TW202321621A - Burner with composite heat exchanger which has a pipe-bundled heat exchange structure and heat exchange fins at the same time - Google Patents

Abstract

The present invention provides a burner with a composite heat exchanger, which is provided with a plurality of first air intake pipes disposed in a first exhaust passage of an outer pipe, and a first inner pipe disposed in the first exhaust passage. The plurality of first air intake pipes are disposed around the outer side of the first inner pipe. A second exhaust passage is disposed on the inner side of the first inner pipe. A second inner pipe is disposed on the second exhaust passage. A plurality of first fins are annularly disposed on the outer side of the second inner pipe. An air intake passage is disposed on the inner side of the second inner pipe. A fuel pipe is disposed in the air intake passage. The first air intake pipe and the second inner pipe are used to convey gas. After the gas is mixed with the fuel conveyed by the fuel pipe and combusted, the outer pipe and the first inner pipe are used to transport and discharge the waste after combustion.

Description

Burner with compound heat exchanger

The present invention relates to a combustor with a composite heat exchanger, in particular to a heat exchanger with a tube-bundle heat exchange structure and heat exchange fins.

The heat exchangers of conventional self-preheating burners can be divided into fins, tube bundles and plate types. Due to the high cost of the plate type and the consideration of installation space and weight, finned and tube bundle types are commonly used at present. In the heat treatment curve, The power requirements for heating up and maintaining temperature are different, and conventional boilers use a single heat exchanger, which easily leads to poor heat exchange efficiency or high pressure loss.

Although the pressure loss of the conventional finned heat exchanger is better than that of the tube bundle heat exchanger, the heat exchange efficiency of the finned heat exchanger is worse than that of the tube bundle heat exchanger, and due to the power of both heating and maintaining temperature The requirements are different, so if a single heat exchanger is used, it is easy to cause poor heat exchange efficiency or high pressure loss. Only a single heat exchanger cannot maximize the benefits. Therefore, the industry is in urgent need of a finned heat exchanger. The heat exchanger is combined with the tube-bundle heat exchanger and achieves the expected heat exchange efficiency. Burner with combined heat exchanger Burner with combined heat exchanger

One object of the present invention is to provide a combustor with a composite heat exchanger, which is provided with a plurality of first air intake pipes for air intake inside the outer pipe for exhaust, and a plurality of first air intake pipes for air intake The inner side of the first inner pipe is provided with the first inner pipe for exhaust, and then the second inner pipe for air intake is arranged inside the first inner pipe. Inside the second inner pipe, use the first air intake pipe and the second inner pipe to transport gas, and after the gas is mixed with the fuel delivered by the fuel pipe for combustion, use the outer pipe and the first inner pipe to burn Afterwards, the waste is transported and discharged, and the gas transport of these pipes is controlled correspondingly according to the furnace temperature and furnace pressure in the furnace body.

In order to achieve the above-mentioned purposes and effects, the present invention provides a combustor with a composite heat exchanger, which includes: an outer pipe, a plurality of first air intake pipes, a first inner pipe, and a second inner pipe A pipe and a fuel pipe, a first exhaust gas passage is arranged on one inner side of the outer pipe, the first intake pipes are arranged on one inner side of the first exhaust gas passage, and the first inner pipe is arranged on the first exhaust gas passage One of the inner sides, and the first air intake pipes are arranged on the outer side of the first inner pipes, and a second exhaust gas passage is arranged on the inner side of the first inner pipes, and the second inner pipes are arranged on the second inner pipes. On the inner side of the exhaust gas channel, a plurality of first fins are arranged annularly on the outer side of the second inner pipe, an air intake channel is arranged on the inner side of the second inner pipe, and the fuel pipe is arranged on the inner side of the air intake channel; This structure is used to provide a combustor with a composite heat exchanger that integrates a finned heat exchanger and a tube bundle heat exchanger.

