JP2001208433A - Fan forced heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fan forced heater which can perform partial heating in addition to living room heating. SOLUTION: This is a fan forced heater which possesses a heater main body 2 which has a suction port and a blowout port, a blast means 29 for blowing out air sucked from the suction port, a combustion burner 14 for heating the air sucked in, a heating mode setting means for setting a heating mode, and a control means 76 for controlling the combustion of the combustion burner 14. The heating mode setting means can be set to a living room heating mode and a partial heating mode, and in case of living room heating mode, the control means 76 controls the combustion burner 14 so that the temperature of the living room may come to a set temperature, and in case of partial heating mode, the control means 76 controls the combustion burner 14 so that the temperature of the warm air blown out of the blowout port may come to the set temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air heating device for heating a living room using hot air.

[0002]

2. Description of the Related Art A warm air heating apparatus for heating a living room includes a heating apparatus main body installed on a floor or the like, and a heating means such as a blowing means and a combustion burner is provided in the heating apparatus main body. Further, a suction port and a discharge port are provided in the heating device main body, and the air in the living room is sucked through the suction port by the action of the air blowing means, and the sucked air is heated by the heating means. The heated air is blown out from the outlet as warm air by the action of the blowing means, and thus the living room is heated by the warm air.

[0003] In such a hot air heating apparatus, an operation panel is provided on the heating apparatus body, and a temperature setting means for setting a heating temperature is provided on the operation panel. Further, a control means for controlling the heating means is provided, and the control means controls the heating means so that the temperature of the living room depends on the set temperature.

[0004]

In a conventional hot air heating apparatus of this type, the control means controls the heating means so as to maintain the room temperature at a set temperature. Therefore, when it is necessary to heat the entire living room, such as when a plurality of family members are gathered in a general home, the living room space can be comfortably heated with hot air blown out from the outlet. However, even when there is no need to heat the entire living room, such as when a housewife is alone, the entire living room is heated with hot air, which reduces the heating efficiency and reduces the fuel cost (or electricity charge) of the heating means. It will be expensive. For this reason, it is desired to add a function that can locally heat the hot air heating device.

On the other hand, when such a hot air heating device is simply used for local heating, the following problems occur. In this hot air heater, the temperature difference between the living room temperature and the set temperature
The temperature and the amount of hot air blown out from the outlet are adjusted, and when the temperature difference is large and the amount of heating is large, the temperature of the hot air blown out from the outlet reaches up to about 100 ° C, and the amount of blown air is large and very hot. On the other hand, when the temperature difference is small and the heating amount is small,
℃ or lower, and feel cold due to the influence of the airflow of the blast. Therefore, even if the hot air heating device is used for local heating, comfortable local heating cannot be performed, and it is necessary to separately prepare the local heating device to perform local heating as desired.

[0006] It is an object of the present invention to provide a hot air heating device capable of performing local heating in addition to living room heating.

[0007]

According to the present invention, there is provided a heating apparatus body having a suction port and an air outlet, air blowing means for sucking air through the air suction port and blowing out the sucked air from the air outlet, Heating means for heating the air sucked through the suction port, heating mode setting means for setting a heating mode, and control means for controlling the heating means in a mode set by the heating mode setting means; The heating mode setting means can be set to a living room heating mode and a local heating mode, and when the living room heating mode is set by the heating mode setting means, the control means keeps the living room temperature at the set temperature. When the local heating mode is set by the heating mode setting means, the control means Is a warm-air heating apparatus, characterized in that the temperature of the warm air blown out from the mouth and controls said heating means so as to maintain the set temperature.

According to the present invention, the heating mode setting means can set the living room heating mode and the local heating mode. When the living room heating mode is set, the control means controls the heating means so that the living room temperature becomes the set temperature, so that the desired living room can be heated so that the whole living room becomes the set temperature. Further, when the local heating mode is set, the control means controls the heating means so that the temperature of the hot air blown out from the outlet becomes the set temperature, so that the hot air blown out from the outlet is set substantially irrespective of the room temperature. The temperature is maintained, and the desired local heating can be performed by the hot air to be blown out. As the heating means, a combustion burner that burns fuel gas, kerosene, or the like, an electric heater that uses electricity, or the like can be used.

