JPH08313033A - Air direction controller - Google Patents

Abstract

PURPOSE: To reduce the number of parts by specifying a closing position of a movable louver on the basis of operation time from an opening position. CONSTITUTION: Driving means 32 of a motor 22 for moving a movable louver 21 supplies power to the motor 22 when a louver opening condition holds to open the movable louver 21 from a closing position. When there is detected the opening position by an opening position detection means 30 for detecting an opening position based upon a change in a louver opening position detection switch 28 from an on to off state, the power supply to the motor 22 is interrupted and hereby the movable louver 21 is stopped. The movable louver 21 is closed from the opening position when a louver closing condition holds, and when a closing operation timer 31 completes counting of the time required for the movable louver 21 to operate from the opening position to the closing position, the power supply to the motor 22 is interrupted and hereby the movable louver 21 is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind direction control device for circulating cold and warm air to air-condition a living space.

[0002]

2. Description of the Related Art In recent years, for example, in a ventilation type heating appliance, it has been considered as one means for energy saving to control the blowing direction of warm air downward so as to efficiently heat the vicinity of the floor surface. At that time, the mainstream method is to automatically control the angle of the air volume control means (hereinafter referred to as the movable louver) that controls the wind direction according to the combustion amount and the air volume, and the movable louver is driven by a pulse motor or an induction motor. .

A conventional wind direction control device for a gas fan heater using an induction motor (hereinafter referred to as a motor) will be described below.

FIG. 4 is a block diagram of a conventional wind direction control device. In FIG. 4, a movable louver 2 is provided at the outlet 1 of the gas fan heater so as to be opened and closed vertically with A as a fulcrum. A louver position detecting means 4 is fixed to an output shaft 10 of the motor 3. The louver position detection means 4 is connected to the movable louver 2 by a power transmission means 5. As a result, the rotational movements of the motor 3 and the louver position detection means 4 are converted into the vertical opening / closing movement at the fulcrum A of the louver via the power transmission means 5. A louver open position detection switch 6 and a louver closed position detection switch 7 are provided in contact with the louver position detection means 4, and when the movable louver 2 is in the open position, the recess a8 is located at the louver open position detection switch 6. When the switch 6 is in the position, the switch 6 is turned off, and similarly, the movable louver 2
When the switch is in the closed position, the concave portion b9 is located at the louver closed position detection switch 7 so that the switch 7 is turned off. As a result, the louver 2 can be detected by detecting the state of the switches 6 and 7 or which switch is off.
The position of can be detected.

FIG. 5 is a flow chart showing the operation of the conventional wind direction control device. In FIG. 5, when the combustion amount and the air flow of the appliance change and the louver operation condition is satisfied, the louver operation condition determination 11 determines the louver operation. Next, a direction determination 12 is performed to determine whether it is an opening operation or a closing operation.

First, the case where the opening operation is determined will be described. When the opening operation is started, the movable louver is in a position other than the normally open position and the louver open position detection switch 6 is on. When the open position detection switch determination 13 is on, the motor 3 is energized. Movable louver 2 by operation of motor 3
The louver position detecting means 4 rotates as the
8 reaches the position of the louver open position detection switch 6, and the louver open position detection switch 6 is turned off. The motor 3 is energized and the movable louver 2 continues the opening operation until the open position detection switch determination 15 detects the off state. When the off position is detected, the open position is determined, and the movable louver 2 is stopped.
If the open position detection switch determination 13 is OFF, it is determined to be open and the movable louver 2 is not operated.

Next, the case where the direction determination 12 determines the closing operation will be described. When the closing operation is started, the movable louver is not in the normally closed position and the louver closed position detection switch 7
Is on. When the closed position detection switch judgment 16 is ON, the motor 3 is energized. The movable louver 2 is closed by the operation of the motor 3 and the louver position detecting means 4
Rotates, the recess a9 reaches the position of the louver closed position detection switch 7, and the louver closed position detection switch 7 is turned off. The motor 3 is energized and the movable louver 2 continues to close until the closed position detection switch determination 18 detects OFF. When the off state is detected, the closed position is determined, and the movable louver 2 is stopped. When the open position detection switch judgment 16 is OFF, it is judged to be closed and the movable louver 2 is not operated.