In one embodiment of the present invention, it further includes a second air intake pipe and a first air intake chamber, the second air intake pipe is passed through one side of the outer pipe, and one end of the second air intake pipe communicates with The first air intake chamber is arranged annularly outside one of the first inner pipes, and the other ends of the first air intake pipes communicate with the first air intake chamber.

In one embodiment of the present invention, it further includes a first exhaust pipe, the first exhaust pipe passes through the outer pipe, and one end of the first exhaust pipe communicates with the other end of the first exhaust passage.

In one embodiment of the present invention, it further includes a third air intake pipe and a second air intake chamber, the third air intake pipe is passed through one side of the outer pipe, and one end of the third air intake pipe communicates with The second air intake chamber, the second air intake chamber is pierced on one side of the first inner pipe, and is annularly arranged outside one of the fuel pipes, the second air intake chamber communicates with the air intake passage .

In one embodiment of the present invention, it further includes a second exhaust pipe, the second exhaust pipe passes through the outer pipe and the first inner pipe in sequence, and one end of the second exhaust pipe communicates with the second exhaust pipe. The other end of the exhaust channel.

In an embodiment of the present invention, a plurality of second fins are arranged in a ring on an inner side of the second inner tube.

In one embodiment of the present invention, wherein the outer pipe is inserted into a furnace body, and the furnace body communicates with one end of the first exhaust gas passage, each end of the first intake pipes, and one end of the second exhaust gas passage. one end, one end of the intake passage and one end of the fuel pipe.

In one embodiment of the present invention, it further includes a sensing element and a control component, the sensing element senses the furnace temperature and furnace pressure of the furnace body, and the sensing element transmits a sensing signal to the control component.

In order to enable your review committee members to have a further understanding and understanding of the characteristics of the present invention and the achieved effects, the following examples and accompanying descriptions are hereby provided:

In view of the problems of the above-mentioned prior art, the present invention is to arrange a plurality of first air intake pipes on one inner side of an outer pipe, and these first air intake pipes are annularly arranged on one outer side of a first inner pipe. A second inner pipe is arranged on an inner side of an inner pipe, a first fin is arranged on an outer side of the second inner pipe, a fuel pipe is arranged on an inner side of the second inner pipe, and the outer pipe and the plurality of A heat exchanger formed by the first intake pipe, and another heat exchanger formed by the first inner pipe and the second inner pipe, the two heat exchangers are combined into a combustor with a composite heat exchanger.

Please refer to Fig. 1, which is a three-dimensional schematic view of the structure of an embodiment of the present invention. As shown in the figure, in this embodiment, it is a burner 1 with a compound heat exchanger, which includes an outer pipe 10, a plurality of A first air intake pipe 20, a first inner pipe 30, a second inner pipe 40, and a fuel pipe 50; in this embodiment, the outer pipe 10, the first air intake pipes 20, the first air intake An inner pipe 30 , the second inner pipe 40 and the fuel pipe 50 are hollow elements, and the material of the pipes 10 , 20 , 30 , 40 , 50 can be metal, but this embodiment is not limited here.

Referring to Fig. 1 and Fig. 2 again, Fig. 2 is a schematic front view of the structure of an embodiment of the present invention. As shown in the figure, in this embodiment, a first exhaust gas passage 12 is arranged on one of the inner sides of the outer pipe 10 , the first exhaust gas passage 12 is used to transport the exhaust gas after combustion, and the first intake pipes 20 are respectively arranged inside one of the first exhaust gas passages 12, and the first intake pipes 20 are used to transport Gas, the first inner tube 30 is arranged on the inner side of the first exhaust gas passage 12, and the first intake tubes 20 are arranged on an outer side of the first inner tube 30 (as shown in FIG. 2 ) A second exhaust gas passage 32 is arranged on one inner side of the first inner pipe part 30, and the second exhaust gas passage 32 is used to transport exhaust gas after combustion, and the second inner pipe part 40 is arranged on one inner side of the second exhaust gas passage 32, A plurality of first fins 41 are annularly arranged on the outer side of the second inner tube 40 , and these first fins 41 can increase the surface area of the second inner tube 40 to improve heat exchange efficiency. One inner side is provided with an air intake channel 42, the air intake channel 42 is used to transport gas, and the fuel pipe 50 is arranged on one inner side of the air intake channel 42, and the fuel pipe 50 is used to transport fuel; in this embodiment, the The first air intake pipe 20 , the first inner pipe 30 , the second inner pipe 40 and the fuel pipe 50 are disposed inside one of the outer pipes 10 , which can effectively save space.

