JPH10160213A - Ventilator for garage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge exhaust gas even at the failure of an exhaust gas sensor by effecting ventilation by applying power to a fan motor with the generated operation signal by the exhaust gas operating means based on the increasing change of the exhaust gas that is output by the detection of the exhaust gas of an automobile inside a garage by the exhaust gas sensor. SOLUTION: An exhaust gas operation control means 11 generates the operation signal based on a gas signal 8 generated by an exhaust gas sensor 9 arranged inside a ventilating fan main body being attached to the opening on the wall of the garage detecting the exhaust gas inside the garage. A sensor abnormality detecting means 12 generates an operation signal 10 when the change of the gas signal 8 with time is within a set range for the predetermined length of time or more and a power control means 14 applies power to a fan motor 4 to perform ventilation receiving the operation signal 10. Therefore the discharging of the exhaust gas can be performed securely when the exhaust gas cannot be detected due to the failure or clogging of the exhaust gas sensor 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garage ventilator for automatically venting exhaust gas from an automobile in a garage.

[0002]

2. Description of the Related Art In recent years, interest in improving indoor environment and air quality has been increasing, and the number of ventilation fans installed in houses and the improvement of ventilation systems have been advanced. However, the ventilation in the garage of the house is delayed, and there is also a poisoning accident due to the exhaust gas of the automobile. Therefore, it is desired to improve a ventilation device suitable for the garage.

Heretofore, this type of garage ventilator has generally been configured as shown in Japanese Utility Model Laid-Open No. 3-10133. Hereinafter, the configuration will be described with reference to FIG.

[0004] As shown in FIG.
00, a discharge unit 101 opening to the outside, and a ventilation means 10
And a harmful substance detection means 103 is provided in the inhalation unit 100. A detection signal detected by the harmful substance detection means 103 is sent to the control means 104, and the ventilation means 102 is controlled based on the detection signal. there were.

In the above configuration, the harmful substance detecting means 103 provided in the suction part 100 detects harmful substances such as exhaust gas, and based on the detection result, the control means 104 controls the ventilation means 102 provided in the discharge part 101 to operate. The exhaust gas was controlled and exhausted.

[0006]

In such a conventional garage ventilation system, if the harmful substance detection means 103 fails or becomes clogged, the exhaust gas cannot be detected, and the ventilation cannot be performed automatically. Further, if the distance from the exhaust gas generation source to the harmful substance detection means 103 is long, the time required for the exhaust gas to reach the harmful substance detection means 103 will be delayed, so that ventilation in accordance with the generation of the exhaust gas will occur. Can not do. Furthermore, when the amount of generated exhaust gas is very large compared to the exhaust capacity of the ventilation means 102, even if the harmful substance detection means 103 detects the exhaust gas and performs ventilation, the interior of the garage cannot be kept clean. There was a problem that.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is a first object of the present invention to provide a safe garage ventilation device capable of exhausting gas even when exhaust gas cannot be detected due to failure or clogging of a harmful substance detecting means. The purpose of.

A second object is to provide ventilation in accordance with the generation of exhaust gas even when the distance from the exhaust gas generation source to the harmful substance detection means 103 is large.

A third object is to keep the room clean even when the amount of exhaust gas generated is extremely large compared to the exhaust capacity.

[0010]

In the garage ventilating apparatus according to the present invention, an exhaust gas sensor provided inside a ventilating fan body which is opened and attached to a wall of the garage detects and generates exhaust gas of an automobile in the garage. An operation signal is generated based on the change in the direction of increase in the exhaust gas by the exhaust gas operation control means from the gas signal obtained, and when the time change of the gas signal falls within an arbitrary range for a certain time or more, the sensor abnormality detection means also outputs the operation signal. An operation signal is generated, and in response to the generation of the operation signal, the power control unit applies power to the fan motor to perform ventilation.

According to the present invention, it is possible to obtain an effect of performing exhaust even when exhaust gas cannot be detected due to failure or clogging of the exhaust gas sensor.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention provides a fan motor for discharging air in a garage to the outside of a garage inside a ventilation fan main body, and a gas signal for detecting exhaust gas of an automobile in the garage. An exhaust gas sensor that generates an exhaust gas operation control unit that generates an operation signal based on a change of a gas signal generated by the exhaust gas sensor in a direction in which the exhaust gas increases.
A sensor abnormality detecting means for generating an operation signal when a temporal change of a gas signal generated by the exhaust gas sensor falls within a predetermined range for a predetermined time or more, and an operation signal from the sensor abnormality detection means is input to a fan motor. Power control means for applying electric power, the exhaust gas sensor provided in the ventilation fan body detects the exhaust gas of the automobile in the garage, and the exhaust gas operation control means judges the increase of the exhaust gas and operates. A signal is generated, and ventilation is performed by applying power to the fan motor by the power control means using the operation signal as an input, and the temporal change of the gas signal generated by the exhaust gas sensor is kept within a predetermined range. An operation signal is generated from the sensor abnormality detection means even when the time has elapsed, and this operation signal is input to the power control means to supply power to the fan motor. Has the effect of ventilation is performed by applying to.

