JPH04136459U - oil hot air heater - Google Patents

Abstract

(57) [Summary] [Structure] A plurality of burner heads 22 are provided, a combustion tube 23 is disposed above each burner head 22, and a first and second heat exchanger 24, 25 are installed in the combustion tube 23. In the oil hot air heater 10 to which the combustion tube 23 is connected, the second heat exchanger 25 is formed corresponding to the combustion tube 23, and at least one of the second heat exchangers 25 is located behind the combustion tube 23 and An oil hot air heater placed between the combustion tubes 23. [Effect] The air from the hot air blower 27 as in the past does not pass between the combustion tubes 23 or between the second heat exchangers 25 to exchange sufficient heat, and the air is directly generated by the hot air blower 10. can prevent it from blowing out over the entire surface of the
All the air from the warm air blower 27 comes into direct contact with the combustion tube 23, the first heat exchanger 24, and the second heat exchanger 25, reducing heat loss and improving heat exchange efficiency. .

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an oil hot air heater, more specifically, it is equipped with multiple burner heads, A combustion tube is disposed above each of these burner heads, and first and second heat sources are provided in the combustion tube. Relating to an oil hot air heater connected to an exchanger.

0002

[Conventional technology]

A conventional oil hot air heater will be explained based on the drawings. 11 in Figures 10 and 11 is This is a main body casing, and a combustion chamber 12 is formed in the lower part of the main body casing 11. has been done. Further, a fuel tank 14 is arranged on the side of the combustion chamber 12. An auxiliary tank 15 is arranged below the tank 14. In addition, the auxiliary tank 15 An oil pump 16 is attached, and one end of an oil pipe 17 is connected to the oil pump 16. It is connected.

0003 Inside the combustion chamber 12, a carburetor 18 is disposed on the lower side. 8 is connected to the other end of the oil pipe 17, and is further equipped with a gas injection nozzle 19. There is. Further, a mixing pipe 20 is arranged in front of the gas injection nozzle 19, and a mixing pipe 20 is provided in front of the gas injection nozzle 19. A burner 41 is disposed above the tube 20, and this burner 41 has one end of the mixing tube 20 open. connected to the mouth. As shown in FIGS. 12 and 13, the burner 41 has multiple It is formed by several flame holes 42a and is smaller than the diameter of a combustion tube 53, which will be described later. A plurality of burner heads 42 having a diameter are formed.

0004 Combustion tubes 53 are arranged above each burner head 42 to face each other. There is. The upper part of the combustion tube 53 has a flat shape disposed above the main casing 11. are respectively connected to the first heat exchangers 54 , and are further connected to the first heat exchangers 54 . are arranged on the side of the combustion tube 53 and have an exhaust resistance plate 57 inside. It is connected to a heat exchanger 55. Also, the first heat exchanger 5 of the second heat exchanger 55 An exhaust pipe 56 is connected to the end opposite to the end connected to the exhaust pipe 4. 56 is led out to the rear side of the main casing 11. In addition, the combustion tube 53, the first A hot air blower 27 is disposed behind the heat exchanger 54 and the second heat exchanger 55. ing.

[0005]

[Problem that the idea aims to solve]

In the above-mentioned oil hot air heater 50, in order to increase heat exchange efficiency, combustion The hot air blower 2 is installed in all of the cylinder 53, the first heat exchanger 54, and the second heat exchanger 55. It is necessary to blow wind from 7 to perform heat exchange. However, the side of the combustion tube 53 A second heat exchanger 55 is disposed on the side, and further converts the air from the hot air blower 27 into oil hot air. Between each combustion cylinder 53 and each second A space is formed between the heat exchangers 55, and a portion of the air is sent directly between each combustion cylinder 53. , and blows out from the space between each second heat exchanger 55 to the front of the oil hot air heater 50 The wind from the hot air blower 27 does not exchange heat sufficiently with the combustion exhaust gas. If this is not done, the combustion exhaust gas will be exhausted from the exhaust stack 26, and heat will be generated. The problem was that losses would become large.

