JP2005069526A - Warm air circulator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a warm air circulator, in which the number of louvers is reduced to improve design performance, and in which safety and cleaning easiness are improved. <P>SOLUTION: A combustion chamber 2 provided with a burner 4 is disposed in the main body 1, and heat generated by the burner 4 is emitted into the room through a warm air blow port 8 provided in a front surface of the main body 1 by a warm air blower 7. The louvers 9a, 9b, and 9c are provided in three stages on the warm air blow port 8. Overhanging size of the uppermost louver 9a toward the combustion chamber 2 is set to be shorter than that of the other louvers 9b and 9c. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a hot air heater that places importance on design and reduces the number of louvers for hot air outlets.

  A conventional hot air heater such as an oil fan heater of this type has a structure as shown in FIG.

  FIG. 5 is a front view of the hot air heater, 51 is a main body case, in which a combustion chamber provided with a burner, a blower for taking in and sending out indoor air, and a duct are arranged, and from the burner on the front surface The combustion gas is mixed with room air in a duct to form hot air, and this hot air is discharged to the outside of the main body case 51, and a louver 52 that controls the flow of hot air to the hot air outlet 53. Is arranged.

  As described above, the number of louvers 52 is reduced from two to three to improve the design, and the louvers 52 are widened to clean the dust attached to the louvers 52. (For example, refer to Patent Document 1).

JP-A-8-226712

  However, in the conventional warm air heater, the warm air is efficiently discharged on the warm air outlet side of the louver 52, but the temperature distribution of the warm air blown from the combustion chamber side becomes uniform. Such a device was not applied, and the warm air was not easily released.

  In addition, the number of louvers 52 is reduced to improve the design, and the interval between the louvers 52 is increased to facilitate cleaning of dust attached to the louvers 52. However, if the interval between the louvers 52 is wide, the gap between the louvers 52 is increased. It is dangerous for human hands and objects to easily enter the body case 51.

  In addition, there is a problem that the strength is weak because the skeleton is only the louver 52 so as not to be deformed by an external force or the like with respect to the opening of the hot air outlet 53 in front of the main body.

  In order to solve the above-mentioned problems, according to claim 1 of the hot air heater of the present invention, a combustion chamber provided with a burner is disposed in the main body, and the heat generated by the burner is provided on the front surface of the main body by the hot air blower. In the warm air heater that discharges indoors through the warm air outlet, the louver is provided in three stages in the warm air outlet, and the dimension of the uppermost louver projecting to the combustion chamber side is shorter than other louvers. It is a thing.

  According to the second aspect of the present invention, a substantially triangular bar is provided between the upper and middle louvers and between the interrupted and lower louvers so as to be gradually narrowed toward the combustion chamber, so that the hand cannot easily enter the main body. This is a gap of a certain degree.

  According to the first aspect of the present invention, three louvers are provided in three stages at the hot air outlet, and the dimension of the uppermost louver projecting to the combustion chamber side is shorter than that of other louvers. Can be released evenly.

  Further, in claim 2, there is provided a bar having a substantially triangular cross section between the upper and middle louvers and between the interrupted and lower louvers in a direction gradually narrowing toward the combustion chamber side, so that a hand can be easily provided inside the main body. By making the gap so that it does not enter, it is possible to make it difficult for hands and objects to enter the inside of the main body, and by providing a bar with a substantially triangular cross section, the strength of the hot air outlet increases, Safety can be improved.

  Embodiments of the present invention will be described below with reference to FIGS.

  1 is a longitudinal sectional view of a hot air heater showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the front portion, FIG. 3 is a front view of the louver portion, and FIG. 4 is a side view of the louver portion. It is a longitudinal cross-sectional view.

  In the figure, reference numeral 1 denotes a main body of an oil fan heater which is a hot air heater, and 2 denotes a combustion chamber disposed in the main body 1, and a burner 4 is provided therein.

  Reference numeral 5 denotes a ventilation path, which is provided so as to cover the combustion chamber 2, and its upstream side is connected to the back opening 3 of the combustion chamber 2 and the suction port 6 opened to the back of the main body 1, and the downstream side is the main body 1. It is connected to a hot air outlet 8 provided at the lower part of the front surface.

  A hot air blower 7 is disposed inside the suction port 6, and the hot air blowing port 8 has a configuration in which a louver 9 is crimped to a louver base 11, and the louver 9 rectifies the warm air and blows it out into the room. I have to.

  The louver base 11 has a structure in which the louver base 11 is pressed against the blowing path 5, and separates the combustion chamber 2 side and the outside of the main body 1 so that warm air does not enter the main body 1.

  The louver 9 is composed of three louvers 9a, 9b, 9c arranged at the upper, middle and lower tiers of the hot air outlet 8, and the shape of each louver 9a, 9b, 9c rectifies the flow of the wind in the air blowing path 5 and efficiently. In order to be discharged, the uppermost louver 9a tilts the combustion chamber 2 side slightly upward from the horizontal, and the overhanging dimension L1 to the combustion chamber 2 side is the combustion chamber of the other middle and lower louvers 9b and 9c. It is shorter than the overhanging dimension L2 to the 2 side. The middle and lower louvers 9b and 9c are mounted horizontally, and the overhanging portion on the combustion chamber 2 side has a substantially slope shape upward. Further, the intervals between the louvers 9a, 9b, 9c are made uniform so as to improve the design, and the intervals are widened to facilitate cleaning of dust attached to the louvers 9.

