JP4337525B2 - Hot air heater louver structure - Google Patents

Description

  The present invention relates to a structure of a louver attached to a hot air outlet of a hot air heater.

  The hot air heater has a heat source and air passage inside the frame body, and air is blown into the air passage by a convection fan attached to the back of the frame body. Is heated by mixing the hot combustion gas sent to the air passage with the room air and blowing it out from the hot air outlet on the front of the frame. And the louver which changes the blowing direction of a warm air is attached to the warm air blower outlet, and warm air blows off ahead of a frame, and reaches the place away from the heater.

  The louver is resistant to the flow of hot air, and recently, by devising the shape of the louver, even if the number of louvers is reduced, the hot air can reach far. If the number of louvers is reduced, the louver interval becomes wider, and articles may be inserted into the air passage from the louver interval due to child mischief and the like, causing problems such as fires and malfunctions.

For this reason, a guard is provided at the hot air outlet so as to face the louver, and when the article is inserted from the interval of the louver, the guard prevents the article from entering the air passage (patent document) 1).
Japanese Examined Patent Publication No. 63-4100

  Conventional guards are composed of wires and plates that are long or horizontally long to match the width of the hot air outlet, so they tend to bend near the center, and when the guard is pressed hard, the space is widened and articles are blown away. There is a risk of reaching inside. For this reason, it is conceivable to use a wire with a large diameter, a plate with a thickness or width, or increase the number of wires or plates constituting the guard, but with such a guard, the warm air blown from the hot air outlet There is a problem that the resistance to the flow of air increases and it becomes difficult for hot air to reach far.

  In addition, a large number of wire materials and plate materials are required to configure the guard, and there are also many components such as a mounting structure between the guard and the hot air outlet and parts such as screws for fixing the guard. The assembly process has also increased, causing cost increases.

  Recently, there is a tendency to prefer a heater with a compact frame shape. However, since the guard is generally disposed between the louver and the heat source so as not to impair the appearance of the hot air heater, If the distance between the louver and the heat source is shortened to make the body compact, it is difficult to attach the guard.

The present invention solves the above-described problem. A warm air outlet 2 is provided on the front surface of the frame body 1, an indoor air intake port 3 is provided on the back surface of the frame body 1, and a convection fan 4 is provided near the indoor air intake port 3. The air flow path 5 that connects the hot air outlet 2 and the indoor air intake port 3 is provided in the frame body 1, and the room air blown into the air flow path 5 by the convection fan 4 becomes a high temperature. The air blower 5 is located between the louver 6 and the louver 6, which blows into the room from the hot air outlet 2 on the front surface and determines the direction of the warm air to be blown out to the hot air outlet 2 in a predetermined height direction. In the hot air heater equipped with a guard 7 for preventing intrusion of articles into the inside, the guard 7 is constituted by a plurality of protrusions 6a formed continuously from the rear side end of the louver 6 , and the protrusions 6a is bent so that the tip is facing upward, and a twist is added near the base. Characterized in that the shape was.

As described above, the protrusion 6a is formed continuously from the end portion on the back side of the louver 6 and is bent so that the tip is directed upward, and is twisted in the vicinity of the root. It has a certain shape and does not easily deform even when pressed with a strong force.

  In the present invention for solving the above problems, a plurality of protrusions 6a are formed at the rear portion of the louver 6 and the protrusions 6a are positioned within the interval between the louvers 6 attached to the hot air outlet 2 to constitute the guard 7. Since the protrusions 6a constituting the guard 7 are small in shape, the strength can be made uniform, and the guard 7 is not easily deformed even if an article is inserted from the interval of the louver 6. It has become possible to prevent the entry of articles into the interior.

  Further, since the protrusion 6a is formed of a bent piece formed continuously from the rear side end of the louver 6, the protrusion 6a can be configured as the guard 7 simply by attaching the louver 6 to the hot air outlet 2, and the conventional guard 7 Since the parts such as screws that are necessary when the parts are constructed as separate parts are not required, the guard 7 can be constructed even when the space between the air passage 5 and the louver 6 is narrow and it is difficult to install the parts. The number of points and assembly process can be greatly reduced, and the manufacturing cost can be reduced.

  Further, the protrusion 6a can be formed into a strong shape by adding a twist in the vicinity of the root, and the protrusion 6a is not easily deformed even when pressed with a strong force. Intrusion can be reliably prevented.

  The present invention will be described with reference to an embodiment of a heater using petroleum fuel shown in the figure. 1 is a frame of the heater, 8 is a burner disposed in the frame 1, and 9 is disposed above the burner 8 and is a combustion flame. And a combustion chamber to which combustion gas is sent. 2 is a warm air outlet provided on the front surface of the frame 1, 3 is an indoor air inlet provided on the back of the frame 1, and 5 is a hot air outlet 2 and an indoor air inlet 3 formed in the frame 1. A communicating air passage 4 is a convection fan attached near the indoor air intake 3 on the inlet side of the air passage 5.