In the present invention, the suction port is provided with first temperature detecting means for detecting the temperature of the air sucked through the suction port, and the outlet is blown through the outlet. Second temperature detecting means for detecting the temperature of the hot air flowing in the room, and in the case of the living room heating mode, the control means controls the detected temperature of the first temperature detecting means to be maintained at a set temperature. The heating unit is controlled, and in the case of the local heating mode, the control unit controls the heating unit such that the temperature detected by the second temperature detecting unit is maintained at a set temperature.

According to the present invention, the first temperature detecting means is provided at the suction port for sucking air, and the second temperature detecting means is provided at the outlet for blowing hot air. In the case of heating the living room, the detected temperature of the first temperature detecting means is used, and the control means controls the heating means so that the detected temperature of the first temperature detecting means becomes the set temperature. can do. In the case of local heating, the temperature detected by the second temperature detecting means is used, and the control means
The heating means is controlled such that the temperature detected by the temperature detecting means becomes the set temperature, whereby local heating can be performed as required.

Further, in the present invention, the control means includes an abnormality detecting means, and when the temperature detected by the first temperature detecting means rises to the abnormal temperature, the abnormality detecting means generates a stop or weak heating signal. The control means stops the operation of the heating means or sets the heating means to a low heating state based on the stop or low heating signal. According to the present invention, the first
When the temperature detected by the temperature detecting means exceeds the abnormal temperature, the abnormal detecting means generates a stop or weak heating signal, and based on the stop or weak heating signal, the operation of the heating means stops or enters a weak heating state. It is possible to prevent the temperature from rising abnormally. The abnormal temperature is, for example, about 30 ° C.
Set to about.

Further, in the present invention, the control means includes an abnormality detecting means, and when the temperature detected by the second temperature detecting means rises to the abnormal temperature, the abnormality detecting means generates a stop or weak heating signal. The control means stops the operation of the heating means or sets the heating means to a low heating state based on the stop or low heating signal. According to the invention, the second
When the temperature detected by the temperature detecting means exceeds the abnormal temperature, the abnormal detecting means generates a stop or weak heating signal, and the operation of the heating means stops or enters a weak heating state based on the stop or weak heating signal. If the outlet is closed with something or foreign matter is inserted into the outlet, the amount of warm air from the outlet decreases and the outlet temperature rises. However, such a rise in temperature due to a decrease in the amount of air can be prevented. The abnormal temperature is, for example, about 70 ° C. or 10 ° C. lower than the set temperature.
Set to a high temperature.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a hot air heating device according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a simplified cross-sectional view of a first embodiment of a hot-air heating device according to the present invention as viewed from the front, and FIG. 2 is a simplified cross-sectional view of the hot-air heating device of FIG. 3 is FIG.
FIG. 4 is a front view showing an operation panel of the hot air heating device of FIG.
FIG. 5 is a block diagram showing a control system of the hot air heating device of FIG. 1; FIG. 5 is a flowchart showing a local heating operation when a local heating mode is set in the hot air heating device of FIG. 1; 4 is a flowchart showing a room heating operation when the room heating mode is set in the warm air heating device of FIG. 1.

Referring to FIGS. 1 and 2, the illustrated hot air heating device includes a rectangular parallelepiped heating device main body 2 installed on the floor of a living room or the like, and an upper portion of a rear surface 4 of the heating device main body 2. An air inlet 6 for sucking air is provided, and an outlet 10 for blowing hot air is provided at a lower portion of a front surface 8 of the air inlet 6. A plurality of guard members 12 are provided at the outlet 10 at intervals in the vertical direction.
Is provided. At a substantially central portion in the heating device main body 2,
A combustion burner 14 constituting a heating means is provided.
In this embodiment, a fuel gas such as city gas or LP gas is used as a fuel, and a fuel gas supply system 16 described later is used.
Through the fuel gas is supplied to the combustion burner 14.

