JP2005164147A - Air cleaning negative pressure forming device for infection control - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaning negative pressure forming device for infection control, requiring no work for an exhaust duct without invading an area in an infection control room. <P>SOLUTION: The device comprises a casing 12 having a partition part for partitioning the inside of the infection control room from the outside, mounted to be protruded to the outside and opened to the inside, a door 15 closably mounted in an opening portion of the casing 12, an air inlet 13 provided on the inside of the casing 12, an exhaust port 16 provided on the outside of the casing 12 for exhausting air downward from the casing 12, and a fan 17 provided in the casing 12 for sucking room air from the air inlet 13 and exhausting all or part of the sucked room air from the exhaust port 16 to the outside. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention, for example, negatively pressures and cleans infection control rooms such as hospital rooms and examination rooms to prevent air infection of airborne diseases such as tuberculosis and influenza, for example. It relates to the device.

  In order to prevent airborne infections such as tuberculosis and influenza, it is indispensable to negatively clean and clean infection control rooms such as hospital rooms and examination rooms.

  Conventionally, in hospitals where hospitalized infection patients (designated hospitals) are infectious disease rooms, filters, exhaust fans, exhaust ducts for negative pressure, and filters, circulation fans, and ventilation ducts for cleaning purposes By implementing it, negative pressure and cleaning were realized. In addition, work such as airtightness of the interior of the infectious disease room and separation from the existing air-conditioning system were necessary. This requires a great deal of cost and construction time.

  However, hospitals other than hospitals that infect patients with infectious diseases require facilities for temporarily isolating the patients, but it is not necessary to provide a complete infectious disease room as described above. Accordingly, floor pressure type and ceiling concealment type negative pressure / cleaning devices are becoming widespread, but also have the following problems.

  The floor-mounted negative pressure / cleaning device occupies the area of the hospital room, and is difficult to apply in rooms other than hospital rooms and examination rooms having a sufficient area. Also, exhaust duct work is required.

  Ceiling concealment type negative pressure / cleaning devices involve ceiling work and exhaust duct work, and there are problems in terms of cost and construction period.

There is Patent Document 1 as a conventional floor-standing negative pressure / cleaning device.
JP 2003-185204 A

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an infection countermeasure air cleaning negative pressure apparatus that does not occupy an area of an infection countermeasure room and does not require an exhaust duct work. .

  In order to achieve the above object, the infection-control air purifying negative pressure apparatus of the present invention is a casing that is attached to the interior of the infection-control room by projecting to the outside by opening a partition partitioning the interior and the exterior of the infection-control room. A door attached to the opening of the housing so as to be openable and closable; an air inlet provided on the indoor side of the housing; and an exhaust provided from the outside of the housing for exhausting air from within the housing. An exhaust member that discharges downward, and a fan that is provided in the housing and sucks indoor air from the air suction port, and discharges part or all of the sucked indoor air from the exhaust member to the outside. It is characterized by.

  Further, the present invention provides the infection-controlling air cleaning negative pressure device, wherein the air inside the housing is exhausted from the exhaust member to the outside of the housing, and the air from the outside is exhausted from the exhaust member to the inside of the housing. It is characterized by having a backflow prevention damper that prevents entry.

  Further, the present invention is characterized in that, in the air purification negative pressure increasing device for anti-infection, the upper surface of the outer part of the casing is formed with a single plate with a gradient.

  The present invention is also characterized in that, in the air purification negative pressure device for anti-infection, a heat insulating material is provided on the inner surface of the casing.

  The infection control air purifying negative pressure device of the present invention is provided with an infection control room such as a hospital room or a diagnosis room by opening a partition part with an outside such as a window or a wall. Exhaust duct work is not required because it does not occupy a large area and is exhausted directly outside the room.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

  1A is a top view showing an embodiment of the present invention, FIG. 1B is a side view, FIG. 1C is a front view, and FIG. 1D is a bottom view. (E) is the D section enlarged view of Drawing 1 (d).

