JP2001004223A - Heating equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a comfortable sense of heating by providing a radiant heat radiating portion used also as a warm air diffusing portion. SOLUTION: The heating equipment sets a temperature by operating an operating unit 3, drives a fuel pressure feeding electromagnetic pump by a large output by a controller 16 based on a temperature difference between a temperature in a room detected by a room temperature thermistor 28 and the set temperature until the room temperature arrives at the set temperature to increase a fuel to be fed to a burner 7 thereby strengthening a thermal power of a combustion flame, supplies a warm air with high energy from an air outlet 4 by rapidly rotating a fan motor 10 to rapidly raise the room temperature. After the room temperature arrives at the set temperature, outputs of driving the pump and the motor 10 are lowered by the controller 16, and a radiant heat having a relatively small heating amount is slowly radiated forward. Then, since the heat is radiated into the room through a radiation protective plate 12 having many pores, a discomfort sense with the hot air is eliminated to crease a comfortable warm collecting environment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device such as an oil fan heater.

[0002]

2. Description of the Related Art Conventionally, petroleum fan heaters have been widely used in ordinary households as heating equipment in winter. FIG. 9 is a schematic partial cross-sectional front view of an example of a conventional oil fan heater, and FIG. 10 is a side cross-sectional view thereof. As shown in FIG. 9, on the side of the oil fan heater main body 101,
A fuel tank 102 for injecting and storing a liquid fuel 104 such as kerosene in advance is provided, and a sufficient amount of the liquid fuel 104 is supplied to a fuel tank 103 connected below the fuel tank 102. Is done. The fuel tank 103
The liquid fuel 104 accommodated in the inside is guided to a carburetor 107 via an oil supply pipe 106 by driving of a fuel pressure feeding electromagnetic pump 105. The vaporizer 107 is heated by energizing a vaporizer heater (not shown), and vaporizes the sent liquid fuel 104. Reference numeral 109 denotes a combustion chamber, on the bottom of which a burner 108 is supported and fixed.

[0003] The fuel gas vaporized by the vaporizer 107 is vigorously injected from a nozzle and introduced into the burner 108 together with combustion air. The fuel gas uniformly mixed with the air inside the burner 108 burns at the flame opening 108a, and the air in the combustion chamber 109 is heated by the obtained radiant heat. Then, as shown by the arrow in FIG.
A blower fan 11 provided on the back and rotatably fixed to a rotation shaft of a fan motor 110 composed of a single-phase induction motor or the like.
In step 1, the air in the room sucked through the filter 112 is mixed with the heated air or combustion gas in the heating chamber 109 and sent out from the outlet 113 as warm air into the room.

[0004] The operation of the oil fan heater having the above configuration will be described. When the combustion of the fuel gas is started in the burner 108, a flame current of the combustion flame is detected by a frame sensor 114 provided slightly above the flame opening 108a. Then, when a flame current equal to or greater than a preset value is detected, the fan motor 110 is energized, and after about 1.5 minutes, the fan motor 110 starts driving, and the fan 1
11 rotates and sends the air sucked from the room into the room through the outlet 113 as warm air. At this time, the room temperature is detected by the room temperature thermistor 115, and a control device (not shown) controls the driving of the electromagnetic pump 105 based on the temperature difference between the room temperature and the set temperature. The heating power of the combustion flame in the burner 108 is adjusted by changing the amount of gas introduced into the burner 108. Therefore, when the operation of the oil fan heater is started, the room temperature rapidly reaches the set temperature,
Thereafter, the temperature is kept constant near the set temperature.

[0005]

However, in such a conventional oil fan heater, only warm air is blown out from the outlet, and when a part of the body such as a hand or a foot is cold, the oil fan heater is not used. There is a problem of lacking a feeling of heating due to radiant heat. In order to eliminate such inconvenience, there is also a heating device provided with a radiating portion that emits radiant heat separately from the outlet that blows out hot air, but since the hot air blowing portion and the radiant heat radiating portion are located separately, There has been no heating device that can simultaneously obtain a feeling of heating by radiant heat radiation and a feeling of heating by warm air. In addition, in the conventional oil fan heater, since hot air is constantly blown out at a considerable wind speed, when the hot air directly hits the human body, many people, especially elderly people, are uncomfortable, and the oil fan heater During operation, noise due to the driving noise of the fan motor, the rotation noise of the blower fan, the blowing sound of warm air, etc. leaked into the room and was very annoying.

