JP5306962B2 - Heating system using boiler heat exchanger and waste heat of boiler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchange device for a boiler, and a warming system utilizing the same. <P>SOLUTION: This heat exchange device for the boiler includes a base attachable to an outer side of an exhaust port of the boiler, and a medium path formed on the base, and a medium in the medium path is warmed by exhaust heat discharged from the exhaust port. A heat transfer body may be disposed for the medium path. The exhaust port may be formed in a state that the base is composed of a cylindrical case. In this heat utilization warming system of the boiler, the base is attached to the outer side of the exhaust port of the boiler, a warming pipe arranged inside and outside of an agricultural house is connected to the medium path, and a circulating device is disposed to deliver the medium heated by the exhaust heat of the boiler to the warming pipe, and return the same to the medium path. A delivery path for delivering the heat discharged from the exhaust port of the boiler and the heat from the heat transfer body heated by the heat to a gas path at an outer periphery of a combustion chamber of the boiler, and an air distribution port for distributing the air for delivering the heat to the delivery path, may be further disposed. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a heat exchanger for a boiler that can be connected to a boiler and a heating system that uses exhaust heat from a boiler that includes the heat exchanger.

  A boiler is used for heating in the agricultural house. There are vertical and horizontal types of boilers. The boiler A of FIG. 7 is a horizontal type and includes a combustion device (burner J), a combustion chamber B, a discharge chamber C, and a chimney D. The combustion chamber B is a combustion chamber of the burner J, and there is a heating space G in which the air sucked from the intake port F is heated on the outer periphery, and a discharge duct H that discharges the air heated in the heating space G to the outside. Is provided.

  Although the exhaust heat discharged from the chimney D is very high, it is discharged to the outside as it is and discarded in the air. Exhausting high-temperature exhaust heat to the outside is not only a waste of energy, but also contributes to global warming.

  The present invention provides a heat exchanger for a boiler that can solve the above-mentioned problems and that can effectively use the exhaust heat of the boiler, and a heating system that uses the exhaust heat of the boiler equipped with the heat exchange device. The boiler heat exchanging device of the present invention is a boiler heat exchanging device that can be attached to a boiler having a combustion chamber B and a cylindrical discharge chamber C provided in series in communication with the outside of the outlet on the same axis. The boiler heat exchange device includes a cylindrical case 2 and a pipe-shaped medium passage 3 that can be attached to the outlet side of the discharge chamber C, and the case 2 is approximately the same as the inner diameter of the discharge chamber C. One end surface (opening side end surface 20a) in the axial direction is opened, the other end surface (closing side end surface 20b) is closed by the lid 5, and the medium passage 3 has an introduction end 3a and a discharge end. 3b protrudes outside the case 2, and an intermediate portion 3c between the introduction end portion 3a and the discharge end portion 3b is accommodated in the case 2 and attached to the case 2, and the case 2 is placed outside the discharge chamber C. The opening side end face 20a is attached so as to communicate with the discharge chamber C, When the medium is caused to flow from the introduction end 3a protruding outside the case 2 to the discharge end 3b, the medium flowing in the medium passage 3 is heated by the exhaust heat discharged from the discharge chamber C into the case 2. It is designed to be heated.

  The boiler heat exchanging device of the present invention is a boiler heat exchanging device that can be attached to a boiler having a combustion chamber B and a cylindrical discharge chamber C provided in series in communication with the outside of the outlet on the same axis. The boiler heat exchanging apparatus includes a cylindrical case 2 that can be attached to the outlet side of the discharge chamber C and a pipe-shaped medium passage 3, and the case 2 is substantially the same as the inner diameter of the discharge chamber C. The medium passage 3 has an introduction end 3a and a discharge end 3b projecting outside the case 2, and the introduction end 3a and the discharge end. An intermediate portion 3c between the portions 3b is accommodated in the case 2 and attached to the case 2. The exhaust chamber C is removed from the combustion chamber B and the case 2 is replaced with the exhaust chamber C in one end surface in the axial direction. (Open side end face 20a) should be connected to the combustion chamber B. In addition, the removed discharge chamber C is attached to the outside of the other end surface (blocking side end surface 20b) in the axial direction of the case 2 so as to communicate with the case 2, and the discharge chamber C and the case 2 are combusted in the boiler A. If the introduction end 3a and the discharge end 3b are projected out of the case 2 in communication with the chamber B, and the medium flows from the introduction end 3a to the discharge end 3b, the medium flowing in the medium passage 3 is combusted. Heating is performed by exhaust heat exhausted from the chamber B into the case 2, and the exhaust heat in the case 2 passes through the exhaust chamber C and is exhausted to the outside.

