JP2008519240A - Liquid fuel combustion equipment - Google Patents

Abstract

The present invention relates to a liquid fuel combustion apparatus having a burner head (114), a liquid fuel storage section (116) for storing liquid fuel, and a pump (118) for sending the liquid fuel from the storage section (116) to the burner head (114). (110) is provided. The pump (118) includes a cylinder (140) and a piston (142) movable with respect to the cylinder (140). Therefore, when the piston and the cylinder move relative to each other in the first direction, the liquid fuel is sent to the cylinder (140). When the piston and the cylinder move relative to each other in the opposite second direction, the liquid fuel is sent out from the cylinder (140). It is. The pump (118) also has an inlet valve (144) that allows liquid fuel to be pumped from the reservoir (116) to the cylinder (140), and pumps liquid fuel from the cylinder (140) to the burner head (114). The outlet valve (146) to allow and sufficient force to cause movement of the piston (142) relative to the cylinder (140) by its own weight, thereby delivering liquid fuel from the cylinder (140) to the burner head (114) It has a movable mass.

Description

  The present invention relates to a combustion apparatus (burner), and more particularly to a liquid fuel combustion apparatus used for appliances such as a stove, a water heater, and a heater. The present invention also relates to an apparatus for supplying liquid fuel to a burner head of a liquid fuel burner.

  Various different types of liquid fuel burners are known. In some of these devices, liquid fuel is pulled up to the core by capillary action and burned there. In other forms, air pressure is applied to the liquid fuel and the liquid fuel is sent to the burner head.

  Such a liquid fuel stove is preferred over an electric device. The reason for this is that electricity may not be readily available, and electrical devices are relatively expensive to operate. However, many of the known liquid fuel burners are relatively unsafe and less efficient.

  It is an object of the present invention to provide a new liquid fuel combustion apparatus that is safe and efficient.

  Furthermore, another object of the present invention is to provide a liquid fuel combustion apparatus that is relatively easy to use.

According to the present invention,
With burner head,
A liquid fuel storage unit for storing liquid fuel;
Having a pump for sending the liquid fuel from the reservoir to the burner head;
The pump is
A cylinder,
A piston movable relative to the cylinder, wherein when one of the piston and the cylinder moves in a first direction relative to the other, the liquid fuel is fed into the cylinder, and one of the piston and the cylinder Is moved in the opposite second direction relative to the other, the piston from which the liquid fuel is delivered from the cylinder;
An inlet valve that allows the liquid fuel to be pumped from the reservoir into the cylinder;
An outlet valve that allows the liquid fuel to be pumped from the cylinder to the burner head;
Liquid fuel combustion with a movable mass, which exerts sufficient force to cause movement of the piston relative to the cylinder by its own weight, thereby delivering the liquid fuel from the cylinder to the burner head An apparatus is provided.

  Preferably, the inlet valve is a one-way valve that feeds the liquid fuel to the cylinder, and the outlet valve is a one-way valve that feeds the liquid fuel from the cylinder.

  In an embodiment of the present invention, the piston can move in the cylinder toward a rising position where the liquid fuel is sent to the cylinder and a lowering position where the liquid fuel is sent from the cylinder.

  In this embodiment, the piston is attached to the burner head via a piston tube, and the piston forms an opening for connecting the cylinder and the piston tube so that fluid flows.

  The moving speed of the piston relative to the cylinder and the speed at which the liquid fuel is delivered from the cylinder are adjusted by a control mechanism that adds variable resistance to the movement of the piston relative to the cylinder.

  The control mechanism has an adjusting screw that applies a variable resistance to the movement of the piston tube.

  In one form of the invention, the piston tube is disposed so as to pass through the bush, and the adjusting screw is screwed into the bush so as to be engageable with the piston tube.

The cylinder is disposed in the liquid fuel storage unit. In this case, the cylinder communicates with the storage section via the inlet valve and a filter.

In one embodiment of the present invention, each of the inlet valve and the outlet valve has a valve closing member,
The valve closing member is movable between an open position and a closed position with respect to the valve seat during normal operation,
In the open position, the valve closing member is spaced from the valve seat and allows one-way flow of the liquid fuel through the valve;
In the closed position, the valve closure member engages the valve seat and blocks the flow of the liquid fuel through the valve. In this embodiment, when the liquid fuel combustion device is inclined with respect to each valve and the liquid fuel flows through the valve in a direction opposite to the one direction which is a normal flow direction of the liquid fuel, the valve The closing member is movable with respect to the valve seat.

