JP4048941B2 - Hot air heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot-air heating device that mixes indoor air and high-temperature gas and uses it for heating.
[0002]
[Prior art]
Conventionally, as shown in FIG. 4, in this type of hot air heating apparatus, fuel is supplied to the tank 1 from the cartridge tank 2, and the fuel in the tank 2 is supplied to the vaporizer 4 by the pump 3. Then, it is vaporized by the vaporizing section 4 to become fuel gas, and is ejected from the nozzle 5 in the horizontal direction. The fuel ejected from the nozzle 5 is ejected into the mixing pipe 6 provided at the downstream side of the vaporizing section 4 while sucking the primary air by the ejector effect, and mixed here, and is integrated with the mixing pipe 6. It is supplied to the burner section 7 having a shape and burned there. The generated combustion gas is guided upward by a combustion cylinder 8 disposed so as to cover the periphery of the burner section 7, and mixed with the indoor air flow from the blower 10 by a duct 9 covering the combustion cylinder 8. It is discharged as wind and used for heating. The hot air heating device performs a predetermined operation in a sequence predetermined by the controller, such as automatically adjusting the fuel supply amount by changing the driving frequency and applied voltage of the pump 3 according to the room temperature and the set temperature. So that it is controlled.
[0003]
As described above, the conventional hot air heating apparatus has been focused on improving the feeling of heating, and is somewhat inferior in efforts to improve the indoor environment.
[0004]
However, in recent years, interest in health has increased, and negative ion generation means such as composite ceramics obtained by mixing several types of ceramics at the hot air outlet have been installed to actively supply negative ions into the room. Devices have been developed (see Patent Document 1).
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-211236 [0006]
[Problems to be solved by the invention]
The warm air heating device that does not have the negative ion generation means is mainly used for indoor heating in winter, so it is used for a long time in a closed room, and the indoor temperature is set to the set temperature. Although it is preserved, it is often used in cases where air quality is not so good, and it is dusty or increases carbon dioxide, etc. In other words, VOCs such as smoking components, odors, formaldehyde, etc. contained in indoor air , Other chemicals, carbon monoxide, carbon dioxide, ozone, accumulation of microorganisms such as bacteria, molds and viruses, and negative scenes where negative ions are used in many situations It was done.
[0007]
In addition, in the conventional heating heat source using the combustion heat described above, a large amount of positive ions and negative ions are generated by the combustion flame plasma effect, but the negative ions are quickly generated by indoor dust or the like. As a result, the balance between positive ions and negative ions in the room is lost, and the ion ratio of positive ions to negative ions does not increase too much, and the room temperature is maintained at the set temperature, but the indoor environment I was worried about getting worse.
[0008]
In addition, in the case where a substance that generates negative ions is attached to the hot air outlet, if a predetermined amount of negative ions is to be secured, a material that requires a considerably large volume and generates negative ions in the entire hot air outlet Will be disposed. In this case, problems such as an increase in air path resistance at the hot air outlet and the inability to secure an appropriate air volume, or an abnormal rise in temperature inside the device may occur.
[0009]
Therefore, the present invention efficiently heats and generates a large amount of negative ions during hot air heating, thereby improving the balance between positive ions and negative ions and maintaining the indoor environment at a high quality while heating the entire room. It aims at providing the usage which improves the durability of an air blower in consideration of the use frequency of a negative ion generator, while realizing a highly comfortable heating device.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention achieves the above purpose by burning a fuel, a blower supplying an air flow, and mixing or heat-exchanging the air flow from the blower and the hot gas from the burner to discharge as hot air. The negative ion generating means is disposed at an appropriate position in the air flow path from the blower, and the rotational speed of the blower is lower during combustion when the negative ion generating means is activated. The energization control is performed so that the number of rotations is the same.