  The boiler heat exchanging device of the present invention is a boiler heat exchanging device that can be attached to a boiler having a combustion chamber B and a cylindrical discharge chamber C provided in series in communication with the outside of the outlet on the same axis. The boiler heat exchanging apparatus includes a cylindrical case 2 that can be attached to the outlet side of the discharge chamber C and a pipe-shaped medium passage 3, and the case 2 is substantially the same as the inner diameter of the discharge chamber C. One end face (opening side end face 20a) in the axial direction is opened, the other end face (closing side end face 20b) is closed by the lid 5, and the medium passage 3 has the introduction end 3a and the discharge end. The portion 3b protrudes to the outside of the case 2, and a part of the intermediate portion 3c (accommodating portion 3d) between the introduction end portion 3a and the discharge end portion 3b is accommodated in the case 2, and the other portion of the intermediate portion 3c. The part (protruding part 3e) protrudes outside the case 2 and is attached to the case 2, The case 2 is attached to the outside of the discharge chamber C so that the opening-side end surface 20a communicates with the discharge chamber C, and the protruding portion 3e of the medium passage 3 is accommodated in the discharge chamber C, and the introduction end 3a and the discharge end are discharged. When the end 3b protrudes outside the case 2 and the medium flows from the introduction end 3a to the discharge end 3b, the medium flowing in the medium passage 3 is exhausted from the discharge chamber C and from the discharge chamber C to the case 2 It is heated by the exhaust heat exhausted.

  The boiler heat exchanging device of the present invention is a boiler heat exchanging device that can be attached to a boiler having a combustion chamber B and a cylindrical discharge chamber C provided in series in communication with the outside of the outlet on the same axis. The boiler heat exchanging device includes a cylindrical case 2 that can be attached to the outlet side of the discharge chamber C, and a heat transfer body 8 that can be accommodated in the discharge chamber C. The case 2 has a discharge chamber. The inner diameter is substantially the same as the inner diameter of C, and there is a flange 4 on one end face in the axial direction, the other end face is closed by the outer closing lid 5, and the heat transfer body 8 is at one end side in the axial direction (outer end). 8a) protrudes to the outside of the case 2, the other end side (inner end 8b) is accommodated in the case 2 and attached to the case 2, and the intake port 13 and the outlet 9 are connected to the case 2 in the case 2. The case 2 is attached to the outside of the discharge chamber C, and the heat transfer body 8 is When the outer end 8a protruding outside the casing 2 is accommodated in the discharge chamber C, the heat transfer body 8 is heated by the exhaust heat in the discharge chamber C, and the inside of the case 2 is heated. The gas sent from the inlet 13 into the case 2 and delivered from the outlet 9 is heated by exhaust heat in the case 2.