  Reference numeral 10 denotes a bar which is cut and raised integrally with the louver base 11 and has a substantially triangular cross section and gradually becomes narrower toward the combustion chamber 2 side, and between the upper and middle louvers 9a and 9b. The bar 10a and the bar 10b are horizontally provided between the interrupted and lower louvers 9b and 9c, respectively. 2 to 4, the distance between the projecting portion of the middle and lower louvers 9b and 9c toward the combustion chamber 2 and the bars 10a and 10b is H1, and the fuselage of the upper and middle louvers 9a and 9b. The distance between the protruding portion to the outside and the bars 10a and 10b is H2. In this embodiment, the dimensions of H1 and H2 are 10 mm intervals, respectively, but if this is the gap, even if a hand is inserted into the gap between the louvers 9, it will not hit the bar 10 and enter the combustion chamber 2 side. Cleanability is also good.

  The present invention has the above configuration, and the operation thereof will be described next.

  When combustion is performed in the burner 4, the warm air blower 7 rotates, and the indoor air is taken into the blower path 5 from the suction port 6, and a part enters the combustion chamber 2 from the rear opening 3 of the combustion chamber 2. It mixes with the combustion exhaust gas in the combustion chamber 2, and another part reaches the hot air outlet 8 through the air blowing path 5 outside the combustion chamber 2, where both are mixed to become hot air and become the hot air outlet. 8 is rectified by the louver 9 and discharged into the room.

  At this time, the flow of the wind in the blower path 5 flows along the wall surfaces of the parts constituting the duct of the blower path 5, and is rectified and discharged from the hot air outlet 8 of the three louvers 9a, 9b, 9c. However, the projecting position of the uppermost louver 9a toward the combustion chamber 2 is a position where the wind flow is strong and the temperature of the warm air is low, and the projecting dimension L1 so as to reduce the resistance of the wind flow in this portion. Since the wind speed is weakened and the amount of air is reduced, the flow of high-temperature combustion exhaust gas from the combustion chamber 2 is guided to smoothly flow from the blower path 5 to the hot air outlet 8. Thus, the warm air is uniformly discharged from the entire louver 9.

  Further, since the bars 10a and 10b between the louvers 9a and 9b and between the louvers 9b and 9c have a substantially triangular cross section that gradually becomes narrower toward the combustion chamber 2, the hot air blowing outlet 8 It is considered not to interfere with the exhaust of warm air.

  As described above, the louver 9a, 9b, 9c is provided in three stages at the hot air outlet 8, and the size of the uppermost louver 9a projecting toward the combustion chamber 2 is larger than that of the other louvers 9b, 9c. By shortening, the warm air can be discharged evenly.

  Bars 10a and 10b having a substantially triangular cross section are provided between the upper and middle louvers 9a and 9b and between the interrupted and lower louvers 9b and 9c. By providing a gap that does not allow a hand to easily enter the interior, it is possible to make it difficult for hands and objects to enter the interior of the main body 1, and by providing a bar with a substantially triangular cross section, The strength of the outlet 8 is increased, and the safety can be improved.

  In the above embodiment, the shape of the uppermost louver 9a is attached by inclining the combustion chamber 2 side slightly upward from the horizontal, the middle and lower louvers 9b, 9c are attached horizontally, and the overhanging portion on the combustion chamber 2 side is Although it is made into the substantially slope shape toward the upper direction, what is necessary is just to make these shapes into the shape from which the warm air discharged | emitted is discharged | emitted equally by the structure of the ventilation path 5, arrangement | positioning of the combustion chamber 2, etc. FIG.

It is a side longitudinal cross-sectional view of the warm air heater which shows one Example of this invention. It is the longitudinal cross-sectional view of a front part similarly. It is a front view of a louver part similarly. It is side surface sectional drawing of a louver part similarly. It is a front view which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Combustion chamber 4 Burner 5 Air supply path 7 Hot air blower 8 Hot air blowout port 9a, 9b, 9c Louver 10a, 10b Bar

Claims (2)

A combustion chamber (2) provided with a burner (4) is disposed in the main body (1), and the heat generated by the burner (4) is heated by a hot air blower (7) on the front surface of the main body (1). In the warm air heater that discharges indoors through the air blowing port (8), the warm air blowing port (8) is provided with three louvers (9a), (9b), (9c), of which the uppermost louver A hot air heater characterized in that the dimension of (9a) projecting to the combustion chamber (2) side is shorter than the other louvers (9b) and (9c). A bar having a substantially triangular cross section in a direction gradually narrowing toward the combustion chamber (2) between the upper and middle louvers (9a) and (9b) and between the interruption and lower louvers (9b) and (9c). The hot air heater according to claim 1, wherein (10a) and (10b) are provided so that a gap is formed so that a hand cannot easily enter the inside of the main body (1).

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