JPH0619973Y2 - Panel heat exchanger - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention provides a plurality of hollow panels for heat exchange arranged in parallel at appropriate intervals to integrate them, and causes a fluid for heat exchange to circulate in each of these hollow panels. The panel type heat exchanger configured as described above, which is mainly used by being set in a fluid storage tank or in a flow path of the fluid, which is symmetrical to heat exchange, and which is used in each hollow panel and each hollow The present invention relates to a panel heat exchanger configured to perform heat exchange with a fluid located in a gap between panels or a fluid flowing in the gap.

(Prior Art and its Problems) The panel heat exchanger as described above is provided with a fluid supply pipeline and a fluid discharge pipeline that pass through a plurality of hollow panels arranged in parallel in the parallel direction, The fluid flowing through the fluid supply pipe is branched into each hollow panel, and the fluid after heat exchange that has flowed through a predetermined flow passage in each hollow panel is merged into the fluid discharge pipe and discharged. In the conventional panel-type heat exchanger of this type, the fluid supply conduit and the discharge conduit are configured as follows.

That is, through holes are provided so as to face each other on both sides forming each hollow panel, and short tubular bodies are fixedly protruded by welding from these through holes, and both hollow panels are connected to each other between adjacent hollow panels. By fitting the protruding cylindrical bodies to each other and fixing and connecting the both cylindrical bodies to each other by welding at the fitting position, a fluid supply pipe line or a fluid discharge penetrating each hollow panel in its parallel direction. The pipeline was constructed.

In the conventional panel type heat exchanger having such a structure, a large number of hollow panels arranged in parallel are integrated by the fluid supply pipe and the discharge pipe so as not to be disassembled. Generally, in this type of panel heat exchanger, the gap between the hollow panels is very narrow, around 20 mm, so if the hollow panels cannot be separated from each other as described above, the gap between the hollow panels will be reduced. Even if the scale of the circulating fluid adheres to the surface of the hollow panel, it is almost impossible to clean and remove it. Therefore, the conventional panel-type heat exchanger is used only when the fluid flowing through the gaps between the hollow panels is almost free of scale generation and adhesion, resulting in a drastically limited application. It was

On the other hand, in terms of manufacturing, as described above, it is necessary to fix a short tubular body to each end of each hollow panel by welding, and in the extremely narrow space between the two adjacent hollow panels, both tubular bodies must be secured. The fact that they must be joined by welding has the drawback that the manufacturing cost is extremely high.
In particular, as described above, it is not possible to manually weld the fitting portions of both tubular bodies over the entire circumference in an extremely narrow space between the adjacent hollow panels, and therefore a dedicated automatic welding machine is required. I was trying.

An object of the present invention is to provide a panel heat exchanger that can solve the above problems.

(Means for Solving the Problems) In order to achieve the above object, in the panel heat exchanger of the present invention, two plates 2 and 2 are provided with a flow path 3 between these plates 2 and 2. In the hollow panel 1 for heat exchange formed by joining as described above, a through hole 6 for forming a fluid supply pipe line and a through hole 7 for forming a fluid discharge pipe line are separately provided, and a through hole 9 is formed. A panel reinforcing ring 8 having a large diameter ring portion 8a having an inner diameter larger than the inner diameters of the through holes 6, 7 and a small diameter ring portion 8b having an outer diameter substantially equal to the inner diameter of the through holes 6, 7 is provided. The large ring portion 8a is on both plates 2,
It is mounted so that it is interposed between the two and the small diameter ring portion 8b projects outward from the through holes 6 and 7 of the other plate 2, so that the plurality of hollow panels 1 are attached to the plate 2 of each hollow panel 1. The elastic seal ring 10 is externally fitted to the small diameter ring portion 8b of each panel reinforcing ring 8 protruding from the through holes 6 and 7, and the protruding end portion of this small diameter ring 8b is adjacent to the plate 2 of another hollow panel 1. Bolts and nuts, which are superposed in the corresponding through holes 6 and 7 of the above, and pass through the through holes 6 for forming the fluid supply pipeline and the through holes 7 for forming the fluid discharge pipeline, respectively. It is integrally fastened with 15.

EXAMPLE An example will be described with reference to the drawings. In FIGS. 1 to 3, 1 is a rectangular hollow panel for heat exchange, and 2 is a hollow panel for heat exchange.
Both plates 2 are integrally joined by seam welding (the welded portion is indicated by 4) along both side edges of the flow path 3 so as to form a substantially U-shaped band-shaped flow path 3 between the plates 2. It is what is formed.