The heating system using the exhaust heat of the boiler of the present invention includes a boiler A for heating the inside of an agricultural house, a heat exchange device 1 attached to the boiler A, and a circulation pipe connected to the heat exchange device 1 11. The heat exchange device 1 is a boiler heat exchange device according to any one of claims 1 to 3 , wherein the heat exchange device 1 is a discharge chamber C or a combustion chamber B of a boiler A. The circulation pipe 11 is piped inside or outside the agricultural house, one end of which is the introduction end 3a of the medium passage 3 of the heat exchange device 1, and the other end is the discharge end 3b. The medium sent to the medium passage 3 is heated by the exhaust heat of the boiler A, passes through the circulation pipe 11 and returns to the medium passage 3. The heating system using the exhaust heat of the boiler of the present invention includes a boiler A that heats the inside of an agricultural house, a heat exchange device 1 that can be attached to the boiler A, and a gas that is heated by the heat exchange device 1 The heat exchange device 1 is a boiler heat exchange device according to claim 4 , and the heat exchange device 1 has a cylindrical case 2 in the discharge chamber C of the boiler A. The one end side (outer end 8a) of the heat transfer body 8 attached to the case 2 is accommodated in the discharge chamber C, the blower 12 is connected to the intake port 13 of the case 2, and the case 2 One end of the delivery path 10 is connected to the delivery port 9, and the other end of the delivery path 10 is connected to an intake port F communicating with the heating space G on the outer periphery of the combustion chamber of the boiler A, from the intake port 13 of the case 2. The gas sent into the case 2 is exhausted in the discharge chamber C of the boiler A. Is heated in the case 2 heated by the heat transfer body 8 heated by the above, and sent from the outlet 9 of the case 2 to the heating space G of the boiler A through the intake port F of the boiler A. It is reheated in the heating space G and discharged from the discharge duct H of the boiler A into the agricultural house.

The boiler heat exchange device of the present invention has the following effects.
(1) The exhaust heat of the boiler that has been discharged to the outside can be effectively used, and the heat temperature discharged from the boiler to the outside of the agricultural house is lowered, which helps to counter global warming.
(2) Since it is attached to the discharge chamber or the combustion chamber on the terminal end side on the extension line of the combustion chamber, the heat in the combustion chamber of the boiler can be recovered on the same axis, and the heat recovery efficiency is good.
(3) Since it can be attached to and detached from the discharge chamber or combustion chamber of an existing boiler, the existing boiler can be used as it is, and the installation work is also easy.

The heating system using the exhaust heat of the boiler of the present invention has the following effects.
(1) Since the inside of the agricultural house can be heated not only by the boiler body but also by the heat of the boiler recovered by the boiler heat exchanger, the heat of the boiler can be used effectively.
(2) Since a heat exchanging device with high heat recovery efficiency from the boiler is used, the heating efficiency in the agricultural house is also improved.
(3) Since this is a system that circulates (heated) a medium that has been heat-exchanged in a portion that has not been subjected to heat exchange in the past, the exhaust heat can be used effectively and there is no waste.

Explanatory drawing which shows an example of the heating system using the waste heat of the boiler in which the whole medium channel | path is piped in a case, and the boiler which attached it. Explanatory drawing which shows an example at the time of attaching the heat exchange apparatus for boilers of this invention to the combustion chamber of a boiler. Explanatory drawing of the heat exchanger apparatus for boilers when a part of medium passage is made to project outside the case. Explanatory drawing of the heat exchange apparatus for boilers when a medium channel | path is attached to a plate-shaped base | substrate. (A) is explanatory drawing which shows an example of the heating system using the waste heat of the boiler in which the heat exchanger for boilers in which a part of heat exchanger was protruded and provided, and the boiler which attached it, (b) ) Is a cross-sectional explanatory view of the boiler combustion chamber showing the flow of air sent from the delivery path. Explanatory drawing which shows an example at the time of attaching the heat exchanger apparatus for boilers of this invention to a vertical boiler. Explanatory drawing which shows an example of the conventional boiler.

(Embodiment 1 of heat exchanger for boiler)
1st Embodiment of the heat exchanger apparatus for boilers of this invention is described based on FIG. The illustrated heat exchanging device 1 is attached to the terminal end side on the extension line of the combustion chamber B of the boiler A, and performs heat exchange using heat in both or one of the combustion chamber B and the discharge chamber C.

