KR820002391B1 - Carburetor - Google Patents

Abstract

The basic concept of this invention is to establish the chamber(88), within the internal combustion engine or out, or the compensation air beg(25) which is connected to the carburetor compensation membrane(17) in order that the membrane be influenced by only atm. pressure. Fuel store chamber(12) is linked to high-speed jet(10) and a couple of idle jets(11). Airtight chamber(88) is formed on outside of the compensation membrane(17) and is connected to the compensation air bag in the proper way.

Description

carburetor

The accompanying drawings are cross-sectional views of known correction film type vaporizers, in which the device according to the present invention is installed, at different levels.

FIELD OF THE INVENTION The present invention relates to vaporizers, and more particularly to vaporizers in the form of membranes.

Even when the internal combustion engine is used at a position between its suitable horizontal position and a reverse position, it is known to use a vaporized vaporizer in the form of a membrane to ensure the correct operation and fuel supply of the internal combustion engine.

Such membrane-type vaporizers are used, especially in portable chain saws and boats, in all cases where the line motor, usually an internal combustion engine, is installed in a machine or device in which the position is constantly shaken, tilted or moved due to a particular use . Known membrane-shaped vaporizers are provided with a venturi tube at its center to allow air to pass through the tube to form a combustion mixture, in which high speed and idle jets are stopped. The jet is connected to a fuel storage chamber which is supplied with fuel by a conventional diaphragm pump by interpolating an appropriate adjusting device by a suitable passage. One surface of the diaphragm is brought into contact with the fuel tank and the other surface of the diaphragm faces a camber receiving an operating pulse from the crankcase of the internal combustion engine. In addition, in order to properly operate the motor, the outer wall of the fuel storage chamber is defined by a thin membrane connected to an aged valve inserted between the diaphragm and the fuel storage chamber through a suitable locker arm.

Finally, the surface facing the membrane's fuel storage chamber is in direct contact with the atmosphere to operate under atmospheric pressure, which is why this membrane is often called a correction membrane.

Although handled as described above and designed membrane vaporizers have proven to be suitable for their intended use, these vaporizers are more particularly suitable for use in partially or completely liquids, e.g. If soaked, it has serious drawbacks. Indeed, the operation of the internal combustion engine partially or completely submerged, for example in the case of propulsion in machinery under water, in the case of chain saws used to cut tree trunks blocking river banks, in the heavy rain In the case of overboard motors, in the case of underwater explorers or divers towing and transport, and in all other necessary cases, the carburettor's corrective action will fail because of the hydrostatic pressure at atmospheric pressure suitable for proper operation of the carburetor. Because hydrostatic heads are added, this hydrostatic pressure is defined as the difference between the surface of fresh water, saline or other liquids and the depth in the liquid in which the correction film is located.

The difficulty is to bring the engine to a complete stop, with serious consequences when the internal combustion engine is a propulsion means for underwater search or aquatic machinery or, in particular, on the boat's line of sailing vessels under adverse conditions.

In addition, the correction of the membrane is further damaged by the relative movement between the liquid and the membrane due to the motion of the internal combustion engine with respect to the liquid or the movement of the liquid with respect to the stationary engine. (hydrodynamic read) is added to atmospheric pressure. These challenges are also more pronounced in the case of liquids having a greater hydrostatic or hydrostatic pressure than fresh water, i.e. greater specific gravity than fresh water, eg brine or muddy water, industrial liquids or waste liquors.

In view of the above facts, it is not necessary to pay attention to all the results of the above-mentioned difficulties and eventually stop the internal combustion engine.

The present invention is simple, rational, functional, and reliable, so as to solve the above-mentioned difficulties, a correction membrane which ensures proper operation of the internal combustion engine even when the internal combustion engine is partially or completely immersed in any kind of liquid, especially water. It is intended to protect devices which are particularly suitable for vaporizers of the type.

The basic concept of the present invention is the optimum pressure for the correct operation of the internal combustion engine, and the internal combustion engine is equipped with a compensation air bag or camber connected to a known vaporizer compensator so that the membrane is affected only by atmospheric pressure maintained in a natural or artificial manner. I will install it outside. In summary, the present invention provides for the installation of a hermetic seal on the outer surface of the correction membrane, which is connected to the correction air chamber, that is, the air tank, by a suitable passage.