The hollow panel 1 is provided with circular wide portions 5 formed by bulging both plates 2 outward at both ends of the flow path 3, and the circular wide portions 5 are provided on both plates 2 at both ends. A through hole 6 for forming a fluid supply conduit and a through hole 7 for forming a fluid discharge conduit are provided. The circular wide portion 5 is formed in each hollow panel 1 as can be understood from FIG.
Which are respectively disposed on the left and right sides of the upper end portion of the above, and a wide portion 5 on the left side thereof has a through hole 6 for forming a fluid supply pipeline and a wide portion 5 on the right side for forming a fluid discharge pipeline. Through holes 7 are formed so as to be concentric with the wide portion 5. A panel reinforcing ring 8 is provided on the hollow panel 1 to reinforce the two plates 2 forming the panel 1 at the through hole 6 for forming the fluid supply conduit and the through hole 7 for forming the fluid discharge conduit. Is provided. That is, as shown in FIG. 3 and FIG. 4, the reinforcing ring 8 is connected to the large-diameter ring portion 8a on one end side and the large-diameter ring portion 8a through the engaging portion 8c. It consists of a small diameter ring portion 8b on the end side, and before mounting the two plates 2 forming this hollow panel 1 by welding, as shown in FIG. Each panel reinforcing ring 8 is interposed between the wide portions 5, and the small diameter ring 8b of the panel reinforcing ring 8 is fitted into each through hole 6, 7 from the inside of the wide portion 5 of one plate 2 and protrudes to the outside. Then, in this state, the plates 2 are butted against each other and seam-welded along both side edges of the flow path 3, whereby the panel reinforcing ring 8 has the small diameter ring portion 8b of the wide portion 5 of one plate 2. It projects through the through holes 6 and 7 and penetrates the locking step 8c. It is interposed between both plates 2 while being locked to the inner opening edges of the holes 6 and 7 and the tip of the large-diameter ring portion 8a being brought into contact with the inner surface of the wide portion 5 of the other plate 2. Become. Further, the large-diameter ring portion 8a of the panel reinforcing ring 8 is provided with a large number of U-shaped cutout hole-shaped circulating holes 9 at a constant pitch in the circumferential direction. Therefore, each reinforcing ring is provided via these circulating holes 9. The inside of 8 and the internal flow path 3 of the hollow panel 1 can flow. Each panel reinforcing ring 8 is concentric with each through hole 6, 7 and is interposed between both plates 2. The shape of the flow hole 9 is not limited to the U-shaped cutout hole as shown in the drawing, but may be any shape such as a round hole.

As for the hollow panels 1, the required number of sheets are superposed in parallel so that the through holes 6 for forming the fluid supply conduits and the through holes 7 for forming the fluid discharge conduits of each hollow panel 1 are positioned coaxially. In this superposition, an O-ring 10 as an elastic seal ring is externally fitted to the small diameter ring 8b of the panel reinforcing ring 8 projecting from the through holes 6 and 7 of the plate 2 of the hollow panel 1 during this superposition. , And this O-ring
A backup ring 11 is externally fitted to 10 (see FIG. 5). The backup ring 11 has an O-ring
The ring width is slightly larger than the outer diameter of 10 and the ring width is slightly smaller than the ring width of the O-ring 10. Then, the required number of hollow panels 1 are arranged such that the projecting end portions of the small diameter ring 8b of the panel reinforcing ring 8 projecting from the through holes 6 and 7 of the plate 2 on one side between the adjacent hollow panels 1 are aligned with each other. The fluid supply pipe line forming through holes 6 and the fluids are formed by being overlapped with each other while being fitted into the corresponding through holes 6, 7 of the plate 2 on the other side between the adjacent hollow panels 1. The through holes 7 for forming the discharge pipes are connected to each other through the respective panel reinforcing rings 8 to form a fluid supply pipe 12 and a fluid discharge pipe 13 which penetrate the required number of the hollow panels 1 in the parallel direction. It is formed. In this case, inside the fluid supply pipeline forming through-hole 6 group and the fluid discharge pipeline forming through-hole 7 group, which are interconnected through the respective reinforcing rings 8, there are long panels for fastening the panel. Bolts 14 are respectively inserted coaxially, and the nut members 15 are tightened so that the hollow panels 1 are fastened and integrated in the axial direction of the fluid supply conduit 12 and the fluid discharge conduit 13. At this time, the respective O-rings 10 which are externally fitted to the small-diameter ring portions 8b of the respective panel reinforcing rings 8 and are interposed between the plates 2 of the adjacent hollow panels 1 facing each other are also the hollow panels 1 adjacent to each other. Each backup 11 interposed between the plates 2 facing each other is compressed and deformed to a functioning state, whereby the outer peripheries of the fluid supply conduit 12 and the fluid discharge conduit 13 are completely watertightly sealed.

