JP6009227B2 - Air conditioning system and air volume / end pressure adjustment method - Google Patents

Description

  The present invention relates to an air conditioning system that individually exhausts air from an apparatus that requires exhaust using an exhaust duct, and an air volume / end pressure that adjusts the air volume and terminal pressure of air exhausted from the apparatus that requires exhaust through the exhaust duct. It relates to the adjustment method. Furthermore, the present invention relates to an air conditioning system that individually supplies air to a device that needs air supply using an air supply duct, and an air volume and a terminal of air supplied to the device that needs air supply through the air supply duct. The present invention relates to an air volume / end pressure adjusting method for adjusting pressure.

  Small experimental animals such as mice, rats, guinea pigs, and hamsters used in the development of pharmaceuticals or various medical experiments and verifications are sufficient for bacterial infection of these experimental animals or bacterial diffusion from these experimental animals. It is kept in a laboratory animal room where the air balance of air supply and exhaust is adjusted so that proper management and countermeasures can be taken. In the laboratory animal breeding room, the laboratory animal breeding rack is used to protect laboratory animals from infection with bacteria and to prevent the spread of bacteria from the laboratory animal breeding room to the outside. Done. In the laboratory animal breeding room, a plurality of exhaust ducts are installed, and a plurality of laboratory animal breeding racks are installed. In an experimental animal breeding rack, experimental animals are raised in a cage that is detachably accommodated in the rack. Examples of laboratory animal breeding racks are disclosed in Japanese Patent No. 4191565, Japanese Patent Application Laid-Open No. 2010-041978, and Japanese Patent Application Laid-Open No. 2012-010615.

  These laboratory animal breeding racks are provided with an exhaust chamber for exhausting the air flowing into the cage out of the cage, and the air is exhausted to the outside of the experimental animal breeding room from each exhaust duct connected to the exhaust chamber. The These exhaust ducts merge with the main ducts, and the air sucked into the respective exhaust ducts is exhausted through the exhaust fans installed in the main ducts. By the way, since the air volume and pressure loss of the air exhausted from the exhaust chamber differ depending on each laboratory animal breeding rack, when the exhaust chamber of the laboratory animal breeding rack is connected to each exhaust duct, the damper installed in each exhaust duct The damper opening is adjusted according to the air volume of the exhausted air. At the time of adjusting the damper opening of the damper, the operator brings the sensor unit of the hot-wire anemometer close to the inlet of the exhaust duct, for example, and adjusts the damper opening while checking the air volume displayed on the anemometer.

  When the intake port of the exhaust duct exists at a high place, a measurement jig for bringing the sensor unit of the hot-wire anemometer near the intake port of the exhaust duct is used. Such a measuring jig includes a long main shaft, a positioning member attached to one end of the main shaft, and a gripping portion attached to the other end of the main shaft (see Patent Document 1). ). In this measuring jig, the positioning member is formed of a plurality of abutting members projecting upward and a sensor mounting member for attaching a sensor portion positioned below the abutting members and connected to the sensor portion. A measuring instrument bracket for installing the anemometer is attached to the gripping part.

JP-A-10-132840

  In the laboratory animal breeding room, keep the damper opening degree of the damper installed in the exhaust duct not connected to the exhaust chamber of the laboratory animal breeding rack fully closed or slightly opened. However, when an exhaust chamber of a laboratory animal breeding rack is connected to the exhaust duct, not only the damper opening degree of the damper installed in the exhaust duct is adjusted, but also each exhaust duct to which the exhaust chamber is already connected. Since the air volume and pressure loss of the exhaust duct system change, it is necessary to break the air volume balance of these exhaust duct systems and readjust the damper opening of these dampers. Every time the exhaust chamber of the laboratory animal breeding rack is connected to the exhaust duct, It is necessary to adjust the damper opening of all the dampers, and it takes time and effort to do so. The cost of etc. is required.

  Further, when adjusting the damper opening of the damper, the measuring jig disclosed in Patent Document 1 is used to bring the sensor part of the hot-wire anemometer close to the vicinity of the intake port of the exhaust duct and measure the air volume of the exhaust duct. In this case, the air volume is calculated based on the measured wind speed. However, since the air volume is calculated based on the inaccurate wind speed measured in the turbulent state of the air flow directly under the exhaust duct, the measured air volume fluctuates even with slight changes in the measurement conditions, and the damper opening based on the accurate air volume It cannot be adjusted and the damper opening cannot be set accurately. If the damper opening of each damper cannot be set accurately, the exhaust air of the laboratory animal rearing rack connected to each exhaust duct differs from the designed air volume and the designed end pressure (static pressure of the equipment), Since the air with the correct air volume cannot be exhausted from the cage of the rack, and the performance cannot be achieved as designed, it may affect the animal breeding environment.

  The object of the present invention is to complete the setting of the damper opening of the damper installed in the duct in the first adjustment step, and then to adjust the damper opening again in the step of connecting the equipment to the duct. It is an object of the present invention to provide an air conditioning system and an air volume / end pressure adjusting method that can easily replace a target device and can save the time and effort while installing the device at a low cost. Another object of the present invention is to adjust the damper opening of the damper based on the accurate air volume and end pressure, and to set the damper opening of the damper accurately. To provide an adjustment method.

  The premise of 1st invention for solving the said subject is the apparatus which requires exhaust, the exhaust duct connected to an apparatus so that attachment or detachment is possible, and the air volume which is installed in an exhaust duct and flows into an exhaust duct can be adjusted An air conditioning system that includes a damper and exhausts air from equipment using an exhaust duct.

  The feature of the first invention in the above premise is that the air conditioning system is detachably attached to the exhaust duct and adjusts the air flow volume that simulates the design air volume and design end pressure (static pressure of the equipment) that are individually required according to the equipment. In the air conditioning system, the air flow adjustment jig is attached to the exhaust duct before the device is connected to the exhaust duct. Is used to measure the differential pressure between the air inside and outside the air volume adjustment jig, and the damper opening of the damper is adjusted based on the differential pressure measured by the measuring device, so that the air volume flowing through the exhaust duct corresponds to the equipment. The damper opening is adjusted in advance so that it matches the design air volume and the pressure difference between the inside and outside air at the end of the exhaust duct matches the design end pressure (static pressure of the equipment) corresponding to the equipment. It lies in the fact that.

  In the air conditioning system as an example of the first invention, after the damper opening degree of the damper is adjusted using the air volume adjusting jig and the measuring instrument, the device is connected to the exhaust duct.

  As another example of the first invention, in the air conditioning system, there are a plurality of devices, a plurality of exhaust ducts are connected to the devices, dampers are individually installed in the exhaust ducts, After the damper opening of the damper is adjusted using a measuring instrument, the exhaust air that is not connected to the equipment is maintained while the air volume adjustment jig is attached to the exhaust duct that is not connected to the equipment. Air with the same airflow as the design airflow is exhausted from the exhaust duct via the airflow adjustment jig attached to the duct, and air with the same pressure as the design end pressure is exhausted from the exhaust duct via the airflow adjustment jig. Is exhausted.

  As another example of the first invention, in the air conditioning system, when connecting the device to the exhaust duct not connected to the device in which the air volume adjusting jig is attached, the damper opening degree of the damper is not adjusted again. Remove the air flow adjustment jig from the exhaust duct and connect the equipment to the exhaust duct.

  The premise of 2nd invention for solving the said subject is the apparatus which requires air supply, the air supply duct connected to an apparatus so that attachment or detachment is possible, and the air volume of the air which is installed in an air supply duct and flows into an air supply duct And an air conditioning system that supplies air to equipment using an air supply duct.

  The feature of the second invention based on the above premise is that the air conditioning system is detachably attached to the air supply duct and simulates the design air volume and the design end pressure (static pressure of the equipment) required individually according to the equipment. In the air conditioning system, the air volume adjustment jig is attached to the air supply duct before connecting the equipment to the air supply duct. The measuring device measures the differential pressure between the air inside and outside the air flow adjusting jig, and the damper opening degree is adjusted based on the differential pressure measured by the measuring device, so that the air volume flowing through the air supply duct is adjusted. The damper opening of the damper is adjusted in advance so that it matches the design air volume corresponding to the equipment, and the pressure difference between the inside and outside of the air supply duct end matches the design end pressure (static pressure of the equipment) corresponding to the equipment. The It lies in the fact that.

  In the air conditioning system as an example of the second aspect of the invention, after the damper opening degree of the damper is adjusted using the air volume adjusting jig and the measuring instrument, the device is connected to the air supply duct.

  As another example of the second invention, in the air conditioning system, there are a plurality of devices, and a plurality of air supply ducts are connected to the devices, and dampers are individually installed in the air supply ducts, and the air volume adjustment control is performed. After the damper opening of the damper is adjusted using a tool and a measuring instrument, the air flow adjustment jig is maintained with respect to the air supply duct that is not connected to the equipment and the equipment is not connected. Air of the same air volume as the design air volume is supplied from the air supply duct via the air volume adjustment jig attached to the connected air supply duct, and the design end is supplied from the air supply duct via the air volume adjustment jig. Air with the same pressure as the pressure is supplied.

  As another example of the second aspect of the present invention, in the air conditioning system, when devices are connected to an unconnected device air supply duct in a state where an air flow adjustment jig is attached, the damper opening degrees of the dampers are adjusted again. Remove the air flow adjustment jig from the air supply duct and connect the equipment to the air supply duct.

  The premise of the third invention for solving the above-mentioned problems is that an apparatus that requires exhaust, an exhaust duct that is detachably connected to the apparatus, and an air volume that is installed in the exhaust duct and flows through the exhaust duct can be adjusted. This is an air volume / end pressure adjusting method that adjusts the air volume and the terminal pressure of the air exhausted from the equipment through the exhaust duct by adjusting the damper opening of the damper.

  The feature of the third aspect of the invention is that the air volume / end pressure adjusting method simulates the design air volume and the design end pressure (static pressure of the equipment) individually required according to the equipment, and the air volume. A measuring instrument that measures the pressure of the air flowing through the adjusting jig, and before connecting the device to the exhaust duct, a jig mounting means for attaching the air volume adjusting jig to the exhaust duct, and an air volume adjusting jig attached to the exhaust duct. Based on the differential pressure measuring means that measures the differential pressure of the air inside and outside the instrument using a measuring instrument, and the differential pressure measured by the differential pressure measuring means, the air volume flowing through the air volume adjustment jig corresponds to the equipment And an opening adjustment means for adjusting the damper opening of the damper so that the differential pressure between the air inside and outside the air flow adjusting jig matches the design end pressure (static pressure of the device). There is.

  As an example of the third aspect of the invention, the air volume / end pressure adjusting method includes apparatus first connecting means for connecting the apparatus to the exhaust duct after adjusting the damper opening of the damper by the opening adjusting means.

  As another example of the third aspect of the present invention, in the air volume / end pressure adjusting method, there are a plurality of devices, a plurality of exhaust ducts are connected to the devices, and dampers are individually installed in the exhaust ducts. The connection maintaining means for maintaining the state in which the air volume adjusting jig is attached to the exhaust duct not connected to the equipment after the end pressure adjusting method adjusts the damper opening of the damper by the opening adjustment means; The air having the same air volume as the designed air volume is exhausted from the exhaust duct via the air volume adjusting jig attached to the exhaust duct not connected to the equipment, and the design end pressure and the air flow are adjusted from the exhaust duct via the air volume adjusting jig. Air exhaust means for exhausting air of the same pressure.

  As another example of the third invention, in the case where the air volume / end pressure adjusting method connects the equipment to the exhaust duct not connected to the equipment in which the air volume adjusting jig is attached by the connection maintaining means, these dampers are used. Without adjusting the damper opening degree again, the apparatus includes a second device connecting means for removing the air volume adjusting jig from the exhaust duct and connecting the device to the exhaust duct.

  The premise of 4th invention for solving the said subject is the apparatus which requires air supply, the air supply duct connected to an apparatus so that attachment or detachment is possible, and the air volume installed in the air supply duct and flowing into the air supply duct This is an air volume / terminal pressure adjusting method that adjusts the air volume and the terminal pressure of the air supplied to the equipment through the air supply duct by adjusting the damper opening of the damper.

