KR950009121B1 - Heating apparatus - Google Patents

Abstract

The heater comprises a heating means(2) for heating an air, a temp. setting means(3) for setting the temp. of a room air heated by the heating means, a temp. sensing means(4) for sensing the temp. of the room air, and a control device(5). The control device(5) includes a heating setting means(6) for setting an appropriate air heating amount of the heating means(2) in response to a temp. difference between the set temp. and the sensed temp., a fast heating means(7) for performing a fast heating when the temp. difference is high at the beginning operation of the heater, and a correction means(8) for adding a correcting heating amount to an appropriate heating amount set by the heating setting means(6) when a fast heating operation by the fast heating means(7) is replaced with the controlling operation of the heating setting means(3).

Description

Heating

1 is a block diagram showing an outline of the present invention.

2 to 10 show an embodiment of the present invention, Figure 2 is a schematic cross-sectional view of the FF gas hot air heating apparatus.

3, 4, 5, 6 and 8 are flowcharts showing an example of combustion control programmed into the control device.

7 is a pattern showing the relationship between the temperature difference and the fundamental speed.

9 and 10 are time charts for explaining the operation.

* Explanation of symbols for main parts of the drawings

1: heating device 2: heating means

3: temperature setting means 4: temperature detecting means

5: control device 6: heating setting means

7: rapid heating means 8: correction means

The present invention relates to a heating apparatus for heating indoor air, and more particularly, to a heating apparatus for heating control of heating means at the start of operation.

As a conventional heating apparatus, when the temperature difference obtained by subtracting the temperature of indoor air from the set temperature at the beginning of operation is large, a technique of performing rapid heating to increase the heating amount of air by the heating means is known.

In addition, rapid heating stops when the temperature difference becomes smaller than the predetermined temperature or when rapid heating is performed for a predetermined time. The heating amount of air by the heating means is set based on the temperature difference.

As indicated above, if the temperature difference is large at the beginning of operation, the temperature of the indoor air quickly approaches the set temperature by rapid heating. However, even in the state where the temperature of indoor air approaches the set temperature by rapid heating, the temperature of the interior walls and furniture is still low.

For this reason, even if the temperature of indoor air approaches the set temperature by rapid heating, a person in the room such as a user loses heat due to a wall or a furniture, and the bodily temperature decreases, resulting in a cold feeling.

An object of the present invention is to provide a heating apparatus which does not cause a person to feel cold even when a wall or furniture is cold.

In order to achieve the above object, the heating apparatus of the present invention shows the configuration of FIG. 1 and adopts the following technical means.

The heating apparatus 1 includes heating means for heating air, temperature setting means for setting the temperature of indoor air heated by the heating means, temperature detecting means for detecting the temperature of the indoor air, and the heating means. It is provided with a control device for setting the heating amount of the air by the speed.

The controller obtains a basic speed for setting the heating amount of the heating means based on the temperature difference between the set temperature set by the temperature setting means and the detected temperature detected by the temperature detecting means, and the temperature difference is greater than a predetermined value. A heating setting means for obtaining a correction speed for increasing the heating amount of the heating means in a large case, and for setting the heating amount of the heating means according to the basic speed and the correction speed; In a larger case, when the rapid heating means performs rapid heating by the speed at which the heating amount of air by the heating means is maximum, and the rapid heating is stopped by the rapid heating means and replaced by the control by the heating setting means. A correction rate for applying a correction speed for increasing the heating amount of the heating means to the speed set by the heating setting means. It includes a stage.

In the state where the rapid heating is completed, the temperature of the indoor air approaches the set temperature. However, in the state where rapid heating is finished, the walls of the room and the furniture arranged in the room are still cold. For this reason, when a conventional heating apparatus is used, the heat of a person in the room is taken away by a cold wall or furniture, and thus the bodily sensation temperature of the person in the room decreases and feels cold.

However, in the present invention, after the end of the rapid heating, the room air is excessively heated by the correction means. That is, in the state where rapid heating is completed, the temperature of the indoor air is higher than the state in which normal heating control (heating control by the heat setting means) is performed.

