JPS6143084Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a temperature control of a vaporization burner that supplies liquid fuel into a burner heated to vaporization temperature by a vaporization heater, vaporizes it, and performs gasification combustion. This invention relates to an improved structure of the device.

(b) Prior Art Conventionally, in this type of vaporizing burner, the vaporizing heater was controlled by sensing the body temperature of the burner with a temperature sensor, as disclosed in Utility Model Application Publication No. 54-60325 and Utility Model Application Publication No. 54-60325. It is known from Publication No. 54-66584. By the way, in this conventional structure, a rod-shaped temperature sensor is passed through the casing as a burner case that surrounds the outer periphery of the burner body, and the tip of the temperature sensor is located in a recess provided in the peripheral wall of the burner body. By fitting it into the housing and preventing it from coming off at the appropriate place with a mounting bracket screwed to the housing,
The structure is such that a temperature sensor is attached to the burner.

(c) Problems to be solved by the invention In the prior art mentioned above, the mounting bracket to prevent the temperature sensor from coming off was screwed to the housing, so the temperature sensor could not be detected in the event of a failure. There is a drawback that if a screw or mounting bracket is lost when replacing the device, the temperature sensor cannot be installed, and the number of parts increases.

The present invention was developed in view of the above-mentioned problems, and aims to make it easier to install and remove the sensor so that it can be easily replaced in the event of a failure, and to reduce the number of parts. It is.

(d) Means for solving the problem The present invention performs gasification combustion by supplying liquid fuel into a burner heated to a vaporization temperature by a vaporization heater, and detects the above using a temperature sensor. In a device that controls the vaporization heater by sensing the temperature of the burner, a recess is formed along the axis of a holder made of a metal material with good thermal conductivity and having a threaded portion and a non-circular main portion. The temperature sensor is inserted into the recess and attached to the holder in a thermally conductive and integral manner, and the screw portion of the holder is removably screwed into a screw hole provided in the burner. It is composed of

(e) Operation By screwing the threaded portion 17' of the holder 17 into the threaded hole 18 provided in the burner 6, the temperature sensor 16
Since the temperature sensor 16 can be attached to the burner 6, the temperature sensor 16 can be easily attached and detached. or,
A recess X is formed along the axis of the holder 17 having a threaded portion 17' and a non-circular main portion 17A, and the temperature sensor 16 is inserted into the recess X.
7, the temperature sensor can be installed without using screws that are easy to lose as in the conventional case, solving the conventional problems and reducing the number of parts. Furthermore, since the holder 17 is made of a metal material with good thermal conductivity and the temperature sensor 16 is thermally attached to the holder 17, the temperature of the burner can be sensed through the holder. Heat conduction to the temperature sensor can be improved, and the vaporization heater can be controlled accurately.

(f) Embodiment An embodiment of the present invention will be described below based on the drawings. Reference numeral 1 denotes an air supply housing housing a burner motor 2 and an intake fan 4 attached to the rotating shaft 3 of the motor 2;
The air sucked in from the intake port 5 by the fan 4 is used as combustion air. 6 is a heat insulating board 24
It is a vaporizing burner attached to the upper surface of the air supply case 1 through a lower body 6a equipped with a vaporizing heater 7, an upper body equipped with a pair of upper and lower burner heads 9, 9 forming a burner port 8, and an air permeable heat equalizing plate 10. 6b.

