JPH05332537A - Burner - Google Patents

Abstract

PURPOSE:To simply know a burner having a malfunction and its content when any of a plurality of burners has a malfunction while coping with a large variation in a combustion load by one combustion apparatus. CONSTITUTION:A combustion apparatus has a plurality of burners, and comprises control means (microcomputer) 62 for selecting one or two or more of the plurality of burners and operating it, and a plurality of display units 73A, 37B for displaying a temperature, a time, etc. If any of the plurality of burners has a malfunction, the means 62 displays a content of the malfunction on the units 73A, 73B previously corresponding to the respective burners.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustor equipped with a combustion device, such as a radiant heater, a warm air heater, a water heater.

[0002]

2. Description of the Related Art In a combustion machine of this kind, for example, a heater,
As disclosed in Japanese Examined Patent Publication No. 3-45285,
The first liquid fuel combustion device having the vaporization heater is provided, and the burner is sufficiently heated by the vaporization heater, and then the liquid fuel is gasified and burned by the burner to start the heating operation.

[0003]

Particularly, in a cold region, the heating device is used for a long period of autumn, winter, and spring, and the heating load during that period changes greatly. However, since a single liquid fuel combustion device is built in the heating device, and it is difficult for a single liquid fuel combustion device to cope with such a change in heating load, a plurality of heating devices are used together. It was That is, a heating system equipped with a large liquid fuel combustion device is used in the severe winter season, and a small oil stove is used in the spring and autumn when the heating load is small, which is troublesome to use properly. ..

Of course, if a heating device provided with a plurality of liquid fuel combustion devices is used and these liquid fuel combustion devices are selected and started according to the size of the heating load, the above-mentioned problems are solved. However, if there is an abnormality in any of the plurality of liquid fuel combustion devices, there is a drawback that the abnormality display becomes very complicated.

The present invention has been made in view of the above-mentioned facts, and enables one combustor to cope with a large change in the combustion load, and when any of a plurality of combustion devices has an abnormality. The purpose is to make it easy to understand the abnormal combustion device and the details of the abnormality.

[0006]

According to the present invention, in a combustor provided with a plurality of combustion devices, a control means for selecting and operating one or more of the plurality of combustion devices, a temperature, A plurality of display units for displaying time, etc., and when the control means has an abnormality in any of the plurality of combustion devices, the content of the abnormality is displayed on the display unit corresponding to each combustion device in advance. It is configured.

Further, according to the present invention, in a combustor having a plurality of combustion devices, one or a plurality of the combustion devices are selected and operated, and temperature, time and the like are displayed. When the control means has an abnormality in any of the plurality of combustion devices, the control means is configured to cause the indicator to display the identification symbol of the abnormal combustion device and the content of the abnormality.

[0008]

According to this structure, not only one heating device can cope with a large fluctuation of the heating load, but also when any of a plurality of combustion devices has an abnormality, it is made to correspond to each combustion device in advance. Since the content of the abnormality is displayed on the display unit, it is possible to identify the abnormal combustion device and know the content of the abnormality without complicating the abnormality display.

The same is true of the second aspect, and when any of the plurality of combustion devices has an abnormality,
Since the identification symbol of the abnormal combustion device and the details of the abnormality are displayed on the display, it does not complicate the abnormality display,
It is possible to identify the abnormal combustion device and to know the details of the abnormality.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 2 to 4, reference numeral 1 denotes an outer case, and the outer case 1 includes a case body 1A including a top plate 2, a back plate 3, left and right side plates 4,5, left and right front plates 6, 7 and a bottom plate 8. The front panel 1B is detachably mounted between the front plates 6 and 7 of the case body 1A. A large opening 9 is formed substantially in the center of the front panel 1B, and a protective guard 10 for covering the opening 9 is arranged in the opening 9. The back plate 3, left and right side plates 4, 5 and left and right front plates 6,
7 is made by bending a single steel plate, a heat shield plate 11 is attached to the lower part of the top plate 2, and a display part is also provided on the upper part of the right front plate 7. The operation unit 12 is provided.

The protective guard 10 is composed of a large number of guard elements 10A, 10A ... Made of a metal wire and a large number of hollow cylindrical radiators 10B, 10B. Radiator 10B
Are arranged in the opening 9 alternately with a predetermined interval and with a large number of guard elements 10A in front of the radiator 10B.