[0006] In addition, from the perspective of downsizing the oil hot air heater 50, the diameter of the combustion tube 53 and the second heat The diameter of the exchanger 55 and the size of the space in which the combustion cylinder 53 and the second heat exchanger 55 are arranged When the combustion tube 53 and the second heat exchanger 55 have a cylindrical shape, In this case, the contact time with the blast air is short and sufficient heat exchange does not take place. There was a problem in that the heat was exhausted from the exhaust pipe 56, resulting in large heat loss. .

[0007] Furthermore, when the combustion exhaust gas circulates to the second heat exchanger 55, The second heat exchanger 55 is disposed inside the second heat exchanger 55 by the sintered exhaust gas. A metallic sound (distorted sound) is emitted between the exhaust resistance plate 57 and the exhaust resistance plate 57, causing discomfort. There was a problem.

[0008] In addition, the flame burning at the upper part of the burner head 42 is connected to the burner 41 and the combustion tube 53. The heat loss of the combustion heat of the combustion exhaust gas increases as it spreads into the space between the At the same time, some of the flames cause the lower wall of the combustion tube 53 and the upper wall of the combustion chamber 12 to become red hot. If this happens, the constituent materials of the combustion chamber 12 and combustion tube 53 will be damaged, and the lifespan of the parts will be shortened. There was also an issue.

[0009] The present invention was devised in view of the above-mentioned problems, and is designed to reduce heat loss and increase heat generation. Improved exchange efficiency, energy saving, no unpleasant noise, and long product life. It has long been aimed at providing oil hot air heaters.

0010

[Means to solve the problem]

In order to achieve the above object, the oil hot air heater according to the present invention has multiple burners. A combustion tube is provided above each burner head, and a first combustion tube is provided in the combustion tube. and an oil hot air heater to which a second heat exchanger is connected, the second heat exchanger is formed corresponding to the combustion tube, and at least one of the second heat exchangers is formed so as to correspond to the combustion tube. characterized in that one piece is arranged behind the combustion tube and between the combustion tubes. There is.

[0011] Alternatively, there may be multiple burner heads with combustion above each burner head. An oil hot air heater in which a cylinder is arranged and first and second heat exchangers are connected to the combustion cylinder. wherein the first heat exchanger and the second heat exchanger are connected at one location. On the other hand, if each heat exchange part constituting the second heat exchanger is connected in series, It is characterized by being formed into a hollow flat shape.

0012 Furthermore, it is equipped with multiple burner heads, and a combustion tube is installed above each burner head. is installed, and the first and second heat exchangers are connected to the combustion cylinder. , a flame-holding ring is provided on the upper outer periphery of each burner head. It is a sign.

[0013]

[Effect] According to the above configuration, a plurality of burner heads are provided, and each of these burner heads is A stone with a combustion tube disposed above and a first and second heat exchanger connected to the combustion tube. In the oil hot air heater, the second heat exchanger is formed to correspond to the combustion cylinder. and at least one of the second heat exchangers is located behind the combustion tube and the second heat exchanger. Since it is arranged between the combustion cylinders, the wind from the hot air blower is distributed between the combustion cylinders. Or, sufficient heat exchange is not performed by passing between the second heat exchangers. This prevents the warm air from being blown directly in front of the hot air blower, and All the air from the blower is directly directed to the combustion tube, the first heat exchanger and the second heat exchanger. The heat is blown onto the exchanger, reducing heat loss and improving heat exchange efficiency. .

[0014] Alternatively, it is equipped with multiple burner heads, and a combustion tube is placed above each burner head. is installed, and the first and second heat exchangers are connected to the combustion cylinder. wherein the first heat exchanger and the second heat exchanger are connected at one location. On the other hand, when the respective heat exchange parts constituting the second heat exchanger are connected in series, In addition, since it is formed in a hollow flat shape, the wind from the warm air blower and the second heat Contact area and contact time with the exchanger are increased, heat loss is reduced, and heat exchange efficiency is improved. go up In addition, the second heat exchanger does not have an exhaust resistance plate installed, unlike the conventional heat exchanger. When the combustion exhaust gas circulates to the second heat exchanger, the exhaust resistance plate There is no metallic sound (distorted sound) emitted.

