JPH0320567A - Hot-air space heater - Google Patents

Abstract

PURPOSE:To extend the reach of warm air so as to expand the comfortable space in ratio in a controlled space by providing a control device whereby an upper adjustable airfoil is slid upward or downward according to the volume of warm air or the heating value and a lower adjustable airfoil makes a slope with the forward end at a low position when the heating is reduced to the weakest. CONSTITUTION:An upper adjustable airfoil 17 is turned to make different angles according to signals from a combustion control; it makes an angle X for 'strong', an angle Y for 'medium', and an angle Z for 'weak' in a linkage with the degree of combustion and the volume of air sent by a convection blower. Since a connecting plate 39 is connected to a pivot 37a of an upper-adjustable-airfoil lever 37 by means of a tensile spring 40, a turn of the upper adjustable airfoil 17 moves the connecting plate 39 downward in a straight-line motion. Then, guided by a lower-end-of-a-slit 39b, a lower-adjustable-airfoil lever 38 turns with turn of a pivot 38a thereon in an interlocking motion with the upper-adjustable-airfoil lever 37. When the combustion and the blowing of air are switched to 'weak', the upper adjustable airfoil 17 makes a steep slope and the lower adjustable airfoil 35 is also raised somewhat so that warm air is made to flow close to the floor.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot air heater that heats a room using hot air. BACKGROUND TECHNOLOGY In general, this kind of hot air heater, for example, a fan heater, has a first
As shown in FIG. 3, a burner 102 as a heat generating means is provided in the main body 101, and fuel gas from the burner 102 is mixed with air from a blower 103 received at the back of the main body and blown out from a hot air outlet 104 to heat the room. It is designed to do so.
The warm air outlet 104 has a horizontal looper 1.
A large number of 05 are provided to guide the warm air in a substantially horizontal direction. Invention tries to solve! II However, 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 temperature distribution in the room is affected during strong heating, medium heating, and weak heating. There is a big difference! There was an IB. In other words, during strong heating, the air from the blower 103 is strong, so the hot air is blown far, and the living space that the user usually uses (excluding the ceiling and corners of the room) has a fairly uniform temperature distribution. As the temperature decreases from medium to low, the amount of air blown from the blower 103 also decreases, and as a result, the drafting effect of the warm air becomes relatively strong, and the distance the hot air reaches becomes shorter, preventing the warm air from reaching the feet. This resulted in large differences in the indoor temperature distribution between high, medium, and low levels, resulting in users feeling uncomfortable, such as when their feet were cold and only the area near the heater became hot, resulting in uneven temperature distribution. Therefore, the inventor has developed a hot air outlet 10 as shown in FIG.
4 is provided with a rotatable variable jl 106, and this variable wing 1
We considered a system that could make the temperature distribution uniform by rotating the 06 according to the amount of hot air. However, in this case, when the variable blades 106 are tilted to blow out hot air, a large space 107 is formed at the bottom of the variable blades 106,
This space of 10 mm obstructed the flow of warm air as shown by arrow A, and the direction and velocity of the hot air were not always changed sufficiently. This was especially noticeable when the weakest combustion hot air volume was used. Therefore, the comfortable space ratio was significantly improved to 70% compared to the one-type fixed rule system.
