JPH029251B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to improving the practicality of an oscillating gas heater.

[Prior Art] There have been proposed gas heaters in which a burner body is rotatably attached to a leg so that the burner body can be rotated freely, and an oscillating gas heater in which the burner body can be rotated and reciprocated (oscillated) by a motor.

[Problems to be solved by the invention] However, this type of conventional oscillating gas heater,
In either case, sufficient consideration was not given to safety of use, reliability of operation, or convenience of operation, and there were problems for use in general households.

An object of the present invention is to provide an oscillating gas heater that can solve the above-mentioned problems regarding safety and reliability of operation and has practicality that can be used in general households.

[Means for Solving the Problems] In order to achieve the above object, the oscillating gas heater of the present invention includes a leg, a burner body rotatably attached to the leg, a combustion control mechanism for the burner, and a burner body rotatably attached to the leg. It consists of a rotational drive mechanism of the main body, and a control device for the combustion control mechanism and the rotational drive mechanism, and the control device includes:
A structure is adopted in which the burner is provided with a normal combustion detection means and the rotary drive mechanism is allowed to operate only during normal combustion of the burner.

[Operation and Effects of the Invention] In this oscillating gas heater, the control device allows the rotational drive mechanism to operate only during normal combustion of the burner, so ignition is ensured and ignition errors can be prevented. Furthermore, when the burner combustion is stopped, the swinging can be automatically stopped, making the operation easy. Furthermore, even if the burner misfires for some reason, the oscillation stops, preventing unnecessary operation. These features provide excellent safety and operational reliability, as well as good operability and high practicality.

[Example] The present invention will be explained based on embodiments shown in the drawings.

This oscillating gas heater has legs 1 with a shell-like structure,
a burner main body 2 rotatably attached to the upper end of the leg 1 around a vertical axis L; a swinging mechanism 3 provided inside the leg 1 for reciprocating (oscillating) the main body 2 in the rotational direction; Sparker device
Burner combustion control mechanism 4 including SP and flame rod FL which is a flame sensor, and sound pressure sensor 50
and a control circuit 5 that controls the oscillating mechanism 3 and the combustion control mechanism 4.

The leg 1 has a flat foot portion 11 and a cylindrical shank portion 12 extending upward from the foot portion 11,
A shelf 13 is formed within the shank portion 12, and a support base 16 consisting of a vertical guide cylinder portion 14 concentric with the shank portion 12 and a disc-shaped deck portion 15 at its upper end is fixed to the shelf 13. Furthermore, the deck portion 15
A thrust bearing 17 is attached to the top. Further, a hose end connecting pipe 18, which is a gas pipe and has a cap 18a attached to its tip, is inserted into the foot part 11 from the rear end, and is bent by an L-shaped joint 19 so as to be concentric with the vertical axis L. There is.

The burner body 2 consists of a box-shaped case 20 and a burner 6 installed inside the case 20.

The case 20 has a guard net 22 attached to the front surface 21 and a round window 23, and a bottom plate 24.
A circular recess 25 into which the upper end of the shank 12 of the leg 1 is inserted is formed in the center of the leg. Further, a thick circular base plate 26 is fitted into the recess 25, and a circular contact plate 26 having a slightly smaller diameter than the base plate 26 is provided on the lower surface of the thick circular base plate 26.
7 is fixed to the plates 26 and 27, and a hollow rotating support shaft 28 whose interior is a gas flow path is provided through the shaft, and the lower end of the shaft is rotatably and airtightly fitted onto the joint 19. rotated joint 2
9 is installed, and a connection cap 30 is attached to its upper end.

This case 20 has an elevation angle of 10° with respect to the horizontal, and the abutting plate 27 is attached to the bearing 1 of the support base 16.
The hollow support shaft 28 is inserted into the guide cylinder 14 and rotatably supported by the leg 1 via the support base 16. Also burner 6
The front part includes a combustion plate 61 made of a ceramic plate with many small nozzles, and a holding can 6 for holding the combustion plate 61.
2. The rear part is a mixing cylinder 63 for fuel gas and primary air, a combustion plate 61 is installed corresponding to the round window 23, and a fuel gas injection nozzle 64 and a combustion air are installed at the rear end of the mixing cylinder 63. A suction port 65 is provided.

