KR100201415B1 - Apparatus for cooling the control unit of an open-carburetor type petroleum heater - Google Patents

Abstract

The present invention relates to a control unit cooling apparatus of an open vaporized petroleum heater, the open type vaporized petroleum heater having a control unit structured to secure the microcomputer PCB between the upper support plate and the lower support plate inside the control case: a blower for combustion An orifice formed on one side of the bottom plate and an air inlet flow passage for guiding the air flowing out of the orifice and sent to the space between the upper support plate and the lower support plate of the control unit By providing the control unit cooling device, by cooling the control unit so that the ambient temperature of the microcomputer PCB of the control unit is not higher than the proper operating temperature, the life of the control unit can be extended and stable control can be achieved.

Description

Control chiller of open type evaporative oil heater

The present invention relates to a controller cooling apparatus of an open vaporized petroleum heater, and in particular, by maintaining the temperature around the microcomputer PCB of the controller at an appropriate operating temperature for the microcomputer to operate properly, the life of the controller can be extended and stable control can be made. A control unit chiller of an open vaporized petroleum heater, which is suitable for use.

An open vaporized petroleum heater is a heating mechanism that generates radiant heat by heating a radiator to be heated by combustion heat of petroleum as fuel, and heats it by natural convection by the combustion heat itself. As shown in FIG. 1, which is a front view showing a partial cross section, a fuel supply device for supplying fuel, a combustion device for combusting fuel supplied by the fuel supply device, and combustion heat by operation of the combustion device. Heat radiating device which is heated by heat to generate radiant heat, a case (1) which supports the heat radiating device and maintains the overall appearance of an open vaporized petroleum heater, and a control unit which controls the operation of the open vaporized petroleum heater ( It consists of 2).

In more detail, the conventional open-type evaporative petroleum heater, the fuel supply device is located in the lower portion of the open-type evaporative petroleum heater, the fuel tank (3) and the upper side of the fuel tank (3) A fuel passage 4 installed to be attached to the fuel pump 4 and a lower portion of the fuel pump 4 and extending to the vicinity of the bottom surface of the lower portion of the fuel tank 3 to suck up the fuel pump 4 And a discharge oil supply pipe 6 attached to the upper portion of the fuel pump 4 to guide the fuel sucked up from the fuel tank 3 to the combustion device.

In addition, the combustion device has a cylindrical shape having a closed bottom surface and a vaporizer 7 for vaporizing liquid fuel, and a vaporizer on the outer circumferential surface of the vaporizer 7 having a constant height upward from the bottom surface of the vaporizer 7. A preheating heater 8 which is embedded horizontally with the bottom surface of 7 to supply the vaporizer 7 with heat for vaporizing liquid fuel, and a preheater 8 which preheats the vaporizer 7, and a lower part of the vaporizer 7. A preheating detection thermistor 9 installed on the preheat heater 8 to detect a preheating temperature of the vaporizer 7 preheated by the preheater 8, and on one side between the bottom surface of the vaporizer 7 and the preheater 8. It is formed integrally or detachably and protrudes into the vaporizer 7 through the nozzle 10 coaxially with the nozzle 10 and the nozzle 10 to supply combustion air to the interior of the vaporizer 7. A needle (1) extending and injecting fuel supplied from the discharge oil supply pipe (6) An injection section consisting of 1), a separation piece 12 provided inside the vaporizer 7 for dividing a mixture of combustion air and fuel injected by the injection part, and the separation piece 12 The carburetor cap 13, which forms a flow path so that the combustible mixer, which is a mixture of fuel and combustion air, divided by one, flows again in one direction, and covers the upper portion of the carburetor 7 and the carburetor cap 13 Electric sparks are generated in the burner head 14 formed around the flame hole 14a through which the flammable mixer discharged through the flow path of the discharge is discharged, and the flammable mixer discharged through the salt hole 14a of the burner head 14, thereby generating a burner. Spark plug (not shown) for forming a flame in the flame hole (14a) of the head 14, a salt detector (not shown) for detecting the flame generated from the burner head 14, and the burner head 14 Heated by the flame formed in the salt hole 14a, By transferring heat to the vaporizer group 7 it is composed of the port ring (15) for so as to vaporize the liquid fuel injected by the injector.

On the other hand, the air supply device for combustion to be supplied to the nozzle 10 by the rotation of the combustion fan 17 which is located in the lower portion of the carburetor (7) driven by the combustion motor (16). The blower 18 is comprised.

The heat dissipating device is installed on the upper side of the combustion device, and the heat dissipating device has a cylindrical appearance having a plurality of holes formed around it, and is heated by the heat of combustion of the fuel to radiate radiant heat and cause natural convection to perform heating. The radiator 19 is fixed to the radiator 19 by a radiator holder 20 having one end fixed to the upper side and the other end fixed to the inner upper part of the case 1.

