JP3108301B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to an air conditioner in which room temperature is detected by room temperature detecting means, and air conditioning operation is performed based on the detected temperature and a set temperature. Concerning the harmonic machine.

[0002]

2. Description of the Related Art Conventionally, various types of fire prevention equipment have been used which automatically detect a fire, report a fire, extinguish a fire, and the like. For example, as fire prevention equipment for detecting the occurrence of a fire, a smoke fire detector that detects the occurrence of smoke, a thermal fire detector that detects a sudden rise in room temperature, and the like are used. When a fire detector detects that a fire has occurred, the fire center is notified of the occurrence of the fire. On the other hand, as equipment for extinguishing the fire that has occurred, automatic fire extinguishing such as a sprinkler that injects fire protection water or the like stored in advance when a fire occurs into a room through a water discharge pipe installed on the ceiling etc. to extinguish the fire Equipment is used.

However, the above-mentioned smoke type fire detector,
Various types of fire prevention equipment such as thermal fire detectors and automatic fire extinguishing equipment are all expensive, and it is necessary to install these expensive equipment individually to automatically report the occurrence of a fire or extinguish a fire. there were. Therefore, the above-described various types of fire prevention equipment are mainly used only in offices and work places, and are not widely used in ordinary households.

Air conditioners widely used in offices and ordinary households at present have a temperature sensor for detecting the indoor temperature (room temperature), and the temperature sensor detects the temperature at predetermined time intervals. Heating operation, cooling operation, etc., are performed so as to approach the set temperature. An air conditioner (hot water air conditioner) that cools with a refrigerant and heats with hot water is also known. In this hot water air conditioner, a circulation pipe of the hot water is arranged below the floor of the room to be conditioned, and the room to be heated is heated by flowing the hot water through the circulation pipe by the pressure of the pump. As described above, an air conditioner, particularly a hot water air conditioner, has a configuration relatively similar to the above-described thermal fire detector, automatic fire extinguishing equipment, and the like.

An object of the present invention is to provide an air conditioner that can be effectively used as fire protection equipment in consideration of the above fact.

[0006]

[MEANS FOR SOLVING THE PROBLEMS]
The present invention is to generate hot water and to a predetermined hot water circulation path.
A heat source device for supplying the hot water, and provided at a high place in the room,
The hot water supplied from the heat source device is supplied to the hot water
The indoor heat is supplied to the indoor heat exchanger through a
The indoor unit to radiate heat from the exchanger and the temperature in the room
Room temperature detecting means for detecting
Water outlet provided with a water outlet for discharging water into the room
A water discharge valve for communicating between the pipe and the hot water circulation path;
For guiding the hot water to a water outlet for water discharge
A predetermined room by the internal means and the room temperature detecting means.
Detects a temperature higher than the predicted fire temperature to predict the occurrence of a fire in the building
Output a signal to open the circulation valve and the water discharge valve.
The hot water is discharged from the water outlet through the guiding means.
Control means for watering .

The invention according to claim 2 is characterized in that the room temperature detection
Predict the occurrence of a predetermined indoor fire by means of release
If a temperature higher than the expected fire
Signal transmission means for transmitting a fire notification signal to the
No it and it said.

[0008]

According to the present invention, hot water is produced and a predetermined hot water is generated.
A heat source unit that supplies hot water to the circulation path is provided. In addition, this
The heat source equipment is a heat source equipment dedicated to the air conditioner or hot water supply equipment
Corresponds to a water heater (water heater) and the like. Room temperature detection
The means detects the indoor temperature, and the detected temperature causes a fire
If the temperature is higher than the predicted temperature, the control means is installed in the indoor unit.
It outputs a signal to open the circulation valve and the water discharge valve. this
Thereby, the circulation valve is opened, and the hot water flows through the hot water circulation path.
Also, since the water discharge valve is opened, hot water is circulated through the water discharge valve.
It flows from the annulus to the water discharge pipe, and is discharged indoors from the water discharge port.
Will be. Therefore, the indoor temperature should be
If the temperature rises more than
Water can be extinguished automatically and quickly. Immediately
In addition, the circulation of warm water performed by the warm water air conditioner
Can be effectively used for expensive sprinklers
Automatically and quickly extinguish fires without installing automatic fire extinguishing equipment
It can be carried out.