  The feature of the fourth invention in the above premise is that the air volume / end pressure adjusting method simulates the design air volume and design end pressure (static pressure of the equipment) individually required according to the equipment, and the air volume. A measuring instrument that measures the pressure of the air flowing through the adjustment jig, and before connecting the equipment to the air supply duct, the air volume adjustment jig was attached to the air supply duct, and the air flow adjustment jig was attached to the air supply duct. Based on the differential pressure measuring means for measuring the differential pressure of the air inside and outside the air volume adjusting jig using a measuring instrument, and the differential pressure measured by the differential pressure measuring means, the air volume of the air flowing through the air volume adjusting jig is Opening adjustment means that adjusts the damper opening so that the air pressure inside and outside the air flow adjustment jig matches the design end pressure (static pressure of the equipment), while matching the design air volume corresponding to the equipment It is in having.

  As an example of the fourth aspect of the invention, the air volume / end pressure adjusting method includes apparatus first connecting means for connecting the apparatus to the air supply duct after adjusting the damper opening degree of the damper by the opening degree adjusting means.

  As another example of the fourth invention, in the air volume / end pressure adjusting method, there are a plurality of devices, a plurality of air supply ducts are connected to the devices, and dampers are individually installed in the air supply ducts. After adjusting the damper opening of the damper with the opening adjustment means, the air volume / terminal pressure adjustment method is used to maintain the state in which the air volume adjustment jig is attached to the air supply duct not connected to the equipment Air of the same air volume as the designed air volume is supplied from the air supply duct via the air volume adjustment jig attached to the maintenance means and the air supply duct not connected to the equipment, and the air supply is supplied via the air volume adjustment jig. Air supply means for supplying air of the same pressure as the design end pressure from the air duct.

  As another example of the fourth aspect of the invention, when the air volume / end pressure adjusting method is to connect equipment to an unconnected equipment air supply duct in which the air volume adjusting jig is attached by the connection maintaining means, A device second connection means for removing the air volume adjusting jig from the air supply duct and connecting the device to the air supply duct without adjusting the damper opening of the damper again is included.

As an example of the third and fourth inventions, the air volume adjusting jig extends in one direction and has a peripheral wall having one end opening and the other end opening, an air flow path extending in one direction between the openings, A pitot tube installed on the peripheral wall and extending from the outer peripheral surface of the peripheral wall to the air flow path, and a measuring instrument is detachably connected to the pitot tube exposed from the outer peripheral surface of the peripheral wall. In the air volume / end pressure adjustment method, the air volume flowing into the air flow path is calculated from the internal / external differential pressure, the cross-sectional area, and the circular pipe length that match the design air volume and the design end pressure. Ask. As an example of obtaining the air volume of the air flowing through the air flow path, the Darcy-Weiss-Bach equation (h = L / d · 1/2 · ρv ² ) can be used. In the Darcy-Weiss-Bach equation, h is the static pressure of the air flow path, that is, the pressure loss due to device connection, and is measured as a differential pressure by a differential pressure gauge. L is the length of the circular pipe of the air flow path of the air volume adjusting jig, and d is the opening area of the orifice in the air volume adjusting jig. ρ is the density of the fluid and v is the wind speed. The design air volume and the design end pressure are set in advance, the opening area of the orifice is obtained by this formula, and the air volume adjustment jig is manufactured. After attaching the air flow adjustment jig to the end of the duct, the damper opening of the duct is adjusted so that the differential pressure of the differential pressure gauge becomes the set end pressure. Since the air flow path extending in one direction of the air flow adjusting jig is open to the atmosphere, the actual pressure loss is corrected by multiplying the static pressure h of the air flow path by the coefficient c (h · c = L / d · 1/2 · ρv ² ).

  As another example of the third and fourth inventions, the opening area of the air flow path is adjusted to match the design air volume corresponding to the apparatus and the air volume of the air passing through the air flow path. Is adjusted to match the design end pressure corresponding to and the differential pressure inside and outside the air flow path.

  As another example of the third and fourth aspects of the present invention, an orifice plate capable of changing the area of the opening is detachably attached to one of the openings of the air volume adjusting jig. In the pressure adjustment method, by adjusting the area of the opening with the orifice plate, the design air volume corresponding to the equipment and the air volume passing through the air flow path are matched, and the design end pressure (static pressure of the equipment) corresponding to the equipment. ) And the differential pressure inside and outside the air flow path are made to coincide with each other by adjusting the damper opening of the duct.

  As another example of the third and fourth inventions, the orifice plate has an opening of a predetermined area opened at the center thereof, and in the air volume / end pressure adjusting method, a plurality of orifices having openings of different areas respectively. A board is prepared.

As another example of the third and fourth inventions, a dimension in one direction between the one end opening and the other end opening of the air volume adjusting jig is in a range of 100 to 150 mm.

  According to the air conditioning system that exhausts air from the equipment using the exhaust duct and the air volume / end pressure adjustment method, before connecting the equipment to the exhaust duct, the air volume adjustment jig is individually attached to the exhaust duct, and the measuring instrument Based on the pressure difference between the air inside and outside the air flow adjustment jig measured by the above, the air flow flowing through the exhaust duct matches the design air flow corresponding to the equipment, and the pressure difference between the air inside and outside the exhaust duct end Since the damper opening of the damper is adjusted to match the corresponding design end pressure (equipment static pressure), the design air flow and design end pressure (equipment static pressure) required individually for each device By using the simulated air volume adjusting jig, the damper opening degree of the damper can be adjusted in the same state as when the device is connected without actually connecting the device to the exhaust duct. The air conditioning system and the air volume / end pressure adjustment method can create the same state (passing air volume and pressure loss) as when the equipment is actually connected to the exhaust duct by connecting the air volume adjustment jig to the exhaust duct. The setting of the damper opening degree of the damper can be completed by adjustment when the air volume adjusting jig is connected. The air conditioning system and the air volume / end pressure adjustment method need only adjust the damper opening only when the air flow adjustment jig is connected, and then adjust the damper opening again even when the equipment is actually connected to the exhaust duct. It is not necessary to perform the operation, the target device can be easily replaced, and the steps, labor, and time by adjusting the damper opening degree again can be saved, and the device can be installed at a low cost. The air conditioning system and the air volume / end pressure adjustment method can match the air volume of the air exhausted from the exhaust duct with the design air volume corresponding to the equipment and the design end pressure (static pressure of the equipment) corresponding to the equipment. It is possible to exhaust the air with the required air volume and the end pressure from the equipment that needs to be exhausted.

  After the damper opening of the damper is adjusted using the air flow adjustment jig and measuring instrument, the air conditioning system in which the equipment is connected to the exhaust duct and the air flow / end pressure adjustment method should use the air flow adjustment jig. Therefore, the damper opening can be set by adjusting only when the air flow adjustment jig is connected, and the installation of the equipment is completed by connecting the equipment to the exhaust duct after adjusting the damper opening. Therefore, it is possible to quickly install the device, save labor and time required for installing the device, and install the device at low cost. After adjusting the air volume of a specific exhaust duct connecting a specific device by changing the damper opening, connect that device to that exhaust duct, and connect the next device to the exhaust duct in the same main duct system. Then, the connected equipment will lose the air volume balance in the main duct system, and the air volume and end pressure of the exhaust duct adjusted to the original design air volume will fluctuate, so it is necessary to adjust the damper opening degree again However, this air conditioning system and air volume / end pressure adjustment method are equipped with an air flow adjustment jig that simulates the design air volume and design end pressure (static pressure of the equipment) on each exhaust duct, and the actual equipment is installed in these exhaust ducts. After making the same state as when connected, adjust the damper opening of all dampers at once, so you can set the damper opening of all dampers accurately in one step To, even if connecting devices in order to each exhaust duct, not to change the air volume or the end pressure occurs in the exhaust duct is not necessary to re-adjust the damper opening degree of the damper.

  There are multiple types of devices, multiple exhaust ducts are connected to these devices, dampers are individually installed in these exhaust ducts, and the damper opening of the damper is adjusted using an air volume adjustment jig and a measuring instrument. After that, the air flow adjustment jig is maintained in the state where the air flow adjustment jig is attached to the exhaust duct which is not connected to the equipment, and the exhaust air is passed through the air flow adjustment jig attached to the exhaust duct which is not connected to the equipment. An air conditioning system and an air flow / end pressure adjustment method in which air with the same air volume as the design air volume is exhausted from the duct and air with the same pressure as the design end pressure is exhausted from the exhaust duct via the air volume adjustment jig. By leaving the air flow adjustment jig attached to the exhaust duct that is not connected to the equipment, the same pressure loss state as when the equipment to be connected in the future is connected to that exhaust duct is obtained. The design air volume and design end pressure (static pressure of the equipment) required for the equipment to be connected in the future can be maintained in the exhaust duct, and the air volume adjustment jig can be removed from the exhaust duct. Even if the devices are connected, there is no need to adjust the damper opening of the damper of each exhaust duct again, and the exhaust of air from each device can be continued using these exhaust ducts.

  When equipment is connected to an exhaust duct that is not connected to the equipment with the air flow adjustment jig attached, the air flow adjustment jig is removed from the exhaust duct without adjusting the damper opening of the damper again. The air conditioning system that connects the equipment to the airflow and the method for adjusting the airflow and the terminal pressure are in a state where the airflow adjustment jig is attached to the exhaust duct that is not connected to the equipment and will be connected to the exhaust duct in the future. The pressure loss state is the same as when the equipment is connected, and the design air volume and design end pressure (static pressure of the equipment) required for the equipment to be connected in the future are simulated in the exhaust duct. Therefore, after removing the air flow adjustment jig from the exhaust duct, it is possible to immediately connect the equipment to the exhaust duct. Time and effort to adjust the path opening again, while eliminating the cost, can be the equipment needed immediately usable state.

  According to the air conditioning system that supplies air to the equipment using the air supply duct and the air volume / end pressure adjustment method, the air flow adjustment jig is individually attached to the air supply duct before connecting the equipment to the air supply duct. Based on the differential pressure of the air inside and outside the air volume adjustment jig measured by the measuring instrument, the air volume flowing through the air supply duct matches the design air volume corresponding to the equipment, and the air inside and outside the end of the air supply duct Since the damper opening of the damper is adjusted so that the pressure difference between the two matches the design end pressure (static pressure of the device) corresponding to the equipment, the design air volume and the design end pressure (individually required depending on the equipment) By using an air flow adjustment jig that simulates the static pressure of the equipment, the damper opening of the damper can be adjusted in the same state as when the equipment is connected without actually connecting the equipment to the air supply duct. Can do. The air conditioning system and the air flow / end pressure adjustment method create the same state (passage air flow and pressure loss) as when the device is actually connected to the air supply duct by connecting the air flow adjustment jig to the air supply duct. The setting of the damper opening degree of the damper can be completed by adjustment when the air volume adjusting jig is connected. The air conditioning system and the air flow / end pressure adjustment method need only adjust the damper opening only when the air flow adjustment jig is connected, and then adjust the damper opening again even when the device is actually connected to the air supply duct. Therefore, the target device can be easily replaced, and the steps, labor, and time by adjusting the damper opening can be saved, and the device can be installed at a low cost. The air conditioning system and the air volume / end pressure adjustment method can match the air volume of the air supplied from the air supply duct with the design air volume corresponding to the equipment, and can handle the pressure difference between the air inside and outside the air supply duct. The designed end pressure (static pressure of the device) can be matched, and the air with the required air volume and the end pressure can be supplied to the device requiring air supply.