[0015] Alternatively, there may be multiple burner heads with combustion above each burner head. An oil hot air heater in which a cylinder is arranged and first and second heat exchangers are connected to the combustion cylinder. In the above, since a flame-holding ring is disposed on the upper outer periphery of each burner head, The flame burning at the top of the burner head enters the space between the burner and the combustion tube. This reduces the loss of combustion heat in the combustion exhaust gas and prevents some flames from spreading. The lower wall of the combustion tube and the upper wall of the combustion chamber are heated to red heat, causing the combustion chamber and the combustion chamber to become red hot. This prevents damage to the component materials and extends the life of the parts.

[0016]

【Example】

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the oil hot air heater according to the present invention will be described below with reference to the drawings. Note that components having the same functions as those of the conventional example are given the same reference numerals.

[0017] 1 and 2 show an oil hot air heater according to the present invention. 11 in the figure is the main unit case. A combustion chamber 12 is formed in the lower part of the main casing 11, and the combustion chamber 12 is A combustion blower 13 is disposed at the rear of the chamber 12. Also, on the side of the combustion chamber 12 A fuel tank 14 is disposed at the bottom, and an auxiliary tank 15 is disposed below the fuel tank 14. It is set up. In addition, an oil feed pump 16 is attached to the auxiliary tank 15, and One end of an oil feed pipe 17 is connected to the oil pump 16 .

[0018] A carburetor 18 is disposed on the lower side inside the combustion chamber 12, and the carburetor 18 is It is connected to the other end of the oil pipe 17, and is further provided with a gas injection nozzle 19. Further, a mixing pipe 20 is arranged in front of the gas injection nozzle 19. A burner 21 is arranged above, and this burner 21 is connected to an opening at one end of the mixing tube 20. It is connected. A plurality of flame holes 22a are formed in the burner 21, and a plurality of flame holes 22a are formed in the burner 21. A plurality of burner heads 22 having a diameter smaller than the diameter of the combustion tube 23 are formed. ing.

[0019] Combustion tubes 23 are arranged above each burner head 22 to face each other. There is. The upper part of the combustion tube 23 has a flat shape disposed above the main casing 11. are connected to the first heat exchangers 24, and further connected to the first heat exchangers 24. is a plurality of combustion tubes 23 located behind the combustion tubes 23 and between the combustion tubes 23. Each of the second heat exchangers 55 is connected in series. of the second heat exchanger 25 An exhaust resistance plate 29 is disposed inside, and the first heat exchanger of the second heat exchanger 25 A heat exchange box 28 is disposed at the end opposite to the end connected to the container 24. There is. An exhaust pipe 26 is connected to the heat exchange box 28, and one end of the exhaust pipe 26 is connected to the heat exchange box 28. is led out to the rear side of the main body casing 11. In addition, the second heat exchanger 25 A hot air blower 27 is arranged at the rear, and the hot air blower 27 has its blades. The upper end is located above the first heat exchanger 24, and the center is located above the second heat exchanger 24. It is arranged above the center of the container 25.

[0020] When the oil hot air heater 10 configured in this way is operated, the oil tank 14 The liquid is supplied from the auxiliary tank 15, the oil pump 16, and the oil pipe 17. The body fuel is vaporized by the vaporizer 18, and is emitted as gaseous fuel from the gas injection nozzle 19. The mixture is injected into the mixing tube 20. The injected gaseous fuel is sent to the mixing pipe 20 after the combustion chamber 12. The air is mixed with the air sent by the combustion blower 13 installed on the side of the burner. 21 and is burned in each burner head 22. Burn with burner head 22 The high-temperature combustion exhaust gas is transferred to a combustion tube 23 disposed above each burner head 22. The heat is collected in the first heat exchanger 24 via the heat exchanger 24 and then enters the second heat exchanger 25. No. After the combustion exhaust gas that entered the heat exchanger 25 of No. 2 is collected in the heat exchange box 28, It is discharged from the exhaust stack 26 to the outside of the machine. Combustion exhaust gas is transferred to the combustion tube 23 and the first heat exchanger 24 and the second heat exchanger 25 before being discharged from the exhaust stack 26 to the outside of the machine. Then, the high-temperature combustion exhaust gas is sent to the hot air blower 2 as shown by the arrow in Figure 3. Heat is exchanged with the wind generated by the operation of 7, and the combustion exhaust gas generates warmth. The trapped air is blown out from the air outlet 11a.