The fluid supply conduit 12 and the fluid discharge conduit 13 formed as described above are attached in a penetrating state to a support plate 16 also serving as a cover plate, as shown in FIGS. 1 and 2. One end of each of the main pipes 17 and 18 is connected to the fluid discharge main pipe 18, and a boss member 19 for bolt support is radially provided inside the main pipes 17 and 18 so as to project radially from the outer periphery thereof. A head 14a side end of a bolt 14 inserted into the fluid supply conduit 12 is fitted and supported by a boss member 19 on the fluid supply main pipe 17 side, which is attached concentrically via a fluid discharge main pipe 18 The head 14a side end of the bolt 14 inserted into the fluid discharge conduit 13 is fitted and supported on the side boss member 19, and the fluid supply conduit is connected to the tip screw side end of each bolt 14.
A disk-shaped end plate 20 that can be fitted to the other end of each of the fluid discharge conduit 12 and the fluid discharge conduit 13 is inserted and supported, and a nut member 15 is screwed into the tip screw portion 14b. Therefore, by tightening the nut members 15, the required number of hollow panels 1 are fastened and integrated in a state of being sandwiched between the fluid supply main pipe 17, the fluid discharge main pipe 18 and the end plates 20. still,
A seal ring fitting step 20a is provided on the inner peripheral edge of each end plate 20.
Is provided, and the O-ring 10 is fitted to this.
A backup ring 11 is fitted on the ring 10.
Further, in order to prevent the screw portion 14b of each elongated bolt 14 from being corroded by the heat exchange fluid, the inner peripheral surface of the central hole portion of the end plate 20 through which the bolt 14 penetrates, and this end plate. 20
The inner surface of the nut member 15 that abuts the outer surface of the
21 and 22 are installed respectively. Each hollow panel 1 is a panel reinforcing ring interposed between both plates 2 and 2.
Due to 18, there is no pressing deformation during fastening with the bolt 14 and the nut member 15.

Also, as shown in FIGS. 1 and 2, each hollow panel 1
Both corners on the free end side (lower end side) of the hollow panel 1 are attached to the support plate 16 and penetrate the seam welds 4 of the hollow panels 1 and the spacers 23 are loosely fitted between the hollow panels 1. Bolt 24 for panel connection and this bolt 24
It is fastened and integrated by a nut 25 screwed to the tip screw portion of the. 26, a panel type heat exchange consisting of a required number of hollow panels 1 which are fastened and integrated with each other and supported by a support plate 16 which also serves as a cover plate in the second fluid flow tank to be subjected to heat exchange. The container is inserted into the flow tank 26 through the inlet / outlet port 27, is inserted into the flow tank 26 through the inlet / outlet port 27, and the lid plate / support plate is attached to the mounting flange 28 provided at the outer peripheral edge of the inlet / outlet port 27. 16 is abutted,
The support plate 16 is fastened by a bolt 29 that is preliminarily provided at a desired position on the flange 28 and a nut 30 that is screwed to the bolt 29, and the entrance 27 of the flow 26 is closed. Further, flanges 31 and 32 for connecting the fluid introduction pipe and the fluid discharge pipe are provided at the outer ends of the fluid supply main pipe 17 and the fluid discharge main pipe 18, respectively.

In the panel heat exchanger configured as described above,
The fluid supplied from the fluid supply main pipe 17 is the fluid supply pipe 12
Then, this fluid flows into one end of the U-shaped flow path 3 in each hollow panel 1 through the through hole 9 of the panel reinforcing ring 8 interposed in each hollow panel 1, and the U-shaped It flows in the flow path 3 to reach the other end, and then flows into the fluid discharge conduit 13 from the outer periphery of the fluid discharge conduit 13 through the through holes 9 of each panel reinforcing ring 8, and this fluid discharge conduit It is discharged from inside 13 through a fluid discharge main pipe 18.