  An air conditioning system in which equipment is connected to an air supply duct and a method for adjusting the air volume / end pressure after the damper opening of the damper is adjusted using an air volume adjusting jig and a measuring instrument, and the air volume adjusting jig uses the air volume adjusting jig. Therefore, setting of the damper opening of the damper can be completed by adjusting only when the air flow adjustment jig is connected, and the equipment can be installed by connecting the equipment to the air supply duct after adjusting the damper opening. Since the installation is completed, the installation of the equipment can be performed quickly, and the labor and time required for the installation of the equipment can be saved, and the installation of the equipment can be performed at a low cost. After adjusting the air volume of a specific air supply duct that connects a specific device by changing the damper opening, connect the device to the air supply duct, and then air volume of the next air supply duct that connects the next device After measuring the following, when the next device is connected to the air supply duct in the same main duct system, the connected device loses the air flow balance in the main duct system, and the air supply duct adjusted to the original design air flow Since the air volume and the terminal pressure will fluctuate, it is necessary to adjust the damper opening degree again. This air conditioning system and the air volume / terminal pressure adjustment method are designed for each supply duct with the design air volume and the design end pressure ( Since an air flow adjustment jig that simulates the static pressure of the equipment is installed and the same state as when the equipment is actually connected to these air supply ducts is created, the damper openings of all the dampers are adjusted at one time. All in the process The damper opening of the damper can be set accurately, and even if equipment is connected to each air supply duct in sequence, there will be no fluctuations in the air volume and end pressure in each air supply duct, and the damper damper will open. There is no need to readjust the degree.

  There are various types of devices, multiple air supply ducts are connected to these devices, dampers are individually installed in these air supply ducts, and the damper opening of the damper using an air volume adjustment jig and a measuring instrument After the air flow is adjusted, the air flow adjustment jig attached to the air supply duct not connected to the equipment is maintained while the air flow adjustment jig is attached to the air supply duct not connected to the equipment. An air conditioning system in which air with the same air volume as the design air volume is supplied from the air supply duct via the air supply duct, and air with the same pressure as the design end pressure is supplied from the air supply duct via the air flow adjustment jig. The air volume / end pressure adjustment method is the same as when the equipment to be connected in the future is connected to the air supply duct by leaving the air flow adjustment jig attached to the air supply duct not connected to the equipment. Set pressure loss The design air volume and design end pressure (static pressure of the equipment) required for the equipment to be connected in the future can be maintained in the air supply duct, and the air flow adjustment jig can be installed from the air supply duct. Even if the device is removed and connected, it is not necessary to adjust the damper opening of the damper of each air supply duct again, and the air supply to each device can be continued using these air supply ducts.

  When connecting equipment to an unconnected air supply duct with the airflow adjustment jig attached, remove the airflow adjustment jig from the air supply duct without adjusting the damper opening of the damper again. The air conditioning system that connects equipment to the air supply duct and the method for adjusting the air volume / end pressure are in the state that the air flow adjustment jig is attached to the air supply duct that is not connected to the equipment and that is connected to the air supply duct. The pressure loss state is the same as when a device to be connected in the future is connected, and the design air volume and design end pressure (static pressure of the device) required for the device to be connected in the future are supplied. Since the air duct is in a simulated state, after the air flow adjustment jig is removed from the air supply duct, equipment can be immediately connected to the air supply duct, and the damper of each air supply duct can be connected. Time and effort to adjust the path opening again, while eliminating the cost, can be the equipment needed immediately usable state.

  The difference in which the flow rate adjusting jig is formed from a peripheral wall having one end opening and the other end opening, an air flow path extending in one direction, and a pitot tube extending from the outer peripheral surface of the peripheral wall to the air flow path, and the measuring instrument is connected to the pitot tube This is a pressure gauge, and the air volume / end pressure adjustment method for determining the air volume flowing into the air flow path from the internal and external differential pressure, the cross-sectional area and the circular pipe length that matches the design air flow and the design end pressure is a manometer, etc. By adjusting the damper opening of the damper of the exhaust duct or the supply duct while looking at the indicated value of the differential pressure gauge, not only the air volume of the duct but also the end pressure of the duct can be matched with the designed end pressure. When the air volume of the duct is measured without using the air volume adjustment jig, the measurement conditions are not uniform, and the accurate air volume in each duct cannot be measured. Since the air volume of the air flowing through the air flow path is obtained from the differential pressure inside and outside the air flow path that matches the design end pressure, the cross-sectional area, and the circular pipe length of the air flow path, the accurate air flow can be determined. The air volume / end pressure adjustment method allows the air volume and end pressure of the air flowing in the duct to match the design air volume and the design end pressure (static pressure of the equipment) corresponding to each equipment. The air with the required air volume and the end pressure can be exhausted from the air and the air with the required air volume and the end pressure can be supplied to each device using the air supply duct.

  The opening area of the air flow path of the air flow adjustment jig is adjusted to match the design air volume corresponding to the equipment and the air flow through the air flow path, and the design end pressure corresponding to the equipment (static pressure of the equipment) ) And the air volume / end pressure adjustment method adjusted to match the pressure difference between the inside and outside of the air flow path is the design air volume required for the equipment to be connected to the duct in the future using the air volume adjustment jig. And the design end pressure (static pressure of the equipment) can be simulated reliably, and the same state as when the equipment is actually connected to the duct can be created. Remove the air volume adjustment jig from the duct. Even if the equipment is connected, it is not necessary to adjust the damper damper opening again, and the exhaust duct can be used to exhaust air with the required air volume and end pressure from each equipment. It is possible to supply the air of air volume and distal pressure as desired in each device by utilizing the duct.

  An orifice plate that can change the area of the opening of the air volume adjustment jig is detachably attached. By adjusting the area of the opening with the orifice plate, the design air volume and design end pressure (static pressure of the equipment) corresponding to the equipment The air volume / end pressure adjustment method that matches the air volume and the end pressure of the air passing through the air flow path of the air volume adjustment jig uses the air volume adjustment jig whose opening area is adjusted by the orifice plate, so that the duct can be used in the future. The design air volume and design end pressure (equipment static pressure) required for the equipment to be connected can be reliably simulated, and the same state as when the equipment is actually connected to the duct can be created. Even if the air flow adjustment jig is removed from the duct and the equipment is connected, it is not necessary to adjust the damper opening of the damper of the duct again. It is possible to exhaust the air in the air volume and distal pressure determined exactly, can utilize the air supply duct to supply the air volume and the end pressure air as desired in each device.

  The orifice plate has an opening of a predetermined area that opens at the center thereof, and a plurality of orifice plates having openings of different areas are prepared. The air volume / end pressure adjusting method includes orifice plates having various opening areas. Prepare and attach an orifice plate selected from the orifice plates according to the design air volume to the air volume adjustment jig, so that the air volume and terminal pressure of the air passing through the air flow path of the air volume adjustment jig can be used for various devices. The design air flow and the design end pressure (static pressure of the equipment) can be matched. The air volume / end pressure adjustment method uses an air volume adjustment jig whose opening area is adjusted by an orifice plate, so that the design air volume and design end pressure (equipment static pressure) required for the equipment to be connected to the duct in the future are used. Pressure) can be reliably simulated, and the same pressure loss state as when the equipment is actually connected to the duct can be created, so even if the air flow adjustment jig is removed from the duct and the equipment is connected It is not necessary to adjust the damper opening of the damper of the duct again, it is possible to exhaust air with the required air volume and end pressure from each device using the exhaust duct, and each air using the air supply duct The device can be supplied with air flow and end pressure as required.

The air volume / terminal pressure adjustment method in which the unidirectional dimension between the one end opening and the other end opening of the air volume adjusting jig is in the range of 100 to 150 mm is used for air volume adjustment for ducts not connected to equipment. When maintaining the fixture attached, the unidirectional dimensions of the air flow adjustment jig are within the above range, so the air flow adjustment jig attached to the duct does not interfere with the operator and the equipment is not connected. Work can be performed smoothly in the vicinity of the duct.

Schematic of an air conditioning system (exhaust from equipment) shown as an example. The perspective view of the rack for experimental animal breeding shown as an example. The perspective view of the air volume adjustment jig shown as an example. The side view of an air volume adjustment jig. The bottom view which shows the one end opening of an air volume adjustment jig | tool (an orifice board mounting state). The bottom view which shows the one end opening of an air volume adjustment jig | tool (an orifice board removal state). The schematic diagram of the air-conditioning system shown in the state before attaching an air volume adjustment jig to the end of an exhaust duct. The schematic diagram of the air-conditioning system shown in the state after attaching the air volume adjustment jig to the exhaust duct end. Those perspective views shown in the state which connected the manometer to the air volume adjustment jig | tool. The schematic of the air-conditioning system shown in the state before connecting an exhaust duct to the exhaust chamber of the laboratory animal breeding rack. The schematic diagram of the air-conditioning system in the case of newly connecting the laboratory animal breeding rack to the exhaust duct not connected to the equipment. The schematic of the air-conditioning system (air supply to an apparatus) shown as another example. The schematic diagram of the air-conditioning system shown in the state before attaching an air volume adjustment jig to the air supply duct end. The schematic diagram of the air-conditioning system shown in the state after attaching the air volume adjustment jig to the air supply duct end. The schematic diagram of the air-conditioning system shown in the state before connecting an air supply duct to the clean bench of a working room. Schematic of an air conditioning system when a clean bench is newly connected to an air supply duct that is not connected to equipment.

  The details of the air conditioning system and the air volume / end pressure adjusting method according to the present invention will be described with reference to the accompanying drawings such as FIG. It is. 2 is a perspective view of an experimental animal breeding rack 12 (equipment) shown as an example, and FIG. 3 is a perspective view of an air volume adjusting jig 18 shown as an example. 4 is a side view of the air volume adjusting jig 18, and FIG. 5 is a bottom view showing the one end opening 25 of the air volume adjusting jig 18 with the orifice plate 30 attached. FIG. 6 is a bottom view showing the one end opening 25 of the air volume adjusting jig 18 with the orifice plate 30 removed.

  FIG. 1 shows a state in which laboratory animal breeding racks 12A and 12B (equipment) are installed in advance in an experimental animal breeding room 11 (building) and an air conditioning system 10A is installed in the experimental animal breeding room 11. . In FIG. 1, the exhaust duct 16 (flexible duct 16D) is connected to the exhaust cylinder 24 of the exhaust chamber 21 of the two laboratory animal breeding racks 12A and 12B installed in the laboratory animal breeding room 11, and the remaining exhaust ducts. 16 (flexible duct 16D) is not connected to the exhaust cylinder 24 of the exhaust chamber 21, and air volume adjusting jigs 18C and 18D are attached to the ducts 16.

  In FIG. 1, the laboratory animal breeding racks 12 </ b> C and 12 </ b> D scheduled to be installed in the next step are indicated by two-dot chain lines. In FIG. 3, one direction is indicated by an arrow A. 5 shows a state in which the orifice plate 30 is attached to the one end opening 25 of the air volume adjusting jig 18, and FIG. 6 shows a state in which the orifice plate 30 is not attached to the one end opening 25 of the air volume adjusting jig 18. .

  In this embodiment, an experimental animal breeding room 11 is taken as an example of a building, and a plurality of laboratory animal breeding racks 12 are taken as examples of equipment, and the air conditioning system 10A and the air volume / end pressure adjusting method according to the present invention will be described. The building is not limited to the laboratory animal breeding room 11, and the equipment is not limited to the laboratory animal breeding rack 12. In addition to the laboratory animal breeding room 11, the building includes, for example, a plant breeding plant, a drug development laboratory, a work room where a clean bench is installed, a clean room used for semiconductor manufacturing, and the equipment is a laboratory animal breeding room. In addition to the rack 12 for use, for example, a plurality of experimental plant cultivation cases installed in the room of the plant growing plant, a plurality of biological culture cases installed in the room of the drug development laboratory, and installed in the room of the work room There are various types of clean benches, various types of semiconductor manufacturing apparatuses installed in a clean room for manufacturing semiconductors, and the like. In some cases, the air volume and terminal pressure are adjusted for outdoor equipment depending on the application of the air supply and exhaust facilities.