An embodiment of the present invention will be described below with reference to FIGS. (Embodiment 1) As shown in FIGS. 1 to 7, a fan motor 4 for discharging the air inside the garage 1 to the outside of the garage 1 inside a ventilation fan body 3 which is opened and attached to the wall surface 2 of the garage 1. A control circuit 5 for controlling the operation of the fan motor 4. Inside the control circuit 5, an exhaust gas sensor 9 for detecting the exhaust gas 7 of the automobile 6 in the garage 1 and generating a gas signal 8, Exhaust gas operation control means 11 for generating an operation signal 10 based on a change in the direction of increase of the exhaust gas 7 of the gas signal 8 generated by the sensor 9, and a temporal change of the gas signal 8 generated by the exhaust gas sensor 9 A sensor abnormality detecting unit 12 that generates an operation signal 10 when the operation signal 10 enters the range for a certain period of time or more; a power control unit 14 that applies the operation signal 10 to apply electric power from a commercial power supply 13 to the fan motor 4; It is provided. The engine 15 of the car 6 is parked in the garage 1 with the car 6 parked.
Is operated, exhaust gas 7 is generated.

Next, an exhaust gas sensor 9 based on FIG.
A method of detecting the exhaust gas 7 will be described.

The exhaust gas sensor 9 shown here is made of a material such as tin oxide, which can be used in a wide range of temperature and humidity conditions or an environment with a lot of dust, and can detect the exhaust gas 7 with a simple circuit configuration. It is a semiconductor type ceramic sensor.

When the exhaust gas sensor 9 is a semiconductor type ceramic sensor, when the sensor element 16 incorporated in the exhaust gas sensor 9 is heated to a high temperature state by a heater 17 and activated, the concentration of hydrogen and carbon monoxide in the exhaust gas 7 changes. The resistance value of the sensor element 16 changes in proportion. The change in the concentration of the exhaust gas 7 is determined from the change in the resistance value of the sensor element 16. Here, the voltage across the sensor element 16 when the voltage of the DC power supply 18 is divided by the sensor element 16 and the series resistor 19. The change indicates a change in the concentration of the exhaust gas 7, and this is used as the gas signal 8.

Next, referring to FIG.
The generation and stop of the operation signal 10 will be described.

FIG. 5 shows the change of the gas signal 8 and the operation signal 10 with time. The gas signal 8 is expressed such that the higher the vertical axis, the higher the concentration of the exhaust gas 7. is there.

Then, a temporal change of the gas signal 8 is constantly detected, and during a unit time (Δt) 20 set in a predetermined range, the gas signal 8 exceeds the exhaust gas generation judgment value (ΔVQ) 21 or more. When it changes, it is determined that the exhaust gas 7 is generated, and the generation of the operation signal 10 is started. Further, the value of the gas signal 8 at the time when the generation of the exhaust gas 7 is determined is changed to the initial value (VQ
S) 22 and the exhaust gas generation initial value (VQS) 22
The gas signal 8 indicates the operation signal stop judgment difference value (△ VQ
S) A value higher by 23 than the operation signal stop judgment value (VQe) 2
4, the remaining delay time (ts) from the time when the value of the gas signal 8 becomes smaller than the operation signal stop determination value (VQe) 24
After 25, the stop of the operation signal 10 is determined.

Here, the unit time (Δt) 20 is 10 seconds to 10 seconds based on the characteristic of the generation of the exhaust gas 7 of the automobile 6 inside the garage 1.
About 1 minute is desirable. In addition, the exhaust gas generation judgment value (△
VQ) 21 and the operation signal stop judgment difference value (△ VQS) 23 are resistance change characteristics of the sensor element 16 when the exhaust gas 7 is detected,
In addition, since the value varies with the value of the series resistor 19, the value needs to be determined based on an actual measurement test. The remaining delay time (ts) 25 also needs to be determined based on an actual measurement test because it varies depending on the ventilation air volume of the ventilation fan and the volume of the target garage 1, but is preferably about 5 to 15 minutes.