  In another embodiment of the invention, the piston is fixed relative to the frame of the combustion device, and the cylinder is movable relative to the combustion device frame. In this embodiment, the movable mass forms part of or is attached to the cylinder, and the piston allows the liquid fuel to be fed into or out of the cylinder. Has a port to allow.

  The combustion apparatus has a frame formed of a tubular member, and the storage portion is formed of at least a part of the tubular member.

  In one configuration, the frame is bent along the sides and the combustion device has a stable mass that self corrects the frame when the combustion device is tilted sideways.

  The stable mass is a movable mass.

  The combustion apparatus has a regulator composed of a valve in order to adjust the strength of the flame in the burner head and the feeding of liquid fuel to the burner head.

  In one embodiment of the present invention, the combustion device prevents the flow of liquid fuel to the burner head when the pressure of the burner head falls below a predetermined magnitude, and the pressure of the burner head is predetermined. A dwell type shut-off device for preventing back pressure movement of the liquid fuel from the burner head to the cylinder when the value exceeds a given value;

The present invention is a pump for sending liquid fuel from a storage unit to a burner head of a liquid fuel combustion apparatus,
A cylinder,
A piston, wherein when one of the piston or the cylinder moves in a first direction relative to the other, the liquid fuel is fed into the cylinder, and one of the piston or the cylinder is opposite to the other. A piston movable relative to the cylinder so that the liquid fuel is delivered from the cylinder when moved in a second direction;
An inlet valve that allows the liquid fuel to be pumped from the reservoir to the cylinder;
An outlet valve that allows the liquid fuel to be fed from the cylinder to the burner head;
A pump having a movable mass, the mass applying sufficient force to cause movement of the piston relative to the cylinder by its own weight, thereby sending the liquid fuel from the cylinder to the burner head .

  Each of the inlet valve and the outlet valve has a one-way valve.

  1 and 2 of the accompanying drawings show a liquid fuel combustion apparatus (burner) according to an embodiment of the present invention. In this embodiment, the liquid fuel burner is a petroleum (paraffin) stove 10. The oil stove 10 includes a frame 12, a burner head 14 attached to the frame, a storage unit 16 for containing oil, and a pump 18 for feeding oil from the storage unit 16 to the burner head 14.

  As shown in FIGS. 1 and 2, the frame 12 includes four legs 20 that are coupled to a base portion 22 of the frame. The leg 20 is formed of a tubular material such as a tubular steel member, for example, and the storage portion 16 is formed inside the hollow leg 20. A removable cap 24 is provided to allow access to the reservoir 16. As shown in the drawing, the upper end of the leg 20 is connected to the cooking container support 26 in order to support a pan, a flat pan, etc. (not shown). Generally, the support 26 has an outer ring 28, an inner ring 30, and four radial limbs 32 that extend across the outer ring and the inner ring.

  With particular reference to FIG. 2, the pump 18 includes a cylinder 34 and a piston 36 that are movable relative to each other. In this embodiment of the invention, the piston 36 is fixed to the frame 12, and the cylinder 34 is movable relative to the frame in the directions of arrows A and B in FIG. The piston 36 includes a first port 38, an inlet valve 40 for drawing the oil in the reservoir 16 into the cylinder 34, a second port 42, and an outlet valve 44 for sending the oil from the cylinder 34 to the burner head 14. Have A fuel line 45 extends from the outlet valve 44 to the burner head 14 and a regulator comprising a valve 46 on the fuel line 45 regulates the supply of oil to the burner head 14, thereby causing the burner head to You can adjust the flame strength.

  The pump 18 has a seal member made of an elastic O-ring between the cylinder 34 and the piston 36. The pump 18 also has a mass (weight) comprised of a ring 50 extending along the circumference of the cylinder 34 as shown. The ring 50 has sufficient weight to move the cylinder 34 in the direction of arrow B so that the oil in the cylinder 34 is delivered to the burner head 14 under pressure.

