JP3394699B2 - Hot air heater with air purifier - Google Patents

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 having an air purifier.

[0002]

2. Description of the Related Art An air purifier is provided with a dust collecting means such as a dust collecting filter and a blowing means for cleaning, and the indoor air sucked into the air purifier by the operation of the blowing means for cleaning is filtered by the dust collecting filter. It purifies by passing it and blows the purified air into the room. Further, in such an air purifier, generally, the dust collecting ability can be changed by changing the amount of air blown by the blowing means for cleaning, that is, the amount of air passing through the dust collecting filter. For example, it is equipped with a cleaning sensor that detects the amount of dust, odor, and other components in the air that is drawn into the air purifier, and the air flow rate of the cleaning air blower is automatically changed according to the amount detected by this cleaning sensor. What is known is. Further, it is provided with an air flow rate setting means for setting the air flow rate according to the dust collection capacity such as weak, medium, and strong so that the air cleaning operation can be performed at the air flow rate suitable for the user's preference. Things are known.

On the other hand, the warm air heater is equipped with a burner and a combustion blower for supplying combustion air to the burner, and the air and fuel sucked into the warm air heater by the operation of the combustion blower. It is mixed and burned by a burner. Further, the warm air heater is equipped with an ignition means (for example, an igniter) for igniting the burner, supplies a gas amount suitable for ignition when the burner is ignited, and controls the air flow amount of the combustion blower. The burner is ignited by supplying an amount of air suitable for ignition and operating the ignition means for a predetermined time. Then, at the time of ignition, the ignition detection means such as a thermocouple detects the ignition state of the burner,
When ignition is not detected by the ignition detecting means within a predetermined time from the start of ignition, the gas supply to the burner is stopped as non-ignition.

In recent years, there has been a demand for an air purifier and a warm air heater which are integrally provided to improve convenience. As described above, in the warm air heating device with an air purifier that has both an air purifier and a warm air heater, the air purifier and the warm air heater may be used at the same time, or they may be used individually. May be. By the way, when the air purifier and the warm air heater are integrated, when the air purifier and the warm air heater are used at the same time, the air intake of the warm air heater is prevented in order to prevent interference between them. Although it is preferable that the mouth and the air suction port of the air purifier are independent from each other, there are cases where the respective air suction ports are provided close to each other in consideration of downsizing of the device.

However, when the respective air intake ports are provided close to each other, in the warm air heater, the amount of air supplied to the burner, which should be controlled by the amount of air blown by the blower for combustion, should be controlled for cleaning. It may be affected by the amount of air blown by the air blower. In particular, when the amount of air blown by the cleaning air blower changes when the burner is ignited, the flow and pressure of the air near the air inlet of the warm air heater fluctuate accordingly, and the amount of air supplied to the burner changes. It becomes unstable. As a result, fluctuations or the like occur in the flame of the burner at the time of ignition, so that when the ignition detection means detects the ignition of the burner, the ignition cannot be detected accurately. In this way, when ignition cannot be accurately detected by the ignition detection means, it is determined that the burner is not ignited by the hot air heater, and the supply of gas to the burner is stopped as non-ignition,
The hot air heater may not be ignited.

[0006]

SUMMARY OF THE INVENTION The present invention aims to improve a hot-air heating device with an air purifier. An object of the present invention is to provide a warm air heating device with an air purifier that does not affect the ignition of the warm air heater even if the air volume changes.

[0007]

In order to achieve the above-mentioned object, a warm air heating device with an air purifier according to the present invention is a warm air with an air purifier in which an air purifier and a warm air heater are provided side by side. A heating device, wherein the air purifier is sucked through a cleaning suction port.
A dust collecting means for purifying the filled-in air, air volume can be altered and cleaning blower means for blowing air which has been cleaned by the dust collection unit into the room, clean for controlling the air volume of the cleaning blower means And a hot air heater,
Suction port for heating provided near the suction port for cleaning
A burner that heats the air sucked from the heating inlet , a combustion blower that supplies combustion air to the burner, an ignition means that ignites the burner, and an ignition that detects the ignition state of the burner. The purifier control means includes a detection means and an ignition control means for controlling the fuel supply amount and the combustion air amount to the burner at the time of ignition of the burner so that the supply amount and the air amount are respectively suitable for ignition. In the above, the change of the air flow rate of the cleaning air blower is prohibited for a predetermined time after the ignition of the burner is started.