Continuing from the above, in this embodiment, a plurality of second fins 43 are arranged circularly on the inner side of the second inner tube 40, and the principle of the second fins 43 is the same as that of the first fins 41. Some first fins 41 are used to increase the surface area of gas exchange with the second exhaust gas channel 32, and these second fins 43 are used to increase the surface area of gas exchange with the air intake channel 42 to improve heat exchange efficiency.

Please refer to FIG. 3, which is a schematic diagram of gas flow in the outer pipe structure of the embodiment of the present invention. As shown in the figure, this embodiment further discloses that it further includes a second air intake pipe 60 and a first air intake chamber 62. The second air intake pipe 60 passes through one side of the outer pipe 10, and one end of the second air intake pipe 60 communicates with the first air intake chamber 62, and the first air intake chamber 62 is annularly arranged on the first air intake chamber. On the outside of an inner tube 30, the other ends of the first air intake tubes 20 communicate with the first air intake chamber 62; in this embodiment, the first air intake chamber 62 is wrapped around the The outer side of the first inner pipe 30 is used to mix the gas of the second air inlet pipe 60 so as to evenly distribute it to each of the first air inlet pipes 20, so as to avoid the uneven flow of gas and affect the subsequent furnace The combustion process in the body.

Continuing the above, in this embodiment, a first exhaust pipe 70 is further included, the first exhaust pipe 70 is passed through the outer pipe 10, and one end of the first exhaust pipe 70 communicates with the first exhaust gas passage 12 At the other end, the first exhaust pipe member 70 is used to receive the exhaust gas flowing in the first exhaust gas channel 12 .

Referring to Figure 4, it is a schematic diagram of the gas flow in the inner pipe structure of the embodiment of the present invention. As shown in the figure, this embodiment further discloses that it further includes a third air intake pipe 80 and a second air intake chamber 82. The third air intake pipe 80 is passed through one side of the outer pipe 10, and one end of the third air intake pipe 80 communicates with the second air intake chamber 82, and the second air intake chamber 82 is passed through the first air intake chamber 82. One side of the inner pipe 30 is arranged annularly on one outside of the fuel pipe 50, the second air intake chamber 82 communicates with the air intake passage 42; in this embodiment, the second air intake chamber 82 covers The outer side of the second inner tube 40 communicates with the air intake passage 42, which is used to mix the gas in the third air intake tube 80 to be evenly distributed between each of the second fins 43, Avoid uneven flow of gas, which will affect the combustion process in the subsequent furnace body.

Continuing the above, in this embodiment, a second exhaust pipe 90 is further included. The second exhaust pipe 90 is sequentially passed through the outer pipe 10 and the first inner pipe 30. The second exhaust pipe 90 One end communicates with the other end of the second exhaust gas passage 32 , and the second exhaust pipe 90 is used to receive the exhaust gas flowing in the second exhaust gas passage 32 .