A partition plate 18 and an auxiliary plate 20 are provided in the main body 2 of the heating device. These plates 18 and 20 cover the front side, the bottom side and the back side of the combustion burner 14, and the combustion surface whose upper surface is released is provided. A chamber 22 is defined.
An upper plate 24 is provided above the combustion chamber 22, and a substantially inverted L-shaped partition plate 26 is provided from the upper side of the upper plate 24 to the front side of the partition plate. With this configuration, the upper plate 24
The partition plate 18 and the partition plate 26 form an air flow path 28 extending from the suction port 6 to the outlet 10, and a part of the air sucked through the suction port 6 is supplied to the air flow path 2.
It flows to the outlet 10 through 8. The remainder of the air sucked through the inlet 6 is supplied to the combustion chamber 22 through the space between the auxiliary plate 20 and the upper plate 24 and is used as combustion air. The air that has been mixed into the air flow passage 28 through the space between the upper plate 24 and the upper plate 24 is heated by the combustion exhaust gas, becomes hot air, and is discharged from the outlet 10.

An air flow path 2 is provided in a lower portion of the heating device main body 2.
A blowing means 29 is provided in connection with 8, and the blowing means 29 is composed of a blowing fan 30 and an electric motor 32 for driving the blowing fan 30 to rotate. When the electric motor 32 operates, the blower fan 30 rotates in the direction indicated by the arrow 34, and the rotation of the blower fan 30 causes air to be sucked through the suction port 6. 2 is blown out.
In this embodiment, the rotation of the electric motor 32 is controlled, and when the number of rotations is small (or large), the amount of air blown by the blower fan 30 is small (or large), so that the amount of air intake and the amount of air blow are reduced ( Or more).

Next, the fuel gas supply system 16 will be described. The illustrated fuel gas supply system 16 includes a gas supply pipe 42 constituting a gas supply path, and an electromagnetic opening / closing valve 44 and a governor 46 are provided in the gas supply path. And a proportional valve 48 are provided. One end of the gas supply pipe 42 is connected to the combustion burner 14, and the other end is connected to, for example, a buried pipe or a gas cylinder (not shown) as a gas supply source, and fuel gas from the gas supply source is supplied to the combustion burner 14. Supplied to The solenoid on-off valve 44 opens and closes the gas supply path, the governor 46 maintains the fuel gas flowing through the gas supply path at a predetermined pressure, and the proportional valve 48 controls the fuel gas supplied to the combustion burner 14 through the gas supply path. Control the amount of feed. Further, an ignition device 47 for igniting fuel gas ejected from the combustion burner 14 is provided near the combustion burner 14.

An operation panel 50 is provided on the upper surface of the heating device main body 2.
Is provided. Referring to FIGS. 3 and 4, the operation panel 50 shown in the figure is provided with a power switch 52, a heating mode setting switch 54 constituting a heating mode setting means, a setting changeover switch 56, and a temperature setting means 58. The means 58 includes an up switch 60 and a down switch 6
2 is comprised. The power switch 52 is a switch for operating and stopping the operation of the warm air heating device. When the power switch 52 is pressed, the power switch 52 closes and operates. The heating mode setting switch 54 is a switch for setting the heating mode. In this embodiment, the heating mode setting switch 54 can be switched between the living room heating mode and the local heating mode. Each time the switch 54 is pressed, the living room heating mode and the local heating mode are switched. Set alternately. The setting switch 56 is a switch for switching between a mode for setting the temperature and a mode for setting the time.
Each time is pressed, the temperature setting mode and the time setting mode are set alternately. The temperature setting means 58 is for setting the heating temperature. When the temperature is set to the temperature setting mode at the time of heating the room (or at the time of local heating) and the up switch 60 is pressed, the set temperature of the room heating (or the local heating) is set. Rises,
For example, each time the button is pressed once, the temperature rises by 1 ° C., and when the down switch 62 is pressed, the set temperature of the room heating (or local heating) decreases. For example, each time the button is pressed, the temperature decreases by 1 ° C.
This temperature setting means 58 also functions as time setting means,
When the up switch 60 is pressed in the time setting mode, the set time advances in the forward direction, and when the down switch 62 is pressed, the set time advances in the delay direction.