According to this, since the purifier control means prohibits the change of the blowing amount of the cleaning blower for a predetermined time after the ignition of the burner is started, the combustion blower is ignited when the burner is ignited. Fluctuation does not occur in the air supplied by. Therefore, there is no inconvenience that although the burner is actually ignited, the ignition detection means determines that the ignition is not ignited and the hot air heater cannot be ignited.

Further, the air purifier includes a cleaning sensor for detecting the amount of a component contained in the air, and the purifier control means has a larger air blowing amount as the detected amount of the cleaning sensor increases. Thus, when it is intended to change the air flow rate of the cleaning air blower according to the detected amount, regardless of the change in the detected amount of the cleaning sensor for a predetermined time after the ignition of the burner is started, It is preferable to prohibit the change of the blowing amount of the cleaning blowing unit.

According to this, even if the detected amount of the cleaning sensor changes when the burner is ignited, the blown amount of the cleaning blower does not change for a predetermined time.
When the burner is ignited, the ignition detection means can reliably detect the ignition of the burner.

Further, the air purifier comprises an air flow rate setting means for setting the air flow rate of the cleaning air flow means, and a display means for displaying the air flow rate set by the air flow rate setting means. The purifier control means displays the display when the air flow rate setting means instructs to change the air flow rate of the cleaning air flow means within a predetermined time after the ignition of the burner is started. The device to display the changed air flow rate, prohibit the change of the air flow rate of the cleaning air flow means, and operate the cleaning air flow means with the changed air flow rate after the elapse of the predetermined time. Preferably.

According to this, even if the air flow rate setting means gives an instruction to change the air flow rate of the cleaning air flow means when the burner is ignited, the air flow rate of the cleaning air flow means does not change for a predetermined time. Therefore, it is possible to reliably detect the ignition of the burner by the ignition detecting means. On the other hand, in the display means, when there is an instruction to change the air flow rate of the cleaning air flow means, the display means displays the changed air flow rate according to the changed air flow rate. Since the display means is changed immediately when the setting means changes the air flow rate, the user does not feel uncomfortable.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a gas fan heater equipped with an air purifier, which is an example of an embodiment of a warm air heating apparatus with an air purifier of the present invention, will be described with reference to FIGS. 1 to 8. . FIG. 1 is an explanatory sectional view of a gas fan heater with an air purifier of the present embodiment, FIG. 2 is an explanatory view showing its operation panel, FIG. 3 is a block diagram showing its circuit configuration, and FIGS. 7 is an explanatory diagram showing the amount of dust in the air and the operating state of the air purifier when the air purifier is in automatic operation, and FIG. 8 is the flow chart when the air purifier is in manual operation. It is explanatory drawing which shows the operating state of an air cleaner.

As shown in FIG. 1, the gas fan heater 1 with an air purifier of the present embodiment has an air purifier 3 installed in an upper portion of a main body 2 thereof, and a gas which is a warm air heater in a lower portion of the main body 2. The fan heater 4 is incorporated. A cleaning inlet 5 is provided on the upper rear surface of the main body 2, and a cleaning outlet 6 is provided on the upper surface of the main body 2. A heating suction port 7 is provided in the lower rear portion of the main body 2, and a heating outlet 8 is provided in the lower front portion of the main body 2.

The air purifier 3 is provided with a purifier case 9 inside the main body 2, and a cleaning blower 10 (cleaning blower means) is provided inside the purifier case 9. Further, the cleaning suction port 5 is provided with a dust collecting filter 11 (dust collecting means) so as to cover the entire surface thereof. Further, on the upstream side of the dust collecting filter 11, a dust sensor 1 for detecting the amount of dust in the air sucked into the air purifier 3, smoke of cigarettes, etc.
2 (cleaning sensor) is provided.