There still remains room for improvement in improving the comfortable space ratio.The present invention was made in consideration of these points, and is aimed at improving the comfortable space ratio, especially during the time of the lowest heat generation. be. Means for Solving Problems 11111 In order to achieve the above object, the present invention includes a main body having a hot air outlet, a heat generating means provided in the main body, and a method for supplying air to the heat generating means to the hot air outlet. The upper and lower variable blades are provided with two rotatable variable blades, a drive means for rotating each of the variable blades, and the upper variable blade of the variable blades is caused to generate the hot air volume or the heat generation means through the drive means. It is equipped with a control section that swings up and down depending on the amount of heat, and a control section that tilts the lower variable blade so that the front end of the wing is tilted downward when the lowest heat is generated. Effect of the present invention With the above-mentioned structure, as the heating capacity is changed, the variable blade provided at the hot air outlet can be rotated and its inclination angle can be changed to change the hot air blowing angle. remains unchanged even if the heating capacity changes,
There will be less unevenness in the indoor temperature distribution, and more comfortable heating will be possible. Furthermore, when the heating is at its weakest, the lower variable blade also becomes slanted to form a tapered blowout space between it and the upper variable blade, so that the flow of hot air is smoothed and the direction can be changed by the upper variable blade. The effect of attracting the lower warm air to the upper warm air flow allows the warm air to reach farther as a whole, and the comfortable space ratio improves accordingly. EXAMPLES Below, examples of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a main body of the heater, and 2 a front plate attached to the front surface of the main body of the heater, which has an air outlet 3. Reference numeral 4 denotes a burner installed in the heater body 1, which serves as a heat generating means, 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, and is attached to the partition plate 6. Reference numeral 7 denotes a combustion cylinder that covers the upper part of the burner 4, and a honeycomb-shaped exhaust gas purification catalyst 8 is provided in the upper opening. Reference numeral 9 denotes a duct installed inside the heater body l so as to cover the combustion tube 7, and has an opening lO at the lower front surface. Reference numeral 11 denotes a convection blower installed facing the rear of this duct, which is covered by a fan guard 12 and supplies indoor air sucked in from outside the heater body 1 into the duct. The hot air is mixed with combustion gas from the hot air outlet 3 and blown out. 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 air outlet frame 14 is formed to have a concave cross section and has an opening l5 formed in its bottom wall, and this opening l5 is connected to the opening l0 of the duct 9.
The frame edge 14a is brought into contact with the inner surface of the front plate 2 to communicate the opening 10 of the duct 9 and the hot air outlet 3. A guide piece l6 in an inclined direction is provided on the upper green side of the air outlet frame opening l5. 17 is the aforementioned ylAW! i An upper variable blade is provided on the air outlet frame 14 so as to be located above the air outlet 3, and the inner surface thereof has an arcuate surface. As shown in FIG. 2, the variable blade 17 is rotatable as shown by the arrow d by having shafts 19 protruding from both ends thereof passed through a support fitting A13 attached to the side plate la of the main body of the heater. 2G is the axis 1 of the upper variable blade 17
A linking cam provided on one side of the bottle shaft 9 connects the two bottle shafts 21 and 22.
is provided. 23 is a drive plate for moving the upper variable blade 17, which is composed of a first drive plate 24 and a second drive plate 25;
These are superimposed so that they are slidable relative to each other, and are normally linked via a compression spring 26 so that they move as one. 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 upper variable blade 17 is fitted into one of the cutout grooves 24a. I have let you. Furthermore, 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. Reference numeral 30 denotes a guide that supports the first and second driving plates 24 and 25 in a superposed state so as to be vertically movable. Reference numeral 31 denotes a drive motor that moves the first and second drives #Ii 24 and 25 up and down, and is composed of a stepping motor that can rotate in forward and reverse directions. The drive shaft 33 of the cam 32 is connected to the second drive #I.
It is connected to the stepped portion 29 of i25. Reference numeral 34 denotes a tension spring for keeping the second drive plate 25 in constant engagement with the drive cam 32. 35 is a lower variable wing arranged below the upper variable wing l7.
Figure 3 shows the side opposite to the support fitting AI3.
