JPH03144255A - Hot air heater - Google Patents

Abstract

PURPOSE:To reduce odor under an ignition or a fire distinguishing state by a method wherein a control part is provided for closing a variable vane when the ignition or the fire distinguishing is carried out and for opening the variable vane under a normal combustion, the variable vane has an aeration characteristic and further has an odor adsorbing function. CONSTITUTION:A relay 60 is turned on to energize an electrical heater 61 and to perform a preheating operation. Upon completion of the preheating, the relay 60 is turned off and then an igniter 62 is turned on. A combustion control part may output a specified pulse signal from an output part to a solenoid pump 64 so as to perform an ignition and a combustion and at the same time a convection flow air blower 11 is rotated. At this time, since vertical variable vanes 17 and 35 are set at their stopping positions under an instruction from a micro-computer 52, a hot air blowing port 3 is kept at its closed state. Due to this fact, a hot air fed out by the convection air blower 11 is flowed through an aeration hole 35a of the lower variable vane 35 coated with or filled with odor adsorbing material 35b such as active carbon or the like at its surface or inside of it and then the hot air is discharged into a room. With such an arrangement, it is possible to remove an uncomfortable odor generated during ignition.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot air heater that heats a room using warm air.

2. Description of the Related Art In general, this type of hot air heater, for example, a fan heater, is provided with a combustion section 102 in a main body 101 as shown in FIG. The warm air is mixed with the air and blown out from the hot air outlet 104 to heat the room. The warm air outlet 104 is provided with a large number of horizontal loopers 105 to guide the warm air in a substantially horizontal direction.

Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, the hot air outlet 104 is always open, so the odor at the time of ignition or extinguishing is discharged into the room together with the hot air, making the user feel uncomfortable. There was a problem.

In addition, since the looper 105 provided at the hot air outlet 104 is fixed to the main body, the direction of hot air blowing cannot be changed, and the user will not be exposed to hot air on his or her face when the room gets warm. Even if you try to do this, the user must either move away from the hot air heater or move the hot air heater, and depending on the room situation, you may not be able to do either of these, resulting in discomfort due to being exposed to hot air. There were times when I received In order to avoid this, when the warm air heater was turned off, the indoor temperature dropped and the room felt cold, making it impossible to obtain comfortable heating.

Furthermore, since the looper 105 is fixed and the direction of the hot air cannot be changed, there is a problem in that there is a large difference in the temperature distribution in the room between high heating, 1 medium heating, and low 1 heating. In other words, during strong heating, the air from the blower 103 is strong, so hot air is blown far away, resulting in a nearly uniform temperature distribution in the living space normally used by the user (excluding the ceiling and corners of the room). As the air flow rate becomes weaker (medium 3), the amount of air blown from the blower 103 becomes weaker (so the draft effect of the hot air becomes relatively stronger, the distance the hot air reaches becomes shorter, and the hot air reaches the feet). If the temperature is too strong, your feet will be cold, and only the area near the heater will get hot, causing uneven temperature distribution.
In the first year of middle school, there was a big difference in the indoor temperature distribution, which caused the user to feel uncomfortable.

The present invention has been made in view of these points, and its first objective is to reduce odor during ignition or extinguishing, and its second objective is to improve the comfortable space ratio.

! Means for Solving IB In order to achieve the above object, the present invention provides a main body having a hot air outlet, a combustion section provided in the main body, and a method for supplying air to the combustion section. a convection blower that blows out warm air from the warm air outlet; at least one variable blade rotatably provided to open and close the warm air outlet;
The variable blade is provided with a control unit that closes the variable blade at least during ignition or extinguishing, and opens the variable blade during normal combustion, and the variable blade is configured to have ventilation and an odor absorption function. The upper and lower variable blades are arranged in two pieces, and the upper and lower variable blades and the upper and lower variable blades are placed in a substantially vertical position at least during ignition or extinguishing to close the hot air outlet, and during normal combustion, the upper variable blade is and a control unit that swings the lower variable blade up and down in accordance with the amount of hot air or the amount of heat generated by the combustion section or by manual operation, and rotates the lower variable blade in a substantially horizontal direction, and at least one of the upper and lower variable blades It has a structure that is breathable and has an odor absorption function.

