JPH10205751A - Indoor ventilation control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transmit the operating state of a ventilating device to a combusting device by radio by a method wherein a ventilating motion signal is transmitted to the ventilating device, and a combustion operation is performed only when a ventilation normal signal to show that a ventilating motion is normally performed, is returned. SOLUTION: A rotation control means 28 transmits a ventilation normal signal to a radio communication unit 24 which is provided in a hot air heater 1 through a radio communicating means 2 judging that an indoor ventilation is normally performed, when it is detected by an air pressure detecting means 30 that the flow rate of air generated by the rotation of a fan 26 is a specified value or higher. When a heating control means 23 receives the ventilation normal signal from the radio communicating means 2 which is connected with the ventilating device 3, through the radio communicating unit 24, a heating operation is started. Thus, the transmitting/receiving of the signal between the hot air heater (combustion apparatus) 1 and the ventilating device 3, is performed by radio, and the degree of freedom for the selection of an installation place can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control signal output from an open combustion device such as a gas fan heater.
The present invention relates to an indoor ventilation control device that operates a ventilation device to perform indoor ventilation.

[0002]

2. Description of the Related Art In an open-type combustion apparatus such as a gas fan heater, a burner and a convection fan are provided in a main body case disposed in a room, and the convection fan convects indoor air. A device that heats indoor air by combustion heat is known. In this type of open-type combustion equipment, the combustion gas generated by the combustion of the burner is exhausted into the room, so that the room air must be periodically ventilated when used continuously for a long time.

Conventionally, in order to periodically ventilate room air, a combustion device and a ventilation device such as a ventilation fan are connected by a signal transmission path, and a room for driving the ventilation device in accordance with a drive signal output from the combustion device. Ventilation control devices are known. According to this indoor ventilation control device, since the drive signal of the ventilation device is output from the combustion device, even if the user forgets to ventilate the room, for example, when the combustion device is operated for one hour, the ventilation device is activated. Room ventilation can be performed periodically according to preset conditions such as driving for 5 minutes.

Then, by detecting a load current flowing through the fan motor of the ventilation fan, the rotation state of the fan motor is detected. When the fan motor is not rotating normally, the supply of fuel to the combustion equipment is stopped. Then, there is known an apparatus in which the combustion operation of the combustion apparatus is stopped (Japanese Patent Publication No. 61-30169). However, in this example, since the signal transmission path is wired, troublesome wiring work is required, and the installation positions of the combustion equipment and the ventilation fan cannot be freely selected.

[0005] Further, ventilation O from the combustion equipment to the ventilation device is required.
It is known that the transmission of the N / OFF signal is performed wirelessly, thereby eliminating the trouble of wiring work and increasing the degree of freedom of installation of a combustion device and a ventilation device (Japanese Utility Model Application Laid-open No. Sho 5).
No. 6-78931). However, in this case, since only one-way signal transmission from the combustion device to the ventilation device is performed, it is not possible on the combustion device side to confirm whether the ventilation device actually receives the drive signal from the combustion device. Also, it cannot be confirmed whether the ventilator actually started operating.

Therefore, when the ventilator breaks down,
If the drive signal is output from the combustion device to the ventilator when the signal transmission path is cut off, there is an inconvenience that the combustion device continues the combustion operation while the ventilator is not operating. Was.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an indoor ventilation control device capable of solving the above-mentioned inconvenience and transmitting an operating state of a ventilation device to a combustion device by radio.

[0008]

In order to achieve the above object, the present invention provides a fan, a fan motor for rotating the fan, and wireless communication means for transmitting and receiving signals wirelessly to and from an external device. A ventilating device including: a rotation control unit connected to the wireless communication unit for controlling rotation of the fan motor in accordance with a signal input to the wireless communication unit; and a ventilation operation detection unit for detecting a ventilation operation state of the fan. And a function of transmitting and receiving signals to and from the ventilator by radio, transmitting a ventilation operation signal to the ventilator, and a ventilation normal signal indicating that the ventilation operation is normally performed from the ventilator. And an open-type combustion device that performs a combustion operation only when is returned.

According to the present invention, the combustion equipment includes:
When starting the combustion operation or during the combustion operation, it can be confirmed that the ventilator is performing the ventilation operation normally. Therefore, when the ventilator is in a state where it cannot perform a normal operation, it is possible to prevent the combustion device from performing the combustion operation, and that the ventilator operates normally during the combustion operation of the combustion device. When the operation cannot be performed, the combustion operation can be stopped. Since the transmission and reception of signals between the combustion equipment and the ventilation device are performed wirelessly, the degree of freedom in selecting an installation location can be increased.

