JP2511209B2 - Air conditioner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a heating device, a cooling device,
The present invention relates to an air conditioner such as an air conditioner, a dehumidifier, a blower or a ventilation device.

[0002]

2. Description of the Related Art Conventionally, for example, a movable louver driven by an electric motor is provided at a hot air outlet opening on the front surface of a heater body to change the blowing direction of hot air blown from the hot air outlet. By so doing, a warm air type heating device (hereinafter referred to as a prior art) is proposed in which the temperature distribution in the room is improved.

[0003]

However, in the prior art, when a user, especially a child, inserts his / her finger into the hot air outlet and touches the louver, the user's finger may be caught in the louver for a long time. there were. An object of the present invention is to provide an air conditioner that prevents a user such as a child from getting his or her finger caught in a movable louver for a long time.

[0004]

According to the present invention, there is provided a convection duct having a blowout port for blowing out conditioned air into a room, an air conditioning unit for air conditioning the air flowing in the convection duct, and the blower. A movable louver that is movably attached to the outlet and that adjusts the blowing direction of the conditioned air that is blown from the outlet, an electric motor that drives the louver, and a child that limits changes in the operating state of the air conditioning means. A technical means having a setting unit for setting a lock mode, and an energization control circuit for stopping energization of the electric motor when the child lock mode is set by the setting unit is adopted.

It is to be noted that a child lock for restricting a change in the operating state of the air-conditioning means such as blowing the air flowing in the convection duct into the room, heating, cooling / dehumidifying, purifying, and heating after dehumidifying. The mode refers to a mode in which, for example, the heating operation, the cooling operation, or the dehumidifying operation of the air conditioner is mutually changed, the set temperature in the room is changed, and the operation of the air conditioner is changed from the operation stop state to the operation state.

According to a second aspect of the present invention, a convection duct having an outlet for blowing out conditioned air into a room and a direction in which conditioned air blown from the outlet is movably attached to the outlet. It has a movable louver to be adjusted, an electric motor that drives the louver, and a detection unit that detects an object to be detected. When the object is detected by this detection unit, the power supply to the electric motor is stopped. The technical means provided with the energization control circuit is adopted.

(Claim 3) According to the present invention, a convection duct having an outlet for blowing the conditioned air into the room, and a blowing direction of the conditioned air blown from the outlet movably attached to the outlet. It has a movable louver for adjustment, an electric motor for driving the louver, and a detector for detecting the amount of electricity supplied to the electric motor, and the amount of electricity supplied to the electric motor detected by the detector is a predetermined value. At the above time, the technical means including the energization control circuit for stopping the energization of the electric motor is adopted.

[0008]

According to the present invention, even when the air conditioner is in operation, when the setting unit sets the child lock mode for restricting the change of the operating condition of the air conditioner, the energization control circuit drives the motor. By automatically stopping the energization of the motor, the louver does not move and even if a user such as a child touches the louver, his / her finger is not caught in the louver.

According to a second aspect of the present invention, when the detection unit detects a user such as a child in the vicinity of the outlet, the energization control circuit automatically stops energization of the electric motor, thereby making the louver. Even if a user such as a child touches the louver without moving, the louver does not get caught in the finger.

According to the present invention, when the user's finger is caught in the louver, the louver cannot be displaced, so that an overcurrent is generated in the power supply control circuit for the electric motor. This overcurrent,
That is, when the detector detects that the amount of electricity supplied to the electric motor is equal to or greater than a predetermined value, the electricity supply to the electric motor is automatically stopped by the electricity supply control circuit, so that a user such as a child instructs the louver. It prevents you from being caught for a long time. Further, when the foreign matter is caught on the louver and the displacement of the louver is hindered, the displacement of the louver can be stopped, so that failure or damage of the louver and the electric motor can be prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air conditioner of the present invention will be described based on the embodiments shown in FIGS. 1 to 7 show a first embodiment of the present invention. FIG. 1 is a diagram showing an overall structure of a gas warm air type heating device adopted as an air conditioner, and FIGS. 2 and 3 are diagrams showing a device body of the gas warm air type heating device. The gas hot air heating device 1 includes a device body 3 having a heating device 2 built therein and a computer 9 for controlling the heating device 2. The heating device 2 is
It is composed of a convection duct 4, a convection blower 5, a gas burner 6, a combustion duct 7 and a gas supply pipe 8.

The convection duct 4 is incorporated in the device body 3, sucks indoor air from an air intake port 41 opened at the back of the device body 3, and warm air outlet 42 opened at the lower front of the device body 3. It is a hot air passage that blows warm air toward the inside of the room. A filter 43 is attached to the air inlet 41 to prevent dust and the like from flowing into the inside.