Referring to Fig. 3 and Fig. 4 again, as shown in the figure, in this embodiment, a first gas A1 (such as air) enters the second air intake pipe 60, and the first gas A1 passes through the second air intake After the pipe 60, the first gas A1 enters the first air intake chamber 62, and then the first gas A1 enters one end of the first air intake pipes 20, and is fed by the first air intake pipes 20 At the same time, the fuel pipe 50 delivers a fuel F from one end to the other end of the fuel pipe 50, so that the fuel F and the first gas A1 are mixed together for combustion, and the fuel F and the first gas A1 After combustion, form a first waste gas A2, this first waste gas A2 enters by this first waste gas passage 12 of this outer tube 10, this first waste gas A2 passes through this first waste gas passage 12 simultaneously with these first waste gas passages 12 The outer pipe walls of the air pipes 20 are in contact with each other for heat exchange, heating the first gas A1 in the first air intake pipes 20, and the first exhaust gas A2 enters the first row after passing through the first exhaust gas passage 12. Air pipe 70, and the first exhaust gas A2 is discharged from the first exhaust pipe 70; in this embodiment, the temperature of the first exhaust gas A2 is higher than the temperature of the first gas A1.

Continuing the above, in this embodiment, a second gas A3 (such as air) enters the third air intake pipe 80, and after the second gas A3 passes through the third air intake pipe 80, the second gas A3 enters the third air intake pipe 80. In the two intake chambers 82, the second gas A3 enters one end of the intake passage 42 of the second inner tube 40, and is ejected from the other end of the intake passage 42, while the fuel pipe 50 is delivered from one end. The fuel F is ejected from the other end of the fuel pipe 50, so that the fuel F and the second gas A3 are mixed together for combustion. After the fuel F and the second gas A3 are burned, a second exhaust gas A4 is formed. Exhaust gas A4 enters from the second exhaust gas channel 32 of the first inner tube 30, and the second exhaust gas A4 passes through the second exhaust gas channel 32 while being connected to the first fins 41 of the second inner tube 40 (such as 2) contacts for heat exchange, heating the second gas A3 in the second inner tube 40, and the second inner tube 40 utilizes the second fins 43 to contact the second gas A3 , to increase heat exchange efficiency, the second exhaust gas A4 enters the second exhaust pipe 90 after passing through the second exhaust passage 32, and the second exhaust gas A4 is discharged from the second exhaust pipe 90; in this embodiment , the temperature of the second waste gas A4 is higher than the temperature of the second gas A3.

Please refer to Fig. 5, which is a schematic diagram of the structural arrangement of an embodiment of the present invention. As shown in the figure, this embodiment further discloses that the burner 1 with a composite heat exchanger is further inserted on one side of a furnace body 2 , in this embodiment, the outer pipe 10 is inserted on the outer side of the furnace body 2, and the furnace body 2 communicates with one end of the first exhaust gas channel 12, so that the first exhaust gas A2 in the furnace body 2 can be Exhaust, the furnace body 2 communicates with one end of each of the first air inlet pipes 20, so that the first gas A1 can enter the furnace body 2, and the furnace body 2 communicates with one end of the second exhaust gas passage 32, so that the The second waste gas A4 in the furnace body 2 can be discharged, and the furnace body 2 communicates with one end of the air intake passage 42, so that the second gas A3 can enter the furnace body 2, and the furnace body 2 communicates with one end of the fuel pipe 50 , so that the fuel F can enter the furnace body 2 .

Refer again to Fig. 3, Fig. 4, Fig. 5 and Fig. 6. Fig. 6 is a schematic diagram of the transmission of the sensing element according to an embodiment of the present invention. As shown in the figure, this embodiment further discloses a sensor Sensing element 3 and a control assembly 5, the sensing element 3 is arranged on one inner side of the furnace body 2, the sensing element 3 correspondingly senses the furnace temperature and the furnace pressure of the furnace body 2, and the sensing element transmits a Sensing signal 4 to the control unit 5, the control unit 5 is correspondingly arranged at the air inlets of the second air intake pipe 60 and the third air intake pipe 80, and the control unit 5 is correspondingly arranged at the first exhaust pipe 70 and the air outlet of the second exhaust pipe part 90, the control unit 5 receives the sensing signal 4, and correspondingly controls the second air intake pipe part 60, the first exhaust pipe part 70, and the third air intake pipe part 80 And the gas in and out of the second exhaust pipe 90; in this embodiment, the control component 5 is a plurality of control valves, which adjust the size of the opening to control the flow of gas.