The operation panel 50 further includes a display device 64.
And an alarm lamp 66 are provided. The display device 64 is composed of, for example, a liquid crystal display device. When the hot air heating device is operating, the set temperature and the detected temperature are displayed (in the case of the room heating mode, the set temperature and the room temperature in the room heating mode are displayed, In the case of the local heating mode, the set temperature and the hot air temperature in the local heating mode are displayed),
When the hot air heater is not operating, the current time is displayed. The alarm lamp 66 is turned on when an abnormality occurs in the hot air heating device to notify the operator of the abnormality. In this embodiment, the occurrence of the abnormality is notified by the alarm lamp 66, but the occurrence of the abnormality may be notified by an abnormality buzzer instead or together with this.

This warm air heating device includes a first temperature detecting means 70 for detecting the temperature of the living room, a second temperature detecting means 72 for detecting the temperature of the hot air blown from the warm air heating apparatus, A thermocouple 74 as combustion detection means for detecting combustion of the combustion burner 14 is provided. The first temperature detecting means 70 is provided at the suction port 6 of the hot air heating device,
The temperature of the air sucked through the suction port 6, in other words, the temperature of the air in the living room is detected. The second temperature detecting means 72 is provided at the outlet 10 of the hot air heating device (more specifically, inside the guard member 12), and detects the temperature of the hot air blown from the outlet 10 as described later. Is detected. Further, the thermocouple 74 is disposed close to and above the combustion burner 14, and detects whether the combustion burner 14 is in a combustion state.

The hot air heating apparatus further includes control means 76 for controlling the operation of the gas supply system 16 and the like. The control means 76 is composed of, for example, a microprocessor, and includes a first memory 78, a second memory 80, a third memory 82, an abnormality detection means 84, and a timer 86. In the first memory 78, the temperature set by the temperature setting means 58,
That is, the room setting temperature in the living room heating mode and the local setting temperature in the local heating mode are stored, and when newly set by the temperature setting means 58, the set temperature is stored. The second memory 80 stores a control program for the hot air heating device, that is, a living room heating control program and a local heating control program, and reads a control program corresponding to the heating mode set by the heating mode setting switch 54. The third memory 82 stores an abnormal temperature together with a settable temperature range. In this mode, in the living room heating mode, for example, the temperature can be set in the range of 10 to 28 ° C.
The temperature can be set in the range of up to 60 ° C., and these settable temperature ranges are stored. In addition, for example, 30 ° C. is stored as the abnormal temperature of the living room, and, for example, 70 ° C. and (set temperature + 10) ° C. are stored as the abnormal temperatures of the hot air to be blown out. The abnormality detecting means 84 of this embodiment generates a stop signal when the living room temperature, that is, the detected temperature of the first temperature detecting means 70 becomes 30 ° C. or higher in the living room heating mode and the local heating mode, as will be described later. In the mode and the local heating mode, a stop signal is generated when the hot air temperature of the outlet 10, that is, the detected temperature of the second temperature detecting means 72 becomes 70 ° C. or more, and the hot air temperature of the outlet 10 is set in the local heating mode. When the temperature becomes higher than the temperature by 10 ° C. or more, a stop signal is generated. When the abnormality detection means 84 generates the stop signal, the combustion burner 1
The combustion of No. 4 stops. Instead of generating the stop signal, the abnormality detecting means 84 may generate a weak heating signal. In such a case, the combustion of the combustion burner 14 becomes weak combustion based on the weak heating signal. . The timer 86 measures the time, and the ignition is confirmed using the time of the timer 86. The control means 76 includes the blowing means 29, the proportional valve 4
8. The operation of the electromagnetic on-off valve 44, ignition device 47, governor 46 and alarm lamp 66 is controlled as described later.