Effect of the present invention With the above-described configuration, the variable blades are placed in a substantially vertical position at least when igniting or extinguishing, and the /IA1!1 outlet is closed, so that warm air is always passed through the variable blades, so that no odor enters the room. In addition, when changing the heating capacity, the variable blade installed at the hot air outlet can be rotated to change its inclination angle to change the hot air blowing angle. Since the heating capacity can be changed, the distance that the hot air reaches remains the same even if the heating capacity is changed, and the unevenness in the indoor temperature distribution is reduced, making it possible to provide more comfortable heating. Moreover, the presence of the lower variable blades not only smoothes the flow of warm air, but also has the effect of attracting the warm air that has been redirected by the upper variable blades, allowing the warm air to reach further distances as a whole. The comfortable space ratio improves accordingly.

Embodiments Below, embodiments of the present invention will be described with reference to the drawings. Reference numeral 2 denotes a heating machine main body, and 2 a front plate attached to the front surface of the heating machine main body 1, which has a hot air outlet 3. Reference numeral 4 denotes a burner provided in the heater main body 1, which serves as a combustion section, and in this embodiment, a vaporization type burner that vaporizes and burns kerosene is used. 5 is a burner case that covers the lower part of the burner 4,
It is attached to the partition plate 6. Reference numeral 7 denotes a combustion cylinder that covers the upper part of the burner 4, and is installed upright on the partition plate 6, and a honeycomb-shaped exhaust gas purification catalyst 8 is provided at the upper opening.

Reference numeral 9 denotes a duct provided in the heater main body 1 so as to cover the combustion tube 7, and has an opening 10 formed at the lower front side. 11 is a convection blower installed facing the rear of this duct 9,
It is covered by a fan guard 12, and the heater body l
Indoor air drawn in from outside is supplied into a duct 9, mixed with combustion gas from a combustion tube 7 in this duct 9, and then blown out from a hot air outlet 3.

Reference numeral 14 designates an air outlet frame provided at the lower opening lO of the duct 9, and its both sides are spot-fixed to support fittings A13 (see FIG. 2) attached to the side plates 1a of the heater main body 1. This outlet frame 14 is formed to have a concave cross section and has an opening 1 in its bottom wall.
5, and the opening 15 is aligned with the opening 10 of the duct 9, and the frame edge 14a is brought into contact with the inner surface of the front plate 2 to connect the opening 10 of the duct 9 and the hot air outlet 3. ing. A guide piece 16 in an inclined direction is provided at the upper edge of the outlet frame opening 15.

Reference numeral 17 denotes a lower variable blade provided on the outlet frame 14 so as to be located above the hot air outlet 3, and the inner surface thereof has an arcuate surface 18. As shown in FIG. 2, the lower variable blade 17 is rotatable as shown by the arrow d by passing shafts 19 protruding from both ends thereof through a support fitting A13 attached to the side plate 1a of the main body of the heater. 20 is a linking cam provided on one side of the shaft 19 of the lower variable blade 17, and two pin shafts 21 and 22 are provided. Reference numeral 23 denotes a drive plate for swinging the lower variable blade 17, which is composed of a first drive plate 24 and a second drive plate 25, which overlap so that they can freely slide on each other, and are usually integrated. It is linked through a tension spring 26 for movement. Two cutout grooves 24a and 24b are formed on the first drive plate 24 side of the drive plate, and one pin shaft 21 of the linking cam 20 of the lower variable blade 17 is fitted into one of the cutout grooves 24a. It is. Further, an escape notch 28 is formed on the second drive plate 25 side of the drive plate, and a step 29 is formed which becomes a linking part with a drive motor to be described later. 3
Reference numeral 0 designates a guide that supports the first and second driving plates 24 and 25 in a superimposed state so as to be vertically movable.

Reference numeral 31 denotes a driving motor for vertically moving the 11th second driving plate 24.25, and is composed of a stepping motor capable of forward and reverse rotation.A driving cam 32 is attached to the motor shaft. 32 drive shafts 33 are engaged with the stepped portion 29 of the second drive plate 25 to be linked. 34 is a tension spring for always engaging the second drive plate 25 with the drive cam 32.

