KR19990020785U - Draft controller of hot air heater - Google Patents

Abstract

The present invention relates to a fuel tank built-in hot air heater for heating by inhaling indoor air and raising the temperature and then releasing it back to the room, in particular, a draft cover installed in a communicating part and a pressure state in the combustion chamber connected to the draft cover by a hinge. And a draft door which is automatically opened and closed so as to discharge combustion gas in the combustion chamber or introduce external air into the combustion chamber, and a first weight controller installed at an upper portion of the draft door to help maintain the balance of the draft door. And by providing a draft control device for a warm air heater comprising a second weight controller is to simplify the structure of the product and the number of parts required to improve the productivity of the product and reduce the defective rate of the product.

Description

Draft controller of hot air heater

The present invention relates to a natural exhaust type hot air heater, and more particularly, to a draft control device of a hot air heater for controlling a pressure in a combustion chamber that generates combustion gas.

As a general fuel tank built-in warm air heater, as shown in FIG. 1, the impurity contained in the case 1, the fuel tank 2 installed at the lower end of the inside of the case 1, and the oil in the fuel tank 2 is removed. Oil filter (not shown) to remove, the electronic pump 3 for pumping the oil supplied through the oil filter to the upper side, and the oil pumped through the electronic pump 3 is burned to generate a high temperature combustion gas A burner (4) to be installed, a front grill (6) installed at a lower portion of the front of the case (1), and introduced into the rear of the front grill (6) to filter out impurities contained in the intake air. The main air filter 7, a blower 8 for blowing air sucked through the air filter 7 upwards, air blown through the blower 8, and generated through the burner 4. Heat exchanger (10) that heats the combustion gases to heat each other , An air outlet 11 for discharging the air warmed through the heat exchanger 10 to the room, an exhaust pipe 12 for discharging the combustion gas, and a communication unit for moving the heat exchanged combustion gas to the exhaust pipe 12 It is configured to include.

Here, when the pressure in the combustion chamber is relatively high or low during initial ignition due to the high pressure of the combustion chamber or the strong reverse wind outside the product, the communication unit automatically opens and closes according to the pressure in the combustion chamber so as to constantly adjust the pressure in the combustion chamber. Draft regulator is installed.

Figure 2 is a front view showing a draft control device of a warm air conditioner according to the prior art, Figure 3 is a half sectional view of Figure 2, Figure 4a is an operating state of the draft control device when the pressure in the combustion chamber is a static pressure, Figure 4b is a combustion chamber It is a state diagram of the operation | movement of a draft control apparatus when internal pressure is negative pressure.

2 and 3, reference numeral 1 denotes a hinge door in which the front door 2 and the rear door 3 are hinged to each other, and the rear door 3 is mounted on the communication unit so as to communicate with each other. And the front door 2 is opened outward when the pressure inside the combustion chamber 5 increases at the time of initial ignition to discharge the combustion gas generated in the combustion chamber 5 to reduce the pressure inside the combustion chamber 5. Play a role.

In addition, reference numeral 4 denotes a ring weight installed at the top of the front door 2 to help the front door 2 maintains balance, and reference numeral 5 denotes the front when opening and closing the front door 2. While absorbing the shock generated between the door 2 and the rear door 3, the combustion gas in the combustion chamber 5 is discharged in the state in which the front door 2 is closed, so that the front door 2 and the rear door 3 are closed. A tape asbestos in the form of a ring is attached to a surface of the front door 2 which is opposite to the rear door 3 to prevent leakage into a gap of the front door 2. In this case, the tape asbestos 5 may be attached to a surface of the rear door 3 facing the front door 2.

In addition, reference numeral 7 is hinged to the front door 2, the pressure inside the combustion chamber 5 during the initial ignition is lowered when the negative pressure is opened inward to supply the outside air to the combustion chamber 5 to supply the combustion chamber (5) ) Represents a draft door that serves to increase the internal pressure.

In the above, the front door (2) is formed with a hole having the same shape as the draft door (7) and the draft door (7) to the front door (2) to support the pin (8) and the pin (8) It is installed so as to be rotatable by the support 9 formed. In this case, the support 9 also supports the pin 8 and at the same time serves as a latch to prevent the draft door 7 from opening outward.

In addition, reference numeral 10 denotes a portion of the support 9 that hangs on the front door 2 so as to absorb a shock when a collision between the front door 2 and the support 9 serves as a cushioning material. A glass fiber 10 in the form of an installed tube is shown. At this time, the glass fiber 10 is attached by a bond bond.

