JPH10110981A - Blower control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive not to cause a malfunction in which actuation of a sub-blower becomes disabled by a method wherein after starting a control of enerization of the sub-blower, an opening operation of an opening or closing damper is started either when a set delay time elapses or when a detected inner pressure in an air passage at a downstream side of the sub-blower is increased from a set initial value to a set stable value. SOLUTION: A valve member 22 of an opening or closing damper Ds and an air feeding blower 9 of a sub-blower Fs are arranged in sequence from an upstream side in a flow dividing air passage Rs formed by a connected air passage 5 and an air feeding passage 10. When an actuation command of the sub-blower Fs9 is given under the operation state of the main blower 3, air feeding pressure control devices 28, 19 of the system and a control device 24 of specified air amount device for a system inlet may start an actuation control for the sub-blower for automatically adjusting an air blowing amount of the sub-blower Fs9 in such a way that an inner pressure Ps in a down-stream side air passage is gradually increased from a set initial value at a specified speed on the basis of a detected information of the inner pressure Ps of the down-stream side air passage of the sub-blower Fs9 prior to an opening operation of the opening or closing damper Ds 22 and then after the set delay time elapses, an opening operation of the opening or closing damper Ds 22 is started.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower control system, and more particularly, to an opening / closing damper and a sub-blower in order from an upstream side in a branch flow path from a main wind path for guiding discharge air of a main blower. In response to a start command of the sub-blower given under the operation state of the main blower, an opening operation of the opening / closing damper, and, based on detection information of an air passage internal pressure on the downstream side of the sub-blower, a downstream air passage internal pressure thereof. The present invention relates to a blower control system provided with control means for executing a sub-blower activation control for automatically adjusting the air flow rate of the sub-blower so as to gradually increase at a predetermined speed from a set initial value.

Conversely, an opening / closing damper and a sub-blower are sequentially interposed from a downstream side in a merged air passage to a main air passage for guiding the intake air of the main blower, and the operating condition of the main blower is reduced. Based on the opening operation of the open / close damper and the detection information of the air passage internal pressure on the upstream side of the sub blower, the upstream air passage internal pressure is set to a predetermined speed from a set initial value in accordance with the start command of the sub blower given by The present invention relates to a blower control system provided with control means for executing a sub-blower activation control for automatically adjusting the blowing amount of the sub-blower so as to gradually decrease the flow rate.

[0003]

2. Description of the Related Art Conventionally, in this type of blower control system (see FIGS. 8 and 9), a pressure sensor 18 detects a branch airflow Rs from a main airflow passage 4 for guiding the discharge air of a main blower 3. On the basis of the internal pressure ps on the downstream side of the auxiliary blower Fs, the auxiliary blower Fs is configured to gradually increase the downstream internal pressure ps at a predetermined speed from a set initial value smsp.
The control means X starts the opening operation of the opening / closing damper Ds at the same time as the start of the sub-blower start control for automatically adjusting the amount of air blown by the opening / closing damper Ds. Has been proposed to gradually increase from a fully closed position to a predetermined opening at a predetermined opening change speed so as to synchronize with the gradual increase in output of the sub-blower Fs by the above-described sub-blower start control (Japanese Patent Application Hei 2-
262345).

[0004] That is, in the system connected to the main air passage 4 via the above-mentioned branch air passage Rs, the side of the main air passage 4 in the main blower operating state with the activation of the sub-blower Fs and the opening of the opening / closing damper Ds. As described above, the gradual rise of the sub-blower Fs and the gradual rise and fall of the opening / closing damper Ds synchronized therewith, as described above, indicate that the system internal pressure in the connection system suddenly changes due to the influence of the wind path internal pressure po. This is prevented by the opening operation.

[0005]

However, in the above conventional system, the opening and closing damper Ds
When the opening operation of the opening / closing damper Ds is started, depending on the degree of the influence of the air passage internal pressure po on the side of the main air passage 4 extending downstream of the sub-blower Fs, the sub-blower F
In some cases, the activation of s was hindered.

In other words, when the opening and closing damper Ds starts to be opened, the effect of the air passage internal pressure po on the side of the main air passage 4 extending downstream of the sub-blower Fs is large.
May be higher than the set initial value smps in the sub-blower start-up control, and in such a case, the control means X
The sub-blower Fs is still in the initial stage of startup, although the blower volume is still in a small state, the sub-blower Fs gradually reduces the air passage internal pressure ps downstream of the sub-blower Fs from the set initial value smps. In practice, the control operation is performed in such a way that the amount of air blown from the sub-blower Fs is reduced, and as a result, the sub-blower Fs is stopped and the sub-blower Fs is stopped.
There was a case where the inconvenience that startup of the program could not be performed occurred.

This problem is also caused by the opening / closing damper De in the merging air passage Re to the main air passage 51 for guiding the intake air of the main blower 50.
And the auxiliary blower Fe are sequentially interposed from the downstream side (FIG. 5).
), Based on the air passage internal pressure pe on the upstream side of the auxiliary blower Fe detected by the pressure sensor 53, the upstream air passage internal pressure pe is gradually decreased from the set initial value smpe at a predetermined speed. With the start of the sub-blower start control for automatically adjusting the blowing volume of the blower Fe, the opening / closing damper D
e is started by the control means Y, and in the opening operation of the opening / closing damper De by the control means Y, the opening degree of the opening / closing damper De is gradually increased by the above-described auxiliary fan starting control. The same applies to the case where the opening degree is gradually increased from the fully closed state to the predetermined opening degree at a predetermined opening change rate so as to synchronize with.