Continuing the above, in this embodiment, the outer pipe 10 and the first intake pipe 30 are the first set of heat exchangers, the first inner pipe 30 and the second inner pipe 40 are the second set of heat exchangers, The first and second sets of heat exchangers jointly use the fuel pipe 50 to input the fuel F to the furnace body 2; Temperature value, furnace pressure value, corresponding exchange uses first, second group heat exchanger or uses first, second group heat exchanger simultaneously; When the furnace temperature of the body 2 is at a low temperature, the furnace pressure of the body of furnace 2 is relatively low. At this moment, the control assembly 5 closes the gas inlet and outlet of the third air inlet pipe fitting 80 and the second exhaust pipe fitting 90, and opens the second air inlet pipe fitting 90. The inlet and outlet of the inlet pipe 60 and the first exhaust pipe 70 correspond to the first group of heat exchangers with high pressure loss and better thermal efficiency to advance the first gas A1; when the furnace temperature and furnace pressure of the furnace body 2 When gradually increasing (in the heating section), in order to improve power and gas flow, the control unit 5 now opens the inlet and outlet of the third air intake pipe 80 and the second exhaust pipe 90, and opens the second air intake. The air inlet and outlet of the pipe fitting 60 and the first exhaust pipe fitting 70 fully open the first and second heat exchangers to increase the flow output of the burner 1 with the compound heat exchanger; when the furnace body 2 enters the temperature holding section When the furnace temperature and furnace pressure need to be kept stable, the furnace body 2 has high furnace temperature and high furnace pressure but low power demand. The control unit 5 opens the third air intake pipe 80 and the second exhaust pipe 90 and close the air inlet and outlet of the second air intake pipe 60 and the first exhaust pipe 70, open the second set of heat exchangers, and use the finned heat exchanger with low pressure loss to reduce the compound heat. The power consumption of related equipment used by the burner 1 of the exchanger, such as a fan for gas delivery.

In summary, the present invention provides a combustor with a composite heat exchanger, which is to arrange a plurality of first air intake pipes for air intake on the inner side of the outer pipe for exhaust, and place a plurality of first air intake pipes on the inside of the first air intake pipes. The inner side of the pipe is provided with the first inner pipe for exhaust, and then the second inner pipe for air intake is arranged inside the first inner pipe, and the outer side of the second inner pipe is provided with fins to improve the efficiency of heat exchange. Arranged inside the second inner pipe, use the first air intake pipe and the second inner pipe to transport gas, and after the gas is mixed with the fuel delivered by the fuel pipe, use the outer pipe and the first inner pipe to The waste after combustion is transported and discharged. This structure provides a burner with a composite heat exchanger, and uses different heat exchangers according to the situation in the furnace body. It solves the single heat exchanger of the conventional technology, which is easy to cause heat exchange efficiency. Problems with poor or high pressure loss situations.

Therefore, the present invention is novel, progressive and can be used in the industry. It should meet the patent application requirements of my country's patent law. I file an invention patent application in accordance with the law. I pray that the bureau will grant the patent as soon as possible. I sincerely pray.

However, the above is only an embodiment of the present invention, and is not used to limit the scope of the present invention. Therefore, all equivalent changes and modifications made in accordance with the shape, structure, characteristics and spirit described in the scope of the patent application of the present invention, All should be included in the patent scope of the present invention.