  The stove 10 also has a duel shut-off device 52 for controlling the flow of oil to or from the burner head 14. As shown in FIG. 2, the duel type shut-off device 52 includes a ball 54 that is movable in a chamber 56 between an upper valve seat (valve seat) 58 and a lower valve seat (valve seat) 60. .

  In practice, the reservoir 16 is filled with oil by removing one of the removable caps 24 and pouring the oil into the reservoir. Thereafter, the removable cap 24 is returned to its original position, and the cylinder 34 is manually moved in the direction of arrow A toward the position shown in FIG. As cylinder 34 moves upward, oil is drawn into the cylinder through port 38 and inlet valve 40. When the cylinder 34 is in the position of FIG. 2, the regulator 46 is opened to flow oil to the burner head 14. Thereafter, the cylinder 34 is released, and the ring 50 applies a force to the cylinder by its own weight and moves the cylinder in the arrow B direction. As the cylinder 34 moves downward, the cylinder applies pressure to the oil in the cylinder. The pressurized oil moves toward the burner head 14, whereby the fuel is burned, and heat energy is supplied from the support portion 26. During cooking, the adjuster 46 is adjusted to supply the desired heat energy to the support 26, and when cooking is complete, the burner head 14 flame is extinguished by closing the adjuster 46.

  The duel type shut-off device 52 that fulfills the safety function may be a conventionally provided one. For example, the shut-off device 52 can be designed such that when the cylinder 34 moves in the direction of arrow B, the oil moves the ball 54 away from the seat 60 and the oil flows to the burner head 14. However, if the flame suddenly disappears and a pressure drop occurs at the burner head, the oil moves the ball 54 toward the seat 58 to close the device, impeding the flow of oil to the burner head 14. On the other hand, when the pressure of the burner head 14 rises above a predetermined magnitude, the ball 54 moves toward the seat 60 and prevents the flow of oil returning to the cylinder 34.

  The ring 50 is disposed so as to be located below the center of gravity of the stove 10, so that if the stove 10 is accidentally tilted to one side, the stove automatically returns to the original state due to the weight of the ring 50. Alternatively, another weight may be provided in the piston 34 or somewhere else in the frame 12 so that the stove automatically returns to its original state.

  The stove also provides a curved handle (not shown) extending upward from the legs 20 to allow the stove to be carried relatively easily and to prevent the stove from tilting toward the cooking vessel support 26. ) May be included.

  Alternatively, the stove 10 may be provided with an oil reservoir remote from the frame 12 and / or a mechanism for raising the cylinder or piston to an operating position, such as a lever system or pulley system, for example.

  The mass (weight) 50 that applies a force to the cylinder 34 to move the cylinder in the direction of arrow B may be integrated with the cylinder or attached to the cylinder. Alternatively, the mass 50 may be arranged to exert a force on the cylinder via one or more pulleys, levers, etc. Furthermore, the liquid fuel burner has been described using a piston / cylinder structure in which the piston 36 is fixed to the frame 12 and the cylinder 34 is movable with respect to the frame. However, the liquid fuel burner is fixed to the frame. It may have a cylinder and a movable piston.

  3 to 6 of the accompanying drawings show another embodiment of the liquid fuel burner according to the present invention. Similar to the embodiment described above, the liquid fuel burner is comprised of an oil stove 110 that includes a frame 112, a burner head 114, a reservoir 116, and a pump 118 for pumping oil from the reservoir 116 to the burner head 114. .

  The frame 112 has four legs 120 connected to each other at the lower end by a base portion 122. The legs 120 are made of, for example, a tubular material such as a tubular steel member, and the pair of legs 120 are connected to another pair of legs by a tubular frame member 124. The frame 112 also includes a cooking container support 126 that supports a pot, a pan, or the like (not shown) in the vicinity of the burner 114. The support 126 typically includes an outer ring 128 and four rims 130 extending inwardly from the outer ring, as shown. In this embodiment of the present invention, the support 126 has a guide 132 that is movable relative to the leg 120 in the vertical direction and engages with the leg 120 during the relative movement.