Next, the principle of sensor abnormality detection by the sensor abnormality detecting means 12 and generation and stop of the operation signal 10 will be described with reference to FIG.

FIG. 6 also shows the change of the gas signal 8 and the operation signal 10 with time, and the gas signal 8 is expressed such that the higher the vertical axis, the higher the exhaust gas 7 concentration. .

The temporal change of the gas signal 8 is always detected, and the fluctuation range of the gas signal 8 is within an abnormality determination signal range (VQa) 26 set within a predetermined range, and the abnormality determination is also set within a predetermined range. When the time (ta) is 27 or more, it is determined that the exhaust gas sensor 9 is abnormal, and the operation signal 10 is generated at this time.

Here, the abnormality determination signal range (VQa) 26
Is set to be greater than or equal to the fluctuation range of the gas signal 8 when the exhaust gas sensor 9 has failed or is clogged. The abnormality determination time (ta) 27 indicates that the fluctuation range of the gas signal 8 is The time is set based on the time when it can be determined that the exhaust gas sensor 9 is truly broken or clogged from the time when the exhaust gas sensor 9 enters the range (VQa) 26. Actually, it is necessary to determine it based on a measurement test. However, the abnormality determination time (ta) 27 is usually desirably about 30 minutes to 1 hour.

Next, the configuration of the circuit will be described with reference to FIG. The gas signal 8 of the exhaust gas sensor 9 is converted into a voltage by an A / D input terminal 29 of a microcomputer 28.
The gas signal 8 is converted from a change in an analog value, which is a voltage value, into a digital value that can be processed inside the microcomputer 28. The microcomputer 28 shown here includes a central processing unit (CPU), an input / output device, an analog / digital conversion input device (A / D), a read only memory (ROM), and a read / write memory (RA).
M) is a so-called one-chip microcomputer having a built-in M).

The microcomputer 28 has A
5 based on the gas signal 8 captured at the / D input terminal 29.
The determination processing of the exhaust gas operation control means 11 shown in FIG. 6 and the sensor abnormality detection means 12 shown in FIG. 6 are executed in the microcomputer 28, and the generation of the operation signal 10 is determined. Here, the operation signal 10 is expressed by the LO state of the output terminal 30 of the microcomputer 28, and when the generation of the operation signal 10 is determined inside the microcomputer 28, the output terminal 30 changes from the HI state to the LO state. It will be.

The operation signal 10 is transmitted to the power control means 1 next.
4 is input. The function of the power control means 14 is constituted by a bidirectional photothyristor 31 here, and when the output terminal 30 of the microcomputer 28 is turned to the LO state by the generation of the operation signal 10, the bidirectional photothyristor 3 is operated.
A current flows from the DC power supply 18 to one gate, and the bidirectional photothyristor 31 becomes conductive. When the bidirectional photothyristor 31 is turned on, electric power is applied to the fan motor 4 from the commercial power supply 13, so that the fan motor 4 is in an operating state.

In the above configuration, when the engine 15 of the automobile 6 is started and operated in the garage 1, exhaust gas 7 is generated, and the exhaust gas sensor 9 on the control circuit 5 built in the ventilation fan main body 3 detects the exhaust gas. 7, a change in the temporal concentration of a harmful substance such as carbon monoxide is sequentially detected. The change in the concentration of the exhaust gas 7 detected by the exhaust gas sensor 9 is input as a gas signal 8 to the exhaust gas operation control means 11 and the sensor abnormality detection means 12 which are constituted by the microcomputer 28 on the control circuit 5 and is supplied to the gas signal 8. The occurrence of the operation signal 10 is determined based on the temporal change of.

In the exhaust gas operation control means 11, the value of the gas signal 8 which is constantly detected is converted to the unit time (Δt) 20
If the exhaust gas generation judgment value (△ VQ) changes to 21 or more during the period, it is judged that the exhaust gas 7 has been generated, and the operation signal 10 is generated. After the operation signal 10 is generated, the value of the gas signal 8 becomes the operation signal stop judgment value. When (VQe) becomes smaller than 24, the operation signal 1 after the remaining delay time (ts) 25 from that point
0 will be stopped.

In the sensor abnormality detecting means 12, the fluctuation range of the value of the gas signal 8 which is constantly detected falls within the abnormality determination signal range (VQa) 26 within the abnormality determination time (ta) 2.
When the number is seven or more, it is determined that the exhaust gas sensor 9 is abnormal, and the operation signal 10 is generated.