As a result, even after the end of rapid heating, the heating apparatus of the present invention is prevented from lowering the bodily sensation temperature of the indoor person even when the wall or the furniture is cold, so that the indoor person does not feel cold.

In addition, rapid heating is not performed when the heating device is started in a relatively warm state such as when restarting. For this reason, the correction means also does not operate, and normal heating control is performed by the heat setting means.

Next, the heating apparatus of the present invention will be described based on the embodiment shown in the drawings.

2 to 10 show an embodiment of the present invention, and FIG. 2 shows a schematic cross-sectional view of an FF type (forced exhaust type) gas hot air heating apparatus.

The gas hot air heater 10 includes a heating main body 11, a gas supply passage 12, and a control device 13, which will be described next in turn.

[A] Description of the heating main body 11]

The heating main body 11 is a structure in which the combustor 15 is arrange | positioned in the indoor air path 14 through which indoor air circulates.

The indoor air passage 14 includes an air inlet 16 for sucking indoor air, a hot air outlet 17 for ejecting air that has passed through the indoor air passage 14 toward the room, and an air inlet 16. The convection fan 18 which draws air and at the same time generate | occur | produces the air which flows into the room from the hot air blower outlet 17 is comprised.

The combustor 15 has an outdoor air passage 19 which introduces outdoor air and releases it again to the outside. A burner plate 20 made of ceramic is provided inside the outdoor air passage 19 disposed in the indoor air passage 14. The burner plate 20 transfers the outdoor air for combustion by the combustion fan 21, and the gas of the fuel is transferred by the gas supply passage 12. On the surface of the burner plate 20, the supplied gas is combusted with outdoor air. The outdoor air passage 19 for guiding the combustion gas generated by the combustion to the outside is provided as a heat exchanger 22 for exchanging internal combustion gas and air flowing in the indoor air passage 14.

In addition, the heat exchanger 22 is a heating means of the present invention that is blown into the room to heat the air.

[B) Description of gas supply passage 12]

The gas supply passage 12 is a passage for gas that supplies gas supplied from a gas supply source (not shown) into the outdoor air passage 19 upstream of the burner plate 20. The gas supply passage 12 includes an original solenoid valve 23 and a kettle valve 24 for intermittent gas from an upstream side, a governor valve 25 for supplying gas at a constant pressure, and an energized current value. Accordingly, a proportional valve 26 for adjusting the gas passage amount (supply amount) is provided. At the downstream end of the gas supply passage 12, a nozzle 27 for blowing gas into the outdoor air passage 19 is provided.

In addition, the upstream and downstream of the proportional valve 26 are connected to the bypass pipe 28. The bypass pipe 28 is provided with an orifice 29 through which gas of a constant flow rate passes.

[C) Description of control device 13]

The control device 13 is provided with a microcomputer, and the convection fan 18, the combustion fan 21, the solenoid valve 23, the kettle valve 24, the proportional valve 26 and the burner plate 20 are described above. Power supply control is performed in accordance with the procedure programmed in the microcomputer for the speaker 30 installed in the vicinity of the?

In addition, the control device 13 is an input means, the operation switch 31 for operating the start and stop of the gas hot air heating device 10 by the user, and the temperature setting means 32 for setting the room temperature desired by the user. (E.g., variable resistance), a temperature detecting means 33 (e.g., thermistor) provided at the air inlet 16 and detecting the temperature of indoor air, and a burner plate 20, The thermocouple 34 which detects a temperature is provided.

In addition, the control apparatus 13 is provided with air circuits, such as a power supply circuit and a safety circuit.

[D) Description of combustion control]

Next, an example of the combustion control programmed in the microcomputer of the control device 13 will be described with reference to FIGS.

