JP3113390B2 - Heating system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device such as a radiant heater or a hot air heater provided with a liquid fuel combustion device.

[0002]

2. Description of the Related Art This type of heating apparatus is disclosed in, for example,
As disclosed in Japanese Patent No. 45285, a first liquid fuel combustion device having a vaporizing heater is provided, and the burner is sufficiently heated by the vaporizing heater, and then the liquid fuel is gasified and burned by the burner, and the heating operation is started. I am trying to do it.

[0003]

Particularly, in a cold region, a heating device is used for a long period of time in autumn, winter, and spring, and the heating load during that period varies greatly. However, a single liquid fuel combustion device is incorporated in the heating device, and it is difficult for one liquid fuel combustion device to cope with such a change in the heating load. Therefore, a plurality of heating devices are used in combination. Was. In other words, in the severe winter, a heating device equipped with a large liquid fuel combustion device was used, and in the spring and autumn when the heating load was small, a small oil stove was used. .

Of course, if a heating device having a plurality of liquid fuel combustion devices is used and these liquid fuel combustion devices are selected and started according to the magnitude of the heating load, the above-mentioned problem is solved. However, when the heating load is large, if the vaporization heaters of a plurality of liquid fuel combustion devices are energized simultaneously, the electric power consumption of the heating device will increase, and the breaker may operate depending on the contract power amount of the user. was there.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned facts, and enables a single heating device to perform a fine and appropriate room temperature control for a large fluctuation of a heating load, while preventing a breaker from being operated by a vaporization heater. To the combustion device while the heating operation is stopped.
It is an object of the present invention to suppress the inflow of exhaust gas .

[0006]

According to the present invention, a burner feeder is provided.
It has a blower and a vaporization heater and can change the amount of heat generated
Each burner, combustion cylinder, heat exchanger and exhaust hood
The first and second liquid fuel combustion devices separately provided are provided in one exterior.
A heating device housed in a case, wherein the first and second heating devices are provided .
Control means for sequentially starting the liquid fuel combustion device,
This control means starts the energization of the vaporization heater of the second liquid fuel combustion device after stopping the energization of the vaporization heater of the first liquid fuel combustion device, and starts the energization of the first and second liquid fuel combustion devices.
Even if the heating operation of one of the baking units is stopped, both bars
The drive of the air blower is configured to be continued .

[0007]

With this configuration, a single heating device can provide a fine and appropriate room temperature control for a large fluctuation in the heating load.
In addition to enabling the roll , even when the heating load is large and multiple liquid fuel combustion devices need to be started, the vaporization heaters are not energized at the same time, and the breaker operation by the vaporization heaters is prevented. You.
In the case of the heating operation of only one of the combustion devices, the heating operation is performed.
Combustion unit whose combustion exhaust gas has been shut down
Flow to the side can be suppressed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. 2 to 4, reference numeral 1 denotes an outer case. 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. And a front panel 1B 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 that covers the opening 9 is disposed in the opening 9. The back plate 3, the left and right side plates 4, 5 and the left and right front plates 6,
7 is formed by bending a single steel plate, and a heat shield plate 11 is attached to a lower portion of the top plate 2, and an upper portion of the right front plate 7 is also used as a display unit. Operation unit 12 is provided.

The protective guard 10 comprises a large number of guard elements 10A, 10A,... Made of a metal wire, and a large number of hollow cylindrical radiators 10B, 10B, made of a transparent heat-resistant glass. Radiant 10B
Are arranged in the opening 9 alternately at predetermined intervals 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 that can increase and decrease the amount of air supply by changing the rotation speed of 3, 14 and burner 1 that vaporizes and burns kerosene
7, 18 and combustion cylinders 21 and 22 made of a light-transmitting material such as heat-resistant glass and incorporating red heat bodies 19 and 20;
A pair of liquid fuel combustion devices (hereinafter, simply referred to as “combustion devices”) A and B formed by sequentially connecting the heat exchangers 23 and 24 and the exhaust hoods 25 and 26 in this order in the vertical direction are arranged at predetermined intervals. Has been established. The pair of combustion devices A and B are provided with a support 27, which is integrated into the burner blowers 15 and 16, respectively.
28 is mounted on the bottom plate 8 so as to be stably held in the outer case 1 in an upright state, and the combustion tubes 21 and 22 and the heat exchangers 23 and 24 are opposed to the opening 9 respectively. (See FIGS. 2 and 4).