Next, the operation of the above-described warm air heating apparatus will be described with reference to FIGS. 1, 2, and 4 to 6. First, the local heating by the hot air heating device will be described with reference to FIGS. 1, 2, 4 and 5 as follows. First,
The power switch 52 is closed (step S-1), and then the local heating mode is set by operating the heating mode setting switch 54 (step S-2). Thus, the local control program stored in the second memory 80 is read, and the following operation by the local control program is performed.

First, the blowing means 29 is operated at a low rotation speed (step S-3), and air is sucked from the suction port 6 of the heating device body 2, and a part of the sucked air is supplied to the air flow path. The remainder flows into the combustion chamber 22. Next, the proportional valve 48 is fully opened (step S-
4), the ignition device 47 is activated (step S-5), and the electromagnetic on-off valve 44 is opened in a state where a spark is generated from the ignition device 47 (step S-6). In this way, the fuel gas is supplied through the gas supply pipe 42, and the spark of the ignition device 47 ignites the fuel gas ejected from the combustion burner 14, thereby burning the fuel gas. During a predetermined time after the operation of the ignition device 47, the thermocouple 74 detects whether or not the combustion burner 14 is in an ignition state (step S-).
7) If the combustion burner 14 is in a combustion state, it is determined that the combustion burner is operating normally, and the process proceeds to step S-8, and the operation of the ignition device 47 stops. On the other hand, if the combustion burner 14 is not in the combustion state, some abnormality or failure has occurred, and in this case, the process proceeds to step S-9.

When the process proceeds to step S-9 due to the occurrence of an abnormality or a failure, the control means 76 generates an abnormality signal, and the proportional valve 48 is fully closed based on the abnormality signal (step S-1).
0), the solenoid on-off valve 44 is closed (step S-1).
1) As a result, the supply of the fuel gas through the gas supply pipe 42 is stopped. Further, the operation of the blowing means 29 is stopped (S-12), whereby the suction of air through the suction port 6 is stopped, and the operation of the warm air heating device is stopped. Thereafter, the alarm lamp 66 is turned on based on the abnormal signal, and the lighting allows the operator to know that some abnormality or failure has occurred. Thereafter, the cause of the abnormality or failure is removed (step S-14), and the process returns to step S-1 to close the power switch 52, whereby the hot air heating device can be operated.

When normal combustion is performed and the process proceeds from step S-8 to step S-15, local heating is performed by the hot air proportional control. In the local heating mode, the control means 76 performs the hot air proportional control so that the hot air blown from the outlet 10 of the heating device main body 2 has the set temperature. That is, when the temperature of the hot air to be blown, that is, the temperature difference between the temperature detected by the second temperature detecting means 72 and the set temperature is large (or small), the amount of air blown by the blowing means 29 increases (or decreases), and The supply amount of the fuel gas supplied to the combustion burner 14 increases (or decreases), and accordingly, the combustion exhaust gas increases (or decreases), and the temperature of the blown hot air increases (or decreases). Then, the warm air of the set temperature is blown out from the blowout port 10.

In step S-16, it is determined whether the temperature of the hot air from the outlet 10 has risen to 10 ° C. or more from the set temperature during such hot air proportional control. If not, it is in a state of normal operation, and in this case, the process proceeds to step S-17. On the other hand, if the temperature of the hot air rises to 10 ° C. or more from the set temperature, the hot air heating device may have some abnormality or failure, and the hot air temperature may rise (for example, the outlet 10
In such a case, the temperature of the hot air rises as described above. In this case, the abnormality detection means 84 of the control means 76 generates a stop signal, and based on the stop signal, the blowing means 29
Is stopped (step S-18), the proportional valve 48 is fully closed (step S-19), and the electromagnetic on-off valve 44 is closed (step S-20), thereby stopping the operation of the warm air heating device. Then, the process proceeds to step S-13, where the alarm lamp 66 is turned on.