Reference numeral 36 denotes a support fitting B, and an upper variable blade lever 37 is provided on the other side of the upper 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 37a and 38a are inserted are an upper elongated hole 39a and a lower elongated hole 30b, respectively. Reference numeral 40 denotes a tension spring that connects the upper part of the connecting plate 39 and the upper variable wing bin pongee 37a. 4
2 is the upper part of the torsion spring that applies an upward force to the upper variable blade lever 37, and 43 is the lower part of the torsion spring that applies the same force to the lower variable blade lever 38. 44 is a connecting plate support for preventing the connecting plate 39 from coming off. On the other hand, numeral 45 shown in FIG. 1 is a control section for controlling the combustion section and the drive motor 31, and this is constructed as shown in the block diagram of FIG. 5. That is, 46 is a temperature detecting section consisting of a thermistor or the like, 47 is a room temperature setting section for setting the indoor temperature, and 48 is a signal S1 from the temperature detecting section 46 and a signal S! from the room temperature setting section 47. A comparison/judgment section 49 outputs a signal S, such as strong, medium, or weak, depending on the difference, based on the output signal S from the comparison radius section 31. The combustion control section that controls the amount of air blown by the convection blower 1l also outputs a signal S4 that controls the combustion amount and the amount of air blown to the variable blade drive section 5l. The variable blade drive unit 51 outputs a signal S to the motor 31 to control the rotation angle of the upper variable blade 17 based on the signal S4. The sixth part is a flowchart showing the processing status of the combustion control section 5l. First, step 65 is to judge the operation of the operation switch, and if the switch is turned on, the next step 6
In step 6, the amount of combustion is calculated according to the difference between the room temperature and the set temperature, and in the next step 67, the rotation speed of the blower 11 is calculated, and in the next step 68, the pump frequency is calculated, and in the next step 69, the combustion amount is calculated. Output as output. After confirming the start of combustion in step 70, the upper variable true angle is calculated in step 71 according to the combustion amount calculated in step 66, the angular output is outputted in tesp 72, and the upper variable H17 is set at a predetermined angle. Rotate it. Note that step 73 is a branch that determines whether the vehicle is running or stopped; if it is running, it skips step 74 and proceeds to the next step; if it is stopped, it moves to the next step after processing step 74. do. Here, in step 74, the angle of the upper variable blade l7 calculated in step 7l is reset to the angle of the stop position. This makes it possible to always return the upper variable wing 17 to the stop position when stopping. Next, the operation of this embodiment configured as described above will be explained. First, before starting operation, the upper/lower variable levers 17 and 35 are located in a substantially vertical direction (this position is referred to as the stop position) as shown by the solid line in FIG. 7, and cover the hot air outlet 2. ．． When the operation switch is turned on from this state, the temperature detection section 4
6 and the output S3 from the comparison/judgment section 48 based on the output from the room temperature setting section 47.
is activated, issues a control signal S4, starts combustion according to a predetermined sequence, and rotates the convection hot air fan l1. Then, the variable blade drive section 51 issues a signal SS to drive the motor 31 to rotate the upper variable blade 17 to a predetermined angle. That is, the rotation of the motor 3l causes the drive shaft 33 of the drive cam 32 to rotate in the direction of arrow a as shown in FIG. The first driving plate 24, which is integrated with the holder via a tension spring 26, descends as shown by arrow b. As a result, the linking cam 20 rotates in the direction of arrow C via the pin shaft 21 fitted in the notched groove 24a of the first drive plate 24, and the linking cam 20 and the shaft 19 are integrally connected to each other. 17 rotates as shown by arrow d. Moreover, the rotation angle of the variable blade l7 changes according to the signal S4 from the combustion control unit 49, and the combustion amount and the convection blower are changed as indicated by X in FIG. 7 when it is strong, Y when it is medium, and Z when it is weak. It changes in conjunction with the air flow rate.
At this time, the lower variable blade 35 changes in conjunction with the upper variable blade l7. That is, when the upper variable blade l7 rotates, the connecting plate 39
Since the pin shaft 37a of the upper variable wing lever 37 is connected by a tension spring 40, the connecting plate 39 moves downward in a straight line. Accordingly, the pin shaft 38a of the lower variable blade lever 38 rotates while being guided by the lower elongated hole 39b, and the lower variable blade lever 38 rotates in conjunction with the upper variable blade lever 17. At this time, the lower torsion spring 43
As a result, the lower variable blade lever tends to be pulled upward, so that the pin shaft 38a is always in contact with the upper part of the lower elongated hole 39b. Next, the lower variable blade 35 hits the outlet frame l4,
As shown in FIG. 9, when the movement stops, the tension spring 40
extends, and the pin shaft 37a of the upper variable blade lever 37 slides in the upper elongated hole 39a. In other words, the length z of the upper and lower variable wing levers 37 and 3B. , it is approximately 11, the lower variable wing 35 moves faster than the moving speed of the upper variable wing 17, and as shown in FIG.
