JP2011089653A - Heat exchange device for boiler and heat utilization warming system 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

  TECHNICAL FIELD The present invention relates to a boiler heat exchange device that can be connected to a boiler, and a heat utilization heating system for a boiler including the heat exchange device.

  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 is provided with a discharge duct H that is overheated by combustion, the outer periphery of which is heat-exchanged by air sucked from the intake port F, and the heat-exchanged air is discharged to the outside. Yes.

  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 utilize the exhaust heat of the boiler, and a heat utilization heating system for a boiler equipped with the heat exchanger.

  The boiler heat exchange device according to the present invention includes a cylindrical base body that can be attached to the outside of the exhaust port of the boiler, and a medium passage attached to the base body. The medium is heated by exhaust heat exhausted from the exhaust port when the substrate is attached to the outside of the exhaust port.

  The boiler heat exchanging device of the present invention includes a cylindrical base body that can be attached to the outside of the exhaust port of the boiler, and a heat transfer body attached to the base body. When the substrate is attached to the outside of the exhaust port, it is heated by exhaust heat exhausted from the exhaust port.

  The boiler heat exchanging device according to the present invention is the boiler heat exchanging device according to claim 1 or 2, wherein the base is a cylindrical case, and an exhaust port is provided in the cylindrical case. It is provided.

  The boiler heat utilization heating system according to the present invention is such that the base body of the boiler heat exchange device according to any one of claims 1 to 3 is attached to the outside of the exhaust port of the boiler. The heating pipe connected to the inside or outside of the agricultural house is connected to the medium passage of the boiler heat exchanging device, and the medium heated by the heat from the exhaust port of the boiler is supplied to the medium passage. A circulation device is provided for sending the medium to the warm pipe and returning the medium from the warm pipe to the medium passage.

  In the boiler heat utilization heating system according to the present invention, the base of the boiler heat exchange device according to claim 3 is attached to the outside of the exhaust port of the boiler, and is heated by the heat discharged from the exhaust port of the boiler and its heat. Provided with a delivery path that sends the heat from the heat transfer body to the gas passage on the outer periphery of the combustion chamber of the boiler, and a heat exchange device for the boiler provided with a blower opening for sending the wind that sends the heat to the delivery path. is there.

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 installation work is also easy.

The boiler heat utilization heating system 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 heat utilization heating system of the boiler heat exchange apparatus at the time of making all the medium passages be 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 heat utilization heating system of the boiler heat exchange apparatus and the boiler which attached it when a part of heat exchanger protrudes out of a case, (b) is sending out Cross-sectional explanatory drawing of the boiler combustion chamber which shows the flow of the air sent from the 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. There is a ring-shaped connecting rod 4 at one end of the case 2 in the axial direction, and the connecting rod 4 can be attached to the flange E of the discharge chamber C with a connecting tool such as a bolt or a nut. 2 is communicated with the discharge chamber C of the boiler A so that the heat in the combustion chamber B passes through the discharge chamber C and is sent into the case 2. The other axial end of the case 2 is closed with a disk-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 plant to be cultivated, depending on the fuel used, one end of the exhaust pipe 6 is placed in the agricultural house within a range that does not adversely affect the human body or plant (cultivated product). 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 installed 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 to the outside of the lid 5 that closes the case 2, and can be connected to the medium supply pipe 11a and the heating pipe 11b. 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 heat exchanging pipe 3 is placed in the case 2 and the other part is protruded outside the case 2. That is. 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 firewood E, the heat exchange pipe 3 is accommodated in the discharge chamber C of the boiler A so that the medium flowing through the heat exchange pipe 3 in the discharge chamber C is heated by the heat of the combustion chamber B. It is. 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 is projected outside the case 2. In this heat exchange device 1, when the case 2 is attached to the eaves E of the discharge chamber C on the extension line end side of the combustion chamber B of the boiler A, the protruding portion of the heat transfer body 8 is accommodated in the discharge chamber C of the boiler A. Thus, the heat in the discharge chamber C is transferred to the case 2. 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.

  An exhaust 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 exhaust heat in the case 2 in a desired direction can be attached to the exhaust port 9. The exhaust port 9 can also be provided on a side other than the outer peripheral surface of the case 2, for example, on the side surface of the case 2. A blower port 13 is provided on the opposite side of the case 2 from the exhaust port 9. When air is sent from the blower 12 such as a fan to the air outlet 13, the heat in the case 2 is sent out to the air outlet 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 exchanging 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 the boiler heat utilization heating system of the present invention)
The heat exchange device used in the heat utilization heating system of the boiler of the present invention may be any of those shown in FIGS. 1 to 6, but in this embodiment, the case of using the heat exchange device of FIG. 1 is taken as an example. explain. 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 by 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.

  The medium supply pipe 11a is connected to the introduction end 3a of the heat exchange pipe 3 of the heat exchange device 1, and the heating pipe 11b is connected to the introduction end 3a, and either the medium supply pipe 11a or the heating pipe 11b is connected. The fan 12 is connected to the heat exchange pipe 3 so that a medium (for example, water, hot water, air, etc.) is supplied to the heat exchange pipe 3 so that the medium (for example, hot water, hot air) in the heat exchange pipe 3 can be circulated. It is. 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 boiler heat utilization heating system of the present invention)
An example of an embodiment of a heat utilization heating system for a 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 exhaust port 9 of the heat exchange device 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 manner, the exhaust heat that has been released to the outside from the discharge chamber C of the boiler A is sent again into the space G of 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 Heat exchange pipe 3a Introduction end 3b Discharge end 4 Connecting rod 5 Lid 6 Exhaust cylinder 7 Substrate 8 Heat transfer body 9 Exhaust port 10 Delivery path 11a Medium supply pipe 11b For heating Pipe 12 Blower 13 Air outlet 14 Drain 15 Cleaning window A Boiler B Combustion chamber C Discharge chamber D Chimney E Ｆ F Inlet G Space H Discharge duct I Fluid path J Burner P Pump

Claims (5)

  A cylindrical base that can be attached to the outside of the exhaust port of the boiler, and a medium passage attached to the base, and the medium in the medium passage is discharged from the exhaust port when the base is attached to the outside of the exhaust port. A heat exchanger for a boiler, which is heated by heat.   It has a cylindrical base that can be attached to the outside of the exhaust port of the boiler, and a heat transfer body attached to the base, and the heat transfer body is caused by exhaust heat exhausted from the exhaust port when the base is attached to the outside of the exhaust port. A boiler heat exchanger characterized by being heated.   The boiler heat exchange apparatus according to claim 1 or 2, wherein the base body is a cylindrical case, and an exhaust port is provided in the cylindrical case.   The base of the heat exchanger for boilers according to any one of claims 1 to 3 is attached to the outside of an exhaust port of the boiler, and is piped inside or outside the agricultural house in a medium passage of the heat exchanger for boilers. A circulating device connected to the heating pipe, fed to the medium passage and heated by the heat from the exhaust port of the boiler to the heating pipe, and returns the medium from the heating pipe to the medium passage. Boiler heat utilization heating system characterized by that.   4. The boiler heat exchanger according to claim 3 is mounted on the outside of the exhaust port of the boiler, and heat discharged from the exhaust port of the boiler and heat from a heat transfer body heated by the heat are combusted in the boiler chamber. A heat utilization heating system for a boiler, characterized in that a delivery path for sending to the gas passage on the outer periphery of the boiler is provided, and a blower port for sending wind for sending the heat to the delivery path is provided in the boiler heat exchanger.

Images