JPS5855322Y2 - liquid fuel combustion equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a liquid fuel combustion device in which oil controlled by an oil amount regulator and combustion air from a blower are sent to a burner for combustion.

Generally, in this type of combustion apparatus, the responsiveness of ignition and extinguishing is poor, so the room temperature is currently adjusted by changing the amount of oil.

For this reason, when the room temperature rises and a room thermostat is activated, the amount of oil supplied to the burner decreases, resulting in an excess of combustion air and a reduction in thermal efficiency.

Therefore, in order to eliminate these drawbacks, the sealed oil flow regulator is divided into two parts, an oil inflow part and an oil outflow part, by a partition plate, and the two are communicated in oil. A method has been proposed in which the blowing pressure of the combustion air supplied to the burner and the internal pressure of the burner are applied to the oil outflow section, respectively, and the combustion air and the amount of oil supplied to the burner are made proportional to perform combustion.

However, even in this case, the pressure difference between the inside and outside of the burner was 3 m.
Since the pressure difference is only about m, it is difficult to adjust the relationship between this differential pressure and the oil amount.Also, as mentioned above, in order to utilize the differential pressure inside and outside the burner, an oil amount regulator must be installed for each burner. was there.

The present invention has been made to eliminate the above-mentioned drawbacks, and a constriction part is provided in the intake passage of the blower, and the pressure upstream and downstream of this constriction part is applied to the oil inflow part and the oil outflow part of the oil amount regulator, respectively. This allows the pressure difference between the two to be large.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 is a heat exchanger, 2 is a pot burner installed at the bottom of the heat exchanger 1, and 3 is an air chamber formed between the heat exchanger 1 and the pot burner 2.

Reference numeral 4 denotes an intake passage, one end of which is open outdoors and the other end communicated with the air chamber 3.

5 is a combustion blower provided in a part of the intake passage 4; 6 is a constriction part also provided in a part of the intake passage 4; Create a corresponding pressure difference.

Reference numeral 7 denotes an exhaust pipe, one end of which is connected to the upper part of the heat exchanger 1, and the other end protrudes outdoors.

Reference numeral 8 denotes a sealed oil amount regulator, the interior of which is divided into two parts by a partition plate 9 into an oil inflow part 10 and an oil outflow part 11, and both are communicated through an oil passage hole 12 provided at the bottom of the partition plate 9. There is.

13 is an oil pipe that supplies oil from an oil tank (not shown) to the oil inlet 10, and 14 is a float provided in the oil inlet 10 to control the amount of oil sent from the oil pipe 13 to a constant amount. .

Reference numeral 15 denotes an oil spill pipe, with one end facing into the oil spill part 11 of the oil amount regulator 8, and the other end connected to the bottom of the pot burner 2, and the tip on the oil spill part 11 side has a substantially U-shape. shaped slit 16
The lower end of the slit 16 is located slightly above the oil level of the oil amount regulator 8 when there is no wind.

17 and 18 are communication pipes, one end of which communicates with the oil inlet part 10 of the oil amount regulator 8, and the other end with the throttle part 6.
It is connected to the intake passage 4 on the more upstream side.

The other connecting pipe 18 has one end connected to the oil outflow section 11 of the oil amount regulator 8, and the other end connected to the intake passage 4 downstream of the throttle section 6.
is in contact with.

The present invention has the following configuration. When the combustion blower 5 is driven during use, combustion air is sucked into the intake passage 4 from the outdoors, passes through the constriction part 6 and the air chamber 3, and is drawn into the combustion air blower 5. is supplied to burner 2.

On the other hand, this creates a pressure difference (several mm or more) determined by the capacity of the combustion blower 5 and the hole diameter of the ridge 6 upstream and downstream of the throttle part 6 of the intake passage 4, and the pressure difference on the upstream side of the throttle part 6 is Pressure is applied to the oil inflow portion 10 of the oil amount regulator 8 through the communication pipe 17, and low pressure downstream of the throttle portion is applied to the oil outflow portion 11 of the oil amount regulator 8 through the communication pipe 18.

The oil level in the oil inflow part 10 is constant due to the action of the float 14, but the oil level in the oil outflow part 11 rises corresponding to the pressure difference between upstream and downstream of the throttle part of the intake passage 4, and the slit 16
From there, oil is supplied to the pot burner 2 through the oil outflow pipe 15 and burned.

Here, in order to raise the room temperature, the rotation speed of the combustion blower 5 is increased, and the pressure difference between upstream and downstream of the constriction part in the intake passage 4 increases, and accordingly, the oil spill part 11 of the oil amount regulator 8 increases.
The liquid level becomes higher, and the amount of oil flowing from the slit 16 to the oil outflow pipe 15 and the burner 2 increases, resulting in an increase in the amount of combustion.

On the other hand, when lowering the room temperature, by lowering the rotation speed of the combustion blower 5, the pressure difference between upstream and downstream of the throttle part in the intake passage 4 also decreases, and the liquid level at the oil outflow part 8 of the oil amount regulator 8 also decreases, causing the slit to drop. The amount of oil flowing from 16 to oil spill pipe 15 and pot burner 2 also decreases, and the amount of combustion decreases.

When the combustion blower 5 stops, the pressure difference between the upstream and downstream sides of the constriction part 6 disappears, so the liquid levels in the oil inflow part 10 and oil outflow part 11 of the oil amount regulator 8 become equal, and the liquid level is lower than the slit 16. level and the oil spill is stopped.

Figure 2 shows the relationship between the amount of air blown by the combustion blower and the amount of oil, where the range A is the good combustion range and the line a is the efficiency 90%.
, b, and C have efficiencies of 70% and 50%, respectively.

According to the present invention, the best combustion can always be achieved by line a.

As explained above, the present invention is a burner in which oil controlled by an oil volume regulator and air from a combustion blower are sent to a burner for combustion, and the oil volume regulator is partitioned into an oil inflow part and an oil outflow part. , and while connecting the two, a constriction part is provided in the air passage of the blower, the upstream side of the constriction part is connected to the oil inlet part of the oil amount regulator, and the downstream side air passage is connected to the oil outflow part. By setting the capacity of the combustion blower and the hole diameter of the throttle part appropriately, it is possible to set the pressure difference applied to the oil flow regulator's oil inlet and oil outlet parts to the best value. Therefore, there is an advantage that the amount of air blown to the burner and the amount of oil can be varied at the same time to always perform stable combustion with the best thermal efficiency.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the liquid fuel combustion device of the present invention, and FIG. 2 is a characteristic diagram thereof. In the figure, 2 is a pot burner, 4 is an intake passage, 5 is a combustion blower, 6 is a throttle part, 8 is an oil amount regulator, 10 is an oil inflow part, 11 is an oil outflow part, 16 is a slit, 17, 18 is a connecting pipe.

Claims (1)

[Scope of utility model registration request] Oil controlled by an oil amount regulator in the burner,
In a device that sends air from a combustion blower to cause combustion, the oil amount regulator is partitioned into an oil inflow part and an oil outflow part, and the two are connected, and a throttle part is provided in the air passage of the blower to A liquid fuel combustion device in which an upstream air passage of the throttle part is connected to an oil inflow part of the oil amount regulator, and a downstream air passage is connected to an oil outflow part.