JPS6319691Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a pulsating combustion device that mixes the entire amount of combustion air with fuel as primary air and performs explosive combustion.The device has a structure that allows the necessary forced air supply and ignition spark to be obtained manually only at the beginning of combustion. This has increased its practical value.

Conventionally, in this type of pulsating combustion device, the forced air supply fan that supplies combustion air and the ignition spark device that ignites the mixture are connected to a power source, and each is energized when necessary. Since it is structured to operate, a power source is required as a condition for its installation. However, forced air supply by a forced air supply fan and forced ignition of the mixture by an ignition spark device only need to be carried out for a certain period of time (for example, a few seconds) at the beginning of combustion; after that, the temperature in the combustion chamber increases. Explosive combustion continues due to self-ignition caused by the gas and automatic air supply due to the suction force during exhaust, and the cycle of air supply, ignition explosion, expansion, and exhaust is repeated approximately 50 to 100 times per second, resulting in continuous explosive combustion. It is. Therefore, for example, for small pulsating combustion equipment that does not require pre-purging before operation, the combustion operation can be performed properly without installing a forced air supply fan or ignition spark device that requires a power supply. It is something that can be done.

This idea was created in view of this point, and in a device that mixes the entire amount of combustion air with fuel as primary air and performs explosive combustion, the forced air supply fan and the ignition spark device are manually operated. This makes it possible to obtain the forced air supply and continuous spark that are required only in the early stages of combustion, thereby eliminating restrictions on installation conditions, and also increasing the energy-saving effect by reducing costs.

One embodiment of this will be explained in detail below based on the drawings. A large gear 6 fixed to one end of a drive shaft 5 mounted on a base 3 provided on one side of A through bearings 4, 4' is engaged with the operating handle 7 provided at the other end of the drive shaft 5. The air supply fan F can be manually rotated by rotating it. Reference numeral E denotes an ignition spark device, which is installed on the bottom surface of the base 3 and can be operated by a drive gear 8 fixed to the drive shaft 5. The drive shaft 5 is connected to the operating handle 7.
Spark device E for ignition by rotating the
By manually operating the ignition plug 9, sparks can be emitted continuously from the ignition plug 9. This ignition spark device E uses a continuous piezoelectric device as in the embodiment, and is operated continuously by a drive gear 8 having a large number of hammer drive claws on its outer circumference. Good too. Furthermore, opening operations of gas valves, water supply valves, hot water supply valves, etc. can also be linked to this manual operation device. Note that V in the figure is a disc-type vibrating valve in which the valve body 12 reciprocates between the valve seats 10 and 11 facing each other with a minute gap to open and close the valve openings 13 and 14 alternately. It supplies and disconnects combustion air to the mixing chamber B, and is installed on the lower surface of the wall 15 that partitions the mixing chamber B and the air chamber C. Reference numeral 16 designates a gas nozzle, with its tip end ejection port 17 facing the mixing chamber B so that an appropriate amount of fuel gas is supplied to the mixing chamber B for each cycle. Further, D is a combustion chamber, which faces the electrode of the ignition plug 9, and when the mixture of fuel gas and combustion air mixed in the mixing chamber B is sent to the combustion chamber D, a spark is generated from the ignition plug 9. This causes it to ignite and explode and burn. Note that 18 is a flame trap for preventing backup fire, and 19 is a tail pipe. At the moment of explosive combustion of the air-fuel mixture, the inside of the combustion chamber D acts as a sealed chamber separated by the exhaust pressure repulsion bending part (not shown) of the tail pipe 19, so the explosive combustion exhaust pressure instantly changes. The valve body 12 of the raised disk-type vibrating valve V is raised to close the air introduction valve opening 13, but immediately after that, the exhaust gas in the combustion chamber D is quickly discharged from the bent part downstream of the tail pipe 19 and returned to the combustion chamber D. Because the internal pressure is rapidly reduced, the valve body 12 of the disk-type vibrating valve V is lowered by the supply pressure from the air chamber C, and the air introduction valve opening 13 is opened, and the next cycle of air supply, explosive combustion, expansion, and exhaust is completed. The engine enters a combustion operation, and then repeats the same combustion operation continuously.

In the above configuration, the operation handle 7 is activated at the initial stage of combustion.
By manually rotating the ignition spark device E, the drive gear 8 operates the ignition spark device E to emit sparks continuously from the spark plug 9, and at the same time, the forced air supply fan F is activated by the large and small gears 2 and 6. The combustion air in the rotating air chamber C is forcibly supplied to the mixing chamber B through the rotating air chamber C. After a while, combustion chamber D
As the temperature rises, self-ignition occurs even without a spark, and the air supply operation is automatically performed by the suction force during exhaust, so forced ignition by the ignition spark device E and forced air supply Air supply fan F
Since forced air supply is no longer necessary, explosion and combustion will continue even if these rotational drives are stopped.

As explained above, with this device, forced air supply and continuous spark can be obtained only during startup by manually rotating a single drive shaft, eliminating the need for a power source, and therefore providing extremely advantageous installation conditions. It has the excellent effect of not only reducing costs but also increasing energy saving effects.

[Brief explanation of drawings]

The drawing is a sectional view showing an embodiment of this invention. F... Air supply fan for forced air supply, E... Spark device for ignition, 5... Drive shaft, 7... Operation handle, 2, 6... Gear, 8... Drive gear.

Claims (1)

[Scope of utility model registration request] In a pulsating combustion device that mixes the entire amount of combustion air with fuel as primary air and performs explosive combustion, the drive shaft of the forced air supply fan and the drive shaft of the ignition spark device are linked, and these dual-purpose drive shafts are operated manually. A pulsating combustion device that can be operated with.