  That is, the infection-cleaning air purifying negative pressure apparatus according to an embodiment of the present invention has an opening in a part of an aluminum sash window 11 that is a partitioning part that separates the room for infection prevention from the room inside the room, for example. A bottomed cylindrical casing 12 projects outside the window 11 and is attached to the opening of the window 11. In this case, the bracket 19 is installed on the outer wall surface, and the housing 12 is fixed to the bracket 19. A door 15 provided with an air inlet 13 having a pre-filter and an air outlet 14 is attached to the opening of the housing 12 so as to be freely opened and closed. An exhaust port 16 is provided as an exhaust member on the lower surface of the casing 12 outside the room. Inside the housing 12 is provided a fan 17 that sucks indoor air from the air inlet 13, blows air into the room from the air outlet 14, and discharges air from the exhaust outlet 16 to the outside. Inside the housing 12, for example, a main filter 18 such as a HEPA filter is provided between the fan 17 and the air inlet 13. Between the fan 17 and the air outlet 14 in the housing 12, there are provided an opening 20 through which a constant amount of air flows during both strong operation and weak operation, and a motor damper 21 that opens only during strong operation. A sound insulating plate 22 is provided between the main filter 18 and the fan 17 in the housing 12. An electrical component 23 is provided inside the housing 12, and an operation switch 24, a strong / weak operation switch 25, a buzzer reset switch 26, an operation lamp (red) 27, and a failure lamp (green) 28 are provided on the front surface of the door 15. A differential pressure gauge 29 for measuring and displaying the differential pressure between the upstream side and the downstream side of the main filter 18, and an operating hour meter 30 for measuring and displaying the operating time of the fan 17. Is provided with a wire hole 31.

  A backflow prevention damper 32 is provided near the exhaust port 16 in the housing 12, and the backflow prevention damper 32 exhausts the air in the housing 12 from the exhaust port 16 to the outside and allows air from the outside to flow out. This prevents the exhaust port 16 from entering the housing 12.

  The casing 12 is formed so that the upper surface of the outdoor part is inclined with a single plate.

  A heat insulating material may be provided on the inner surface of the housing 12.

Next, the operation of the infection control air purifying negative pressure device according to the embodiment of the present invention will be described. When the operation switch 24 is turned on and the fan 17 is driven, as shown by the arrow A, indoor contaminated air enters the housing 12 through the air suction port 13 and dust is collected by the prefilter provided in the air suction port 13. Etc. are removed. The air that has entered through the air suction port 13 is filtered and sterilized by the main filter 18, cleaned, and then flows around the sound insulating plate 22 into the fan 17. As indicated by arrow B, the clean air that has flowed into the fan 17 is blown into the room through the air outlet 14 and circulates through the air. In this case, as indicated by an arrow B _1, and the air flowing through openings 20 flowing Teikaze amount at the time of strong operation and weak operation, as indicated by the arrow B _2, there is air flowing through the motor-damping 21 to open only the strong operation. On the other hand, as shown by an arrow C, a part of the clean air that has flowed into the fan 17 is discharged from the exhaust port 16 downward to the outside of the room. Since a part of the indoor air is discharged outside the room, the negative pressure is generated in the room.

  The air flow can be switched by the strength / weakness operation changeover switch 25, and a strong operation is performed to prevent infection during treatment by a nurse, and a weak operation is performed at rest. In addition, a sound insulating plate 22 is installed to suppress room noise.

  By installing the main filter 18 in the vicinity of the air inlet 13, the risk of airborne microbe leakage is reduced. Further, the main filter 18 may be provided with antibacterial and sterilizing functions. Further, a UV lamp may be installed in the housing 12 for air sterilization.

  One fan 17 is used to ensure a desired air volume for air circulation and exhaust.

  The air outlet 14 is provided in the upper part and the air inlet 13 is provided in the lower part so that a short circuit does not occur between the air outlet 14 and the air inlet 13.

  In addition, an infrared remote device may be provided to operate various switches from a remote location such as a hospital entrance when entering or leaving the room.

  FIG. 2 is a plan layout view showing the vicinity of a hospital room according to the embodiment of the present invention. In the figure, 201 is a hospital room, 202 is a hospital room entrance door, 203 is an operation panel, 204 is an air supply duct, 205 is a corridor, 206 is a bed, 207 is an air purification negative pressure device for infection control, and 208 is an exhaust duct. . That is, a bed 206 is installed in the hospital room 201 and an air supply duct 204 is provided. The window of the hospital room 201 is provided with an anti-infection air-cleaning negative pressure device 207 protruding outside. A hospital room entrance door 202 is provided at the boundary between the hospital room 201 and the hallway 205. At the entrance / exit of the hospital room 201, an operation panel 203 for controlling the operation of the air purification negative pressure device 207 for infection control is provided. The operation panel 203 is used for the purpose of remotely controlling the operation of the infection control air purifying negative pressure device 207 when a nurse or the like enters or leaves the hospital room 201. Thereby, the infection before a treatment and at the time of a treatment can be prevented.