[0008] In view of the above circumstances, a main object of the present invention is to effectively solve the above-mentioned problems by rational opening / closing damper control.

[0009]

[Means for Solving the Problems]

[Invention of claim 1] In the invention of claim 1, when a start command of the sub-blower is given, the opening / closing damper located on the upstream side of the sub-blower in the branch wind path from the main wind path is operated. Prior to the above, based on the detection information of the air passage internal pressure on the downstream side of the sub-blower, the blowing amount of the sub-blower is automatically adjusted so as to gradually increase the downstream air passage internal pressure at a predetermined speed from a set initial value. The control unit starts the sub-blower activation control.

After the start of the sub-blower start control,
When the set delay time has elapsed, or when the detected air passage internal pressure on the downstream side of the sub-blower has risen from a set initial value to a set stable value, the control unit starts the opening operation of the open / close damper.

That is, by starting the opening / closing damper with a delay with respect to the start of the sub-blower start control, the opening operation of the opening / closing damper is started.
In the state where the internal pressure of the air passage on the side of the main air passage in the operation state of the main air blower affects the downstream side of the auxiliary air blower, and the internal pressure of the air passage downstream of the auxiliary air blower is unlikely to increase. Due to the influence, the pressure in the air passage downstream of the sub-blower changes slightly to the rising side due to the influence, and the control means adjusts the blowing amount of the sub-blower to the slightly lower side in controlling the activation of the sub-blower. Even if this is the case, the internal pressure of the air passage downstream of the sub-blower should be raised until the sub-blower does not stop, so that the sub-blower performed based on the detection of the internal pressure of the air passage downstream of the sub-blower is detected. In the fan start-up control, the above-described inconvenience that the start-up of the sub-blower is disabled due to the influence of the air passage pressure on the side of the main air passage in the main blower operating state is prevented.

Therefore, according to the first aspect of the present invention, the internal pressure of the main air passage when the main blower is in the operating state is high. Even in the case where the temperature is relatively low, the auxiliary blower can be reliably started, and in this respect, the system performance and the reliability can be improved.

[0013] According to the second aspect of the present invention, the start-up control of the sub-blower in the branch flow path from the main wind path (wind at the downstream side of the sub-blower) in response to the start command of the sub-blower. Based on the detection information of the in-path pressure, a control to automatically adjust the blowing amount of the sub-blower so as to gradually increase the downstream-side flow path internal pressure at a predetermined speed from the set initial value), and the upstream side of the sub-blower. In order to cause the control means to open the opening / closing damper located at the position, the pressure in the air passage between the opening / closing damper and the sub-blower is detected by the pressure detecting means, and based on this detection information, the pressure between the opening / closing damper and the sub-blower is determined. The opening degree of the opening / closing damper is automatically adjusted by the control means so as to maintain the air passage internal pressure at the set air passage internal pressure.

In other words, by controlling the opening degree of the opening / closing damper based on the detection of the internal pressure of the air passage and maintaining the internal pressure of the air passage between the opening / closing damper and the auxiliary air blower at the set internal air pressure, the auxiliary blower is still activated. Despite being in the initial state, the air pressure in the main air path in the main air blower operating state affects the downstream side of the auxiliary air blower, so that the air pressure in the air path downstream of the auxiliary air blower is In the sub-blower start control performed based on the detection of the air pressure in the downstream side of the sub-blower, it is possible to prevent the main wind in the main blower operating state from being higher than the set initial value in the start-up control. It is possible to accurately start the sub-blower while avoiding the influence of the internal pressure of the air path on the road side.

Therefore, according to the second aspect of the present invention, similarly to the first aspect of the present invention, when the main blower is in an operating state, the air pressure in the main air path is high. Even when the set initial value in the sub-blower start-up control is relatively low, the sub-blower can be reliably started, and in this regard, the system performance and reliability can be improved.

According to the third aspect of the present invention, when the start command of the sub-blower is given, the opening / closing damper located downstream of the sub-blower in the merging air passage to the main air passage. Prior to the opening operation of the air blower, based on the detection information of the air passage internal pressure on the upstream side of the sub air blower, the blowing amount of the auxiliary air blower is gradually reduced at a predetermined speed from the set initial value at a predetermined speed. The control unit starts the sub-blower activation control for automatic adjustment.

After the start of the sub-blower start control,
When the set delay time has elapsed, or when the detected air passage internal pressure on the upstream side of the sub-blower has decreased from the set initial value to the set stable value, the control unit starts the opening operation of the open / close damper.