Therefore, an object of the present invention is to provide a heating device that can provide a comfortable feeling of heating by providing a radiant heat radiating portion that also serves as a hot air blowing portion. In addition, the present invention does not delay the rising time of the room temperature immediately after the operation, and gradually radiates the radiant heat after the room temperature reaches the set value, so that low noise without discomfort due to the hot air blown out is achieved. The purpose is to provide a simple heating device.

[0007]

In order to achieve the above object, according to the present invention, there is provided a heating means for radiating radiant heat, and heating of air taken in from the outside through the heating means to thereby supply warm air from an outlet. In a heating apparatus having a blowing means for blowing air to the outside, a radiation protection plate having a large number of small holes is provided at a portion of an outlet corresponding to the heating means. The radiation protection plate may be disposed over the entire surface of the outlet, or may be disposed at a part of the outlet. According to this, warm air is blown from the outlet, and radiant heat is radiated forward through the radiation protection plate having relatively large ventilation resistance. In the case where the radiation protection plate is provided in a part of the outlet, if the opening is located below the outlet, the warm air is mainly blown from this lower opening, while the radiant heat passes through the upper radiation protection plate. By radiating heat, the feet are heated with warm air, and the fingers are held over the radiant heat, so that particularly cool parts of the body can be efficiently heated with a focus.

In addition, a control device is provided which energizes the heat generating means so as to adjust the amount of heat generated by the radiant heat and energizes the air blowing means so as to adjust the amount of hot air blown based on the amount of heat generated. . According to this configuration, when the calorific value of the radiant heat is large, hot air heating is mainly performed, and when the calorific value is controlled to be small, the heating mode is mainly radiant heating.

Further, a temperature sensor for detecting an external temperature, and after the external temperature detected by the temperature sensor reaches a set temperature, the amount of radiant heat radiated from the heat generating means is reduced, and And a control device for adjusting the amount of hot air blown by the means so as to be reduced. According to this configuration, the switching of the heating mode between the warm air heating and the radiant heating described above is performed based on the external temperature detected by the temperature sensor.

In addition, a front panel having a plurality of small holes for covering at least the radiation protection plate is provided in front of the radiation protection plate and facing the external space. According to this, the radiant heat is transmitted through the radiation protection plate, is dispersed throughout the front panel, and is radiated from the small holes of the front panel.

[0011]

Embodiments of the present invention will be described with reference to the drawings. First, the configuration of the oil fan heater according to the present invention will be described. FIG. 1 is a front view of an example of an oil fan heater according to the present invention, and FIG. 2 is a side sectional view thereof. The oil fan heater main body 1 forms a front surface of the main body 1 and is detachably provided on a front plate 2 (see FIG. 5).
And a casing composed of side walls (not shown) at both ends in the width direction and a top plate 6 integrally or separately formed. It is placed.

On the front surface of the main body 1, an operation unit 3 formed above the operation unit 3 for operating in a desired mode or setting a room temperature by performing a key input operation is provided. An outlet 4 extending downward in the width direction and having an opening formed therein to blow warm air is provided. The combustion chamber 9 is defined by a front wall 17, a back wall 18, and side walls (not shown) at both ends in the width direction, and has a structure having an opening above. The front wall 17 surrounding the combustion chamber 9
The inner wall 18 is made of a heat-resistant material in consideration of the influence of radiant heat due to the combustion flame, or is coated with a heat-resistant material to improve the durability against long-term use. Combustion chamber 9
Is separated from its lower part by a lower heat shield plate 31, and a burner box 32 containing the burner 7 is suspended from the lower heat shield plate 31.