[0021] According to the oil hot air heater 10 configured as described above, the second heat exchanger 25 is connected to the combustion tube 2. Corresponding to 3, it is arranged behind the combustion tube 23 and further between the combustion tubes 23. Because of this, the second heat exchanger is installed on the side of the combustion tube as in the conventional case. Because of this, there is not enough heat exchange and the air is blown directly in front of the hot air blower. All the air from the hot air blower 27 is directly directed to the combustion tube 23, the first heat exchanger 24 and the second heat exchanger 25 to reduce heat loss. This allows for efficient heat exchange.

[0022] Further, another embodiment is shown in FIGS. 4 and 5. 11 in the figure is the main body casing, A combustion chamber 12 is formed in the lower part of the main body casing 11, and a combustion chamber 12 is formed at the rear of the combustion chamber 12. A combustion blower 13 is provided. Additionally, a fuel tank 1 is provided on the side of the combustion chamber 12. 4 is provided, and an auxiliary tank 15 is provided below the fuel tank 14. Ma In addition, an oil feed pump 16 is attached to the auxiliary tank 15, and the oil feed pump 16 also has a One end of the oil pipe 17 is connected.

[0023] A carburetor 18 is disposed on the lower side inside the combustion chamber 12, and the carburetor 18 is It is connected to the other end of the oil pipe 17, and is further provided with a gas injection nozzle 19. Further, a mixing pipe 20 is arranged in front of the gas injection nozzle 19. A burner 31 is arranged above, and this burner 31 is connected to the opening at one end of the mixing tube 20. It is connected. The burner 31 is provided with a protruding compound having a diameter smaller than that of a combustion cylinder 43, which will be described later. Several burner heads 32 are formed. This burner head 32 has a plurality of A flame hole 32a is formed, and the top surface of the burner head 32 is the same as the top surface of the burner 41 body. It is formed at one height.

[0024] Combustion tubes 43 are arranged above each burner head 32 to face each other. There is. The upper part of the combustion tube 43 has a flat shape disposed above the main casing 11. are respectively connected to the first heat exchangers 44 , and are further connected to the first heat exchangers 44 . is connected at one point to a second heat exchanger 45 disposed behind the combustion tube 43. ing. As shown in FIG. 6, the second heat exchanger 45 has a hollow flat shape in series. It is configured by connecting several heat exchange parts 45a, and is connected to the first heat exchanger 44. An exhaust pipe 26 is connected to the end opposite to the end where the exhaust pipe 26 is connected to the main body case. It is led out to the rear side of the thing 11. In addition, a combustion cylinder 43, a first heat exchanger 44 A hot air blower 27 is disposed behind the second heat exchanger 45. For hot air The upper end of the blade of the blower 27 is located above the first heat exchanger 44, and The center of the heat exchanger 45 is arranged above the center of the second heat exchanger 45.