  As shown in FIG. 1, the heat exchanging device 1 has a medium passage (heat exchanging pipe 3) in a cylindrical case 2 having an inner diameter substantially equal to the inner diameter of the discharge chamber C of the combustion chamber B of the boiler A. Contained. One end of the case 2 in the axial direction (opening side end face 20a) has a ring-shaped connecting rod 4, which can be attached to a flange E of the discharge chamber C with a connecting tool such as a bolt or a nut. With this attachment, the internal space 2a of the case 2 communicates with the discharge chamber C of the boiler A, and the heat in the combustion chamber B passes through the discharge chamber C and is sent into the case 2. The other end of the case 2 in the axial direction (closing side end surface 20 b) is closed by a disc-shaped lid 5, and the introduction end 3 a and the discharge end 3 b of the heat exchange pipe 3 protrude outside the lid 5. . The exhaust chamber C is provided with an existing chimney D, and the case 2 is provided with an exhaust cylinder 6. The material of the case 2, the heat exchange pipe 3, the connecting rod 4, the lid 5, and the exhaust pipe 6 is preferably one having the same heat resistance and strength as the combustion chamber B of the boiler A, such as metal or ceramic. It can be made of material. In the present embodiment, the case 2 has a cylindrical shape as an example. However, the case 2 may have a shape other than a cylindrical shape such as a rectangular tube shape. In this case, the shape of the lid 5 is preferably a plate material having a shape suitable for the shape of the case 2. Further, the introduction end portion 3 a and the discharge end portion 3 b of the heat exchange pipe 3 can be projected outside the case 2 instead of the lid 5. In order to facilitate maintenance, the case 2 is provided with a drain 14 for discharging the drainage accumulated in the case 2 to the outside, and the lid 5 is provided with a cleaning window 15 that can be used when cleaning the inside of the case 2. Can do.

  The exhaust tube 6 is for exhausting the heat exhausted from the heat exchange device 1 to the outside of the agricultural house, one end of which is communicated with the case 2 of the heat exchange device 1, and the other end of the heat exchanger 1 outside the agricultural house. The exhaust heat in the case 2 is exhausted to the outside. Since carbon dioxide contained in the exhaust helps to grow the plants to be cultivated, depending on the fuel used, one end of the exhaust pipe 6 is placed inside the agricultural house within a range that does not adversely affect the human body and plants (cultivated products). The exhaust heat from the heat exchange device 1 and useful gas can be discharged into the agricultural house.

  The heat exchanging pipe 3 is for exchanging heat using the heat discharged from the boiler A. As shown in FIG. 1, a meandering round pipe is provided in the case 2 and is attached to the tip of the pipe. The introduction end portion 3a and the discharge end portion 3b provided are projected outside the lid 5 that closes the case 2, and can be connected to the medium supply pipe 11a and the heating pipe 11b of the circulation pipe 11. The heat exchange pipe 3 may have other shapes.

(Embodiment 2 of boiler heat exchange device)
2nd Embodiment of the heat exchanger apparatus for boilers of this invention is described based on FIG. The basic structure of the boiler heat exchange device 1 of this embodiment is the same as that of the first embodiment. The difference is the mounting position of the boiler heat exchange device 1. In this embodiment, the discharge chamber C connected and fixed to the combustion chamber B of the boiler A is once removed, the boiler heat exchange device 1 of the present invention is attached to that portion, and further to the outside of the boiler heat exchange device 1. The removed discharge chamber C is attached. A lid 5 is attached to the outside of the discharge chamber C, and the opening of the case 2 is closed. A through-hole is formed in the lid 5 so that the introduction end 3 a and the discharge end 3 b of the heat exchange pipe 3 can be penetrated to the outside of the case 2. Instead of attaching the discharge chamber C removed from the boiler A, the lid 5 can be directly attached to the boiler heat exchange device 1. When the heat exchanging pipe 3 is installed in a portion (case 2) corresponding to the inside of the discharge chamber C as in the present embodiment, the exhaust resistance of the boiler A may change. It is necessary to design the structure.