FIG. 6 is a timing chart showing the operation of the conventional wind direction control device. In FIG. 6, the louver open position detection switch 6 and the louver closed position detection switch 7 are turned off when the movable louvers 2 perform opposite operations,
When both switches 6 and 7 are in the normal state, the switches 6 and 7 are not continuously turned off at the same time, or continuously turned on at the same time. . Therefore, as the failure detection of the switches 6 and 7, the movable louver 2 is in operation, and both switches 6 and 7 are simultaneously turned on continuously for a time t longer than the time for which both the switches 6 and 7 are simultaneously turned on or continuously turned on simultaneously. Is detected to determine a short circuit failure and an open failure of each switch 6, 7.

[0009]

However, in the above-mentioned conventional configuration, two position detection switches 6 and 7 are required to determine the open position and the closed position of the movable louver 2.

Therefore, a first object of the present invention is to provide a single position detection switch, reduce the number of parts, and provide a simple structure.
It is to realize an inexpensive and highly reliable wind direction control device.

A second object is to ensure the safety in case of component failure of the device when the position detection switch is one.

[0012]

In order to achieve the above-mentioned first object, the present invention is provided at a blower port for discharging heated or cooled air sucked into a device from a room to the room again, and when the blower is stopped. A wind direction control plate that closes the blower opening and guides the direction of the blown air when blowing air, and a motor that is connected to the wind direction control plate by power transmission means to open and close the wind direction control plate,
Open position detection means to detect when the wind direction control plate is located in the open position, a timer that outputs a timed signal when the required set time to drive the wind direction control plate from the open position to the closed position by the motor is counted, and an open position detection Means or a motor control means for stopping the driving of the motor in response to a signal from a timer.

Further, in order to achieve the second object, it is provided at a blower port for sucking air into the device from the room and heating or cooling the air again and discharging the air into the room again. A wind direction control plate that guides the direction of the blown air, a motor that is connected to the wind direction control plate by a power transmission means to drive the wind direction control plate to open and close, and position detection means that detects that the wind direction control plate is in a predetermined position. , A timer 1 that outputs a timed signal when the required set time for driving the motor to change the position of the wind direction control plate is counted, motor control means for stopping the drive of the motor by the signal of the position detection device and timer 1, and the wind direction A timer 2 that outputs a timed signal when the time exceeding the time required for the control plate to reach a predetermined position detected by the position detection means is counted, and a detection signal from the position detection means are timed. Those having an abnormality detection device for determining not to receive the abnormality of the opening and closing operation prior to receiving the signal from -2.

[0014]

According to the first means, the upward open position of the wind direction control plate which opens and closes in the vertical direction is detected by the change of the state of the switch, and the wind direction control plate is stopped at the open position. To detect the closed position in the downward direction, the wind direction control plate is operated for a time period from the start of the closing operation until the closed position is reached from the open position, and the wind direction control plate is stopped when the time has elapsed.

Further, according to the second means, conversely, the detection of the closed position is detected by the switch, the detection of the open position is detected when the required time elapses, and the wind direction control plate is driven up and down. When the wind direction control plate opens and closes and the position is not detected even after the time required for position detection is predicted, the timed signal that indicates that the time has been exceeded is output earlier than the position detection signal. , The abnormality is detected as some failure of the wind direction control device, and the wind direction control plate is stopped.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to.

FIG. 1 is a diagram showing the configuration of a wind direction control device for a gas fan heater. In FIG. 1, a movable louver 21 is provided at the outlet 20 of the gas fan heater so as to be opened and closed vertically with B as a fulcrum. Two
Reference numeral 2 denotes a motor, and a louver position detecting means 25 is fixed to an output shaft 23 of the motor 22. The louver position detecting means 25 is moved by the power transmission means 27 to move the louver 2.
It is connected to 1. As a result, the rotational movement of the motor 22 and the louver position detecting means 25 is converted into the vertical opening / closing movement at the fulcrum B of the louver via the power transmission means 27. Further, a louver open position detection switch 28 is provided in contact with the louver position detection means 25, and when the movable louver 21 is in the open position, the recess 26 is located at the louver open position detection switch 28 and the switch 28 is turned off. It is placed in a relationship. Reference numeral 24 is a lead wire connected to the motor 22, and 29 is a lead wire connected to the switch 28.

