JPS6321898Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a mercury lamp device for a photochemical reaction experiment.

Low-pressure mercury lamps generate less heat and generally do not require cooling;
In particular, in the case of internal irradiation type, there is a disadvantage that the temperature rises due to the heat generated by the mercury lamp itself and the wavelength characteristics fluctuate. Inconveniences such as turning off the light may occur. Therefore, conventionally, mercury lamps were maintained at an appropriate temperature of around 40° C. by circulating water, air, or the like. For example, when using an air cooling method, if the reaction is to be carried out while keeping the sample at a high temperature, air is blown to cool the lamp.
Since the lamp would not light up at such low temperatures, warm air at room temperature was sent to create the conditions for the lamp to light properly. However, in conventional systems, the circumferential wall of the cooling pipe has a double structure, and air is sent from the top to the center of the cooling pipe, passes through the bottom, passes through the space between the outer wall and the inner wall, and is discharged from near the top of the outer wall. Ta. Conventional cooling pipes have the disadvantage that they are not easy to manufacture because they have a double structure, and the material of the cooling pipe is expensive synthetic quartz glass, so a double structure increases manufacturing costs and also allows UV rays to be emitted. It has disadvantages such as reduced power consumption, and also has the disadvantage that the cooling pipe must be larger than a built-in mercury lamp.

Therefore, this idea was devised to solve the above-mentioned difficulties.The gist of the idea is to form a long cylindrical cooling pipe with a bottom using transparent synthetic quartz glass, and to form a cooling pipe on the outer periphery near the opening of the cooling pipe. A sliding part that fits into the opening of the reaction vessel is formed protrudingly, and a mercury lamp and a blower tube for adjusting the temperature of the mercury lamp are arranged inside the cooling tube, and the blower tube fits into the cooling tube. Attach the tip to the center of the support plate, and fix the base end to the center of the rubber cap fitted to the cooling tube with a connecting fitting. Meanwhile, fold the mercury lamp so that the lamp body is positioned toward the outer circumference of the blast tube. The mercury lamp is formed into a curved shape, and both ends of the mercury lamp are held between clamping metal fittings and fixed to a blower pipe via the holding metal fittings, and a blowing hole is bored in the outer periphery of the blower tube facing the lamp body, while the lid of the rubber cap is This consists in that an exhaust hole is formed in the lid, the connecting metal fitting is clamped in the center of the lid, and a dust prevention plate is formed on the connecting metal fitting to cover the exhaust hole from above.

An embodiment of this invention will be described below based on the drawings. In the figure, reference numeral 1 denotes a bottomed long cylindrical cooling tube made of transparent quartz glass, and near the opening of this cooling tube 1, a tapered sliding portion 3 that fits into the opening of the reaction vessel 2 is formed to protrude.

Inside the cooling pipe 1, a mercury lamp 4 and a blower pipe 5 for blowing air to keep the mercury lamp 4 at a constant temperature are disposed. The blower pipe 5 has a support plate 6 attached to its tip with screws or the like so as to be located on the center line of the cooling pipe 1, and its base end is attached to the center of a rubber cap 7 that is fitted over the opening of the cooling pipe 1. , are fixed by connecting fittings 8. Furthermore, a large number of ventilation holes 9 are bored along the axial direction on the outer circumference near the tip of the ventilation pipe 5.

A mercury lamp 4 is disposed in the blast pipe 5 constructed in this manner. The mercury lamp 4 is made by bending the center at an angle of 180° to form a substantially U-shape from the front, and further bending the center to form a substantially U-shape from the side.
The lamp tube body 4 is located at the corner of the square in the cross section.
The shape is such that A is located there.

Then, both ends of the lamp tube body 4A are clamped by clamping fittings 10, and the clamping fittings 10 are fixed to the blower pipe 5. The clamping fitting 10 in the illustrated example is provided with a pair of clamping plates 11 having two clamping grooves 11A arranged in parallel and a screw through hole 11B bored in the center, and the clamping grooves 11A of the clamping plates 11 facing each other. , this groove 11
Both ends of the lamp tube body 4A are positioned within A and are tightened with set screws 12. The clamping fitting 10 is fixed to the blower pipe 5 by fixing one side of the clamping plate 11 to the fixed cylinder 18 and screwing the setscrew 12 into the fixed cylinder 18 in which the screw through hole 11B of the clamping plate 11 is located. screw hole 1
8A and fixing the fixing tube 18 to an appropriate position of the blower pipe 5 by welding, brazing, etc., but it can also be done by other appropriate means, such as a fixing band (not shown). You can do it. Furthermore, although not shown in the drawings, two mercury lamps are provided that are bent into a U-shape, and in order to hold both ends of the mercury lamps,
Two sets of clamping fittings 10 may be fixed to the blower pipe 5, and in this case, two mercury lamps can be efficiently disposed within the cooling pipe 1, and the luminous capacity can be increased.

The connecting fitting 8 includes a female fitting 8A to which the base end of the blower pipe 5 is fixed, and a male fitting to which a connecting pipe 13 to which an air tube from the blower (both not shown) is fitted and fixed is attached. The metal fittings 8B are attached so as to clamp and fix the rubber cap 7 by respective threaded portions 8C. Note that a large number of exhaust holes 14 are bored in the lid portion of the rubber cap 7, and a dust prevention plate 15 is integrally provided in the male fitting 8B to prevent dust from entering through the exhaust holes 14. It is set up.
The air pipe 5 is plated with high reflectance in order to improve irradiation efficiency. In addition, 1 in the figure
6 is an annular projection formed protrudingly on the outer periphery near the opening of the cooling pipe 1, and this annular projection 16 and the annular projection 1
The rubber cap 7 is prevented from falling off from the cooling pipe 1 by a stopper band 17 which is fastened to the rubber cap 7 on the cooling pipe 1.