[0025] When the oil hot air heater 10 configured in this way is operated, the oil tank 14 The liquid is supplied from the auxiliary tank 15, the oil pump 16, and the oil pipe 17. The body fuel is vaporized by the vaporizer 18, and is emitted as gaseous fuel from the gas injection nozzle 19. The mixture is injected into the mixing tube 20. The injected gaseous fuel is sent to the mixing pipe 20 after the combustion chamber 12. The air is mixed with the air sent by the combustion blower 13 installed on the side of the burner. 31 and is burned in each burner head 32. Burn with burner head 32 The high-temperature combustion exhaust gas is transferred to a combustion tube 43 disposed above each burner head 32. The heat is collected in the first heat exchanger 44 via the heat exchanger 44 , and then enters the second heat exchanger 45 . No. The combustion exhaust gas that has entered the second heat exchanger 45 sequentially passes through the heat exchange part 45a and enters the exhaust stack. 26 and is ejected from the aircraft. Combustion exhaust gas flows through the combustion tube 43, the first heat exchanger 44 and The high temperature The heated combustion exhaust gas is heated by the hot air blower 27 as shown by the arrow in Figure 7. The air is heated by the combustion exhaust gas, exchanging heat with the wind generated by the Air is blown out from the air outlet 11a.

[0026] According to the oil hot air heater 40 configured as described above, the second heat exchanger 45 is configured. Since the shape of the heat exchange part 45a is hollow and flat, it is different from the conventional second heat exchanger. Compared to this, the surface area is about 10% larger, and the second heat exchanger 45 has a combustion tube. 43, the center of which is lower than the center of the hot air blower 27. Because the location is located at It is physically long and spatially wide, and comes into contact with the wind generated by the hot air blower 27. This allows for efficient heat exchange. In particular, it flows between the combustion tubes 43. The air, which was difficult to warm in the past, can be efficiently heated by the heat exchange section 45a. Become. Moreover, the second heat exchanger 45 is hollow and is not provided with an exhaust resistance plate. Therefore, it does not produce any distorted sound.

[0027] Another embodiment of the burner 31 is shown in FIGS. 8 and 9. 41 in Figures 8 and 9 is a burner The burner 41 has a plurality of burners each having a diameter smaller than that of the combustion tube 43. A head 42 is formed. This burner head 42 has a plurality of flame holes 42. a is formed, and the top surface of the burner head 42 is at the same height as the top surface of the burner 41 main body. is formed. Further, a plate holding plate 46 is provided on the upper surface of the burner 41. The plate holding plate 46 is located at the upper outer periphery of the burner head 42. has a smaller diameter than the diameter of the combustion tube 43 and is further lower than the lower end of the combustion tube 43. A flame-holding ring 47 of the same height is formed.

[0028] In addition, the plate holding plate 46 portion corresponding to the upper outer circumference of the burner head 42 has a shape. The flame holding ring 47 thus formed directs the flame coming out of the flame hole 42a of the burner head 42 upward. It has the function of preventing water from flowing and spreading laterally. Therefore, the flame and combustion exhaust gas are directly overhead. direction, does not spread laterally, and does not spread out in the lower wall of the combustion tube 43 or the top of the combustion chamber 12. Makes the wall red hot, damages the constituent materials of the combustion chamber 12 and the combustion tube 43, and shortens their lifespan. The heat loss of the combustion exhaust gas is prevented and the combustion exhaust gas is effectively combusted. Burning heat can be extracted.

[0029] In this way, by efficiently exchanging heat, the indoor temperature can be effectively raised. This can contribute to energy saving. Also, parts By increasing the lifespan of It becomes possible.

[0030]

[Effect of the idea]

As detailed above, the oil hot air heater according to the present invention has multiple burners. A combustion tube is provided above each burner head, and a combustion tube is provided with a combustion tube. In the oil hot air heater to which the first and second heat exchangers are connected, the second heat exchanger A vessel is formed corresponding to the combustion tube, and a least one of the second heat exchangers is formed so as to correspond to the combustion tube. Both of them are arranged behind the combustion tubes and between the combustion tubes, so that the warm air is The air from the air blower may pass between the combustion tubes or between the second heat exchanger. The hot air blows directly to the front of the hot air blower without sufficient heat exchange. This can prevent all the wind from the hot air blower from directly flowing into the combustion tube. , will come into contact with the first heat exchanger and the second heat exchanger, thereby reducing heat loss. By reducing the heat exchange efficiency, heat exchange efficiency can be improved.

