FI113084B - Heat exchanger and its manufacturing process - Google Patents

Description

113084 Process for the manufacture of a heat exchanger and this heat exchanger

Divided by application 924603.

The present invention relates to a heat exchanger comprising a heat exchanger part formed from a plurality of rectangular heat-conducting plates arranged to be stacked on top of one another like a laminate so as to leave a predetermined gap between the adjacent plates to effect heat exchange or heat and moisture exchange. wherein the heat-conducting plates 10 are held in place by four L-shaped corner frame members each having a resilient sealing member in sealing contact with said corner edge portion of the heat exchanger portion, and curing, viscous and 15 fluid sealants have been introduced into the gap. The invention further relates to a process for manufacturing a heat exchanger, which method comprises stacking a plurality of rectangular heat-conducting plates in the same manner as a laminate, leaving a predetermined gap between adjacent plates to effect heat exchange or heat exchange, in the L-shaped corner frame pieces, the sides to be fitted against the corner edge portion of the heat exchange section have a flexible sealing member which is brought into sealing contact against said corner edge portions.

Typical heat exchanger and ventilation for ventilation. The apparatus (hereinafter simply referred to as a conventional apparatus) is prepared, for example, as described in Japanese Open Utility Model Patent Publication No. 63-181,743. 11, the heat exchanger 31 is mounted transversely to the central portion of the box-shaped main housing 30 by the supply air blower 33; · * 30 being placed behind the heat exchanger 31 while chamber 34 again being placed in front of the heat exchanger 31. In addition, a second exhaust air blower 33 is positioned in front of the heat exchanger 31 while the second chamber 34 is set. tuna behind it. The exhaust air inlet port 35 and the supply air outlet port 36 are formed on one side of the main housing 30 with the exhaust air outlet port 37 and the supply air 35 inlet port 38 formed on the other side of the enclosure 30. The exhaust air inlet port 35 is in direct communication with the chamber 34, which in turn is connected to the outlet air outlet port 37 via a single fluid medium conduit for the heat exchanger 31, which slopes downwardly through the opening portion formed by the chamber 34 and the outlet fan 33. On the other hand, the supply air inlet port 38 disposed in the corner portion opposite the exhaust air inlet port 35 is in direct communication with the second chamber 34, which in turn communicates with the exhaust air outlet port 36 via a second fluid drive A series of passages from the chamber 34 to the fan time 33 blowing the exhaust air heat exchanger 31 through one of the fluid communication drive paths serve as exhaust air passages to remove the outside air from the room, while a series of passages from the second chamber 34 to the fan 33 the supply air heat exchanger 31 through the other passages 15 for the fluid, serve as the supply air passages for supplying the outdoor air to the room. As can be seen from the above description, the exhaust air passage is isolated from the supply air passage.

A conventional device manufactured as described above is installed in a designated space below the ceiling of a room to perform a ventilation function by means of ducts through which the air supply passage is communicated outside the room. In more detail, the room air is supplied to the vent through the exhaust air inlet port 35, whereby air is vented outside the room via the exhaust air outlet port 37 and the pipeline. On the other hand, fresh outdoor air is supplied to the air supply passage through the supply air inlet port 38, whereby it is supplied to the room via the supply air outlet port 36 and the pipeline. The heat exchange is performed as the supply air flow passes through the heat. through the passageways for the fluid 31 of the exchanger, whereby the room is ventilated through the flow of both the supply air and the exhaust air, with only minor variations on the side of the device.

Figures 12-14 show a conventional heat exchanger described, for example, in the Japanese Open Utility Model Patent Publication *. No. 57-178 988. In the drawings, reference numeral 51 denotes a heat exchange section comprising a plurality of heat-conducting plates 4 laminated to each other with a predetermined gap between adjacent plates for exchanging heat and humidity i 35. Reference numeral 43 denotes plates affixed to opposite surfaces of heat exchange section 51 and reference numeral 44 frames, each of which is fixed to each corner portion of heat exchange section 51 and thereafter secured to plates 43 via clamping screws 45. Reference numeral 46 designates a sealing member which hermetically seals the gap between the heat exchange section 51 and the frame 44.