When 7 is X, the lower variable blade lever is at the X' position, opening the hot air outlet to its maximum. Next, when inside, the upper variable blade is in the Y position, but the upper variable blade lever 37 is in the elongated hole 39a.
Since the lower variable wing 35 only slides inside, the position of the lower variable wing 35 is X'
It is in the same position as . When it is weak, the upper variable wing 17 is in position 2. 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
As this happens, the lower variable wing lever 35, which is always urged upward by the torsion spring 43, comes into contact with the upper part of the lower elongated hole 39b and is slightly lifted, reaching the position Z' (Fig. 7, Figure lO). As is clear from the above, during strong combustion and strong wind blowing, the upper variable blade l7 becomes approximately horizontal as shown in FIG. The large space below l7 has been eliminated. Therefore, the flow velocity increases overall, and as shown by X# in Figure 11, the warm air can reach farther than in the conventional system, and comfort can be improved. Next, in the case of medium combustion and medium delivery, it becomes as shown in Fig. 7 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' in Figure 11, reaching farther than in the conventional case.
Also, since the lower variable blade 35x' has the same shape as the bear, it prevents 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 stem 17 becomes inclined considerably downward as shown in FIG. 10Z,
At the same time, the lower variable blade 35 also lifts up a little as indicated by Z', so that the warm air flows along the floor surface as shown at 21 in Fig. 14. Therefore, even if the flow velocity of the hot air is low and it is easily affected by drafts, the hot air can reach much farther than with conventional systems. In particular, the presence of the lower variable blade 35 narrows the width of the outlet 3, increases the flow velocity, and increases the adhesion effect (Coanda effect) to the arcuate surface l8 of the upper variable blade 17 (improves the attraction effect). , which prevents hot air from blowing upward and improves comfort. Figure 12 (A), CB) shows a comparison of the comfortable space between one variable blade (^) and the variable blade according to the present invention (B), which shows that the comfortable space has been improved to 80%. , and the upper part of the body is not hot, indicating that the person is in a comfortable state of ``cold head and feverish feet''.

Next, when heating is performed as described above and the operation is stopped, the variable blade drive section 51 loses the output from the combustion control section 49 and rotates the motor 31 to its original state, that is, as shown in FIG. , and close the air outlet 3 with the two variable blades 17 and 35. In the description of the above embodiment, the upper variable vane 17 is variable in conjunction with both the combustion amount and the convection air flow rate, but this can be done by making it variable in conjunction with at least one of them. The specific structure is also shown as an optimal example for the present invention, and any structure may be used as long as it achieves the purpose and effect of the present invention.
Effects of the Invention As described above, the hot air heater of the present invention allows the upper and lower variable blades of the hot air outlet to be rotated in the vertical direction in conjunction with changing the amount of hot air or the amount of heat generated by the heat generating means, or manually. This allows the indoor temperature distribution to be kept almost constant regardless of the strength of the heating capacity, resulting in a comfortable heating effect with less discomfort. In particular, since the lower variable blade is tilted when it is at low speed, the flow of warm air is smoothed, and at the same time, the upper variable blade has the effect of attracting the flow of warm air that has changed direction, making the warm air reach further as a whole. As a result, the comfortable space ratio during low-light conditions improves accordingly.

[Brief explanation of 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 main parts, Fig. 4 is an external perspective view, and Fig. 5 shows the control section. 6 is a flowchart showing the operating state, FIG. 7 is a sectional view showing the operating state, FIGS. 8, 9, and 10 are sectional views showing the operating state in the table combustion state, and FIG. Figure 14 is a cross-sectional view of the hot air heater before improvement.

Claims (1)

[Claims] A main body having a hot air outlet, a heat generating means provided in the main body, a blower for supplying air to the heat generating means and blowing out warm air from the hot air outlet, and upper and lower two provided at the hot air outlet. a rotatable variable vane, a drive means for rotating each of the variable vanes, and an upper variable vane of the variable vanes through the drive means according to the amount of hot air or the amount of heat generated by the heat generating means. A hot air heater comprising a control unit that swings up and down and tilts the lower variable blade so that its front end side is positioned downward when the lowest heat generation is generated.