35 is a lower variable wing disposed below the lower variable wing 17.

Figure 3 shows the side opposite to the support fitting A13.
Reference numeral 36 denotes a support fitting B, an upper variable blade lever 37 is provided on the other side of the lower variable blade 17, and a lower variable blade lever 38 is provided on the lower variable blade 35. The pin shaft 37a of the upper variable blade lever 37 and the pin shaft 38a of the lower variable blade lever are connected to the connecting plate 3.
They are connected at 9. Further, the portions of the connecting plate into which the pin shafts 378% 38a are inserted are an upper elongated hole 39a and a lower elongated hole 39b, respectively. Reference numeral 40 denotes a tension spring that connects the upper part of the connecting plate 39 and the lower variable blade pin shaft 37a. 4
2 is the top of the torsion spring that applies an upward force to the upper variable blade lever 37, and 43 is the bottom of the torsion spring that applies a similar force to the lower variable blade lever 38. Reference numeral 44 denotes a temporary connection holder for preventing the connection plate 39 from coming off.

At least one of the upper and lower variable blades 17 and 35, in this embodiment the lower variable blade 35, is made of a hollow air-permeable base material such as a lath net or punching material, and activated carbon is applied to the surface or inside of the air-permeable base material. An odor absorbing material 35b such as the following is applied or loaded.

On the other hand, numeral 45 shown in FIG. 1 is a control section that controls the combustion section 4 and the drive motor 31, which is shown in FIG.

It is configured as shown in the block diagram of FIG.

That is, 46 is a temperature detection section consisting of a thermistor or the like;
Reference numeral 7 denotes a room temperature setting section for setting the indoor temperature, and 48 compares the signal S1 from the temperature detection section 46 and the signal St from the room temperature setting section 47, and sets the temperature to strong or medium depending on the difference.

A comparison/judgment unit 49 outputs a signal S such as a weak signal S, and a comparison/judgment unit 49 determines whether the burner 4 is
50a, 50b... are switches that drive the motor 31, and variable blade drive is performed according to signals from the switches 50a, 50b... The section 51 rotates the motor 31 by a predetermined angle. On the other hand, in FIG. 6, the combustion control section 49 sends a signal S4 for controlling the combustion amount and air blowing amount to the variable blade drive section 5.
1 is also output.

The variable blade drive unit 51 outputs a signal Ss to the motor 31 to control the rotation angle of the upper variable blade 17 based on the signal S4.

FIG. 7 shows an example of a specific circuit of the main part in FIG. 6. The combustion control section 49 is composed of a microcomputer 52 and peripheral circuits. The microcomputer 52 shown here is a so-called one-chip microcomputer having a CPtJSROM, a RAM, and an input/output section.

The temperature detection section 46 and the volume 53 are connected to an input section of a microcomputer 52 via an A/D converter 54. As a result, the temperature signal from the temperature detection section 46 and the angle signal of the upper variable blade 17 are converted into binary codes and read into the microcomputer 52. Reference numeral 55 is an operation switch for instructing the start of combustion, which is input to the microcomputer 52. 57 is a 1ms period for detecting the zero cross point of the AC signal f158 synchronized with the power supply frequency.
This is a zero-cross detection circuit that generates a pulse signal with a certain width.
2 indicates the zero cross point. Reference numeral 59 denotes a semiconductor switch, which is composed of an LED as a light emitting part and a trifle as a light receiving part. 60 is a relay for turning on and off the electric heating element 61, and 62 is an igniter. 63 is a driver, and its output terminals include a semiconductor switch 59, a relay 60, an am pump 64,
An igniter 62 and a stepping motor 31 are connected, and the output signal from the microcomputer 52 is amplified to drive each load. On the other hand, the AC power supply 65 has a relay 60
A convection electric heating element 61 via a contact point 60a and a convection blower 11 via a semiconductor switch 59 are connected in parallel, and the convection blower 11 can be adjusted to an arbitrary rotation speed by phase control. .