The gas fan heater 4 is provided with a heater case 13 inside the main body 2, and a burner accommodating portion 14 is provided inside the heater case 13. Further, a gas burner 15 is provided inside the burner accommodating portion 14, and an air intake 16 is provided at the lower rear portion of the burner accommodating portion 14. A heating blower 17 (heating blower) is provided below the burner housing 14 inside the heater case 13. In the present embodiment, the heating blower 17 also serves as a combustion blower that supplies combustion air to the gas burner 15. Further, the burner housing 14 is provided with an igniter 18, which is an ignition means for igniting the gas burner 15, and a thermocouple 19 for detecting the ignition state of the gas burner 15. Also, the gas burner 15
A gas solenoid valve and a gas proportional valve (not shown) are provided in the passage for supplying the fuel gas to.

An operation panel 20 is provided in front of the upper surface of the main body 2 for the user to operate the air purifier 3 and the gas fan heater 4. On the operation panel 20,
As shown in FIG. 2, a heating operation switch 21 for turning on / off the heating operation by the gas fan heater 4 and a clean operation switch 22 for turning on / off the air cleaning operation of the air purifier 3 are provided. Further, an air volume changeover switch 23 (air volume setting means) for switching the air volume of the cleaning air blower 10, and an air volume display lamp 2 showing the air volume of the cleaning air blower 10 switched by this air volume changeover switch 23.
4 (display means) is provided. In this embodiment, each time the air volume selector switch 23 is pressed, the air volume indicator lamp 24 switches between four stages of automatic, weak, medium, and strong, and when the air volume selector switch 23 is pressed in the strong state, it automatically returns to automatic. It is set. Also, when the air volume indicator lamp 24 is weak, the rotation speed of the cleaning blower 10 is 500 r.
It is set to be pm, and when it is medium, it is 6
It is set to 00 rpm, and when it is high, it is set to 800 rpm. When set to automatic, the controller 25, which will be described later, is set to automatically change the air flow rate to weak, medium, or strong. The operation panel 20 is additionally provided with a switch for time adjustment and a switch for setting a timer, but since they are the same as known ones, the description thereof will be omitted.

As shown in FIG. 1, a dust sign 26 is provided above the front surface of the main body 2 to indicate the clean level of the indoor air according to the amount of dust in the air, smoke of cigarettes, odor, and the like. The dust sign 26 is formed to emit green light when the detected amount of dust or the like is small, and sequentially switches from green light emission to orange light emission and then red light emission as the detected amount increases.

As shown in FIG. 1, a controller 25 for controlling the operation of the air purifier 3 and the gas fan heater 4 is provided inside the main body 2. As shown in FIG. 3, the controller 25 is provided with a purifier control means 27 for controlling the rotation speed of the cleaning blower 10 and a display control means 28 for changing the display of the air volume display lamp 24 and the dust sign 26. Has been. Further, an ignition control means 30 for igniting the gas burner 15 by the igniter 18, controlling the fuel supply amount to the gas burner 15 by the gas proportional valve 29, and adjusting the amount of combustion air supplied to the gas burner 15 by the heating blower 17. Is provided. Further, an ignition detecting means 31 for detecting the ignition state of the gas burner 15 by the thermocouple 19 is provided.

Next, the operation of the gas fan heater with an air purifier 1 of this embodiment will be described with reference to FIGS. 4 to 8. In this embodiment, when the user turns on the clean operation switch 22 (STEP 1), the cleaner control means 27 detects whether the air cleaner 3 is set to the automatic operation or the manual operation. (STEP
2). Specifically, it is detected by the air volume changeover switch 23 whether the air volume display lamp 24 is set to automatic or weak, medium or strong manual. When the air volume indicator lamp 24 is automatic (YES in STEP2), the purifier control means 27 controls the automatic operation of FIG. 5 (STEP3), and when it is manual (NO in STEP2). The control during the manual operation of FIG. 6 is performed (STEP 4). Then, the above operation is continued until the clean operation switch 22 is turned off by the user (NO in STEP 5).