[0010] Also, a fan, a fan motor for rotating the fan, a home automation terminal, rotation control means for controlling the rotation of the fan motor in accordance with a signal input to the home automation terminal, A ventilation device having ventilation operation detection means for detecting a ventilation operation state, and an external device connected to the ventilation device via the home automation terminal and converting a signal output from the home automation terminal into a radio signal to an external device And a wireless communication means for receiving a wireless signal transmitted from an external device and converting the received wireless signal into a signal form that can be input to a home automation terminal, and a function of wirelessly transmitting and receiving signals to and from the wireless communication means Transmitting a ventilation operation signal to the ventilator via the wireless communication means, and Characterized by comprising the open combustion device that performs combustion operation only when the ventilation normal signal which indicates that the ventilating operation through the communication means is performed normally is returned.

[0011] Today, ventilators with home automation terminals are widely available. The ventilator can perform two-way communication with another device via a home automation terminal. Therefore, for example, it is possible to start / stop the ventilation operation by receiving an operation start / stop signal from the external device, and to output a normal signal indicating that the ventilator is operating normally to the external device. Can be sent to

Therefore, when a ventilator provided with a home automation terminal is already installed, the ventilator and the wireless communication means of the present invention are simply connected via the home automation terminal of the ventilator. The combustion equipment can remotely control the start / stop of the ventilation operation of the ventilator by radio, and can receive the normal signal from the ventilator by radio. Therefore, it is possible to perform the ventilation operation by the ventilation device in conjunction with the combustion operation of the combustion device without newly installing a dedicated ventilation device.

[0013] The wireless communication means includes a battery as a power supply. By using a battery as the power source of the wireless communication unit, wiring work for using a household AC power source as a power source of the wireless communication unit becomes unnecessary,
The wireless communication means can be easily installed.

[0014]

FIG. 1 shows an example of an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 is a block diagram of the indoor ventilation control device of the present invention, and FIGS. 2 and 3 are flowcharts showing the operation of the indoor ventilation control device shown in FIG.

Referring to FIG. 1, an indoor ventilation control device according to the present embodiment includes a gas hot air heater 1 which is an open-type combustion device,
It comprises a wireless communication means 2 for transmitting and receiving signals to and from the hot air heater 1 wirelessly, and a ventilator 3 connected to the wireless communication means 2 for transmitting and receiving signals to and from the wireless communication means 2 by wire.

The warm air heater 1 includes a combustion chamber 6 in which a combustion section 5 as a heat source is housed in a main body case 4, a heat exchange section 7 connected to the combustion chamber 6, and indoor air through a heat exchange section. A convection fan 8 for convection is provided. The combustion part 5 in the combustion chamber 6 is constituted by a plurality of gas burners 11 arranged opposite to a plurality of nozzles 10 connected to a gas supply pipe 9 piped from the outside of the main body case 4. Each gas burner 11 sucks and mixes the fuel gas supplied from each nozzle 10 and the combustion air introduced into the combustion chamber 6, and jets out the air-fuel mixture from the tip to burn it.
In the combustion chamber 6, there are provided a sparker 12 arranged near the tip of the gas burner 11 for igniting the gas burner, and a flame detection sensor 13 for detecting an ignition error or misfire of the gas burner 11. The gas supply pipe 9 is provided with two open / close electromagnetic valves 14 and 15 and an electromagnetic proportional valve 16.

The convection fan 8 is provided in the main body case 4 so as to face the suction port 17, and is connected to the convection fan motor 18. The convection fan 8 sucks the indoor air through the suction port 17 by the rotation thereof, and sends out the sucked air to the ventilation passage 19 in the main body case 4 together with the combustion gas of the gas burner 11. By blowing air into the room from the formed air outlet 20, the room air is convected. A room temperature sensor 21 for detecting the temperature (room temperature) of room air sucked by the convection fan 8 is provided in the main body case 4 so as to face the suction port 17.

The warm air heater 1 includes a heating control means 23 for controlling the heating operation in response to a heating operation start / stop signal input by the user via the operation panel 22. The heating control means 23 is constituted by an electronic circuit including a microcomputer or the like, and according to the temperature set by the operation panel 22 and the detection signals from the flame detection sensor 13, the room temperature sensor 21 and the like, the sparker 12, the opening / closing solenoid valve 1
The heating operation is performed by controlling the electromagnetic proportional valves 16 and the convection fan motor 18 and the like.

In this embodiment, the wireless communication unit 24 is incorporated in the warm air heater 1 in advance and connected to the heating control means 23, and operates with the same power supply as the warm air heater 1. The wireless communication unit 24 is capable of transmitting and receiving wireless signals. The wireless communication unit 24 converts a wired signal output from the heating control unit 23 into a wireless signal and transmits the wireless signal to the wireless communication unit 2 connected to the ventilation device 3. A wireless signal transmitted from the communication unit 2 is received, converted into a wired signal, and output to the heating control unit 23.

