JP3409518B2 - Hot air heater - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for a hot air heater.

[0002]

2. Description of the Related Art Generally, a hot air heater of this kind, for example, a fan heater, is provided from a heat generating means 102 such as a burner provided in a main body 101 as shown in FIG. The air is mixed with hot air to be heated, and the hot air is blown from the hot air outlet 104 provided on the front surface of the main body to heat the room. In the recent fan heater, two variable blades 105 and 106 are provided at the hot air outlet 104, and the heat amount generated by the heat generating means 102 is used as the amount of air blown from the blower 103. It can be seen that it swings in synchronism with, and the difference between the upper and lower temperature distributions in the room during strong to weak heating is reduced.

That is, generally, as the heating becomes weaker, the amount of heat and the amount of blown air become smaller, and due to the draft of the warm air itself, the warm air does not flow far, and the indoor temperature distribution during strong heating and its temperature distribution state greatly change. It will end up. In this fan heater, the weaker the heating, the more the two variable blades 105 and 106 are inclined so that the hot air blows downward, and the hot air flows far even during the weak heating. The distribution does not differ much from the temperature distribution during strong heating.

[0004]

However, in the above-mentioned conventional configuration, when a person located in front of the warm air heater tries to directly apply warm air to warm it, the warm air flowing downward warms only the feet and the whole body is warmed. I couldn't apply warm air, and I rarely felt the feeling of heating. Also, if the variable blades were fixed upward, the warm air would be drafted and the temperature unevenness in the room would increase, and on the contrary, it was felt that the feet were cold.

The present invention has been made in view of the above points, and it is an object of the present invention to enable a person located in front of a warm air heater to feel a feeling of heating with the entire body.

[0006]

In order to achieve the above object, the present invention has a main body having a hot air outlet, a heat generating means provided in the main body, and the hot air blowing means for supplying air to the heat generating means. A blower that blows warm air out of an outlet, two upper and lower swingable variable blades provided at the hot air outlet, drive means that swings each variable blade, and the variable blade through the drive means. heat quantity control unit for swinging in a substantially horizontal direction under the variable wings with at least on variable vane Yutakakazeryou or heat generating means to swing vertically according to the amount of heat generated within the
And the instruction from the swing instruction means has no relation to the heat quantity control unit.
The heat quantity control output from the heat quantity control section and the variable blade control section that periodically oscillates the two variable blades up and down are discriminated to determine the heat quantity.
When the control output exceeds a predetermined amount of heat, the swing instruction means
Instruction and a control output determination unit to disable from the
Based on the discrimination result of the control output discrimination unit, the variable blade control unit
When the variable vanes are swung periodically, the two upper and lower variable vanes have different movements, and the variable vanes are swung so that the warm air has a wide angle.

[0007]

Further, the heat quantity control unit is configured to control at least the quantity of heat generated by the heat generating means based on the output from the room temperature detecting means and to output an output for swinging the variable blade to a position linked to this. And the control output discriminating unit discriminates the heat amount control output from the heat amount control unit, and when this heat amount control output becomes equal to or less than a predetermined heat amount, the swing output from the swing instruction means is given priority over the swing output from the heat amount control unit. It is configured to enable instructions.

[0009]

According to the present invention, in the above structure, by turning on the switch provided in the operation portion, the two variable vanes swing at a constant speed, and when the two variable vanes swing downward, the two variable vanes swing. By changing the angle of the variable vanes, the opening area of the outlet can be made smaller, and warm air can be blown downwards to a long distance.When the two variable vanes oscillate in the upward direction, the two variable vanes have a wide angle. Therefore, since the warm air is also blown out in a wide angle, the whole body of the person in front of the warm air heater can be warmed.

When the output from the heat quantity control unit is equal to or more than a predetermined heat quantity, the instruction from the swing instruction means is invalidated, and the variable blades are fixed at an angle so that the air outlet is fully opened, thereby shortening the room. Warming in time, validating the instruction from the rocking instruction means only within a predetermined heat amount range, and the whole body of a person who is located in front of the main body of the warm air machine in the room temperature startup state and in any heat amount area Has the effect of warming up more than before. Alternatively, even when there is no swing instruction means, the above-mentioned action can be automatically brought about.