A heat exchanger constructed as described above is installed at a point where the air supply passage crosses the air outlet of the ventilation device (not shown) to simultaneously supply and extract air into the room, the plates 43 and frames 44 of the heat exchange section 51. When the ventilator operates, the airflow P from inside the room and the airflow Q from outside the room simultaneously enter the heat exchange section 51 where the heat exchange is performed between these flows, and after this heat exchange, the second airflow P 'and the second airflow Q' leave the heat exchange section 51.

In the conventional device described in Japanese Open Utility Model Patent Publication No. 15 63-181 743, the air supply passage and the exhaust air passage must be limited to meet the small dimensions of the device in the narrow interior, and the / backwards and also up / down mouth 20. Thus, there is the problem that both the air supply and the exhaust air passages are complex in structure and have irregular passages; . raising resistance in the context of expanded airflow. Another problem; : is that air leaks tend to occur inside the main housing 30.

; In Japanese Open Utility Model Patent Publication No. In the conventional heat exchanger described in 57-178 988, the sealing member 46 is often unable to completely close the space between the heat exchange section 51 and the frames 44 due to the surface tension therein, although this space is filled with the sealing member 46, causing easy hollow spaces and air pockets 14. . Thus, there is a problem 30 that the airflow P from the room and the airflow Q from the outside penetrate into these slits, thereby performing the heat exchanger performance. . : getting worse.

It is an object of the present invention to solve the above problems.

It is an object of the present invention to provide a heat exchanger which ensures that the space 4 113084 between the heat exchange part and each frame is completely closed by a sealing member to prevent both air leaks and air flow from entering the room and from outside the room to the above space. .

It is a further object of the present invention to provide a process for the manufacture of a heat exchanger of the type described above.

The heat exchanger according to the invention is characterized in that the sealing body is impregnated with a sealing material which, when cured, fills the space between the adjacent plates of the heat exchanger portion and extends into the sealing piece to anchor the sealing member as a heat exchanger portion.

The method according to the invention is further characterized in that the step of introducing a curable viscous fluid sealant into a corner portion between adjacent plates by allowing the sealant to penetrate into the sealing piece to cure and subsequently anchor the heat exchange portion as a heat exchange part.

In the context of the heat transfer and ventilation device utilizing the present invention, a portion of the air supply passageway in the left half of the main housing is limited by a : On the right-hand side, the other partition wall is bounded in the same way as for the air supply channel. Thus, this device is constructed in such a way that it exhibits only a slight airflow resistance, since both the air supply and suction outlet are made of direct bus sections.

In addition, since the contact surfaces of each partition are provided with air-tight maintenance members, excellent airtightness is ensured for both the air supply and the air outlet.

In addition to the aforementioned functional characteristics, since the room air blowing direction and the outdoor air blowing direction can be selectively altered by the angle setting of the fans, this device can also be used in connection with ducts that are to be connected to it in directions other than those described above.

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Especially when the bypass is opened by actuating the trap, the indoor or outdoor air can flow through the bypass but not the heat exchanger. Thus, ventilation can be achieved without heat exchange.

In connection with the heat exchanger of the present invention 5, the resilient sealing member is fixed to the inner wall surface of each frame, and then the sealing member is coated with a sticky sealing fluid. Thus, the space or gap between the heat exchange member and each frame can be sealed in a reliable manner by means of a sealing member and sealing fluid.

Figure 1 is a perspective view of the heat exchange and ventilation device 10 (hereinafter referred to as the device only) showing in particular the essential component parts of this device, Figure 2 is a perspective view of several component parts of the device when disassembled, Figure 3 is a sectional view of the device; its way of working.