Reference numeral 29 denotes a vertical reflector surrounding the outer circumferences of the combustion devices A and B except for the opening 9, 30 denotes a horizontal reflector provided at a lower portion in the outer case 1 and has a substantially L-shaped section, and 31 and 32 denote a horizontal reflector. The back plate 3 corresponding to the pair of heat exchangers 23 and 24, respectively.
A pair of hot air blowers is disposed at the top of the vertical reflector 29. A notch 33 is provided at an appropriate position of the vertical reflector 29 facing the hot air blowers 31, 32.
, The upper ends of the burners 17 and 18 are passed through.

The burners 17, 18 are provided in a burner case 3.
4, 35, and vaporizing cylinders 38, 39 having vaporizing electric heaters 36, 37 housed in the burner cases 34, 35.
And ceramic burner heads 40 and 41 provided in the vaporizing cylinders 38 and 39, and burner heads 40 and 41, respectively.
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 blowers 15, 16, respectively. Each of the burners 17 and 18 has a calorific value that is proportionally variable, and a maximum calorific value of about 3,250 k.
A common calorific value with the minimum calorific value set to about 890 kcal / h is used for cal / h. In addition, these burners 1
In addition to the burners 7 and 18, the burners 15 and 16, the combustion tubes 21 and 22, and the heat exchangers 23 and 24 are also used as common parts in the pair of combustion devices A and B.

Reference numerals 44 and 45 denote bottom plates 8 of the case body 1A.
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, respectively. The kerosene is replenished by an oil supply pipe (not shown) that branches off in the middle.

As shown in FIG. 3, reference numeral 50 denotes a wall X such as a room wall.
And a supply / exhaust pipe 50A on the distal end side facing the outside. The supply / exhaust pipe connection 50B on the base end side of the supply / exhaust pipe 50 has an air supply pipe 51 and an exhaust pipe 52. One end is connected. The air supply pipe 51 is bifurcated outside the outer case 1, and the distal ends of the branch air supply pipes 54, 55 downstream of the branch 53 are connected to the burner blowers 15, 16. The other ends of the substantially L-shaped exhaust branch pipes 56 and 57 each having one end connected to the hoods 25 and 26 join inside the outer case 1, and the junction 58 is connected to the other end of the exhaust pipe 52. I have. That is, the pair of combustion devices A and B are configured to supply and exhaust air using the common air supply / exhaust tube 50, the air supply pipe 51, and the exhaust pipe 52. Reference numerals 59 and 60 denote control boards disposed in spaces on both right and left sides in the case body 1A, respectively, and 61 denotes a back guard provided on the back of the outer case 1.

As shown in FIG. 1, a control device S is mounted on the control boards 59 and 60. 62 is a control board 60
A microcomputer (hereinafter referred to as “microcomputer”) is mounted on the input terminal of the microcomputer 62.
3, temperature setter 64, room temperature sensor 65, burner 17,1
The burner temperature sensors 66 and 67 for detecting the temperatures of the eight vaporizing cylinders 38 and 39, 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.
Electric heaters 36 and 3 for vaporizing the vaporizing sections 7 and 18
7, igniters 71 and 72, burner blowers 15 and 16, fuel pumps 46 and 47, blowers 31 and 32 for hot air, digital display 73 for displaying room temperature and set temperature, and control mode display including a plurality of display lamps Unit 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, the control board 59 on which one of the two control boards 59 and 60 is mounted as a main control board is used as a main control board. An electric circuit component (both not shown) is mounted, and is connected to the other control board 60 by a signal line 75. The control board 60 used as a relay control board includes a burner temperature sensor 67, a flame detector 69, a vaporizing electric heater 37, an igniter 72, and a burner blower 1 of the combustion device B close to the control board 60.
6 and a hot air blower 32 are connected by a connector, and the burner temperature sensor 66, the flame detector 68, the vaporizing electric heater 36, the igniter 71, the burner blower 15, the fuel pump 46, and the fuel pump 46 of the combustion device A are connected. 47, blower for hot air 3
1. The digital display 73 and the control mode display 74 are directly connected to the control board 59 by connectors. This means that the combustion devices A and B arranged on the left and right, and the blowers 31 and 32 for hot air and the control boards 59 and 60 are connected as much as possible by common lead wires, and the parts are shared and the nearest parts are connected. This is to eliminate a connector connection error by using the control board.

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 initially set, 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 switched. The control mode is set in order.