A motor 1 is provided inside the outer case 1.
Burner blowers 15 and 16 capable of increasing / decreasing the supply air amount by varying the rotation speeds of 3 and 14, and a burner 1 for vaporizing and burning kerosene.
7, 18 and combustion cylinders 21, 22 made of a translucent material such as heat-resistant glass and having built-in red heating elements 19, 20;
A pair of liquid fuel combustors (hereinafter simply referred to as combustors) A and B, in which the heat exchangers 23 and 24 and the exhaust hoods 25 and 26 are sequentially coupled in that order in the vertical direction, are arranged at a predetermined interval. It is set up. The pair of combustion devices A and B includes a support base 27 that is integrally incorporated in the burner blowers 15 and 16.
By mounting 28 on the bottom plate 8, the outer casing 1 is stably held in an upright state, and the combustion cylinders 21 and 22 and the heat exchangers 23 and 24 are opposed to the opening 9. (See FIGS. 2 and 4).

Reference numeral 29 is a vertical reflector that surrounds the outer periphery of the combustion devices A and B excluding the opening 9. Reference numeral 30 is a horizontal reflector having a substantially L-shaped cross section provided in the lower portion of the outer case 1. Back plate 3 corresponding to each of the pair of heat exchangers 23, 24
Is a pair of warm air blowers arranged above the vertical reflectors 29 and 32, and the vertical reflector 29 is provided with a notch 33 at an appropriate position.
The upper ends of the burners 17 and 18 are passed through.

The burners 17 and 18 are the burner case 3
4, 35 and vaporization cylinders 38, 39 having vaporization electric heaters 36, 37 housed in the burner cases 34, 35.
And ceramic burner heads 40 and 41 provided in the vaporization tubes 38 and 39, and burner heads 40 and 41.
The fuel atomizers 42, 43, etc., which are provided in the vaporization cylinders 38, 39 on the upstream side of, and are driven by the motors 13, 14 of the burner fans 15, 16 are constituted. The calorific values of these burners 17, 18 are proportionally variable, and the maximum calorific value is about 3,250 k.
A common one is used in which the minimum calorific value is set to about 890 kcal / h for cal / h. Also, these burners 1
In addition to 7, 18, the burner blowers 15, 16, the combustion tubes 21, 22 and the heat exchangers 23, 24 are also used as common parts in the pair of combustion devices A, B.

44 and 45 are bottom plates 8 of the case body 1A.
A pair of oil levelers arranged above. The oil levelers 44 and 45 store kerosene to be supplied to the burners 17 and 18 via fuel pumps 46 and 47 and fuel supply pipes 48 and 49, and the outer case 1 Kerosene is replenished by an oil supply pipe (not shown) that branches off in the middle.

As shown in FIG. 3, 50 is a wall X such as a chamber wall.
Is an air supply / exhaust pipe in which the air supply / exhaust part 50A on the front end side is exposed to the outside through the air supply pipe 50 and the air supply / exhaust pipe connection part 50B on the base end side of the air supply / exhaust pipe 50. One end is connected. The air supply pipe 51 is bifurcated outside the outer case 1, and the tips of the branch air supply pipes 54 and 55 on the downstream side of the branch portion 53 are connected to the burner blowers 15 and 16, while the exhaust gas is exhausted. The other ends of the substantially L-shaped exhaust branch pipes 56 and 57, one ends of which are respectively connected to the hoods 25 and 26, merge into the inside of the outer case 1, and the merged portion 58 is connected to the other end of the exhaust pipe 52. I am doing it. That is, the pair of combustion devices A and B described above are configured to supply and exhaust air using the common air supply / exhaust cylinder 50, air supply pipe 51, and exhaust pipe 52. Reference numerals 59 and 60 denote control boards arranged in the spaces on the left and right sides inside the case body 1A, respectively, and 61 denotes a back guard provided at the back of the outer case 1.

A control device S is mounted on the control boards 59 and 60, as shown in FIG. 62 is a control board 60
Is a microcomputer (hereinafter referred to as a microcomputer) mounted on the computer, and the operation switch 6 is provided on the input side of the microcomputer 62.
3, temperature setter 64, room temperature sensor 65, burners 17, 1
The burner temperature sensors 66 and 67 for detecting the temperatures of the vaporization cylinders 38 and 39 of No. 8, the flame detectors 68 and 69, and the control mode selection switch 70 are connected.

A burner 1 is provided on the output side of the microcomputer 62.
Vaporization electric heaters 36, 3 for heating the vaporization parts of 7, 18
7, igniters 71, 72, burner blowers 15, 16, fuel pumps 46, 47, warm air blowers 31, 32, digital display 73 for displaying room temperature or set temperature, and a control mode display including a plurality of display lamps Device 74 is connected. The operation switch 63, the temperature setting device 64, the control mode selection switch 70, the digital display 73, and the control mode display 74 are provided in the operation unit 12.

