JP2000291248A - Air-supply-exhaust system of apartment house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the air-supply-exhaust system of an apartment house in which a common air-supply-exhaust duct can be used completely at a low cost. SOLUTION: An exhaust fan 5a in which an operating state is monitored is installed at the top section of a common air-supply-exhaust duct, radio is transmitted to receivers attached to gas meters 8 of each residence with gas equipments 6 related to the exhaust fan 5a and a receiver 19 for a manager room 18 from radio transmitters, cutoff valves attached to the gas meters are interrupted when the gas meters 8 receive the radio, and a building management company is informed of the stop of the exhaust fan 5a through a telephone line from an NCU 20 when the receiver 19 for the manager room 18 receives the radio.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air supply / exhaust system for an apartment house.

[0002]

2. Description of the Related Art In an apartment house equipped with a common supply / exhaust duct, large-sized gas appliances for bath water supply / heating, etc. are of a balanced type, and the supply of air is performed through a common supply / exhaust duct, and the exhaust is shared. It is discharged to the air supply / exhaust duct. Exhaust from the kitchen is also discharged to the common supply / exhaust duct through the ventilation fan. An exhaust fan is provided at the top of the common supply / exhaust duct to supply and exhaust air sufficiently.

[0003] If the exhaust fan stops, sufficient air supply and exhaust are not performed, and large-sized gas appliances become incompletely combusted and generate CO, which enters the house from unused ventilation fan gaps. There is a risk. To prevent this, the manager monitors the exhaust fan every hour, for example, so that the exhaust fan does not stop.
However, if managers work late at night, labor costs increase.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air supply / exhaust system for an apartment house in which a common air supply / exhaust duct can be used safely and at low cost.

[0005]

SUMMARY OF THE INVENTION The present invention relates to an exhaust fan provided at the top of a common air supply / exhaust duct in an apartment house having a common air supply / exhaust duct, and a monitoring means for monitoring an operation state of the exhaust fan. When the monitoring unit detects the stop of the exhaust fan, the wireless communication unit includes a wireless transmitting unit that transmits a wireless signal, a receiving unit that receives the wireless signal generated by the wireless generating unit, and a shutoff valve that shuts off when the wireless signal is received. An air supply / exhaust system for a condominium, comprising: a gas meter; and a transmitting means for transmitting a radio generated by the radio generating means to a building management company through a telephone line.

According to the present invention, the operating state of the exhaust fan is constantly monitored, and when it stops, the shut-off valve provided in the gas meter is shut off by radio. No dangerous gas such as CO is generated in the exhaust duct. Since the information that the exhaust fan has stopped is transmitted to the building management company, there is no need for the manager to work 24 hours a day.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail by embodiments of the present invention.

FIG. 1 is a sectional view schematically showing an apartment house 1 having an air supply / exhaust system according to an embodiment of the present invention. The apartment house 1 is provided with common supply / exhaust ducts 2a and 2b (collectively 2), and the lower end 3 is open. Exhaust fans 5 a and 5 b (collectively referred to as 5) are provided at the upper end 4, and air is sucked from the lower part of the common supply / exhaust duct 2 by the exhaust fan 5 and discharged from the upper end 4. The common air supply / exhaust duct 2 is connected to the common air supply / exhaust unit 7 of the balance type equipment 6 in each house. The city gas measured by the gas meter is supplied to the common air supply / exhaust duct 2, and the exhaust gas is discharged to the common air supply / exhaust duct 2. In addition, kitchen exhaust (not shown) is exhausted to the common supply / exhaust duct 2 via a ventilation fan.

FIG. 2 is a side view of the exhaust fan 5. The rotational force of the motor 10 is transmitted to the blade 12 via the shaft 11, and the rotation state of the blade 12 is constantly monitored by the tachometer 13. When the rotation of the blades 12 stops, the radio transmitter 14 transmits radio waves.

FIG. 3 shows a gas meter 8 provided in each house.
FIG. The gas meter 8 has a measuring section 8a and a mechanical section 8
The measuring unit 8a measures the amount of fuel gas consumed in each house. The mechanism unit 8b includes a wireless receiving unit 15 and a shut-off valve operating unit 16. When the wireless receiving unit 15 receives information that the exhaust fan 5 has stopped, it sends a signal to the shut-off valve operating unit 16 to turn off the shut-off valve 17. Cut off. In addition, the mechanism unit 8b also detects the information that a large earthquake has occurred, the information that the gas is flowing abnormally much, and the information that the gas pressure has dropped abnormally.
Block 7

When the exhaust fan 5a stops, the shut-off valve attached to the gas meter (the gas meter indicated by M in FIG. 1) of each house related to the common supply / exhaust duct 2a shuts off, and the common supply / exhaust duct 2b is connected. Radios transmitted from the radio transmitters 14a and 14b have different frequencies so that a shut-off valve attached to a gas meter (not shown in FIG. 1) of the house is not shut off.

The radio from the radio transmitter 14 is also received by the radio receiver 19 in the manager's office 18 and the NCU (Networ
k Control Unit) 20 and transmitted to the building management company via a telephone line. The working hours of the manager are handled by the manager according to the information that the NCU switch is turned off and the exhaust fan 5 is stopped received by the wireless receiver 19, and when the management cannot be performed, the building manager is contacted by telephone.

[0013]

As described above, according to the present invention, the operation state of the exhaust fan is constantly monitored, and if the operation is stopped, the supply of fuel gas to each house related to the exhaust fan is provided in the gas meter. Since it is shut off by the shutoff valve, incomplete combustion due to poor exhaust does not occur, and the safety of the supply and exhaust system in the apartment house can be ensured. Further, since the information that the exhaust fan has stopped is transmitted to the building management company via the telephone line, it is not necessary to have a manager on duty.

[Brief description of the drawings]

FIG. 1 is a sectional view of an apartment house 1 having an air supply / exhaust system according to an embodiment of the present invention.

FIG. 2 is a side view of the exhaust fan 5;

FIG. 3 is a front view of a gas meter 8 used in each house.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Apartment house 2 Common supply / exhaust duct 5 Exhaust fan 6 Balanced gas equipment 7 Supply / exhaust unit 8 Gas meter 14 Wireless transmission unit 15 Wireless reception unit of gas meter 16 Shut-off valve operation unit 17 Shut-off valve 18 Management room 19 Management room wireless Receiving unit 20 NCU

Claims (1)

[Claims] In an apartment house provided with a common supply / exhaust duct, an exhaust fan provided at the top of the common supply / exhaust duct, monitoring means for monitoring an operation state of the exhaust fan, and the monitoring means for stopping the exhaust fan A gas meter having a radio transmitting means for transmitting a radio when detected, a receiving means for receiving a radio generated from the radio generating means, a shutoff valve for shutting off when the radio is received, and a gas generated by the radio generating means Transmission means for transmitting the transmitted radio to a building management company through a telephone line.