[0009] Further, the invention according to claim 2 provides a signal transmitting means.
The stage predicts the occurrence of an indoor fire by a predetermined room temperature detection means.
If the detected temperature exceeds the predicted fire occurrence temperature,
To management center (for example, fire department or gas leak monitoring center)
Send a fire notification signal. In addition, as the room temperature detecting means,
From a room temperature sensor or a predetermined temperature detection target (for example, near the floor)
The temperature is detected by detecting the amount of emitted infrared light.
A radiation sensor that detects the target temperature can be used.
You. As a result, the indoor temperature exceeds the predicted fire
Fire notification signal is sent to the management center
Notification of fire occurrence can be performed automatically and promptly.
That is, the temperature detection in the room performed by the air conditioner is used for fire prevention.
Can be effectively used for
Automatic notification of fire occurrence without installing expensive equipment
Can be done quickly.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

First, a schematic configuration of an air conditioner (air conditioner) according to the present embodiment will be described with reference to FIG. The air conditioner (air conditioner) of the present embodiment includes an indoor unit 10 installed indoors, an outdoor unit 12 installed outdoors, and a water heater 92 corresponding to the heat source unit of the present invention. In addition,
In the embodiment described below, the hot water circulation path is provided with a hot water supply circuit 90 in which the hot water supplied by the household water heater 92 circulates.
And hot water is supplied from the hot water supply circuit 90. However, the heat source device of the present invention is not limited to this, and a heat source device dedicated to the air conditioner may be provided.

The indoor unit 10 has an evaporator 16B constituting a refrigeration cycle and a radiator 16A to which hot water is supplied. The indoor unit 10 is integrally formed such that the evaporator 16B is located on the windward side of the radiator 16A. A heat exchanger 16 is provided. The evaporator 16B is connected to the outdoor heat exchanger in the outdoor unit 12 via the conduits 18 and 34, and a refrigerant circulation path in which the refrigerant circulates between the indoor unit 10 and the outdoor unit 12 is formed. . The radiator 16A is connected to the above-described hot water supply circuit 90 via the conduits 53 and 55, and a hot water circulation path for circulating hot water between the indoor unit 10 and the water heater 92 is formed.

A floor sensor 15 for detecting the temperature of the floor surface and a microcomputer 19 as a control device are provided. The microcomputer 19 has a floor sensor 15 and a hot water flowing through a hot water circulation path in the indoor unit 10. A flow rate variable valve 62 for controlling the flow rate, and a water discharge valve 69 for flowing hot water in the hot water circulation path to a water discharge pipe 57 described later.
Are wires for information communication indicated by broken lines in FIG.
(Referred to as a communication line).

In the indoor unit 10, a water discharge pipe 57 is provided branching from the above-described hot water circulation path, and the water discharge valve 69 is provided with the hot water circulation path and the water discharge pipe 57.
And have contacted. A plurality of water outlets 6 are provided in the water discharge pipe 57.
4 are provided, and each water outlet 64 is installed at a predetermined position on the ceiling with the opening facing the room.

The microcomputer 19 is also connected to a modem 13 (modem) having a built-in network control unit (NCU) having a communication control function for connecting to the public line network 65. 6
Gas leak monitoring center 67 as a management center via 5
A predetermined signal, information, and the like can be transmitted to the fire department 68.

Next, the hot water circulation path and the refrigerant circulation path will be described with reference to FIG. The indoor heat exchanger 16 provided in the indoor unit 10 includes the radiator 16A and the evaporator 16B as described above (see FIG. 1). Evaporator 16B
Performs cooling by evaporating the refrigerant in the evaporator 16B. On the other hand, the radiator 16A heats with the flowing hot water. In the vicinity of the indoor heat exchanger 16, a fan 17 for passing the indoor heat exchanger 16 and blowing air to the conditioned room is provided.