In other words, by starting the opening / closing damper with a delay with respect to the start of the sub-blower start control, the opening operation of the opening / closing damper is started.
A state in which the internal pressure of the air passage on the side of the main air duct in the operation state of the main air blower affects the upstream side of the auxiliary air blower and the internal pressure of the air path on the upstream side of the auxiliary air blower is unlikely to change to a lower side. Due to the influence, the pressure in the air passage on the upstream side of the sub-blower changes slightly to the lower side, and the control means adjusts the blowing amount of the sub-blower to the lower side on the control of the start of the sub-blower. Even so, the pressure in the air passage upstream of the sub-blower is raised to a lower side until the sub-blower does not stop, so that
In the sub-blower start control performed based on the detection of the internal pressure of the air path on the upstream side of the sub-blower, the above-described inconvenience such that the start of the sub-blower becomes impossible due to the influence of the internal pressure of the main air path in the main blower operating state is considered. To prevent.

Therefore, according to the third aspect of the present invention, when the main blower is in the operating state, the air passage internal pressure of the main air passage is low. Even in a case where the temperature is relatively high, the auxiliary blower can be reliably started, and in this respect, the system performance and the reliability can be improved.

[Invention of Claim 4] In the invention of Claim 4, according to the start command of the sub-blower, the start-up control of the sub-blower in the merged air duct with the main air duct (wind at the upstream side of the sub-blower). Based on the detection information of the passage pressure, a control to automatically adjust the amount of air blown by the sub-blower so as to gradually decrease the upstream air passage pressure at a predetermined speed from the set initial value), and the downstream side of the sub-blower. In order to cause the control means to open the opening / closing damper located at the position, the pressure in the air passage between the opening / closing damper and the sub-blower is detected by the pressure detecting means, and based on this detection information, the pressure between the opening / closing damper and the sub-blower is determined. The opening degree of the opening / closing damper is automatically adjusted by the control means so as to maintain the air passage internal pressure at the set air passage internal pressure.

That is, by controlling the opening and closing of the opening and closing damper based on the detection of the internal pressure of the air passage and maintaining the internal pressure of the air passage between the opening and closing damper and the auxiliary air blower at the set internal air pressure, the auxiliary air blower is still activated. Despite being in the initial state, the air pressure in the main air duct in the operation state of the main air blower affects the upstream side of the sub air blower. It is prevented that the initial value becomes lower than the set initial value in the start-up control. Thereby, in the sub-blower start-up control performed based on the detection of the internal pressure of the air path on the upstream side of the sub-blower, the main wind in the main blower operating state is It is possible to accurately start the sub-blower while avoiding the influence of the internal pressure of the air path on the road side.

Therefore, according to the fourth aspect of the present invention, similarly to the third aspect of the present invention, the air pressure in the main air passage when the main blower is in the operating state is low. Even when the setting initial value in the sub-blower start-up control is relatively high, the sub-blower can be started reliably, and in this regard, the system performance and reliability can be improved.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] FIG. 1 shows an air conditioner used for a clean room facility or the like, wherein 1 is an external air conditioner for adjusting the temperature and humidity of the external air OA taken in from an external air intake air passage 2, and 3 is an external air adjusted by an external air conditioner 1. A plurality of room pressure control systems K1 and K2 are provided for each of the outside air main blowers 4 that guide the discharge air of the outside air main blower 3, which is a main blower for outside air that supplies OA ′ to the main air passage 4 for outside air. Are connected via the connection air path 5.

Each of the room pressure control systems K1 and K2 has a plurality of system internal chambers 6 to be air-conditioned and to be controlled by the room pressure. Implement air conditioning and room pressure control.

In each of the room pressure control systems K 1 and K 2, reference numeral 7 denotes the air OA ′ (regulated outside air) from the connection air passage 5 and the return air RA guided from the internal room 6 through the return air passage 8. Is a system air conditioner for adjusting the temperature and humidity of the combined air, 9 is an air supply blower for supplying the adjusted air SA by the system air conditioner 7 to each system internal chamber 6 via an air supply passage 10, and 11 is a return air passage 8. The interposed return air blower 12 is an exhaust blower that discharges air from each system inner chamber 6 through the exhaust air passage 13 and exhausts the exhaust air EA to the outside of the system. The connection air passage 5 in each of the room pressure control systems K1 and K2,
Subsequent air supply passage 10 constitutes a divided air passage Rs for leading the divided air from outside air main air passage 4, and air supply blower 9 in each of room pressure control systems K1 and K2 is connected to outside air main passage 4. With respect to the outside air main blower 3 connected to the air passage 4, a sub blower Fs interposed in the branch air passage Rs is configured.

A branch air supply passage 10 for each system inner chamber 6
In a, a constant air volume device 14 (so-called CAV unit) for each room, which automatically adjusts the air supply amount qs to each system inner chamber 6 to the set air supply amount mqs, is interposed. A room pressure adjusting damper 15 is interposed in the return air passage 8a of the branch. Reference numeral 16 denotes a room pressure p of each system inner chamber 6 (in this embodiment, a pressure difference from an appropriate reference pressure such as atmospheric pressure). , A chamber pressure sensor 17 for detecting the
This is a room pressure controller that automatically adjusts the room pressure p of each system inner chamber 6 to the set room pressure mp by adjusting the opening of the room pressure adjustment damper 15.

