JPH02225950A - Space heating device - Google Patents

Abstract

PURPOSE:To prevent nonuniform temperature distribution by alternately and repeatedly changing the blow-off amount of warm air to be of a weak air volume and a very weak when the degree of combustion is fixed to a weak one. CONSTITUTION:Once an operation switch 38 of an operating part/display part 40 is switched on, detection temperature by an evaporator thermistor 18 is checked and a signal for controlling power supply to an evaporation heater 19 is outputted to a photocoupler 44. As the detection temperature of the evaporation thermistor 18 exceeds set temperature, a solenoid pump 14 and relays 41, 42 are actuated to actuate a relay 43 for a predetermined time. As temperature in a combustion chamber is raised with the passage of certain time thereafter, a signal to actuate a convection flow fan 10 is issued to a photocoupler 46. Operation frequency of the solenoid pump 14 and the period of the signal fed to the photocoupler 46 are varied on the basis of a difference between set temperature set in the operation part/display part 40 and room temperature detected by a room thermistor 47. The blow-off amount of warm air is alternately repeatedly changed to those of weak and gentle winds to prevent temperature distribution from being made non-uniform as well as body sensed temperature from being lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a heating device that can vary the intensity of combustion and the amount of hot air blown out.

(Prior art) In heating devices, for example, the amount of combustion is determined based on the difference between the set temperature and the room temperature, and the amount of hot air blown out is determined according to the amount of combustion, or the amount of combustion is determined based on the difference between the set temperature and the room temperature. The amount of combustion is determined from the difference, but there are some known types in which the amount of hot air blown out can be varied by external operation.

(Problem to be solved by the invention) However, in the former case, when the room temperature becomes close to the set temperature and the combustion amount becomes a weak combustion amount, the amount of warm air blowing out is also fixed at a weak air amount, so the air flow becomes a weak air amount. There was a problem that the temperature distribution in the room became uneven. For this reason, there is a problem in that the sensible temperature decreases if the bias of blowing out a relatively strong amount of air is minimized even when the wind is weak at 2 o'clock.

Further, in the latter type, the air volume does not change unless externally operated, so this type also has the same problem as the former, since the air volume is fixed when the combustion amount starts to reach a weak combustion amount.

Therefore, the present invention prevents the temperature distribution from being biased and also prevents a decrease in the sensible temperature by repeatedly changing the hot air blowing volume alternately between a weak air volume and a weak air volume when the combustion volume is fixed at a weak combustion volume. The purpose of the present invention is to provide a heating device that can provide a comfortable heating effect.

[Structure of the invention]

(Means for Solving Problem 1) The present invention provides a heating device that can change the intensity of the combustion amount and the amount of hot air blowing out, which uses a rhythm hot air switch and an on-operation of the hot air switch to warm the air. An air volume control means that repeatedly changes the air blowing amount between a weak air volume and a weak air volume that is even smaller than the weak air volume, and a combustion amount control means that fixes the combustion amount to the weak combustion amount by turning on a hot air switch. It has been established.

(Function) In the present invention having such a configuration, when the rhythm hot air switch is turned on, the combustion amount is fixed at a weak combustion amount, and the hot air blowing amount is repeatedly changed between a weak air amount and a weak air amount. become. Therefore, a change occurs in the hot air blown out, and an uneven temperature distribution is prevented.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a stand, and on top of this stand 1 is attached a main body 4 having a warm air outlet 2 on the front and an air intake port 3 on the rear.

Inside the main body 4 is a burner chamber 6 in which a burner 5 is provided, a combustion chamber 8 formed above the burner chamber 6 and having an opening 7 at the top, and an upper external portion of the combustion chamber 8 from the intake port 3. An air passage 9 is formed which communicates with the warm air outlet 2 via the hot air outlet. The opening 7 of the combustion chamber 8 communicates with the air passage 9.

A convection blower 10 is attached to the intake port 3. An ignition transformer 11 is attached to the side of the burner 5.

FIG. 2 shows a fuel supply mechanism for supplying fuel, such as kerosene, to the burner 5. A cartridge-type oil tank 13 containing kerosene is placed on top of an oil pan 12 with an airtight structure, with its oil supply port facing downward. It is placed there.

A certain amount of kerosene is always stored in the oil pan 12, and the kerosene is sucked up by an electromagnetic pump 14 and supplied to a vaporizer 16 via an oil supply pipe 15. A vaporizer filter 17, a vaporizer thermistor 18 for detecting vaporizer temperature, and a vaporizer heater 19 are attached to the vaporizer 16.

The vaporizer 16 is heated by the heater 19 to vaporize the supplied kerosene, and the vaporized gas is ejected into the burner 5 through a nozzle 20 from a spout 21 provided at the tip of the nozzle 20. I have to.