  In addition, instead of the operation panel, the opening / closing state of the hospital room door and the treatment status are detected by a limit switch provided on the door part, and when a nurse enters the room for treatment or during treatment, The fan of the anti-infection air purifying negative pressure device may be automatically operated strongly, and in other cases, the fan of the anti-infection air purifying negative pressure device may be operated weakly.

  In the embodiment of the present invention, a window, a wall, etc. of a hospital room, a doctor's office, etc. are opened, and a hospital room is provided with an air purification negative pressure control device for infection control on the outside of the room facing the hospital room, the doctor's room, etc. Since the examination room can be negatively pressured and cleaned, it does not occupy the room area of the hospital room or examination room. In addition, exhaust duct work is not necessary because the air can be directly exhausted from the air purification negative pressure device for infection control.

  In addition, since the anti-infective air purifier for infection control is installed protruding outside the room, as a countermeasure against wind and rain, the upper surface of the outdoor part is formed with a single plate without seams, screws, etc. and the exhaust port is Provided on the bottom surface. In addition, a backflow prevention damper is provided to prevent the outdoor air from flowing backward from the exhaust port when the wind is strong.

  In addition, since the anti-infection air cleaning negative pressure device is installed to protrude outside the room, so that the outdoor air temperature does not affect the indoor temperature, it is attached to the inner surface of the casing that constitutes the anti-infection air cleaning negative pressure device. A heat insulating material may be provided.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. For example, the exhaust member provided on the outdoor side of the casing is attached to the side surface of the outdoor casing in addition to the exhaust port on the lower surface of the outdoor casing and changes the air flow direction of the exhaust from the casing downward. As long as the exhaust from the inside of the housing can be discharged downward to the outdoor side, such as an airflow guide member, the form is not limited. In this case, the airflow guide member may be detachably provided on the side surface of the housing.

  In addition, the air inlet or air outlet provided on the indoor side of the housing is provided integrally with the door that can be freely opened and closed at the housing opening, and the door can be used to replace the pre-filter and main filter in the housing. If it has an opening shape that does not hinder the work, it can be provided integrally with the indoor casing other than the door.

  In the present invention, the air suction port is an essential component as means for keeping the infection control room such as a hospital room or a doctor's room at a negative pressure, but the air outlet is in accordance with the required specifications of the infection control room. It can be omitted. When the air outlet can be omitted, the fan serves to exhaust all the indoor air sucked from the air inlet through the exhaust member, while when the air outlet cannot be omitted, the fan A part of the indoor air sucked from the air suction port is discharged to the outside through the exhaust member. In the latter case, in addition to the fan, if an exhaust fan, a constant air volume device, or a member with an adjusted opening area or an adjustable member is provided in the exhaust flow path on the downstream side of the fan, a predetermined air volume can be obtained. It becomes possible to ensure the displacement.

  In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiment examples may be appropriately combined.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows one embodiment of this invention, (a) is a top view, (b) is a side view, (c) is a front view, (d) is a bottom view, (e) is (d). FIG. These are plane | planar arrangement | positioning figures which show the hospital room vicinity which concerns on the example of embodiment of this invention.

Explanation of symbols

12 Housing 13 Air inlet 14 Air outlet 15 Door 16 Exhaust outlet 17 Fan 18 Main filter 19 Bracket

Claims (4)

A housing that opens to the outside and is attached to the outside of the room by opening a partition that separates the room for infection control from the outside;
A door attached to the opening of the housing so as to be freely opened and closed;
An air inlet provided on the indoor side of the housing;
An exhaust member that is provided outside the casing and exhausts the exhaust from the casing downward;
A fan that is provided in the housing and sucks indoor air from the air suction port, and discharges part or all of the sucked indoor air to the outside from the exhaust member;
An air cleaning negative pressure device for infection control, comprising:   A backflow prevention damper is provided in the casing, and discharges air inside the casing from the exhaust member to the outside and prevents air from the outside from entering the casing from the exhaust member. Item 2. The air purifying negative pressure device for infection control according to Item 1.   The infection-preventing air purifying negative pressure apparatus according to claim 1 or 2, wherein the upper surface of the exterior part of the casing is formed with a single plate with a gradient.   The air purification negative pressure device for infection prevention according to claim 1, 2, or 3, wherein a heat insulating material is provided on the inner surface of the housing.

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