Next, the operation of the gas fan heater 1 with an air purifier when the air purifier 3 is set to the automatic operation will be described with reference to FIGS. 5 and 7. In the automatic operation of the air cleaner 3, immediately after the cleaning operation switch 22 is turned on, the cleaner blower 10 is rotated in a strong state by the cleaner control means 27, and the display control means 2 is operated.
8 causes the dust sign 26 to emit green light. next,
In this state, the dust sensor 12 detects the amount of dust and the like in the air (STEP 11). Here, since the amount of dust and the like is large in the room where the air is not cleaned, as shown at point a in FIG. 7A, the amount of air blown by the blower 10 for cleaning is strong. . Next, the purifier control means 27 determines the target rotation speed of the cleaning blower 10 according to the detection amount of the dust sensor 12 (STEP 12). At this point in time, since the blower volume of the cleaning blower 10 is strong, the target rotation speed is 8
It is set to 00 rpm.

Next, the purifier control means 27 determines whether or not the current rotational speed of the cleaning blower 10 is different from the target rotational speed (STEP 13). At this point, the cleaning blower 10 is operating at 800 rpm, and the target rotation speed is also 800 rpm, so they do not differ (NO in STEP 13). Therefore, the cleaning blower 10 rotates at 800 rpm which is the same rotation speed. On the other hand, the dust sign 26 emits green light immediately after the cleaning operation switch 22 is turned on, but since the rotation speed of the cleaning blower 10 is 800 rpm, FIG.
As indicated by point a in (b), the display control means 28 changes the light emission to red according to the rotation speed of the cleaning blower 10 (STEP 15). Then, returning to the flow of FIG. 4, the air cleaning operation is continued until the cleaning operation switch 22 is turned off (NO in STEP 5). Thus, when the air cleaning operation is continued, the amount of dust and the like in the air in the room gradually decreases as shown in FIG.

On the other hand, the heating operation switch 21 is operated by the user.
When is turned on, the operation of the gas fan heater 4 is started as indicated by point e in FIG. First, the ignition control means 30 rotates the blower 17 for heating to introduce air from the suction port 7 for heating, and at the same time opens a gas solenoid valve and a gas proportional valve (not shown) to supply the combustion air and the fuel gas to the gas burner 15. It is supplied and the gas burner 15 is ignited by the igniter 18. Then, when the gas burner 15 is ignited, the ignition detection means 31 detects the ignition by the thermocouple 19. Here, as for the combustion air, since the air near the rear of the main body 2 is taken in by the heating blower 17 through the heating suction port 7, the rotation speed of the cleaning blower 10 changes when the gas burner 15 is ignited. Then, the suction port 5 for cleaning
The amount of air sucked into the body changes, causing turbulence in the air flow behind the main body 2. Therefore, in the present embodiment, when the air flow rate of the air purifier 3 is changed within a predetermined time after ignition of the gas burner 15, the air purifier 3 is controlled as follows.

If the detection amount of the dust sensor 12 decreases due to a decrease in the amount of dust and the like in the air as the air cleaning operation continues, as shown at point b in FIG. Since the amount of air blown by the blower 10 is a detection amount corresponding to the inside (STEP 11), the target rotation speed is set to 600 rpm by the purifier control means 27 (STEP 12).
Therefore, the rotational speed is different between the current rotational speed of 800 rpm and the target rotational speed of 600 rpm (YES in STEP 13). At this time, the purifier control means 27 detects whether or not a predetermined time has elapsed from the start of ignition of the gas burner 15. At point b in FIG. 7B, since it is within the predetermined time from the start of ignition of the gas burner 15 (NO in STEP 14), it is prohibited to change the rotation speed of the cleaning blower 10 until the predetermined time elapses, and dust is generated. It is prohibited to change the display of the sign 26.