Reference numeral 18 denotes a pressure sensor for detecting an air passage internal pressure ps of the supply air passage 10 (that is, an air passage internal pressure of a portion downstream of the sub-blower Fs in the branch air passage Rs).
19 adjusts the air flow rate of the air supply blower 9 based on the detection information of the pressure sensor 18 by adjusting the motor rotation speed by inverter control, and changes the air path internal pressure ps of the air supply air path 10 to the set air path internal pressure mps. It is a pressure controller on the supply side that is automatically adjusted.

Further, reference numeral 20 denotes a pressure sensor for detecting an air passage internal pressure pr of the return air passage 8 upstream of the return air blower 11, and reference numeral 21 denotes a pressure sensor based on the detection information of the pressure sensor 20.
The air flow rate of the return air blower 11 is adjusted by adjusting the motor speed by inverter control, and the air pressure pr in the return air passage 8 upstream of the air return fan 11 is automatically adjusted to the set air pressure mpr. Pressure controller on the return air side.

Connection air path 5 for each room pressure control system K1, K2
(That is, the auxiliary blower Fs
In the upstream air passage portion), a valve body 22 as an opening / closing damper Ds, an air flow sensor 23 for detecting an air flow amount Qo passing through the connection air passage 5, and the valve body based on detection information of the air flow sensor 23. 22 is adjusted so that each room pressure control system K1,
A constant air flow device 25 (CAV unit) for the system inlet in which a controller 24 that automatically adjusts the air introduction amount Qo from the connection air passage 5 in K2 to the set air introduction amount mQo is unitized.
Is interposed.

Further, with respect to the main air passage 4 for outside air, a pressure sensor 2 for detecting an internal pressure po of the main air passage 4 for outside air in the air passage.
6. Based on the detection information of the pressure sensor 26, the air flow rate of the main air blower 3 for outside air is adjusted by adjusting the motor rotation speed by inverter control, and the internal pressure po of the main air path 4 for outside air is set. A pressure controller 27 on the outside air side that automatically adjusts to the road pressure mpo is provided.

Reference numeral 28 denotes each of the room pressure control systems K1 and K according to a set time schedule and an artificial command given as appropriate.
2 is a system controller that starts and stops the air conditioning operation and the room pressure control operation and changes the operation mode.
Corresponds to the above-mentioned set values (set air supply amount mqs for each system inner chamber 6, set room pressure mp for each system inner room 6, set air for the air supply passage 10 and the return air passage 8, Road pressure mp
s, mpr, setting change of the set air introduction amount mQo) in the adjustment outside air introduction from the connection air passage 5, change of the opening of the air flow adjustment damper 29 interposed in the return air passage 8, and furthermore, the system air conditioner 7 In this case, the temperature and humidity adjustment modes are switched, and the amount of air blown by the exhaust blower 12 is changed.

Further, each system controller 28 keeps the valve body 22 of the system-inlet constant air volume device 25 in a fully closed state during a period in which the operation of each of the room pressure control systems K1 and K2 is stopped, so that a time schedule or an artificial When the operation start command of each of the room pressure control systems K1 and K2 (that is, the command including the start command of the sub-blower Fs) is given under the operation state of the outside air main blower 3, With respect to the control systems K1 and K2, the valve body opening operation of opening the valve body 22 of the system inlet constant air volume device 25, the air blower 9, the return air blower 11, and the exhaust blower 12 are started, and these blowers 9 , 11,12
And a blower start control for gradually increasing the blown air amount to a blown air amount according to the operation mode of execution.

With respect to the opening operation of these valve bodies and the start control of the blower, when each of the system controllers 28 is given the above-mentioned operation start command, specifically, as shown in FIG. Prior to the opening operation of the air blower and the activation of the exhaust blower 12, first, the air supply blower 9 and the return air blower 11 are started, and the supply air passage 10 and the return air passage 8 are opened.
Set each set air path pressure mps and mpr to initial value smp
By gradually shifting at a predetermined change rate from s, smpr (corresponding to the atmospheric pressure in this embodiment) to a value corresponding to the operation mode to be implemented, the pressure controllers 19, 21 on the supply side and the return side are provided. Under the adjustment of the blower volume by the air blower, start control for gradually increasing the blower volume of the air supply blower 9 and the return air blower 11 is started. In response to this, the opening operation of the valve body 22 and the exhaust blower 12 are started. Is started when the set delay time T has elapsed after the start of the start control for the air supply blower 9 and the return air blower 11, and the set air introduction amount mQo is executed from zero. Is gradually increased to a value corresponding to the operation mode of the valve body 22. The opening degree of the valve body 22 is gradually increased from the fully closed state under the opening degree adjustment by the controller 24 of the constant air volume device 25 for system inlet, and To the exhaust blower 12 The amount change command, it is constituted to increase progressively the blowing rate of the exhaust blower 12 from zero to blow rate corresponding to the operating mode of the embodiment.