When it is determined that the operation signal 10 has been generated, the output terminal 30 of the microcomputer 28 is turned to the LO state, and a current flows through the gate of the bidirectional photothyristor 31, which is the power control means 14, whereby the bidirectional photothyristor 31 is bidirectional. The photo thyristor 31 becomes conductive, and the electric power is applied to the fan motor 4 from the commercial power supply 13, so that the fan motor 4 is operated.

When the generation of the operation signal 10 is stopped, the output terminal 30 of the microcomputer 28 is set to the HI state, so that no current flows from the DC power supply 18 to the gate of the bidirectional photothyristor 31, which is the power control means 14. Then, the bidirectional photothyristor 31 is turned off, and the electric power from the commercial power supply 13 is not applied to the fan motor 4, so that the fan motor 4 stops.

When the fan motor 4 is operated, the ventilation fan starts the exhaust of the automobile 6 inside the garage 1 to start exhausting.
While the exhaust gas 7 is being generated from the garage 1, the exhaust gas 7 generated inside the garage 1 is automatically exhausted, and the automobile 6 departs from the interior of the garage 1 or the engine 15 of the automobile 6 is stopped and exhausted. When the concentration of the exhaust gas 7 inside the garage 1 is sufficiently reduced due to the stoppage of the generation of the gas 7, the fan motor 4 stops and the exhaust of the ventilation fan also stops.

Further, even when the temporal fluctuation width of the gas signal 8 output from the exhaust gas sensor 9 becomes small, the abnormality of the exhaust gas sensor 9 is detected by the sensor abnormality detecting means 12.
The ventilation fan exhausts air to generate the operation signal 10 and put the fan motor 4 into the operation state.

As described above, according to the garage ventilation device of the first embodiment of the present invention, the exhaust gas sensor 9 detects the generation of the exhaust gas 7 inside the garage 1 and the ventilation fan is automatically operated and Even when the exhaust gas sensor 9 cannot detect the exhaust gas 7 due to a failure or clogging, the ventilation fan is automatically operated, so that the exhaust function of the ventilation fan is secured.

(Embodiment 2) As shown in FIGS. 8 to 10, the operating state of the engine 15 is detected and determined inside the automobile 6, and if the engine 15 is operating, the engine 15 is mounted outside the automobile 6. Engine operation signal 3
2 is provided, and the control circuit 5 inside the ventilation fan main body 3 receives the engine operation signal 32 transmitted by the engine operation state transmission means 33 and operates while receiving the engine operation signal 32. An engine operating state receiving means 34 for generating a signal 10 is provided.

Here, as shown in FIG. 9, the engine operating state transmitting means 33 is provided with the ignition device 3 for the engine 15 of the automobile 6.
The microcomputer 28 determines the presence or absence of an ignition voltage signal generated by the microcomputer 5, and the microcomputer 47 determines that the engine 15 is operating when the ignition voltage signal is generated. An engine operation signal 32 is transmitted to the outside of the automobile 6 via the vehicle. Also, the radio wave signal transmitter 39 is preferably of a weak power transmission type, and transmits the engine operation signal 32 in a short distance (around 5 m) range. The microcomputer 47 shown here is also a central processing unit (CPU),
Input / output device, analog / digital conversion input device (A /
D), a so-called one-chip microcomputer incorporating a read only memory (ROM) and a read / write memory (RAM).

As shown in FIG. 9, the engine operating state receiving means 34 comprises a radio wave signal receiver 40 for receiving an engine operation signal 32, which is a radio wave signal, and the microcomputer 28. When the microcomputer 28 receives the engine operation signal 32, the microcomputer 28 determines that the engine 15 of the automobile 6 is in an operation state and generates the operation signal 10. The microcomputer 28 constituting the engine operating state receiving means 34 is similar to the microcomputer 28 constituting the exhaust gas operation control means 11 and the sensor abnormality detecting means 12.

Next, the generation of the operation signal 10 of the engine operation state receiving means 34 will be described in detail with reference to FIG.

When the engine operating state receiving means 34 receives the engine operating signal 32 transmitted from the engine operating state transmitting means 33, it determines that the engine 15 of the automobile 6 is in the operating state and starts generating the operating signal 10. While receiving the engine operation signal 32, it is determined that the engine 15 of the automobile 6 is in an operation state, and the generation of the operation signal 10 is continued. Further, when the engine 15 of the automobile 6 is stopped after the generation of the operation signal 10 and the generation of the engine operation signal 32 from the engine operation state transmitting means 33 is stopped, or when the automobile 6 departs from the garage 1, the engine operation is started. When the engine operation signal 32 reaching the state receiving means 34 is attenuated and the engine operation state receiving means 34 cannot detect the generation of the engine operation signal 32, it is determined that the engine 15 of the automobile 6 is stopped. By stopping the operation signal 10 after the remaining delay time (ts) 25 from the time point, the necessary and sufficient ventilation time is secured.