FIG. 8 is a flow chart showing the processing status of the microcomputer 52.

First, step 66 determines whether the operation switch 55 is operated. If the switch 55 is turned on, the next step 67 calculates the combustion amount according to the difference between the room temperature and the set temperature, and the next step 68 Similarly, convection blower 11
In the next step 69, the rotation speed is calculated, and in the next step 69, the pump frequency is calculated, and in the next step 70, they are output as combustion output.The start of combustion is confirmed in step 71, and in the next step 72, the vertically variable blade 17°35 is stopped. After confirming in the next step 73 that the position angle (approximately vertical B) has elapsed for a predetermined period of time, the upper variable blade angle is calculated in step 74 according to the combustion amount calculated in step 67. Then, the drive output is outputted in step 75, and the upper variable blade 1
7 by a predetermined angle to bring the lower variable wing 35 into a substantially horizontal state.

Note that step 76 is a branch to determine whether the vehicle is running or stopped; if the vehicle is running, steps 77 to 81 are skipped and the process proceeds to the next step; however, if the vehicle is stopped, steps 77 to 81 are processed. Then move on to the next step. That is, at the same time as the stopping operation, in step 77, the vertically variable blade 17.35 is set to the angle of the stopping position, and when a predetermined time has elapsed, in the next step 78, Vf! After confirming this, in the next step 79, the vertically variable blade 17.35 is reset to the predetermined open position angle, and in the next step 80, it is confirmed that this state has elapsed for a predetermined period of time. Step 81 is the vertically variable wing 17.3 set to the open position in step 79.
5 is set again to the angle of the stop position. As a result, when stopped, the vertical adjustment is always possible [1
7, 35 can be returned to the stop position.

Next, the operation of this embodiment configured as described above will be explained.

First, before the start of operation, the upper and lower variable blades 17.35 are located in a substantially vertical direction (this position is referred to as a stop position) as shown in FIG. 9, and cover the hot air outlet 3.

When the operation switch 55 is turned on from this state, the relay 60 is first turned on to energize the electric heating element 61 to preheat it. When the preheating is completed, the relay 60 is turned off, and then the igniter 62 is turned on and the combustion control section 49 For example, a constant pulse signal is outputted from the output section to the electromagnetic pump 64 to perform ignition and combustion, and simultaneously rotate the convection blower 11.

At this time, the vertically variable blades 17.35 are set to the stop position according to instructions from the microcomputer 52, so the hot air outlet 3 is in a closed state. Therefore, convection blower 1
1 is discharged into the room through the ventilation hole 35a of the upper variable blade 35 whose surface or inside is coated or loaded with an odor absorbing material 35b such as activated carbon, which eliminates unpleasant odors during ignition. Can be removed.

After a predetermined period of time has passed in this state, the vertically variable blades 17, 3
5 is rotated and opened at a predetermined angle from the stop position.

That is, as shown in FIG. 2, the rotation of the drive motor 31 causes the drive shaft 33 of the drive cam 32 to rotate in the direction of arrow a, and the second drive plate 25, which is stretched by the tension spring 34, and this second drive The first drive plate 24, which is integrated with the temporary 25 via a tension spring 26, descends as shown by the arrow. As a result, the linking cam 20 rotates in the direction of arrow C via the pin shaft 21 fitted in the notch groove 24a of the first drive plate 24, and the upper variable N
17 rotates as shown by arrow d.

Moreover, the rotation angle of the variable blade 17 changes according to the signal S4 from the combustion control unit 49, and the combustion amount and the convection blower 1 are changed as indicated by X in FIG.
It changes in conjunction with the airflow amount in step 1.

At this time, the upper variable blade 35 changes in conjunction with the upper variable blade 17. That is, when the upper variable wing 17 rotates, the connecting plate 39
Since the pin shaft 37a of the upper variable blade lever 37 is connected by a tension spring 40, the connecting plate 39 moves downward in a straight line, and is guided by the long lower part 39b, and the upper variable blade lever 38 will rotate, and the upper variable blade lever 38 will rotate in conjunction with the upper variable blade lever 37.