Above the flame opening 7a of the burner 7, a frame sensor 8 for detecting the flame current of the combustion flame is provided.
The frame sensor 8 is connected to a control device 16.
Reference numeral 28 denotes a room temperature thermistor which is disposed at an arbitrary position in the back of the main body 1 and detects a room temperature.
8 is also connected to the control device 16. The control device 16 is composed of a general-purpose microcomputer. As shown in FIG. 3, the outputs of the room temperature thermistor 28 and the frame sensor 8 are inputted to the control device 16, and the outputs are the fan motor 10 and the fuel pressure feed. An electromagnetic pump 22 is connected. In this figure, circuits related to heating control are omitted.

Reference numeral 11a denotes an upper partition plate for partitioning the combustion chamber 9 inside the main body 1 from its upper part. The upper partition plate extends substantially horizontally from the back to the front, and hangs down from the bent portion in the middle with a predetermined inclination. It has a structure. An upper heat shield plate 11b is supported and fixed below the upper partition plate 11a so as to face the upper partition plate 11a. Therefore, the air introduction conduit 13 is formed in the space between the upper partition plate 11a and the upper heat shield plate 11b. Further, the upper partition plate 1
In front of the display unit 1, a display unit 15 that forms a part of the operation unit 3 and displays an operation mode, a room temperature, and the like, receives an input from the operation unit 3, controls the operation of a device, Part 1
5 is provided with a control device 16 equipped with a microcomputer for displaying various information. And the main body 1 at the back of the combustion chamber 9
A fan motor 10 is mounted on the back surface, and a blower fan 10a is rotatably fixed to a rotating shaft thereof.

On the other hand, a louver mounting plate 19 is provided upright in front of the combustion chamber 9. FIG. 4 is an external perspective view of the louver mounting plate from the front. Louver mounting plate 1
9 has an opening 14 at a portion facing the combustion chamber 9 as shown in FIG. The length in the height direction of the opening 14 is 110 to 120 mm, and 70 to 80 mm above the opening 14.
A radiation protection plate 12 is attached by welding, fitting, or the like so as to cover the mm portion. The radiation protection plate 12 is provided with a large number of small holes (slit holes of 5 mm long × 10 mm wide, opening ratio 60%) throughout, and the surface thereof is coated with a heat-resistant black system. . Therefore, even if the inside of the main body 1 is seen through from the front of the main body 1, it is dark and its internal structure is difficult to read.

The opening 1 below the radiation protection plate 12 is provided.
A portion 4 is a hot air outlet, and a plurality of (two in this figure) louvers 4a, 4a,... Are arranged so as to extend in the width direction of the louver mounting plate 19 including this portion. I have. Reference numeral 37 denotes a substantially rectangular opening provided substantially at the center of the louver mounting plate 19 in the height direction and near both side edges. When the front panel 24 is mounted, the opening 37 is provided as described later. The stopper 34 of the front panel 24 has a dimensional shape.

FIG. 5 is an external perspective view of the front plate from the front. The front plate 2 is made of metal and formed by press working. Above the blowout opening 4 formed at about 1/3 of the lower part, the operating portion is provided when the front plate 2 is mounted on the main body 1. 3, a front panel 24 having a large number of small holes (round holes having a diameter of 2 to 3 mm, an opening ratio of 60%) is provided detachably over the entire surface except for the opening 44. ing. That is, as shown in FIGS. 7 and 8, the claw portion 39 at the upper end of the front panel 24 is connected to the slit portion 38 above the front plate 2.
And the front panel 24 is attached to the front plate 2 with one touch by pushing a hinge-type stopper 34 attached to the folded portion 25 formed at the lower end of the front panel 24 at a substantially horizontal bent portion with a screw or the like. Can be removed in the reverse order. A large number of ventilation holes 26 are formed in the folded portion 25.

FIG. 6 is a front view showing a state in which the front plate and the louver mounting plate have been removed from the oil fan heater according to the present invention. A fuel tank 21 is provided on the side of the main body 1 for receiving a liquid fuel such as kerosene from a refueling tank (not shown) and storing a predetermined amount of the liquid fuel. It is connected to the vaporizer 20 via the electromagnetic pump 22 for pressure feed and the oil feed pipe 27.