In the above configuration, when the engine 15 of the automobile 6 inside the garage 1 is started and the engine 15 is in an operating state, an engine operating signal 32 is transmitted from the engine operating state transmitting means 33 to the outside of the automobile 6, and The engine operation signal 32 transmitted from the engine operation state transmission unit 33 is received by the engine operation state reception unit 34 configured on the control circuit 5 of the ventilation fan main body 3.

When the engine operating state receiving means 34 receives the engine operating signal 32, the engine operating state receiving means 34 generates an operating signal 10 to the power control means 14. In response to generation of operation signal 10, power control means 14
The fan motor 4 is operated to apply electric power from the commercial power supply 13 to the fan motor 4.

When the engine 15 of the vehicle 6 is stopped after the generation of the driving signal 10, the engine operating state transmitting means 33 stops transmitting the engine operating signal 32, or when the vehicle 6 leaves the garage 1. If the engine operation signal 32 arriving at the engine operation state receiving means 34 is attenuated due to the distance between the ventilation fan main body 3 and the car 6 being increased, the engine operation signal receiving means 34 cannot detect the engine operation signal 32. The receiving means 34 stops generating the operation signal 10 for the power control means 14 after the residual delay time (ts) 25, and when the operation signal 10 stops, the power control means 14 applies the power from the commercial power supply 13 to the fan motor 4. To stop, the fan motor 4 stops.

When the fan motor 4 is operated, the ventilating fan starts the automobile 6 inside the garage 1 to start exhausting.
While the engine 15 is in the driving state, the exhaust gas 7 generated inside the garage 1 is automatically exhausted, and the automobile 6 is taken out of the garage 1 or the engine 15 of the automobile 6 is discharged.
When the concentration of the exhaust gas 7 inside the garage 1 is sufficiently reduced after the stoppage of the exhaust gas 7 and the generation of the exhaust gas 7 are stopped, the exhaust of the ventilation fan also stops because the fan motor 4 stops.

As described above, according to the garage ventilation device of the second embodiment of the present invention, the ventilation fan automatically exhausts while the engine 15 of the automobile 6 inside the garage 1 is operating. Even when the distance between the source of the exhaust gas 7 and the exhaust gas sensor 9 is far, ventilation in accordance with the generation of the exhaust gas 7 can be performed.

(Embodiment 3) As shown in FIGS. 11 to 13, the control circuit 5 inside the ventilation fan main body 3 controls the time of the gas signal 8 generated by the exhaust gas sensor 9 in the increasing direction of the exhaust gas 7. An abnormal state transmitting means 37 for transmitting an abnormal exhaust gas signal 36 by judging the generation of the high concentration abnormal exhaust gas 7 from the change, and an abnormal exhaust gas signal transmitted by the abnormal state transmitting means 37 inside the automobile 6 An abnormal engine stop receiving means 38 for stopping the engine 15 of the automobile 6 when receiving the command 36 is provided.

Here, the abnormal state transmitting means 37 receives the gas signal 8 generated by the exhaust gas sensor 9 as an input as shown in FIG. And an abnormal exhaust gas signal in the form of a radio wave signal via a radio wave signal transmitter when the microcomputer judges the generation of a high concentration of abnormal exhaust gas. It is configured to transmit to the outside of the ventilation fan main body 3. The microcomputer 28 constituting the engine operating state receiving means 34 is similar to the microcomputer 28 constituting the exhaust gas operation control means 11 and the sensor abnormality detecting means 12. Note that the radio wave signal transmitter 48 is also preferably of a weak power transmission type, and transmits the abnormal exhaust gas signal 36 in a short distance (around 5 m).

Here, the abnormal engine stop receiving means 38 comprises a radio wave signal receiver 49 for receiving the abnormal exhaust gas signal 36 which is a radio wave signal and a microcomputer 50 as shown in FIG. When 49 receives the abnormal exhaust gas signal 36, the microcomputer 50 determines that the high-concentration abnormal exhaust gas 7 is being generated, and
The ignition device 35 is stopped and the engine 15 is forcibly stopped. The microcomputer 50 shown here also includes a central processing unit (CPU), an input / output device, and an analog / digital conversion input device (A / D).
D), a so-called one-chip microcomputer incorporating a read only memory (ROM) and a read / write memory (RAM).