As shown in Figure 1, a rectangular column-headed heat exchanger 2 having a laminated structure is mounted in the center of the rectangular box-like main housing 1 in a transverse direction with the left and right halves of the main housing 1 aligned symmetrically with the central heat exchanger. The left half of the main housing 1 includes a pu-20 fan for blowing the supply air and a partition member 5, while the right half of the main housing includes a blower 4 for blowing exhaust air and the partition member 5. Particularly when the rectangular or as a downwardly pivoting top cover, the main housing 1 of the device includes a heat exchanger 2 having a laminate structure in the center and a pair of partition members 5 arranged 25 to the right and left half of the main housing 1 symmetrically with respect to the heat exchanger 2. Each partition wall member 5 is bent in a straight line. . at an angle around the respective fan to independently restrict the exhaust or supply air passage for the flow of outdoor air. One end of the exhaust passage is connected to the exhaust air inlet port 7 on the left side of the main housing 1 with its other end 30 connected to the exhaust air outlet port 8 on the right side of the main housing 1 via a fan 4. On the other hand, one end of the air supply passage is connected to the inlet air port 9 on the left side of the main housing 1 via a fan 3 while its other end is connected to the supply air outlet port 10 on the right side of the main housing 1 via the fan 3. The sealing members 11 are secured to a contact surface of the main housing: 35 lon which comes into contact with the top cover 6 and to the upper corner portion of the top cover 6 which contacts the heat exchanger 2 6113084 to maintain air tightness along these contact surfaces.

As shown in Fig. 2, each partition member 6 comprises a partition 12 positioned on the heat exchanger side in contact with the front or rear panel 5 of the main housing 1 with the longitudinal partition 13 extending forward or rearwardly of the main housing 1 and its transverse partition 14 extending substantially all the way to the front or back. The partition member 5 is attached to the main housing 1 so that its upper end is flush with the upper end of the main housing. All of the surfaces of each partition wall 5 that come in contact with some other members are lined with sealing liners 11 to maintain airtightness on these surfaces. The lower edge 12 of the partition wall 12 on the heat exchanger side and the inner end surface of the transverse partition 14 are in contact with the angular portion of the heat exchanger 2 in its intermediate position to define a boundary between one and the other open surface of the running medium. In the case of partition members 5 manufactured as described above, the inner part of the main housing 1 is divided into four parts, i. upper front, upper rear, lower front and lower rear.

A fan 3 for blowing the supply air is mounted in a substantially square area delimited by partition 20 20, partition 13, front or rear surface of main housing 1 and its side surface with its suction port located at its lower part and its outlet port communicating with supply air outlet port 9 direction. Similarly, the blower 4 blowing the exhaust air is:, mounted on the rear or front surface of the partition 12, the partition 13, the main housing 1 and the like. : A substantially square area delimited by 25 side surfaces with its inlet port; · Is located at its lower part and its outlet port is connected to the supply air outlet port V. ' tin 8 horizontally. In this construction, the lower part of the area defined by the damping wall 13, the partition 14, the rear or front surface of the main housing 1 and its sidewall is kept closed with the dividing wall 14 at an intermediate height position. * · Air inlet port 10 or outlet air port 10, and its inner portion held open to a surface communicating with the upper drive passage for the fluid medium of the heat exchanger 2. The bottom side • · of the main housing 1 is divided into two parts with the heat exchanger 2 in the middle, the left side 35 being connected to the suction side of the fan 3 and the right side of the right side to the fan 4 suction side.