In short, in the present embodiment, a valve 22 as an opening / closing damper Ds and an air supply blower 9 as an auxiliary blower Fs are provided in a branch airflow path Rs formed by the connection airflow path 5 and the air supply airflow path 10. Are sequentially interposed from the upstream side, the system controller 28, the pressure controller 19 on the air supply side,
And, when the start command of the sub-blower Fs (9) is given under the operation state of the main blower 3 before the opening operation of the opening / closing damper Ds (22), The sub-blower Fs (9) is configured to gradually increase the downstream-stream air pressure ps at a predetermined speed from a set initial value smps based on the detection information of the air-channel pressure ps downstream of the sub-blower Fs (9). Control means X1 for starting the sub-blower activation control for automatically adjusting the air blowing amount of the opening and closing operation of the opening / closing damper Ds (22) when the set delay time T has elapsed thereafter.

In this embodiment, the opening operation of the valve element 22 as the opening / closing damper Ds is performed when the set delay time T has elapsed after the start of the start-up control for the air supply blower 9 and the return air blower 11. By starting, not only the air supply blower 9 as the sub-blower Fs but also the return air blower 11 is similarly affected by the air path pressure po on the side of the main air path 4 in the main blower operating state. It is possible to effectively prevent the start of the blower based on the detection of the air passage pressure from being hindered.

[Second Embodiment] FIG. 3 shows a connection air passage 5 for each of the room pressure control systems K1 and K2 as an open / close damper Ds instead of the system inlet constant air volume device 25 shown in the first embodiment. An embodiment in which a motor damper 30 is interposed is shown,
An orifice 31 is interposed at a portion downstream of the motor damper 30 in each connection air passage 5, and a differential pressure sensor 32 for detecting a differential pressure Δpx (= po′-pi) across the orifice 31 is provided.

The opening of the motor damper 30 is adjusted based on the orifice differential pressure Δpx detected by the differential pressure sensor 32 as information on the amount of air passing through the connecting air path 5, and the differential pressure Δpx of the orifice 31 is set. A damper controller 33 for automatically adjusting the pressure mΔpx (that is, the differential pressure across the orifice corresponding to the set air introduction amount mQo) is provided.

The system controller 28 sets each of the set values mp, mp according to the operation mode as in the first embodiment.
The setting change of s, mpr, mΔpx, the opening degree of the air volume adjusting damper 29 interposed in the return air passage 8, the mode switching of the temperature and humidity adjustment in the system air conditioner 7, and the sending of the exhaust blower 12 Change the air volume.

Also, similarly to the above-described first embodiment, each system controller 28 keeps the motor damper 30 fully closed during the operation stop period of each room pressure control system K1, K2, With the operation of the outside air main blower 3, the room pressure control systems K1,
When an operation start command for K2 (that is, a command including a start command for the air supply fan 9 as the sub-fan Fs) is given, a damper opening operation for opening the motor damper 30 for the room pressure control systems K1 and K2, Blower start control for starting the air blower 9, the return air blower 11, and the exhaust blower 12, and gradually increasing the blown air amount of these blowers 9, 11, 12 to a blow air amount according to the operation mode of execution. Is carried out.

Regarding the opening operation of the damper and the start-up control of the blower, each system controller 28, specifically, when the operation start command is given (see FIG. 2), the opening operation of the motor damper 30, and Prior to the activation of the exhaust blower 12, first, the air supply blower 9 and the return air blower 11
Is started, and the set air passage internal pressures mps, mpr of the supply air passage 10 and the return air passage 8 are set to initial values smps,
The pressure controller 1 on the supply side and on the return side by gradually shifting at a predetermined change rate from smpr (a value corresponding to the atmospheric pressure in the present embodiment) to a value corresponding to the operation mode to be implemented.
Under the adjustment of the air flow by the air blowers 9 and 21, start-up control to gradually increase the air flow of the air supply fan 9 and the return air blower 11 is started. The start control of the blower 12 starts when the set delay time T elapses after the start of the start control for the air supply blower 9 and the return air blower 11, and changes the set differential pressure mΔpx from zero. The motor damper 30 is gradually increased from the fully closed position under the opening adjustment by the damper controller 33 by gradually increasing the opening to a value corresponding to the operation mode of the embodiment. The configuration is such that the blower amount of the exhaust blower 12 is gradually increased from zero to the blower amount according to the operation mode in accordance with the blower amount change command.

In short, in the present embodiment, similarly to the first embodiment, a motor damper 30 as an opening / closing damper Ds and a sub-blower are provided in a branch flow path Rs formed by the connection air path 5 and the supply air path 10. In a configuration in which the air supply blower 9 as Fs is sequentially interposed from the upstream side, the system controller 2
8, pressure controller 19 on the air supply side, and damper controller 33
When the start command of the sub-blower Fs (9) is given under the operation state of the main blower 3, prior to the opening operation of the opening / closing damper Ds (30), the internal pressure of the air passage at the downstream side of the sub-blower Fs (9). Based on the detection information of ps, the sub-blower Fs (9) automatically starts the sub-blower Fs (9) to start the sub-blower start control to gradually increase the downstream air pressure ps from the set initial value smps at a predetermined speed. After that, when the set delay time T has elapsed, the control means X1 for starting the opening operation of the opening / closing damper Ds (30) is configured.