As an example, the calibrated air chamber has a very thin wall, has a high degree of flexibility and elasticity that is exactly the same as or greater than that of the calibrated membrane, has a specific weight lower than fresh water, and can be a bag capable of withstanding atmospheric pressure and corrosive agents such as sea salt. have. With the present invention the above-mentioned resistance to atmospheric corrosion and "aging" will depend on the internal combustion engine or the particular ambient environment in which the above-described calibrated air bag should be operated. A calibrated air bag can be included in the cage, and the cage and air bag will have buoyancy for the liquids that come into contact.

Although an optional criterion has been proposed for making the air tank into the above described calibrated air chamber, as described more clearly below, it is connected to the outside or within a cam maintained at atmospheric pressure by connecting to means for maintaining a constant operating pressure condition. It can be accommodated outside of the internal combustion engine.

Further advantages, operational features and features of the present invention will be described in more detail based on the following detailed description, the accompanying drawings and the implementation.

The accompanying drawings show a cross-sectional view of a known corrected membrane vaporizer provided with a device according to the present invention from another level, and a vaporized vaporizer having a body 1 has a cavity 2 defining a venturi tube. The conduit 3 connected to the operation chamber 55 is provided on the venturi tube 2. In addition, the fuel suction passage 4 connected to the operation chamber 55 through the elastic valve 44 is installed on the same upper portion of the body 1. As can be seen in the accompanying drawings, the operating chamber 55 is separated into two mutually opposite rooms by the diaphragm 5, the upper side of which is in contact with the conduit 3, the other side of which is in contact with the fuel intake passage 4. do. A fuel pump 7 connected to the intake path 4 through the filter 6 is inserted into the second elastic valve 66 downstream of the operation chamber 55 along the fuel intake path 4. Is installed. At the bottom end of the fuel pump 7 there is a needle valve 18 which cuts off between the fuel accumulation chamber 12 formed at the bottom of the body 1 and the fuel pump 7. The lower end of the needle valve 18 is engaged with the left end of the rocker 16 pivoted on a pin provided in the fuel storage chamber 12, and the other end of the rocker defines a bottom wall of the accumulation chamber 12. It is connected to the balance film 17. In addition, the compression spring 15 is inserted between the left arm of the rocker 16 and the body 1. The fuel storage chamber 12 is connected to the high speed jet 10 and the pair of idle jets 11 by a suitable passage.

As shown, the adjustment needles 13 and 14 are installed in the idle jet 11 and the high speed jet 10, respectively. The jaw valve 8 is provided upstream from the high speed jet 10 according to the flow direction of air in the venturi 2. The throttle valve 9 is provided in the venturi tube 2 downstream from the idle jet.

At the bottom of the body 1, which is outside of the membrane 17, a plate 99 defining a pressure chamber is attached. On the left side of the plate 99, which is opposite the upstream region of the venturi tube 2, a passage 20 connected to another passage existing in the flange 19 pressing the left wall of the body 1 is provided. A passage 20a is formed in the thickened portion 21a formed on the inner surface of the flange 19. On the glass end of the flange 19, an elbow-shaped suction branch pipe 23 having its end connected to the riser 24 of the tank 25 is attached. The brass tube 21 is forcibly attached or sealed to the glass end of the passage 20a, and the rubber tube 22 is fitted to its glass end to attach to the inner surface of the air suction branch pipe 23.

The riser 24 of the air tank 25 will penetrate the interior of the tank until it reaches the top of the air tank, where it is deflected from the connection 28. The tub 29 is attached to the air tank formed spirally outside.

The rubber tube 22 passes through the riser 24 and protrudes from the upper end thereof, and is attached to the inner circumference of the air tank 25 or hangs freely.

This embodiment is shown in dashed lines, where the glass end of the tub 22 is simply connected to the interior of the tank 25 which acts as a calibration chamber for the diaphragm 17 via the tub 22.

In another embodiment, the tubing 22 has a brass tube 26 whose end penetrates into the interior of the container cage or screen. The brass tube is substantially cylindrical, and several holes 31 are formed in the surface and the bottom thereof.

The glass end of the brass tube 26 is hermetically connected to the correction air bag 32. The correction air bag 32 is substantially bag-shaped and made of an elastic body whose specific gravity is smaller than that of fresh water.

The extremely thin walls of the compensating air bag 32 have high flexibility and elasticity and are more resistant to corrosive agents such as atmospheric pressure and sea salt. In addition, the cage 30 also has a specific gravity less than fresh water.

The present invention works as follows.

As will be readily understood by those skilled in the art, the operation of corrected blocking under normal conditions in connection with an internal combustion engine is briefly described below.