As mentioned above, the heating means of this embodiment is a heat exchanger 22. The amount of air heated by the heat exchanger 22 (heating means) is the amount of combustion of the gas in the burner plate 20, that is, the degree of opening of the proportional valve 26, in other words, the energized current value of the proportional valve 26. Controlled by

In the present embodiment, the current carrying value of the proportional valve 26 is the eighth switching of the first to eighth speeds, and the first current has the smallest current carrying value. . In addition, the eighth speed is only used for rapid heating or forced steel combustion for stabilizing combustion, details will be described later.

An example of the combustion control will be described using the flowchart of FIG.

When the power plug of the gas hot air heater 10 is inserted into the outlet (start), it is judged whether or not the operation switch 31 is turned on (step S1). When the determination result of this step S1 is NO, it returns to the step S1. If the determination result of the step S1 is YES, a series of ignition controls are performed (step S2). Subsequently, forced steel burning is performed for 60 seconds (step S3).

Next, a temperature difference obtained by subtracting the temperature of the indoor air detected by the temperature detecting means 33 (hereinafter, the detected temperature) from the room temperature set by the temperature setting means 32 (hereinafter, the set temperature) is the first predetermined temperature (for example, It is judged whether it is larger than 2.33 degreeC) (step S4). When the determination result of the step S4 is YES, rapid heating operation is performed by the rapid heating means of the present invention (step S5).

After completion of the rapid heating operation or when the determination result of the step S4 is NO, the heating and heating operation is performed by the heating setting means of the present invention (step S6).

Then, a determination is made as to whether the operation switch 32 is turned off (step S7). If the determination result of the step S7 is NO, the process returns to the step S6, and if the determination result of the step S7 is YES, stop control of the gas hot air heater 10 is performed (step S8), The process then returns to step S1.

[E) Explanation of Forced Steelworks]

Next, the forced combustion chamber will be described using the flowchart of FIG.

The forced combustion furnace first determines whether the temperature difference obtained by subtracting the detection temperature from the set temperature is larger than the second predetermined temperature (for example, 2.33 ° C equal to the first predetermined temperature) (step S9). When the determination result of the step S9 is YES, the proportional valve 26 is energized at 7 speeds for 10 seconds (step S10), and the proportional valve 26 is energized at 8 speeds for 50 seconds (step S11). .

When the determination result of the step S9 is NO, the proportional valve 26 is energized at 7 speeds for 60 seconds (step S12).

[F) Explanation of Rapid Heating Operation]

Next, the rapid heating operation by the rapid heating means will be described using the flowchart of FIG.

In the rapid heating operation, the combustion speed is first set to eight speeds (step S13). Next, a judgment is made as to whether or not the temperature difference obtained by subtracting the detection temperature from the set temperature is larger than the third predetermined temperature (for example, 1.67 ° C) (step S14). If the determination result of the step S14 is YES, it is judged whether 15 minutes have elapsed since the operation switch 31 is turned on (step S15). If the determination result of the step S15 is NO, the flow returns to step S14.

When the determination result of the step S15 is YES or when the determination result of the step S14 is NO, it means that the control is switched from the control by the rapid heating means to the control by the heating setting means. At this time, the correction speed is set to 1 speed in order to apply the correction heating amount to the appropriate heating amount set in the step S6 by the correction means (step S16).

[G) Explanation of heating and heating operation]

Next, the heating and heating operation by the heating setting means will be described using the flowchart of FIG. In the heating setting means of the present embodiment, the temperature difference obtained by subtracting the detection temperature from the set temperature is within a predetermined time (e.g., 10 minutes) except for the fourth predetermined temperature (e.g., ± 0.333 deg. In the case of continuous over, 1 speed is added to the basic speed as the correction speed. Alternatively, correction control for subtracting one speed as the correction speed is applied.

First, the basic speed which is appropriate heating amount is determined (step S17). The basic speed of the present embodiment is determined by the temperature difference obtained by subtracting the detection temperature from the set temperature. An example of the relationship between the temperature difference and the basic speed is shown in FIG.