When the process proceeds from step S-16 to step S-17, it is determined whether or not the living room temperature, that is, the temperature detected by the first temperature detecting means 70 is 30 ° C. or higher. It is determined that the temperature is not abnormally high, and the process proceeds to step S-21. On the other hand, when the living room temperature rises to 30 ° C. or more, the local heating is being performed, but the entire living room is warmed to a state where it is not necessary to continuously perform the local heating. The detecting means 84 generates a stop signal from a safety aspect, and based on the stop signal, the electromagnetic on-off valve 44 is closed (step S-2).
2), the proportional valve 48 is fully closed (step S-23),
Further, the operation of the blowing means 29 stops (step S-2).
4) Due to this, the operation of the hot air heating device is stopped. Then, in step S-25, the temperature of the living room is, for example, 2
When the temperature falls to 0 ° C. or lower, the process returns to step S-3, and the above-described local heating is restarted.

When the process proceeds from step S-17 to step S-21, it is determined whether or not the temperature of the hot air from the outlet 10, that is, the temperature detected by the second temperature detecting means 72 is 3 ° C. or more than the set temperature. When the temperature is not higher than the set temperature by 3 ° C. or more, it is a state in which heating is required continuously. In this case, the process returns to step S-15, and the above-described hot air proportional control is continuously performed. On the other hand, when the temperature of the hot air rises by 3 ° C. or more from the set temperature, the control means 76 generates a stop signal assuming that the temperature of the blown hot air has risen, and based on the stop signal, the above-described step S-22. Step S-25 is performed.

As described above, when the local heating mode is set, the combustion of the combustion burner 14 and the amount of air blown by the air blowing means 29 are controlled so that the temperature of the hot air blown from the outlet 10 is maintained at the set temperature. Therefore, the area in front of the outlet 10 is locally heated, so that a narrow area can be locally heated as desired, and the heating efficiency can be improved when the user is alone. Next, FIGS. 1, 2, 4 and 6
The following describes the room heating by the hot air heating device with reference to FIG. First, the power switch 52 is closed (step S-31), and then the heating mode setting switch 54 is operated to set the living room heating mode (step S-32). Thus, the second memory 8 of the control means 76
The room control program stored in 0 is read,
The following operations are performed by the living room control program.

First, the blowing means 29 is operated at a low rotation speed (step S-33), the proportional valve 48 is fully opened (step S-34), and the ignition device 47 is operated (S-3).
5) Then, the solenoid on-off valve 44 is opened (step S).
-36), the fuel gas from the combustion burner 14 burns. Thereafter, in step S-7, it is detected whether or not the combustion burner 14 has been ignited.
Proceeding to 38, the operation of the ignition device 47 stops. On the other hand, if it is not in the ignition state, the process proceeds to step S-39, and step S3
Steps 9 to S-44 are performed. These steps S
The operations in steps 33 to S-44 are substantially the same as the operations in steps S-3 to S-14 in FIG.

When the process proceeds from step S-38 to step S-45, the room is heated by proportional control of hot air. In the living room heating mode, the control means 76 performs the hot air proportional control so that the air sucked from the suction port 6 of the heating device main body 2 has the set temperature. That is, if the temperature of the air to be sucked, that is, the temperature difference between the detected temperature of the first temperature detecting means 70 and the set temperature is large (or small), the amount of air blown by the blowing means 29 increases (or decreases) and the combustion increases. Burner 14
The amount of fuel gas supplied to the plant is large (or small)
Therefore, the amount of the combustion exhaust gas increases (or decreases), and the temperature of the hot air blown out increases (or decreases), and thus the heating of the living room is performed strongly (or weakly).

In step S-46, during such hot air proportional control, it is determined whether or not the temperature of the hot air from the outlet 10 has risen to 70 ° C. or higher. It is operating, and in this case, it proceeds to the next step S-47. On the other hand, when the temperature of the hot air is 7
If the temperature rises to 0 ° C or higher, some abnormality may occur in the hot air heater,
This is the case where a failure has occurred and the temperature of the hot air has risen. In this case, the abnormality detection means 84 of the control means 76 generates a stop signal, and the operation of the blower means 29 is stopped based on the stop signal (step S). -48), the proportional valve 48 is fully closed (step S-49), and the solenoid on-off valve 44 is closed (step S-49).
-50), and the alarm lamp 66 is turned on (step S).
-43). These steps S-48 to S-50
The operation of Step S-43 is substantially the same as the operation of Step S-18 to Step S-20 and Step S-13 in FIG.