Further, the heat quantity control section is configured to control at least the quantity of heat generated by the heat generating means based on the output from the room temperature detecting means, and to output an output for swinging the variable blade to a position linked to this. Therefore, even if the swing instruction means is released, the variable blade provided at the hot air outlet is swung to change the inclination angle thereof due to the change of the heat quantity based on the output from the room temperature detecting means, and the warm air is blown out. By changing the angle, you can evenly warm the room.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 and FIG. 2, 1 is a heater main body, 2 is a front plate mounted on the front surface of the heater main body 1, and has a warm air outlet 3. Reference numeral 4 denotes a burner provided in the heater body 1, and in this embodiment, a vaporization type burner for vaporizing and burning kerosene is used. A burner case 5 covers the lower portion of the burner 4 and is attached to the partition plate 6. Reference numeral 7 is a combustion cylinder that covers the upper portion of the burner 4, 9 is a duct that is provided inside the heater body 1 so as to cover the combustion cylinder 7, and an opening 10 is formed in the lower front portion. Reference numeral 11 denotes a convection blower mounted so as to face the rear portion of the duct 9, which is covered by a fan guard 12 and which allows the indoor air sucked from the outside of the heater body 1 to be blown by the duct 9
It is supplied into the duct 9, mixed with the combustion gas from the combustion cylinder 7 in the duct 9, and blown out from the warm air outlet 3.

Reference numeral 14 denotes an outlet frame provided in the lower opening 10 of the duct 9, both sides of which are fixed to indicator fittings 13 attached to both side plates 1a of the heater body 1. The outlet frame 14 is formed in a concave shape in cross section, and an opening 15 is formed in a bottom wall of the outlet frame 14. The opening 15 is aligned with the opening 10 of the duct 9, and the frame edge 14a is in contact with the inner surface of the front plate 2. Thus, the opening 10 of the duct 9 and the warm air outlet 3 are connected to each other. A guide side 16 in the direction of inclination is provided on the upper edge of the opening 15.

Reference numeral 17 denotes an upper variable blade provided on the outlet frame 14 so as to be located above the warm air outlet 3, and an inner surface side thereof has an arcuate surface 18. The upper variable blade 17 has a shaft 19 projecting from both ends thereof, which is passed through a support fitting 13 attached to the heater main body side plate 1a so as to be swingable as shown by an arrow d. Reference numeral 20 denotes a link cam provided on one of the shafts 19 of the upper variable vane 17, which has two pin shafts 21 and 22.

Reference numeral 23 denotes a drive plate for swinging the upper variable vane 17, which is composed of a first drive plate 24 and a second drive plate 25, which are superposed so as to be slidable with each other, and are usually integrated. It is made to cooperate via a compression spring 26 so as to move. Then, two cut grooves 24a and 24b are formed on the first drive plate 24 side of the drive plate 23, and one pin shaft 21 of the cooperation cam 20 of the upper variable blade 17 is formed in one of the cut grooves 24a. It is fitted. Further, the step portion 2 which forms a relief notch 28 on the side of the second drive plate 25 of the drive plate and serves as a cooperation part with a drive motor described later.
9 is formed. 30 is the first and second drive plates 24,
It is a guide that supports 25 so that it can move up and down.

Reference numeral 31 is a drive motor for moving the first and second drive plates 24 and 25 up and down, which serves as a variable blade drive unit, and is constituted by a forward / reverse stepping motor, and its motor shaft. A drive cam 32 is attached to the drive cam 32, and the drive shaft 33 of the drive cam 32 is engaged with and cooperates with the step portion 29 of the second drive plate 25. 34 is the second drive plate 2
5 is a tension spring for always engaging the driving cam 32.

Reference numeral 35 denotes a lower variable blade disposed below the upper variable blade 17, and a substantially central portion of the vertical width is supported by a shaft 35a.
As shown in FIG. 1, the lower front end 35b of the upper variable vane 17 is set to project forward from the lower front end 17b of the upper variable vane 17 when swinging.