1: Burner with composite heat exchanger 2: furnace body 3: Sensing element 4: Sensing signal 5: Control components 10: Outer pipe fittings 12: The first exhaust gas channel 20: The first air intake pipe 30: the first inner pipe 32: The second exhaust gas channel 40: Second inner pipe fitting 41: First fin 42: Intake channel 43: Second fin 50: Fuel fittings 60: The second air intake pipe 62: The first air intake chamber 70: The first exhaust pipe fitting 80: The third air intake pipe 82: The second air intake chamber 90: Second exhaust pipe fitting A1: First gas A2: First exhaust gas A3: Second gas A4: Second exhaust gas F: Fuel

Figure 1: It is a three-dimensional schematic view of the structure of an embodiment of the present invention; Figure 2: It is a schematic front view of the structure of an embodiment of the present invention; Figure 3: It is a schematic diagram of gas flow in the outer tube structure of the embodiment of the present invention; Figure 4: It is a schematic diagram of gas flow in the inner tube structure of the embodiment of the present invention; Fig. 5: It is a schematic diagram of the structural arrangement of an embodiment of the present invention; and Figure 6: It is a schematic diagram of the transmission of the sensing element according to the embodiment of the present invention.

1: Burner with composite heat exchanger

10: Outer pipe fittings

12: The first exhaust gas channel

20: The first air intake pipe

30: the first inner pipe

32: The second exhaust gas channel

40: Second inner pipe fitting

41: First fin

42: Intake channel

50: Fuel fittings

70: The first exhaust pipe fitting

90: Second exhaust pipe fitting

Claims (8)

A combustor with a composite heat exchanger, comprising: an outer pipe, a first waste gas channel is arranged on an inner side thereof; a plurality of first intake pipes arranged inside one of the first exhaust gas passages; A first inner pipe, which is arranged on the inner side of the first exhaust gas passage, and the first intake pipes are arranged on the outer side of the first inner pipe, and a first inner pipe is arranged on the inner side of the first inner pipe. Two exhaust gas channels; A second inner pipe part, which is arranged on the inner side of the second exhaust gas passage, a plurality of first fins are annularly arranged on the outer side of the second inner pipe part, and an air intake passage is arranged on the inner side of the second inner pipe part; and A fuel pipe is arranged inside one of the intake passages. The combustor with a compound heat exchanger as described in claim 1 further comprises a second air intake pipe and a first air intake chamber, the second air intake pipe passes through one side of the outer pipe, One end of the second air intake pipe communicates with the first air intake chamber, the first air intake chamber is annularly arranged outside one of the first inner pipes, and the other ends of the first air intake pipes communicate with each other The first intake chamber. The combustor with composite heat exchanger as described in Claim 1 further includes a first exhaust pipe, the first exhaust pipe passes through the outer pipe, and one end of the first exhaust pipe communicates with the first exhaust pipe The other end of an exhaust passage. The combustor with a compound heat exchanger as described in claim 1 further includes a third air intake pipe and a second air intake chamber, the third air intake pipe passes through one side of the outer pipe, One end of the third air intake pipe communicates with the second air intake chamber, the second air intake chamber passes through one side of the first inner pipe, and is annularly arranged outside one of the fuel pipes, the second air intake chamber The air intake chamber communicates with the air intake channel. The combustor with composite heat exchanger as described in Claim 1 further includes a second exhaust pipe, which is sequentially passed through the outer pipe and the first inner pipe, the second One end of the exhaust pipe is connected to the other end of the second exhaust gas channel. The combustor with a composite heat exchanger as described in claim 1, wherein a plurality of second fins are annularly arranged on the inner side of the second inner tube. The burner with composite heat exchanger as described in claim 1, wherein the outer pipe is inserted into a furnace body, the furnace body communicates with one end of the first exhaust gas passage, and the first intake pipes are respectively One end, one end of the second exhaust gas passage, one end of the intake passage and one end of the fuel pipe. The burner with a composite heat exchanger as described in claim 7 further includes a sensing element and a control assembly, the sensing element senses the furnace temperature and furnace pressure of the furnace body, and the sensing element transmits a A sensing signal is sent to the control component.

Images