JP4579219B2 - Fireplace heater - Google Patents

Description

  The present invention relates to a fireplace-type heater that includes a combustion housing that can be visually observed from the front surface of the heater body in the heater main body, and that contains a simulated firewood located above a burner in the combustion housing.

  Conventionally, this type of fireplace-type heater is generally configured to be a forced exhaust type in which the combustion exhaust gas in the combustion housing is discharged outdoors by an exhaust fan, and an infrared burner that performs primary combustion as a burner is used. (For example, refer to Patent Document 1).

  In addition, the infrared burner has a short flame length and cannot give a visual impression that the flame rises from the false flame. On the other hand, if a burner that burns Bunsen (combustion method using primary air and secondary air as combustion air) is used, the flame becomes larger and the visual impression that the flame rises from the false soot is good Can be given to.

  However, when a burner that burns with Bunsen is used, CO is generated due to incomplete combustion when the flame of the burner touches the simulated soot. In the case of the forced exhaust type as described above, there is no particular problem even if CO is generated. However, in order to simplify the installation of the fireplace-type heater, it is necessary to reliably prevent the generation of CO when the exhaust gas is configured to be discharged from the hot air outlet opened in the heater body. Even in the case of the forced exhaust type, it is desirable that the flame of the burner does not touch the pseudo soot because the soot adheres to the pseudo soot due to incomplete combustion and impairs the appearance.

Therefore, when a burner that burns Bunsen is used, it is necessary to dispose a dummy soot at a fixed distance from the flame of the burner, and the heater must be enlarged. In order to avoid an increase in the size of the heater, the size of the flame must be reduced to sacrifice the heating capacity.
Japanese Utility Model Publication No. 5-36201

  In view of the above points, the present invention can prevent the occurrence of incomplete combustion due to the contact of a flame with a simulated soot without causing problems such as an increase in size and a sacrifice in heating capacity, even though the burner is burned. The problem is to provide a fireplace-type heater.

  In order to solve the above-described problems, the present invention includes a combustion housing in which the inside of the heater main body can be visually observed from the front surface of the heater main body, and a pseudo soot positioned above the burner is stored in the combustion housing. In the fireplace-type heater, where the burner burns with Bunsen, an opening is established on the surface of the pseudo-fired, which is located below the part of the pseudo-fired that may come into contact with the flame of the burner. In addition, an air passage for guiding a part of the air supplied into the combustion housing to the opening is formed.

  According to the present invention, a part of the air supplied into the combustion housing flows out from the opening through the air passage in the simulated soot. The portion of the dummy soot above the opening (the portion that may come into contact with the flame) is covered with an air layer rising from the opening, and incomplete combustion due to contact of the flame with this portion is prevented. Therefore, even if the artificial soot is installed so as to enter the flame formation region, incomplete combustion does not occur, and an increase in the size of the heater can be avoided without sacrificing the heating capacity.

  Further, in the present invention, the false ridge is formed hollow except for both ends in the longitudinal direction, and an inlet for allowing air to flow into the hollow portion of the false ridge at the bottom of the pseudo ridge is longer than the region where the pseudo ridge is formed. It is desirable that the air passage is formed in a wide range in the direction, and the air passage is constituted by a hollow portion of a pseudo ridge. According to this, the ventilation resistance of the air passage is reduced as much as possible, and a sufficient amount of air flowing to the opening through the air passage can be secured.

  Referring to FIG. 1, reference numeral 1 denotes a heater main body. In the heater main body 1, a lower burner 2, a combustion casing 3 positioned above the burner 2, and a hot air fan 4 positioned above the combustion casing 3 are arranged.

  A plurality of upper and lower air intakes 5 are opened on the rear surface of the main body 1 of the heater, and a hot air outlet 6 is opened on the upper part of the front surface. A louver 6a is attached to the hot air outlet 6 so that the direction of the hot air is directed downward, and an air filter (not shown) is attached to the outside of the rear surface of the heater body 1.

