JPS5844166B2 - Housing type gas burner device for dental laboratory - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas burner device for dental technology suitable for use in melting or softening metal crowns.

Conventional gas burner devices for dental techniques are designed to obtain the desired firepower according to the application by adjusting the amount of air introduced and the amount of gas using respective control valves. etc. were melted or softened.

However, since the flame is thick, it is difficult to perform spot melting, softening, waxing, etc., and requires skill.

This invention was made to solve the above-mentioned drawbacks, and its purpose is to provide a fixed burner with a thick flame for use in melting or softening low-melting materials, and a fixed burner with a thin flame that is powerful enough to melt or soften materials with a low melting point. By installing a movable pen silver burner for melting and softening, it is possible to melt or soften technical paraffin, synthetic resins, and low melting point alloys easily and quickly. By making it easy to perform softening or waxing with high precision, and by making it easier to work with the burner by placing your hand on the workbench, you can also make the entire burner more compact, making it easier to work with the burner even in tight spaces. An object of the present invention is to generally provide a housing-type gas burner device for dental technicians that can perform the following functions.

The present invention will be explained below with reference to an embodiment shown in the drawings.

In the figure, reference numeral 1 denotes a small case with an upside-down shape, and as shown in the first figure, the front side is higher than the front side.

The reason why the upper left corner of the stepped rectangular case was cut out was to install a fixed upward burner nozzle 20, which will be described later, in this part.
This makes it possible to make the entire gas burner compact and to reduce the area it occupies in the workplace.

2 and 3 indicate compressed air pipes and gas pipes housed in the housing 1, respectively.

Both of these 2 and 3 are connected at their one ends to connecting pipes 4 and 5, respectively, which are attached so as to protrude from the front wall of the housing 10.
and the other end is connected to the communication pipe 6, respectively.

The end of this communication pipe 6 is connected to a discharge pipe 7, and the end of the discharge pipe is connected to a connecting pipe 8 which is attached so as to protrude from the front wall surface 1' of the housing 10.

Reference numerals 9 and 10 indicate control valves installed in the middle of the compressed air pipe 2 and the gas pipe 3, respectively, which control the respective flow rates of compressed air and gas in conjunction with knobs 9' and 1σ located on the upper surface in front of the housing 1. Adjust as appropriate.

Thus, the air compressed by the compressor (not shown) passes through the compressed air pipe 2 via the flexible pipe 11 and flows into the communication pipe 6, while the gas passes through the flexible pipe 12 into the gas pipe. 3 and flows into the communication pipe 6, where the compressed air and gas are mixed and flowed to the discharge pipe 7.

Reference numeral 13 denotes a flexible tube made of rubber or synthetic resin, one end of which is connected to the connecting tube 8, and the other end connected to the pen silver burner 14, respectively.

This pencil burner 14 is a synthetic resin tube 1 about the thickness of a pencil made of a heat-resistant material such as Bakelite or Teflon.
5, and a metal nozzle portion 16 that is screwed together at the tip of the synthetic resin tube.

The synthetic resin pipe 15 has an insertion part 15a that fits tightly into the flexible outgoing pipe 13 at its end part, and a thread 15b' is carved in the tip part of the synthetic resin pipe 15, and the synthetic resin pipe 15 is inserted into the synthetic resin pipe located near the thread. A cylindrical flange 15c made of the same material as the synthetic resin pipe 15 is fitted into the stepped portion 15b of the pipe 15.

This cylindrical flange 15c is provided to prevent fingertips from directly touching the heated nozzle portion 16.

The nozzle part 16 is screwed onto the tip of the synthetic resin pipe 15, and has a base cylinder 16a secured with a pin to prevent both from coming off.
The nozzle 16b is screwed into the base cylinder, and the cover 16c is screwed into the outer periphery of the nozzle.

The center hole 16d of the nozzle 16b gradually becomes thinner from the base to the tip, and two pinholes 16e are bored in the radial direction in the middle of the center hole, and a flange 16f is provided on the outer periphery of the nozzle tip. Six through holes 16g are formed at equal intervals on the same circumference of the flange.