(Embodiment 3 of heat exchanger for boiler)
A third embodiment of the heat exchanger for boiler of the present invention will be described with reference to FIG. The basic structure of the boiler heat exchange device 1 of this embodiment is the same as that of the first embodiment. The difference is that the length of the case 2 is shorter than that of the first embodiment, and about half of the intermediate portion 3c (accommodating portion 3d) of the heat exchanging pipe 3 is in the case 2 and other portions (protruding portions). 3e) is a pipe that protrudes out of the case 2. In this case, when the connecting rod 4 of the case 2 is attached to the rod E of the discharge chamber C of the boiler A, the protruding portion of the heat exchange pipe 3 is piped into the discharge chamber C of the boiler A. Thereby, size reduction of the heat exchange apparatus 1 can be achieved. The heat exchanging pipe 3 may be wound in a shape other than this, for example, in a coil shape, as long as its total extension can be lengthened. In the case of a coil shape, a small diameter coil can be piped inside a large diameter coil, and multiple pipes such as double or triple can be provided. Also in this case, it is preferable to design the structure in consideration of the exhaust resistance as in the second embodiment.

(Embodiment 4 of heat exchanger for boiler)
A fourth embodiment of the boiler heat exchange device of the present invention will be described with reference to FIG. The heat exchanging device 1 in FIG. 4 is attached to the discharge chamber C on the extension line end side of the boiler A, and performs heat exchange using the heat in the combustion chamber B and the discharge chamber C. The basic structure is the same as that of the first embodiment, and the difference is that the heat exchanging pipe 3 is attached to the flat substrate 7 without being piped in the case 2. The substrate 7 is provided with a meandering heat exchange pipe 3, and its introduction end 3 a and discharge end 3 b are attached to the outer surface of the substrate 7, and the substrate 7 is connected to the discharge chamber C of the boiler A. When attached to the firewood E, the intermediate portion 3c of the heat exchange pipe 3 is accommodated in the discharge chamber C of the boiler A, and the medium flowing through the heat exchange pipe 3 in the discharge chamber C is added by the heat of the combustion chamber B. It is supposed to be warm. Also in this embodiment, it is preferable to design the structure in consideration of the exhaust resistance, as in the second and third embodiments.

(Embodiment 5 of boiler heat exchange device)
A fifth embodiment of the heat exchanger for boiler of the present invention will be described with reference to FIGS. 5 (a) and 5 (b). The heat exchange device 1 in FIG. 5A is provided with a plurality of plate-like heat transfer bodies (heat radiators: heat sinks) 8 in the case 2 instead of the heat exchange pipe 3 of the first embodiment. A part of the body 8 (one axial end side 8 a) is projected outside the case 2. In the heat exchanger 1, when the case 2 is attached to the flange E of the discharge chamber C on the end line on the extension line of the combustion chamber B of the boiler A, the protruding portion (one axial side 8a) of the heat transfer body 8 is the boiler A. The heat in the discharge chamber C is transferred into the case 2 through the other axial end side 8b of the heat transfer body 8. In the case of this embodiment as well, it is preferable to design the structure in consideration of the exhaust resistance as in the second to fourth embodiments.

  The plurality of heat transfer bodies 8 shown in FIG. 5A are arranged at regular intervals and arranged in parallel or substantially parallel to each other. However, the thickness, length, and number of the heat transfer bodies 8 are arranged. The arrangement interval, arrangement position, orientation, etc. can be arbitrarily selected according to the size (size) of the heat exchange device 1. The heat transfer body 8 may have other shapes such as a round bar shape, a square bar shape, and a pipe shape as long as heat conduction is possible.

  A delivery port 9 is opened on the outer peripheral surface of the case 2 in FIG. 5A, and the heat released into the case 2 and the heat conducted into the case 2 by the heat transfer body 8 are released to the outside. It is like that. A delivery path 10 for guiding the exhaust heat in the case 2 in a desired direction can be attached to the delivery port 9. The delivery port 9 can be provided other than the outer peripheral surface of the case 2, for example, can be provided on the side surface of the case 2. An intake port 13 is provided on the opposite side of the case 2 from the delivery port 9. When air is sent from the blower 12 such as a fan to the intake port 13, the heat in the case 2 is sent out to the delivery port 9. The blower 12 can be provided not in the delivery path 10 but in the heat exchange device 1. In this embodiment, the case 2 has a cylindrical shape, but the case 2 may have a rectangular tube shape.