In addition, reference numerals 11 and 12 denote first weight controllers and second weight controllers installed on the top of the draft door 7 to help the draft door 7 maintain balance. 15 denotes bolts, washers and nuts which are respectively installed below the draft door 7 to help the draft door 7 stay balanced.

The warm air heater configured as described above is configured to suck the indoor air and raise the temperature, and then discharge it back to the room.

First, the air in the room is introduced into the case 1 through the air filter 7 according to the operation of the blower 8. At this time, the air filter 7 filters out impurities such as dust contained in the inflowing air.

At the same time, the oil in the fuel tank is purified by the oil filter and supplied to the electronic pump 3, and the oil pumped by the electronic pump 3 to the burner 4 is supplied through the air supply pipe. Together with the burner 4 is burned in the combustion chamber 5. At this time, hot combustion gas is produced as a result of the combustion.

Thereafter, heat exchange is performed between the air raised by the blower 8 and the combustion gas in the heat exchanger, and the heated air is discharged into the room through the air outlet 11 to perform heating. Of course, the heat exchanged combustion gas is discharged to the outside through the communication unit and the exhaust pipe (12).

In the operation of the warm air heater as described above, at the initial ignition of the burner 4, the pressure state in the combustion chamber 5 becomes unstable, at which time the draft control device is operated.

Referring to FIGS. 4A and 4B, first, when the pressure inside the combustion chamber 5 is increased to a positive pressure state, the front door 2 is opened outward and the combustion gas inside the combustion chamber 5 is discharged to the outside. When the combustion gas in the combustion chamber 5 is discharged to the outside, the pressure in the combustion chamber 5 is reduced by that amount.

Thereafter, when the pressure inside the combustion chamber 5 is lowered to become a negative pressure state, the draft door 7 is opened inward, and external air flows into the combustion chamber 5, and when air flows into the combustion chamber 5, The pressure in the combustion chamber 5 is increased. While repeating the above process, the pressure in the combustion chamber 5 is constantly adjusted to a stable state.

However, the draft control device of the warm air conditioner according to the prior art as described above requires 19 components for assembly and is not only complicated in structure, but also the assembling work also includes the front door 2 and the rear door 3, and the front door. (2) Spot welding should be welded when the hinge door 7 is connected and bond work should be carried out when the glass fiber 10 is attached. There are a lot of difficulties. Therefore, the production cost is increased due to the large number of parts and at the same time, the productivity of the product is reduced and the defective rate is increased due to the complicated structure and assembly work.

The present invention has been made to solve the above problems, the structure of the product is simplified by having a draft cover installed in the communication unit and a draft door hinged to the draft cover is automatically opened and closed according to the pressure state in the combustion chamber It is an object of the present invention to provide a draft control device of a warm air heater to reduce the number of parts required to improve the productivity of the product and to reduce the defective rate of the product.

1 is a configuration diagram showing the structure of a typical warm air heater,

Figure 2 is a front view showing a draft control device of a warm air heater according to the prior art,

3 is a half sectional view of FIG. 2;

4a and 4b is an operational state diagram of the draft control device according to the prior art,

5 is a configuration diagram showing a draft control device of a warm air heater according to the present invention,

6 is a cross-sectional view of FIG.

7 is an exploded perspective view of FIG. 5;

8 is a configuration diagram showing a state in which the draft adjustment device is installed according to the present invention,

9a and 9b is an operational state diagram of the draft control device according to the present invention.

<Explanation of symbols for main parts of the drawings>

51: communication part 53: draft cover

53 ': hole 55: first support

57: draft door 59: second support

61: pin 63: first weight controller

65: second weight controller

According to a first aspect of the present invention for achieving the above object, a draft cover installed in the communication unit, and hinged to the draft cover to discharge the combustion gas in the combustion chamber or the outside air according to the pressure state in the combustion chamber There is provided a draft control device for a warm air heater including a draft door that is automatically opened and closed to flow into a combustion chamber.

In addition, according to a second aspect of the present invention, the draft door is provided with a weight controller to help maintain the balance on the top.

In addition, according to the third aspect of the present invention, the draft cover is formed with a hole having the same shape as the draft door, the draft door is seated on the hole.