The outer circumferential surface of the flange is in sliding contact with the inner circumferential wall surface of the cover unit 16c.

The mixture of compressed air and gas passes through the synthetic resin pipe 15 and is sent to the nozzle 16b.

The air-fuel mixture is ejected through the center hole 16d within the nozzle 16b, while the air-fuel mixture is further ejected through the pinhole 16e within the nozzle.
, and flows out into the space formed by the inner circumferential wall surface of the integral cover 16c and the outer circumferential surface of the nozzle 16b, and the air-fuel mixture in the space is evenly distributed from the six through holes 16g through the six middle holes 16d. It ejects as a sharp, thin flame while being sucked in by the gushing air-fuel mixture.

Reference numeral 17 denotes a hook provided on the side wall of the housing 1, to which the pen silver burner 14 is retained when not in use, and when used, the pen silver burner 14 is taken out from the hook 17 and used.

18 is the gas pipe 3 in front of the position where the control valve 10 is installed.
It is a branch pipe branched from the 0 part, and its tip is connected to a horizontal pipe 19 attached to a side wall (side wall of the left front part) in a position recessed from the front side wall of the front part in the housing 1.

One end of this horizontal tube is closed, and the other end extends outward from the side wall of the housing 1 in the front part, as shown in the fourth figure.
It is connected to a burner nozzle 20 that intersects with this perpendicularly.

In addition, a through hole 2 is provided in the portion of the horizontal pipe 19 that is exposed to the outside of the housing.
1 is drilled through which air necessary for combustion of gas is taken in. In order to adjust the amount of air taken in, a regulating pipe 22 screwed onto the outer surface of the horizontal pipe 19 is moved back and forth.

Reference numeral 23 denotes a control valve provided on the horizontal pipe 19 corresponding to the mounting position of the branch pipe 18, and a knob 23 located on the front upper surface of the housing 1.
By rotating the knob, the control valve 23 is opened and closed via the rod 24 which rotates in conjunction with the knob, thereby adjusting the amount of gas passing through the burner nozzle.

Reference numeral 25 denotes an actuator fixed in the middle of the rod 24, which controls the control valve 2.
3, the operating element turns on and off a switch 2γ of an ignition spark power supply circuit 26, which will be described later.

26 is an ignition spark power circuit housed in the housing 1;
A battery 26a that can be detachably stored in the side wall of the housing, a switch 27 connected to the positive terminal of the battery via a lead wire 26b, a transformer 26d with a built-in IC circuit connected to the switch via a lead wire 26c, and the output of the transformer. The lead wire 26e connected to the side and the lead wire are passed through the burner nozzle 20 and installed at a position with a certain spark gap from the nozzle end, and the negative electrode of the battery 26a is electrically connected to the casing, and the lead wire is passed through the burner nozzle 20. It has a circuit configuration in which the ends are electrically connected.

The surface of the casing is coated for electrical safety to prevent electric shock.

Note that 28 in the figure is a lid that closes the bottom surface of the casing via screws 28a, and rubber feet 29 are attached to appropriate positions on the lid.

As can be seen from the above description, this invention houses a compressed air pipe and a gas pipe respectively in a small, inverted-shaped case with a step on the front side that is higher than the front side. When connected to separate connecting pipes attached so as to protrude from the front wall surface of the housing, the other ends are respectively connected to communicating pipes, and the ends of the communicating pipes are connected to a discharge pipe,
Connect the end of the discharge pipe to a connecting pipe installed so as to protrude from the front wall of the housing, and insert the knobs that are linked to the control valves provided in the middle of the compressed air pipe and the gas pipe, respectively, to the front of the housing. A heat-resistant synthetic resin pen silver burner about the thickness of a pencil is connected to the connection pipe provided on the top surface and connected to the discharge pipe via a flexible tube, and a hook for locking the pen silver burner is attached to the housing. The tip of the pen silver burner is provided on the side wall of the body, and the tip of the pen silver burner has a thin central hole in its center for blowing out a mixture of compressed air and gas, and is formed in the radial direction in the middle of the narrow central hole for passing the mixture. a branch pipe branched from a portion of the gas pipe in front of the mounting position of the control valve; The distal end of the is connected to a horizontal pipe attached to the side wall of the front part of the casing in a position recessed from the front side wall of the casing so as to protrude outward, and the horizontal pipe is connected perpendicularly to the non-compressed air combustion This dental laboratory type gas burner device is connected to a burner nozzle, so it has the following unique effects.