Reference numeral 32 is a motor driving means for the motor 2
2 is supplying power. Further, the motor driving means 32
The open position detecting means 30 for detecting the louver open position due to the change of the louver open position detecting switch 28 from the on state to the off position and the closing operation timer for counting the time for which the movable louver 21 operates from the open position to the closed position. 31 is connected, and control of supply and stop of electric power to the motor 22 is performed based on these signals.

Further, an open position switch abnormality detecting means 34 is connected to the motor driving means 32, and when the abnormality is detected, the supply of electric power to the motor 22 is stopped. The open position switch abnormality detecting means 34 has an open position detecting safety timer 3
3 and the open position detecting means 30 are connected, and an abnormality is detected based on these signals.

FIG. 2 is a flow chart showing the operation sequence of the wind direction control device, and FIG. 3 is the same timing chart. The operation of the wind direction control device will be described with reference to FIGS. The louver operation condition determination 35 determines the louver operation. When the louver operation condition is satisfied, the direction determination 36 is performed next to determine whether the operation is an open operation or a closed operation.

First, when the opening operation is judged, the opening position detection safety timer 33 is activated to energize the motor 22 to open the movable louver 21 from the closed position. Motor 2
The second operation opens the movable louver 21, the louver position detecting means 25 rotates, the recess 26 reaches the position of the louver open position detection switch 28, and the louver open position detection switch 28 changes from ON to OFF. Open position detection means 3
0 indicates this change of state from on to off to the motor drive means 32 in the open position. Open position detection determination 39 of FIG.
The motor 22 is energized and the movable louver 21 continues to open until the open position is detected by. When the open position is detected by the open position detection determination 39, the motor driving means 32 stops energizing the motor 22 and the movable louver 21 stops.

Next, when the direction determination 12 determines the closing operation, the closing operation timer 31 is activated to energize the motor 22 to close the movable louver 21 from the open position. The closing operation timer 31 is a time t1 during which the movable louver 21 operates from the open position to the closing position, and during the time t1, the motor driving means 32 energizes the motor 22 to continue the closing operation of the movable louver 21, but the closing operation timer When 31 counts t1, the motor driving means 32 sets the motor 2
The energization of 2 is stopped and the movable louver 21 is stopped. t1
Can be designed by the movable louver 21, the power transmission means 27, the louver position detection means 25, and the motor 22.

As described above, when the wind direction control device operates normally, the open position and the closed position are detected by one louver open position detecting switch 28, the open position detecting means 30 realized by the microcomputer, and the closing operation timer 31. Can be done by Comparing this with the conventional example, although the program load on the microcomputer is increased, one switch having a sliding portion can be reduced, and the failure rate of the entire device can be reduced. It can be expected that the cost of parts and materials including the switch lead wires can be reduced, the structure of the mechanism can be simplified, and the space for arranging parts can be reduced.

It is obvious that the same effect can be expected by detecting the closed position and detecting the open position by the timer based on the same operation principle.

Further, the open position detection judgment 3 at the time of the opening operation of FIG.
When the open position detection is not reached at 9, the end determination 4 of the open position detection safety timer 33 started at the start of the opening operation 4
Do 4 together.

If the open position is not detected by the end judgment 44 of the open position detection safety timer 33 due to some failure in the device, the open position switch abnormality detecting means 3
By 4, the power supply to the motor 22 is stopped, the operation of the device is stopped, and the abnormality is notified.

In FIG. 3, the open position safety timer time t3
Is the closing operation time t1 and the opening operation time t2 of the movable louver 21.
Of the motor output shaft 23 and the louver position detection device 25 for one rotation. As a result, even if the position of the louver position detecting means 25 deviates to the open position side from the originally closed position at the initial stage of the opening operation, if the device normally operates, the louver position detecting means 25 must be opened within the set time. Detection can be performed.

Since the open position detecting means 30 determines that the state of the louver open position detecting switch 28 has changed from ON to OFF, the louver open position detecting switch 28 is continuously ON for the open position safety timer time t3. Both mode failures and open mode failures that are continuously off for t3 can be detected.

Here, the short mode failure is a short failure of the louver position detection switch 28, a short of the switch lead wire 29, a disconnection of the motor 22, a disconnection and short circuit of the motor lead wire, a failure of the motor driving means 32, and a mechanical component. It is possible that the sticking of The open mode failure may be an open failure of the louver position detection switch 28, a disconnection of the switch lead wire 29, or the like.