Next, the operation of the oil fan heater having the above configuration will be described. When the operation switch (not shown) of the operation unit 3 of the oil fan heater is turned on and driven, the power supply to the vaporizer heater (not shown) attached to the vaporizer 20 is started, and the vaporizer 20 is heated. . At this time, the temperature of the vaporizer 20 is detected by a vaporizer thermistor (not shown). When the vaporizer 20 is heated to a preset vaporizer temperature, the fuel pump electromagnetic pump 22 is energized. .
Then, the electromagnetic pump 22 is driven to pump up the liquid fuel in the fuel tank 21 and the oil feed pipe 27
And is sent to the vaporizer 20 via. After the liquid fuel is gasified by the heated vaporizer 20, the liquid fuel is injected from a nozzle toward an opening of the burner 7, and is introduced into the burner 7 together with combustion air. The fuel gas sufficiently mixed with the air is blown out from the burner port 7a of the burner 7, and is ignited at the burner port 7a and burns in the combustion chamber 9. At this time, the room temperature is detected by the room temperature thermistor 28, and based on the temperature difference between the room temperature and the set temperature, the control device 16
The amount of liquid fuel sent to the carburetor 20 is changed by controlling the driving of the carburetor 20, thereby appropriately adjusting the amount of radiant heat obtained by combustion.

After the combustion is started in the burner 7 and the flame sensor 8 detects a flame current equal to or greater than a preset current value, the fan motor 10 provided on the back of the main body 1
And the blower fan 10a rotates. The rotation speed is controlled by the control device 16. In this way, the rotation of the blower fan 10a starts, and accordingly, the air in the room is sucked from the filter 29 facing the external space on the back surface of the main body 1. The sucked indoor air deprives the radiant heat obtained in the combustion chamber 9, and further mixes with the combustion gas and is blown out as hot air from the outlet 4 to the outside of the main body 1 to circulate in the room and raise the room temperature. .

Hereinafter, the flow of air in the main body 1 will be described with reference to FIG. In a cold winter, when the temperature is very low, immediately after turning on the operation switch (not shown) of the oil fan heater, the indoor temperature is considerably lower than the set temperature,
It is necessary to increase the temperature of the room rapidly. For this reason,
The control device 16 increases the driving output of the electromagnetic pump 22 and increases the amount of liquid fuel sent to the vaporizer 20 to increase the combustion power of the combustion flame in the burner 7 and the electromagnetic pump 2.
The output of the fan motor 10, which is controlled in conjunction with 2, is also increased to increase the rotation speed of the blower fan 10a. Thereby, as shown by the arrow A in the figure, 130 to 180
C. hot air is blown into the room vigorously, and the temperature in the room can be quickly raised to the set temperature.

After the room temperature reaches the set temperature, the control device 16 lowers the drive output of the electromagnetic pump 22 and reduces the amount of liquid fuel sent to the carburetor 20, thereby weakening the combustion power of the combustion flame in the burner 7. And the electromagnetic pump 2
The output of the fan motor 10, which is controlled in conjunction with 2, is also lowered to reduce the rotation speed of the blower fan 10a. As a result, radiant heat of a relatively low temperature passes through the radiation protection plate 12 having a large number of small holes as shown by the arrow B in the figure, and
4 is scattered over the entire surface and radiated into the room as a breeze, so that the room temperature can be kept substantially constant around the set temperature, and even when there is a warmer just before the oil fan heater, the discomfort due to the hot air blowing is eliminated. be able to. In addition, compared to the conventional structure that constantly blows out hot air at a considerable wind speed, noise leaking into the room such as fan motor driving noise, blower fan rotation noise, and hot air blowing noise is reduced, so it is quieter. A desired heating effect can be obtained comfortably.