On the other hand, as shown in FIGS. 4 to 6, a movable louver 44 for adjusting the opening degree of the hot air outlet 42 and the hot air blowing direction is attached to the hot air outlet 42, and the link is provided. It is moved by a gad motor 45 connected through a mechanism 46 (see FIG. 6). Gad motor 45
Is an electric motor of the present invention, which is fixed to the lower part of the device body 3, and when the drive circuit 47 controlled by the computer 9 energizes, the output shaft 48 rotates in a certain direction and the energization is stopped. Then the rotation stops. The gad motor 45 is an AC motor and, as shown in FIG. 1, is connected to the drive circuit 47 via two power supply lines 471 and 472. As shown in FIG. 6, the link mechanism 46 includes a rotary disc 461 fitted to the outer periphery of the output shaft 48 of the gad motor 45, an interlocking plate 462 that converts the rotational displacement of the rotary disc 461 into a reciprocating displacement, and the connecting plate. 46
It is composed of a drive shaft 463 which is connected to 2 and to which the louver 44 is fixed. The drive shaft 463 is rotatably supported on the lower portion of the device body 3.

The convection blower 5 is the air-conditioning means of the present invention, and is a fan motor 51 whose rotation speed changes in accordance with the amount of energization, and is rotationally driven by this fan motor 51, and is indoors inside the convection duct 4. It is composed of a convection fan 52 that generates an oncoming airflow.

The gas burner 6 is the air-conditioning means of the present invention, and is built in the convection duct 4 and has a structure in which a combustion plate 62 is arranged inside a combustion case 61 communicating with the inside of the convection duct 4. The combustion exhaust gas generated by the gas burner 6 is mixed with the room air flowing in the convection duct 4 to heat the air. On the downstream side of the combustion plate 62, a spark electrode 63 for igniting a mixture of fuel gas and combustion air flowing out from the combustion plate 62 by spark discharge.
Are arranged.

The combustion duct 7 is incorporated in the equipment body 3, and supplies the gas burner 6 with the indoor air taken in through the intake port 71 opened at the back of the equipment body 3 and the fuel gas introduced through the gas supply pipe 8. It is a supply passage. The suction port 71 is covered with the filter 43 described above.

The gas supply pipe 8 is a gas passage for supplying fuel gas to the gas burner 6, and has two solenoid valves 81, 8
2, the governor valve 83, the proportional control valve 84, and the nozzle 85 are sequentially provided from the upstream side.

The two solenoid valves 81 and 82 are connected to the gas supply pipe 8
It opens and closes when it is energized (ON) and opens when energized (OFF). The governor valve 83
The supply pressure of the fuel gas is made constant.

The proportional control valve 84 adjusts the supply amount of the fuel gas by changing the opening degree of the gas supply pipe 8 according to the energization amount to change the supply pressure of the fuel gas. The nozzle 85 is opened in the combustion duct 7 and ejects the fuel gas flowing through the gas supply pipe 8 into the combustion duct 7.

The computer 9 is the energization control circuit of the present invention, and in accordance with the outputs of the operation switch 90, the child lock setting section 91, the thermocouple 92 and the temperature sensor 93, the gad motor 45, the fan motor 51 and the spark electrode 63. The solenoid valves 81, 82, the proportional control valve 84, and a display device (not shown) for displaying the set temperature and the room temperature are energized. As shown in FIG. 2, the operation switch 90 is attached to the upper surface of the device body 3 and sends instructions to the computer 9 to start and stop the operation of the heating device 2.

As shown in FIG. 2, an opening / closing lid 31 is attached to the upper surface of the device main body 3, and when the opening / closing lid 31 is opened, a temperature control switch 96 for raising the set temperature and a temperature control for lowering the set temperature. The operation unit such as the switch 97 appears. These temperature control switches 96 and 97 constitute temperature setting means for setting a set temperature when operated separately, and when operated simultaneously, act as a child lock setting section 91 to change the set temperature in the room. In addition to the prohibition, the child lock mode that prohibits the operation start of the heating device 2 even when the operation switch 90 switches from the operation stop state to the operation start state is set. To release the child lock mode, the temperature adjustment switches 96 and 97 may be simultaneously operated again.

The thermocouple 92 includes a combustion plate 62.
Is installed on the downstream side of the
It is to detect whether or not the gas burner 6 is abnormally burning, such as the oxygen deficiency state of the combustion flame. The temperature sensor 93 is a temperature sensitive element such as a thermistor attached near the suction port 71 of the combustion duct 7, and detects the temperature inside the room.