A needle shaft 23 is provided within the nozzle 20 and moves forward and backward depending on whether a solenoid 22 provided at the rear of the nozzle 20 is energized or de-energized. A kerosene return pipe 2 is provided at the rear end of the nozzle 20 and communicates with the oil pan 12.
4 is provided.

The nozzle 20 closes the spout 21 with the tip of the needle shaft 23 when the solenoid 22 is not energized, and communicates with the kerosene return pipe 24, and when the solenoid 22 is energized, the needle The shaft 23 is moved backward to open the spout 21 and close the communication port with the kerosene return pipe 24.

On the side of the burner 5 is a flame rod 2 for detecting flame.
5 is installed.

FIG. 3 shows a control circuit, in which one terminal of a power plug 31 is connected to a vaporizer temperature fuse 32 which is blown when the vaporizer 16 reaches an abnormally high temperature, and a vaporizer temperature fuse 32 which is blown when the temperature of the air blowing path 9 becomes abnormally high. Heating prevention thermometer 3 that opens when
3. Power line 1 through the current fuse 34 in series. The other terminal is connected to the power supply line 12.

A parallel circuit of a TNR element 35 and a capacitor 36 and a control circuit 37 are connected between the power lines I, 12, respectively.

The control circuit 37 includes an operation switch 38, an operation section/display section 40 equipped with a rhythm hot air switch 39, the electromagnetic pump 14, first, second, and third relays 41, 42, 43,
Oil amount sensor 44, first and second photocoupler 45.46
The light emitting element 45a.

46a, the carburetor thermistor 18, a room temperature thermistor 47 for detecting room temperature, the frame rod 25, and an earthquake-resistant automatic fire extinguishing device 48 are connected to each other.

The convection blower 1 is also connected to the power supply line 11+'2.
0 is connected to one end via a parallel circuit in which a resistor 51 is connected in parallel to a series circuit of a resistor 49 and a capacitor 50, and the other end is connected via the normally closed side of the switching contact 43a of the third relay 43. has been done.

A resistor 51 is connected to the series circuit of the resistor 49 and the capacitor 50.
The parallel circuit in which these are connected in parallel further includes a bidirectional three-terminal thyristor 46b forming the light receiving section of the second photocoupler 46, and a constant voltage conducting element type light receiving device connected between the gate and terminals of this thyristor 46b. Element 46c and resistor 52
The series circuit with is connected in parallel.

The power line 1. ．． 12 also includes the operation switch 3.
The carburetor heater 19 and a series circuit of a bidirectional three-terminal thyristor 54 are connected through an operation switch 53 that is linked to the thyristor 8. A constant voltage conduction element type light receiving element 45b of the first photocoupler 45 is connected between the gate and terminal of the thyristor 54 via a resistor 55. A series circuit of a capacitor 56 and a resistor 57 is connected in parallel to the thyristor 54.

A power line 13 is connected to the power line 11 through the operation switch 53 and the normally open contact 41a of the first relay 41 in series.

Then, the connection point between the anode and cathode of two diodes in the diode-domain circuit 58 is connected to the power supply line 13 via the normally open contact 42a of the second relay 42, and the The connection points between the anodes and cathodes of the remaining two diodes in the bridge circuit 58 are directly connected. The solenoid 22 is connected between the connection point where the anodes of the two diodes are connected and the connection point where the cathodes of the remaining two diodes are connected.

A resistor 59 is connected in parallel to the normally open contact 42a of the second relay 42.

The power line 1. ．． 12, the ignition transformer 11 is connected via the normally open side of the switching contact 43a of the third relay 43, and the capacitor 60 is also directly connected.

The control circuit 37 is programmed to perform the following operations.

When the operation switch 38 of the operation section/display section 40 is turned on, the temperature detected by the vaporizer thermistor 18 is checked, and a signal is output to the first photocoupler 45 to control the energization of the vaporizer heater 19. do. When the temperature detected by the vaporizer thermistor 18 exceeds the set temperature, the electromagnetic pump 14, the first relay 41, and the second relay 42 are turned on, and the third relay 43 is turned on for a certain period of time.

After that, when the temperature of the combustion chamber 8 increases after a certain period of time has passed, the second
A signal for operating the convection blower 10 is output to the photocoupler 46 of the photocoupler 46 .