Then, as shown at point c in FIG.
When a predetermined time has elapsed from the start of ignition of the gas burner 15 (YES in STEP 14), the purifier control means 2
7 is the cleaning fan 10 is a target rotation speed of 600 rp
Rotate at m to change the display of dust sign 26 to orange (STEP 15). In the present embodiment, the predetermined time is set to 10 seconds in consideration of the time from the ignition start of the gas burner 15 to the stable combustion of the gas burner 15. Further, when the amount of dust and the like in the air is further reduced to a detected amount corresponding to a weak amount of air blown by the cleaning blower 10 as shown at point d in FIG. 7A (STEP 11 ),
The target rotation speed is set to 500 rpm by the purifier control means 27 (STEP 12). Therefore, although the rotational speed is different between the current rotational speed of 600 rpm and the target rotational speed of 500 rpm (YES in STEP 13), at the time of d in FIG. Has passed (STEP1
4, YES), the purifier control means 27 rotates the cleaning blower 10 at the target rotation speed of 500 rpm,
Change the dust sign 26 to green emission (STEP
15).

As described above, in the gas fan heater 1 with an air purifier of the present embodiment, even when the amount of air blown by the air purifier 3 is changed when the gas burner 15 is ignited,
Since the change is prohibited for a predetermined time, there is no inconvenience such as the flame fluctuating when the gas burner 15 is ignited. Therefore, the ignition can be reliably detected by the ignition detecting means 31 and the thermocouple 19.

Next, the operation of the gas fan heater with an air purifier 1 when the air purifier 3 is set to the manual operation will be described with reference to FIGS. 6 and 8. In the manual operation of the air purifier 3, the cleaning blower 10 is rotated according to the air volume set by the air volume selector switch 23 (STEP 21). Taking the case where the blow rate is set to be weak as an example, the cleaning blower 10 has 5
It is rotated at 00 rpm, and the air volume indicator lamp 24 is lit with a weak indication. The user selects the air volume selector switch 2
Unless the air flow rate is changed by 3, the blower 10 for cleaning
Is operated at this rotational speed of 500 rpm (STEP2
2 NO).

At this time, the user operates the heating operation switch 21.
When is pressed to start the operation of the gas fan heater 4, as shown in FIG.
The ignition of the gas burner 15 is performed, as indicated by point f. In this state, when the user changes the air flow rate with the air flow rate changeover switch 23 and the air flow rate is set to medium,
As indicated by the point g, the air volume display lamp 24 displays the inside of the changed air volume (STEP 23). At this time, the purifier control means 27 detects whether or not a predetermined time has elapsed from the start of ignition of the gas burner 15. 8g
At this time, since the predetermined time has not elapsed since the ignition of the gas burner 15 was started (NO in STEP 24), the rotation speed of the cleaning blower 10 is not changed within this predetermined time.

Here, when the user sets the air flow rate to a high level by the air volume changeover switch 23, as shown at point h in FIG. 8, the air volume display lamp 24 displays a strong air flow rate after the change. (STEP 23). On the other hand, g and h in FIG.
At this time point, the predetermined time has not elapsed from the start of ignition of the gas burner 15 (NO in STEP 24), so the rotation speed of the cleaning blower 10 is not changed. And
As indicated by point i in FIG. 8, after the elapse of a predetermined time, the rotation speed of the cleaning blower 10 is changed to a strong target rotation speed of 800 rpm, which is the changed air flow rate (STEP 25).

As described above, when the user changes the air flow rate of the air purifier 3 within a predetermined time from the start of ignition of the gas burner 15, the air flow rate indicator lamp 24 is operated according to the user's operation.
Since the display of is changed, the user does not feel uncomfortable in operation. On the other hand, the rotation speed of the cleaning blower 10 is not changed when the user operates it within a predetermined time from the start of ignition of the gas burner 15 and is changed after a predetermined time elapses, so that the flame upon ignition of the gas burner 15 is Inconvenience such as fluctuation does not occur. Therefore, the ignition can be reliably detected by the ignition detecting means 31 and the thermocouple 19.

As shown in FIG. 5, the purifier control means 27 allows the user to set the air volume changeover switch when the air purifier 3 is automatically operated and before a predetermined time elapses. When the automatic operation is switched to the manual operation by 23 (YES in STEP 16), the process is set to be performed by the operation in the manual operation of FIG. Similarly, as shown in FIG. 6, when the air purifier 3 is being manually operated and before a predetermined time elapses, the user operates the air volume changeover switch 23 to switch from the manual operation to the automatic operation. When the switching is performed (YES in STEP 26), the processing is set to be performed by the operation in the automatic driving of FIG.

