JPH11287511A - Outlet nozzle of air conditioning system duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply air-conditioning air into a space zone which requires a supply range of air-conditioning air at a necessary timing in an outlet nozzle of an air conditioning system duct. SOLUTION: A outlet nozzle 1 of this air conditioning system duct is provided with a speed signal generator 6 and a position detector 5 which measure the present speed and the present position of an induction motor 3, a phase control circuit 2 which performs a phase control of the electricity supplied to the induction motor 3, and a microcomputer 7 which performs a feedback control of this output using a software servo. By setting an amount necessary for deviation by the microcomputer 7 based on target set values such as a tilting center start point, a tilting angle and the like and present measured values, air- conditioning air can be supplied to necessary space zones at required target values from the outlet nozzle 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a zone air conditioner used for supplying conditioned air to a required space zone in a large space and a large open space such as a factory or an airport building terminal through an air conditioning system duct. It relates to a blowing nozzle.

[0002]

2. Description of the Related Art Conventionally, the following types of blow nozzles are known. Hereinafter, the blowing nozzle will be described with reference to FIG.

[0003] As shown in the figure, an air conditioning system duct 101 suspended by anchor bolts 103 from a ceiling surface 102 to an air conditioning system duct 101 supplied with air conditioning air from an air conditioner.
A ventilation tube 104 branched and connected from the middle of the cylinder, and a swing drive unit 106 having a built-in swing mechanism with a motor 105 as a drive source therein are connected to a neck connected via the swing drive unit 106. A rotary cylinder 107 that swings and swings, and a blow nozzle 108 that blows conditioned air to the rotary cylinder 107 are formed, and the conditioned air is supplied in a direction in which the blow nozzle 108 swings. .

[0004]

In such a conventional air-conditioning system duct blowing nozzle, a standard mechanism using a swing rod of a fan is used as a swing mechanism, and a swing center which determines swing directivity is used. The position of the starting point is fixed, and the swing is the swing swing amplitude of a fixed trajectory and is restricted by the supply range of the conditioned air.Therefore, the factory cannot follow the movement of the worker, and the swing of the swing swing range is excessive. There was a problem in the effective use of energy, such as supplying air-conditioned air to a dead space where there was a shortage or no workers.

[0005] Further, when a work place is relocated due to a layout change of a manufacturing line, as a related change, the entire apparatus is lowered from a high place to separate a ventilation cylinder and a rotary cylinder, and then a swing rod of a rotation drive unit is previously moved. Replacement with a prepared rod of a different length, changing the connection position while checking the adjustment of the engagement position, assembling and reassembling as it is complicated, construction costs and additional work requiring construction man-hours are necessary, and the swing swing center starting point There is a demand for a swing mechanism that can easily and easily change the swing amplitude at any time during driving.

[0006] In addition, in large openings where people enter and exit and carry in and out of cargo handling of articles and materials frequently, there is a problem that natural ventilation is large and air conditioning energy loss is large. It is required to supply conditioned air at a certain timing to make the space zone comfortable and energy-saving.

The present invention has been made to solve the above-mentioned conventional problems, and the starting point of the swing center, the swing amplitude range, and the swing speed can be arbitrarily changed as needed during driving. It is another object of the present invention to provide a zone outlet nozzle of an air-conditioning system duct which enables remote operation of this operation.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, a zone outlet nozzle of an air-conditioning system duct according to the present invention sets the rotational angle and the rotational speed of an induction motor for driving the swing of the outlet nozzle in both forward and reverse directions. , A software servo circuit that performs phase control using a microcomputer.

According to the present invention, the required starting point of the swing center, the swing amplitude and the swing speed are designated in advance and input to the microcomputer, so that the movement position of the swing center start point can be determined at any time during driving. The swing amplitude range and the swing speed can be arbitrarily changed.

[0010] This also eliminates the need for a swing mechanism of a purely mechanical mechanism using a swing crank rod, and eliminates the necessity of parts and adjustment of the swing mechanism even if the layout of the equipment is changed. Eliminates construction work and eliminates construction costs and man-hours. In addition, since the degree of freedom in setting the center position of the swing starting point and the swing amplitude and swing speed is large, it is possible to supply conditioned air only to the necessary space zone even in a building space having a large opening, Energy saving and comfortable space zone can be achieved.