Therefore, one of the two fluids (the first fluid) that heat-exchange with each other is supplied to the fluid supply main pipe 17,
By allowing the other fluid (second fluid) to flow in the circulation tank 26, the second fluid flows in each hollow panel 1 while flowing in the gap 33 between each hollow panel 1. 1
A heat exchange action is performed between the fluid and a desired heat treatment involving heating or cooling is performed.

The panel heat exchanger used as described above can be disassembled and cleaned as follows.

First, the nuts 30 are removed to remove the support plate 16 that also serves as a cover plate.
Of the panel type heat exchanger attached to the support plate 16 by pulling out the water to the outside.
Can be extracted from. Then, the nut member 15 screwed and tightened to each bolt 14 for panel fastening and the nut 25 screwed and tightened to each bolt 24 for panel connection are respectively removed, and each end plate 20 is removed from the bolt 14. In addition, while removing the spacers 23 from the bolts 24 and pulling out the hollow panels 1 in the axial direction along the bolts 14 and 24, the panel-type heat exchanger is provided with the hollow panels 1
It can be disassembled for each part, so that the required maintenance work can be performed easily and easily.

In the embodiment described above, the nut member 15 and the end plate 20 may be integrally formed. That is, the end plate 20 may be part of the nut member 15. Further, in the above-described embodiment, when connecting the hollow panels 1 to each other, the small diameter ring portion 8b of the panel reinforcing ring 8 interposed in the adjacent hollow panels 1 is used.
Although the protruding end of the hollow panel 1 is directly fitted into the through holes 6 and 7 of the other hollow panel 1, a spacer 34 is interposed between the hollow panels 1 as shown in the embodiment of FIG. The hollow panels 1 may be connected to each other via the spacers 34. That is, as shown in FIG. 7, the spacer 34 has a large-diameter ring portion 34a having an outer diameter slightly larger than the outer diameter of the backup ring 11, and the through holes 6, 7 of the hollow panels 1. Small diameter ring that can be fitted to
The O-ring 10 is externally fitted to the small-diameter ring portion 34b, and a backup ring is attached to the O-ring 10.
11 is externally fitted, and the tip of the small diameter ring portion 34b in the spacer 34 is fitted into the through holes 6 and 7 of the adjacent hollow panel 1 and the inner circumference of the large diameter ring portion 34a. The protruding end of the small-diameter ring portion 8b of the panel reinforcing ring 8 protruding from the other hollow panel 1 is fitted into the portion.
Other configurations are the same as those in the previous embodiment.

(Effect of the Invention) In the panel heat exchanger of the present invention, the required number of hollow panels are fitted with the elastic seal ring on the small diameter ring portion of each panel reinforcing ring protruding from the through hole of each hollow panel. The protruding end of the small diameter ring is polymerized in a state where it is fitted into the corresponding through hole of the plate of another adjacent hollow panel,
Just by fastening from both ends of the required number of hollow panels by bolts and nuts that penetrate through the inside of each of the through hole group for forming the fluid supply pipeline and the through hole group for forming the fluid discharge pipeline of these panels, Assembly can be performed easily and easily. Contrary to this assembly, the fastening state of each hollow panel is released by loosening and removing the nut, and each hollow panel can be axially pulled out along the bolt, so disassembly is easy and easy. Therefore, when the scale of the second fluid flowing in the gaps between the hollow panels adheres to the surface of each hollow panel and the heat exchange efficiency is reduced, or the flow resistance of the second fluid is unduly increased. By disassembling and separating each hollow panel as described above, necessary maintenance work such as scale removal on the surface of the hollow panel can be performed extremely easily. Therefore, the panel-type heat exchanger of the present invention can be utilized without trouble even under the condition of using the second fluid in which scale easily occurs and adheres.