This device is constructed as shown above, with a bottomed long cylindrical cooling tube 1 made of transparent synthetic quartz glass, and a sliding ring that fits into the opening of the reaction vessel 2 on the outer periphery near the opening of the cooling tube 1. Since the portion 3 is formed to protrude, a mercury lamp device for an internal irradiation type photochemical reaction experiment device can be provided with a simple configuration.

Since a mercury lamp 4 and a blower pipe 5 for adjusting the temperature of the mercury lamp 4 are disposed inside the cooling pipe 1, there is no inconvenience that the generated ultraviolet rays are absorbed by the water and reduced, unlike a water-cooled type, for example. Problems such as the formation of limescale do not occur. Furthermore, there is an advantage that the temperature of the mercury lamp 4 can be easily adjusted. For example, by blowing indoor air with a blower even when the temperature is as low as -78℃ or when the temperature is high, the temperature of the mercury lamp 4 can be kept at around 40℃ because the lamp itself generates heat. Can be retained. Therefore, there are inconveniences such as when the mercury lamp 4 does not light up because the ambient temperature is too low, and
It is possible to easily solve the problem that the wavelength characteristics of the mercury lamp 4 fluctuate due to an increase in the number of visible light rays generated when the ambient temperature is too high.

The tip of the blow tube 5 is fixed to the center of the support plate 6 that fits into the cooling tube 1, and the base end is fixed to the center of the rubber cap 7 fitted to the cooling tube 1 with a connecting fitting 10. The mercury lamp 4 is bent so that the lamp tube body 4A is positioned in the outer circumferential direction of the tube 5, and both ends of the mercury lamp 4 are held by a clamping fitting 10 and fixed to the blower pipe 5 via the clamping fitting 10, and the air blower is Since the exhaust hole 14 is bored on the outer periphery of the tube 5 facing the lamp tube body 4A, the mercury lamp 4 and the blower tube 5 can be easily integrated, and the mercury lamp 4 can be easily replaced and the cooling tube 1 can be cleaned. Be able to do it.
Moreover, there is no need to form an air flow path for adjusting the temperature of the mercury lamp with a double structure unlike in conventional cooling pipes, and the cooling pipe 1 can be made into a single cylinder structure, simplifying the construction and making manufacturing and maintenance easier. It is simple, has good transparency, and can be expected to be highly efficient.

Furthermore, since the mercury lamp 4 is bent so that the lamp tube body 4A is located in the outer circumferential direction of the blower tube 5, the blower tube 5 does not block the light rays and the irradiation efficiency is good. Moreover, the amount of light emitted can be increased more efficiently than conventional products, and if the amount of light emitted is the same, the outer diameter can be made smaller than that of the conventional products, making it possible to make the entire product compact.

In addition, since the connecting fitting 8 is clamped at the center of the lid of the rubber cap 7 and a dust prevention plate 15 is formed on the connecting fitting 8 to cover the exhaust hole 14 from above, rubber does not fall into the cooling pipe 1. Therefore, devitrification of the synthetic quartz glass due to rubber adhesion does not occur.

As explained above, according to this invention, a mercury lamp device for a photochemical reaction experiment device can be provided as a simple, compact, and inexpensive device.
Furthermore, various effects that are extremely useful in practice, such as high irradiation efficiency and stable wavelength characteristics, can be obtained.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a partially cutaway front view showing the whole, FIG. 2 is a side view of the same, and FIG. 3 is an enlarged sectional view taken along the line A--A in FIG. 1. DESCRIPTION OF SYMBOLS 1...Cooling pipe, 2...Reaction container, 3...Sliding part, 4...Mercury lamp, 4A...Lamp tube body, 5...
Air pipe, 6...Support board, 7...Rubber cap, 8
...Connection fitting, 8A...Female fitting, 8B...Male fitting, 8C...Threaded part, 9...Blower hole, 10...
Clamping fitting, 11... Clamping plate, 11A... Clamping groove,
11B...screw through hole, 12...set screw, 13
...Joining pipe, 14...Exhaust hole, 15...Dust prevention plate, 16...Annular projection, 17...Stopping band, 1
8...Fixed cylinder, 19...Screw hole.

Claims (1)

[Scope of utility model registration request] A long cylindrical cooling tube with a bottom is formed from transparent synthetic quartz glass, and a sliding part that fits into the opening of the reaction vessel is formed protruding from the outer periphery near the opening of the cooling tube, and a mercury lamp and a mercury lamp are installed inside the cooling tube. A blow pipe is installed to adjust the temperature of this mercury lamp, and the tip of the blow pipe is fixed to the center of a support plate that fits into the cooling pipe, and a connecting fitting is attached to the center of a rubber cap that is fitted to the cooling pipe. The base end is fixed, and the mercury lamp is bent so that the lamp body is located in the outer circumferential direction of the blast pipe, and both ends of the mercury lamp are clamped with clamping metal fittings and fixed to the blast pipe via the clamping metal fittings. A ventilation hole is formed on the outer periphery of the air duct facing the lamp body, while an exhaust hole is formed in the lid of the rubber cap, and the connecting fitting is clamped in the center of the lid. is a mercury lamp device for a photochemical reaction experiment machine, characterized by forming a dust prevention plate that covers the exhaust hole from above.