FIG. 7 is a flow chart showing an example of the main operation of the computer 9. First, the operation switch 90
It is determined whether or not is turned on (step S1).
When the operation switch 90 is not turned on (No), the control of step S1 is performed, and when the operation switch 90 is turned on (Yes), the gad motor 45 and the fan motor 5 are used.
1, the spark electrode 63, the solenoid valves 81, 82, etc. are energized (turned on) to start the operation of the heating device 2 (step S
2).

Subsequently, it is determined whether or not the temperature control switches 96 and 97 are simultaneously operated (step S3).
If not operated at the same time (No), the control of step S3 is performed.

In step S3, when both are operated simultaneously (Yes), the child lock mode is set (step S4), and the drive circuit 47 is turned off. That is, the power supply to the gad motor 45 is stopped (turned off) (step S5). After that, it is determined whether or not the temperature control switches 96 and 97 are simultaneously operated (step S
6). When not operated at the same time (No), step S
6 is controlled.

In step S6, when both are simultaneously operated (Yes), the child lock mode is released (step S7), and the drive circuit 47 is turned on. That is, the gad motor 45 is re-energized (turned on) (step S8). Then, control of step S3 is performed.

The heating device 2 is not operated when the child lock mode is set when the operation switch 90 is turned on. Also, the operation switch 90
When is turned off from on, the heating device 2 is immediately stopped regardless of the setting of the child lock mode.
Furthermore, when the power supply to the gad motor 45 is stopped, the power supply to the fan motor 51 and the solenoid valves 81 and 82 may be stopped to stop the heating operation at the same time.

The operation of the gas warm air type heating device 1 will be described with reference to FIGS. 1 to 6. When the operation switch 90 is turned on, the operation of the heating device 2 is started. That is, the fan motor 51, the spark electrode 63, the solenoid valves 81 and 82
Is energized, the fuel gas and room air are sucked into the combustion case 61 by the suction force of the convection fan 52, combustion is started in the gas burner 6, and hot air is blown out into the room from the hot air outlet 42.

At the start of operation of the heating device 2, the drive circuit 47 is turned on, and power is supplied from the drive circuit 47 to the gad motor 45 via the two power supply lines 471 and 472. Therefore, since the gad motor 45 is also turned on,
As the output shaft 48 rotates, the turntable 461 rotates in the same direction as the output shaft 48. Then, the rotational displacement of the turntable 461 is converted into a reciprocating displacement by the interlocking plate 462, and the drive shaft 4
Tell 63. Therefore, the louver 44 is in the fully open position (see FIG. 4) → half open position (see FIG. 5) → closed position (see FIG. 6).
-> Half open position (see Fig. 5) → Full open position (see Fig. 4) are reciprocated in this order to change the degree of opening of the warm air outlet 42 and the blowing direction of the warm air.

At this time, for example, when the user operates one of the temperature control switches 96 and 97 for the purpose of setting the set temperature in the room, the computer 9 causes the computer 9 to set the temperature and the temperature sensor 93. The heating capacity of the heating device 2 is controlled based on the difference with the room temperature detected in. For example, the energization amount of the fan motor 51 is changed to change the blowing amount of the convection fan 52, or the energization amount of the proportional control valve 84 is changed to change the amount of gas ejected from the nozzle 85 of the gas supply pipe 8. By doing so, the combustion capacity of the gas burner 6 is changed.

Here, the child lock mode is set by operating the temperature adjusting switches 96 and 97 at the same time in order to prevent the set temperature from rising due to mischief of a child. At this time, it is prohibited to change the set temperature in the room by operating either one of the temperature control switches 96 and 97. In other words, since the room temperature is not changed even if the child manipulates the temperature control switches 96 and 97, it is possible to prevent the room from overheating.

When the child lock mode is set, the computer 9 drives the drive circuit 47.
To stop the control of the gad motor 45. Therefore, even if the child touches the louver 44, the louver 44 does not move, so that the louver 44 does not catch the child's finger.

8 to 10 are views showing a second embodiment of the present invention, FIG. 8 is a block diagram showing a control device of a gas warm air type heating device, and FIG. 9 is a front view of a device body. It is a figure. The control device of the gas warm air type heating device 1 includes an infrared sensor 94 instead of the child lock setting unit 91.