At this time, the upper variable wing lever 38 is
is about to be pulled upward, so the pin shaft 38a is always in contact with the upper part of the lower elongated hole 39b.

Next, when the upper variable blade 35 comes into contact with the outlet frame 14 and stops moving as shown in FIG.
Slide inside a. In other words, the upper/upper variable wing lever 37.
By setting the lengths ffi,
When is X, the upper variable wing lever 38 is in the X position,
When the hot air outlet 3 is opened to the maximum, the upper variable blade 17 is in the Y position, but since the upper variable blade lever 37 only slides inside the elongated hole 39a, the upper variable blade 17 is in the Y position. 35 is in the same position as X" (Fig. 12).

When it is weak, the upper variable wing 17 is at the Z position. At this time, the pin shaft 37a of the upper variable blade lever 37 comes into contact with the upper elongated hole 39a and lifts the connecting plate 39, so that the upper variable blade lever 37, which is always urged upward by the lower torsion spring 43, is brought into contact with the upper part of the lower elongated hole 39b and is slightly lifted, resulting in the position Z'' (Fig. 9, Fig. 13).
figure).

As is clear from the above, during strong combustion and weak air blowing, the upper variable blade 17 is approximately horizontal as shown in FIG. 11X, and the upper variable blade 35 is also approximately horizontal as shown in X'.

Therefore, the flow velocity is increasing overall, and Fig. 14
As shown by I1, the warm air can reach farther than in the conventional system, and comfort can be improved.

Next, in the case of medium combustion and low wind, it becomes as shown in Fig. 12 Y and slopes slightly downward. Therefore, the flow of warm air is more downward than when it is strong, and the hot air becomes like Y I + in FIG. 14, reaching farther than in the conventional case.

Moreover, since the upper variable blade 35 is in the same state as in X', it prevents the warm air from flowing too downward and increasing the temperature of the floor surface. Similarly, when the combustion becomes weak and the air is blown weakly, the upper variable blade 17 tilts considerably downward as shown in FIG. In Figure 14, it flows along the floor as indicated by Z l l.

Therefore, even if the flow velocity of the hot air is low and is easily affected by drafts, the hot air can reach a much farther distance than in the conventional case. In particular, the presence of the upper variable blade 35 narrows the width of the hot air outlet 3, increases the flow velocity, and causes the upper variable blade 17 to adhere to the arcuate surface 18 (Coanda effect).
By increasing the temperature (improving the attraction effect), the width of the warm air blowing out is widened and comfort is improved.

FIGS. 15(A) and 15(B) show a comparison of the comfortable space between a fixed louver (A) and a case with two variable blades according to an embodiment of the present invention (B). is 80%
It has improved to the point where it has improved to the point where it has not gotten hotter at the top, and [
I can see that I am in a comfortable state with a cold head and foot fever.

Next, when heating is performed as described above and the operation is stopped, according to the instructions from the microcomputer 52,
Since the vertically variable blades 17.35, which had been opened at a predetermined angle, are set to the stop position, the hot air flows through the ventilation hole 35a of the lower variable blade 35, which has the odor absorbing material 35b such as activated carbon, as in the case of ignition. Since it passes through and is discharged into the room, unpleasant odors from extinguishing the fire can also be removed.

After a predetermined period of time has passed in this state, the vertically variable blades 17, 3
5 is set to a predetermined open position according to instructions from a microcomputer 52, and the convection blower 11 cools the combustion section 4, etc., which have become high temperature during combustion, and after a predetermined time elapses, the variable blade drive section 51 starts combustion control. When the output from the section 49 disappears, the drive motor 31 is rotated to its original state, that is, rotated in the direction opposite to the arrow a in FIG. As a result, the first and second drive plates 24 and 25 are lifted upward, and the linking cam 20 is rotated in the opposite direction to the arrow C to rotate the upper variable blade 1.
7 is rotated back to its original state, that is, in a substantially vertical direction.

Then, since the connecting plate 39 connected to the upper variable blade 17 is lifted upward, the lower variable blade 35 is biased by the lower torsion spring 43 and comes into contact with the upper part of the lower elongated hole 39b of the connecting plate 39. It is rotated back to the vertical direction.