The evaporator 16B of the indoor heat exchanger 16 is connected to a valve 20 of the outdoor unit 12 via a refrigerant pipe 18 composed of a thick pipe. The valve 20 is connected to the valve 32 via a muffler 22, an accumulator 24, a compressor 26, an outdoor heat exchanger 28, and a capillary tube 30. The valve 32 is connected to the indoor heat exchanger 16 via a refrigerant pipe 34 formed of a thin tube.
Is connected to the evaporator 16B to form a closed refrigerant circulation path, that is, a refrigeration cycle. In the vicinity of the outdoor heat exchanger 28, a fan 29 for passing the outdoor heat exchanger 28 to blow air is provided.

The radiator 16A of the indoor heat exchanger 16
Is connected to the hot water supply circuit 9 through the pipes 53 and 55 as described above.
The hot water circulating in the hot water supply circuit 90 is connected to the pipeline 5 by opening the variable flow rate valve 62 described above.
3. The heat radiator 16A and the pipe 55 are circulated in this order, that is, the hot water circulation path can be circulated. The hot water supply circuit 90 further includes a hot water supply pipe 94 for a bath.
And a hot water supply pipe 96 for the kitchen is also connected.

The hot water circulation path is connected to the indoor unit 10.
Inside, the water is branched to a water discharge pipe 57 via a water discharge valve 69, and the water discharge pipe 57 reaches the water discharge port 64 described above.

Next, the indoor unit 10 and the outdoor unit 1
The second electric circuit will be described in order. As shown in FIG. 3, the electric circuit of the indoor unit 10 includes a power supply board 70 and a control board 72. The power supply board 70 includes a drive circuit 70A to which a fan motor 70E (DC brushless motor) for adjusting the amount of air blown into the room is connected, a motor power supply circuit 70B for generating electric power for driving the motor, and electric power for a control circuit. , And a power supply circuit for serial circuit 70D that generates power for the serial circuit.

Therefore, by changing the voltage of the DC power supplied from the motor power supply circuit 70B to the drive circuit 70A, it is possible to arbitrarily adjust the rotation speed of the fan motor 70E, that is, the amount of air blown by the blower from the microcomputer. In the present embodiment, for example, this voltage is 25
Control is performed in 6 steps.

The control board 72 is provided with a serial circuit 72A connected to a power supply circuit for serial circuit 70D, a drive circuit 72B for driving a motor, and a microcomputer 19 as a control circuit. Connected to the drive circuit 72B are a step motor 74A for up and down flaps that moves the flap up and down, step motors 74B and 74C for left and right flaps, and a step motor 74D for floor sensor. The rotation angles of these step motors are controlled by signals from the microcomputer 19. The step motor 74D changes the direction of the floor sensor 15, which detects the temperature near the floor, based on the detected amount of infrared rays within a relatively wide range. Thus, the floor sensor 15 can detect the temperature near the floor in a relatively wide range.

The microcomputer 19 is connected to the above-mentioned variable flow rate valve 62 and water discharge valve 69, and is provided on a display substrate 76 with a display LED for displaying an operation mode and the like.
Further, a receiving circuit for receiving an operation signal from the remote controller is connected, and an area LED provided on the sensor board 78 for displaying a temperature detection area on the floor surface and the above-described floor sensor 15 are connected. Further, the microcomputer 19 includes a room temperature sensor 80A for detecting a room temperature and a temperature sensor 8 for the heat exchanger for detecting the temperature of the indoor heat exchanger 16.
0B, a humidity sensor 80C for detecting indoor humidity, a self-diagnosis LED provided on a switch board 82, an operation changeover switch for switching between normal operation and test operation, and a self-diagnosis switch are connected.

On the other hand, as shown in FIG.
The rectifier circuit 100 and the control board 10
2 is provided. The electric circuit of the outdoor unit 12 is connected to the electric circuit of the indoor unit 10 in FIG. 2 through a plurality of terminals indicated by.