In the above configuration, when the operation switch 63 is turned on while the automatic control mode is set,
As shown in FIGS. 6 and 7, the electric heater 36 of the right burner 17 is energized, and the energization of the electric heater 36 heats the vaporizing cylinder 38. When the vaporizing cylinder 38 reaches a predetermined temperature, the burner temperature is determined. When the sensor 66 detects, both the burner blowers 15 and 16 are driven to perform pre-purge for a predetermined time, and the right fuel pump 46 is first operated. By starting the operation of the fuel pump 46, the oil leveler 44
Is squirted toward the lower surface of the rotating fuel atomizer 42 through the fuel supply pipe 48, and the kerosene scattered by the centrifugal force of the fuel atomizer 42 strikes the inner wall of the vaporizing cylinder 38 and is vaporized. I do. This vaporized gas is supplied to the supply / exhaust tube 50,
After being premixed with the combustion air sent from the burner blower 15 to the vaporizing cylinder 38 through the burner blower 15 through the first and branch air supply pipes 54, the fuel is ejected upward from the burner head 40, ignited by the igniter 71, and ignited by the burner head 40. Forms a flame F and burns,
Thus, the combustion device A on the right side has the maximum calorific value (about 3,25
0 kcal / h) to start the heating operation.

The self-heating by the combustion described above causes the vaporization cylinder 38
When is maintained at a temperature at which kerosene can be vaporized, the power supply to the electric heater 36 is stopped, but the burner 17 continues burning. Here, when the energization to the right electric heater 36 is stopped, at the same time, the left electric heater 37 is energized to heat the vaporizing cylinder 39, and that the vaporizing cylinder 39 reaches a predetermined temperature. When the burner temperature sensor 67 provided in the vaporizing cylinder 39 detects the temperature, the left fuel pump 47
Also starts operation, 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 then passes through the vaporization cylinder 39.
Premixed with the combustion air supplied to the burner 1
7 and the combustion device A on the right side has a maximum calorific value (approximately 3, 4
Heating operation at 250 kcal / h)
The heater performs a large capacity heating operation of about 6,500 kcal / h at the start of operation. The left burner 18 also
When the vaporization cylinder 38 is maintained at the temperature at which the kerosene can vaporize by self-heating, the power supply to the electric heater 37 is stopped, but the combustion continues.

As described above, when the burners 17 and 18 perform combustion, the red heat bodies 19 and 20 suspended in the combustion cylinders 21 and 22 are heated and glow red, and these radiant heats are directly or vertically. After being reflected toward the opening 9 by the reflection plate 22 and the horizontal reflection plate 23, the protection guard 10 and the opening 9 are reflected.
Radiated into the room through the radiant heating. Also,
The combustion gas that has heated the red heat bodies 19 and 20 is supplied to the heat exchanger 2
After flowing into the exhaust hoods 25 and 26 through the exhaust pipes 3 and 24, the exhaust gas in the exhaust hoods 25 and 26 passes through the exhaust branch pipes 56 and 57 and joins at the junction 58, respectively. The air is exhausted outside through the exhaust pipe 50.

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

When the room temperature approaches the set temperature by the above-described radiant heating and hot air heating, the burners 17 and 18 reduce the amount of combustion, and the room temperature is controlled to the set temperature. Here, when the heating heat demand is about 1,800 kcal / h or less, the burner 18 of the left combustion device B is extinguished, and the heating operation of only the right combustion device A is performed.
The heating operation with a small capacity of cal / h can be performed. In this case, the burner blowers 12 and 13 of both the combustion devices A and B remain in the driving state, and the right combustion device during the heating operation is continued.
It is possible to suppress the combustion exhaust gas of the device A from flowing through the exhaust branch pipe 56 to the side of the combustion device B whose operation is stopped.

When the operation switch 63 is turned on in the state in which the strong control mode is set, both the two combustion devices A and B perform combustion from strong to weak in accordance with the temperature difference between the room temperature and the set temperature. Perform heating operation 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 devices A and
The electric heaters 36 and 37 of B are not energized at the same time. When the operation switch 63 is turned on in the state where the weak control mode is set, the two combustion devices A perform the heating operation with the amount of combustion from strong to weak in accordance with the temperature difference between the room temperature and the set temperature. Do.