In the control device S described above, one of the two control boards 59 and 60, on which the microcomputer 62 is mounted, is used as a main control board, and in addition to the microcomputer 62, a relay and other components. An electric circuit component (neither is shown) is mounted, and the other control board 60 is connected by a signal line 75. The control board 60 used as a relay control board has a burner temperature sensor 67, a flame detector 69, a vaporization electric heater 37, an igniter 72, and a burner blower 1 of the combustion apparatus B close to the control board 60.
6 and the hot air blower 32 are connected to a connector, and the burner temperature sensor 66 of the combustion apparatus A, the flame detector 68, the vaporization electric heater 36, the igniter 71, the burner blower 15, the fuel pump 46, and the fuel pump. 47, blower 3 for warm air
1, the digital display 73 and the control mode display 74 are directly connected to the control board 59 by connectors. This is to connect the combustion devices A and B arranged on the left and right, and the hot air blowers 31 and 32, and the control boards 59 and 60 with common lead wires as much as possible to achieve commonalization of parts and the nearest This is because the use of the control board eliminates misconnection of the connector.

The microcomputer 62 sets the control mode as follows each time the control mode selection switch 70 is operated once. That is, as shown in FIG. 5, the automatic control mode is initialized, and every time the control mode selection switch 70 is operated once, the automatic control mode, the strong control mode, the weak control mode, and the automatic control mode are selected. The control mode is set in order.

In the above structure, when the operation switch 63 is turned on with the automatic control mode set,
As shown in FIGS. 6 and 7, the electric heater 36 of the right burner 17 is energized, the energization of the electric heater 36 heats the vaporization cylinder 38, and the fact that the vaporization cylinder 38 has reached a predetermined temperature is indicated by the burner temperature. When detected by the sensor 66, both burner blowers 15 and 16 are driven to perform pre-purge for a predetermined time, and the fuel pump 46 on the right side is first operated. By starting the operation of the fuel pump 46, the oil leveler 44
Kerosene is ejected through the fuel supply pipe 48 toward the lower surface of the rotating fuel atomization device 42, and the kerosene scattered by the centrifugal force of the fuel atomization device 42 hits the inner wall of the vaporization cylinder 38 and is vaporized. To do. This vaporized gas is supplied to the air supply / exhaust pipe 50 and the air supply pipe 5.
After being premixed with the combustion air sent from the burner blower 15 to the vaporization tube 38 through the 1 and branch air supply pipes 54, it is jetted upward from the burner head 40, ignited by the igniter 71, and burned on the burner head 40. A flame F is formed on the
Thus, the combustion device A on the right side has the maximum heat generation amount (about 3,25
Heating operation is started at 0 kcal / h).

By the self-heating by the above combustion, the vaporizing cylinder 38
When the temperature is maintained at the vaporizable temperature of kerosene, the electric heater 36 is de-energized, but the burner 17 continues to burn. Here, when the energization to the electric heater 36 on the right side is stopped, at the same time, the electric heater 37 on the left side is energized to heat the vaporization tube 39, and the fact that the vaporization tube 39 has reached a predetermined temperature, When the burner temperature sensor 67 provided in the vaporization cylinder 39 detects it, the fuel pump 47 on the left side is detected.
Also, the operation is started, and the kerosene of the central oil leveler 45 is supplied to the vaporization cylinder 39. The vaporized gas of kerosene vaporized in the vaporization cylinder 39 first passes through the branch air supply pipe 55 and is then vaporized in the vaporization cylinder 39.
Premixed with the combustion air being supplied to the burner 1 on the right side
Combustion occurs in the same manner as in No. 7 and the combustion apparatus B on the left side is delayed by about 3 to 4 minutes from the start of operation of the combustion apparatus A on the right side, and the combustion amount of the combustion apparatus B on the left side is also about the maximum heat generation amount (about 3,
Heating operation at 250 kcal / h),
The heater performs a heating operation with a large capacity of about 6,500 kcal / h at the start of operation. Also, the burner 18 on the left side,
When the vaporization cylinder 38 is maintained at the vaporizable temperature of kerosene by self-heating, the electric power supply to the electric heater 37 is stopped, but the combustion continues.

As described above, when the burners 17 and 18 are burnt, the red heating elements 19 and 20 suspended in the combustion tubes 21 and 22 are heated to become red, and the radiant heat is directly or vertically generated. After reflecting to the opening 9 side by the reflection plate 22 and the horizontal reflection plate 23, the protective guard 10 and the opening 9 are reflected.
Is radiated into the room through the radiant heating. Also,
The combustion gas that has heated the red heating elements 19 and 20 is used as the heat exchanger 2
After flowing into the exhaust hoods 25 and 26 through 3, 24, the exhaust gas in the exhaust hoods 25 and 26 merges at the merging portion 58 through the exhaust branch pipes 56 and 57, respectively, and then the exhaust pipe 52 and the supply pipe. The air is exhausted to the outside through the exhaust stack 50.