In the panel heat exchanger of the present invention, the through holes for forming the fluid supply pipes and the protruding ends of the panel reinforcing rings protruding from the through holes are superposed and connected to each other to form the fluid supply pipes. Along with the formation, the through holes for forming the respective fluid discharge pipelines and the projecting ends of the panel reinforcing rings projecting from the respective through holes are polymerized and connected to each other to form the fluid discharge pipelines. Since it is not necessary to perform welding work unlike the panel type heat exchanger of No. 3, and the hollow panel can be processed by simply boring a through hole, the manufacturing is very easy. Further, in this case, in the fluid supply pipeline and the fluid discharge pipeline, an elastic seal ring is externally fitted to the protruding end portion of the panel reinforcing ring protruding from each through hole of each hollow panel, and each seal ring is hollow. Since it is in close contact with the outer surface of the panel, it is completely isolated from the outside world that is the flow path of the second fluid, and there is no possibility of contact with the second fluid. Therefore, the fluid supply pipeline and the fluid discharge pipeline are ,
It suffices as long as the pipe is made of a material that does not adversely affect the relationship with the first fluid flowing in these pipes, and there is no need to select the material in consideration of the conditions of both the first fluid and the second fluid. . For example, when the first fluid is water, hot water, steam or the like, even if the second fluid is strongly acidic, the fluid supply pipeline and the fluid discharge pipeline are made of inexpensive iron-based material (SS or SU).
It is economical because it is possible to use the one composed of S etc.).

Further, according to the panel heat exchanger of the present invention, the panel reinforcing ring has a through hole and a large diameter ring portion having an inner diameter larger than the inner diameter of the through hole and an outer diameter substantially equal to the inner diameter of the through hole. It consists of a small diameter ring part, the large diameter ring part is interposed between both plates of each hollow panel, the small diameter ring part is projected outward from the through hole of the other plate,
Since the elastic seal ring is fitted onto this, and the protruding end of this small diameter ring is fitted into the corresponding through hole of the plate of another adjacent hollow panel, In addition to the function to reinforce the hollow panel, the panel reinforcement ring functions as a pedestal for mounting the elastic seal ring, the function to connect the through holes of each hollow panel to each other, and the coaxial to each hollow panel along each through hole. It also has the function of linear positioning.

In this way, a single panel reinforcing ring has four functions of a hollow panel reinforcing function, a seal ring mounting base function, a hollow panel through hole connecting function, and a hollow panel positioning function. Since it is possible to reduce the number of parts as much as possible, it is possible to easily assemble and manufacture each hollow panel, and to assemble and disassemble each hollow panel quickly and easily, which reduces the cost of the panel heat exchanger. The cost can be reduced.

[Brief description of drawings]

1 is a partially longitudinal side view of a panel heat exchanger showing an embodiment of the present invention, FIG. 2 is a partial sectional view of FIG. 1, and the left side portion thereof is a sectional view taken along the line AA of FIG. Figure, right part is a sectional view taken along the line BB, FIG. 3 is an enlarged longitudinal sectional view of an essential part of the heat exchanger shown in FIG. 1, and FIG. 4 is an explanatory view showing a method for mounting a panel reinforcing ring in a hollow panel. 5 is an explanatory view showing a method of attaching an O-ring and a backup ring to a panel reinforcing ring attached to a hollow panel, FIG. 6 is a sectional view similar to FIG. 3 showing another embodiment, and FIG. The figure is a vertical sectional view showing a spacer. 1 ... Hollow panel, 2 ... Plate, 3 ... Flow path, 6 ...
… Through hole for forming fluid supply conduit, 7 …… Through hole for forming fluid discharge conduit, 8 …… Panel reinforcing ring, 9 …… Flow hole, 10 …… O-ring (elastic seal ring), 11… … Backup ring, 12 …… Fluid supply conduit, 13 …… Fluid discharge conduit, 14 …… Panel fastening bolts, 15 …… Nut member.

Claims (1)

[Scope of utility model registration request] 1. A hollow panel for heat exchange formed by joining two plates so as to form a flow path between these plates, a through hole for forming a fluid supply conduit and a fluid discharge conduit. A through hole for forming is separately provided, and has a through hole and a large diameter ring portion having an inner diameter larger than the inner diameter of the through hole and a small diameter ring portion having an outer diameter substantially equal to the inner diameter of the through hole. The panel reinforcing ring is attached so that the large-diameter ring portion is interposed between the plates and the small-diameter ring portion projects outward from the through hole of the other plate. An elastic seal ring is externally fitted to the small diameter ring portion of each panel reinforcing ring protruding from the through hole of the plate of the hollow panel, and the protruding end portion of this small diameter ring corresponds to the through hole of the plate of another adjacent hollow panel. In the state Combined and, bolts and the panel-type heat exchanger formed by fastening integrally with a nut respectively through the through-hole group of the through hole group and the fluid discharge conduit for forming a fluid supply conduit formed.