  The air conditioning system 10 </ b> A includes an air supply fan 13 (air supply device) that supplies air into the laboratory animal breeding room 11, an air supply duct 14 connected to the air supply fan 13, and the laboratory animal breeding room 11 room. An exhaust fan 15 (exhaust device) for exhausting air from the exhaust fan, an exhaust duct 16 connected to the exhaust fan 15, a plurality of laboratory animal breeding racks 12 installed in the laboratory animal breeding room 11, and their exhaust Airflow adjustment dampers 17A to 17D installed in the duct 16 (flexible duct 16D) and a plurality of airflow adjustment jigs for simulating the design airflow and design end pressure required individually according to the laboratory animal breeding rack 12 18A-18D. In the air conditioning system 10A, a manometer 19 which will be described later is used as a measuring instrument, and the manometer 19 makes a differential pressure between the air volume adjusting jigs 18A to 18D (differential pressure inside and outside the air flow path 28 of the air volume adjusting jigs 18A to 18D). Is measured.

  The experimental animal breeding room 11 has a predetermined volume of air-conditioned space surrounded by a ceiling, a floor, front and rear walls, and side walls, and is partitioned from the outside by the ceiling, floor, and these walls. Note that the door is not shown. An air supply port (not shown) for taking in air supplied from the air supply duct 14 via the air supply fan 13 into the experimental animal breeding room 11 is provided on the ceiling. The air is maintained at a predetermined temperature and humidity in an air conditioner (not shown) installed outside the experimental animal breeding room 11, and clean air sterilized by the air purifier is fed from the air supply port to the experimental animal breeding room. It is supplied into the room 11.

  The laboratory animal breeding racks 12 are installed in the laboratory animal breeding room 11. An operator who raises experimental animals performs laboratory animal breeding work using the experimental animal breeding rack 12 in the laboratory animal breeding room 11. The laboratory animal breeding rack 12 is formed of a rack body 20 and an exhaust chamber 21 attached to the rack body 20. The structure of the laboratory animal breeding rack 12 (the rack body 20 and the exhaust chamber 21) is the same as that disclosed in Japanese Patent No. 4191565, Japanese Patent Application Laid-Open No. 2010-041978, and Japanese Patent Application Laid-Open No. 2012-010615. Detailed description thereof will be omitted.

  The rack body 20 includes a plurality of cage housing portions 23 for detachably housing the laboratory animal breeding cages 22, and air exhaust ports (not shown) formed in the cage housing portions 23. Although not shown, a guide rail for smoothly inserting the cage 22 is installed in the cage housing portion 23. The air exhaust port is a circular opening formed in the ceiling of the cage housing portion 23, and a plurality of them are arranged in a line. The air exhaust port is located above the front wall side of the cage 22 when the breeding cage 22 is accommodated in the cage accommodating portion 23 of the rack 12.

  The breeding cage 22 has front and rear walls and both side walls, a bottom wall and a top opening. The walls are made of transparent plastic and are formed into a substantially rectangular shape. The breeding cage 22 defines a breeding space of a predetermined volume surrounded by the walls. In order to house the breeding cage 22 in the cage housing 23, the cage 22 is inserted into the housing 23 from the front of the cage housing 23. In order to take out the breeding cage 22 from the cage housing portion 23, the cage 22 is pulled out from the cage housing portion 23.

  The laboratory animal breeding rack 12 differs in required exhaust air volume and static pressure depending on the model and operating conditions. Therefore, in the laboratory animal breeding racks 12, the air volume and the terminal pressure (static pressure) of the air exhausted from the exhaust chamber 21 are different from each other, and the design air volume and the designed terminal pressure required individually according to the racks 12 are set beforehand. It has been decided.

  The exhaust chamber 21 is installed on the back side of the rack body 20, and exhausts air flowing inside each breeding cage 22 housed in the cage housing portion 23 to the outside of the experimental animal breeding room 11 through the exhaust duct 16. The exhaust chamber 21 is provided with an exhaust cylinder 24 at the top thereof. The exhaust duct 16 is formed of a main duct 16A and a plurality of branch ducts 16B branched from the main duct 16A. The main duct 16A is connected to an exhaust fan 15 installed outside the room. In FIG. 1, four branch ducts 16 </ b> B are illustrated, but the number of branch ducts 16 </ b> B is not particularly limited, and the number of ducts 16 </ b> B depends on the number of laboratory animal breeding racks 12 installed in the laboratory animal breeding room 11. Determined.

  A branch duct 16B extending from the main duct 16A in the indoor ceiling to the indoor ceiling is formed of a terminal duct 16C below the ceiling and a bellows-shaped flexible duct 16D extending from the terminal duct 16C to the room. The end ducts 16C are provided with air volume adjusting dampers 17A to 17D for adjusting the air volume of the air flowing therethrough. In the experimental animal breeding room 11 of FIG. 1, two of the flexible ducts 16D are connected to the exhaust cylinder 24 of the exhaust chamber 21, and the air volume adjusting jigs 18C and 18D are attached to the remaining two. .

  As the dampers 17A to 17D, VD (Volume Damper) is used, but MD (Motor Damper) can also be used. The dampers 17A to 17D pass through a side surface of the end duct 16C and extend into the duct 17D, swirl vanes attached to the rotation shaft, and a rotation shaft extending from the side surface of the duct 16C to the outside of the duct 16C. It is formed from an installed damper operating device. A handle having a lever or a worm gear is used for the damper operation device. In the dampers 17 </ b> A to 17 </ b> D, by turning the lever or rotating the handle, the swirl vanes are swung in the duct 16 </ b> C, and the air flow path of the duct 16 </ b> C can be opened and closed from fully open to fully closed. The air volume of the air passing through the duct 16C (the branch duct 16B of the exhaust duct 16) is adjusted by the swirl angle (damper opening) of the swirl vanes.

  As shown in FIG. 3, the air volume adjusting jig 18 is formed in a cylindrical shape extending in one direction. The air volume adjusting jig 18 includes a peripheral wall 27 having one end opening 25 and another end opening 26, an air flow path 28 having a circular cross section extending in one direction between the openings 25 and 26, and a Pitot tube installed on the peripheral wall 27. 29. An orifice plate 30 (disk) having a circular opening 31 having a predetermined area is detachably attached to one end opening 25 of the peripheral wall 27.

  The air volume adjusting jig 18 and the orifice plate 30 are made of a metal such as stainless steel, aluminum, or brass. The other end of the air volume adjusting jig 18 is inserted into the front end of the flexible duct 16D. Although not shown, a fixed belt is wound around the outer peripheral surface of the front end of the duct 16D. 18 is attached to the duct 16D. It should be noted that the air volume adjusting jig 18 can be removed from the tip of the duct 16D by releasing the fixing by the fixing belt.

  The air flow path 28 is formed in the center of the air volume adjusting jig 18 and penetrates between the one end opening 25 and the other end opening 26. The pitot tube 29 passes through the peripheral wall 27 and reaches the air flow path 28 of the air volume adjusting jig 18 as shown in FIGS. The Pitot tube 29 has a first exposed portion 29 </ b> A that is exposed to the outside from the outer peripheral surface of the peripheral wall 27, and a second exposed portion 29 </ b> B that is exposed to the air flow path 28.

  The orifice plate 30 has a circular opening 31 formed in the center thereof, and is fixed to the one end opening 25 of the air flow adjusting jig 18 by a mounting screw 32 inserted into a screw hole drilled in the peripheral wall 27 of the air flow adjusting jig 18. ing. Although not illustrated, a plurality of orifice plates 30 having different opening areas are prepared, and a selected one of the orifice plates 30 is attached to one end opening 25 of the air volume adjusting jig 18 to adjust the air volume. The opening area (opening diameter) of the jig 18 can be changed.

  The air volume adjusting jig 18 performs calculations so as to realize the air flow conditions simulating the design air volume and static pressure of the laboratory animal breeding rack 12, and the length of the cylinder forming the air volume adjusting jig 18 or the opening of the orifice The area and the air pressure adjusting jig 18 are designed and manufactured with an assumed differential pressure inside and outside.

  The design air volume of the laboratory animal breeding rack 12 is, in other words, the design exhaust air volume of the air flowing through the branch duct 16B of the exhaust duct 16 to which the rack 12 is connected, and the design end pressure (static pressure) of the rack 12 is In other words, this is the design end pressure of the branch duct 16B of the duct 16 to which the rack 12 is connected. If the design air volume and the design end pressure of each experimental animal breeding rack 12 differ depending on the model and use conditions, changing the orifice opening diameter (opening area) of the air volume adjusting jig 18 allows connection of equipment with different conditions. Can be simulated.

  In order to change the opening diameter (opening area) of the air flow path 28 of the air flow adjusting jig 18, the orifice plates 30 having different opening diameters (opening area) are attached. When the orifice plate 30 is attached to the one end opening 25 of the air volume adjusting jig 18, the area of the one end opening 25 of the air volume adjusting jig 18 changes depending on the area of the opening 31 of the orifice plate 30, thereby the air flowing into the air flow path 28. The air volume and the end pressure of the air flow path 28 can be changed, and the air volume of the air passing through the air flow path 28 and the end pressure of the air flow path 28 can be matched with the design air volume and the design end pressure of each rack 12.

In the air conditioning system 10A (air volume / end pressure adjusting method), a plurality of orifice plates 30 having different opening areas depending on the design value of the air volume adjusting jig 18 are prepared. The orifice plate 30 selected in this manner is detachably attached to the one end opening 25 of the air volume adjusting jig 18 so that the air volume passing through the air flow path 28 of the air volume adjusting jig 18 and the terminal pressure of the air flow path 28 are measured. The design air volume and the design end wind pressure corresponding to the animal breeding rack 12 can be matched. As an example of obtaining the opening diameter of the air volume adjusting jig 18 and the opening diameter of the orifice plate 30, the Darcy-Weiss-Bach equation (h = L / d · 1/2 · ρv ² ) can be used. . Here, h is the static pressure, L is the length of the cylindrical tube of the air volume adjusting jig 18 (air flow path 28), d is the opening diameter of the air volume adjusting jig 18, ρ is the fluid density, and v is the air speed (m / s). Substituting the pressure difference (static pressure), the wind speed, and the air volume into the above formula, the aperture diameter is obtained. However, since one side of the air flow path 28 is open to the atmosphere, the friction coefficient h is multiplied by the coefficient c so that the correction is made to approximate the actual air flow.

  In the air conditioning system 10A of FIG. 1 (air volume / end pressure adjusting method), it is installed in the end duct 16C (branch duct 16B of the exhaust duct 16) connected to the exhaust cylinder 24 of the exhaust chamber 21 of the laboratory animal breeding racks 12A, 12B. The turning angle (damper opening) of the turning blades of the dampers 17A and 17B is adjusted. The swirl angle of the swirl vanes of the dampers 17A and 17B is such that the air flow through the end duct 16C and the flexible duct 16D, the end pressure of the end duct 16C and the flexible duct 16D, and the design air volume corresponding to the laboratory animal breeding racks 12A and 12B. And the adjustment is already completed so that the design end pressure matches.

  Further, in the air conditioning system 10A (air volume / end pressure adjusting method) in FIG. 1, the air duct is installed in the end duct 16C (branch duct 16B of the exhaust duct 16) continuous to the flexible duct 16D to which the air volume adjusting jigs 18C and 18D are attached. Further, the turning angle (damper opening) of the turning blades of the dampers 17C and 17D is adjusted. The swirl angle of the swirl vanes of the dampers 17C and 17D corresponds to the air volume flowing through the end duct 16C and the flexible duct 16D, the end pressure of the end duct 16C and the flexible duct 16D, and the experimental animal breeding racks 12C and 12D to be installed. Design air volume and design end pressure (the air volume flowing in the air volume adjustment jigs 18C and 18D simulating the design air volume and the design end pressure of the laboratory animal breeding racks 12C and 12D and the end pressure of the air volume adjustment jigs 18C and 18D). Adjustment has already been completed to match.

  FIG. 7 is a schematic diagram of the air conditioning system 10A shown before the air volume adjusting jigs 18A to 18D are attached to the exhaust duct 16, and FIG. 8 is a diagram after the air volume adjusting jigs 18A to 18D are attached to the exhaust duct 16. It is a schematic diagram of air-conditioning system 10A shown in the state. FIG. 9 is a perspective view showing the manometer 19 connected to the air flow adjusting jig 18, and FIG. 10 shows a state before the exhaust duct 16 is connected to the exhaust chamber 21 of the laboratory animal breeding racks 12A and 12B. It is a schematic diagram of air-conditioning system 10A shown in a state. 7, 8, and 10, laboratory animal breeding racks 12 </ b> A to 12 </ b> D that are not installed in the laboratory animal breeding room 11 are indicated by two-dot chain lines. In FIG. 8, the air flow is indicated by arrows.