The infrared sensor 94 is a detecting portion of the present invention and is attached to the front surface of the device body 3 and has a light emitting element 98.
And a light receiving element 99. Light emitting element 98
Is an infrared light emitting diode, for example, and emits infrared rays toward the front of the device body 3. Light receiving element 99
Is composed of, for example, a phototransistor, and the device body 3
Infrared light reflected by a user such as a child who has entered a detection range within 50 cm in front of is detected.

Further, the method of changing the opening degree of the hot air outlet 42 and the hot air blowing direction by the louver 44 of this embodiment is based on a fuzzy control rule based on a fuzzy variable relating to the room temperature and a fuzzy variable relating to the operation duration time. The drive circuit 47 is controlled by the computer 9 so as to change the louver 44 to the fully closed position (see FIG. 4), the half open position (see FIG. 5) or the fully closed position (see FIG. 6).

FIG. 10 is a flow chart showing an example of the main operation of the computer. The same operations as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. After performing the control in step S2, it is determined whether or not the light receiving element 99 of the infrared sensor 94 detects a user such as a child (step S11). Does not detect users such as children (No)
At this time, the control of step S11 is performed.

In step S11, when the user such as a child is detected (Yes), the drive circuit 47 is turned off. That is, the power supply to the gad motor 45 is stopped (turned off) (step S12). After that, it is determined whether or not the light receiving element 99 of the infrared sensor 94 detects a user such as a child (step S13). When the user such as a child is not detected (No), the drive circuit 47 can be controlled. That is, the gad motor 45 can be controlled (step S14). Then, control of step S11 is performed. In step S13, when the user such as a child is detected (Yes), the control of step S13 is performed.

When the operation switch 90 is turned off, the operation of the heating equipment 2 is immediately stopped. Further, the gad motor 45 may be controllable after a set time elapses after the light receiving element 99 of the infrared sensor 94 does not detect a user such as a child. Furthermore, gad motor 4
When the power supply to 5 is stopped, the fan motor 51 and the solenoid valve 8
The heating operation may be stopped at the same time when the energization of Nos. 1 and 82 is stopped.

As described above, in this embodiment, when the light receiving element 99 of the infrared sensor 94 detects a user such as a child in front of the warm air outlet 42, the gad motor 45 is turned off to stop the movement of the louver 44. Therefore, even if a user such as a child touches the louver 44, the louver 44 does not get caught in a finger and it is safe.

11 and 12 are views showing a third embodiment of the present invention, and FIG. 11 is a block diagram showing a control device of a gas warm air type heating device. This gas hot air heating system 1
The control device of No. 1 detects the detection resistance 951 provided on one of the two power supply lines 471 and 472 connecting the gad motor 45 and the drive circuit 47, and the potential difference between both ends of the detection resistance 951 as a reference voltage. Comparator 95 to compare with
2 is provided. The overcurrent detection circuit 95 is the detection unit of the present invention and includes a detection resistor 95.
When the potential difference between both ends of 1 rises above the reference voltage, a detection signal is sent to the computer 9. The computer 9 determines that the overcurrent is being detected in the two power supply lines 471 and 472 when the detection signal is input.

FIG. 12 is a flow chart showing an example of the main operation of the computer. The same operations as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. After performing the control in step S2, it is determined whether or not an overcurrent is detected (step S21). Overcurrent is not detected (No)
At this time, control of step S21 is performed.

In step S21, when the overcurrent is detected (Yes), the drive circuit 47 is turned off. That is, the power supply to the gad motor 45 is stopped (turned off) (step S22). Then, the control ends.

As described above, in this embodiment, when the user's finger is caught in the louver 44, the louver 44 cannot move, so that the power feeding lines 471, 4 to the gad motor 45 are provided.
Overcurrent occurs at 72. This overcurrent is detected by the overcurrent detection circuit 9
By turning off the gad motor 45 after detection by 5, the user such as a child can be prevented from being caught in the louver 44 for a long time. Further, when the foreign matter is caught on the louver 44 and the movement of the louver 44 is hindered, the movement of the louver 44 can be stopped, so that the failure and damage of the louver 44 and the gad motor 45 can be prevented.

(Modification) In the present embodiment, the present invention is applied to the gas hot air heating device, but the present invention is applied to a heating device provided with other heat sources such as an electric heater and a hot water heater. Is also good. As a heating device provided with another heat source, for example, FF type hot air provided with a heat exchanger that heats the indoor air by exchanging heat between exhaust gas generated by combustion in a burner and inhaled indoor air A heating device may be adopted.

Further, the present invention may be applied to an air conditioner such as a cooling device, a cooling and heating device, a dehumidifying device, a blower device such as a fan, or a ventilation device such as a ventilation fan. In the present embodiment, the gad motor 45 is used as the electric motor, but a stepping motor, a DC motor or the like may be used.