7 113084 In the case of a device manufactured in this way, the air supply and air outlet are connected to the room to be ventilated via pipelines (not shown). 3 and 4, the room air is supplied to the main housing 1 via the exhaust air inlet port 7, with this air flowing linearly through an exhaust passageway extending downwardly downwardly from an exhaust passage delimited by partitions 13 and 14 and a heat exchanger 2 coming to the bottom side of the right side of the main housing 1, whereby it is sucked by the fan 4 and finally discharged from the room into the open air through the exhaust air outlet port 8 via a conduit. On the other hand, fresh outdoor air is supplied to the main housing 1 via the supply air inlet port 10 as this air flows linearly through the exhaust air conduit defined by the partitions 13 and 14 and through the second fluid supply conduit by means of a fan 3 and finally discharged to the room via the supply air outlet port 9 via a conduit. The heat exchange is performed between the air supply flow and the exhaust flow as these flows through the fluid passages in the heat exchanger, whereby air ventilation is provided by both the air supply and the vent flow with only a small variation in the operating mode of the device. A characteristic feature of the device is that the left and right halves of the main housing 1 are symmetrically positioned with the heat exchanger 2 in the middle, and that: the air supply and exhaust air passages are formed by connecting the heat exchange 2 to the straight partition walls 5. Both. The 25 air supply and duct passages are simple in design and provide only minimal resistance to air flow while maintaining excellent suction through the sealing members 11. In addition, since the aforementioned symmetrical structure of the device makes it easy to form the internal structure of the device, the service of the device can be easily accomplished, Figure 5 shows a plan view of a heat exchange and ventilation device (hereinafter referred to as the device only). In this embodiment, the device is constructed such that two supply air outlet ports 9, two supply air inlet ports 10, two exhaust air outlet ports 8 and two exhaust air inlet ports 7 are formed by a 90 ° mutual offset so that they can be selectively opened in M: 35 and close. The internal structure of this device is similar to that of the first embodiment, except that the fans 8 and 113084 are set in displaced positions at 90 ° to the fans of the first embodiment. Further, in this embodiment, fasteners 15 are used for fixed mounting of fans 3 and 4, even when they are pivotally angled by 90 ° with respect to the positions in which they are fastened to the partition members 5 according to the first embodiment.

In the case of a device constructed as described above, the supply air exhaust ports 9, the supply air supply ports 10, the exhaust air outlet ports 8 and the exhaust air supply ports 7 may be selectively opened at a 90 ° angle to each other. Thus, the pipelines can be connected to the device with a high degree of freedom, particularly in terms of directionality. In other words, the device can be installed only with minor restrictions.

Figure 6 is a sectional view of a third heat exchange and ventilation device, while Figure 7 is a vertical sectional view of the device of Figure 6. The device according to this embodiment is constructed so that a longitudinally extending slot is formed between the inner side wall of the heat exchanger 2 and the front or rear surface of the main housing 1; formed by the aforementioned slot. Further, the drive flap 17 is disposed on the result page of the bypass 16. The drive flap 17 opens and closes in the heat exchanger. meen 2 leading lane opens and closes. Because of the above; the deviating structure is similar to that of the first embodiment,:, _ there is no need to repeat the description.

In the case of a device manufactured as described above, the ventilation operation is carried out while the bypass passage 16 is kept open, in particular: ♦ I t v * to enjoy a pleasant feeling in the spring or autumn, without the need for normal inlet and outlet, but without heat exchange and ventilation.

Figs. 8-10 show a fourth heat exchange and ventilation device (which. hereinafter is referred to as the device only). In Fig. 8, reference numeral 20 characters,! : see the heat exchanger 21 heat exchanger parts. The heat exchange section 20 is made of a plurality of rectangular heat-conducting plates 22 laminated. attached to one another with a predetermined gap between adjacent plates, I ·; : 35 with each plate equipped with heat exchange or heat and moisture exchange properties. Reference numeral 23 denotes a plate affixed to the upper and lower surfaces of a warm 113084 g replacement part 20. Reference numeral 24 denotes a frame to be attached to each corner portion 25 of the heat exchanger section 20. Frame 24 is made to be bent to provide an L-shaped cross section so that it comes into close contact with corner portion 25 with its opposite ends secured to the plates. 23 using clamping screws (not shown). Reference numeral 26 denotes a sealing member which is fixedly fixed to the inner wall surface of the frame 24. This sealing member is molded from a resilient material such as an artificial resin. Reference numeral 27 denotes a sealant comprising a highly sticky liquid material. Whether the sealing surface of the member 26 is coated with this sealant 27.