Subsequently, the speed of the sum of the basic speed and the correction speed is determined (step S18). When the sum of speeds is zero or less, the combustion speed is set to 1 speed (step S19). Moreover, when the speed of sum is eight or more, the combustion speed is set to seven speeds (step S20). In addition, when the sum of speeds is 1 or more and 7 or less, the combustion speed is the speed plus the basic speed and the correction speed (step S21).

Next, a determination is made as to whether the basic speed is four speeds (step S22). When the determination result of the step S22 is NO, it is judged whether or not the 10 minute timer which counts a predetermined time (for example, 10 minutes) is in operation (step S23). If the determination result of the step S23 is NO, the 10 minute timer is operated (step S24). Next, it is determined whether 10 minutes have elapsed since the 10-minute timer started to operate (step S25). When the determination result of this step S25 is NO, it progresses to step S7. If the determination result of the step S25 is YES, correction speed change control is performed (step S26).

If the determination result of the step S22 is YES, the operation of the 10 minute timer is stopped (step S27), and the processing advances to the step S7.

[H) Explanation of correction speed change control]

Next, the correction speed change control performed during the heating and heating operation will be described using the flowchart of FIG.

First, a determination is made as to whether the basic speed is 5 or more (step S28). If this determination result is YES, it is determined whether the correction speed is three speeds or more (step S29). When the determination result of this step S29 is NO, it is set as the correction speed which added 1 speed to the correction speed so far (step S30). If the determination result of the step S29 is YES, the correction speed is set to 3 speeds (step S31).

When the determination result of the step S28 is NO, it is judged whether or not the correction speed is -2 speeds or less (step S32). When the determination result of this step S32 is NO, it is set as the correction speed | rate reduced by 1 speed from the correction speed up to now (step S33). If the determination result of the step S32 is YES, the correction speed is set to -3 speed (step S34).

Subsequently, the basic speed is judged (step S35).

If the basic decimal point is 1 speed, the range of correction speed is set to -1 to 0 speed (step S36). If the basic speed is 2 speeds, the range of the correction speed is -2 to +3 speeds (step S37). If the basic speed is 6 speeds, the range of the correction speed is -3 to +2 speeds (step S38). If the basic speed is 7 speeds, the range of correction speeds is set to 0 to +1 speed (step S39).

Next, the operation of the embodiment according to the present invention will be briefly described using FIG. In addition, the solid line A in a figure shows the temperature difference which subtracted the detection temperature from the set temperature, and the solid line B shows the combustion speed. Moreover, the broken line C shows the combustion speed in the state which does not apply this invention. In addition, in order to make the description clear, the control of correction | amendment of a heating setting means is made into the state which does not operate.

When the operation switch 31 is turned on, if the temperature difference obtained by subtracting the detection temperature from the set temperature is larger than the first predetermined temperature (2.33 ° C), the combustion speed becomes 8 speeds and rapid heating is performed. When the temperature in the room increases due to rapid heating and the temperature difference becomes smaller than the third set temperature (1.67 ° C.), the combustion speed is conventionally 6 speeds as the basic speed, but according to the correction means of the present invention, the correction speed is The combustion speed is applied to 1 speed to 7 speeds. That is, the indoor air is heated excessively by the excessive combustion. Similarly, when the temperature of indoor air rises and the temperature difference becomes smaller than 1 ° C, the combustion speed is conventionally 5 speeds of the basic speed, but the combustion speed is 6 speeds by the correction means of the present invention, and the indoor air is heated excessively. In addition, when the temperature of indoor air rises and the temperature difference becomes smaller than 0.333 ° C, the combustion speed is conventionally four speeds of the basic speed, but the combustion speed is five speeds by the correction means of the present invention, and the indoor air is still heated excessively. do.

Since the room is cold when rapid heating is performed, even if the temperature of the indoor air increases due to rapid heating, the walls and furniture of the room are still cold in the state where the rapid heating is completed. And cold walls or furniture deprive people of body temperature. However, the gas hot air heater 10 of the present embodiment excessively heats the room air even after rapid heating ends.