FIG. 3 shows the side opposite to the support fitting 13, and 36 is the support fitting B. A pin shaft 37 a of the upper variable blade lever 37 and a pin shaft 38 a of the lower variable blade lever 38 are connected to the other side of the upper variable blade 17 by a connecting plate 39. The portions of the connecting plate 39 into which the pin shafts 37a and 38a are inserted are elongated holes 39a and 39b, respectively. Reference numeral 40 is above the connecting plate 39 and the upper variable blade pin shaft 37a.
It is a tension spring that cooperates with.

Reference numeral 42 is a torsion spring for applying an upward force to the upper variable blade lever 37, and 43 is a torsion spring for applying a similar force to the lower variable blade lever 38. Reference numeral 44 is a connecting plate support for preventing the connecting plate 39 from coming off.

On the other hand, the control unit 45 shown in FIG. 1 controls the burner 4, the convection blower 11 and the drive motor 31, which is constructed as shown in the block diagram of FIG. That is, 46 is a room temperature detecting unit including a thermistor, 47 is a room temperature setting unit that sets the room temperature, 48 is a signal S1 from the room temperature detecting unit 46 and a signal S from the room temperature setting unit 47.
The comparison and judgment section 49 compares the value of 2 with the quantity of heat of the burner 4 based on the output signal S3 from the comparison and judgment section 48, and outputs a signal S3 such as strong, medium or weak according to the difference. A heat quantity control unit that controls the air flow rate of the blower 11 outputs a signal S4 that controls the heat quantity and a signal S5 that controls the air quantity, and the swing control section 51 can also determine the heat quantity by the signal S6.
It is designed to output.

As shown in FIG. 4, reference numeral 50 is a switch means provided in the operation portion of the main body 1 and serves as swing instruction means. However, when the switch means 50 is OFF, the angle at which the air outlet is fully opened. A signal S8 for swinging the variable blade is output to the drive motor 31. When the switch means 50 is in the ON state, the drive motor 31 is output with a signal S8 ′ that periodically oscillates the upper and lower variable vanes 17 and 35 up and down.

FIG. 6 shows the control unit 45 in this embodiment.
6 is a flowchart showing the processing state of FIG. First, in step 65, the operation of the operation switch is determined. When the switch is turned on, the calorific value is calculated according to the difference between the room temperature and the set temperature in the next step 66, and the next step 6
Similarly, the number of revolutions of the convection blower 11 is calculated in step 7, and they are output as a heat output in step 69. Then, in step 70, the start of combustion is confirmed. Step 75 is the main body 1
Is to determine whether the switch means 50 is on or off. When the switch means 50 is off, the up-down variable blade angle at which the air outlet is fully opened is calculated in step 71, and the angle is output in step 72. Then, the upper and lower variable wings 17 and 35 swing the solid line in FIG.
If 0 is ON, the process proceeds to step 72 ', and periodically swings.

Step 73 is a branch for judging whether the vehicle is in operation or stopped. If the vehicle is in operation, step 74 is skipped and the process proceeds to the next step.
After processing, shifts to the next step.

In the embodiment shown in the block diagram of FIG. 7 and the flowchart of FIG. 8, the control output judging section 51a is provided in the swing control section of FIG. 6 and the switch means 50 is in the ON state. When the signal S6 sent from the heat quantity control unit 49 is equal to or more than the predetermined heat quantity, the switch means 5
A signal S8 for invalidating the instruction from 0 and swinging the variable blade at an angle at which the air outlet is fully opened is output to the drive motor 31. If the signal S6 sent from the heat quantity control unit 49 is less than or equal to the predetermined heat quantity, the signal S6 that periodically oscillates the upper and lower variable vanes 17 and 35 up and down as it is.
8 ′ is output to the drive motor 31.

In the embodiment shown in the block diagram of FIG. 9 and the flowchart of FIG. 10, the control output judging section 51a is provided in the swing control section 51, and when the switch means 50 is off, the step 66 is executed. the upper and lower variable vane angle according to the calculated amount of heat "calculated in, the angle step 72" step 71 is outputted, the upper and lower variable vane 17, 35 is by a predetermined angle swing the solid line in FIG. 11, switching means 50 Is ON
In this case, a signal for periodically changing the upper and lower variable vanes 17, 35 is output in step 72 'in preference to the heat quantity.