Next, the generation of the abnormal exhaust gas signal 36 of the abnormal state transmitting means 37 will be described in detail with reference to FIG. FIG. 13 shows changes of the gas signal 8 and the operation signal 10 with time.

A temporal change of the gas signal 8 is constantly detected, and a gas signal average value (VQR) 41 which is an average value of a fluctuation range of the gas signal 8 is calculated. This gas signal average value (VQ
R) 41, an abnormality determination value (△ VQB) 42 is set to a predetermined value in the direction in which the gas signal 8 becomes high concentration, and this abnormality determination value (△ VQB) 42 is added to the gas signal average value (VQR) 41. When the value of the current gas signal 8 becomes larger than the value obtained, it is determined that abnormal exhaust gas 7 having a high concentration has been generated, and an abnormal exhaust gas signal 36 is generated.

Here, the abnormality judgment value (△ VQB) 42 is determined by the gas signal 8 in the clean air detected by the exhaust gas sensor 9 and the carbon monoxide contained in the exhaust gas 7 when the exhaust gas 7 is generated. Concentration (about 200 pp
m is harmful to the human body at concentrations above m)
It is set based on the difference between the value of the gas signal 8 and the corresponding value at the time of the above, and changes depending on the resistance characteristic of the exhaust gas sensor 9, the carbon monoxide detection characteristic, and the value of the series resistance 18. It is necessary to make a determination by actually performing a measurement test.

In the above-described configuration, when the engine 15 of the automobile 6 is started inside the garage 1 and is put into an operation state, exhaust gas 7 starts to be generated. The generated exhaust gas 7 is supplied to the control circuit 5 built in the ventilation fan main body 3. The exhaust gas sensor 9 is configured to constantly detect changes in the temporal concentration of harmful substances such as carbon monoxide in the exhaust gas 7, and the operation of the fan motor 4 is determined by the exhaust gas operation control means 11. The average value (VQR) 41 of the gas signal is calculated from the fluctuation range of the gas signal 8 by the abnormal state transmitting means 37 while performing the above, and the current value of the gas signal 8 is judged to be abnormal with respect to the average value (VQR) 41 of the gas signal. It is constantly monitored whether the value does not exceed the value (△ VQB) 42.

When the concentration of the exhaust gas 7 rises, the fan motor 4 is operated according to the judgment of the exhaust gas operation control means 11, and the ventilating fan starts exhausting. When the concentration of the gas 7 rises and the gas signal 8 becomes equal to or greater than the abnormality judgment value (△ VQB) 42 with respect to the gas signal average value (VQR) 41, the abnormal state transmitting means 37 generates abnormal high concentration exhaust gas 7. Then, the abnormal exhaust gas signal 36 is transmitted to the outside of the ventilation fan main body 3 via the radio wave signal transmitter 48 constituting the abnormal state transmitting means 37.

When the abnormal exhaust gas signal 36 is transmitted from the radio wave signal transmitter 48 and received by the radio wave signal receiver 49 constituting the abnormal engine stop receiving means 38 provided in the automobile 6, the abnormal The microcomputer 50 constituting the engine stopping means determines that the abnormal exhaust gas 7 having a high concentration is being generated, so that the ignition device 35 is stopped and the operation of the engine 15 is forcibly stopped.

As described above, according to the garage ventilation device of the third embodiment of the present invention, when the exhaust gas 7 in the garage 1 has a high concentration despite the exhaust of the ventilation fan, the vehicle 6 is forcibly forced. Since the generation of the exhaust gas 7 is stopped by stopping the engine 15, the interior of the garage 1 can be kept clean even when the amount of the generated exhaust gas 7 is extremely large.

(Embodiment 4) As shown in FIGS. 14 to 16, the time in the direction of increase of the exhaust gas 7 of the gas signal 8 generated by the exhaust gas sensor 9 is provided on the control circuit 5 inside the ventilation fan main body 3. An abnormal state transmitting means 37 for transmitting the abnormal exhaust gas signal 36 by judging the generation of the high concentration abnormal exhaust gas 7 based on the change of the exhaust gas 7, and an electric shutter 43 for opening and closing the entrance of the garage 1. And an abnormal shutter opening receiving means for operating the shutter motor to open the shutter when the abnormal exhaust gas signal transmitted from the internal abnormal state transmitting means is received.