[0011]
According to the above invention, since the negative ion generating means is arranged at a proper position in the air flow path, even if it is used for a long time in a closed room, the negative ions are replenished, and the ion ratio between the positive ions and the negative ions is increased. It can be prevented from becoming too large, and the entire room can be heated while maintaining a high quality indoor environment.
[0012]
In addition, since the negative ion generating means is disposed at an appropriate position in the air flow path, the negative ions released from the negative ion generating means can reach the entire room by the hot air, and the negative ions are generated. The effect can be exhibited more effectively, and the air blowing means can also serve for generating hot air and for negative ions of the apparatus, and can be inexpensive and simplified in configuration.
[0013]
Furthermore, if the operation of the negative ion generating means is operated regardless of the combustion of the burner part, the usage of operating only the negative ion generating means at the time of non-combustion is added, and the usage time of the blower is only during the conventional heating operation. As a result, the durability becomes a problem. In particular, the period of use is limited when the burner is combusted, but the period of use is always constant when the negative ion generating means is in operation, so there is a concern that the life of the blower will be 5 to 6 times faster.
[0014]
Therefore, by controlling the energization so that the rotational speed of the blower is lower than that during combustion when the negative ion generating means is operating during non-combustion, The service life can be greatly extended.
[0015]
Generally, AC fan motors are the mainstream for blowers used in hot air heaters. The service life of this blower is mainly due to mechanical wear of the bearings, and is proportional to the total number of rotations of the blower. By making the control at a significantly low rotational speed, the life of the blower when the negative ion generating means is operated alone is greatly improved.
[0016]
In addition, when the user operates the negative ion generating means during non-combustion, the user feels the air flow from the blower as a feeling of cold air. By controlling energization so that the number of rotations becomes lower, the above-mentioned feeling of cold wind is alleviated and the feeling of use is improved.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The warm air heating device according to claim 1 is used as warm air by mixing or heat exchanging a burner unit for burning fuel, a blower for supplying an air flow, an air flow from the blower and a high-temperature gas from the burner unit. The negative ion generating means is disposed at an appropriate position in the air flow path from the blower, and when the negative ion generating means is in non-combustion, the rotational speed of the blower is set higher than that during combustion. The energization is controlled so that the number of rotations is low.
[0018]
And since negative ion generating means is arranged at the right place of the air flow path, even if it is used for a long time in a closed room, negative ions are replenished, and the ion ratio of positive ions to negative ions becomes too large. And the entire room can be heated while maintaining a high quality indoor environment.
[0019]
In addition, since the negative ion generating means is disposed at an appropriate position in the air flow path, the negative ions released from the negative ion generating means can reach the entire room by the hot air, and the negative ions are generated. The effect can be exhibited more effectively, and the air blowing means can also serve for generating hot air and for negative ions of the apparatus, and can be inexpensive and simplified in configuration.
[0020]
Furthermore, if the operation of the negative ion generating means is operated regardless of the combustion of the burner part, the usage of operating only the negative ion generating means at the time of non-combustion is added, and the usage time of the blower is only during the conventional heating operation. As a result, the durability becomes a problem. In particular, the period of use is limited when the burner is combusted, but the period of use is always constant when the negative ion generating means is in operation, so there is a concern that the life of the blower will be 5 to 6 times faster.
[0021]
Therefore, by controlling the energization so that the rotational speed of the blower is lower than that during combustion when the negative ion generating means is operating during non-combustion, The service life can be greatly extended.
[0022]
Generally, AC fan motors are the mainstream for blowers used in hot air heaters. The service life of this blower is mainly due to mechanical wear of the bearings, and is proportional to the total number of rotations of the blower. By making the control at a significantly low rotational speed, the life of the blower when the negative ion generating means is operated alone is greatly improved.
[0023]
In addition, when the user operates the negative ion generating means during non-combustion, the user feels the air flow from the blower as a feeling of cold air. By controlling energization so that the number of rotations becomes lower, the above-mentioned feeling of cold wind is alleviated and the feeling of use is improved.