  Window portions 7 and 8 fitted with glass plates 7a and 8a are provided on the front surface of the heater body 1 and the front surface of the combustion housing 3 in order to make the inside of the combustion housing 3 visible. Then, a ceramic pseudo urn 9 is housed in the combustion housing 3 so that a fireplace-like feeling can be obtained. In the present embodiment, as shown in FIG. 2, a longitudinal holding frame 10 is provided in the lateral direction, and a pair of front and rear pseudo eaves 9 and 9 are attached to the front and rear of the holding frame 10 via holding claws 10a. Then, by fixing the holding frame 10 on the bottom surface of the combustion housing 3, the dummy rods 9 and 9 are accommodated in the combustion housing 3.

  The burner 2 is a plate-type burner including a combustion plate 2a having a large number of flame holes. The air-fuel mixture (mixed gas of fuel gas and primary air) supplied to the burner 2 has a fuel concentration higher than the stoichiometric air-fuel ratio. In addition, a secondary air restriction cylinder 2b that surrounds the space immediately above the combustion plate 2a is provided to prevent the air-fuel mixture from burning near the combustion plate 2a. Then, the air-fuel mixture is introduced into the space between the front and rear dummy rods 9 and 9 in the combustion housing 3 via the secondary air restriction cylinder 2b, and is brought along the front and rear of the secondary air restriction cylinder 2b on the bottom surface of the combustion housing 3. The air-fuel mixture is burned in the combustion housing 3 by supplying secondary air from the air supply unit 3a. Thereby, the flame F which stands | starts up from between the front and back artificial scissors 9 and 9 is produced | generated, and the visual impression that the pseudo scissor 9 is burning is given. The bottom surface of the combustion housing 3 is provided with an air supply portion 3a ′ for cooling air positioned in front of and behind the air supply portion 3a for secondary air.

  The hot air fan 4 includes a fan body 4a that is rotationally driven by a motor (not shown), and a fan casing 4b that houses the fan body 4a. The air outlet 4 c of the fan casing 4 b is connected to the hot air outlet 6, and the air inlet 4 d of the fan casing 4 b opens downward at a position above the combustion housing 3. The exhaust port 3b at the upper end of the combustion housing 3 faces the suction port 4d of the fan casing 4b.

  Further, the suction port 4d of the fan casing 4b not only opposes the exhaust port 3b but also extends forward and rearward. And the clearance gap between the glass plate 7a with which the front window part 7 of the heater main body 1 was mounted | worn, and the glass plate 8a with which the front window part 8 of the combustion housing 3 was mounted | worn from the upper end of the window part 7 of the suction inlet 4d It communicates with the front part of the suction port 4d through the air guide plate 11 reaching the front end. Further, a gap between the rear surface of the heater body 1 and the rear surface of the combustion housing 3 is communicated with the rear portion of the suction port 4d.

  When the fan main body 4 a of the hot air fan 4 is rotated, a part of the air flowing in from the air intake port 5 passes through a gap between the rear surface of the heater main body 1 and the rear surface of the combustion housing 3, and the hot air fan 4. Sucked into. Further, a part of the air flowing in from the air intake 5 flows into the lower space of the combustion housing 3, and a part of this air is sucked into the combustion housing 3 from the air supply portions 3 a and 3 a ′ on the bottom surface of the combustion housing 3. It is. Then, the air-fuel mixture is combusted in the combustion housing 3 by the secondary air sucked from the air supply section 3 a for secondary air, and the combustion exhaust gas flows from the exhaust port 3 b at the upper end of the combustion housing 3 to the hot air fan 4. Sucked into. Further, a part of the air that has entered the space below the combustion housing 3 includes a glass plate 7 a attached to the window portion 7 on the front surface of the heater body 1 and a glass plate 8 a attached to the window portion 8 on the front surface of the combustion housing 3. The air is sucked into the hot air fan 4 via a gap between the two. Then, the combustion exhaust gas and air are mixed and blown to the hot air outlet 6. In FIG. 1, the flow of air is indicated by white arrows, the flow of combustion exhaust gas is indicated by black arrows, and the flow of warm air after mixing air and combustion exhaust gas is separately painted in white and black Indicated by an arrow.

  By the way, the front and rear pseudo rods 9 have a halved shape, and the arcuate surface faces forward. And the node part 9a protrudes on the circular-arc-shaped surface, and it is made to feel like a real collar. Here, the rear dummy rod 9 is arranged so that the node portion 9a enters a flame region formed when air is not blown out from an opening 9b described later. In this state, the flame F touches the node portion 9a and incompletely burns, thereby generating CO or soot adhering to the pseudo soot 9.