[0031] Alternatively, there may be multiple burner heads with combustion above each burner head. An oil hot air heater in which a cylinder is arranged and first and second heat exchangers are connected to the combustion cylinder. wherein the first heat exchanger and the second heat exchanger are connected at one location. On the other hand, each heat exchange section constituting the second heat exchanger is connected in series. In addition, since the combustion tube and the first heat exchanger are formed in a hollow flat shape, Between the heat exchanger and the second heat exchanger, the combustion exhaust gas comes into contact with the air from the hot air blower. The area and time will increase, which can reduce heat loss and improve heat exchange efficiency. can be improved. Further, the second heat exchanger is formed hollow. Therefore, when the combustion exhaust gas is circulated to the second heat exchanger as in the conventional case, , between the second heat exchanger and the exhaust resistance plate disposed inside the second heat exchanger. No sound (distorted sound) is emitted.

[0032] Alternatively, there may be multiple burner heads with combustion above each burner head. An oil hot air heater in which a cylinder is arranged and first and second heat exchangers are connected to the combustion cylinder. In the above, since a flame-holding ring is disposed on the upper outer periphery of each burner head, The flame burning at the top of the burner head may spread into the space between the burner and the combustion tube. and can reduce the heat loss of combustion exhaust gas. In addition, some of the flames cause the lower wall of the combustion tube and the upper wall of the combustion chamber space to become red hot. This can prevent damage to the constituent materials of the combustion chamber and the combustion tube. This can extend the life of parts.

[0033] In this way, by efficiently exchanging heat, the indoor temperature can be effectively raised. This makes it possible to contribute to energy saving, as well as parts By increasing the lifespan of the equipment, it becomes possible to supply highly reliable equipment. .

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing an embodiment of an oil hot air heater according to the present invention.

FIG. 2 is a front sectional view showing an embodiment of the oil hot air heater.

FIG. 3 is a schematic plan sectional view of the main parts of the oil hot air heater showing the flow of air from the hot air blower.

FIG. 4 is a side sectional view showing another embodiment of the oil hot air heater.

FIG. 5 is a front sectional view showing another embodiment of the oil hot air heater.

FIG. 6 is a front sectional view showing the second heat exchanger.

FIG. 7 is a schematic plan sectional view of the main parts of the oil hot air heater showing the flow of air from the hot air blower.

FIG. 8 is a schematic front cross-sectional view of main parts showing the burner peripheral area in yet another embodiment.

FIG. 9 is a schematic plan view of main parts showing the burner peripheral area.

FIG. 10 is a side sectional view showing a conventional oil hot air heater.

FIG. 11 is a front sectional view showing the oil hot air heater.

FIG. 12 is a schematic front sectional view of the main parts showing the burner peripheral area.

FIG. 13 is a schematic plan view of main parts showing the burner peripheral area.

[Explanation of symbols]

10, 40 Oil hot air heater 22, 32, 42 burner head 23, 43 Combustion tube 24, 44 First heat exchanger 25, 45 Second heat exchanger 45a Heat exchange section 49 Flame holding ring

Claims (3)

[Scope of utility model registration request] 1. An oil hot air heater comprising a plurality of burner heads, a combustion tube disposed above each of the burner heads, and a first heat exchanger and a second heat exchanger connected to the combustion tube. , the second heat exchanger is formed corresponding to the combustion cylinder, and at least one of the second heat exchangers
The oil hot air heater is characterized in that a heater is disposed behind the combustion tube and between the combustion tubes. 2. An oil hot air heater comprising a plurality of burner heads, a combustion tube disposed above each burner head, and a first and a second heat exchanger connected to the combustion tube. , the first heat exchanger and the second heat exchanger are connected at one place, while each heat exchange part constituting the second heat exchanger is connected in series, and a hollow An oil hot air heater characterized by being formed into a flat shape. 3. An oil hot air heater comprising a plurality of burner heads, a combustion tube disposed above each burner head, and a first and second heat exchanger connected to the combustion tube. , An oil hot air heater characterized in that a flame holding ring is disposed on the upper outer periphery of each of the burner heads.