space 11 is sucked into the air inlet 71, generating a push-pull airflow between the air outlet 46 and the air inlet 71.

[0038] During chemotherapy, particles and dust containing drug components dispersed into the air by a patient 13 undergoing chemotherapy seated in a chemotherapy chair 12 are captured by a push airflow P1 from the air outlet 46, and are sucked into the air inlet 71 by a pull airflow P2 to the air inlet 71, and are removed from the indoor space 11. The particles and dust sucked into the air inlet 71 flow through the air circulation path 23 and are captured by the filter 43. Therefore, air purified by the filter 43 is blown out from the air outlet 46.

[0039] The air outlet section 33 is swung so as to protrude into the indoor space 11 below, with the air outlet section support axis 47 as a fulcrum, and the orientation of the air outlet 46 is changed to face the patient 13 sitting in the chemotherapy chair 12 and the intake port 71, and the intake port section 61 is swung so as to protrude into the indoor space 11, with the intake port support axis 72 as a fulcrum, and the orientation of the intake port 71 is changed to face the patient 13 sitting in the chemotherapy chair 12 and the air outlet 46. As a result, the push-pull airflow between the air outlet 46 and the intake port 71 is controlled to be an approximately straight line or a flow close to a straight line, thereby enhancing the effectiveness of the push-pull airflow in capturing particles, dust, etc. in the air.

[0040] In this way, in the air treatment system 10, the direction of the air outlet 46 is changed by moving the air outlet section 33 relative to the indoor space 11, and the direction of the air inlet 71 is changed by moving the air inlet section 61, so that the push-pull airflow between the air outlet 46 and the air inlet 71 can be controlled, thereby enhancing the air purification effect in the indoor space 11.

[0041] Since the air outlet section 33 is movably connected to the air outlet chamber 39 which is the air blowing path 49 through which air is blown by the air outlet duct 34, air can be blown out from the air outlet 46 even if the air outlet section 33 is moved. Similarly, the air inlet section 61 is movably connected to the inside of the housing 60 which is the air intake path 59 through which air is sucked by the air inlet duct 62, so air can be sucked in from the air inlet 71 even if the air inlet section 61 is moved.

[0042] By using expandable bellows ducts 50, 75 as the air outlet duct 34 and the air inlet duct 62, the air outlet section 33 and the air inlet section 61 can be moved while maintaining airtightness between the air outlet chamber 39 and the air outlet section 33, which is the air supply path 49, and between the inside of the housing 60 and the air inlet section 61, which is the air inlet path 59.

[0043] In addition, the side of the air outlet section 33 located on the air inlet section 61 side is supported so that it can swing by the air outlet section support shaft 47, and as the air outlet section 33 swings toward the indoor space 11 around this air outlet section support shaft 47, the orientation of the air outlet 46 is changed to face the air inlet 71. In addition, the upper side of the air inlet section 61 is supported so that it can swing by the air inlet section support shaft 72, and as the air inlet section 61 swings toward the indoor space 11 around this air inlet section support shaft 72, the orientation of the air inlet 71 is changed to face the air outlet 46. As a result, a push-pull airflow that is approximately linear or close to a linear line between the air outlet 46 and the air inlet 71 can be controlled.

[0044] Furthermore, since multiple suction inlets 61 are provided at different height positions, air can be sucked in over a wide range in the height direction, and the protruding dimension into indoor space 11 can be made smaller than in the case where there is only one.

[0045] The air treatment system 10 can also be used when chemotherapy is performed using a bed instead of the chemotherapy chair 12. In this case, the directions of the air outlet 46 and the air inlet 71 can be changed according to the position of the patient 13 lying on the bed, and the push-pull airflow between the air outlet 46 and the air inlet 71 can be controlled.

[0046] Furthermore, the air treatment system 10 may be combined with a temperature-adjustable air conditioning unit so that at least temperature-adjusted air is blown out from the air outlet 46. In this case, the push-pull airflow can be controlled as described above, thereby improving the air conditioning effect and energy saving.

[0047] Furthermore, the movement of the air outlet section 33 by the air outlet direction changing section 35 is not limited to swinging about the air outlet section support shaft 47, and may be, for example, moved vertically in the indoor space 11 relative to the fan filter unit 20, so as to change the direction of the air outlet 46 at any height position. Similarly, the movement of the air inlet section 61 by the air inlet direction changing section 63 is not limited to swinging about the air inlet section support shaft 72, and may be, for example, moved so as to protrude from the duct panel 21 into the indoor space 11, so as to change the direction of the air inlet 71 at any protruding position.

[0048] In addition, the push-pull airflow can be easily controlled appropriately by changing the airflow direction by moving both the air outlet section 33 and the air inlet section 61 using the air direction change sections 35, 63, respectively, but it is also possible to change the airflow direction by moving only one of the air outlet section 33 and the air inlet section 61, and in this case too, the push-pull airflow can be controlled.

[0049] Although the embodiment of the present invention and its modified examples have been described above, various combinations of configurations, partial omissions, substitutions and modifications are also possible. [Explanation of symbols]

[0050] 10 Air handling systems 11 Indoor space 33 Air outlet section 34 Air outlet duct 35 Airflow direction changing unit, which is an airflow direction changing unit 46 Air outlet 47 Air outlet support shaft 49 Air flow path 59 Suction route 61 Intake port 62 Intake duct 63 Airflow direction changing section, which is an airflow direction changing section 71 Intake port 72 Suction port support shaft

Claims

1. An air outlet unit is disposed on a ceiling surface side of the indoor space and has an air outlet for blowing air into the indoor space; an intake port portion disposed on a side surface of the indoor space and having an intake port for drawing air from the indoor space; an airflow direction changing unit that changes a direction of at least one of the air outlet and the air inlet by moving at least one of the air outlet and the air inlet with respect to the indoor space; 1. An air treatment system comprising:

2. an air outlet duct that expands and contracts in conjunction with the movement of the air outlet section by the air direction changing section and connects the air outlet to an air blowing path for blowing air; 2. The air treatment system of claim 1.

3. an air inlet duct that expands and contracts in conjunction with the movement of the air inlet by the air direction changing unit and connects the air inlet to an air inlet path that draws in air; 2. The air treatment system of claim 1.

4. The airflow direction changing unit has an air outlet section support shaft that swingably supports a side of the air outlet section that faces the side of the indoor space where the air inlet section is arranged, and changes the direction of the air outlet to face the air inlet section by swinging the air outlet section toward the indoor space with the air outlet section support shaft as a fulcrum.

2. The air treatment system of claim 1.

5. The airflow direction changing unit has an air inlet portion support shaft that swingably supports an upper side of the air inlet portion, and the direction of the air inlet is changed to face the air outlet by swinging the air inlet portion toward the indoor space with the air inlet portion support shaft as a fulcrum.

2. The air treatment system of claim 1.

6. The suction inlets are provided at a plurality of different height positions.

6. An air treatment system according to any one of the preceding claims.

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