Here, as shown in FIG. 16, the abnormal shutter open receiving means 46 determines the reception result of the radio wave signal receiver 51 which receives the abnormal exhaust gas signal 36 which is a radio wave signal and the reception result of the radio wave signal receiver 51. A microcomputer 52 and a shutter motor control device 47 controlled by the microcomputer 52 to operate the shutter motor 44 of the electric shutter 43 in a direction in which the shutter 45 opens. When the radio wave signal receiver 51 receives the abnormal exhaust gas signal 36, Microcomputer 5
Reference numeral 2 denotes a configuration in which the occurrence of abnormal exhaust gas 7 having a high concentration is determined, and the shutter motor 44 is operated by the shutter motor control device 47 in the direction in which the shutter 45 opens. The microcomputer 52 shown here is also a central processing unit (CPU), an input / output device, an analog / digital conversion input device (A / D), a read only memory (ROM), a read / write memory (RAM).
This is a so-called one-chip microcomputer having a built-in microcomputer.

In the above configuration, when the engine 15 of the automobile 6 is started and operated in the garage 1, exhaust gas 7 starts to be generated. The generated exhaust gas 7 is supplied to the control circuit 5 built in the ventilation fan main body 3. The exhaust gas sensor 9 constantly detects the change in the temporal concentration of harmful substances such as carbon monoxide in the exhaust gas 7 sequentially, and the exhaust gas operation control means 11 determines the operation of the fan motor 4. As described with reference to FIG. 13, the abnormal state transmitting means 37 uses the gas signal average value (VQR) from the fluctuation range of the gas signal 8.
41, and the current value of the gas signal 8 is compared with the gas signal average value (VQR) 41 by the abnormality determination value (△ VQB) 4
It is constantly monitored to see if it changes by more than one.

When the concentration of the exhaust gas 7 rises, the fan motor 4
Is in the operating state, and the ventilation fan starts exhausting, but the exhaust gas 7 concentration further rises despite the exhausting, and the gas signal 8 generated by the exhaust gas sensor 9 becomes the gas signal average value (VQR) 41. On the other hand, the abnormality judgment value (△ VQB) 42
Above, the abnormal state transmitting means 37 determines that the high concentration abnormal exhaust gas 7 is generated, and
The abnormal exhaust gas signal 36 is transmitted to the outside of the ventilation fan main body 3 via the radio wave signal transmitter 48 constituting the unit 7.

The abnormal exhaust gas signal 36 is transmitted from the radio wave signal transmitter 48 and
When received by the radio wave signal receiver 51 constituting the abnormal shutter open receiving means 46 formed in the main body 3, the microcomputer 52 constituting the abnormal shutter open receiving means 46 generates abnormal exhaust gas 7 of high concentration. The electric shutter 43 is opened in order to control the shutter motor control device 47 to operate the shutter motor 44 so that the shutter 45 opens.

As described above, according to the garage ventilation apparatus of the fourth embodiment of the present invention, the electric shutter is forcibly forced when the exhaust gas 7 in the garage 1 has a high concentration despite the exhaust of the ventilation fan. By opening the shutter 45 of 43 and increasing the intake opening area to lower the intake resistance, even when the generation amount of harmful substances is extremely large, the inside of the garage 1 is kept cleaner than the state where the shutter 45 is closed. be able to.

[0062]

As described above, according to the present invention, when the value of the gas signal of the exhaust gas sensor does not change due to failure or clogging, the abnormality of the exhaust gas sensor is judged by the sensor abnormality detecting means. A safe garage ventilator can be provided in which the ventilation motor is automatically exhausted because the fan motor is in operation.

The engine operating state is transmitted as an engine operating signal by an engine operating state transmitting means mounted on the automobile, and when the engine operating signal is received by the engine operating state receiving means built in the ventilation fan main body, the fan motor is driven. Since the vehicle is driven, ventilation is immediately performed when the engine of the vehicle is driven, regardless of the detection of the exhaust gas by the exhaust gas sensor.

When the exhaust gas is detected, the ventilation is automatically performed. When the exhaust gas concentration rises abnormally in spite of the ventilation, the abnormal state transmission means provided in the ventilation fan body sends the abnormal exhaust. Send a gas signal,
When this abnormal exhaust gas signal is received by the abnormal engine stop receiving means mounted on the automobile, the engine is forcibly stopped, so that the garage is kept clean even when the amount of generated exhaust gas is extremely large. be able to.