[0024]
Further, in the hot air heating apparatus according to claim 2, the rotational speed of the blower when the negative ion generating means is operated during non-combustion is set to a high rotational speed for a predetermined time at the beginning of the operation, and then lower than that during combustion. The energization is controlled so as to be a number.
[0025]
And if the rotational speed of the blower is too low, there is a problem that the starting torque at the start of rotation is necessary, so that rotation does not start or the start of rotation is delayed, but it is higher than the starting torque at the start of rotation of the blower Energization control is performed so that the rotation speed of the blower when the burner part is not combusted is lower than that during combustion after the energization control amount for obtaining torque is performed for a predetermined time. Thus, it is possible to obtain a predetermined rotational speed at an early rise, and to further reduce the rotational speed of the blower when the burner portion is not combusted when the negative ion generating means is operated.
[0026]
Further, in the hot air heating apparatus according to claim 3, the energization control of the blower when the negative ion generating means is operated during non-combustion is such that the energization of the blower is intermittent energization.
[0027]
And since the energization control of the blower when the burner part is not combusted when the negative ion generating means is in operation is configured such that the energization of the blower is intermittent, the blower when the burner part is not combusting when the negative ion generating means is operated The total number of revolutions of the fan can be reduced, and the life of the blower is greatly improved.
[0028]
In addition, the configuration in which energization control is performed so that the number of revolutions is low is more susceptible to component variations and the like, but the energization control of the blower is intermittent in the energization of the blower. By controlling the non-energization time and adjusting the overall rotational speed of the blower, it becomes possible to easily and accurately control.
[0029]
In addition, the air flow generated from the blower becomes a strong nodule flow and reaches far, and the circulation flow is easy to spread throughout the room, so the uniformity of the room increases with less circulation flow and the circulation flow rate decreases. It is possible to eliminate the feeling of airflow.
[0030]
Further, the hot air heating apparatus according to claim 4 is configured such that the energization control of the blower during the operation of the negative ion generating means during non-combustion uses the deenergization control of the blower.
[0031]
Since the energization control of the blower when the negative ion generating means is in operation when the burner part is not combusted, the energization of the blower is a thinning-out control. The number of rotations can be reduced, and the life of the blower is greatly improved.
[0032]
In addition, the configuration in which the energization control is performed so as to reduce the rotation speed is more susceptible to component variations as the lowering range is increased. However, since the energization control of the fan is the decimation control of the fan, It becomes possible to easily and accurately control the rotation speed of the blower according to the amount.
[0033]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0034]
Example 1
FIG. 1 is a cross-sectional view of a main part of a hot air heater according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the hot air heater, and FIG. 3 is a control block diagram of the hot air heater.
[0035]
In FIGS. 1 and 2, reference numeral 11 denotes a case, in which a tank 12 holding liquid fuel is disposed at a lower side portion thereof, and a detachable cartridge tank 13 is disposed above the tank 12. A pump 14 is attached to the upper surface of the tank 12 and supplies fuel to the burner portion 16 from the upper end of the pump 12 through an oil feed pipe 15. The burner portion 16 is covered with a cylindrical combustion cylinder 17 having an opening at the entire upper surface thereof so as to guide the generated combustion gas upward, and the back of the combustion cylinder 17 has room air. A blower 18 for taking in and sending the flow is provided, and a part of the air flow from the blower is taken into the combustion cylinder and used as combustion air.
[0036]
Reference numeral 19 denotes a duct that mixes the high-temperature combustion exhaust gas from the combustion cylinder 17 and the indoor air flow from the blower 18 to form an air blowing path that is used as hot air on the downstream side. It discharges | emits through the warm air blower outlet 21 which has the louver 20 which controls a direction.
[0037]
Reference numeral 22 denotes negative ion generating means provided at the hot air outlet 23. A shield 23 is provided on the upstream side of the air flow flowing around the negative ion generating means 22 so that negative ions generated from the negative ion generating means 22 are generated. The air flow from the blower that flows around the negative ion generation means 22 is diffused, and the air flow from the blower 18 is not in direct contact with the negative ion generation means 22.