  Referring to FIGS. 4 to 6, the storage unit 116 includes a substantially cylindrical container 134. The container 134 has an opening 136 for filling the container with oil and a closing member 138 for closing the opening 136. The pump 118 includes a cylinder 140 that is at least partially submerged in the storage portion 116 and a piston 142 that is movable relative to the cylinder 140. The piston 142 has a seal member formed of an elastic O-ring (not shown) for sealing between the piston and the cylinder 140. As clearly shown in FIGS. 4-6, the pump 118 is capable of allowing oil in the reservoir 116 to enter the cylinder 140 and a one-way valve 144 to allow the oil to exit the cylinder. And a one-way valve 146. The one-way valve 144 includes a ball 148 arranged to sit on a pan 150 formed with a central opening 158. Similarly, the one-way valve 146 includes a ball 154 and a pan 156 having a central opening 158. As shown in the figure, the cylinder 140 communicates with the storage unit 116 via a one-way valve 146 and a filter 160. In this embodiment of the invention, the piston 142 is connected to the burner 114 by a piston tube 162 having a one-way valve 146, and the stove 110 is adjusted to add variable resistance to the relative movement of the piston 142 relative to the cylinder 140. Includes screws 164. The adjusting screw 164 is disposed inside a bush 166 through which the piston tube 162 extends. As shown in FIGS. 4 to 6, the cylinder 140 communicates with the piston tube 162 via a port 168 in the piston 142.

  In practice, the reservoir 116 is filled with oil by removing the closure member 138 and pouring the oil into the reservoir. Thereafter, the closing member 138 is returned to its original position, and the piston 142 is manually moved relative to the cylinder 140 to the raised state shown in FIG. As the piston 142 moves upward along the cylinder 140, the piston lifts the ball 148 of the valve 144 open, thereby drawing oil through the filter 160 and the one-way valve 144 into the cylinder 140. When the piston 142 is in the raised position, the ball 148 sits on the pan 150 and closes the valve 144. Therefore, when the piston 142 moves downward relative to the cylinder 140 next, the oil in the cylinder is pushed out to the piston tube 162 through the port 168. The piston 142, piston tube 162 and burner 114 are designed to have sufficient weight to allow the piston 142 to move downward relative to the cylinder 140 when the adjustment screw 164 is released from the piston tube 162. Therefore, even if there is no pot or the like on the support portion 126, the piston 142 can slide downward in the cylinder 140 so as to push oil into the piston tube 162. When a pot or the like is on the support 126, the adjustment screw is adjusted as necessary to achieve the desired flow of oil through the piston tube 162.

  As the oil flows through the piston tube 162, the oil opens the one-way valve 146 and flows to the burner head 14, promoting combustion and supplying thermal energy to the support 126. During cooking, the screw 164 is adjusted to supply the desired heat energy to the support 126. When cooking is complete, the flame of the burner head 14 is extinguished by locking the piston 142 relative to the cylinder 140 using the adjustment screw 164.

  In FIG. 6, the burner is tilted to one side, for example, because the stove is accidentally tilted. As shown in the figure, when the stove is tilted, the ball 148 of the valve 144 rotates and moves away from the opening 152 of the dish portion 150. As a result, the oil is sent back to the storage unit 116, the oil flow to the burner head 114 is blocked, and the burner head extinguishes.

  7 to 9 show a stove according to another embodiment of the present invention. In this embodiment, the stove is similar to the stove 110 in all respects except for the configuration of the one-way valves 244,246. Accordingly, a detailed description of the components of the stove other than valves 244 and 246 is not necessary to fully understand this embodiment of the invention. In general, however, the stove includes a reservoir 216, a cylinder 240, a piston 242, a piston tube 262, and a burner head 214 connected to the piston tube. One way valve 244 allows oil to enter cylinder 240 and one way valve 246 allows oil to leave cylinder 240. Similar to the embodiment shown in FIGS. 3-6, the stove has a filter 260 between the reservoir 216 and the cylinder 240 and an adjustment screw 264 for adjusting the intensity of combustion at the burner head 214.