Here, the heat exchanger 23 of the combustion device A on the right side
Reaches a predetermined temperature first, and a temperature detector (not shown) provided in the heat exchanger 23 detects it, the warm air blower 31 on the right side is driven first, and then the combustion device B on the left side is driven. When the temperature of the heat exchanger 24 reaches a predetermined temperature and a temperature detector (not shown) provided in the heat exchanger 24 detects it, the warm air blower 32 on the left side is also driven. These warm air blowers 31, 32
The indoor air supplied to the heat exchangers 23, 24 by driving the heat exchanger 23 and 24 exchanges heat with the combustion gas flowing in the heat exchangers 23, 24 to become warm air, and passes through the protective guard 10 and the opening 9 to form the outer case. 1 is discharged to the front and hot air heating is performed.

When the room temperature approaches the set temperature by the above-described radiant heating and warm air heating, the burner amount of both burners 17, 18 decreases, and the room temperature is controlled to the set temperature. Here, when the heating heat request becomes about 1,800 kcal / h or less, the burner 18 of the combustion device B on the left side is extinguished, and only the combustion device A on the right side performs the heating operation, and the heat generation amount is about 890 kk.
The heating operation can be performed with a small capacity of cal / h. In this case, the burner blowers 12 and 13 of both combustion devices A and B are still in the driving state, and the combustion exhaust gas of the right combustion device B during the heating operation continues through the exhaust branch pipe 56 to perform combustion while the operation is stopped. The flow to the device B side can be suppressed.

When the operation switch 63 is turned on while the strong control mode is set, the two combustion devices A and B both burn from strong to weak depending on the temperature difference between the room temperature and the set temperature. The heating operation is performed by the amount. Also in this case, combustion is started in the order of the combustion device A and the combustion device B, and the combustion device A,
The B electric heaters 36 and 37 are not energized at the same time. Further, when the operation switch 63 is turned on in the weak control mode setting, the two combustion devices A perform the heating operation with the combustion amount from strong to weak depending on the temperature difference between the room temperature and the set temperature. To do.

When an abnormality occurs in the combustion device A or B,
As shown in FIG. 8, the microcomputer 62 first determines which combustion device the abnormality is and the details of the abnormality.
When the combustion device A has an abnormality, the details of the abnormality are displayed on the set temperature display portion 73A of the digital display 73, as shown in FIG. When the combustion device B has an abnormality, the abnormality content is displayed on the room temperature display portion 73B of the digital display 73 as shown in FIG. Therefore, it is possible to identify which combustion device A or B has an abnormality by which part (upper or lower) of the digital display 73 is the abnormality display, and it is easy to compare the display contents with the table below. You can know the abnormal contents. Of course, the following table can be commonly used for the combustion devices A and B. Also,
It goes without saying that the microcomputer 62 stops the operation of the combustion devices A and B depending on the content of the abnormality and performs a safety operation.

[0028]

[Table 1]

When there is a display section for the current time, timer time, etc., as shown in FIGS. 11 and 12, the time display section displays "R" and "L" to display the combustion device A, B may be identified and the above-mentioned abnormality content may be displayed on the minute display section.

According to this embodiment, the burners 17 and 18 each capable of varying the amount of heat generation are connected to the combustion tubes 21 and 22 containing the red heating elements 19 and 20 and the heat exchangers 23 and 24 sequentially in the vertical direction. By arranging the pair of combustion devices A and B arranged side by side in one outer case 1, the automatic control mode or the strong combustion mode must be selected in advance at the start of heating during a severe cold season when the room temperature is extremely low. As a result, both of the pair of combustion devices A and B have the maximum heat generation amount (about 3,250).
Driving at kcal / h), large capacity (about 6,500 kca)
Radiant heating and warm air heating by the heat generation amount of 1 / h) can be performed to accelerate the rise in room temperature, and the combustion devices A and B
The electric heaters 36 and 37 are not energized at the same time, and the breaker can be prevented from flying.

Further, when the room temperature approaches the set temperature, the calorific value of both the pair of combustion devices A and B gradually decreases, and the calorific value of medium capacity (about 4,200 to 3,600 kcal / h). ) Or a small capacity (about 1,800 kcal / h calorific value) radiant heating and warm air heating can be performed to control the room temperature to a set optimum temperature.