Therefore, when the operation is stopped, the hot air outlet 3 is almost completely covered by the upper variable vane 17 and the lower variable vane 35, which prevents dust etc. from entering the combustion section 4 and is very effective in terms of design. You can make it look neat.

In addition, in the above embodiment, two variable blades are provided and the degree of opening is changed according to the combustion amount, but the variable blade may be one that simply opens and closes. .

Further, in the above embodiment, the lower variable blade 35 is made of a breathable base material such as lath steel or punching material, and is equipped with an odor absorbing material 35b such as activated carbon. .35, or only one of them. Further, the vertically variable blades 17.35 may be made breathable by sintering the odor absorbing material 35b itself into a porous shape.

Furthermore, in the above embodiment, the upper variable l[17] is varied in conjunction with both the combustion amount and the convection airflow amount, but this can be done in conjunction with at least one of the two or manually rotated as necessary. However, other specific configurations are also shown as optimal examples for the present invention, and any configuration may be used as long as it achieves the objectives and effects of the present invention. It is.

Effects of the Invention As described above, the hot air heater of the present invention has the advantage of ignition (combustion start).
At least one of the variable blades is set to the stop position at the time of ignition and extinguishing (combustion stop), and warm air is passed through the variable blades equipped with odor absorbing material such as activated carbon, thereby suppressing odors during ignition or extinguishing. Can be done.

Furthermore, when the operation is stopped, the variable blades are positioned almost vertically and close almost the entire surface of the hot air outlet, resulting in a clean appearance, greatly improving the beauty of the design, and also directing dust and other particles to the combustion section. This can prevent the cause of abnormal combustion.

In addition, the upper and lower variable blades of the hot air outlet are rotated vertically in conjunction with changes in the amount of hot air or the amount of heat generated by the combustion section, or manually, so the temperature distribution in the room is maintained regardless of the strength of the heating capacity. can be kept almost constant, resulting in a comfortable heating effect with less discomfort.

In particular, the presence of the lower variable blade smoothes the flow of warm air, and at the same time, the upper variable blade has the effect of attracting the flow of warm air that has changed direction, allowing the warm air to reach further distances as a whole. The comfortable space ratio improves accordingly.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a sectional view of a warm air heater according to an embodiment of the present invention, FIGS. 2 and 3 are enlarged perspective views of the same essential parts, and FIG. 4 is an external perspective view. 5 and 6 are block diagrams showing the control section,
Fig. 7 shows a specific circuit port in the case of Fig. 6, Fig. 8 is a flowchart showing the operating state, Fig. 9 is a sectional view showing the operating state, Fig. 1O, Fig. 11, Fig. 12, Fig. Figure 13 shows the results for each combustion state! -Main body 3-・Different ν large eroticism 4・-Herb (Fuhara) If--j Hifu 5ku Ugobihi KF--It is a sectional view showing the gourd-style heating machine. 1...Main body, 3...Warm air outlet, 4.
... Combustion section, 11 ... Convection blower, 1
7... Upper variable wing, 35... Lower variable wing,
35b...Odor absorbing material, 45...Control unit.

Claims (2)

[Claims] (1) A main body having a hot air outlet, a combustion section provided in the main body, a convection blower that supplies air to the combustion section and blows out warm air from the hot air outlet, and a combustion section provided in the main body; At least one variable blade rotatably provided to open and close, and a control unit that closes the variable blade at least during ignition or extinguishing and opens during normal combustion,
Moreover, the above-mentioned variable blades are a warm air heater that has ventilation and odor absorption function. (2) A main body having a hot air outlet, a combustion section provided in the main body, a convection blower that supplies wind to the combustion section and blows out hot air from the hot air outlet, and At least during ignition or extinguishing, the upper and lower variable blades are placed in a vertical position to close the hot air outlet, and during normal combustion, the upper variable blade is used to adjust the amount of warm air or and a control section that swings the combustion section up and down according to the amount of heat generated or by manual operation, and rotates the lower variable blade in a substantially horizontal direction, and at least one of the upper and lower variable wings has ventilation. A hot air heater with odor absorption function.