When power is applied to a conventional open-type vaporized petroleum heater having the structure as described above, first, the vaporizer 7 is preheated by the preheating heater 8 embedded in the outer circumference of the vaporizer 7, and the vaporizer ( When the preheating thermistor 9 senses the preheating degree of 7) that the preheating has been sufficiently performed, the combustion blower 18 operates to burn the combustion air through the nozzle 10 to the inside of the vaporizer 7. To be supplied.

Thereafter, after a predetermined time, the pre-purge step is performed, and when the pre-purge is completed, fuel is injected into the carburetor 7 through the needle 11 and the combustion air is already supplied into the carburetor 7. By primary atomization. The liquid fuel droplets injected into the vaporizer 7 and the liquid fuel vaporization gas and the combustion air are evaporated by the heat of the vaporizer 7 which is preheated by hitting the wall surface of the vaporizer 7 opposite the injector, thereby causing the nozzle 10 to evaporate. It is mixed with the combustion air supplied through to form a combustible mixer.

The combustible mixer thus formed is exhausted into the flame holes 14a of the burner head 14 through a flow path formed in the vaporizer cap 13, and combustion is started by an electric spark generated by the spark plug (not shown). A flame is formed in the salt hole 14a.

Then, when the flame detector (not shown) detects that a flame is formed in the flame hole 14a, the spark plug (not shown) stops discharging, and the combustion device performs combustion in a normal state, and the radiator (heat) as the combustion heat. 19) is heated to generate radiant heat and to be heated by natural convection caused by combustion heat.

In addition, the flame generated from the burner head 14 surrounds the burner head 14 and heats the port ring 15 mounted on the upper portion of the vaporizer 7, and the port ring 15 is the vaporizer 7. By transferring the heat of the furnace, the liquid fuel injected in the vaporizer 7 is effectively evaporated, thereby improving combustion performance.

On the other hand, the control unit 2 is a part for performing the function of controlling each process, as shown in FIG. 2, which is a cross-sectional view showing an enlarged view of the conventional control unit 2, the control unit case 21 A space enclosed by the upper support plate 22 and the lower support plate 23 is formed therein, and the microcomputer PCB (not shown) is fixed to the space.

As described above, the control unit 2 of the conventional open-type evaporative petroleum heater is a closed space. When the combustion device is operated to dissipate high temperature heat, heat is transferred through the control case 21 to the upper portion. As the temperature of the enclosed space inside the support plate 22 and the lower support plate 23 becomes high temperature, the stable control is not performed due to malfunction of the microcombine (not shown) therein and the life of the control unit 2. There was a problem that is shortened.

Therefore, the object of the present invention devised in recognition of the above problems is to extend the life of the control unit and to ensure stable control by cooling the control unit so that the ambient temperature of the microcomputer PC of the control unit is not higher than the appropriate operating temperature. The present invention provides a control unit cooling apparatus for an open vaporized oil heater.

1 is a front view showing, in partial cross-section, the structure of a conventional open vaporized petroleum heater.

2 is an enlarged cross-sectional view of the controller of FIG. 1.

3 is a cross-sectional view showing the structure of a controller cooling device of an open vaporized petroleum heater according to an embodiment of the present invention.

4 is a cross-sectional view taken along the line AA ′ of FIG. 3.

5 is an enlarged cross-sectional view of the orifice of FIG.

6 is a cross-sectional view taken along the line B-B 'of FIG.

Figure 7 is a front view showing the front shape of the discharge port of the control unit cooling device of the open-type vaporized petroleum heater of one embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1 case 2 control unit

3: fuel tank 4: fuel pump

5: suction oil pipe 6: discharge oil pipe

7: Carburetor 8: Preheat Heater

9: preheating detection thermistor 10: nozzle

11: needle 12: separation

13: carburetor lid 14: burner head

14a: flame 15: port ring

16 combustion motor 17 combustion fan

18: combustion blower 19: radiator

20: radiator holder 21: control case

22: upper support plate 23,23 ': lower support plate

24: bottom plate 25: orifice

26: air inflow passage 27: lower plate

28: lower air guide 29: air hole

30: upper air guide 31: discharge port

32: half-moon-shaped protrusion

In order to achieve the object of the present invention as described above, in the open type vaporized petroleum heater having a control unit having a structure in which the microcomputer PCB is fixed between the upper support plate and the lower support plate inside the control unit case; An open vaporization type comprising an orifice formed on one side of the bottom plate of the combustion blower, and an air inflow passage for guiding the air flowing out of the orifice and discharging it to a space between the upper support plate and the lower support plate of the controller. A control unit cooling apparatus of an oil heater is provided.

Hereinafter, the present invention will be described in detail based on an embodiment of the present invention shown in the accompanying drawings.