Further, by relatively selecting a relatively warm time such as autumn and early spring, an automatic control mode, or a weak combustion mode in advance, when the heating heat demand is about 1,800 kcal / h or less, such as during warm daytime. Heating operation of the left combustion device B is stopped, and only the right combustion device A performs radiant heating and warm air heating.
By operating with a minimum calorific value, it is possible to perform heating operation with a minute small capacity (a calorific value of about 890 kcal / h), and it is possible not only to prevent overheating, but also to the right side combustion device A. Since it is possible to keep the operation continued, it is possible to realize warming and heating in which room temperature fluctuations are extremely small. The same applies when the weak control mode is selected.

Therefore, by operating both of the pair of combustion devices A and B, or operating only the right combustion device B, the difference between the maximum heat generation amount and the minimum heat generation amount can be set in the conventional heater. It can be doubled in comparison, and can be comfortably heated by proper room temperature control for a long season from autumn to early spring, or for 24 hours until a relatively warm daytime or night when it is severely cooled.

Moreover, when there is an abnormality in one of the combustion devices A and B, the digital display 73 can identify the abnormal combustion device, and the details of the abnormality can be known. Therefore, the displayed contents are complicated. It is possible to prevent it from happening and it is rich in serviceability.

Further, the pair of combustion devices A and B are provided with burners 17 and 18 having substantially the same maximum heat generation, and since the pair of control boards 59 and 60 are used, the burners 17 and 18 are Of course, the burner blowers 15, 16,
The components such as the combustion cylinders 21 and 22, the heat exchangers 23 and 24, and the lead wires can be shared, the design can be rationalized, and not only the components can be easily manufactured but also incorrect wiring can be prevented. ..

[0036]

Since the present invention is configured as described above, the difference between the maximum heat generation amount and the minimum heat generation amount can be obtained by operating all of a plurality of combustion devices or operating only one combustion device. It is possible to dramatically increase the size, and without worrying about lack of capacity or overheating, you can achieve comfortable heating or economical hot water supply for a long season from autumn to early spring. Also, when there is an abnormality in any of the multiple combustion devices, the content of the abnormality is displayed on the display unit corresponding to each combustion device in advance, so that the abnormal combustion device can be displayed without complicating the abnormality display. The service is rich in that it can be identified and the details of the abnormality can be known.

The same applies to the second aspect, and when any of the plurality of combustion devices has an abnormality,
Since the identification symbol of the abnormal combustion device and the details of the abnormality are displayed on the display, it does not complicate the abnormality display,
It is rich in serviceability, such as being able to identify an abnormal combustion device and to know the details of the abnormality.

[Brief description of drawings]

FIG. 1 is a block diagram of a control device for a heater (combustor) to which the present invention is applied.

FIG. 2 is a vertical cross-sectional view of a heater showing an embodiment of the present invention.

FIG. 3 is a vertical sectional side view showing a state where a heater is installed.

FIG. 4 is an external perspective view of the heater with a part of the protective guard cut away.

FIG. 5 is a microcomputer of a control device (control means)
6 is a flowchart for explaining control mode selection of FIG.

FIG. 6 is a flowchart for similarly explaining the operation of the microcomputer.

FIG. 7 is a flowchart for explaining the operation of the microcomputer following FIG.

FIG. 8 is a flow chart for explaining the operation of the microcomputer when there is an abnormality in the combustion device.

FIG. 9 is an explanatory diagram illustrating a display example when the digital display is abnormal.

FIG. 10 is an explanatory diagram showing another display example when the digital display is abnormal.

FIG. 11 is an explanatory diagram showing a display example when another digital display is abnormal.

FIG. 12 is an explanatory diagram showing another display example when another digital display is abnormal.

[Explanation of symbols]

 A combustion device B combustion device 62 microcomputer (control means) 73 digital display 73A set temperature display unit 73B room temperature display unit

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroyuki Ieda 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. In a combustor having a plurality of combustion devices, a control means for selecting and operating one or more of the plurality of combustion devices and a plurality of displays for displaying temperature, time, etc. When there is an abnormality in any of the plurality of combustion devices, the control means is configured to display the content of the abnormality on a display unit corresponding to each combustion device in advance. Combustor to do. 2. A combustor having a plurality of combustion devices, a control means for selecting and operating one or more of the plurality of combustion devices, and an indicator for displaying temperature, time and the like. When there is an abnormality in any of the plurality of combustion devices, the control means is configured to cause an indicator to display the identification symbol of the abnormal combustion device and the content of the abnormality. Combustion machine.