The device constructed in the above manner is assembled as follows. First, sealing member 26 is fixed to the inner wall surface of each frame 24 using adhesive, and then sealing member 26 is coated with a sufficient amount of sealant 27 without damage, such as uncoated points or the like. The frame 24 is then secured to each of the corner portions 25 of the heat exchange section 20 before the sealant 27 has cured. The opposite ends of the frames 24 are then fixed to the plates by means of clamping screws. The heat exchanger is installed where it crosses the air supply bus of the ventilation unit (not shown) in the same way as with a conventional heat exchanger. When the heat exchanger is mounted in this way, the air supply passages are limited by the plates 23 and the frames 24. As shown in Figure 8, the room air flow P and! .. the outdoor air flow Q comes with the ventilation unit operating simultaneously with the heat; to the exchange section 20, where the heat exchange is performed between the two flows. When the heat exchange is completed, the second air flows P 'and Q' leave • »· '; It should be noted that no air leakage occurs in any position in the region where the frames 24 are in contact with the corner portions 25 of the heat exchanger 20 due to the fact that the sealing members 26 * · * are coated with sealant. 27 as each air flow P and Q passes through the heat exchange section 20. Alternatively, the sealant may be coated: 30 into respective corner portions 25. The sealant may further be coated on the inner wall surface of each plate.

It goes without saying that the heat exchanger manufactured in the manner described above can be connected to the heat exchanger and ventilation device according to any one of claims 1, 2 and 3.

As will be clear from the foregoing, the portion of the air supply passage is limited in one half of the main housing with the heat exchanger 10113084 in the middle of a single partition contained in the partition wall pair comprising a partition on the heat exchanger side; in the left / right direction, in the forward / backward direction and in the up / 5 downward direction, while the other partition wall also defines a portion of the air outlet passage in the other half of the main housing as in the air supply passage. Thus, both the air supply and the exhaust air passage can be made by a straight passage having a simple design and providing little resistance to the air flow. Thus, the heat exchanger and ventilation device can be manufactured at a lower cost while maintaining excellent air tightness in both the air supply and exhaust air passages.

Each partition member is manufactured as a single bent sheet and the areas where the respective partitions of each partition member are in contact with the main housing and the heat exchanger are lined with airtightness members. Thus, another advantage provided by the present invention is that the airtightness of the heat exchange and ventilation device can be improved.

The direction of room air blowing and the direction of outdoor air blowing can be selectively changed using the angle setting of the fans. Thus, the degree of freedom with respect to the directionality of the pipeline connection can be increased.

In addition, room air or outdoor air can also be led directly through the bypass, but not through the heat exchanger, with the * in the bypass being open. Thus, normal ventilation can be achieved without air. . by means of inlet and outlet without any heat exchange, especially in the middle of the year; · 'Na, ie. spring or fall. Thus, this heat exchanger and ventilation device '. 25 activities can be improved.

In accordance with the essential idea of the invention, a heat exchanger which: * comprises a heat exchanger portion laminated in structure, comprising a plurality of: rectangular heat-conducting plates laminated to each other such that a predetermined gap is formed between adjacent plates; * For 30 toilets and for heat and humidity exchange, plates mounted on opposite ends of the heat exchanger section and four L-shaped frames fitted for heat exchange /. at the four corner portions of the part, is improved such that the elastic sealing member is fixed; affixed to the inner wall surface of each frame, followed by a sealing member overlay

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with a sticky sealant. Thus, the areas where the heat exchanger corner: 35 chaos are in contact with the frames are completely sealed without the risk of air leakage. Thus, the efficiency of the heat exchange and its reliability can be improved as well.

