JP2000193319A - Heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recognize a combustion flame surely with eyes even when the combustion quantity is low. SOLUTION: A heater comprises a heat exchanger 23 for passing the air heated by a burner 24 disposed in a body cabinet 20 and radiates combustion heat from the front side thereof. Front face of the box type heat exchanger 23 is disposed in front of the body cabinet 20, a burner 24 is mounted on the back of the heat exchanger 23 and an inspection window 32 is made in the front face of the heat exchanger 23 oppositely to the burner 24. Since a combustion flame A generated from the burner 24 is ejected toward the inspection window 32 made in the front face of the heat exchanger 23, the combustion flame A can be recognized surely with eyes even when the combustion quantity is low.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater for radiating radiant heat from the front of a main body cabinet to heat a room.

[0002]

2. Description of the Related Art Conventionally, as a heater of this type, a heater disclosed in Japanese Utility Model Publication No. 6-48243 shown in FIGS. 12 and 13 is known.

In this heater, a combustion tube 12 made of heat-resistant glass having a burner 11 installed at the lower portion is installed at the center of a main body cabinet 10, while a skeleton 13 is installed inside the combustion tube 12. A reflection plate 14 is provided on the back side, and the radiant heat of the combustion tube 12 is radiated toward the front side of the heater.

The exhaust gas generated in the combustion tube 12 flows through a heat exchanger 15 and a heat exchanger 16 for floor heating (hereinafter referred to as a floor warming heat exchanger) 16 through the heat exchanger 15 (solid line in FIG. 13). Arrow). Thus, while heating the room by the combustion tube 12 and the like, the heating medium of the radiator for warming the floor 17 is heated by the floor heat exchanger 16 to perform the floor heating.

[0005]

By the way, visually confirming the combustion flame in the heater is necessary not only for ensuring safe combustion but also for adjusting the amount of combustion, and further, it is necessary to provide the user with warmth. It is also important in terms of the feeling, that is, the feeling of heating for the user.

However, in the above-described conventional heater, the burner 11 is installed vertically below the combustion cylinder 12 so that the combustion flame generated by the burner 11 is visually recognized from the side. Therefore, when the amount of combustion is small, the length of the combustion flame is extremely short, making it difficult to visually recognize the flame. In addition, the skeleton glows red due to the combustion flame, and the combustion state can be visually recognized through the skeleton. However, when the amount of combustion is small, the skeleton also has a small amount of red heat and the combustion flame cannot be reliably recognized. Had problems.

An object of the present invention is to provide a heater capable of surely visually confirming a combustion flame even with a small amount of combustion in view of the above-mentioned conventional problems.

[0008]

According to the present invention, a heat exchanger through which air heated by a burner passes is disposed in a main body cabinet, and a front face of the main body cabinet is provided. In a heater that radiates combustion heat from the heat exchanger, the front of the box-shaped heat exchanger is placed on the front of the main cabinet, and a burner is installed on the back of the heat exchanger, facing the burner on the front of the heat exchanger. It has a structure with a viewing window.

According to the first aspect of the present invention, the combustion flame generated by the burner is blown out toward the viewing window provided on the front of the heat exchanger, so that even if the combustion amount is small, the combustion is surely performed. You can see the fire.

The viewing window according to the second and third aspects of the present invention is formed of a heat-resistant glass plate having irregularities.
The light of the combustion flame is irregularly reflected by these irregularities, forming a light pattern based on the irregularities.

According to a fourth aspect of the present invention, the viewing window is formed of a heat-resistant glass plate and has a first window portion having irregularities.
It has a second window formed in a plane, and each window is vertically arranged on the front surface of the heat exchanger. According to the invention of claim 4, a light pattern is formed in the first window portion,
Further, the combustion flame can be directly visually recognized in the second window.

The viewing window according to a fifth aspect of the present invention comprises a first window portion formed of a heat-resistant glass plate and a second window portion having irregularities formed larger than the first window portion. Is installed in front of the heat exchanger, and the second window is installed at an interval in front of the first window. The viewing windows according to Claims 2 and 3 are all formed of heat-resistant glass plates, which is costly. However, in the invention of Claim 5, only the first window provided in the heat exchanger is used. What is necessary is just to form with a heat resistant glass plate, and cost becomes cheap.

[0013]

1 to 3 show a first embodiment of a heater according to the present invention. FIG. 1 is a perspective view of the heater, FIG. 2 is a front view of the heater, and FIG. It is a side surface schematic structure figure of a heater.

As shown in FIGS. 1 and 2, this heater has a flat box-shaped main body cabinet (hereinafter, referred to as a cabinet) 20 as a whole, and is arranged such that the wide surfaces of the cabinet 20 are located in front and rear. Have been. An opening 20b for a heat exchanger to be described later is formed in a front panel 20a of the cabinet 20, and an operation panel 21 for driving operation and a wire guard 22 for preventing contact with fingers and the like are provided. Further, the upper plate 20c of the cabinet 20
Are formed with a plurality of slits 20d.