As described above, when the wind direction control device is in an abnormal state, when the open position is not detected during the time when the motor output shaft 23 makes one rotation or more during the opening operation, the device is stopped and the abnormality is informed. It is possible to expect the effect that it is possible to detect various equipment failure modes and improve the safety against component failure.

Under the same operating principle, it is obvious that the same effect can be expected even if the closed position is detected and the open position is detected by a timer.

When the open position is detected by position detection,
Since the failure determination is performed when the movable louver 21 shifts from the closed state to the open state, it is possible to abnormally determine a failure that the movable louver 21 does not open at a place where it should be opened in a heating device such as a fan heater. On the other hand, it can be operated on the safe side.

[0033]

As is clear from the above description, the following effects can be obtained by the wind direction control device of the present invention.

According to claim 1 of the present invention, the achievement of the opening drive by the motor of the wind direction control plate as the main operation of heating or cooling of the air conditioner is controlled while confirming by the open position detecting means, and after one of the appliances is stopped. The achievement of the closing operation by the motor of the wind direction control plate that creates a secondary operation state such as the prevention of dust intrusion can be controlled in the expectation of stopping at a predetermined position by the timed operation of the timer. Therefore, while ensuring the conditions of the main operation, it is possible to reduce the parts by substituting the position detection means that requires an installation space near the wind direction control plate and the motor for the secondary operation instead of the timer of the microcomputer. Further, the structure can be simplified, reliability against failure can be improved, and the arrangement space can be reduced to reduce the size and size of the instrument.

Further, according to claim 2 of the present invention, when there is a problem that the opening and closing operation cannot be completed only by the position detecting means, the motor continues to open and close, the wind direction control device remains fixed, or If a timer alone is used, the position detection means confirms the inconvenience that the predetermined device operation cannot be expected due to insufficient opening / closing operation, etc. within the predetermined time limit of the timer. Will detect this quickly,
Safety can be ensured by preventing abnormal operation such as equipment component failure and foreign material clogging.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a wind direction control device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation sequence of the device.

FIG. 3 is a timing chart showing an operation sequence of the device.

FIG. 4 is a block diagram of a conventional wind direction control device.

FIG. 5 is a flowchart showing an operation sequence of the device.

FIG. 6 is a timing chart showing an operation sequence of the device.

[Explanation of symbols]

 20 Blow-out Port 21 Movable Louver 22 Motor 25 Louver Position Detection Means 27 Power Transmission Means 28 Louver Open Position Detection Switch 30 Open Position Detection Means 31 Closing Timer 32 Motor Driving Means 33 Open Position Detection Safety Timer 34 Open Position Switch Abnormality Detection Means

Claims (2)

[Claims] 1. An air flow direction control plate which is provided at a ventilation port for inhaling heated or cooled air from a room to a device and again discharging the air into the room, closing the ventilation port when the ventilation is stopped, and guiding the direction of the blown air during the ventilation. , A motor that drives the wind direction control plate to open and close via a power transmission unit, an open position detection unit that detects that the wind direction control plate is located at an open position, and if the wind direction control plate is closed, from the open position. And a wind direction control device including a timer that outputs a timed signal when a predetermined time is reached and a motor control unit that stops the driving of the motor according to a signal from the open position detection unit or the timer. 2. An air flow direction control plate which is provided at a ventilation port for inhaling heated or cooled air sucked into a device from the room again into the room, closes the ventilation port when the ventilation is stopped, and guides the direction of blown air at the time of ventilation. , A motor that drives the wind direction control plate to open and close via a power transmission unit, a position detection unit that detects that the wind direction control plate is located at a predetermined position, and the wind direction control plate is driven by the motor to be predetermined. When a timer 1 that outputs a timed signal at a time, a motor control unit that stops the drive of the motor by the signal of the position detection unit or the timer 1, and a time required for the wind direction control plate to reach a predetermined position are exceeded, If the timer 2 that outputs a timed signal and the detection signal from the position detection means are not received before the signal from the timer 2 is received, the opening / closing operation is abnormal. A wind direction control device including an abnormality detection unit that determines that