When the exhaust gas is detected, the ventilation is automatically performed. When the exhaust gas concentration rises abnormally in spite of the ventilation, the abnormal state transmission means provided in the ventilation fan main body provides the abnormal exhaust. Send a gas signal,
When this abnormal exhaust gas signal is received by the abnormal shutter opening reception means mounted on the electric shutter of the garage, the shutter motor operates to open the shutter, the opening area for intake increases, and the electric shutter is closed. On the other hand, the garage can be kept clean even when the amount of generated exhaust gas is very large because the amount of ventilation air is large.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a ventilation fan main body of a garage ventilation device according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of a garage showing a construction state of the garage ventilation device according to the first embodiment;

FIG. 3 is a block diagram of a garage ventilation device according to the first embodiment;

FIG. 4 is a circuit diagram showing a circuit configuration of an exhaust gas sensor of the garage ventilation device according to the first embodiment;

FIG. 5 is an explanatory diagram of an operation signal generation judgment of the exhaust gas operation control means of the first embodiment.

FIG. 6 is an explanatory diagram of an operation signal generation determination of a sensor abnormality detection unit according to the first embodiment.

FIG. 7 is a circuit diagram showing a schematic circuit configuration of the garage ventilation device of the first embodiment;

FIG. 8 is a block diagram of a garage ventilation device according to the second embodiment;

FIG. 9 is a circuit diagram showing a schematic circuit configuration of the garage ventilation device according to the second embodiment;

FIG. 10 is an explanatory diagram of an operation signal generation judgment of the engine operation state receiving means of the second embodiment.

FIG. 11 is a block diagram of a garage ventilation device according to the third embodiment.

FIG. 12 is a circuit diagram showing a schematic circuit configuration of a garage ventilation device according to the third embodiment;

FIG. 13 is an explanatory diagram of an abnormal exhaust gas signal generation judgment of the abnormal state transmitting means of the third embodiment.

FIG. 14 is a block diagram of a garage ventilation device according to the fourth embodiment.

FIG. 15 is a schematic diagram of a garage showing a construction state of the garage ventilation device according to the fourth embodiment.

FIG. 16 is a circuit diagram showing a schematic circuit configuration of a garage ventilation device according to the fourth embodiment;

FIG. 17 is a perspective view showing a configuration of a conventional garage ventilation device.

[Description of Signs] 1 Garage 3 Ventilation Fan Main Body 4 Fan Motor 6 Automobile 7 Exhaust Gas 8 Gas Signal 9 Exhaust Gas Sensor 10 Operation Signal 11 Exhaust Gas Operation Control Means 12 Sensor Abnormality Detection Means 14 Power Control Means 15 Engine 32 Engine Operation Signal 33 Engine operating state transmitting means 34 Engine operating state receiving means 36 Abnormal exhaust gas signal 37 Abnormal state transmitting means 38 Abnormal engine stop receiving means 43 Electric shutter 45 Shutter 46 Abnormal shutter open receiving means

Claims (4)

[Claims] 1. A ventilation fan main body which is opened and attached to a wall of a garage, a fan motor provided inside the ventilation fan main body so as to discharge air in the garage to the outside of the garage, and detects exhaust gas of an automobile in the garage. An exhaust gas sensor that generates a gas signal, exhaust gas operation control means that generates an operation signal based on a change in the direction of increase in the exhaust gas of the gas signal detected by the exhaust gas sensor, and a gas detected by the exhaust gas sensor. Sensor abnormality detection means for generating an operation signal when a temporal change of a signal falls within a predetermined range for a predetermined time or more, and power control means for applying power to the fan motor, wherein the sensor abnormality detection means A garage ventilation device configured to control operation of the fan motor by inputting an operation signal. 2. An engine operating state transmitting means for transmitting an operating state of an engine as an engine operating signal to an automobile, wherein the engine operating state receiving means generates an operating signal when the engine operating signal is received inside the ventilation fan body. The garage ventilation device according to claim 1, further comprising means. 3. An abnormal state transmitting means for transmitting an abnormal exhaust gas signal when a value of a temporal change of a gas signal detected by an exhaust gas sensor in an exhaust gas increasing direction changes to a predetermined value or more. 2. The garage ventilation device according to claim 1, further comprising: an abnormal engine stop receiving unit that stops the engine when the vehicle receives the abnormal exhaust gas signal transmitted by the abnormal state transmitting unit. 4. An electric shutter for opening and closing an entrance of a garage, comprising an abnormal shutter opening receiving means for forcibly opening the shutter when receiving an abnormal exhaust gas signal transmitted from an abnormal state transmitting means built in the ventilation fan body. The garage ventilation device according to claim 1.