The control board 102 generates power for switching the serial circuit 102A connected to the serial circuit power supply circuit 70D of the indoor unit 10, the noise filters 102B, 102C, 120D for removing noise, and the inverter 104. A switching power supply circuit 102E and a microcomputer 102F as a control circuit are provided. The microcomputer 102F includes the indoor unit 10
Based on a control signal transmitted from the microcomputer 19 of the indoor unit 10 via the serial circuit 72A and the serial circuit 102A, the frequency (18 Hz to 150 Hz) of AC power supplied to the compressor and the operation of each device are controlled.

An inverter 104 is connected to the switching power supply circuit 102E, and a compressor 106 for compressing the refrigerant is connected to the inverter 104.

The microcomputer 102F has an outside air temperature thermistor 11 as an outside air temperature sensor for detecting the outside air temperature.
0A, a coil temperature thermistor 110B as a coil temperature sensor for detecting the temperature of the outdoor heat exchanger 28, and a compressor temperature thermistor 110C as a temperature sensor for detecting the temperature of the compressor. Further, a four-way valve 36 and a solenoid valve 40 are connected to the outdoor unit 100. Note that 112A is a fan motor, and 112B is a fan motor capacitor.

Next, the operation of this embodiment will be described with reference to FIGS. The control routine shown in FIG. 5 is executed by the microcomputer 19 of the indoor unit 10 at predetermined time intervals.
In step 100, a flag F indicating that a timer (for example, a 90-second timer) that measures time for detecting the occurrence of a fire is turned on is reset, and in the next step 102, the room temperature T detected by the floor sensor 15 is captured. .
In the next step 104, it is determined whether or not the room temperature T is equal to or higher than a predetermined temperature (for example, 120 ° C.) for detecting the occurrence of a fire. If the room temperature T is lower than 120 ° C., this routine ends. I do.

On the other hand, if the room temperature T is equal to or higher than 120 ° C., the process proceeds from step 104 to step 106, where the flag F
Is determined. Since the initial flag F has been reset in the above step 100, an affirmative determination is made in step 106, and the routine proceeds to step 108. In step 108, the 90-second timer is turned on and the flag F is set. In the next step 110, it is determined whether or not the 90-second timer has timed out, that is, whether or not 90 seconds have elapsed. If 90 seconds have not elapsed, the process returns to step 102 and a new room temperature T is acquired. When the room temperature T is 120 ° C. or more again, in the step 106 which proceeds after making an affirmative determination in the step 104, the flag F is set, so that a negative determination is made and the process proceeds to the step 110.

In the present embodiment, it is determined that a fire has occurred in the room when the state where the room temperature T is 120 ° C. or more has continued for 90 seconds or more.
室温 By executing step 110, the room temperature T becomes 12
It is possible to automatically determine whether or not the temperature of 0 ° C. or more has continued for 90 seconds or more, that is, whether or not a fire has occurred in the room.

When the room temperature T is 120 ° C. or more, 90
If it continues for more than one second, an affirmative determination is made in step 110, and in the next step 112, the NCU built-in modem 13 connects to the gas leak monitoring center 67 and the fire department 68 via the public network 65 in order, and sends a fire detection signal to each of them. Send. Therefore, the state where the room temperature T is 120 ° C. or more is 9
When 0 seconds or more continue, a fire detection signal can be automatically and immediately transmitted to the gas leak monitoring center 67 and the fire department 68. In addition, each of the gas leak monitoring center 67 and the fire department 68 can quickly perform a predetermined response process in the event of a fire.

In the next step 114, the variable flow rate valve 62 and the water discharge valve 69 are opened. Thereby, the hot water circulating in the hot water supply circuit 90 flows through the hot water circulation path,
A plurality of water outlets 6 via a water discharge valve 69 and a water discharge pipe 57
4 and is injected into the room from the opening of each water outlet 64. Therefore, even if a fire extinguishing facility such as a sprinkler that injects fire-prevention water stored in advance from a water outlet into a room is not installed, when the state in which the room temperature T is 120 ° C or more continues for 90 seconds or more, hot water is generated. The fire is injected into the room, and automatic and rapid fire extinguishing can be realized.