When the process proceeds from step S-46 to step S-47, it is determined whether the living room temperature, that is, the temperature detected by the first temperature detecting means 70 is 30 ° C. or more. Proceed to S-51. On the other hand, when the living room temperature rises to 30 ° C. or higher, the abnormality detecting means 84 of the control means 76 generates a stop signal in the same manner as described above, and the electromagnetic on-off valve 44 is closed based on the stop signal (step S).
-52), the proportional valve 48 is fully closed (step S-5).
3) Further, the operation of the blowing means 29 is stopped (step S-
54), whereby the operation of the hot air heating device is stopped.
Then, when the temperature of the living room falls to, for example, 2 ° C. or less from the set temperature in Step S-55, Step S-33
And the above-described heating of the living room is restarted.

When the process proceeds from step S-47 to step S-51, it is determined whether the temperature of the sucked air, that is, the temperature detected by the first temperature detecting means 72 is higher than the set temperature by 2 ° C. or more. If not more than 2 ° C., step S-1
Returning to step 5, the above-described hot air proportional control is continuously performed.
On the other hand, when the temperature of the sucked air rises by 2 ° C. or more from the set temperature, the control means 76 generates a stop signal assuming that the living room is heated, and based on the stop signal, the above-described steps S-52 to S-52. S-55 is performed. As described above, when the living room heating mode is set, the entire living room can be heated to the set temperature in the same manner as in the related art, and the heating effect at the time of heating the living room can be enhanced.

While the embodiment of the hot air heating apparatus according to the present invention has been described above, the present invention is not limited to such an embodiment, and various modifications and alterations can be made without departing from the scope of the present invention. It is possible. For example, in the illustrated embodiment, in the local heating mode, when the hot air temperature becomes 10 ° C. or more than the set temperature, and when the living room temperature becomes 3 ° C.
If the temperature exceeds 0 ° C., the abnormality detection means 84 generates a stop signal.
Only when this is the case, the abnormality detection means 84 may generate a stop signal. Further, in the living room heating mode, when the temperature of the hot air becomes 70 ° C. or more, or when the temperature of the suction air becomes 30 ° C. or more, the abnormality detecting means 8
4 generates a stop signal.
The abnormality detection means 84 may generate a stop signal only when the temperature has become equal to or higher than ° C.

For example, in the illustrated embodiment, in the local heating mode, the temperature of the hot air is kept constant by using the temperature detected by the second temperature detecting means 72 provided in the outlet 10. However, it is not always necessary to use the second temperature detecting means 72. For example, by keeping the opening of the proportional valve 48 at a predetermined opening corresponding to the set temperature, the combustion exhaust gas of the combustion burner 14 is set to a predetermined amount. The temperature may be maintained at the set temperature.

Further, for example, although not particularly set in the illustrated embodiment, in the case of the local heating mode, the continuous heating time may be limited in relation to the set temperature to further secure the safety. . For example, when the temperature of the hot air from the outlet 10 is set to 45 to 50 ° C., the continuous heating time is set to, for example, 5 hours. When the temperature of the hot air is set to 50 to 55 ° C., the continuous heating time is set to, for example, 3 hours. Furthermore, when the temperature of the hot air is set to 55 to 60 ° C., the continuous heating time may be limited to, for example, one hour. In other words, the continuous heating time may be limited to be shorter as the set temperature is increased. .

Further, for example, in the illustrated embodiment, the description has been made by applying the present invention to a hot air heating apparatus using a combustion burner 14 for burning a fuel gas as a heating means, but the present invention is not limited to this. The present invention can be similarly applied to a hot air heating device using a combustion burner that burns, for example, kerosene), and a hot air heating device using an electric heater.