  With particular reference to FIG. 7, the one-way valve 244 has a load-type valve stem (valve shaft) 248 and a valve seat (valve seat) 250 for receiving the valve stem. Similarly, the valve 246 has a weighted valve stem 252 and a valve seat 254. When the piston 242 moves relative to the cylinder 240 to the raised state shown in FIG. 8, the valve stem 248 is lifted away from the valve seat 250, and oil is drawn into the cylinder 240. When the piston 242 is raised, the valve stem 248 is seated on the valve seat 250, thereby preventing oil from flowing back to the reservoir 216. As the piston 242 moves downward relative to the cylinder 240, oil is expelled through the piston into the piston tube 262, thereby opening the one-way valve 246 and allowing the oil to flow to the burner head 214. The required amount of combustion of the burner head 214 is achieved by adjusting the screw 264. Similar to the embodiment shown in FIGS. 3-6, if the stove accidentally tilts to one side, the weighted valve stems 248, 252 are tilted away from the valve seats 250, 254 and the oil can be returned to the reservoir 216.

  The liquid fuel burner is housed in a housing (not shown) designed to conceal the various parts of the burner.

  Of course, both embodiments shown in FIGS. 3-9 include a safety device comprising a duel-type shut-off device similar to the device 52 described above with respect to FIG. 2 of the drawings.

  Although the present invention has been described above with respect to other types of stoves, it will be appreciated that liquid fuel burners are used to provide heat in various other applications such as, for example, water heaters, furnaces or heaters. May be used.

1 is a perspective view of a liquid fuel combustion apparatus according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional view of the combustion apparatus shown in FIG. 1. The perspective view of the liquid fuel combustion apparatus which concerns on another embodiment of this invention. FIG. 4 is a cross-sectional view of the combustion apparatus of FIG. 3 with the burner head in a lowered state, excluding the frame to simplify the drawing. FIG. 6 is a cross-sectional view similar to FIG. FIG. 6 is a cross-sectional view similar to FIG. The fragmentary sectional view of the liquid fuel combustion apparatus which concerns on other embodiment of this invention which has a burner head in a lowered position. Sectional drawing similar to FIG. 7 with the burner head in the raised position and in an inclined state.

Explanation of symbols

  10: Stove, 12: Frame, 14: Burner head, 16: Storage part, 20: Hollow leg, 22: Base part, 24: Cap, 26: Support part, 28: Outer ring, 30: Inner ring, 32: Limb Part (rim), 34: cylinder, 36: piston, 38: first port, 40: inlet valve, 44: outlet valve, 45: fuel line, 46: regulator, 50: mass, 52: shut-off device, 54: Ball: 56: Chamber (chamber), 58: Upper valve seat (valve seat), 60: Lower valve seat (valve seat), 110: Stove, 112: Frame, 114: Burner head, 116: Storage section, 118: Pump: 120: Leg, 122: Base part, 124: Frame member, 126: Support part, 128: Outer ring, 130: Rim, 132: Guide, 134: Container, 136: Open , 138: closing member, 140: cylinder, 142: piston, 144: inlet valve (one-way valve), 146: outlet valve (one-way valve), 148: ball, 150: pan, 152: opening, 154 : Ball, 156: Dish part, 158: Opening part, 160: Filter, 162: Piston tube, 164: Adjustment screw, 166: Bush, 168: Port, 214: Burner head, 216: Storage part, 240: Cylinder, 242 : Piston, 244, 246: one-way valve, 248, 252: load type valve stem (valve shaft), 250, 254: valve seat (valve seat), 260: filter, 262: piston tube, 264: adjusting screw.

Claims (20)