  Although the said embodiment is a case where the boiler A is a horizontal type, the vertical type as shown in FIG. 6 may be sufficient as the boiler A. FIG. In FIG. 6, I is a fluid path and P is a pump. The heat exchange device 1 of the present invention can be connected to various boilers such as a vertical boiler. Also in this case, the heat exchange device 1 can be connected to the upper side of the combustion chamber B or the discharge chamber C of the boiler A (the terminal end side on the extension line of the combustion chamber of the boiler).

(Embodiment 1 of heating system using exhaust heat of boiler of the present invention)
Although the heat exchange apparatus used for the heating system using the exhaust heat of the boiler of the present invention may be any of those shown in FIGS. 1 to 6, in this embodiment, the heat exchange apparatus of FIG. 1 is used. Will be described as an example. In this heating system, the heat exchange device 1 of the present invention is connected to the discharge chamber C of the horizontal boiler A. After removing the cover of the discharge chamber C of the boiler A, the eaves E and the case 2 of the discharge chamber C are removed. The connecting rod 4 is abutted and both are connected and fixed with connecting tools such as bolts and nuts, so that the inside of the discharge chamber C and the inside of the case 2 are communicated.

  One end (medium supply pipe 11a) of the circulation pipe 11 is connected to the introduction end 3a of the heat exchange pipe 3 of the heat exchange device 1, and the other end (heating pipe 11b) of the circulation pipe 11 is connected to the introduction end 3a. The blower 12 is connected to one of the medium supply pipe 11a and the heating pipe 11b, and a medium (for example, water, hot water, air, etc.) is supplied to the heat exchange pipe 3, and the heat exchange pipe 3 The medium (for example, hot water, hot air) can be circulated. The heating pipe 11b is a flow path for supplying warm water or hot air heated inside or outside the agricultural house. When the medium is hot water, the pipe 11b may be piped near the soil in the agricultural house. In addition, piping buried in the soil can be provided, and when the medium is hot air, piping can be provided in the space in the house. It can also be used for heating cultivation beds and cultivation benches. The heating pipe 11b can be led out of the agricultural house and used for other purposes.

(Embodiment 2 of the heating system using the exhaust heat of the boiler of the present invention)
An example of an embodiment of a heating system using the exhaust heat of the boiler of the present invention will be described with reference to FIG. In this heating system, a heat exchanger 1 is connected to a discharge chamber C of a horizontal boiler A, and the connection rod 4 of the discharge chamber C and the connection rod 4 of the case 2 are brought into contact with each other to connect them with bolts and nuts. It is connected and fixed with tools.

  The outlet 9 of the heat exchanger 1 is connected to a delivery path 10 for sending out the exhaust heat in the case 2 to the outside, and the other end of the delivery path 10 is connected to the intake port F of the boiler A. Has been. By connecting and connecting in this way, the exhaust heat that has been conventionally released to the outside from the discharge chamber C of the boiler A is sent again into the heating space G on the outer periphery of the combustion chamber B in the boiler A (FIG. 5B). It can be used for heating in an agricultural house. The delivery path 10 can be drawn into the agricultural house without being introduced into the intake port F of the boiler A so that the inside of the agricultural house can be heated (the phantom line in FIG. 5A).

  If the heat exchange device of the present invention is attached, it is possible to add a function that does not exist in the original device, such as generating hot water with a boiler that generates hot air, and generating hot air with a boiler that generates hot water.