In the above embodiment, the predetermined time is 10
Although the time is set to seconds, the setting is not limited to this, and may be appropriately changed depending on the output of the gas burner 15 and the type of fuel. Further, in the above-described embodiment, the dust collecting filter 11 is used for the air purifier 3, but the present invention is not limited to this, and a dust collecting means or the like for giving an electric charge to dust in the air to collect dust may be used. Further, not only the dust sensor 12 but also an odor sensor that senses an odor may be used as the cleaning sensor.

Further, in the above embodiment, the purifier control means 27 controls the air flow rate by changing the rotation speed of the cleaning blower 10. However, the present invention is not limited to this, and the cleaning suction port 5 and the cleaning air blower 10 are not limited thereto. The blown air amount may be controlled by other means such as changing the opening area of the air outlet 6.

[Brief description of drawings]

FIG. 1 is an explanatory cross-sectional view of a gas fan heater with an air purifier that is an example of the present invention.

FIG. 2 is an explanatory view showing an operation panel of the gas fan heater with an air cleaner shown in FIG.

FIG. 3 is a block diagram showing a circuit configuration of a gas fan heater with an air cleaner shown in FIG.

FIG. 4 is a flowchart showing the operation of the air purifier.

FIG. 5 is a flowchart showing the operation of the air purifier during automatic operation.

FIG. 6 is a flowchart showing the operation of the air purifier during manual operation.

FIG. 7 is an explanatory diagram showing the amount of dust in the air and the operating state of the air purifier during automatic operation.

FIG. 8 is an explanatory diagram showing an operating state of the air purifier during manual operation.

[Explanation of symbols]

1 ... Gas fan heater with air purifier (warm air heating device with air purifier), 3 ... Air purifier, 4 ... Gas fan heater (warm air heater), 10 ... Blower for cleaning, 11 ... Dust collection filter ( Dust collecting means), 15 ... Gas burner, 17 ... Heating blower (combustion blower), 18 ... Igniter (ignition means), 19 ... Thermocouple, 27 ... Purifier control means, 29 ... Ignition control means, 30 ... Ignition detection means.

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F24H 3/04 305

Claims (3)

(57) [Claims] 1. A warm air heating device with an air purifier, comprising an air purifier and a warm air heater installed together, wherein the air purifier is a collector for purifying air sucked from a cleaning suction port. A dust blower, a blowing blower for cleaning that blows air cleaned by the dust collecting blower into the room, and a purifier controller that controls the blown blow amount of the cleaning blower; The warm air heater should be installed close to the cleaning inlet.
A suction port for heating, a burner for heating the air sucked from the suction port for heating, a blower for combustion for supplying combustion air to the burner, and an ignition means for igniting the burner. An ignition detection means for detecting an ignition state of the burner, and an ignition control for controlling a fuel supply amount and a combustion air amount to the burner at the time of ignition of the burner so that the supply amount and the air amount are suitable for ignition, respectively. Means, wherein the purifier control means prohibits a change in the air flow rate of the cleaning air blower for a predetermined time after ignition of the burner is started. 2. The air purifier includes a cleaning sensor for detecting the amount of a component contained in the air, and the purifier control means has a larger air flow rate as the detected amount of the cleaning sensor increases. As described above, the air blowing amount of the cleaning air blowing unit is changed according to the detected amount, and the cleaning air blowing unit is changed regardless of the change in the detected amount of the cleaning sensor for a predetermined time after the ignition of the burner is started. 2. The change of the blown air volume is prohibited.
The hot air heater with an air purifier as described in. 3. The air cleaner comprises an air flow rate setting means for setting the air flow rate of the cleaning air flow means, and a display means for displaying the air flow rate set by the air flow rate setting means. The purifier control means, when there is an instruction to change the air flow rate of the cleaning air flow means by the air flow rate setting means within a predetermined time after the ignition of the burner is started,
While making the display means display according to the changed air flow rate, prohibiting the change of the air flow rate of the cleaning air flow means,
The warm air heating device with an air purifier according to claim 1, wherein after the predetermined time has elapsed, the cleaning air blower is operated with a changed air flow rate.