[0038]
A control unit 24 controls the pump 14 and the blower motor 19 to burn the burner unit 16. The pump 14, the burner unit 16, the negative ion generation unit 22, and the like based on an operation condition signal input from the operation unit. Are controlled in a predetermined sequence.
[0039]
Further, the operation of the negative ion generating means 22 can be operated independently, and can be operated by the user regardless of whether the burner portion 16 is combusted or not combusted. For the operation of the ion generating means 22, the control unit 24 controls the rotational speed of the blower 18 to be lower than that at the time of combustion.
[0040]
In the above configuration, the liquid fuel supplied from the cartridge tank 13 to the tank 12 so as to keep a constant oil level is sucked up from the tank 12 by the pump 14, sent to the burner unit 16 through the oil feed pipe 15 and burned. The generated high-temperature combustion exhaust gas flows upward of the combustion cylinder 17, is mixed with the indoor air flow from the blower 18 in the duct 19, and controls the blowing direction from the warm air outlet 21 through the louver 20 as hot air. It is discharged and used for heating.
[0041]
The control unit 24 allows the user to select the operation of the negative ion generation means 22, and the blower 18 burns the burner unit 16 during the operation of the negative ion generation unit 22 during the combustion of the burner unit 16. The number of revolutions according to the conditions is controlled so as to be lower than the number of revolutions at the time of combustion when the negative ion generation means 22 is operated at the time of non-combustion, and the negative ions generated from the negative ion generation means 22 are controlled. Since the shield 23 is provided, the air flow from the blower 18 is not in direct contact with the negative ion generation means 22 but diffuses by the air flow from the blower 18 flowing around the negative ion generation means 22. It becomes like this.
[0042]
That is, the control unit 24 performs the energization control amount for obtaining a torque higher than the starting torque for a predetermined time at the start of rotation of the blower 18 when the negative ion generating means 22 is operated, and then the blower when the burner unit 16 is not combusted. The energization control of the blower 18 performs decimation control of the energization of the blower 18 so that the energization control of 18 is lower than that at the time of combustion, and the energization is intermittent, and the rotation speed is lower than the rotation speed at the time of combustion. .
[0043]
Here, in a room where the balance between positive ions and negative ions in the room is lost and the ion ratio of positive ions to negative ions is likely to be large, the heating ion source using combustion heat is provided with the negative ion generating means 22 at the warm air outlet 21. Even if the negative ions are replenished and used for a long time in a closed room, the ion ratio of positive ions to negative ions can be prevented from becoming too large, while maintaining a high quality indoor environment. The whole can be heated.
[0044]
Further, a shield 23 is disposed on the upstream side of the air flow of the negative ion generating means 22 so that the negative ions generated from the negative ion generating means 22 are diffused by the air flow from the blower 18 flowing around the negative ion generating means 22. Thus, the air flow from the blower 18 can be prevented from coming into direct contact with the negative ion generation means 22, and foreign matter such as dust mixed in the air flow from the blower 18 is negative ion generation means 22. It is possible to prevent the generation of negative ions and prevent the generation of ignition / smoke from dust, and stable generation of negative ions over time can be obtained. High equipment can be obtained.
[0045]
And since the surface of the air flow path around and downstream of the negative ion generation means 22 is formed of a coated steel plate having electrical insulation, it can be discharged from the device without reducing the amount of negative ions. Higher heat resistance can be obtained than the structure covered with an electrical insulator such as a resin material, and there are no problems such as deformation or ignition / smoke of the resin material part, and the structure can be simplified and inexpensively. .
[0046]
Further, since the negative ion generating means 22 is disposed at a proper position in the air flow path, the negative ions released from the negative ion generating means 22 can reach the entire room by the hot air, and the negative ions are generated. The effect of ions can be exhibited more effectively, and the air blowing means can also serve both for generating hot air and for negative ions of the device, and can be inexpensive and simplified in configuration.