DESCRIPTION OF SYMBOLS 1 Heat exchange apparatus 2 Case 2a Internal space 3 Medium passage 3a Introduction end 3b Discharge end 3c Intermediate part 3d Storage part 3e Protrusion part 4 Connection rod 5 Lid 6 Exhaust cylinder 7 Substrate 8 Heat transfer body 8a Axial direction of heat transfer body One end (outer end)
8b Axial other end side (inner end) of heat transfer body
DESCRIPTION OF SYMBOLS 9 Outlet 10 Outlet 11 Circulation pipe 11a Medium supply pipe 11b Heating pipe 12 Blower 13 Inlet 14 Drain 15 Cleaning window 20a Open side end surface 20b Closed side end surface A Boiler B Combustion chamber C Discharge chamber D Chimney E 鍔 F Air intake G Heating space H Discharge duct I Fluid path J Burner P Pump

Claims (6)

A boiler heat exchange device that can be attached to a boiler having a combustion chamber (B) and a cylindrical discharge chamber (C) provided in series in communication with the outside of the outlet on the same axis as the combustion chamber,
The boiler heat exchange device includes a cylindrical case (2) that can be attached to the outlet side of the discharge chamber (C) and a pipe-shaped medium passage (3).
The case (2) has an inner diameter that is substantially the same as the inner diameter of the discharge chamber (C), and one end surface in the axial direction (opening side end surface: 20a) is opened, and the other end surface (closing side end surface: 20b) is formed. Closed with a lid (5),
The medium passage (3) has an introduction end (3a) and a discharge end (3b) projecting outside the case (2), and is intermediate between the introduction end (3a) and the discharge end (3b). The part (3c) is accommodated in the case (2) and attached to the case (2);
The introduction end that attaches the case (2) to the outside of the discharge chamber (C) so that the opening-side end surface (20a) communicates with the discharge chamber (C), and protrudes outside the case (2). When the medium flows from (3a) to the discharge end (3b), the medium flowing in the medium passage (3) is heated by the exhaust heat discharged from the discharge chamber (C) into the case (2).
A boiler heat exchanger. A boiler heat exchange device that can be attached to a boiler having a combustion chamber (B) and a cylindrical discharge chamber (C) provided in series in communication with the outside of the outlet on the same axis as the combustion chamber,
The boiler heat exchange device includes a cylindrical case (2) that can be attached to the outlet side of the discharge chamber (C), and a pipe-shaped medium passage (3).
The case (2) has an inner diameter substantially the same as the inner diameter of the discharge chamber (C), and both axial end faces (20a, 20b) are open,
The medium passage (3) has an introduction end (3a) and a discharge end (3b) projecting outside the case (2), and is intermediate between the introduction end (3a) and the discharge end (3b). The part (3c) is accommodated in the case (2) and attached to the case (2);
The discharge chamber (C) is removed from the combustion chamber (B), and instead of the discharge chamber (C), the case (2) has one end face in the axial direction (open end face: 20a) communicating with the combustion chamber (B). To be installed,
The removed discharge chamber (C) is attached to the outer side of the other end surface (closed end surface: 20b) in the axial direction of the case (2) so as to communicate with the case (2). (2) is communicated with the combustion chamber (B) of the boiler (A), the introduction end (3a) and the discharge end (3b) are projected out of the case (2), and the introduction end (3a) When the medium flows from the exhaust to the discharge end (3b), the medium flowing in the medium passage (3) is heated by the exhaust heat discharged from the combustion chamber (B) into the case (2), So that the exhaust heat is discharged to the outside through the discharge chamber (C).
A boiler heat exchanger. A boiler heat exchange device that can be attached to a boiler having a combustion chamber (B) and a cylindrical discharge chamber (C) provided in series in communication with the outside of the outlet on the same axis as the combustion chamber,
The boiler heat exchange device includes a cylindrical case (2) that can be attached to the outlet side of the discharge chamber (C), and a pipe-shaped medium passage (3).
The case (2) has an inner diameter that is substantially the same as the inner diameter of the discharge chamber (C), and one end surface in the axial direction (opening side end surface: 20a) is opened, and the other end surface (closing side end surface: 20b) is formed. Closed with a lid (5),