It should be noted that also in this embodiment, the first
As in the embodiment, the air supply blower 9 and the return air blower 11
When the set delay time T elapses after the start of the start-up control, the opening operation of the motor damper 30 as the opening / closing damper Ds is started, so that not only the air supply fan 9 as the auxiliary fan Fs but also the return air fan. Similarly, it is possible to effectively prevent the fan 11 from hindering the start of the blower based on the detection of the air passage pressure due to the influence of the air passage internal pressure po on the side of the main air passage 4 in the main blower operation state.

Other configurations are the same as those of the first embodiment.

[Third Embodiment] FIG. 4 shows that each of the room pressure control systems K is used as an opening / closing damper Ds, similarly to the second embodiment.
1 shows an embodiment in which a motor damper 40 is interposed in the connection air passage 5 for K2, and in each connection air passage 5, as a pressure detecting means, an air passage internal pressure pi () of the connection air passage 5 in a downstream portion of the motor damper 40. In other words, in the branch air passage Rs formed by the connection air passage 5 and the air supply air passage 10, the air passage internal pressure between the motor damper 40 as the opening / closing damper Ds and the air supply blower 9 as the auxiliary blower Fs). Is installed.

The opening degree of the motor damper 40 is adjusted based on the detection information of the pressure sensor 41, and the air passage at the downstream side of the motor damper 40 in the connection air passage 5 to each of the room pressure control systems K1 and K2. Set internal pressure pi Air path internal pressure mpi
(For example, an atmospheric pressure equivalent value or the above-described reference pressure) is provided with a damper controller 42 that automatically adjusts the pressure.

Each system controller 28 sets each set value mqs, mp, mps, mpr, mpi according to the operation mode to be implemented.
, The opening degree of the air volume adjustment damper 29 interposed in the return air passage 8, the mode switching of the temperature and humidity adjustment in the system air conditioner 7, and the ventilation volume of the exhaust blower 12 are changed. As described above, a pressure-based control mode for controlling the degree of opening of the motor damper 40 so as to maintain the air passage internal pressure pi of the connection air passage 5 in the downstream portion of the motor damper 40 at the set air passage internal pressure mpi is adopted. In changing the required air introduction amount from the connection air passage 5 (that is, the above-mentioned set air introduction amount mQo) in each of the room pressure control systems K1 and K2, the connection air passage 5 at the downstream side of the motor damper 40 is changed. It is not necessary to change the set airway pressure mpi.

Further, each system controller 28 keeps the motor damper 40 in a fully closed state during a period in which the operation of each room pressure control system K1 and K2 is stopped. In the operation state 3, when an operation start command for each of the room pressure control systems K1 and K2 (that is, a command including a start command for the air supply fan 9 as the sub-blower Fs) is given, the room pressure control system K1 , K2, the damper opening operation for opening the motor damper 40, the air supply blower 9, the return air blower 11, and the exhaust air blower 12 are started, and the air flow of these blowers 9, 11, 12 is set to the operation mode. And a blower start control for gradually increasing the blower amount to a corresponding blower amount.

In the present embodiment, with respect to the opening operation of these dampers and the start-up control of the blowers, when the above-mentioned operation start command is given, each system controller 28 controls the air supply blower 9 and the return air blower. 11 and exhaust blower 12
Is started, and the set air passage internal pressures mps, mpr of the supply air passage 10 and the return air passage 8 are set to initial values smps,
The pressure controller 1 on the supply side and on the return side by gradually shifting at a predetermined change rate from smpr (a value corresponding to the atmospheric pressure in the present embodiment) to a value corresponding to the operation mode to be implemented.
Under the adjustment of the air flow by the air blowers 9 and 21, the air flow of the air blower 9 and the air blower 11 is gradually increased.
In addition, in response to a blow air amount change command to the exhaust blower 12, start-up control for gradually increasing the blow air amount of the exhaust blower 12 from zero to the blow air amount according to the operation mode to be performed is started, and the start-up of these blowers is also started. At the same time as the start of the control, based on the detection information of the pressure sensor 41, the air passage internal pressure pi on the downstream side of the motor damper 40 is maintained at the set air passage internal pressure mpi according to the operation mode of execution.
The pressure control for adjusting the opening of the motor damper 40 by the damper controller 42 is started.

In short, in the present embodiment, a motor damper 40 as an opening / closing damper Ds and a sub-blower Fs are provided in a branch air flow path Rs formed by the connection air path 5 and the supply air path 10.
In the configuration in which the air supply blower 9 is sequentially interposed from the upstream side, the system controller 28 and the air supply side pressure controller 1
9, and the damper controller 42, when the start command of the sub-blower Fs (9) is given under the operation state of the main blower 3,
Accordingly, based on the opening operation of the opening / closing damper Ds (30) and the detection information of the air passage internal pressure ps on the downstream side of the sub blower Fs (9), the downstream air passage internal pressure ps is set to the initial value s.
In performing the sub-blower start-up control for automatically adjusting the blowing amount of the sub-blower Fs (9) so as to gradually increase the speed from mps at a predetermined speed, based on the detection information of the pressure sensor 41 as the pressure detecting means, Opening / closing damper Ds (40)
Opening / closing damper Ds (40) so as to maintain the air passage internal pressure pi between the air blower and the sub blower Fs (9) at the set air passage internal pressure mpi.
Of the control means X2 for automatically adjusting the opening of the motor.