  The procedure of the air volume / terminal pressure adjustment method in the air conditioning system 10A will be described based on FIGS. In the air volume / end pressure adjusting method, the air volume adjusting jig 18 and the manometer 19 are used. In the laboratory animal breeding room 11 before the air volume / end pressure adjusting method is implemented, as shown in FIG. 7, the laboratory animal breeding rack 12 is not installed in the room and the exhaust duct 16 connected to the exhaust fan 15 is provided. The end duct 16C and the flexible duct 16D extend into the room.

  Next, in the laboratory animal breeding room 11 in the state of FIG. 7, before connecting the exhaust pipes 24 of the laboratory animal breeding racks 12A to 12D to the flexible duct 16D, as shown in FIG. The air volume adjustment jigs 18A to 18D are individually attached to the tip (jig attachment means). By attaching the air volume adjusting jigs 18A to 18D to each duct 16D, the same state as that in which the experimental animal breeding racks 12A to 12D having different design air volumes and design end pressures are connected to the respective ducts 16D (passing air volume and Pressure loss) is created.

  After attaching the air volume adjusting jigs 18A to 18D to each flexible duct 16D (the branch duct 16B of the exhaust duct 16), as shown in FIG. 9, the hose is connected to the first exposed portion 29A of the pitot tube 29 of the air volume adjusting jig 18. A manometer 19 (differential pressure gauge) is connected via 36, and the manometer 19 measures the differential pressure of the air inside and outside the air flow path 28 of the air volume adjusting jigs 18A to 18D (differential pressure measuring means). The differential pressures of the air volume adjusting jigs 18A to 18D may be measured in order for each of the jigs 18A to 18D, or all the jigs 18A to 18D may be measured at a time.

The air flow flowing into the air flow path 28 is determined from the differential pressure inside and outside the air flow path 28 and the cross-sectional area of each of the air flow rate adjusting jigs 18A to 18D using the Darcy-Weiss-Bach equation. While the air volume is determined, the terminal pressure of the air flowing through the air flow path 28 is determined from the air volume, and the differential pressure condition for each of the air volume adjusting jigs 18A to 18D is determined. When measuring the differential pressure between the air inside and outside the air flow path 28 of the air flow adjusting jigs 18 </ b> A to 18 </ b> D, the air supply fan 13 and the exhaust fan 15 are operated, and the set flow rate (m ³ / h) via the air supply duct 14. Is supplied to the experimental animal breeding room 11, and air of a set flow rate (m ³ / h) is exhausted to the outside of the experimental animal breeding room 11 through each branch duct 16 B of the exhaust duct 16.

  The manometer 19 displays the differential pressure of the air inside and outside the air flow path 28 of the orifices 18A to 18D. While checking the differential pressure displayed on the manometer 19, based on the measured differential pressure, the levers of the dampers 17A to 17D are turned, or the dampers 17A to 17D are rotated by rotating the handles of the dampers 17A to 17D. The swirl angle (damper opening) of the swirl vane is adjusted (opening adjusting means). In the opening adjustment means, the differential pressure of the air inside and outside the air volume adjusting jigs 18A to 18D is set so that the air volume flowing through the air volume adjusting jigs 18A to 18D corresponds to the laboratory animal breeding racks 12A to 12D (equipment). The swivel angle (damper opening) of the swirl vanes of the dampers 17A to 17D is adjusted so as to coincide with the designed end pressure.

  By adjusting the swirl angle of the swirl vanes of the dampers 17A to 17D, the differential pressure displayed on the manometer 19 becomes the design differential pressure (design end pressure) of the air inside and outside the air flow path 28 of each of the air volume adjusting jigs 18A to 18D. ) (The measured differential pressure and the design end pressure match), or the differential pressure displayed on the manometer 19 is the differential pressure (design) of the air inside and outside the air flow path 28 of each of the air volume adjusting jigs 18A to 18D. End pressure) (when the measured differential pressure falls within the design end pressure range), the swing angle (damper opening) of the swing blades of the dampers 17A to 17D at that time is set to the dampers 17A to 17D. The turning angle of the turning blade is fixed to the turning angle.

  By setting the swirl angle of the swirl vanes of the dampers 17A to 17D to an appropriate swivel angle, the amount of air flowing through the air volume adjusting jigs 18A to 18D and the design air volume required for the laboratory animal breeding racks 12A to 12D Are equal to each other, and the differential pressure (terminal pressure) between the air inside and outside the air volume adjusting jigs 18A to 18D and the designed terminal pressure required for each of the laboratory animal breeding racks 12A to 12D are matched. Accordingly, the air volume adjusting jigs 18A to 18D are actually connected to the branch duct 16B (exhaust duct 16), and the rack for the experimental animal breeding racks 12A to 12D is not connected to the duct 16B, but the rack is mounted on the duct 16B. The same ventilation state can be created when 12A to 12D are connected.

  The manometer 19 is connected to all the air volume adjusting jigs 18A to 18D, and the swivel angles (damper opening degrees) of the swirling blades of the dampers 17A to 17D are appropriately adjusted while measuring the differential pressures of the air volume adjusting jigs 18A to 18D. After the adjustment, the air volume adjusting jigs 18A and 18B are removed from the flexible duct 16D (exhaust duct 16) where the experimental animal breeding racks 12A and 12B are to be installed, and the racks are mounted on the duct 16D as indicated by arrows in FIG. The exhaust cylinders 24 of the exhaust chambers 21A and 12B are connected (equipment first connection means). Note that the experimental animal breeding racks 12C and 12D are scheduled to be connected in the future, and the air volume adjusting jigs 18C and 18D are kept attached to the duct 16D that is not connected to the racks 12C and 12D. Connection maintenance means).

  After adjusting the swivel angle (damper opening) of the swirl vanes of the dampers 17A to 17D to an appropriate one, leave the air volume adjusting jigs 18C and 18D attached to the flexible duct 16D (exhaust duct 16) that is not connected to the equipment. Thus, the same state as that in which the laboratory animal breeding racks 12C and 12D are connected to the duct 16D can be obtained. In the laboratory animal breeding racks 12A and 12B connected to the duct 16D, the air in the racks 12A and 12B (inside the cage 22) is exhausted from the racks 12A and 12B to the outside of the laboratory animal breeding room 11 via the exhaust duct 16. In the duct 16D in which the air volume adjusting jigs 18C and 18D are fixed, air is exhausted outside the experimental animal breeding room 11 through the air flow path 28 of the air volume adjusting jigs 18C and 18D. In the branch duct 16B, which is not connected to the device, in which the air volume adjusting jigs 18C and 18D are fixed, air having the same air volume as the design air volume of the laboratory animal breeding racks 12C and 12D is exhausted by the air volume adjusting jigs 18C and 18D. At the same time, air having the same end pressure as the designed end pressure of the laboratory animal breeding racks 12C and 12D is exhausted (air exhaust means).

  Note that the dimension L1 in one direction of the air volume adjusting jig 18 (the dimension between the one end opening 25 and the other end opening 26 of the air volume adjusting jig 18) is in the range of 100 to 150 mm. When the unidirectional dimension L1 of the air flow adjusting jig 18 exceeds 150 mm, the air flow adjusting jig 18C, 18D is attached to the tip of the flexible duct 16D not connected to the air flow adjusting jig 18D downward from the duct 16D. 18C and 18D extend greatly, and the air volume adjusting jigs 18C and 18D may obstruct the work. When the air volume adjusting jigs 18C and 18D are maintained attached to the duct 16D not connected to the equipment to which the experimental animal breeding racks 12C and 12D are not connected, the unidirectional dimension L1 of the air volume adjusting jigs 18C and 18D is Since it is in the above range, the air volume adjusting jigs 18C, 18D attached to the duct 16D do not obstruct the operator's work, and the work can be smoothly performed in the vicinity of the duct 16D not connected to the equipment.

  The air-conditioning system 10A and the air volume / end pressure adjusting method are such that these air volume adjusting jigs are connected to the laboratory animal breeding racks 12A to 12D (equipment) before connecting them to each flexible duct 16D (each branch duct 16B of the exhaust duct 16). 18A to 18D are individually attached to each duct 16D, and based on the differential pressure of the air inside and outside the air flow path 28 of the air volume adjusting jigs 18A to 18D measured by the manometer 19 (measuring instrument), The flow rate of the flowing air matches the design flow rate corresponding to the racks 12A to 12D, and the end pressure of the duct 16B matches the design end pressure corresponding to the racks 12A to 12D. Since the swirl angle (damper opening) of the swirl vane is adjusted, these racks 12A-12 By using the air volume adjusting jigs 18A to 18D that simulate the design air volume and the design end pressure that are individually required according to each of the ducts 16B, even if the racks 12A to 12D are not actually connected to each duct 16B. The swivel angle of the swirl vane can be adjusted in the same state as when the racks 12A to 12D are connected to the rack.

  In the air conditioning system 10A and the air volume / end pressure adjusting method, the air volume adjusting jigs 18A to 18D are connected to the branch duct 16B (exhaust duct 16), whereby the laboratory animal breeding racks 12A to 12D are connected to the duct 16B. The setting of the swirl angle (damper opening) of the swirling blades of all the dampers 17A to 17D can be completed by adjusting in one step when the air volume adjusting jigs 18A to 18D are connected. can do. The air conditioning system 10A and the air volume / end pressure adjustment method need only adjust the swirl angle (damper opening) of the swirling blades when the air volume adjusting jigs 18A to 18D are connected, and then the branch duct 16B (exhaust duct 16). Even when the laboratory animal breeding racks 12C and 12D are connected to each other, it is not necessary to adjust the turning angle again, the desired racks 12C and 12D can be easily replaced, and the turning angle is adjusted again. Save time and effort.

  The air conditioning system 10A and the air volume / end pressure adjusting method adjust the swirl angle (damper opening) of the swirling blades of the dampers 17A to 17D when the air volume adjusting jigs 18A to 18D are connected, and then the branch ducts 16B ( By connecting the laboratory animal breeding racks 12A and 12B to the exhaust duct 16), the experimental animal breeding room 11 in which various racks 12A and 12B are installed is completed, and the racks 12A and 12B for the experimental animal breeding room 11 are completed. The installation can be performed quickly, the labor and time required for installation of the racks 12A and 12B can be saved, and the racks 12A and 12B can be installed in the laboratory animal breeding room 11 at a low cost. In the air conditioning system 10A and the air volume / end pressure adjusting method, the air volume exhausted from each branch duct 16B can be matched with the designed air volume corresponding to each laboratory animal breeding rack 12A, 12B, and each branch duct 16B. The terminal pressure of the air exhausted from the rack can be made to coincide with the designed terminal pressure corresponding to the racks 12A and 12B, and the air with the required air volume and terminal pressure can be exhausted from each rack 12A and 12B.

  After adjusting the air volume of a specific branch duct 16B (exhaust duct 16) connecting a specific laboratory animal breeding rack 12 by changing the damper opening, the rack 12 (equipment) is connected to the duct 16B, and the same When the next rack 12 is connected to the duct 16 in the main duct system, the rack 12 connected later breaks the air volume balance in the main duct system, and the air volume and end pressure of the duct 16 adjusted to the original design air volume fluctuate. Therefore, it is necessary to adjust the damper opening degree of the damper 17 again. However, in the air conditioning system 10A and the air volume / end pressure adjusting method, the air volume adjusting jigs 18A to 18D for simulating the design air volume and the design end pressure of the rack 12 are attached to all the ducts 16B, and laboratory animals are raised in the ducts 16B. After creating the same ventilation state as when the racks 12A to 12D are connected, the swirl angles of the swirl blades of all the dampers 17A to 17D are adjusted at once, so swirl of the swirl blades of all the dampers 17A to 17D in one step The angle can be set accurately, and even if the racks 12A to 12D are sequentially connected to the duct 16B, the air volume and the terminal pressure in the duct 16B do not vary, and the swirling blades of the dampers 17A to 17D are swung. There is no need to readjust the angle (damper opening).