The swinging mechanism 3 has a known configuration, and
A motor M is fastened to the lower surface of 3 and has an output shaft 31 protruding above the shelf board 13, and a base end thereof is connected to the output shaft 3.
1, a link bar 33 whose one end is pivoted to the tip of the arm 32 and has a dogleg-shaped planar shape; a transmission pin 34 whose lower end is pivotally connected to the other end of the link bar 33 through an arcuate slit 15A provided in the transmission pin 15;
Consisting of In this oscillating mechanism 3, the contact plate 27 reciprocates around the vertical axis L as the motor M rotates, and the burner body 2 oscillates at an angle of 80°.

The burner combustion control mechanism 4 includes a normally lit pilot burner 41 attached to the lower front surface of the combustion plate 61, a spark discharge electrode 42 for igniting the pilot burner 41, and the leg 1.
a flame rod FL for supplying high voltage to the spark discharge electrode 42; and the normally lit pilot burner 4.
Pilot solenoid valve for supplying gas to 1
MV ₁ , a main solenoid valve MV ₂ for supplying gas to the nozzle 64 of the burner, a valve body 43 in which these solenoid valves are built, and the support shaft 2.
8 upper end and valve body 43, valve body 43
and the nozzle 64 and the always-fired pilot burner 4
Consists of gas pipes connecting 1.

Figure 3 shows the electrical circuit of the oscillating gas heater.

SW is an ignition switch for connecting a commercial power source (AC 100 volts) to the swinging mechanism 3, burner combustion control mechanism 4, and their control circuit 5, and as shown in FIG. The one installed behind section 11 and manually operated, SR ₁ is AC
Rectifier for rectifying 100 volts to direct current, TR
is a step-down transformer to 12 volts, and SR ₂ is a rectifier to obtain 12 volts DC.

The control circuit 5 includes a flame detection circuit 51 using the flame rod FL as a sensor, and a swing control circuit 53 using a sound pressure sensor 50 attached to the front surface of the shank 12 of the leg as a switch. The flame detection circuit 51 is a transistor that becomes conductive when the flame rod FL outputs (the resistance between the positive and negative electrodes is less than a set value).
T ₁ , a relay R 1 is provided between the swing control circuit 53 and the power source and closes the contact _a1 only when the transistor T ₁ is conductive. The swing control circuit 53 has a sound pressure sensor 50 such as a microphone that changes sound waves by applying a voltage to the sound pressure sensor 50.
When the input to the voice recognition circuit 55 matches the sound pressure pattern stored in advance in the storage device (voice recognition), the transistor _T2 is made conductive to the output and the contact a2 inserted in the power supply circuit of the motor is closed. Output. As a result, oscillation is performed only while the burner is burning normally and the presence of flame is detected by the flame rod. Further, when there is no flame, the contact a1 is open and no oscillation occurs.

Next, when a predetermined input is applied to the sound pressure sensor, the output is inverted and the conduction of the transistor _T2 is stopped.
This will stop the swinging. In this embodiment, the head swing control circuit 53 outputs an ON signal to start swinging when the sound pressure input of hand clapping is received twice within one second, and furthermore, when a similar input signal of hand clapping is received during the swing of the head, It is set to output an OFF signal when it gets hot. This enables wireless remote control and is less likely to cause malfunctions than when using other audio signals.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the oscillating gas heater of the present invention;
FIG. 2 is a perspective view thereof, and FIG. 3 is an electric circuit diagram. In the figure, 1... Leg, 2... Burner main body, 3... Oscillating mechanism, 4... Combustion control mechanism, 5... Control circuit, 50... Sound pressure sensor.

Claims (1)

[Scope of Claims] 1. A leg, a burner body rotatably attached to the leg, a burner combustion control mechanism, a rotational drive mechanism for the body, and a control device for the combustion control mechanism and rotational drive mechanism. An oscillating gas heater, wherein the control device includes normal combustion detection means for the burner, and allows the rotational drive mechanism to operate only during normal combustion of the burner. 2. The oscillating gas heater according to claim 1, wherein the rotational drive mechanism is started and stopped by the output of a sound pressure sensor provided in a control device.