With burner head,
A liquid fuel storage unit for storing liquid fuel;
Having a pump for sending the liquid fuel from the reservoir to the burner head;
The pump is
A cylinder,
A piston movable relative to the cylinder, wherein when one of the piston and the cylinder moves in a first direction relative to the other, the liquid fuel is fed into the cylinder, and one of the piston and the cylinder Is moved in the opposite second direction relative to the other, the piston from which the liquid fuel is delivered from the cylinder;
An inlet valve that allows the liquid fuel to be pumped from the reservoir into the cylinder;
An outlet valve that allows the liquid fuel to be pumped from the cylinder to the burner head;
Liquid fuel combustion with a movable mass, which exerts sufficient force to cause movement of the piston relative to the cylinder by its own weight, thereby delivering the liquid fuel from the cylinder to the burner head apparatus.   2. The liquid fuel device according to claim 1, wherein the inlet valve is a one-way valve that feeds the liquid fuel to the cylinder, and the outlet valve is a one-way valve that feeds the liquid fuel from the cylinder.   3. The liquid fuel combustion apparatus according to claim 2, wherein the piston can move in the cylinder toward an ascending position where the liquid fuel is sent to the cylinder and a descending position where the liquid fuel is sent from the cylinder.   4. The liquid fuel combustion apparatus according to claim 3, wherein the piston is attached to the burner head via a piston tube, and the piston forms an opening for connecting the cylinder and the piston tube so that fluid flows. .   The liquid fuel combustion apparatus according to claim 1, further comprising a control mechanism that applies a variable resistance to movement of the piston relative to the cylinder.   The liquid fuel combustion apparatus according to claim 5, wherein the control mechanism includes an adjusting screw that applies a variable resistance to the movement of the piston tube.   The liquid fuel combustion apparatus according to claim 6, wherein the piston tube is disposed so as to pass through the bush, and the adjustment screw is screwed into the bush so as to be engageable with the piston tube.   The liquid fuel combustion apparatus according to claim 1, wherein the cylinder is disposed in the liquid fuel storage unit.   The liquid fuel combustion apparatus according to claim 8, wherein the cylinder communicates with the storage unit via the inlet valve and a filter. The inlet valve and the outlet valve each have a valve closing member,
The valve closing member is movable between an open position and a closed position with respect to the valve seat during normal operation,
In the open position, the valve closing member is spaced from the valve seat and allows one-way flow of the liquid fuel through the valve;
10. The liquid fuel combustion apparatus of claim 1, wherein in the closed position, the valve closing member engages the valve seat and blocks the flow of the liquid fuel through the valve.   When the liquid fuel combustion device is inclined with respect to each valve and the liquid fuel flows through the valve in a direction opposite to the one direction, which is a normal flow direction of the liquid fuel, the valve closing member becomes the valve. The liquid fuel combustion apparatus of claim 10, wherein the liquid fuel combustion apparatus is movable with respect to the seat.   The liquid fuel combustion device of claim 1, wherein the piston is fixed with respect to the frame of the combustion device, and the cylinder is movable with respect to the combustion device frame.   The movable mass forms part of or is attached to the cylinder, and the piston has a port that allows the liquid fuel to be fed into or out of the cylinder The liquid fuel combustion apparatus according to claim 12.   The liquid fuel combustion apparatus according to claim 12 or 13, wherein the combustion apparatus includes a frame formed of a tubular member, and the storage portion is formed of at least a part of the tubular member.   15. The liquid fuel combustion device of claim 14, wherein the frame is bent along a side and the combustion device has a stable mass that self corrects the frame when the combustion device is tilted sideways.   The liquid fuel combustion apparatus of claim 15, wherein the stable mass is a movable mass.   The liquid fuel combustion apparatus according to any one of claims 12 to 16, wherein the combustion apparatus includes a regulator composed of a valve in order to adjust the feeding of the liquid fuel to the burner head and the strength of the flame in the burner head.   The combustion apparatus prevents the flow of liquid fuel to the burner head when the pressure of the burner head falls below a predetermined magnitude, and when the pressure of the burner head exceeds a predetermined value. The liquid fuel combustion apparatus according to any one of claims 1 to 17, further comprising a duel type cutoff device for preventing back pressure movement of the liquid fuel from the burner head to the cylinder. A pump for sending liquid fuel from a storage unit to a burner head of a liquid fuel combustion device,
A cylinder,
A piston, wherein when one of the piston or the cylinder moves in a first direction relative to the other, the liquid fuel is fed into the cylinder, and one of the piston or the cylinder is opposite to the other. A piston movable relative to the cylinder so that the liquid fuel is delivered from the cylinder when moved in a second direction;
An inlet valve that allows the liquid fuel to be pumped from the reservoir to the cylinder;
An outlet valve that allows the liquid fuel to be fed from the cylinder to the burner head;
A pump comprising a movable mass that applies sufficient force to cause movement of the piston relative to the cylinder by its own weight, thereby delivering the liquid fuel from the cylinder to the burner head.   20. The pump of claim 19, wherein the inlet valve and the outlet valve each have a one-way valve.

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