(I) By installing a fixed burner with a thick flame and used for melting or softening materials with a bottom melting point, and a movable pen burner with a thin flame and strong flame for spot melting and softening, a single burner device can be created. It can consistently melt and soften materials from the bottom melting point to the high melting point, and it can easily and quickly melt and soften materials such as paraffin for dental technology, synthetic resins, and low melting point alloys. It becomes possible to perform spot melting and softening treatment of softened materials, enabling precise and advanced melting and softening work in the field of dental technology.

(I)) A fixed burner and a movable pen burner are installed in a small, flat, inverted-shaped housing with a step higher at the front than the front, making the overall burner device compact and suitable for use in examination rooms and dental laboratories. Burner operations for melting and softening materials from low melting points to high melting points can be performed easily and quickly even in a narrow space, and dental treatment procedures can be shortened accordingly.

Moreover, the front of the housing is lower than the front, so even when working with the housing on a workbench, you can work on the burner with both hands on the workbench. In addition, the pen silver burner is as thin as a pencil and lightweight due to the use of synthetic resin, making it possible to carry out precise dental laboratory work for long periods of time in a stable state even when holding it in the hand, reducing worker fatigue. It has the convenience of not giving any impression.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the invention, Fig. 2 is a rear view thereof, and Fig. 3 is a perspective view of the invention.
The figure is a right side view, Figure 4 is a block diagram implicitly showing the piping and wiring inside the housing, Figure 5 is a front view of the pen silver burner, Figure 6 is a sectional view taken along line A-A in Figure 5, FIG. 7 is a plan view of FIG. 5. 1... Housing, 2... Compressed air pipe, 3
...gas pipe, 13...flexible outgoing pipe,
14・・・・・・Pens Silver Burner, 20・・・・・・
Burner nozzle, 23... Control valve, 25...
... Actuator, 26 ... Spark power circuit for ignition, 27 ... Switch.

Claims (1)

[Claims] 1. A compressed air pipe and a gas pipe are housed in a small, inverted-shaped case with a step at the front that is higher than the front.
One end of each of these pipes is connected to a separate connecting pipe attached to protrude from the front wall of the housing, and the other end is connected to a communicating pipe, and the end of the communicating pipe is connected to a discharge pipe. , the end of the discharge pipe is connected to a connecting pipe protruding from the front wall of the housing, and knobs are connected to control valves provided in the middle of the compressed air pipe and the gas pipe, respectively. are provided on the upper surface of the front side of the housing, and a heat-resistant synthetic resin nohensil burner about the thickness of a pencil is connected to the connecting pipe connected to the discharge pipe via a flexible column pipe, and the pencil burner is connected to the connecting pipe connected to the discharge pipe. A locking hook is provided on the side wall of the casing, and the tip of the pen silver burner has a thin center hole in its center for spouting a mixture of compressed air and gas, and a thin center hole for passing the mixture. It has a pinhole formed in the radial direction in the middle, and a thin through hole in the axial direction that communicates with the pinhole and is drilled around the center hole. Connect the tip of the branch pipe branched from the section to a horizontal pipe attached to the side wall of the front part of the casing in a recessed position than the front side wall of the casing so as to project outward, and connect the horizontal pipe perpendicularly to this. A housing-type gas burner device for a dental laboratory, which is connected to a burner nozzle using uncompressed air fuel that intersects with the burner nozzle.