The medium passage (3) has an introduction end (3a) and a discharge end (3b) protruding outside the case (2), and an intermediate portion between the introduction end (3a) and the discharge end (3b). A part of (3c) (accommodating part: 3d) is accommodated in the case (2), and the other part (protruding part: 3e) of the intermediate part (3c) protrudes outside the case (2). Attached to (2),
The case (2) is attached to the outside of the discharge chamber (C) and the opening side end face (20a) is in communication with the discharge chamber (C), and the protruding portion (3e) of the medium passage (3) is connected to the discharge chamber. (C) When the medium is passed from the introduction end (3a) to the discharge end (3b) by projecting the introduction end (3a) and the discharge end (3b) out of the case (2). The medium flowing in the medium passage (3) is heated by the exhaust heat in the discharge chamber (C) and the exhaust heat discharged from the discharge chamber (C) into the case (2).
A boiler heat exchanger. A boiler heat exchange device that can be attached to a boiler having a combustion chamber (B) and a cylindrical discharge chamber (C) provided in series in communication with the outside of the outlet on the same axis as the combustion chamber,
The boiler heat exchange device includes a cylindrical case (2) that can be attached to the outlet side of the discharge chamber (C), and a heat transfer body (8) that can be accommodated in the discharge chamber (C).
The case (2) has an inner diameter that is substantially the same as the inner diameter of the discharge chamber (C), and has a flange (4) on one end face in the axial direction, and the other end face is closed by an outer closing lid (5),
One end side (outer end: 8a) in the axial direction of the heat transfer body (8) protrudes outside the case (2), and the other end side (inner end: 8b) is accommodated in the case (2). Attached to the case (2),
The case (2) is provided with an inlet (13) and a delivery port (9) in communication with the case (2),
The case (2) is attached to the outside of the discharge chamber (C), and the outer end (8a) of the heat transfer body (8) protruding outside the case (2) is accommodated in the discharge chamber (C). Then, the heat transfer body (8) is heated by the exhaust heat in the discharge chamber (C), and the case (2) is heated,
The gas sent from the intake port (13) into the case (2) and sent out from the delivery port (9) was heated by the exhaust heat in the case (2).
A boiler heat exchanger. A boiler (A) for heating the inside of the agricultural house, a heat exchange device (1) attached to the boiler (A), and a circulation pipe (11) connected to the heat exchange device (1),
The heat exchange device (1) is a boiler heat exchange device according to any one of claims 1 to 3 ,
The heat exchange device (1) is attached to the outside of the discharge chamber (C) or the combustion chamber (B) of the boiler (A),
The circulation pipe (11) is piped inside or outside the agricultural house, one end of which is the introduction end (3a) of the medium passage (3) of the heat exchange device (1), and the other end is the discharge end. Connected to the part (3b),
The medium fed into the medium passage (3) is heated by the exhaust heat of the boiler (A), passes through the circulation pipe (11), and returns to the medium passage (3).
A heating system that uses the exhaust heat of a boiler. The boiler (A) for heating the inside of the agricultural house, the heat exchange device (1) that can be attached to the boiler (A), and the gas heated by the heat exchange device (1) are returned to the boiler (A). A delivery path (10);
The heat exchange device (1) is a boiler heat exchange device according to claim 4 ,
The heat exchange device (1) has a cylindrical case (2) attached to the discharge chamber (C) of the boiler (A), and one end side of a heat transfer body (8) attached to the case (2) ( The outer end: 8a) is accommodated in the discharge chamber (C),
The blower (12) is connected to the intake port (13) of the case (2), one end of the delivery path (10) is connected to the outlet (9) of the case (2), and the other of the delivery path (10). The end is connected to the intake port (F) communicating with the heating space (G) on the outer periphery of the combustion chamber of the boiler (A),
The gas fed into the case (2) from the intake port (13) of the case (2) is heated by the heat transfer body (8) heated by the exhaust heat in the discharge chamber (C) of the boiler (A). Heated in the heated case (2), and from the outlet (9) of the case (2) through the inlet (F) of the boiler (A) to the heating space (G) of the boiler (A) It is sent, reheated in the heating space (G), and discharged from the discharge duct (H) of the boiler (A) into the agricultural house.
A heating system that uses the exhaust heat of a boiler.

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