In the present embodiment, when the start-up control of the air supply blower 9 and the return air blower 11 is performed, as described above, the wind of the connection air passage 5 at the downstream side of the motor damper 40 as the opening / closing damper Ds is used. By automatically adjusting the opening of the motor damper 40 so as to maintain the in-path pressure pi at the set in-path pressure mpi, not only the supply air blower 9 as the auxiliary blower Fs but also the return air blower 11 are similarly operated. Further, it is possible to effectively prevent the start of the blower based on the detection of the air passage pressure from being affected by the influence of the air passage internal pressure po on the side of the main air passage 4 in the main blower operating state.

The other structure is the same as in the first and second embodiments.

[Fourth Embodiment] FIG. 5 shows the first to third embodiments.
As shown in the embodiment, an embodiment in which a sub-blower Fs is interposed in a diverging air passage Rs from the main air passage 4 and a sub-blower is interposed in a merging air passage to the main air passage is shown. A plurality of merged air passages Re are connected to the main air passage 51 that guides the intake air, and the opening / closing damper De and the sub-blower Fe are connected to the downstream side (that is, the connection to the main air passage 50) in each of the merged air passages Re. Side).

Reference numeral 52 denotes a system control as control means Y1 for performing an opening operation of the opening / closing damper De and a start control of the sub-blower Fe in response to a sub-blower Fe start-up command given under the operation state of the main blower 50. The start-up control of the sub-blower Fe is performed based on the air-path internal pressure pe on the upstream side of the sub-blower Fe detected by the pressure sensor 53, and sets the upstream air-path internal pressure pe to a set initial value smpe (for example,
The amount of air blown from the sub-blower Fe is automatically adjusted so as to gradually decrease from the atmospheric pressure equivalent value) to a set operation value at a predetermined speed.

Further, regarding the damper opening operation and the auxiliary blower start control, as shown in FIG. 6, when the start command is given, as shown in FIG.
Prior to the opening operation of, first start the sub-blower start control,
Thereafter, when the set delay time T has elapsed, the opening operation of the opening / closing damper De is started, and the opening degree of the opening / closing damper De is gradually increased from a fully closed state to a predetermined operation opening degree at a predetermined speed.

[Fifth Embodiment] FIG. 7 is similar to the fourth embodiment described above, and a plurality of merged air passages Re are connected to a main air passage 51 for guiding the intake air of a main blower 50. Re
In this embodiment, an opening / closing damper De and an auxiliary blower Fe are sequentially interposed from the downstream side.

Reference numeral 62 denotes a system control as a control means Y2 for executing an opening operation of the opening / closing damper De and a start control of the sub-blower Fe in accordance with a start-up command of the sub-blower Fe given under an operation state of the main blower 50. In the same manner as in the fourth embodiment, the start-up control of the sub-blower Fe is performed based on the air-path internal pressure pe on the upstream side of the sub-blower Fe detected by the pressure sensor 53. Is automatically adjusted so as to gradually decrease the set operation value from a set initial value smpe (for example, an atmospheric pressure equivalent value) at a predetermined speed to a set operation value.

In this embodiment, the system controller 6 controls the damper opening operation and the auxiliary blower activation control.
When the start command is given, the sub-blower start control is started, and the air path between the open / close damper De detected by another pressure sensor 63 and the sub-blower Fe is detected as a damper opening operation. Based on the internal pressure pe ', pressure control for automatically adjusting the opening degree of the opening / closing damper De is started so as to maintain the air passage internal pressure pe' between the opening / closing damper De and the sub-blower Fe at the set air passage internal pressure mpe '. There is a configuration to do.

[Another Embodiment] Next, another embodiment will be described. In the above-described first and second embodiments, in the configuration in which the opening / closing damper Ds and the sub-blower Fs are interposed in the branch airflow path Rs from the main wind path 4, the setting delay time is set after the start of the start-up control of the sub-blower Fs. When T elapses, the opening / closing damper Ds
However, after the start of the start control of the sub-blower Fs, the air passage internal pressure ps on the downstream side of the sub-blower Fs is changed from the set initial value smps to an appropriate set stable value. When ascending, the opening operation of the opening / closing damper Ds may be started.

Similarly, the merging air passage Re to the main air passage 51
In the configuration in which the opening / closing damper De and the auxiliary blower Fe are interposed, the opening / closing damper De is opened when the set delay time T elapses after the start of the start control of the auxiliary blower Fe as in the fourth embodiment. Instead of starting the operation, the auxiliary blower F
After the start control of e, the opening operation of the opening / closing damper De may be started when the air passage internal pressure pe on the upstream side of the sub-blower Fe decreases from the set initial value smpe to an appropriate set stable value. Good.

The main air passage for guiding the discharge air of the main blower is not limited to the outside air. The main air passage for guiding the discharge air of the main blower and the main air passage for guiding the intake air to the main blower are as follows. Respectively,
The air path for any use may be used.

The branch air path is not limited to the air path that guides the outside air to the room pressure control system. The branch air path and the merge air path are air paths for any purpose. Is also good.