As in the prior art, fuel passes through the suction passage 4 to the bottom of the operating chamber 55 by the pumping of the diaphragm 5. The diaphragm 5 is pumped by vibrating through a conduit 3 connected to the crankcase of the internal combustion engine. Each time the center deduction of the diaphragm 5 rises, a vacuum is formed in the fuel intake passage 4 such that the elastic valve 66 is in contact with the seat thereof, while the elastic valve 44 receives the fuel from the tank. When it moves upwards. However, when the diaphragm 5 moves downward, the fuel present in the operation chamber 55 is pressurized to close the elastic valve 44 and open the elastic valve 66 to transfer the fuel to the delivery pipe 7.

During this operation, the internal combustion engine draws air through the venturi tube 2 to form a low pressure to be directed or delivered to the accumulation chamber 12. This low pressure again raises the membrane 17, which lowers the needle 18 by the rocker 16 to flow fuel present in the delivery pipe 7 into the fuel storage chamber 12.

Because of the air passing through the venturi tube 2, assuming that the internal combustion engine is in process at this time, a vacuum is formed in the fuel storage chamber 12 and fuel is introduced into the venturi tube 2 through the idle jet 11. It is fed to air to form a combustion mixture for internal combustion engine with air. According to the apparatus according to the present invention, even if the base plate 99 is completely blocked, it is possible to generate atmospheric pressure necessary for proper operation of the internal combustion engine in the camber 88.

The camber 88 induces atmospheric pressure from the air tank 25 through the passage 20, the passage 20a and the rubber tube 22, which is introduced into the atmosphere through the vent 28 and the vent valve 29. Contact In the case of using the compensation air bag 32, it is made of an extremely thin outer shell with high elasticity and flexibility to detect the internal pressure in the air tank 25, and the interior of the camber 88 without substantially changing this pressure value. To the optimum operating conditions of the correction film 17.

The device according to the invention allows the use of an internal combustion engine associated with a correction membrane molder under various mishandling conditions, especially in the presence of fresh water or brine, because the correction membrane 17 does not come into contact with this liquid, Its outer surface is detected in the air tank 25 by the apparatus because it is kept under atmospheric pressure. This is especially true for internal combustion engines, such as swing motors for boats, propulsion means for machinery for diving navigation, propulsion means for undersea operators or divers loading vehicles, moisture, fresh water or brine or other liquids, for example industrially. It has the great advantage that the portable power saw used in the liquid and / or the waste liquid and the above-mentioned motor can be used when used under the above bad operating conditions.

From the above fact, even when the vaporizer is partially or completely immersed in liquid, the hydrostatic pressure and isostatic pressure are due to the air tank 25 located at the motor station which maintains a constant air pressure because its correction film 17 is directly connected to the outside. It is clear that not all are affected.

The material from which the cage 30 and air bag 32 have a specific gravity at least less than that of fresh water. Condensed moisture or water that penetrates into the interior of the air tank 25 does not affect the operation of the blocker and the internal combustion engine, because the tub (with or without elements 30 and 32) This is because 22) is suspended in the liquid present at the bottom of the tank 25. Once the motor stops, water that penetrates or concentrates in the tank is simply reversed by removing the motor and drained through the drain 28. Cage 30 or strainer 30 is used to protect the ends of tubing 22 that may attach a strainer or water absorbent material. This cage 30 protects the airbag 32 during the movement of a motor that is in operation or that spills water present in the tank 25.

Finally, what is shown in the figures is only an example, and the correction air tank 25 can accommodate any type of container that maintains the atmospheric pressure therein naturally or artificially. Of course, such a housing may not only be formed as part of the motor, but may also be formed separately from it. For example, a secondary and suitable application of the present invention is connected by a diver or an oxygen bottle carried by a SCUBA diver or a diving operator who manipulates a propulsion means that partially or completely submerged in liquid, especially fresh water or brine. This can be done by directly attaching the rubber tube 22 to the camber.

In another example of the present invention, it is evident that the use of the present invention in connection with a calibrated vaporizer can be used in various ways depending on the arrangement of the tubing 22 as long as the atmospheric pressure is naturally or artificially maintained.

Claims (1)

The correction air chamber 25 is naturally or artificially maintained in the correction membrane type vaporizer connected to the venturi tube 2 having the air intake manifold installed in the fuel storage chamber 12 through the idle and the high speed jets 11 and 10. Vaporizer, characterized in that to form a sealed chamber (88) outside the correction film (17) connected to.

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