According to the present embodiment, the combustion cylinders 21 and 22 having the built-in red heat bodies 19 and 20 and the heat exchangers 23 and 24 are sequentially connected to the burners 17 and 18 each having a variable heating value in the vertical direction. By automatically arranging the pair of combustion devices A and B in one exterior case 1 at the time of starting heating such as a severe cold season when the room temperature is extremely low, the automatic control mode or the strong combustion mode must be selected in advance. As a result, both of the pair of combustion devices A and B have the maximum heat value (about 3,250
kcal / h), and has a large capacity (about 6,500 kca
(heating value of 1 / h) and radiant heating and hot air heating to speed up the rise of room temperature.
The electric heaters 36 and 37 are not energized at the same time, so that the breaker does not fly.

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

Further, by selecting a relatively warm season such as autumn or 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 in a warm daytime or the like. The heating operation of the combustion device B on the left is stopped, the radiant heating and the hot air heating are performed only by the combustion device A on the right, and the combustion device A on the right
Is operated with the minimum heating value, it is possible to perform a heating operation with a minute small capacity (a heating value of about 890 kcal / h), and it is possible to prevent overheating, and of course, the combustion device A on the right side. Since the operation can be continued, it is possible to realize the heat-retaining heating with extremely little room temperature fluctuation. The same applies when the weak control mode is selected.

Therefore, both of the pair of combustion devices A and B capable of varying the amount of heat generated can be operated or the right combustion device B can be operated.
By operating only the heater, the difference between the maximum heating value and the minimum heating value can be doubled compared to the conventional heater, and it can be used for a long season from autumn to early spring, or during a relatively warm daytime or at night when the temperature gets cold. For 24 hours, it is possible to perform comfortable heating by fine and appropriate room temperature control and prevent simultaneous energization of the electric heaters 36 and 37,
Breaker operation can be prevented. Also, the combustion device on the left
The burner 18 of B is extinguished, and only the right combustion device A is warmed up.
Burner blower 1 for both combustion devices A and B
Heating operation is continued because 2, 13 remain in the driving state
The combustion exhaust gas from the combustion device A on the right
The flow to the combustion device B side can be suppressed, and the exhaust
Even if they are merged, the components of the combustion device that are shut down
(For example, a burner blower)
Can be prevented from being affected and degraded or damaged
You.

The burners 17 and 18 having substantially the same maximum heat generation are incorporated in the pair of combustion devices A and B, and the pair of control boards 59 and 60 are used. Of course, burner blowers 15, 16
The components such as the combustion tubes 21 and 22 and the heat exchangers 23 and 24 and the lead wires can be shared, so that the design can be rationalized, and not only the production of each component can be facilitated but also incorrect wiring can be prevented. .

[0030]

Since the present invention is configured as described above, the maximum heat generation can be achieved by operating all of the plurality of combustion devices each capable of varying the heat generation amount, or by operating only one combustion device. And the minimum calorific value can be greatly increased, and there is no need to worry about insufficient capacity or overheating, and a fine and appropriate room for a long season from autumn to early spring
Temperature control becomes possible, and comfortable heating can be realized . Further, the vaporization heaters of the plurality of combustion devices are not energized at the same time, and the operation of the breaker can be prevented . Further
In addition, the flow of combustion exhaust gas to the combustion device during
Control, so that the exhaust paths of both combustion devices
Even if the engine is shut down, the components
Degraded or damaged due to the adverse thermal effect of burning exhaust gas
Can be prevented.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view of a heater showing one embodiment of the present invention.

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

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

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

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

FIG. 7 is a flowchart following FIG. 6 for explaining the operation of the microcomputer.

[Explanation of symbols]

 A Combustion device (first liquid fuel combustion device) B Combustion device (second liquid fuel combustion device) 36, 37 Electric heater for vaporization (vaporization heater) 62 Microcomputer (control means)

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroyuki Ieda 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-57-187508 (JP, A) (58) Field surveyed (Int.Cl. ⁷ , DB name) F23N 5/00 F23N 3/08 F23N 5/20

Claims (1)

(57) [Claims] (1) When a burner blower and a vaporization heater are provided.
Burners, combustion cylinders, heat exchangers,
First and second liquid fuels each having an exhaust hood individually.
Heating system in which the fuel combustion device is housed in one outer case
And a control means for sequentially starting the first and second liquid fuel combustion apparatuses, and the control means stops the energization of the vaporization heater of the first liquid fuel combustion apparatus, and thereafter controls the second liquid fuel combustion apparatus. together to start the energization of vaporization heater, the
Heating operation of one of the first and second liquid fuel combustion devices
The heating device is configured to continue driving both of the burner blowers even if the operation is stopped .