3 is a cross-sectional view showing the structure of a controller cooling apparatus of an open vaporized petroleum heater according to an embodiment of the present invention. As shown in the drawing, the controller cooling apparatus of an open vaporized petroleum heater according to the present invention is for combustion. An orifice 25 is formed at one side of the bottom plate 24 positioned below the combustion fan 17 of the blower 18 to introduce a part of the combustion air supplied by the combustion fan 17. An air inflow passage 26 is formed to guide the air flowing out from the 25 to be discharged into the space between the upper support plate 22 and the lower support plate 23 of the control unit 2.

At this time, the air inflow passage 26 allows the air introduced from the orifice 25 to the bottom plate 24 and the bottom plate 24 of the combustion blower 18 outside the combustion blower 18. A lower air guide 28 guided along a lower portion of the lower plate 27 extending to the lower air guide 28, an air hole 29 formed at one side of the lower plate 27, and the lower plate 27 from the air hole 29. The upper air guide 30 for guiding the air flowing into the upper side to one side of the lower support plate 23 ′ inside the control unit case 21, and formed on one side of the lower support plate 231 and the upper air guide 30. It is preferable that the discharge port 31 is discharged into the space between the upper support plate 22 and the lower support plate 23 is connected to the.

In addition, as shown in FIG. 4, which is a cross-sectional view taken along the line AA ′ of FIGS. 3 and 3, the orifice is placed at the front end of the upper surface of the orifice 25 of the bottom plate 24 of the combustion blower 18. It is preferable that a half-moon-shaped protrusion 32 is formed to allow a sufficient amount of air to flow into the 25, and the air flows through the orifice 25 so as to block the air that is rotated by the combustion fan 17. ) To inflow.

The orifice 25 may be a simple hole formed in the bottom plate 24, but as shown in FIG. 5, which is a cross-sectional view showing an enlarged orifice 25 of FIG. It is preferable to allow the air to flow smoothly into the orifice 25 by reducing the flow path resistance by forming the flow path.

In addition, the position and size of the orifice 25 is appropriately determined so that the operating temperature of the appropriate control (part 2) can be maintained even at the maximum operating temperature of the open gas fired petroleum heater.

FIG. 6 is a cross-sectional view taken along the line B-B 'of FIG. 3, and the lower air guide 28 guiding air from the lower side of the lower plate 27 is formed with a U-shaped flow path. It is preferable that the wings protrude on both sides of the upper side to be coupled to the bottom of the lower plate 27, and the upper air guide 30 is also preferably in a similar shape.

In the discharge port 31, as shown in FIG. 7 showing the front shape of the discharge port 31, it is preferable that a plurality of through holes are formed so that the inflow of air is rectified.

In the control unit cooling apparatus of the open-type gas-fired petroleum heater of the present invention having the structure as described above, the combustion blower 18 operates to introduce combustion air into the interior of the vaporizer 7 through the nozzle 10. In addition, a part of the combustion air is supplied through the orifice 25 and the air inlet flow path 26 to the microcombe (not shown) between the upper support plate 22 and the lower support plate 23 by the microcombe (not shown) To cool.

In addition, the present invention relates to a controller cooling apparatus applied to an open vaporized petroleum heater, but the basic idea of the present invention is applicable to a general heater having a blower and a controller for combustion.

The control unit cooling apparatus of the open-type vaporized petroleum heater of the present invention having the structure as described above continuously cools the control unit while the combustion blower is operated, thereby controlling the control unit so that the ambient temperature of the control unit is not higher than the proper operating temperature. By cooling, the life of the control unit can be extended and stable control can be achieved.

Claims (4)

An open vaporized petroleum heater having a control unit having a structure in which a microcomputer PCB is fixed between an upper support plate and a lower support plate inside a control case. An orifice formed on one side of a bottom plate of a combustion blower, and air flowing out of the orifice. The control unit cooling apparatus of the open-type evaporative petroleum heater, characterized in that it comprises a guided air inflow passage to be sent to the space between the upper and lower support plates of the control unit. According to claim 1, wherein the air inflow passage is a lower air guide for guiding the air introduced from the orifice along the bottom of the bottom plate of the combustion blower and the bottom plate extending to the outside of the blower, and one side of the bottom plate An air flow formed in the upper air guide to guide the air flowing into the upper side of the lower plate from the air flow to one side of the lower support plate inside the controller case, and formed on one side of the lower support plate and connected to the upper air guide. And a discharge port for discharging the air introduced into the space between the upper support plate and the lower support plate. The control apparatus of claim 1, wherein a semi-moon-shaped protrusion is formed at a front end of the combustion blower bottom plate upper surface orifice to allow a sufficient amount of air to flow into the orifice. 3. The controller cooling apparatus of claim 2, wherein a plurality of through-flows are formed in the discharge port.

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