Further, by using a microcomputer, it is possible to transmit and receive external information of required setting conditions by a communication function and perform remote operation. And a blowout nozzle of an air-conditioning system duct capable of realizing an energy-saving and comfortable space zone can be obtained.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a ventilation tube having a blowing nozzle, a phase control circuit for controlling the phase of an induction motor power supply, and a speed signal for measuring the current speed and the rotational position of the induction motor. Calculates the amount of deviation from the generator and position detector, both measured values and the target set value of the respective oscillating means, and determines the required amount of oscillating in both forward and reverse directions according to the magnitude of this amount of deviation. And a microcomputer that feedback-controls the output to the phase control circuit, and uses a required amount corresponding to the magnitude of the deviation amount of the oscillating means, the oscillating center starting point, the oscillating amplitude, and the oscillating amplitude. It has the effect of moving to a target set value (swinging means) requiring speed.

Further, feedback control is calculated by PID control or fuzzy control, and the function of making the deviation between the target swing speed and the current speed always zero is programmed by a microcomputer into the feedback control to the phase control circuit. It is controlled and output, and it does not cause disturbances such as excessive movement from the target swinging target speed due to the inertia force of the ventilation cylinder and blow-out nozzle, variation of the slip characteristic of each induction motor, and excessive response to delay. The responsiveness can be improved by controlling the stabilizing element and following the blowing nozzle speed at high speed without fluctuating.

A microcomputer starts counting the output of the speed signal generator at the timing when the output of the position detector changes. The pulse output signal of the step angle of the position detector (360 degrees per rotation is mechanically converted to a mechanical signal). ) Is measured by the power generation frequency signal of the speed signal generator, whereby the minute angle of the swing amplitude can be detected with a resolution higher than the step angle of the position detector.

Also, commands for setting and changing of the center of the swing center, swing amplitude, swing speed, operation time, and the like, which are input from the outside, are transmitted and received through communication means. It is equipped with a microcomputer that commands stop, status display, alarm,
It performs a command by remote control and a condition diagnosis process for determining an abnormality in the entire system.

Further, in a required target setting mode such as a swing center starting point, a swing amplitude, a swing speed, and an operation time, automatic operation control is performed by using program software of parameters created for a plurality of set values. The microcomputer searches for an external communication function and automatically controls the sequential feeding according to program software registered in the microcomputer in advance to drive the induction motor.

Further, a receiver for receiving a radio signal transmitted from the outside is provided in the apparatus main body of the blowing nozzle, and remote control is performed by receiving and responding to the reception.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0019]

(Embodiment 1) As shown in FIGS. 1 and 2,
Induction motor 3 driven by the output of phase control circuit 2 on the main body of blowing nozzle 1 attached to air conditioning system duct 11
And a speed reduction mechanism 4 directly connected to the rotor shaft, a position detector 5 for detecting a direction, a ventilation tube 10 supporting the blowing nozzle 1, and a speed signal generator 6 for detecting a speed. The phase control circuit 2 has a software servo configuration in which the microcomputer 7 performs feedback control based on the measurement information, and information on the current speed and the current position is always fed back to the microcomputer 7. here,
When the respective target set values are stored in the microcomputer 7 in advance, the amount of deviation between each target set value and the measured value of the current value is calculated, and the required amount in both the forward and reverse directions according to the magnitude of the amount of deviation. Is determined by the microcomputer 7. Then, the conduction start timing of the gate voltage of the bidirectional switching element of the phase control circuit 2 is set by controlling the output signal corresponding to the time difference at the zero cross point of the voltage phase of the AC power supply of the induction motor 3. As a result, the swing center starting point, swing amplitude,
The induction motor 3 can be driven by changing the swing speed to the target set value that requires.

In the embodiment, the microcomputer 7 is used for setting the swinging speed, but the speed of the induction motor 3 may be adjusted instead.