Further, since the radiation protection plate 12 and the front panel 24 are formed of a metal material, the radiation protection plate 12 and the front panel 24 easily accumulate heat due to the heat conduction of warm air or radiant heat passing therethrough, and are likely to become high in temperature. In the oil fan heater according to the present invention, the air introduction conduit 13 is formed above the machine room in the main body 1, and a part of the room air sucked from the filter 29 on the back of the main body 1 is affected by the radiant heat due to combustion. As it flows through the air introduction pipe 13 as shown by a dotted arrow in the drawing and continuously flows to the radiation protection plate 12 and the front panel 24 without being subjected to heat, it is cooled efficiently to reduce the surface temperature. Can be lowered.
As a result, the surface temperature of the radiation protection plate 12 is maintained at about 100 ° C., and the one front panel 24 is maintained at 70 to 80 ° C., so that the surface temperature of the front panel 24 provided facing the room is abnormal. Warming can be avoided and the warmer can use the front panel 24
Touching can prevent accidents such as burns.

Further, since the opening area of the filter 29 on the back of the main body 1 is made relatively small as compared with that of the many small holes of the radiation protection plate 12, dust and dirt in the air sucked together with the air are reduced. Most of the dust is removed by the filter 29.Particularly, when the oil fan heater is operated in a mode in which the radiant heat is sent from the front panel 24 into the room in a wrinkle manner, some fine dust and dust passing through the filter 29 are removed. After passing through the radiation protection plate 12 and adhering to the front panel 24, these dusts and dust accumulate over a long period of use, and
Some of the small holes may be blocked, and the surface temperature around the portion may rise abnormally. However, in the oil fan heater according to the present invention, since a large number of ventilation holes 26 are provided in the folded portion 25 at the lower end of the front panel 24, hot air leaks from the ventilation holes 26, and a portion where the front panel 24 is blocked. It is possible to prevent an abnormal rise in the surface temperature at the surface, and to prevent the clogged dust or dust from being scorched.

Since the front panel 24 is detachably provided, the front panel 24 can be removed from the front plate 2 for cleaning. The procedure is as follows: the stopper 34 attached to the folded portion 25 at the lower end of the front panel 24. The curl portion 34a of FIG.
7), the tab 39 at the upper end of the front panel 24 is attached to the front panel 2 as shown in FIG.
The front panel 2 is pulled out from the upper slit portion 38.
After suctioning and removing dust and dirt adhering to 4, the front panel 24 is returned to its original position.

The operation for attaching and detaching the front panel 24 can be performed even while the oil fan heater is operating.
At the time of mounting, the tip of the stopper 34 penetrates through the opening 37 of the louver mounting plate 19 as shown in FIG.
By pressing a button 35a of a microswitch 35 provided at a position slightly behind the opening 37 to control ON / OFF of the oil fan heater, the microswitch 35 is turned on to drive the oil fan heater.
The front panel 24 is operated during the operation of the oil fan heater.
When the button 35a is removed from the front plate 2, the pressing of the button 35a is released, and the microswitch 35 is turned off to stop driving the oil fan heater. Accordingly, it is possible to prevent accidents such as receiving hot air with discomfort when attaching and detaching the front panel 24 and touching the stored high-temperature member to cause burns.

In this embodiment, the case where the radiation protection plate is mounted so as to cover a part of the opening of the louver mounting plate has been described. However, the same applies when the radiation protection plate is provided over the entire opening. Of course, the effect can be expected. Instead of providing a large number of small holes in the radiation protection plate or the front panel, these may be formed in a mesh-like or honeycomb-like structure. Further, in the present embodiment, the oil fan heater has been described as an example, but another heating device such as a gas fan heater or a ceramic fan heater may have a similar structure.

[0028]

As described above, according to the present invention, since the radiation protection plate having a large number of small holes is provided at the portion of the outlet corresponding to the heat generating means, the outlet has a ventilation resistance. However, when the momentum of the warm air blown by the blowing means is strong, the warm air is blown out through the radiation protection plate while maintaining the momentum to some extent, whereas the blowing speed of the warm air is Is loosened, the radiant heat is slowly transmitted from the radiation protection plate and radiated forward. Therefore, the room can be quickly heated to the set temperature without delaying the rise of the room temperature immediately after the start of operation, and thereafter the room temperature can be kept substantially constant near the set temperature by radiating radiant heat on a breeze and radiating it. A fine and comfortable heating feeling can be obtained.