As a result, the gas-heated air heater 10 prevents a decrease in the bodily sensation temperature of the indoor person even after the rapid heating is finished, even if the wall or the furniture is cold, so that the indoor person does not feel cold.

Next, the operation of the correction control applied to the heating setting means of this embodiment will be briefly described with reference to FIG. In addition, the solid line D in a figure shows the temperature difference which subtracted the detection temperature from the set temperature, and the solid line E shows the combustion speed. In addition, the broken line F shows the combustion speed in the state without correction control applied. In addition, in order to make an explanation easy to understand, it is assumed that a correction speed | rate is 0 state at first.

When 10 minutes has elapsed in the state where the basic speed is 7 speeds and the correction speed is 0 speeds, the correction speed becomes 1 speed by the correction control, and the sum of the basic speed and the correction speed becomes 8 speeds. However, since the combustion speed is a maximum of seven speeds in the heating and heating operation, the combustion speed is seven speeds. At time t ₁ , the basic speed becomes six speeds, but the combustion speed becomes seven speeds by adding one speed of the correction speed. That is, 7 combustion speeds are maintained. After 20 minutes, one speed is added to the correction speed by the correction control, and the correction speed becomes two speeds. In other words, the sum of the basic speed and the correction speed becomes eighth speed again. At time t ₂ , the basic speed becomes 5 speeds, but the combustion speed becomes 7 speeds by adding 2 speeds of the correction speed. That is, 7 combustion speeds are maintained. At the time t ₃ before 30 minutes have elapsed, the basic speed becomes four speeds. The combustion speed is 6 speeds by adding 2 speeds of the correction speed. That is, at time t ₃ , the combustion speed is shifted to six speeds.

The correction control applied to the heating setting means increases the heating amount of air by the correction control even when used in a condition where the room temperature is hard to rise, such as when the heating load is large. It is possible to shorten the time for heating the room to make people feel cold.

Similarly, even if the temperature of indoor air rises excessively and it is difficult to cool, the amount of overheating of the air is reduced by the correction control, so that the indoor temperature is lowered quickly compared to the one without the correction control, thereby making the user feel uncomfortable due to the heat of the room. You can shorten the time to do it.

In the present embodiment, an example is shown in which rapid heating operation is performed when the temperature difference between the set temperature and the detected temperature is large at startup. However, at the time of startup, even if the temperature difference is small, a predetermined time (eg 15 minutes) has elapsed from the startup. The set temperature may be changed so that rapid heating operation may be performed even when the temperature difference is turned on.

Moreover, you may apply to the fan precedent warm air heating apparatus which controls a combustion fan according to a combustion amount. Although the amount of correction heating is set to a constant value (1 speed), for example, the heating value may be changed depending on the rate of temperature rise at room temperature.

Although a heat exchanger is shown as an example of a heating means, for example, an electric heater, a hot water heater, or an oil heater that generates heat by applying electricity to the combustion unit as a heating means, such as a gas fan heater into which combustion gas is introduced into a room. You may apply heat generating parts, such as a heating means. Of course, you may apply this invention to the heating apparatus which burns fuel, such as kerosene.

Claims (1)

(a) heating means for heating the air, (b) temperature setting means for setting the temperature of the indoor air heated by the heating means, (c) temperature detecting means for detecting the temperature of the indoor air, ( d) (d-1) a basic speed for setting the heating amount of the heating means is obtained based on the temperature difference between the set temperature set by the temperature setting means and the detected temperature detected by the temperature detecting means, and the temperature difference Is a heating setting means for obtaining a correction speed for increasing the heating amount of the heating means when the value is larger than a predetermined value, and setting the heating amount of the heating means based on the basic speed and the correction speed, (d-2) When the temperature difference is larger than the set temperature at the beginning of operation, the rapid heating means for rapid heating at the speed of heating the maximum amount of air by the heating means, and (d-3) by the rapid heating means. And a control device having correction means for applying a correction speed for increasing the heating amount of the heating means to the speed set by the heating setting means when the fast heating stops and is replaced by the control by the heating setting means. Heating.

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