(Embodiment 2) FIG. 3 shows the response speed state of the induction motor 3, and the microcomputer 7 controls the microcomputer 7 for variations in the speed affected by disturbance elements during operation and for the induction motor 3.
Is provided with software that has programmed parameters that function to constantly correct the deviation of the speed deviation e, whose response is disturbed by the inherent speed slip, etc., to zero by PID operation control or fuzzy control. By calculating and controlling the deviation value between the set value V and the actual speed V1 (current speed) in the sampling cycle, the overresponse of the overshoot of the speed is suppressed, and unless the deviation becomes zero, either the plus or the minus direction. Then, it is possible to determine the necessary amount for continuously changing the output and output the same to the phase control circuit 2.

(Embodiment 3) FIG. 4 shows an output time chart of a speed output signal and an output signal of a rotational position.
At the position of a step angle obtained by dividing the circumference of the output shaft into equal parts, a position detector 5 of a rotational position for outputting a parallel digital signal unique to the position, and a generator directly connected to the induction motor 3. A speed signal generator 6 for outputting the power generation frequency is provided. The timing at which the angle position signal of the step angle changes by the counter function of the microcomputer 7 is used as the count start point of the output of the power generation frequency, and is measured at the next change timing. Is related to how much the output of the speed signal generator 6 can be measured during the period in which one pulse of the step angle is output, and detecting the small angle of the swing with the resolution higher than the step angle. Can be.

(Embodiment 4) In the embodiment shown in FIG.
Set values such as the swing center starting point, swing amplitude, swing speed, operation time, and the like of the blowing nozzle 1 and a change command are externally transmitted and received via communication means. The microcomputer 7 has a function of determining conditions such as a status display and an alarm command.

In the above configuration, each set value and the change of the set value are transmitted by a unique signal, which is received by the microcomputer 7. For example, the phase control circuit 2 operates normally when there is no new feedback signal from the position detector 5 with respect to the updated arithmetic control output of the microcomputer 7 even after a certain time has elapsed after changing to a new target setting during operation. If the induction motor 3 is not driven to rotate, the microcomputer 7 can determine that there is an abnormality. Then, the abnormal signal is sent to the microcomputer 7
Is output to sound the alarm, and at the same time, a dot is lit on the mode display of the abnormal location to notify it.

(Embodiment 5) In the embodiment shown in FIG. 6, a plurality of set values are set for required target setting modes such as a swing center starting point, swing amplitude, swing speed, and operation time. Is stored in advance, and the program software of the specified set value is searched by receiving an external communication means,
The microcomputer 7 performs feedback control of the induction motor 3 to a specified set value.

In the above configuration, for example, when it is desired to change the swing center starting point and the swing amplitude from the current set values, each of the updated target set values is transmitted from the outside to the microcomputer 7 by a communication function.
Can drive the induction motor 3 to the updated target set value by performing a feedback control in the registered order in which the corresponding software program is searched and stored.

(Embodiment 6) In the embodiment shown in FIG. 1, a receiving section 9 for receiving a radio signal transmitted from the outside is attached to the blowing nozzle body 8 of the blowing nozzle 1.

In the above configuration, the radio signal is used to set a required target setting mode such as a swing center starting point, a swing amplitude, a swing speed, an operation time, etc .; , Such as emergency stop. The receiving unit 9 is to be combined with various sensors corresponding to the wireless function.

(Embodiment 7) In the embodiment shown in FIG. 7, a plurality of blowout nozzles 108 are provided at intervals in the air-conditioning system duct 102, and a control function for remotely controlling the blowout nozzles 108 is provided for each blowout nozzle. This is provided for the nozzle 108.

[0030]

As is apparent from the above embodiments, according to the present invention, the change in the situation required at the site, the entry and exit of people, and the loading and unloading of goods and materials are frequently limited by the supply range of air-conditioned air. It is possible to supply air-conditioned air by directing the blow nozzle at the timing that is necessary only for the required space zone and update the set value at any time during operation without receiving, providing energy-saving and comfortable space zone The effect to be obtained is obtained.