In addition, according to a fourth aspect of the present invention, the draft cover is formed with a first support having a through hole formed thereon so as to be located at both sides of the draft door, and the draft door is in line with the first support of the draft cover. A second support having a through hole formed thereon is formed to be positioned on the pin, and the pin is inserted into the through flow of the first support and the second support so that the draft door is hinged to the draft cover.

The present invention configured as described above has the advantage that the structure of the product is simplified and the number of necessary parts is reduced from 19 to 9, thereby simplifying the assembly work, thereby improving the assembly and productivity of the product and reducing the defective rate.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

5 is a configuration diagram showing a draft control device of a warm air conditioner according to the present invention, Figure 6 is a cross-sectional view of Figure 5, Figure 7 is an exploded perspective view of Figure 5, Figure 8 is a state in which the draft adjustment device is installed 9A is a diagram illustrating an operation state of the draft control device when the pressure in the combustion chamber is at a constant pressure, and FIG. 9B is a diagram illustrating an operation state of the draft control device when the pressure in the combustion chamber is at a negative pressure.

The draft control apparatus of the warm air heater according to the present invention is a pressure cover in the combustion chamber is hinged to the draft cover 53 and the draft cover 53 is inserted into the communication unit 51, as shown in Figure 5 to 8 The draft door 57 is automatically opened and closed to discharge the combustion gas in the combustion chamber or to introduce external air into the combustion chamber, and is installed on the draft door 57 to balance the draft door 55. It comprises a first weight controller 63 and a second weight controller 65 to help maintain this.

In the above, the draft cover 53 is formed with a hole 53 'having the same shape as the draft door 57, and the draft door 57 is seated in the hole 53'.

In addition, the draft cover 53 is formed with a first support hole 55 having a through hole formed thereon so as to be located at both sides of the draft door 57, and the draft door 57 is provided with the draft cover 53. A second support 59 formed with a through hole is formed so as to be in line with the first support 55 of the (), so that the pins pass through the first support 55 and the second support 59. The draft door 57 is hingedly connected to the draft cover 53 by inserting 61 into an interference fit.

In addition, the first weight controller 63 and the second weight controller 65 are installed in the draft door 57 by coupling bolts 67a and 67b and nuts 68a and 68b.

The draft control device of the warm air heater according to the present invention configured as described above is unstable in the pressure state of the combustion chamber during the initial ignition of the burner, by operating at this time to make the pressure state of the combustion chamber to a stable state by adjusting the pressure in the combustion chamber to a certain degree. Play a role.

9A and 9B, first, when the pressure inside the combustion chamber is increased to a positive pressure state, the draft door 57 is opened outward to discharge the combustion gas inside the combustion chamber to the outside. When the combustion gas in the combustion chamber is discharged to the outside, the pressure in the combustion chamber is reduced by that amount.

Then, when the pressure inside the combustion chamber is lowered to become a negative pressure state, the draft door 57 is opened inward, and outside air flows into the combustion chamber, and when air flows into the combustion chamber, the pressure in the combustion chamber increases by that amount.

While repeating the above process, the pressure in the combustion chamber is constantly adjusted to a stable state.

The draft control device of the warm air heater according to the present invention configured and operated as described above is connected to the draft cover 53 and the hinge cover 53 installed in the communication unit 51, the opening and closing automatically according to the pressure state in the combustion chamber By providing the draft door 57, the structure of the product is simplified, and the number of necessary parts is reduced from 19 to 9, thereby simplifying the assembly work. Therefore, the present invention has the advantage that the assembly performance of the product is improved, the productivity is improved, the defect rate is reduced, and the manufacturing cost is reduced due to the reduction of the number of parts.

Claims (4)

And a draft door installed in a communication unit, and a draft door hinged to the draft cover to automatically open and close the combustion gas in the combustion chamber or to introduce external air into the combustion chamber according to the pressure state in the combustion chamber. The draft control device of the warm air heater. The method of claim 1, The draft door is a draft controller of the warm air heater, characterized in that the weight controller is installed on the top to help maintain balance. The method of claim 2, The draft cover has a hole formed in the same shape as the draft door is a draft control device of the warm air conditioner, characterized in that the draft door is seated on the hole. The method of claim 3, The draft cover has a first support having a through hole formed thereon so as to be located at both sides of the draft door, and the draft door has a second support formed with a through hole so as to be in line with the first support of the draft cover. The earth is formed, the draft control device of the warm air conditioner, characterized in that the pin is inserted into the through flow of the first support and the second support so that the draft door is hinged to the draft cover.