  If the rear dummy rod 9 is arranged so as to be shifted rearward so that the node 9a does not enter the flame region, incomplete combustion due to the contact of the flame F with the dummy rod 9 can be prevented. However, in this case, it is necessary to increase the depth dimension of the combustion casing 3, and the heater becomes larger. In order to avoid an increase in the size of the heater, it is necessary to make the flame F small so that the flame F does not touch the pseudo-fired 9 and the heating capacity is sacrificed.

  Therefore, in the present embodiment, an opening 9b that is located on the lower side of the joint portion 9a, that is, the portion of the pseudo rod 9 that may come into contact with the flame F, is opened on the surface of the rear pseudo rod 9. Further, the rear pseudo ridge 9 is formed hollow except for both ends in the longitudinal direction, and an inlet 9d for allowing air to flow into the hollow portion 9c of the pseudo ridge 9 is formed at the bottom of the pseudo ridge 9 from the formation region of the opening 9b. Widely open in the longitudinal direction. An air supply portion 3a ′ for cooling air is widely opened at the rear rear portion of the combustion housing 3 so as to face the inlet 9d.

  According to this, the air that flows into the combustion housing 3 from the cooling air supply part 3a ′ at the rear of the bottom surface enters the air passage in the dummy rod 9 constituted by the hollow part 9c from the inlet 9d, and the hollow part It flows to the opening 9b on the surface of the pseudo ridge 9 through 9c. And the node part 9a of the pseudo ridge 9 is covered with the air layer which blows out from the opening 9b and rises, and the incomplete combustion by the contact of the flame F to the node part 9a is prevented. Thus, it is not necessary to increase the size of the heater or reduce the flame F to sacrifice the heating capacity.

  It is also possible to form an air passage in the pseudo cage 9 only in the longitudinal direction portion of the pseudo cage 9 that coincides with the formation region of the opening 9b. However, the ventilation resistance from the inflow port 9d to the opening 9b becomes smaller when the pseudo ridge 9 is formed in the hollow portion 9c as in the present embodiment and the bottom inflow port 9d is formed in a wider area than the formation region of the opening 9b. . Therefore, a sufficient amount of air flowing through the opening 9b can be secured, which is advantageous.

  Further, in the present embodiment, a tongue-shaped guide portion 9e extending inward from the upper edge of the opening 9b is provided on the pseudo ridge 9. According to this, the direction component which goes to the flame F is given to the airflow which blows off from the opening 9b, and the contact of the flame F to the dummy flame | frame 9 is prevented more effectively.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above-described embodiment, only the node portion 9a is likely to come into contact with the flame F of the rear dummy rod 9, but when there is a possibility that portions other than the node portion 9a may also come into contact with the flame F. In addition, an opening communicating with the hollow portion 9c may be formed on the lower side of this portion.

  In the above-described embodiment, the present invention is applied to a fireplace type heater that discharges combustion exhaust gas from the hot air outlet 6 established in the heater body 1. The combustion exhaust gas is discharged to the outdoors by an exhaust fan. The present invention can be similarly applied to a forced exhaust type fireplace type heater.

The cut side view of the fireplace type heater of embodiment of this invention. The perspective view of the dummy firewood used with the fireplace type heater of embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Heating machine main body, 2 ... Burner, 3 ... Combustion housing, 9 ... Simulated soot, 9a ... Node part (part which may touch a flame), 9b ... Opening, 9c ... Hollow part (air passage), 9d ... Inlet.

Claims (2)

A fireplace-type heater with a combustion housing that can be seen from the front of the heater body in the main body of the heater, and that contains a firewood that is located above the burner. In what to do
On the surface of the simulated soot, an opening located below the part of the pseudo soot that may come in contact with the flame of the burner is opened, and a part of the air supplied to the combustion housing is opened inside the pseudo soot A fireplace-type heater characterized in that a leading air passage is formed.   The pseudo ridge is formed hollow except for both ends in the longitudinal direction, and an inflow port for allowing air to flow into the pseudo ridge hollow portion is opened in a wide range in the longitudinal direction of the pseudo ridge from the formation region of the opening. The fireplace-type heater according to claim 1, wherein the air passage is configured by a hollow portion of a pseudo urn.

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