  The air conditioning system 10A and the air volume / end pressure adjusting method will be connected to the duct 16B in the future by leaving the air volume adjusting jigs 18C and 18D attached to the branch duct 16B (exhaust duct 16) not connected to the equipment. The design air volume and the design end pressure required for the racks 12C and 12D to be connected in the future can be simulated in the duct 16B. Even if the air flow adjustment jigs 18C and 18D are removed from the duct 16B and the racks 12C and 12D are connected, the swirl angle (damper opening) of the swirl blades of the dampers 17C and 17D of each duct 16B is maintained. There is no need to adjust again, and the appropriate air volume and end pressure from each rack 12C, 12D using these ducts 16B. It is possible to continue the exhaust of air.

  FIG. 11 is a schematic diagram of an air conditioning system 10A when a laboratory animal breeding rack 12C is newly connected to the exhaust duct 16 that is not connected to the equipment. In the air conditioning system 10A, when the laboratory animal breeding rack 12C is newly connected to the branch duct 16B (exhaust duct 16) not connected to the device from the state of FIG. 1 where the air volume adjusting jigs 18C and 18D are attached, the damper 17A The air flow rate adjusting jig 18C is removed from the tip of the flexible duct 16D (branch duct 16B of the exhaust duct 16) without adjusting again the swirl angle (damper opening) of the swirl vanes 17D, and is indicated by an arrow in FIG. Thus, the exhaust duct 24 of the exhaust chamber 21 of the rack 12C is connected to the flexible duct 16D (device second connection means).

  The air conditioning system 10A and the air volume / end pressure adjustment method are such that the air volume adjusting jigs 18C, 18D are attached to the branch duct 16B (exhaust duct 16) not connected to the equipment to which the laboratory animal breeding racks 12C, 12D are not connected. The design air volume and the design required for the racks 12C and 12D to be connected in the future are the same as the state in which the racks 12C and 12D to be connected to the duct 16B in the future are connected. Since the end pressure is simulated in the duct 16B, the racks 12C and 12D can be immediately connected to the duct 16B after the air volume adjusting jigs 18C and 18D are removed from the duct 16B. The effort, time, and cost of adjusting the turning angle (damper opening) of the turning blades of the dampers 17A to 17D of the duct 16C again. While omitting the can be required rack 12C, the 12D immediately usable state.

  FIG. 12 is a schematic diagram of an air conditioning system 10B shown as another example, and FIG. 13 is a schematic diagram of the air conditioning system 10B shown in a state before the air volume adjusting jigs 18A to 18D are attached to the air supply duct 14. 14 is a schematic diagram of the air conditioning system 10B shown after the air volume adjusting jigs 18A to 18D are attached to the air supply duct 14, and FIG. 15 is an air supply duct to the clean benches 34A and 34B of the work chamber 33. It is the schematic of the air conditioning system 10B shown in the state before connecting 14. FIG. 13 to 15, clean benches 12 </ b> C and 12 </ b> D that are not installed in the work chamber 33 are indicated by two-dot chain lines. In FIG. 12, the air flow is indicated by arrows.

  FIG. 12 shows a state in which clean benches 34 </ b> A and 34 </ b> B (equipment) are installed in advance in the work room 33 (building) and the air conditioning system 10 </ b> B is installed in the work room 33. In FIG. 12, the air supply duct 14 (flexible duct 14D) is connected to the air supply ports 35 of the two clean benches 34A and 34B installed in the work room 33, and the remaining air supply duct 14 (flexible duct 14D). The clean benches 34 </ b> C and 34 </ b> D are not connected to each other, and the air volume adjusting jigs 18 </ b> C and 18 </ b> D are attached to the ducts 14. In FIG. 12, the clean benches 34C and 34D to be installed in the next step are indicated by two-dot chain lines.

  The air conditioning system 10 </ b> B exhausts air from an air supply fan 13 (air supply device) that supplies air into the work chamber 33, an air supply duct 14 connected to the air supply fan 13, and the work chamber 33. Exhaust fan 15 (exhaust device), exhaust duct 16 connected to the exhaust fan 15, a plurality of clean benches 34A to 34D installed in the working chamber 33, and the air supply duct 14 (flexible duct 14D) Air volume adjusting dampers 17A to 17D, and a plurality of air volume adjusting jigs 18A to 18D for simulating the design air volume and the design end pressure required individually according to the clean benches 34A to 34D. ing. In the air conditioning system 10B, the manometer 19 (differential pressure gauge) measures the differential pressure of each of the air volume adjusting jigs 18A to 18D (the differential pressure inside and outside the air flow path 28 of the air volume adjusting jigs 18A to 18D), and the dampers 17A to 17A. The damper opening of 17D is adjusted.

  The work chamber 33 has a predetermined volume of air-conditioned space surrounded by a ceiling, a floor, front and rear walls, and side walls, and is partitioned from the outside by the ceiling, the floor, and these walls. An exhaust port (not shown) through which air flows into the exhaust duct 16 is provided on the ceiling. In the air conditioner (not shown) installed outside the work chamber 33, the air is managed at a predetermined temperature and humidity, and clean air from which dust is removed by the air cleaner is supplied from the air supply duct 14 to the work chamber 33. Supplied to the room.

  In addition, although description of the clean benches 34A to 34D is omitted, the air supply air amount and the terminal pressure of the air supplied to the devices 34A to 34D differ depending on the air blowing amount and usage of the clean benches 34A to 34D. Therefore, in these clean benches 34A to 34D, the air volume and the terminal pressure of the air supplied from the air supply duct 14 are different from each other, and the design air volume and the design end pressure individually required according to the clean benches 34A to 34D are set in advance. It is determined as a required specification.

  The air supply duct 14 is formed of a main duct 14A and a plurality of branch ducts 14B branched from the main duct 14A. The main duct 14A is connected to an air supply fan 13 installed outside the room. Although four branch ducts 14B are illustrated in FIG. 12, the number of branch ducts 14B is not particularly limited, and the ducts 14B depend on the number of clean benches 34A to 34D installed in the work chamber 33 and the presence or absence of future installed equipment. The number of is determined.

  The branch duct 14B extending into the room is formed of a terminal duct 14C connected to the ceiling and a bellows-like flexible duct 14D extending from the terminal duct 14C into the room. The end ducts 14C are provided with dampers 17A to 17D for adjusting the air volume of air flowing therethrough. In the work chamber 33, two of the flexible ducts 14D are connected to the air supply ports 35 of the clean benches 34A and 34B, and the air volume adjustment jigs 18C and 18D are attached to the remaining two.

  As the dampers 17A to 17D, VD (Volume Damper) is used, but MD (Motor Damper) can also be used. The configuration of the dampers 17A to 17D is the same as that used in the system 10A of FIG. In the dampers 17 </ b> A to 17 </ b> D, the swirl vanes swirl in the duct 14 </ b> C by turning the lever or rotating the handle, and the duct 14 </ b> C (branch duct of the air supply duct 14) depending on the swivel swivel angle (damper opening). 14B) is adjusted.

  Since the air volume adjusting jig 18 is the same as that used in the system 10A of FIG. 1, the description thereof will be omitted with reference to FIGS. As in the system 10A of FIG. 1, a plurality of orifice plates 30 (disks) having different opening areas that can be fixed to the one end opening 25 of the air flow adjusting jig 18 are prepared, and the orifice plate 30 is selected. By attaching it to one end opening 25 of the air volume adjusting jig 18, the opening area (opening diameter) of the air volume adjusting jig 18 can be changed.

  The air volume adjusting jig 18 is adjusted so that the opening diameter (area of the opening) of the air flow path 28 matches the design air volume required by the clean benches 34 </ b> A to 34 </ b> D and the air volume of the air passing through the air flow path 28. The opening diameter of the air flow path 28 is adjusted to match the design end pressure corresponding to the clean benches 34 </ b> A to 34 </ b> D and the end pressure of the air flow path 28. Accordingly, the air volume adjusting jig 18 has the design air volume of the clean benches 34A to 34D and the air volume of the air flowing through the air flow path 28 and the end pressure of the air flow path 28 individually required according to the clean benches 34A to 34D and This is the same as the design end pressure, and simulates the design air volume and the design end pressure of the clean benches 34A to 34D.

  The design airflow of the clean benches 34A to 34D is, in other words, the design air supply airflow of the air flowing through the branch duct 14B of the air supply duct 14 to which the clean benches 34A to 34D are connected, and the design of the clean benches 34A to 34D. In other words, the end pressure is the design end pressure of the branch duct 14B of the duct 14 to which the clean benches 34A to 34D are connected. The design air volume and the design end pressure are different depending on the clean benches 34A to 34D, and the air volume flowing through the air flow path 28 of the air flow adjustment jig 18 and the end pressure of the air flow path 28 are determined based on the design air flow and In order to match the design end pressure, the opening diameter (opening area) of the air flow path 28 of the air volume adjusting jig 18 is changed. In order to change the opening diameter (opening area) of the air flow path 28 of the air flow adjusting jig 18, the air flow adjusting jig 18 having a different opening diameter (opening area) is attached to the duct 14D, or the air flow adjusting jig is used. In some cases, the orifice plate 30 is attached to the one end opening 25 of the tool 18.

In the air conditioning system 10 </ b> B (air volume / end pressure adjusting method), a plurality of orifice plates 30 having different opening areas are prepared depending on the design value of the air volume adjusting jig 18, so that the orifice plate 30 can be used for simulated ventilation. The orifice plate 30 selected accordingly is detachably attached to the one end opening 25 of the air flow adjusting jig 18 so that the air flow through the air flow path 28 of the air flow adjusting jig 18 and the end pressure of the air flow path 28 are changed. The design air flow and the design end pressure corresponding to the clean benches 34A to 34D can be matched. The opening diameter of the air flow adjusting jig 18 and the opening diameter of the orifice plate 30 are the same as those of the system 10A of FIG. 1 by the Darcy-Weiss-Bach equation (h = L / d · 1/2 · ρv ² ). Can be obtained using.

  In the air conditioning system 10B (air volume / end pressure adjusting method) of FIG. 12, the swirl of the swirl vanes of the dampers 17A, 17B installed in the end duct 14C (branch duct 14B of the air supply duct 14) connected to the clean benches 34A, 34B. The angle (damper opening) is adjusted. The swirl angle of the swirl vanes of the dampers 17A and 17B is such that the air volume flowing through the end duct 14C and the flexible duct 14D, the end pressure of the end duct 14C and the flexible duct 14D, the design air volume required by the clean benches 34A and 34B, and the design end. Adjustment has already been completed so that the pressure matches.

  Further, in the air conditioning system 10B (air volume / end pressure adjusting method) of FIG. 12, it is installed in the end duct 14C (the branch duct 14B of the air supply duct 14) continuous to the flexible duct 14D to which the air volume adjusting jigs 18C and 18D are attached. The turning angle (damper opening) of the turning blades of the dampers 17C and 17D is adjusted. The swirl angle of the swirl vanes of the dampers 17C and 17D is determined by the design air volume required by the clean benches 34C and 34D in which the air flow flowing through the end duct 14C and the flexible duct 14D and the end pressure of the end duct 14C and the flexible duct 14D are to be installed. And the adjustment has already been made so as to match the design end pressure (the design air volume of the clean benches 34C and 34D and the air volume adjusting jigs 18C and 18D simulating the design end pressure and the end pressure of the air volume adjustment jigs 18C and 18D). Completed.

  The procedure of the air volume / terminal pressure adjustment method in the air conditioning system 10B will be described based on FIGS. In the air volume / end pressure adjusting method, the air volume adjusting jig 18 and the manometer 19 are used. As shown in FIG. 13, clean benches 34 </ b> A to 34 </ b> D are not installed in the room in the work chamber 33 before the air volume / end pressure adjusting method is performed, and the air supply duct 14 connected to the air supply fan 13 is not installed. A terminal duct 14C and a flexible duct 14D extend into the room.