[0047]
Here, if the operation of the negative ion generating means 22 is performed regardless of the combustion of the burner section 16, the blower 18 is rotated during the combustion of the burner section 16 and when the negative ion generating means 22 is operated. The life of the blower 18 comes early, and in particular, the use period is limited when the burner section 16 is combusted. However, the use period is always constant when the negative ion generating means 22 is operated, so the life of the blower 18 is fast. The problem which becomes becomes.
[0048]
In other words, if it is used 10 hours a day for 5 months a year, the annual heating usage time is 1500 hours. In addition, the operation of the negative ion generating means 22 alone is the remaining 7 months throughout the year. If it is used for 10 hours a day, it will be 2100 hours, and it will be 3600 hours in total, and the time of the fan 18 normally used will be 2.4 times, and the lifetime will be shortened by that, and the negative ion generation means 22 A single operation may be used more than 10 hours per day, and there is a concern that the life of the blower 18 may be shortened.
[0049]
However, the control unit 24 performs the energization control amount for obtaining a torque higher than the starting torque at the start of the rotation of the blower 18 when the negative ion generating means 22 is operated, and then the blower when the burner unit 16 is not combusted. The energization control of the blower 18 controls the decimation of the energization of the blower 18 and the energization is intermittently combined so that the energization control of the engine 18 has a lower rotational speed than that at the time of combustion. The energization control of the blower 18 at the time can make the rotational speed significantly lower than that at the time of combustion.
[0050]
For example, the control unit 24, when starting the rotation of the blower 18 during the operation of the negative ion generating means 22, for a short time (the time when the rotation is not so high and the rotation is ensured, for example, 200 ms, for example, 200 ms). ), The energization control of the blower 18 is thinned out (for example, the control for thinning out to 1/2, on: 2 ms, off: the rotation speed is halved at 2 ms), and further the energization time of the thinning control Is intermittent (for example, control that reduces energization control to 1/2, on: 2 seconds, off: the total rotation speed is halved in 2 seconds), and blows air that fluctuates strongly at a low rotation speed Thus, the rotational speed (for example, the total rotational speed of ¼ per minute) is significantly reduced, and the life of the blower 18 is greatly improved.
[0051]
In general, the life of the blower 18 in an AC type scraping motor or the like used in a hot air heater is mainly due to mechanical wear of a bearing portion, and is proportional to the total number of rotations of the blower 18. By setting the rotational speed to be significantly low (for example, 1/4 rotational speed), the total rotational speed of the blower 18 when the negative ion generating means 22 operates alone can be reduced. Even if it operates independently, the service life of the blower 18 is greatly improved (for example, the time of the normally used blower 18 can be equivalent to 1.35 times).
[0052]
In addition, the configuration in which the energization control is performed so that the rotation speed is low is more easily affected by component variations as the lowering range is increased. However, the energization control of the blower 18 is the thinning control of the energization of the blower 18 and its Since energization is combined intermittently, the amount of thinning, the energization time, and the non-energization time are controlled so that the total number of revolutions of the blower 18 can be adjusted to enable easy and accurate control.
[0053]
Further, since the energization control of the blower 18 incorporates intermittent control, the air flow generated from the blower 18 becomes a strong nodule flow and reaches far, and the circulation flow easily spreads over the entire room, so that the circulation flow is small. Thus, the uniformity of the room is increased, the circulation flow rate can be reduced, and the feeling of airflow can be further eliminated.
[0054]
Further, the user feels the air flow from the blower 18 when the burner unit 16 is not combusted when the blower 18 negative ion generating means 22 is operated as a feeling of cold wind, but the blower 18 is lower than that at the time of combustion. Since it is set as the structure which controls electricity supply so that it may become rotation speed, the above-mentioned feeling of cold wind is also relieved and a usability | use_condition improves.