Reference numeral 11 denotes a rotating atomizing body attached to the rotating shaft 3 of the motor 2 which penetrates through the air supply housing 1 and the opening 12 provided in the lower body 6a of the burner 6 and enters into the burner 6; a cone-shaped rotating body 11a; The scattering plate 11b and the stirring blade 11c are attached to the rotating shaft 3 in this order. 13 is a combustion cylinder that surrounds the burner 6; air supply case 1;
The shield plate 14 is attached to the shield plate 14 via a heat insulating plate 24. Reference numeral 15 denotes a fuel supply pipe that penetrates through the air supply housing 1 and is placed opposite to the rotating body 11a of the atomizer with a small gap at its tip, and is supplied to a liquid fuel tank such as kerosene through a solenoid valve, an electromagnetic pump, etc. It is communicated. 16
1 is a temperature sensor in which an element 16' such as a thermistor is covered with an aluminum cylinder; 17 is a holder made of a metal material with good thermal conductivity such as aluminum;
7 is a threaded portion 17' and a hexagonal non-circular main portion 17A.
Along the axis of the holder 17, a recess X into which the tip of the temperature sensor 16 is inserted is formed at the axis of the non-circular main portion 17A. The tip of the temperature sensor 16 inserted into the recess X is bonded to the holder 17 thermally and integrally with an adhesive such as alumina. Further, the screw portion 1 of the holder 17
7' is removably screwed into the screw hole 18 provided in the lower body 6a of the burner 6.
6 is attached to the burner 6 via a holder 17. The screw hole 18 is provided on the outer circumferential surface near the portion where the fuel splashed from the scattering plate 11b comes into contact. Reference numeral 19 denotes a U-shaped heat shield cover that covers the temperature sensor 16 and the lead wire 20 extending from the sensor 16, and is attached to the shield plate 14 to prevent the sensor 16 from malfunctioning due to radiant heat from the combustion flame. ,
Furthermore, the lead wire 20 is prevented from being heated.

When the liquid fuel is supplied from the supply pipe 15 onto the rotating body 11a of the atomizer, the scattering plate 11
b scatters in the outer circumferential direction. Since the burner 6 is heated by the vaporization heater 7 and controlled by the sensor 16 to a temperature that allows vaporization, the scattered fuel is instantly vaporized. On the other hand, air sucked in by the intake fan 4 is introduced into the burner 6 through the opening 12 and mixed with vaporized gas by the stirring blades 11c, and the mixture passes through the heat equalizing plate 10 and is injected and burned from the flame ports 8, 8... Ru.

Incidentally, FIG. 4 is a diagram of another embodiment, in which the element 16'
is inserted into a recess of a holder 17 through a glass cloth 21, and the tip of a pipe 22 extending from the holder 17 is caulked 23 with a lead wire 20.

(g) Effects of the invention Since the temperature control device for a vaporizing burner according to the invention is constructed as described above, it produces the following effects.

The temperature sensor can be attached to the burner by simply screwing the screw part of the holder into the burner, and the holder has a non-circular main part that can be tightened and removed using a tool such as a spanner. The temperature sensor can be easily attached and detached, and can be securely fixed to the burner, and its configuration is simple.

Since the temperature sensor is integrated and mounted on a holder with a threaded part, the temperature sensor can be mounted without using screws that are easily lost, which solves the inconveniences of the conventional method and at the same time reduces the number of parts. can be reduced.

The holder is made of a metal material with good thermal conductivity such as aluminum, so even though the burner temperature is sensed through the holder, heat conduction to the temperature sensor is good and the vaporization heater can be controlled accurately. can be done.

Since the temperature sensor is inserted into a recess formed along the axis of the holder and attached thermally, the holder and temperature sensor can be integrated linearly, and the holder can be attached to the burner screw. When the holder is screwed into the hole, there is no risk that the lead wire of the temperature sensor or the like will interfere with the rotation of the holder.

[Brief explanation of the drawing]

All figures are of the present invention; Figure 1 is a cross-sectional view;
FIG. 2 is an enlarged exploded sectional view of essential parts, FIG. 3 is a perspective view of a heat shield cover, and FIG. 4 is a sectional view showing another embodiment of the temperature sensor. 6...Burner, 7...Vaporization heater, 16...Temperature sensor, 17...Holder, 17'...Threaded portion, 17A...Non-circular main portion, X...Recess, 18...
...spiral hole.

Claims (1)

[Scope of utility model registration request] A liquid fuel is supplied into a burner heated to a vaporization temperature by a vaporization heater, and is vaporized to perform gasification combustion, and a temperature sensor senses the temperature of the burner to control the vaporization heater. In this case, a recess is formed along the axis of a holder made of a metal material with good heat conductivity and has a threaded portion and a non-circular main portion, and the temperature sensor is inserted into the recess. A temperature control device for a vaporizing burner, which is thermally and integrally attached to a holder, and a screw portion of the holder is detachably screwed into a screw hole provided in the burner.