The ventilation device 3 is, for example, an existing ventilation fan,
In the room where the hot air heater 1 is installed, it is installed away from the hot air heater 1. The ventilation device 3 includes a fan motor 25
And a fan motor 2 according to a control signal input from a home automation terminal 27.
And a rotation control means 28 for controlling the rotation of the power supply 5. Electric power is supplied to the rotation control means 28 from a household AC power supply (not shown) via an outlet 29.

The wireless communication means 2 is connected to the ventilator 3 via a home automation terminal 27, and receives a control signal wirelessly transmitted from a wireless communication unit 24 provided in the hot air heater 1 at the home automation terminal 27. The signal is converted into a possible signal form and transmitted to the ventilation device 3. Also,
The rotation control unit 28 is connected to a wind pressure detection unit 30 such as a load cell installed near the fan 26, and transmits a ventilation normal signal to the wireless communication unit when the wind pressure detected by the wind pressure detection unit 30 is equal to or higher than a predetermined value. 2 to the wireless communication unit 24. In this embodiment, the non-communication means 2 is used.
Uses the built-in battery 31 as a driving source, so that when the wireless communication means 2 is retrofitted to the existing ventilation device 3, power wiring work for the wireless communication means 2 is unnecessary, and the wireless communication means 2
Can be easily installed.

As described above, by connecting the home automation terminal 27 of the existing ventilation device 3 and the wireless communication means 2, it is possible to wirelessly transmit and receive signals between the existing ventilation device 3 and the combustion equipment 1. Become. Therefore, it is not necessary to newly install a ventilation device, and wiring work for a signal transmission path required when transmitting and receiving signals by wire is also unnecessary.

Next, the operation of the indoor ventilation control device of the present embodiment shown in FIG. 1 will be described with reference to the flowcharts of FIGS. FIG. 2 is a flowchart showing the operation of the hot air heater 1, and FIG. 3 is a flowchart showing the operation of the ventilation device 3.

Referring to FIG. 2, when the user instructs the start of the heating operation through operation panel 22 in STEP 1, an operation start signal is input to heating control means 23. Then, the heating control means 23 transmits a ventilation operation signal to the wireless communication means 2 connected to the ventilator 3 via the wireless communication unit 24 in STEP2. The heating control means 23
In TEP3, a waiting time timer provided therein is operated.

On the other hand, referring to FIG. 3, in STEP 11, the rotation control means 28 provided in the ventilator 3 is connected via the wireless communication means 2 to the wireless communication unit 2 provided in the hot air heater 1.
STEP 4 when the ventilation operation signal transmitted from
At 12, the fan motor 25 is turned on, and the fan 26 starts rotating. In STEP 13, the waiting time timer provided in the rotation control means 28 is operated. When the wind pressure detecting means 30 detects that the flow rate of the air generated by the rotation of the fan 26 is equal to or more than the predetermined value, the rotation control means 28 determines that the indoor ventilation is normally performed, and determines in STEP 15 A wireless communication unit 2 provided to the warm air heater 1 via the wireless communication means 2 through a ventilation normal signal
4 is transmitted.

If the waiting time timer expires in STEP 16 before the normal detection of the indoor ventilation by the wind pressure detecting means 30 in STEP 14, the rotation of the fan 26 is abnormal and the indoor ventilation is insufficient. In step 17, the fan motor 25 is turned off.
In step F, abnormal heat generation of the fan motor 25 due to overload or the like is prevented, and a ventilation abnormality signal is transmitted to the wireless unit 24 provided in the warm air heater 1 in STEP 18.

When the heating control means 23 receives a normal ventilation signal from the wireless communication means 2 connected to the ventilator 3 via the wireless communication unit 24 in STEP 4 in FIG. To start. That is,
The heating control means 23 drives the convection fan 8 via the convection fan motor 18, opens the electromagnetic valves 14, 15 and the electromagnetic proportional valve 16 of the gas supply pipe 9, and starts gas supply to the combustion section 5. Then, the bus burner 11 is ignited by the sparker 12 to start the heating operation.

On the other hand, when the heating control means 23 receives the ventilation abnormal signal from the wireless communication means 2 connected to the ventilation device 3 via the wireless communication unit 24 in STEP 6, the indoor ventilation by the ventilation device 3 is normally performed. Since the operation cannot be performed, the heating operation is not performed, and an error is displayed on the operation panel 22 in STEP7. Further, when the waiting time timer has expired in STEP8, there is no response from the wireless communication means 2 and the control of the ventilator 3 is impossible, so that the heating operation is not performed again and an error is displayed in STEP7. By operating in this manner, when the indoor ventilation by the ventilation device 3 cannot be performed normally, the heating operation of the hot air heater 1 can be prevented from being performed.