In the sub-blower start control, the sub-blower F
In gradually increasing or decreasing the air pressure ps, pe downstream or upstream of s, Fe from the set initial values smps, smpe at a predetermined speed, the set initial values sm are set.
ps and smpe are not limited to values equivalent to the atmospheric pressure, and appropriate values may be selected according to various conditions.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment.

FIG. 2 is a graph illustrating sub-blower start-up control and damper opening control;

FIG. 3 is a configuration diagram showing a second embodiment.

FIG. 4 is a configuration diagram showing a third embodiment.

FIG. 5 is a configuration diagram showing a fourth embodiment.

FIG. 6 is a graph illustrating sub-blower activation control and damper opening control.

FIG. 7 is a configuration diagram showing a fifth embodiment.

FIG. 8 is a configuration diagram of a wind path showing a conventional example.

FIG. 9 is a graph for explaining auxiliary blower start control and damper opening control in a conventional example.

[Explanation of symbols]

 3 Main air blower 4 Main air flow path Rs Split air flow path Ds Open / close damper Fs Sub air blower ps Downstream air pressure in the air smps Setting initial value X1 Control means T Setting delay time X2 Control means pi Air path pressure 41 Pressure detection means mpi Setting air path pressure Reference Signs List 50 main blower 51 main wind path Re merged air path De opening / closing damper Fe sub blower pe upstream air path internal pressure smpe Initial setting value Y1 control means Y2 control means pe 'air path internal pressure 63 pressure detecting means mpe' set air pressure

Claims (4)

[Claims] An opening / closing damper and a sub-blower are sequentially interposed from an upstream side in a branch air flow from a main air duct for guiding discharge air of a main blower, and the sub-blower provided under an operation state of the main blower is provided. In response to a start command of the blower, based on the opening operation of the opening and closing damper, based on the detection information of the air passage internal pressure on the downstream side of the auxiliary blower,
A blower control system provided with control means for executing a sub-blower activation control for automatically adjusting the air flow rate of the sub-blower so as to gradually increase the downstream air passage internal pressure from a set initial value at a predetermined speed. The control means starts the sub-blower start control prior to the opening operation of the opening / closing damper when the start command is given, and thereafter, when a set delay time has elapsed, or A blower control system configured to start an opening operation of the open / close damper when a detected air passage internal pressure on a downstream side of the blower rises from the set initial value to a set stable value. 2. An opening / closing damper and a sub-blower are sequentially interposed from the upstream side in a branch airflow from the main airflow duct for guiding the discharge air of the main blower, and the sub-blower provided under the operating condition of the main blower is provided. In response to a start command of the blower, based on the opening operation of the opening and closing damper, based on the detection information of the air passage internal pressure on the downstream side of the auxiliary blower,
A blower control system provided with control means for executing a sub-blower activation control for automatically adjusting the air flow rate of the sub-blower so as to gradually increase the downstream air passage internal pressure from a set initial value at a predetermined speed. A pressure detecting means for detecting an air passage internal pressure between the opening / closing damper and the sub-blower, wherein the control means opens the opening / closing damper in response to the start command and starts the sub-blower start control. Performing automatically adjusting the opening degree of the open / close damper based on the detection information of the pressure detection means so as to maintain the air passage internal pressure between the open / close damper and the sub-blower at a set air passage internal pressure. A blower control system as a component. 3. An opening / closing damper and a sub-blower are sequentially interposed from a downstream side in a merging air passage to a main air passage for guiding intake air of the main blower, and the sub-blower provided under an operating state of the main blower is provided. In response to a start command of the blower, based on the opening operation of the opening and closing damper, based on the detection information of the air passage internal pressure on the upstream side of the sub-blower,
A blower control system provided with control means for executing a sub-blower activation control for automatically adjusting the blower volume of the sub-blower so as to gradually lower the upstream air passage internal pressure from a set initial value at a predetermined speed. The control means starts the sub-blower start control prior to the opening operation of the opening / closing damper when the start command is given, and thereafter, when a set delay time has elapsed, or A blower control system configured to start an opening operation of the opening / closing damper when a detected air passage internal pressure on an upstream side of the blower decreases from the set initial value to a set stable value. 4. An opening / closing damper and a sub-blower are sequentially interposed from a downstream side in a merging air passage to a main air passage which guides intake air of the main blower, and the sub-blower provided under an operation state of the main blower is provided. In response to a start command of the blower, based on the opening operation of the opening and closing damper, based on the detection information of the air passage internal pressure on the upstream side of the sub-blower,
A blower control system provided with control means for executing a sub-blower activation control for automatically adjusting the blower volume of the sub-blower so as to gradually lower the upstream air passage internal pressure from a set initial value at a predetermined speed. A pressure detecting means for detecting an air passage internal pressure between the opening / closing damper and the sub-blower, wherein the control means opens the opening / closing damper in response to the start command and starts the sub-blower start control. Performing automatically adjusting the opening degree of the open / close damper based on the detection information of the pressure detection means so as to maintain the air passage internal pressure between the open / close damper and the sub-blower at a set air passage internal pressure. A blower control system as a component.