Step 73 is a branch for judging whether the vehicle is running or stopped. If the vehicle is running, step 74 is skipped and the process proceeds to the next step.
After processing, shifts to the next step. If the switch means 50 is turned on in step 75, and if the calorific value output of step 69 is within the predetermined calorific value range in the newly added step 76, the process directly proceeds to step 72 ′. The upper and lower variable blade angles are calculated in step 71 "according to the heat quantity calculated in step 66, and the angle is output in step 72". The upper and lower variable blades 17, 35 swing the solid line of FIG. Go to step.

Next, the operation of this embodiment configured as described above will be described. First, before the start of operation, the upper and lower variable wings 17, 35
Is located in a substantially vertical direction (this position is referred to as a stop position) as shown by the solid line in FIG. 11, and covers the warm air outlet 3.

When the operation switch is turned on from this state,
The calorie control unit 49 operates by the output S3 from the comparison / determination unit 48 that is generated based on the outputs from the room temperature detection unit 46 and the room temperature setting unit 47, and outputs the outputs S4 and S5 to start combustion in accordance with a predetermined sequence. , The convection blower 11 is rotated. Further, the swing control unit 51 outputs the output S8 to the drive motor 31 in response to the output S6 from the heat amount control unit 49, and the drive motor 31 swings the upper and lower variable vanes 17 and 35.

That is, the rotation of the drive motor 31 causes the drive shaft 33 of the drive cam 32 to rotate as shown by the arrow a as shown in FIG. 2, and the second drive plate 25 and the tension spring which are pulled by the tension spring 34. The first drive plate 24 integrated via 26 descends as indicated by arrow b. Thereby, the pin shaft 2 fitted in the notch groove 24a of the first drive plate 24
The linkage cam 20 rotates via the arrow 1 as shown by the arrow c, and the upper variable vane 17 integrated with the linkage cam 20 and the shaft 19 rotates as indicated by the arrow d.

At this time, the lower variable blade 35 changes in conjunction with the upper variable blade 17. That is, when the upper variable wing 17 swings, the connecting plate 39 and the pin shaft 37a of the upper variable wing lever 37 are connected by the tension spring 40, so that the connecting plate 39 moves linearly and moves downward. As a result, the long hole bottom 39b
The lower variable vane lever 38 is oscillated in conjunction with the upper variable vane lever 17 by being guided by.

In this way, the upper and lower variable blades 17 and 35 oscillate, and when the switch means 50 is turned on, the upper and lower variable blades oscillate between X and X'and Z and Z'in a constant cycle.

Therefore, when the two variable blades are in the Z and Z'positions, they warm the feet of the person in front of the warm air heater and the entire body as X and X '.

Further, in addition to the above-mentioned embodiment, the lower variable blade 35 does not oscillate in the heat quantity range defined by changing the length of the long hole portion 39b of the connecting plate 39 shown in FIG. It swings only when starting and stopping combustion. As a result, of the upper and lower variable blades, only the upper variable blade 17 can be swung by the signal from the swing controller 51. In this case, as shown in FIG. 11, the lower variable blade 35 is at the position X ′ regardless of the change in heat quantity, and the upper variable blade 17 simply changes the direction of the warm air when swinging between X and Z. In addition, when the blowing angle of the warm air is upward, it blows out at a wide angle up and down to warm the whole body of the person in front, and conversely when the warm air is downward, the blowing area is narrowed and the feet are warmed far away. be able to.

FIG. 12 shows the actual flow of warm air. (A) is a conventional example, (b) is the product of this example, and the result of measuring the surface temperature of the person in front of the main body is about 10% as compared with the conventional product. It can be confirmed that the temperature rises by 3 ° C compared to the conventional one.