[0055]
In the above-described embodiment, the energization control amount at which a higher torque than the starting torque is obtained at the start of rotation of the blower 18 by the energization control of the blower 18 when the burner unit 16 is not combusted when the negative ion generating means 22 is operated for a predetermined time. After the operation, the energization control is performed so that the rotational speed of the blower 18 when the burner unit 16 is not combusted is lower than the combustion speed, the configuration in which the energization of the blower 18 is thinned out, and the energization of the blower 18. Although the configuration of intermittently has been described at the same time, this may be individual, and the configuration of each other part may be any configuration as long as the object of the present invention is achieved.
[0056]
【The invention's effect】
As described above, according to the present invention, since the negative ion generating means is disposed at a proper position in the air flow path, even if the negative ion is used for a long time in the closed room, the negative ions are replenished, and the positive ions and the negative ions are added. The ion ratio can be prevented from becoming too large, and the entire room can be heated while maintaining a high quality indoor environment.
[0057]
In addition, since the negative ion generating means is disposed at an appropriate position in the air flow path, the negative ions released from the negative ion generating means can reach the entire room by the hot air, and the negative ions are generated. The effect can be exhibited more effectively, and the air blowing means can also serve for generating hot air and for negative ions of the apparatus, and can be inexpensive and simplified in configuration.
[0058]
Furthermore, if the operation of the negative ion generating means is operated regardless of the combustion of the burner part, the usage of operating only the negative ion generating means at the time of non-combustion is added, and the usage time of the blower is only during the conventional heating operation. As a result, the durability becomes a problem. In particular, the period of use is limited when the burner is combusted, but the period of use is always constant when the negative ion generating means is in operation, so there is a concern that the life of the blower will be 5 to 6 times faster.
[0059]
Therefore, by controlling the energization so that the rotational speed of the blower is lower than that during combustion when the negative ion generating means is operating during non-combustion, The service life can be greatly extended.
[0060]
Generally, AC fan motors are the mainstream for blowers used in hot air heaters. The service life of this blower is mainly due to mechanical wear of the bearings, and is proportional to the total number of rotations of the blower. By making the control at a significantly low rotational speed, the life of the blower when the negative ion generating means is operated alone is greatly improved.
[0061]
In addition, when the user operates the negative ion generating means during non-combustion, the user feels the air flow from the blower as a feeling of cold air. By controlling energization so that the number of rotations becomes lower, the above-mentioned feeling of cold wind is alleviated and the feeling of use is improved.
[Brief description of the drawings]
1 is a cross-sectional view of a main part of a hot air heating apparatus according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the hot air heating apparatus. FIG. 3 is a control block diagram of the hot air heating apparatus. Sectional view of the hot air heater in Japan [Explanation of symbols]
11 Burner part 18 Blower 19 Duct (air flow path)
21 Hot air outlet 22 Negative ion generating means 24 Control unit

Claims (4)

A blower section that burns fuel; a blower that supplies an air flow; and a hot air outlet that mixes or heat-exchanges the air flow from the blower and the high-temperature gas from the burner section and discharges it as warm air. The negative ion generating means is disposed at an appropriate position in the air flow path from the air passage, and the energization control is performed so that the rotational speed of the blower is lower than that at the time of combustion when the negative ion generating means is operated during non-combustion. A warm air heating device. 2. The energization control is performed so that the rotational speed of the blower during operation of the negative ion generating means during non-combustion is set to a high rotational speed for a predetermined time at the beginning of the operation, and then lower than that during combustion. The hot air heating apparatus as described. The hot air heating apparatus according to claim 1, wherein the energization control of the blower during operation of the negative ion generating means during non-combustion is such that the energization of the blower is intermittent. The hot air heating apparatus according to claim 1, wherein the energization control of the blower when the negative ion generating means is activated during non-combustion is a thinning control of energization of the blower.

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