Then, the operating frequency of the electromagnetic pump 14 and the period of the signal to the second photocoupler 46 are varied based on the difference between the set temperature set in the operation section/display section 40 and the room temperature detected by the room temperature thermistor 47. do. If the temperature difference is large, the amount of combustion is set to the side of the amount of strongly twisted phosphorus, and the convection blower 1
Change the air volume from 0 to strong wind 2. Further, if the temperature difference becomes smaller, the combustion amount is set to the weak combustion output side, and the air volume by the convection blower 10 is set to the weak output side. For example, suppose that the electromagnetic pump 14 changes in strength in 11 steps, and the convection blower 10 changes in strength in 5 steps, and the operation of the electromagnetic pump 14 is as shown in FIG. 4(a). When this changes, the convection blower 10 follows it and changes as shown in FIG. 4(b).

When the rhythm warm air switch 39 is turned on, the operation of the electromagnetic pump 14 is controlled to be in the minimum weak combustion state, and the convection blower 10 is controlled to the minimum weak air volume and one step weaker than that. For example, the control is performed such that a weak air volume for 10 minutes and a minimum weak air volume for 5 minutes are alternately repeated.

In this embodiment with such a configuration, the operation section/display 6
At 840, the room temperature is set and the operation switch 3 is turned on.
8, the carburetor 16 first turns on the carburetor heater 1.
When the temperature of the vaporizer] 6 reaches a certain set temperature, the electromagnetic pump 14 starts operating, and the kerosene in the oil pan 12 is supplied to the vaporizer 16, and the first and second relays 41 and 42 is turned on, the ignition transformer 11 is operated, and the solenoid 22 is operated to open the ejection port 21 of the nozzle 20.

In this way, the vaporized gas is sent to the burner 5, and the vaporized gas is ignited by the ignition transformer 11, resulting in ignition.

When the temperature of the combustion chamber 8 increases, the convection blower 10 is operated and hot air is blown out from the hot air outlet 2 through the air passage 9. The amount of combustion in the burner 5 changes as the operating frequency of the electromagnetic pump 14 changes depending on the temperature difference between the room temperature detected by the room temperature thermistor 47 and the set room temperature, and the air volume of the convection blower 10 follows the change in the amount of combustion. and change.

Therefore, if the set room temperature is raised during combustion, the operating frequency of the electromagnetic pump 14 will increase and the amount of combustion will increase, and the rotational speed of the convection blower 10 will also increase and the air volume will increase.

In this way, when the room temperature becomes sufficiently high and the rhythm hot air switch 39 is turned on, the operating frequency of the electromagnetic pump 14 is set to the minimum and the combustion amount becomes the minimum weak combustion amount. Further, the rotational speed of the convection blower 10 is also minimized, and the air volume becomes weak. When this condition continues for 10 minutes, the convection blower 1
The rotation speed at 0 becomes one step higher and becomes the minimum weak air volume. When this state continues for 5 minutes, the air volume generated by the convection blower 10 becomes weak again. In this way, by repeatedly changing the weak air volume and the minimum weak air volume, the indoor temperature distribution is made uniform without being biased. Furthermore, since the temperature distribution is prevented from being biased by changes in air volume, there is no need to set the minimum weak air volume to a very strong air volume. Therefore, a decrease in sensible temperature can be prevented.

In this way, there is no bias in the temperature distribution and there is no drop in the sensible temperature, so a comfortable heating effect can be obtained.

Note that although the above embodiment describes the application of the present invention to a heating device that uses kerosene as fuel, the present invention is not necessarily limited to this, and can also be applied to a heating device that uses gas fuel or an electric heating device. It is possible.

[Effects of the Invention] As detailed above, according to the present invention, when the combustion amount is fixed at a weak combustion amount, the temperature distribution is improved by repeatedly changing the hot air blowing amount between a weak air amount and a weak air amount. Therefore, it is possible to provide a heating device that can prevent the temperature from becoming unbalanced, prevent a decrease in the sensible temperature, and provide a comfortable heating effect.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a cross-sectional view showing the configuration of the main parts, Fig. 2 is a cross-sectional view of the part that feeds kerosene from the oil pan to the burner, Fig. 3 is a circuit diagram, and Fig. FIG. 4 is a diagram showing the control sequence of the electromagnetic pump and the convection blower. 5...Burner, 10...Convection blower, 14...
Electromagnetic pump, 16... vaporizer, 20... nozzle, 3
7... Control circuit, 39... Rhythm hot air switch, 4
1.42.43...Relay 46...2 photo couplers. Applicant's agent Patent attorney Takehiko Suzue

Claims (1)

[Claims] In a heating device that can change the intensity of the combustion amount and the amount of hot air blowing out, a rhythm hot air switch,
An air volume control means that repeatedly changes the hot air blowing amount between a weak air volume and a weak air volume that is even smaller than this weak air volume by turning on the hot air switch; and controlling the combustion amount by turning on the hot air switch. A heating device characterized by being provided with combustion amount control means that fixes the combustion amount to a weak combustion amount.