In the first embodiment, the child lock is set or released by operating the temperature control switches 96 and 97 at the same time, but the child lock can be set or released by operating a dedicated switch. Alternatively, it may be performed by simultaneously operating other switches.

As the detection unit, in addition to the second embodiment, a non-contact type sensor such as a transmission type photoelectric switch, a proximity switch or an ultrasonic sensor, a contact type sensor such as a touch switch, a sensor for sensing body temperature. An infrared camera or the like that takes a temperature element or a thermal image may be used. Further, the detection unit may be provided not only on the front surface of the device main body but also on the side surface and the back surface thereof, and may also be provided on the wall portion, furniture, and the like.

Although the overcurrent detection circuit is used as the energization amount detection circuit in the third embodiment, other energization current detection circuits may be used as the energization amount detection circuit.

[0049]

(Effect of the Invention) (Claim 1) According to the present invention, even when a user such as a child touches the louver while the air-conditioning means is operating, it is possible to prevent the louver from being caught in the finger, so that the air conditioning is excellent in safety. A device can be provided.

(Claim 2) The present invention can provide an air conditioner excellent in safety because it is possible to prevent a user such as a child from being caught in the louver even if he or she touches the movable louver.

(Claim 3) The present invention can provide a highly safe air conditioner because a user such as a child can be prevented from being pinched by the louver for a long time. Further, when foreign matter is caught on the louver and displacement of the louver is hindered, the displacement of the louver can be stopped, so that failure or damage of the louver and the electric motor can be prevented.

[Brief description of drawings]

FIG. 1 is a structural diagram showing an overall structure of a gas warm air type heating device according to a first embodiment.

FIG. 2 is a perspective view showing a front surface of a device body of the gas warm air type heating device.

FIG. 3 is a perspective view showing a back surface of a device body of the gas warm air type heating device.

FIG. 4 is a front view showing an open position of a louver.

FIG. 5 is a side view showing a half open position of the louver.

FIG. 6 is a front view showing a closed position of a louver.

FIG. 7 is a flowchart showing an example of main operations of the computer according to the first embodiment.

FIG. 8 is a block diagram showing a control device of a gas warm air type heating device according to a second embodiment.

FIG. 9 is a perspective view showing a front surface of a device body of a gas warm air type heating device according to a second embodiment.

FIG. 10 is a flowchart showing an example of main operations of the computer according to the second embodiment.

FIG. 11 is a block diagram showing a control device of a gas warm air type heating device according to a third embodiment.

FIG. 12 is a flowchart showing an example of main operations of the computer according to the third embodiment.

[Explanation of symbols]

 1 Gas Hot Air Heating Device (Air Conditioner) 4 Convection Duct 5 Convection Blower (Air Conditioning Means) 6 Gas Burner (Air Conditioning Means) 9 Computer (Electrification Control Circuit) 42 Warm Air Outlet 44 Louver 45 Gad Motor (Electric Motor) 91 Child lock setting section 94 Infrared sensor (detection section) 95 Overcurrent detection circuit (detection section)

Claims (3)

(57) [Claims] 1. A convection duct having: (a) an outlet for blowing out conditioned air into a room; and (b) an air conditioner for conditioning the air flowing in the convection duct.
Means, and (c) movably mounted to said air outlet, louver movable to adjust the blowing direction of the conditioned air blown from the air outlet, an electric motor for driving (d) is the louver, ( e) It has a setting unit for setting a child lock mode for restricting a change in the operating state of the air conditioner, and when the child lock mode is set by this setting unit,
An air conditioner comprising: an energization control circuit for stopping energization of the electric motor. 2. A convection duct having (a) an outlet for blowing conditioned air into a room, and (b) a movably attached to the outlet and adjusting a blowing direction of the conditioned air blown from the outlet. Which has a movable louver, (c) an electric motor that drives the louver, and (d) a detection unit that detects an object to be detected. When the object is detected by the detection unit, the electric motor An air conditioner having an energization control circuit for stopping energization of a motor. 3. A convection duct having (a) an outlet for blowing out conditioned air into the room, and (b) a movably attached to the outlet and adjusting the blowing direction of the conditioned air blown out from the outlet. A movable louver for controlling the louver, (c) an electric motor for driving the louver, and (d) a detection unit for detecting the amount of electricity supplied to the electric motor. An air conditioner comprising: an energization control circuit for stopping energization of the electric motor when an energization amount is a predetermined value or more.