In the flowcharts of FIGS. 2 and 3, the operation at the time of starting the combustion operation of the warm air heater 1 has been described. A ventilation operation instruction signal is transmitted to the wireless communication means 2 connected to the ventilator 3 via the wireless communication unit 24, and when there is no response to the normal ventilation signal from the wireless communication means 2, the warm air heater 1 May be stopped.

When the combustion equipment is a stove and the ventilation device 3 is installed near the stove, if the ignition of the stove and the ventilation by the ventilation device 3 are performed at the same time, the influence of the wind generated by the ventilation causes In some cases, ignition of the stove may be hindered. In such a case, a waiting time may be provided between STEP1 and STEP2 in FIG. 2, and after the ignition operation of the stove is completed, a ventilation operation signal may be transmitted in STEP2.

In this embodiment, the wind pressure detecting means 30 is used as the ventilation state detecting means. However, instead of the wind pressure detecting means 30, a rotation detecting means attached to a rotation shaft of a fan motor 25 or a rotation detecting means attached to the fan 26 is used. Detecting means (for example, a photosensor including a light emitting element and a light receiving element which are opposed to each other with the fan blades interposed therebetween);
It is also possible to detect the state of ventilation by the ventilation device 3 by using current detection means for detecting the current flowing through the ventilation device 3.

In this embodiment, a hot air heater is shown as an open-type combustion device, but the present invention can be applied to other open-type combustion devices such as a water heater.

In the present embodiment, the wireless communication means 2 has a built-in battery 31 and uses it as a drive source. However, when power is supplied from the rotation control device 28 to the home automation terminal 27, The wireless communication means 2 does not have to include the battery 31.

In this embodiment, the ventilator 3 includes the home automation terminal 27. However, even if the ventilator does not include the home automation terminal, it can transmit and receive signals wirelessly to and from an external device. If possible, the present invention can be applied.

In this embodiment, the case where the wireless communication unit 24 is incorporated in the hot air heater 1 in advance has been described. It is also possible to detachably attach the wireless communication unit 24 to the connection terminal.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an example of an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the hot air heater shown in FIG.

FIG. 3 is a flowchart showing the operation of the ventilator shown in FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hot air heater, 2 ... Wireless communication means, 3 ... Ventilation device, 4
... body case, 5 ... combustion section, 6 ... combustion chamber, 7 ... heat exchange section, 8 ... convection fan, 9 ... gas supply pipe, 10 ... nozzle,
11: gas burner, 12: sparker, 13: flame detection sensor, 14, 15: open / close solenoid valve, 16: solenoid proportional valve, 17
… Suction port, 18 convection fan motor, 19… ventilation passage,
20: outlet, 21: room temperature sensor, 22: operation panel,
23 ... heating control means, 24 ... wireless communication unit, 25 ...
Fan motor, 26 ... Fan, 27 ... Home automation terminal, 28 ... Rotation control means, 29 ... Outlet,
30 ... wind pressure detecting means, 31 ... battery

Claims (3)

[Claims] 1. A fan, a fan motor for rotating the fan, wireless communication means for wirelessly transmitting and receiving signals to and from an external device, and connected to the wireless communication means and inputted to the wireless communication means. A ventilation control unit that controls rotation of the fan motor in accordance with the signal; a ventilation operation detection unit that detects a ventilation operation state of the fan; and a function of wirelessly transmitting and receiving signals to and from the ventilation device. An open-type combustion apparatus that transmits a ventilation operation signal to the ventilation device and performs a combustion operation only when a normal ventilation signal indicating that ventilation operation is normally performed is returned from the ventilation device. An indoor ventilation control device comprising: 2. A fan, a fan motor for rotating the fan, a home automation terminal, rotation control means for controlling the rotation of the fan motor in accordance with a signal input to the home automation terminal, A ventilation device having ventilation operation detecting means for detecting a ventilation operation state, connected to the ventilation device via the home automation terminal, and converting a signal output from the home automation terminal into a radio signal to an external device A wireless communication unit that transmits and receives a wireless signal transmitted from an external device and converts the received wireless signal into a signal form that can be input to a home automation terminal; and a function of wirelessly transmitting and receiving signals to and from the wireless communication unit. Transmitting a ventilation operation signal to the ventilation device through the wireless communication means, and transmitting the wireless communication signal from the ventilation device to the ventilation device. Room ventilation control apparatus characterized by comprising a open burning appliance ventilation normal signal which indicates that the ventilating operation via a means has been performed normally performs only combustion operation when it is returned. 3. The indoor ventilation control device according to claim 1, wherein said wireless communication means includes a battery as a power supply.