  In the working chamber 33 in the state of FIG. 13, before connecting the clean benches 34A to 34D to the flexible duct 14D, as shown in FIG. 14, the air volume adjusting jigs 18A to 18D are individually attached to the distal ends of the flexible ducts 14D. (Jig mounting means). By attaching the air volume adjusting jigs 18A to 18D to each duct 14D, the same state as the state where the clean benches 34A to 34D having different design air volumes and design end pressures are connected to the respective ducts 14D (passing air volume and pressure loss). Is made.

After the air volume adjusting jigs 18 </ b> A to 18 </ b> D are attached to each flexible duct 14 </ b> D (the branch duct 14 </ b> B of the air supply duct 14), the manometer 19 is connected to the first exposed portion 29 </ b> A of the pitot tube 29 of the air volume adjusting jig 18 via the hose 36. (Differential pressure gauge) is connected, and the manometer 19 measures the differential pressure of the air inside and outside the air flow path 28 of the air volume adjusting jigs 18A to 18D (differential pressure measuring means) (supported in FIG. 9). The air flow path 28 is calculated from the differential pressure inside and outside the air flow path 28 of each of the air flow rate adjusting jigs 18A to 18D, the cross-sectional area, and the length of the cylinder by using the Darcy-Weiss-Bach equation. The air volume of the air flowing through the air flow path 28 is determined from the air volume, and the differential pressure condition for each of the air volume adjusting jigs 18A to 18D is determined. When measuring the differential pressure between the air inside and outside the air flow path 28 of the air flow adjusting jigs 18 </ b> A to 18 </ b> D, the air supply fan 13 and the exhaust fan 15 are operated, and the set flow rate (m ³ / h) via the air supply duct 14. Is supplied to the working chamber 33, and air of a set flow rate (m ³ / h) is exhausted to the outside of the working chamber 33 through the exhaust ducts 16.

  While checking the differential pressure displayed on the manometer 19, based on the measured differential pressure, the levers of the dampers 17A to 17D are turned, or the dampers 17A to 17D are rotated by rotating the handles of the dampers 17A to 17D. The swirl angle (damper opening) of the swirl vane is adjusted (opening adjusting means). By adjusting the swirl angle of the swirl vanes of the dampers 17A to 17D, the differential pressure displayed on the manometer 19 becomes the design differential pressure (design end pressure) of the air inside and outside the air flow path 28 of the air volume adjusting jigs 18A to 18D. (The measured differential pressure and the design end pressure match), or the differential pressure displayed on the manometer 19 is the differential pressure of the air inside and outside the air flow path 28 of the air volume adjusting jigs 18A to 18D (design end pressure). ) (The measured differential pressure is within the design end pressure range), the turning angle (damper opening) of the swirling blades of the dampers 17A to 17D at that time is determined as appropriate for the dampers 17A to 17D. The turning angle of the turning blade is fixed to the turning angle.

  By setting the swirl angle of the swirl vanes of the dampers 17A to 17D to an appropriate swivel angle, the air volume of the air flowing through each of the air volume adjusting jigs 18A to 18D matches the design air volume required for the clean benches 34A to 34D. The differential pressure (terminal pressure) between the air inside and outside the air volume adjusting jigs 18A to 18D matches the design terminal pressure required for the clean benches 34A to 34D. Accordingly, the air flow adjustment jigs 18A to 18D are actually connected to the branch duct 14B (the air supply duct 14), and the clean bench 34A is connected to the duct 14B even though the clean benches 34A to 34D are not connected to the duct 14B. It is possible to create the same ventilation state as that to which 34D is connected.

  The manometer 19 is connected to all the air volume adjusting jigs 18A to 18D, and the swirl angles (damper opening degrees) of the swirling blades of the dampers 17A to 17D are appropriately adjusted while measuring the differential pressures of the air volume adjusting jigs 18A to 18D. After the adjustment, the air flow adjusting jigs 18A and 18B are removed from the flexible duct 14D (air supply duct 14) where the clean benches 34A and 34B are to be installed, and the clean bench 34A is attached to the duct 14D as indicated by an arrow in FIG. , 34B are connected (equipment first connection means). The clean benches 34C and 34D are scheduled to be connected in the future, and the air flow adjustment jigs 18C and 18D are maintained in the duct 14D not connected to the clean benches 34C and 34D at present (the connection is maintained). means).

  After adjusting the turning angle (damper opening) of the swirling blades of the dampers 17A to 17D to an appropriate one, the air volume adjusting jigs 18C and 18D are left attached to the flexible duct 14D (air supply duct 14) not connected to the device. Thus, the same state as that in which the clean benches 34C and 34D are connected to the duct 14D can be obtained. In the clean benches 34A and 34B connected to the duct 14D, air is supplied into the interior via the air supply duct 14, and in the duct 14D in which the air volume adjusting jigs 18C and 18D are fixed, the air volume adjusting jig 18C. , 18D through the air flow path 28, the air is supplied into the working chamber 33. In the branch duct 14B, which is not connected to the device, in which the air volume adjusting jigs 18C and 18D are fixed, the air volume adjusting jigs 18C and 18D supply air having the same air volume as the design air volume of the clean benches 34C and 34D. The air having the same end pressure as the designed end pressure of the clean benches 34C and 34D is supplied (air supply means). Note that the air in the working chamber 33 is exhausted to the outside by the exhaust duct 16 (exhaust fan 15).

  The dimension L1 in one direction of the air volume adjusting jig 18 is in the range of 100 to 150 mm. When maintaining the air volume adjusting jigs 18C and 18D attached to the duct 14D not connected to the equipment to which the clean benches 34C and 34D are not connected, the unidirectional dimension L1 of the air volume adjusting jigs 18C and 18D is within the above range. Therefore, the air volume adjusting jigs 18C and 18D attached to the duct 14D do not obstruct the operator's work, and the work can be smoothly performed in the vicinity of the duct 14D not connected to the equipment.

  The air conditioning system 10B and the air volume / end pressure adjusting method are such that the air flow adjusting jigs 18A to 18D are connected before the clean benches 34A to 34D (devices) are connected to the flexible ducts 14D (the branch ducts 14B of the air supply duct 14). 18D (air volume adjustment jig) is individually attached to each duct 14D, and based on the differential pressure of the air inside and outside the air flow path 28 of the air volume adjustment jigs 18A to 18D measured by the manometer 19 (measuring instrument), The air volume of the air flowing through the ducts 14B matches the design air volume corresponding to the clean benches 34A to 34D, and the end pressure of the ducts 14B matches the design end pressure required by the clean benches 34A to 34D. Because the turning angle (damper opening) of the turning blades of the dampers 17A to 17D is adjusted. The clean benches 34A to 34D are actually connected to the ducts 14B by using the air volume adjusting jigs 18A to 18D that simulate the design air volume and the design end pressure individually required according to the clean benches 34A to 34D. Even if not, the swirl angle of the swirl vane can be adjusted in the same ventilation state as when the clean benches 34A to 34D are connected to each duct 14B.

  In the air conditioning system 10B and the air volume / end pressure adjusting method, the clean air benches 34A to 34D are connected to the duct 14B by connecting the air volume adjusting jigs 18A to 18D to the branch duct 14B (air supply duct 14). The same ventilation state can be created, and the setting of the swirl angle (damper opening) of the swirl vanes of all the dampers 17A to 17D is completed by adjustment in one step when the air volume adjusting jigs 18A to 18D are connected. be able to. The air conditioning system 10B and the air volume / end pressure adjustment method need only adjust the swirl angle (damper opening) of the swirl vanes only when the air volume adjusting jigs 18A to 18D are connected, and then the branch duct 14B (air supply duct 14). ), Even if the clean benches 34C and 34D are connected, it is not necessary to adjust the turning angle again, the desired clean benches 34C and 34D can be easily replaced, and the trouble of adjusting the turning angle again is eliminated. And save time.

  In the air conditioning system 10B and the air volume / end pressure adjusting method, when the air volume adjusting jigs 18A to 18D are connected, the swirl angle (damper opening) of the swirling blades of the dampers 17A to 17D is adjusted, and then the branch ducts 14B ( By connecting the clean benches 34A and 34B to the air supply duct 14), the work chamber 33 in which various clean benches 34A and 34B are installed is completed, and the clean benches 34A and 34B can be quickly installed in the work chamber 33. Thus, the labor and time required for installing the clean benches 34A and 34B can be saved, and the clean benches 34A and 34B can be installed in the work room 33 at low cost. In the air conditioning system 10B and the air volume / end pressure adjusting method, the air volume supplied from each branch duct 14B can be matched with the design air volume corresponding to each clean bench 34A, 34B, and supplied from each branch duct 14B. The end pressure of the air to be aired can be made to coincide with the designed end pressure pressure corresponding to each clean bench 34A, 34B, and the air of the required air volume and end pressure can be supplied to each clean bench 34A, 34B. it can.

  After adjusting the air volume of a specific branch duct 14B (air supply duct 14) connecting a specific clean bench by changing the damper opening, the clean bench (equipment) is connected to the duct 14B, and the same basic duct system When the next clean bench is connected to the duct 14B, the later connected clean bench breaks the air volume balance in the basic duct system, and the air volume and the terminal pressure of the duct 14B adjusted to the original design air volume will fluctuate. Therefore, it is necessary to adjust the damper opening degree of the damper 17 again. However, in this air conditioning system 10B and the air volume / end pressure adjusting method, the air volume adjusting jigs 18A to 18D that simulate the design air volume and the design end pressure are attached to all the ducts 14B, and the clean benches 34A to 34D are connected to the ducts 14D. After the same ventilation state is made, the turning angles of the swirling blades of all the dampers 17A to 17D are adjusted at a time, so that the swirling angles of the swirling blades of all the dampers 17A to 17D are accurately set in one step. In addition, even if the clean benches 34A to 34D are connected in order to the duct 14B, the air volume and the terminal pressure in the duct 14B do not vary, and the swirl angle of the swirl vanes of the dampers 17A to 17D (damper opening) ) Readjustment is not necessary.

  The air conditioning system 10B and the air volume / end pressure adjusting method will be connected to the duct 14B in the future by leaving the air volume adjusting jigs 18C, 18D attached to the branch duct 14B (air supply duct 14) not connected to the equipment. The air flow can be made the same as the state in which the planned clean benches 34C and 34D are connected, and the design air volume and the design end pressure required for the clean benches 34C and 34D to be connected in the future are simulated in the duct 14B. Even if the air flow adjusting jigs 18C and 18D are removed from the duct 14B and the clean benches 34C and 34D are connected, the swirl angle (damper opening) of the swirl vanes of the dampers 17C and 17D of each duct 14B is maintained. There is no need to adjust again, and the duct 14B is used to suit each clean bench 34C, 34D. The air supply of the air volume of air and distal pressure can be continued such.

  FIG. 16 is a schematic diagram of an air conditioning system 10B when a clean bench 34C is newly connected to the air supply duct 14 that is not connected to the equipment. In the air conditioning system 10B, when the clean bench 34C is newly connected to the branch duct 14B (air supply duct 14) not connected to the device from the state of FIG. 12 where the air volume adjusting jigs 18C and 18D are attached, the dampers 17A to 17D. The air flow adjustment jig 18C is removed from the tip of the flexible duct 14D (branch duct 14B of the air supply duct 14) without adjusting the swirl angle (damper opening) of the swirl vane as shown by an arrow in FIG. In addition, the air supply port 35 of the clean bench 34C is connected to the flexible duct 14D (device second connection means).

The air conditioning system 10B and the air volume / end pressure adjusting method are in a state where the air volume adjusting jigs 18C, 18D are attached to the branch duct 14B (air supply duct 14) not connected to the equipment to which the clean benches 34C, 34D are not connected. The air flow is the same as the state in which the clean benches 34C and 34D to be connected to the duct 14B in the future are connected, and the design air volume required for the clean benches 34C and 34D to be connected in the future and Since the design end pressure is simulated in the duct 14B, the clean benches 34C and 34D can be immediately connected to the duct 14B after the air flow adjusting jigs 18C and 18D are removed from the duct 14B. Adjust the turning angle (damper opening) of the turning blades of the dampers 17A to 17D of each duct 14B again. Labor and time to, while eliminating the cost, can be required clean bench 34C, the 34D immediately usable state.