Next, the device components installed inside the cabinet 20 will be described. That is, the heat exchanger 23 is installed on the front side of the cabinet 20. The heat exchanger 23 has a flat box shape with a small front-rear width, and the wide front surface of the heat exchanger 23 faces the room through the opening 20 b of the cabinet 20.

A burner 24 having a flame detecting rod 24a and a combustion blower 2
5 is installed, and the electromagnetic pump 26
The combustion oil is supplied from the burner 24, and the combustion air and the combustion oil sucked through the air introduction passage 27 eject the combustion flame A from the burner 24 toward the inside of the heat exchanger 23. ing. The combustion gas generated by the burner 24 is switched by a damper 28, flows to an exhaust passage 29 or a floor warming heat exchanger 30, and is exhausted outdoors.

A view window 32 of heat-resistant glass held by a frame 31 is fitted near the lower front of the heat exchanger 23. The viewing window 32 is arranged at a position facing the burner 24.

According to the heater according to the present embodiment, the burner 24 is installed on the back of the heat exchanger 23, and the viewing window 32 is arranged on the front of the heat exchanger 23 so as to face the burner 24. As shown in FIG. 2, the combustion flame A generated by the burner 24 can be visually recognized from directly in front and obliquely from above. Therefore, even if the combustion amount is slight, the user can surely visually recognize the combustion flame A.

FIGS. 4 and 5 show a second embodiment of the heater according to the present invention.
1 shows an embodiment. The second embodiment is an improvement of the configuration of the viewing window. That is, the viewing window 3
Reference numeral 3 denotes a structure in which a corrugated surface is formed on the front surface so that irregularities extend in the vertical direction. According to this embodiment, as shown in FIG. 4, a vertical light pattern is formed along the vertical unevenness, and the spread in the horizontal direction is increased by the reflection of light. Here, the combustion flame A is blue and the flame detection rod 24a
Is red by heating, so that the flame detection rod 24
A red vertical light pattern is formed on the irregularities on the a side, and a blue light pattern is formed on the other portions. As described above, the heater according to the present embodiment is excellent in the visibility and the feeling of heating by the viewing window 33. Note that a flat portion having no unevenness may be provided in a part of the viewing window 33, and the combustion flame A may be directly visually recognized from the flat portion. Other configurations and operations are the same as those of the first embodiment.

FIGS. 6 to 8 show a third embodiment of the heater according to the present invention.
1 shows an embodiment. As shown in FIGS. 7 and 8, the viewing window 34 according to the third embodiment has a first window portion 35 formed with a corrugated surface so that the unevenness extends in the vertical direction, and the unevenness extends in the horizontal direction. Second window portion 3 having a corrugated surface formed
6, and has a structure in which these windows 35 and 36 are overlapped in front and back and held by a frame 37. According to this embodiment, as shown in FIG. 6, a light pattern having a grid pattern is formed by vertical and horizontal irregularities. Other configurations and operations are the same as those of the first embodiment.

FIG. 9 shows a fourth embodiment of a heater according to the present invention. Viewing window 3 according to the fourth embodiment
8 has a first window 39 having a large area and a second window 40 having a small area. The first window 39 is formed of a heat-resistant glass plate having irregularities in the vertical and horizontal directions, and is disposed on the front surface of the heat exchanger 23 so as to substantially face the burner 24. On the other hand, the second window portion 40 is formed of a flat heat-resistant glass plate having no irregularities, and is disposed on the front surface of the heat exchanger 23 so as to face the upper portion of the burner 24.

According to this embodiment, the combustion flame A can be visually recognized directly from the second window 40, and a light pattern can be formed from the first window 39. Other configurations and operations are the same as those of the first embodiment.

FIG. 10 shows a fifth embodiment of the heater according to the present invention. The viewing window 41 according to the fifth embodiment includes a first window 42 having a small area and a second window 42 having a large area.
The window 43 is provided. The first window 42 is formed of a flat heat-resistant glass plate having no irregularities, and is arranged on the front surface of the heat exchanger 23 facing the burner 24. On the other hand, the second window 4
Reference numeral 3 denotes a regular (not particularly heat-resistant) glass plate having projections and depressions, and is disposed in front of the first window 42 at an interval therefrom.

According to this embodiment, the light of the combustion flame A and the red light generated from the flame detection rod 24a are supplied to the first window 42.
And a light pattern is formed at the second window 43. Further, since the second window 42 is separated from the heat exchanger 24, there is no need to have special heat resistance, and the cost is reduced.