The switching of the heating mode between the hot air heating and the radiant heating is performed by appropriately adjusting the outputs of the blowing means and the heating means based on the temperature sensor for detecting the room temperature. It can be easily realized by the control device that performs the control. By arranging a front panel having a large number of small holes facing the outside space in front of the radiation protection plate, a safe heating device capable of preventing accidents such as burns without impairing aesthetic appearance. Can be provided.

[Brief description of the drawings]

FIG. 1 is a front view of an example of an oil fan heater according to the present invention.

FIG. 2 is a schematic side sectional view of the fan heater of FIG. 1;

FIG. 3 is a block diagram of a control device for an oil fan heater according to the present invention.

FIG. 4 is an external perspective view from the front of a louver mounting plate of the oil fan heater according to the present invention.

FIG. 5 is an external perspective view from the front of a front plate of the oil fan heater according to the present invention.

FIG. 6 is a schematic front view showing a state where a front plate and a louver mounting plate are removed from the oil fan heater according to the present invention.

FIG. 7 is a partially omitted side sectional view of the oil fan heater according to the present invention.

FIG. 8 is an enlarged view of a main part of FIG. 7;

FIG. 9 is a partially omitted front sectional view of an example of a conventional oil fan heater.

FIG. 10 is a schematic side sectional view of the oil fan heater of FIG. 8;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 oil fan heater main body 2 front plate 3 operation unit 4 outlet 4 a louver 5 table 6 top plate 7 burner 7 a flame outlet 8 frame sensor 9 combustion chamber 10 fan motor 10 a blower fan 11 a upper partition plate 11 b upper heat shield plate 12 radiation protection Plate 13 Air introduction pipe 14 Opening 15 Display 16 Control device 20 Vaporizer 21 Fuel tank 22 Fuel pump electromagnetic pump 27 Oil feed pipe 24 Front panel 25 Folding part 26 Vent hole 29 Filter 31 Lower heat shield plate 32 Burner box 34 Stopper 35 Micro switch 37,44 Opening

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Morikawa Mamoru F-term in Sharp Co., Ltd. 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka 3L028 AA02 AB01 AC01

Claims (9)

[Claims] 1. A heating apparatus comprising: a heating means for radiating radiant heat; and a blowing means for heating air taken in from the outside through the heating means to blow air as warm air from an outlet to the outside. Heating equipment characterized in that a radiation protection plate having a large number of small holes is provided at the outlet corresponding to the means. 2. The heating apparatus according to claim 1, wherein the radiation protection plate is provided over the entire surface of the outlet. 3. The heating apparatus according to claim 1, wherein the radiation protection plate is provided at a part of the outlet. 4. The radiation protection plate according to claim 1, wherein an opening is formed below the outlet, and the radiation protection plate is disposed at a portion of the outlet above the opening. Heating equipment. 5. The heating apparatus according to claim 1, further comprising a control device for supplying electricity to said heat generating means so as to adjust a heat generation amount of radiant heat. 6. The heating apparatus according to claim 1, further comprising a control device that energizes the blowing unit so as to adjust a blowing amount of the hot air. 7. A control device for energizing the heating means so as to adjust the amount of heat generated by radiant heat and energizing the blowing means so as to adjust the amount of hot air blown based on the amount of generated heat. The heating apparatus according to any one of claims 1 to 4, wherein 8. A temperature sensor for detecting an external temperature, and after the external temperature detected by the temperature sensor reaches a set temperature, the amount of radiant heat radiated from the heat generating means is reduced and the air blowing is performed. The heating device according to any one of claims 1 to 4, further comprising a control device that adjusts the amount of hot air blown by the means so as to decrease the amount. 9. A front panel having a plurality of small holes provided at least to cover the radiation protection plate in front of the radiation protection plate and facing the external space.
The heating device according to claim 8.