10A air conditioning system (exhaust system from equipment)
10B Air conditioning system (system for supplying air to equipment)
11 Laboratory animal breeding room (building)
12 Laboratory animal breeding rack (equipment)
12A-12D Laboratory animal breeding rack 13 Air supply fan (air supply device)
14 Air supply duct 14B Branch duct 15 Exhaust fan (exhaust device)
16 Exhaust duct 16B Branch duct 17A-17D Air volume adjustment damper 18 Air volume adjustment jig 18A-18D Air volume adjustment jig 19 Manometer (differential pressure measuring instrument)
21 Exhaust chamber 25 One end opening 26 Other end opening 27 Peripheral wall 28 Air flow path 29 Pitot tube 30 Orifice plate 31 Opening 33 Work chamber (building)
34A-34D Clean bench (equipment)

Claims (21)

A device that requires exhaust; an exhaust duct that is detachably connected to the device; and a damper that is installed in the exhaust duct and is capable of adjusting the air volume of the air flowing through the exhaust duct. In an air conditioning system that exhausts air from the device,
The air conditioning system is detachably attached to the exhaust duct, and an air volume adjusting jig that simulates a design air volume and a design end pressure that are individually required according to the equipment, and an air pressure that flows through the air volume adjusting jig A measuring instrument for measuring
In the air conditioning system, before the device is connected to the exhaust duct, the air volume adjustment jig is attached to the exhaust duct, and the differential pressure of the air inside and outside the air volume adjustment jig is measured by the measuring instrument. In addition, the damper opening degree of the damper is adjusted based on the differential pressure measured by the measuring device, the air volume of the air flowing through the exhaust duct matches the design air volume corresponding to the device, and the exhaust duct end An air conditioning system, wherein a damper opening degree of the damper is adjusted in advance so that a pressure difference between inside and outside air matches a design end pressure corresponding to the device.   2. The air conditioning system according to claim 1, wherein in the air conditioning system, the device is connected to the exhaust duct after the damper opening degree of the damper is adjusted using the air volume adjusting jig and the measuring device.   In the air conditioning system, the devices are various types of devices, the devices are connected to the plurality of exhaust ducts, the dampers are individually installed in the exhaust ducts, and the air volume adjusting jig and the measuring device are provided. After the damper opening degree of the damper is adjusted by using the exhaust air that is not connected to the equipment while the air volume adjusting jig is attached to the exhaust duct that is not connected to the equipment. Air having the same air volume as that of the designed air volume is exhausted from the exhaust duct via the air volume adjusting jig attached to the duct, and the same as the designed end pressure is exhausted from the exhaust duct via the air volume adjusting jig. The air conditioning system according to claim 1 or claim 2, wherein the pressure air is exhausted.   In the air conditioning system, when the device is connected to the exhaust duct that is not connected to the device in the state where the air flow adjustment jig is attached, the damper duct is not adjusted again, and the exhaust duct is used to adjust the damper opening degree. The air conditioning system according to claim 3, wherein an air flow adjusting jig is removed and the device is connected to the exhaust duct. A device that requires air supply; an air supply duct that is detachably connected to the device; and a damper that is installed in the air supply duct and capable of adjusting the amount of air flowing through the air supply duct. In an air conditioning system that supplies air to the equipment using a duct,
The air conditioning system is detachably attached to the air supply duct, and an air volume adjusting jig that simulates a design air volume and a design end pressure that are individually required according to the equipment, and an air flow that flows through the air volume adjusting jig A measuring instrument for measuring pressure,
In the air conditioning system, before the device is connected to the air supply duct, the air flow adjustment jig is attached to the air supply duct, and the differential pressure between the air inside and outside the air flow adjustment jig is measured by the measuring device. In addition, the damper opening degree of the damper is adjusted based on the differential pressure measured by the measuring instrument, and the air volume flowing through the air supply duct matches the design air volume corresponding to the device, and the supply air An air conditioning system in which a damper opening degree of the damper is adjusted in advance so that a pressure difference between air inside and outside the air duct end coincides with a design end pressure corresponding to the device.   6. The air conditioning system according to claim 5, wherein in the air conditioning system, the device is connected to the air supply duct after the damper opening degree of the damper is adjusted using the air volume adjusting jig and the measuring device. .   In the air conditioning system, the devices are a plurality of various devices, the plurality of air supply ducts are connected to the devices, the dampers are individually installed in the air supply ducts, the air volume adjusting jig, and the measuring device. After the damper opening degree of the damper is adjusted using the above, the air volume adjustment jig is maintained with respect to the air supply duct not connected to the device and the device not connected. Air having the same air volume as that of the designed air volume is supplied from the air supply duct via the air volume adjusting jig attached to the connected air supply duct, and from the air supply duct via the air volume adjusting jig. The air conditioning system according to claim 5 or 6, wherein air having the same pressure as the designed end pressure is supplied.   In the air conditioning system, when the device is connected to the air supply duct that is not connected to the device in the state where the air flow adjustment jig is attached, the air supply duct is not adjusted without adjusting the damper opening degree of the damper again. The air conditioning system according to claim 7, wherein the air flow adjusting jig is removed from the air supply duct, and the device is connected to the air supply duct. A device that needs to be exhausted; an exhaust duct that is detachably connected to the device; and a damper that is installed in the exhaust duct and that can adjust the amount of air flowing through the exhaust duct, and the damper opening of the damper In the air volume / end pressure adjusting method for adjusting the air volume and the terminal pressure of the air exhausted from the device through the exhaust duct by adjusting
The air volume / end pressure adjusting method is an air volume adjusting jig that simulates a design air volume and a design end pressure individually required according to the device, and a measuring instrument that measures the pressure of the air flowing through the air volume adjusting jig. Before connecting the device to the exhaust duct, a jig mounting means for attaching the air volume adjusting jig to the exhaust duct, and a differential pressure between the air inside and outside the air volume adjusting jig attached to the exhaust duct. Based on the differential pressure measuring means for measuring using the measuring device and the differential pressure measured by the differential pressure measuring means, the air volume of the air flowing through the air volume adjusting jig matches the design air volume corresponding to the device. And an opening degree adjusting means for adjusting the damper opening degree of the damper so that the differential pressure between the air inside and outside the air volume adjusting jig matches the designed end pressure. How to adjust .   10. The air volume / end pressure adjustment method according to claim 9, wherein the air volume / end pressure adjusting method includes a device first connection unit that connects the device to the exhaust duct after the damper opening degree of the damper is adjusted by the opening degree adjusting unit. Terminal pressure adjustment method.   In the air volume / end pressure adjusting method, the equipment is a plurality of them, the exhaust ducts are connected to the equipment, and the dampers are individually installed in the exhaust ducts. However, after adjusting the damper opening of the damper by the opening adjustment means, connection maintaining means for maintaining the state where the air volume adjustment jig is attached to the exhaust duct not connected to the equipment, Exhaust air having the same air volume as the designed air volume from the exhaust duct via an air volume adjusting jig attached to the exhaust duct not connected to the equipment, and the design from the exhaust duct via the air volume adjusting jig. The air volume / end pressure adjusting method according to claim 9 or 10, further comprising air exhaust means for exhausting air having the same pressure as the end pressure.   When the air volume / terminal pressure adjustment method connects the equipment to the exhaust duct not connected to the equipment in which the air volume adjustment jig is attached by the connection maintaining means, the damper opening degree of these dampers is adjusted again. The air volume / end pressure adjusting method according to claim 11, further comprising: a device second connecting means for removing the air flow adjusting jig from the exhaust duct and connecting the device to the exhaust duct without performing the operation. A device that requires air supply; an air supply duct that is detachably connected to the device; and a damper that is installed in the air supply duct and that can adjust the amount of air flowing through the air supply duct. In the air volume / end pressure adjusting method for adjusting the air volume and the terminal pressure of the air supplied to the device through the air supply duct by adjusting the damper opening of
The air volume / end pressure adjusting method is an air volume adjusting jig that simulates a design air volume and a design end pressure individually required according to the device, and a measuring instrument that measures the pressure of the air flowing through the air volume adjusting jig. Before connecting the device to the air supply duct, jig attachment means for attaching the air flow adjustment jig to the air supply duct, and air inside and outside the air flow adjustment jig attached to the air supply duct. A differential pressure measuring means for measuring the differential pressure using the measuring device, and a design in which the air volume of the air flowing through the air volume adjusting jig corresponds to the device based on the differential pressure measured by the differential pressure measuring means. The air volume further includes an opening degree adjusting means for adjusting a damper opening degree of the damper so that the differential pressure between the air inside and outside the air volume adjusting jig matches the design end pressure.・ Terminal pressure adjustment .   14. The air volume according to claim 13, wherein the air volume / end pressure adjusting method includes a device first connection unit that connects the device to the air supply duct after the damper opening degree of the damper is adjusted by the opening degree adjusting unit.・ End pressure adjustment method.   In the air volume / end pressure adjusting method, the equipment is a plurality of them, a plurality of the air supply ducts are connected to the equipment, and the dampers are individually installed in the air supply ducts. After the adjustment method adjusts the damper opening degree of the damper by the opening degree adjusting means, the connection maintenance for maintaining the state in which the air volume adjustment jig is attached to the air supply duct not connected to the equipment and not connected to the equipment And air of the same air volume as the design air volume is supplied from the air supply duct via the air volume adjustment jig attached to the air supply duct not connected to the device, and via the air volume adjustment jig The air volume / end pressure adjusting method according to claim 9 or 10, further comprising air supply means for supplying air having the same pressure as the designed end pressure from the supply duct.   When the air volume / end pressure adjusting method connects the equipment to the air supply duct not connected to the equipment in which the air volume adjusting jig is attached by the connection maintaining means, the damper opening degree of the dampers is set again. The air volume / end pressure adjusting method according to claim 15, further comprising device second connection means for removing the air flow adjusting jig from the air supply duct without adjusting and connecting the device to the air supply duct.   The air volume adjusting jig extends in one direction and has one end opening and the other end opening; an air flow path extending in one direction between the openings; and an air flow path installed on the peripheral wall from the outer peripheral surface of the peripheral wall A differential pressure gauge that is formed from a Pitot tube extending to the air flow path, and the measuring instrument is detachably connected to a Pitot pipe exposed from the outer peripheral surface of the peripheral wall to measure a differential pressure inside and outside the air flow path In the air volume / end pressure adjusting method, the air volume of the air flowing through the air flow path is obtained from a differential pressure inside and outside the air flow path, a cross-sectional area, and a circular pipe length that match the design air flow and the design end pressure. Item 17. The air volume / terminal pressure adjustment method according to items 9 to 16.   The opening area of the air flow path is adjusted to match the design air volume corresponding to the device and the air flow rate of air passing through the air flow path, and the design end pressure and the air flow path corresponding to the device 18. The air volume / end pressure adjusting method according to claim 17, wherein the air pressure / terminal pressure adjusting method is adjusted so as to match the internal / external differential pressure.   An orifice plate capable of changing the area of the opening is detachably attached to one of the openings of the air volume adjusting jig. In the air volume / end pressure adjusting method, the opening of the opening is adjusted by the orifice plate. By adjusting the area, the design air volume corresponding to the device and the air flow rate through the air flow path are matched, and the design end pressure corresponding to the device and the differential pressure inside and outside the air flow path are set. The air volume / end pressure adjusting method according to claim 17 or 18, wherein the air flow and the terminal pressure are matched.   The orifice plate has an opening of a predetermined area that opens at a central portion thereof, and a plurality of the orifice plates having openings of different areas are prepared in the air volume / end pressure adjusting method. Air volume and terminal pressure adjustment method. 21. The air volume / end pressure adjusting method according to claim 17, wherein a unidirectional dimension between one end opening and the other end opening of the air volume adjusting jig is in a range of 100 to 150 mm.

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