In the above embodiment, the room temperature T is 120 ° C.
Although it was determined that a fire had occurred in the room when the above-mentioned state continued for 90 seconds or more, the room temperature T was set to a predetermined temperature for detecting fire occurrence (120 ° as an example).
C) It may be determined that a fire has occurred in the room only based on the determination of the above.

In the above embodiment, the floor sensor 15 is used as the room temperature detecting means for detecting the room temperature. However, the room temperature sensor 80A for detecting the temperature near the position where the indoor unit 10 is provided is used. May be. However, since the floor sensor 15 can detect the temperature near the floor close to the fire source in a predetermined relatively wide range, the floor sensor 15 is more likely to be used than the room temperature sensor 80A that detects the temperature at a single detection point. The use of this method has an advantage that the occurrence of a fire can be detected earlier with higher accuracy.

As for the injection stoppage after the injection of the hot water described in the above embodiment, for example, the operation of the pump of the heat source unit is manually stopped by an operator dispatched from the management center and the injection valve and the flow rate variable valve are stopped. May be manually closed. Further, the injection valve may be automatically closed after a predetermined time (for example, one hour) has elapsed since the injection valve was opened to stop the injection of the hot water. Furthermore, by using a temperature sensor having heat resistance as the room temperature detecting means according to the present invention, while the room temperature rises above the fire occurrence predicted temperature and the above-described hot water is discharged, the temperature sensor continues to use the temperature sensor. The measurement of the room temperature may be continued, and the injection of the hot water may be stopped when the room temperature becomes lower than the predicted fire occurrence temperature.

[0036]

As described above, according to the present invention, the temperature
Effective circulation of warm water performed by water-air conditioner for fire prevention
It can be used for expensive automatic eraser such as sprinkler
Automatically and quickly extinguish fires without installing fire equipment.
Can be.

According to the invention of claim 2, the air conditioner
Use of indoor temperature detection performed in the fire for fire prevention
Expensive equipment such as thermal fire detectors
Automatic and prompt notification of fire occurrence
it can.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an air conditioner according to the present embodiment.

FIG. 2 is a refrigerant and hot water circuit diagram of the air conditioner.

FIG. 3 is an electric circuit diagram of the indoor unit.

FIG. 4 is an electric circuit diagram of the outdoor unit.

FIG. 5 is a flowchart showing a control routine by a microcomputer on the indoor unit side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Indoor unit 12 Outdoor unit 15 Floor sensor (room temperature detection means) 19 Microcomputer 57 Water discharge pipe 62 Flow rate variable valve (circulation valve) 64 Water discharge port 69 Water discharge valve 92 Water heater (heat source unit)

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁷ identification code FI G08B 25/08 G08B 25/08 A (58) Field surveyed (Int.Cl. ⁷ , DB name) A62C 35/00-39 / 00 G08B 17/00 G08B 25/08-25/10 F24D 3/00 F24F 11/02

Claims (2)

(57) [Claims] 1. A predetermined hot water circulation path for generating hot water.
A heat source device for supplying the hot water to the room, and a hot water source provided at a high place in a room and supplied from the heat source device.
The indoor heat through the hot water circulation path and the openable and closable circulation valve.
Indoor unit for supplying to the heat exchanger and radiating heat from the indoor heat exchanger
And Tsu DOO, room temperature detecting means for detecting the temperature of the chamber, to discharge water to the chamber provided in the indoor unit
A water discharge pipe provided with a water discharge port and the hot water circuit
Equipped with a water discharge valve that interlocks with the water discharge port for discharging water indoors
The guide means for guiding the hot water and the room temperature detecting means detect a predetermined indoor fire.
When a temperature higher than the expected fire temperature is detected
To output a signal to open the circulation valve and the water discharge valve,
The hot water is discharged from the water outlet through a guide means.
An air conditioner provided with control means . 2. The method according to claim 1, wherein the room temperature detecting means is a predetermined room temperature.
If the temperature is higher than the predicted fire
If detected, sends a fire notification signal to the designated management center.
2. A signal transmitting means for transmitting a signal.
The air conditioner according to item 1.