As described above, the warm air heater of the present invention is
In the above SL configurations, with the change of the heat quantity based on the output from the room temperature detecting means, it changes its angle of inclination and swinging the variable vane provided in the hot air outlet, by changing the blowout angle of the warm air, indoor In addition to being able to evenly heat the variable blades, the variable blades oscillate cyclically with priority by the switch means provided in the operation section regardless of the output from the heat quantity control section, and the direction of warm air blown up and down. The two variable blades can be used to swing in different directions, and when the two variable blades swing periodically, they move differently from each other.Therefore , when the variable blade swings downward, the opening area of the outlet Smaller,
The warm air can be blown downwards to a long distance, and when the variable blade oscillates in the upward direction , the warm air can be spread at a wide angle in the vertical direction, and even if the direction of the warm air changes because with less variation in the temperature, increasing the per sensible temperature throughout the body warm air of a person located in front warm-air heating machines, by lowering the set temperature, the same heating effect in a small amount of heat is obtained, more economical It can realize a warm air heater.

Further, the instruction from the switch means is made effective only in a certain heat quantity range, and the instruction from the switch means is invalidated when the output from the heat quantity control section is equal to or more than a predetermined heat quantity in the room temperature rising state. Thus, an abnormal rise in the front floor temperature is suppressed, hot air does not concentrate only at the feet, and there is no risk of discoloring or damaging the floor.
Further, even when the switch means is in an invalid state, the variable blade provided at the hot air outlet is oscillated to change its inclination angle in accordance with the change of the heat quantity based on the output from the room temperature detecting means, thereby changing the temperature of the hot air. By changing the blowing angle to the optimum angle for warming the room, the room can be warmed up evenly in any heat quantity area, and comfortable heating with low fuel consumption can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of a warm air heater according to an embodiment of the present invention.

FIG. 2 is a perspective view of the same upper and lower variable blade drive portion

FIG. 3 is a perspective view of the upper and lower variable blade connecting portions.

FIG. 4 is an external perspective view of the hot air heater.

FIG. 5 is a block diagram showing the operation of the control unit.

FIG. 6 is a flowchart showing the operation of the control unit.

FIG. 7 is a block diagram showing the operation of the control unit.

FIG. 8 is a flowchart showing the operation of the control unit.

FIG. 9 is a block diagram showing the operation of the control unit.

FIG. 10 is a flowchart showing the operation of the control unit.

FIG. 11 is an enlarged cross-sectional view showing an operating state of the hot air heater.

FIG. 12 (a) is a sectional view showing a flow of warm air without the swing instruction means. FIG. 12 (b) is a sectional view showing a flow of warm air with the swing instruction means.

FIG. 13 is a sectional view of a conventional warm air heater.

[Explanation of symbols]

1 body 3 hot air outlet 4 Heat generation means 11 Convection blower 17 Upper variable wing 35 Lower variable wing 45 Combustion control unit 50 Swing instruction means

─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Mitsuharu Tomioka 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Masayuki Namba, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Minami Yamada 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP-A-5-340609 (JP, A) JP-A-2-183763 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24H 3/04 305

Claims (2)

(57) [Claims] 1. A main body having a hot air outlet, a heat generating means provided in the main body, and a blower for supplying hot air to the heat generating means to blow out the warm air from the hot air outlet.
Two upper and lower swing-free variable blades provided at the warm air outlet, drive means for swinging each variable blade, and at least the upper variable blade of the variable blades through the drive means It causes vertical pivoting depending on the amount of heat the heat generating means generates heat for swinging in a substantially horizontal direction under variable vane
And amount control unit, the heat quantity controller in response to an instruction from the oscillation instruction means
Distinguishing the heat quantity control output from the heat quantity control section and the variable blade control section that periodically oscillates the two variable wings up and down independently of
However, when the calorie control output exceeds the predetermined calorific value, it swings
A control output discriminating unit for invalidating an instruction from the instruction unit, and based on the discrimination result of the control output discriminating unit, the variable blade control unit
A warm air heater characterized in that when the control section periodically oscillates the variable blades, the upper and lower variable blades move differently so that the variable blades oscillate so that the warm air has a wide angle. 2. The heat quantity control section is configured to control at least the quantity of heat generated by the heat quantity generation means based on the output from the room temperature detection means and to output an output for swinging the variable blade to a position linked to this. And the control output discriminating unit discriminates the heat amount control output from the heat amount control unit, and when this heat amount control output becomes equal to or less than a predetermined heat amount, the swing output from the swing instruction means is given priority over the swing output from the heat amount control unit. warm air heater of claim 1 Symbol placement to enable instruction.