Further, it is possible to set a plurality of target values which require the swing center starting point, swing amplitude, and swing speed which determine the directivity of the swing, and the degree of freedom of the set values can be increased. .

Further, by setting the swing amplitude required at the site to have a different rod length, the setting of the corresponding incidental work is eliminated.

Further, a remote control for easily controlling the required setting conditions by a communication or wireless function can be obtained.

Further, by combining with various sensors, it is possible to supply the conditioned air only at a necessary timing.

In addition, the operation can be stopped for a space zone which is not required, so that an energy-saving blow nozzle system can be obtained.

[Brief description of the drawings]

FIG. 1 is a software servo circuit diagram of a blowing nozzle according to a first embodiment of the present invention.

FIG. 2 is a view showing the configuration of a blowing nozzle according to Examples 1 and 6 of the present invention.

FIG. 3 is a diagram illustrating a response speed state according to a second embodiment of the present invention.

FIG. 4 is a time chart of an output signal according to the third embodiment of the present invention.

FIG. 5 is a circuit diagram for transmitting and receiving by a communication function according to a fourth embodiment of the present invention.

FIG. 6 is a software program diagram according to a fifth embodiment of the present invention.

FIG. 7 is a vertical sectional view of an individual system control according to a seventh embodiment of the present invention.

FIG. 8 is a view showing a configuration of a conventional blowing nozzle device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blowing nozzle 2 Phase control circuit 3 Induction motor 4 Reduction mechanism 5 Position detector 6 Speed signal generator 7 Microcomputer 8 Blowing nozzle main body 9 Receiving part 10 Ventilation cylinder 11 Air conditioning system duct 101 Ceiling surface 102 Air conditioning system duct 103 Anchor bolt 104 Vent cylinder 105 Motor 106 Swing drive 107 Rotating cylinder 108 Blow-out nozzle

Claims (7)

[Claims] 1. A ventilation cylinder having a blow nozzle, a phase control circuit for controlling the phase of an electric power of an induction motor, and supplying the power to the induction motor.
A speed signal generator and a position detector for measuring the current speed and rotational position of the induction motor, both measured values and target set values for the respective oscillating means (oscillation center starting point, oscillation amplitude, oscillation speed) The microcomputer calculates the respective deviation amounts, determines the required amount of the swinging means in both the forward and reverse directions according to the magnitude of the deviation amount, and feedbacks the output to the phase control circuit. A blow nozzle for an air conditioning system duct configured to move the blow nozzle to a target set value required by the swing means with a required amount corresponding to the magnitude of the deviation amount of the swing means. 2. The feedback control is calculated by PID control or fuzzy control, and the function of always making the swing target speed and the current speed zero is output to the phase control circuit by feedback control by program software of a microcomputer. The blow-out nozzle of the air-conditioning system duct according to claim 1. 3. In the detection of the position detector and the speed signal generator, the output of the speed signal generator is started to be counted at the timing when the output of the position detector changes, so that the position detector can be decomposed beyond the step angle. 3. The blow-out nozzle for an air-conditioning system duct according to claim 1, wherein the minute angle of the swing amplitude can be detected with high accuracy. 4. An externally input command for setting and changing the swing means is transmitted and received by the communication means.
4. The blow-out nozzle for an air-conditioning system duct according to claim 1, further comprising a microcomputer for instructing abnormality determination, emergency stop, status display, and alarm of the entire control system, and performing a diagnosis process by a command from a remote control. 5. A blowing nozzle for an air-conditioning system duct according to claim 1, wherein the target setting mode required by the oscillating means is provided with program software of parameters created for a plurality of set values. . 6. The air-conditioning system duct according to claim 1, further comprising a receiving portion for receiving a radio signal transmitted from the outside, provided in the main body of the blowing nozzle, and capable of remote control by receiving and responding to the reception. Blow nozzle. 7. The air-conditioning system duct according to claim 1, wherein the air-conditioning system ducts are provided with a plurality of air-spacer units spaced apart from each other and the air-conditioning system ducts are individually controlled remotely.