  The oil heater according to the embodiment is a type that discharges combustion exhaust gas called a fan heater into the room, and a part of the burner 8 and the combustion chamber 9 are arranged in the air passage 5, and air is blown by the convection fan 4. The indoor air sent into the passage 5 and the combustion exhaust gas discharged from the combustion chamber 9 are mixed in the blower passage 5 and blown out as hot air from the hot air outlet 2 on the front surface of the frame 1. It is.

  Reference numeral 6 denotes a louver that is configured to be long across the entire width of the hot air outlet 2. The indoor air sent by the convection fan 4 is heated by heat radiation from the combustion chamber 9, and the combustion exhaust gas and the combustion air are mixed. The air is blown out from the hot air outlet 2 and is directed by the louver 6 so that the hot air reaches far. A guard 7 is provided at the hot air outlet 2 so as to face the louver 6, and prevents articles from entering the air passage 5 from the interval of the louvers 6 arranged at a constant interval in the hot air outlet 2. .

  In the present invention, the louver 6 and the guard 7 are improved to reduce the size and cost of the heater and to improve safety. 6a is a plurality of louvers 6 provided at the end on the back side. The protrusion 6 a protrudes upward from the louver 6, and the upper end reaches the vicinity of the lower surface of the louver 6 disposed at the upper part. The protrusion 6 a located within the interval between the louvers 6 constitutes the guard 7. Therefore, the protrusion 6a located within the interval between the louvers 6 can prevent the article from entering the air passage 5.

  Since the conventional guard 7 is composed of a wire or plate material that is long and long in accordance with the width of the hot air outlet 2, it tends to bend near the center, and when an article is inserted from the center of the guard 7 There was a concern that the distance between the guards 7 would widen and the article would reach the air passage 5, but in this invention, the projections 6a having a small shape have uniform strength, and the guards 7 are formed by the projections 6a. Even if the projection 6a is pushed when trying to insert an article from the interval of the louver 6, it is not easily deformed, and the entry of the article into the air passage 5 can be reliably prevented regardless of the position where the article is inserted. It became possible.

  Further, by providing the protrusion 6a on the louver 6 and integrally configuring the louver 6 and the guard 7, it is only necessary to provide the warm air outlet 2 with a mounting structure for the louver 6, and the guard 7 mounting structure, screws, etc. No parts are required, and the guard 7 can be easily configured even with a heater having a short distance between the louver 6 and the combustion chamber 9 by making the frame 1 compact.

  In another embodiment of the present invention, the protrusion 6a is formed continuously from the rear end of the louver 6, bent so that the tip of the protrusion 6a faces upward, and has a shape with a twist near the root. Since the side end faces in the front-rear direction by adding a twist to the protrusion 6a, the portion extending within the interval between the louvers 6 of the protrusion 6a can be formed so as to follow the flow of hot air. The resistance of the protrusion 6a to the flow of the air can be reduced, and the flow of the hot air is not hindered.

  Furthermore, since the protrusion 6a has a strong shape due to the twist, the protrusion 6a is less likely to be deformed even if it is pressed with a strong force, and the entry of articles into the air passage 5 can be reliably prevented. It was possible to improve safety.

  In addition, since the bending and twisting of the protrusion 6a of the louver 6 can be easily manufactured by press working, when the guard 7 is configured as a separate part, the member for configuring the guard 7 and the guard 7 are connected to the hot air outlet 2. In the present invention, the louver 6 has only to be attached to the hot air outlet 2, so that there are few components, the assembly process can be greatly reduced, and the cost can be reduced. It became possible.

  The embodiment shown in the figure is a pot type oil combustor for burning petroleum fuel. However, since the present invention is related to the structure of the hot air outlet 2, the type of the burner is not particularly problematic, and the city gas It can also be applied to a combustor that burns gas fuel such as gas fuel or petroleum fuel by applying heat in the vaporization chamber to gas.

It is sectional drawing of the warm air heater which shows the Example of this invention. It is a front view of the warm air heater which shows the Example of this invention. It is sectional drawing of the principal part of the warm air heater which shows the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Warm air blower outlet 3 Indoor air intake 4 Convection fan 5 Air supply path 6 Louver 6a Protrusion 7 Guard

Claims (1)

A hot air outlet 2 is provided on the front surface of the frame 1, an indoor air inlet 3 is provided on the back of the frame 1, a convection fan 4 is attached in the vicinity of the indoor air inlet 3, and the hot air outlet 2 and the indoor air inlet are 3 is provided in the frame 1, and the indoor air blown into the blower path 5 by the convection fan 4 becomes hot and blows out into the room from the hot air outlet 2 on the front surface of the frame 1. ,
A louver 6 that determines the direction of hot air to be blown out at a predetermined height direction at the hot air outlet 2;
In the hot air heater mounted with a guard 7 located between the louvers 6 and preventing articles from entering the air passage 5,
The guard 7 is composed of a plurality of protrusions 6a formed continuously from the rear end of the louver 6 , and the protrusion 6a is bent so that the tip is directed upward and is twisted near the root. louver structure of the warm air heater, characterized in that the the.

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