METHOD OF PRODUCING FUMES IN MODEL APPARATUS

Abstract: A fuming or smoke-emitting device used on a model steam locomotive of railway model driven by an electric motor. This model locomotive is accurately and precisely reduced in a predetermined scale from an actual locomotive. The scale recently tends to mainly become large. It is therefore required to reduce the fuming device as much as possible and to simulate the smoke exhausted from the actual locomotive in the smoking state. These requirements are critical. The achievement of the emission of smoke of the model locomotive requires a special design of the corres­ ponding mechanism. This fuming device comprises a con­ tainer which has therein Nichrome wire and is provided at its upper portion with perforation for exhausting the fume or smoke. The container is filled with an isolated liquid mixture of water and oil having non-affinity with each other. When the heater is heated, the water is boiled to thereby stir the oil of the liquid mixture. Thus, the oil is burnt, and the smoke of fume thus produced is exhausted by the steam. The fuming state by this combustion phenomenon simulates the smoke exhausted from the actual locomotive, because this fume thus exhausted from the locomotive is similar in principle to the utilization of the steam exhausted usually from the normal cylinder. This fuming device is extremely small and simple in structure, and not restricted in its configuration design. Accordingly, this device is adapted to be carried on the model locomotive.

Description: DESCRIPTION FUMING METHOD Technical field: The present invention relates to a fuming or smoke-emitting device to simulate the smoke exhausted from the model steam locomotive and the model ship, etc. And more particularly, it is suitable for use on a model steam locomotive of railway. The railway model is different from toys, and its reduced scale and the method of operation are, to some degree, internationally standardized. As for the reduced scale, except minor ones, the two reduced scales are mainly adopted; one is refered to HO-gauge whose reduced scale of model train is about 1/80, another is refered to N-gauge whose reduced scale of model train is about 1/160. As the model locomotive recently tends to become small, N-gauge has been prevailing. The method of operation mostly used is the remote control to supply electric power in the rail from the transformer, fron which, through the wheels, the moter gets the driving power. In the smoking state of the fuming device, it is required to simulate the smoke exhausted from the actual smoke locomotive. Although it may be possible to simulate the smoking state regardless of the size of the device and its production cost, the space to load the fuming device is, in actual fact, very restricted due to the reduction of the locomotive and other driving devices. Therefore it.is required to reduce the size of the fuming device as much as possible,. These requirements are critical. It seems to.be impossible to make a small device by means of any mechanical design. So the technical problem is to answer the both requirements; that is, precise simulation of smoking state and reduction of the fuming device. Background art: Any fuming method, tried so far, uses smoke produced by burning oil, and there are two general methods for exhausting the produced smoke, namely one has recourse to the machanical device for burning and another has recourse to an air blower. In the former method, the smoking state has not-been performed satisfactorily and the latter method requires an exaggerated device. However, one couldn't help compromising in using them to Bome extent. Some types of fuming devices are sold now. among the prod'its appeared in the "Tetsudo Mokei Shumi(Hobby of the Railway Model)", which is the Japanese special book of railway model, typical one is the product of West Germany which is the example of the specially designed device for burning. In the following, the explanation of the device i cited and summarized. "In West Germany, SEUTE sells some kinds of fuming devices. In Japan, the devices of product-numbers 99 and/or 100 for HO-gauge are familiar. Inner structure is very simple; there stands a thin steam pipe like an injection-needle in its center, and the upper part of it, about 7 mm long, is a heater with thin Nichrome wire wound. The oil for burning is stored in the botton of the device and the oil is pumped due to capillarity action in the pipe, then heated and evaporated by the heater and ejected upward. This process is made intermittently, so the white smoke continues to eject so long as the oil exists. But the following comments are made that the smoking state doesn't resemble and the amount of the smoke is too little and that the power of ejection is too little. The size of the device is relatively small, but the burning method requires the device to be set vertically, so the model locomotives available to the device are limited. Another typical product is one of Japan. In the following, the explanation of the device is cited and summarized. "A fuming device whose chamber for making smoke and blower are separated, and is designed for tender. That the amount of smoke is enough and the smoking state varies in accordance with the speed of the locomotive is characteristic." The device is limited to some particular locomotives for use, however, the smoking state is highly estimated. Disclosure of invention: According to the present invention, to make the smoke, the oil is burned, however, the characteristic point is that the isolated liquid mixture of water and oil having non-affinity with each other is burned. Concrete explanation is given below. The Ni chrome wire is put as a heater iax a container with perforation for a chimney at its upper portion. Tlirough the chimney, an isolated liquid mixture of water and oil having non-affinity with each other, is put into the container. Then the elaofric power is supplied to the Nichrome and heat the wire, so the smoky begins to eject from the chimney, and it is mimilar to the fume or smoke of a real steam locomotive. In viewing the burning state using a transparent container, the process seems as follows. As the boiling temperature of water is lower than that of¯oil, the boiled water stirs the oil of the liquid mixture. Moreover, as the water and oil have non-affinity with each other, the droplets of water and oil are formed when the mixture is heated. The droplets of oil burn and produce smoke in an instant when they touch the Ni chrome wire which is barely exposed due to the boiling and stiring of the liquid mixture. It seems that the produced smoke is ejected from the chimney due to the expansion in volume of water vapor which is evaporated when the droplets of water touch the Nichrome wire. The phenomenon that the water droplet, sometimes fallen into the heated oil, bursts are easily found in daily life such as cocking. But to burn the mixture of oil and water is essentially intentional. And the burning state is very suitable for simulating the fume or smoke of the actual steam locomotive. It is appaw rent that the fuming state by this combustion phenomenon simulates the smoke exhausted from the actual locomotive, because this fume thus exhausted from the locomotive is similar in principle to the utilization of the steam exhausted usually from the normal cylinder. This invention makes it possible to make a small device because it doesn't require any special mechanical design, so this fuming device is extremely small and simple in structure, and not restricted in its configuration design. Accordingly, this device has an advantage in that it is adapted to be carried on the model locomotive. Best mode of carrying out the invention: To make a container with perforation for chimney at its upper portion, and on the lowest part in the container the Nichrome wire is put as a heater, two edges of the Nichrome wire are got out from the container. To pour oil and water, having non-affinity with each other, through the chimney into the container. Drinking water is available and the kerosene is suitable. The ration of water to oil depends on the volume of the container, but about 2 to 1 is suitable. Industrial applicability: In Japan, the device is already sold. Its low cost and utility, compared with ordinary ones, are highly estimated.

Claims: Claim: 1. FUMING METHOD which uses fume or smoke produced by burning an isolated liquid mixture of water and oil having non-affinity with each other by means of a heater set threin.

Inventors: TAMURA, MUNEO
Applicants: TAMURA, MUNEO
Application year: 1980
Main classification: A63H19
IPC codes: A63H19