FIG. 11 shows a sixth embodiment of the heater according to the present invention. The heater according to the sixth embodiment is obtained by improving the overall structure of the heater according to each of the above-described embodiments, and a viewing window 55 according to the present embodiment described later is a viewing window 32, 33 according to each of the above-described embodiments. And so on.

That is, as shown in FIG. 11, the heater of the present embodiment has a flat box-shaped cabinet 50 as a whole,
As in the above embodiments, the cabinet 50 is arranged such that the wide surfaces of the cabinet 50 are located in front and rear. An opening 51 for a heat exchanger is formed on the front side of the cabinet 50, and a wire guard 52 for preventing contact with a finger or the like is provided.

Next, the device components installed inside the cabinet 50 will be described. That is, the heat exchanger 53 is installed on the front side of the cabinet 50. The heat exchanger 53 has a flat box shape with a small front and rear width (width in the front and rear direction: 60 mm) as in the above-described embodiments. It is arranged so as to face the room through the opening 51 of the cabinet 50. A viewing window 55 made of heat-resistant glass is provided on the front panel 54.

This heat exchanger 53 is, as shown in FIG.
A mounting hole 56 swelling rearward is formed near the lower part of the rear surface, and a burner 57 and a combustion blower 58 are formed in the mounting hole 56.
Is installed. An exhaust gas outlet 59 is formed on the upper back surface of the heat exchanger 53, and the exhaust gas passes through the auxiliary heat exchanger 60 through the exhaust gas outlet 59 and is exhausted through the exhaust pipe 61.

Here, the burner 57 and the combustion blower 58
Are integrally attached to the back of the heat exchanger 53 to form a unit, and the width of this unit in the front-rear direction is 197.
mm, and the width dimension in the front-rear direction including the cabinet 50 is 295 mm.

As described above, the installation space of the heater (heating output: 6,000 kcal / h) according to the present embodiment is as follows.
12 and 1 in FIG.
In the conventional heater shown in FIG. 3 (the heating output is the same as that of the heater according to the present embodiment), the width in the front-rear direction is 425 mm. Therefore, when comparing the width in the front-rear direction, the heater according to the present embodiment is about 30% thinner.

[0031]

As described above, according to the first aspect of the present invention, the combustion flame generated by the burner blows out toward the viewing window provided at the front of the heat exchanger. Even if it is slight, the combustion flame can be visually confirmed.

When the viewing window is formed of a glass plate having projections and depressions, the light of the combustion flame is irregularly reflected by the projections and depressions, and a light pattern based on the projections and depressions is formed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a heater according to a first embodiment.

FIG. 2 is a front view of the heater according to the first embodiment.

FIG. 3 is a schematic side view of a heater according to the first embodiment.

FIG. 4 is a front view showing a viewing window of a heater according to a second embodiment.

FIG. 5 is a sectional view showing a viewing window of a heater according to a second embodiment.

FIG. 6 is a front view showing a viewing window of a heater according to a third embodiment.

FIG. 7 shows a first window and a second window of the heater according to the third embodiment.
Front view showing window

FIG. 8 is a sectional view showing a viewing window of a heater according to a third embodiment.

FIG. 9 is a schematic configuration diagram in which a part of a side surface of a heater according to a fourth embodiment is omitted.

FIG. 10 is a schematic configuration diagram in which a part of a side surface of a heater according to a fifth embodiment is omitted.

FIG. 11 is a schematic side view of a heater according to a sixth embodiment.

FIG. 12 is a front view of a conventional heater.

FIG. 13 is a schematic rear view of a conventional heater.

[Explanation of symbols]

20, 50: Main body cabinet, 53, 23: Heat exchanger, 24: Burner, 32, 33, 34, 38, 41, 5
5 ... Viewing window, A: Burning flame.

Claims (5)

[Claims] 1. A radiant heater for arranging a heat exchanger through which air heated by a burner passes in a main body cabinet and radiating combustion heat from a front surface of the main body cabinet, wherein the heat exchanger has a box shape. A front surface is arranged on the front surface of the main body cabinet, the burner is installed on the back surface of the heat exchanger, and a view window is installed on the front surface of the heat exchanger so as to face the burner. heater. 2. The heater according to claim 1, wherein the viewing window is formed of a heat-resistant glass plate having at least a part of unevenness. 3. The heater according to claim 2, wherein the unevenness of the viewing window is formed in a wavy shape in at least one of a vertical direction and a horizontal direction. 4. The view window is formed of a heat-resistant glass plate and includes a first window portion having irregularities and a second window portion formed in a plane, and each window portion is provided on the front surface of the heat exchanger. 2. The heater according to claim 1, wherein the heater is arranged vertically. 5. The view window includes a first window portion formed of a heat-resistant glass plate and a second window portion having irregularities formed to be larger than the first window portion. 2. The heater according to claim 1, wherein the heater is installed in front of a vessel, and the second window is installed at a distance in front of the first window.