[0039]

According to the hot air heating apparatus of the first aspect of the present invention, the heating mode setting means can set the living room heating mode and the local heating mode. In the case of the living room heating mode, the entire living room is set to the set temperature. In the local heating mode, the warm air blown from the outlet is maintained at the set temperature, and the warm air can perform the local heating.

According to the second aspect of the present invention, in the case of heating a living room, the detected temperature of the first temperature detecting means provided at the suction port is used, and the detected temperature is set to the set temperature. By controlling the heating means in such a manner, the room can be heated as desired. In the case of local heating, the temperature detected by the second temperature detecting means provided at the outlet is used, and the heating means is controlled such that the detected temperature becomes the set temperature, thereby performing local heating as desired. be able to. Further, according to the warm air heating device of the third aspect of the present invention, it is possible to prevent the room temperature from rising abnormally. Further, according to the warm air heating device of the fourth aspect of the present invention, it is possible to prevent the temperature of the blown hot air from rising abnormally.

[Brief description of the drawings]

FIG. 1 is a simplified cross-sectional view of a first embodiment of a hot-air heating device according to the present invention as viewed from the front.

FIG. 2 is a simplified sectional view of the hot air heating device of FIG. 1 as viewed from a side.

FIG. 3 is a front view showing an operation panel of the hot air heating device of FIG. 1;

FIG. 4 is a block diagram illustrating a control system of the hot air heating device of FIG. 1;

FIG. 5 is a flowchart showing a local heating operation when a local heating mode is set in the hot air heating device of FIG. 1;

FIG. 6 is a flowchart showing a living room heating operation when the living room heating mode is set in the hot air heating device of FIG. 1;

[Brief description of reference numerals]

 2 Heating device body 6 Suction port 10 Blow-out port 14 Combustion burner 16 Gas supply system 22 Combustion chamber 29 Blowing means 30 Blowing fan 50 Operation panel 54 Heating mode setting switch 70 First temperature detecting means 72 Second temperature detecting means 76 Control means 84 Abnormality detection means

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Tetsuya Hiraoka 4-1-2 Hirano-cho, Chuo-ku, Osaka-shi F-term in Osaka Gas Co., Ltd. (reference) 3L028 EA01 EB02 EB03 EC01 ED01

Claims (4)

[Claims] 1. A heating device main body having a suction port and an air outlet, air blowing means for sucking air through the air suction port and blowing out the sucked air from the air outlet, and heating the air sucked through the air suction port. Heating means for setting, a heating mode setting means for setting a heating mode, and a control means for controlling the heating means in a mode set by the heating mode setting means, the heating mode setting The means can be set to a living room heating mode and a local heating mode, and when the living room heating mode is set by the heating mode setting means, the control means controls the heating means so that the living room temperature is maintained at the set temperature. Then, when the local heating mode is set by the heating mode setting means, the control means controls the temperature discharged from the outlet. It said controlling the heating means warm-air heating apparatus according to claim so that the temperature is maintained at the set temperature. 2. A first temperature detecting means for detecting a temperature of air sucked through the suction port is provided at the suction port, and a temperature of hot air blown through the blow port is provided at the blow port. Second temperature detecting means for detecting a temperature is provided, and in the case of the living room heating mode, the control means controls the heating means so that the detected temperature of the first temperature detecting means is maintained at a set temperature. And controlling the heating means so that the temperature detected by the second temperature detecting means is maintained at a set temperature in the local heating mode. Wind heating system. 3. The control means includes an abnormality detection means. When the temperature detected by the first temperature detection means rises to an abnormal temperature, the abnormality detection means generates a stop or weak heating signal, and the control means 3. The hot air heating apparatus according to claim 1, wherein the operation of the heating unit is stopped or set to a weak heating state based on the stop or weak heating signal. 4. The control means includes an abnormality detection means, and when the temperature detected by the second temperature detection means rises to an abnormal temperature, the abnormality detection means generates a stop or weak heating signal, and the control means 3. The hot air heating apparatus according to claim 1, wherein the operation of the heating unit is stopped or set to a weak heating state based on the stop or weak heating signal.