Fig. 1 is a perspective view of a heat exchange and ventilation device according to a first embodiment; Figure 2 is a periodic perspective view of the heat exchange and ventilation device of Figure 1, showing in particular the essential component parts constituting this heat exchange and ventilation device;

Figure 3 is a sectional view of the heat exchange and ventilation device of Figure 1, showing in particular the mode of operation of this device; Figure 4 is a vertical sectional view of the heat exchange and ventilation device of Figure 1, showing in particular the mode of operation of this device;

Fig. 5 is a sectional view of a heat exchange and ventilation device according to another embodiment; Figure 6 is a sectional view of a heat exchange and ventilation device according to a third embodiment;

Figure 7 is a front elevational view of the heat exchange and ventilation device of Figure 5;

Fig. 8 is a perspective view of a heat exchanger according to a fourth embodiment, showing in particular the essential component parts constituting this heat exchanger in a disassembled state;

Fig. 9 is a cross-sectional view of the heat exchanger of Fig. 8. taken along line A - A ';

Figure 10 is an enlarged periodic cross-sectional view. 25 of the heat exchanger of Figure 9; Fig. 11 is a perspective view of a conventional heat exchange and ventilation device; Fig. 12 is a perspective view of a conventional heat exchanger; Fig. 13 is a cross-sectional view of a conventional heat exchanger taken along line B-B 'of Fig. 12; ; Fig. 14 shows an enlarged periodic cross-sectional view

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! 13 of the conventional heat exchanger.

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Claims (4)

12 113084 A heat exchanger (21) comprising a heat exchange section (20) formed by a plurality of rectangular heat-conducting plates (22) arranged to be stacked on top of one another in the manner of a laminate so as to leave a predetermined gap between adjacent plates. or to provide heat and moisture exchange, wherein the heat-conducting plates (22) are held in place by four L-shaped corner frame members (24) each having a resilient sealing member on the side adapted to be mounted against the corner portion (25) of the heat exchange member. (26) in sealing contact 10 against said corner portion (25), and in the gap between heat-conducting plates (22) in the corner portion (25) of the heat exchange portion, a curing, viscous and fluid sealing material (27) is provided. impregnated with a sealant (27) which, when cured, fills the heat exchange o the space between the adjacent plates of the sanitary corner portions (25) and 15 extends integrated with the sealing member to anchor the sealing member to the corner portion of the heat exchange member. 2. Color coding system patent numberav 1, the coding mechanism for this type of coding (27), and the abstraction of the color plate (23), the color coding system (23), the coding system (20). . Heat exchanger according to Claim 1, characterized in that a sealing material (27) is also located inside the two end plates (23) of each heat exchanger section, the end plates of which are arranged at opposite ends of the heat exchanger section (20). A method of manufacturing a heat exchanger (21) comprising stacking a plurality of rectangular thermally conductive plates (22) in the same manner as a laminate, leaving a predetermined gap between adjacent plates to provide heat exchange or heat and moisture. For providing a heat exchange portion (20) in the heat exchanger section (20), the cross-sectional portions (24) of the cross-sectional portion (24) having a heat sealing member (26) adapted to the heat exchange portion (25); which is brought into sealing contact against said corner edge portions (25), characterized by the step of introducing cured viscous fluid sealant 30 (27) into the corner portion (25) between adjacent plates, such that the sealing material is ·. allowing (27) to penetrate into the sealing member (26) to cure and then anchor the sealing member into the corner portion '' (25) of the heat exchange member. A method according to claim 3, characterized in that the sealing agent (27) is applied to the inside of the two end plates • · / (23) of each heat exchange section before being fitted, preferably by means of fastening screws, to opposite ends of the heat exchange section (20). 13 113084 Värmeväxlare (21) innefattande en Värmeväxlande sektion (20) upp-byggd av et antal rectangular flutter plattor (22) utformade för att staples on stock sasom i ett laminat, med upprätthallande av ett förbestämt av-5 stand mellan intill tillhandahälla coloring elling uterte av colors och fukt, colors de coloring plattoma (22) fixeras med hjälp av fyra stycken, i tvärsnitt L-formade hömramelement (24) som vart och ett, pa den sida som är anpassad för att anbringas pä ett hörnparti 25) av den coloring sectionland uppbär et elastiskt tätningselement (26) i tätande anliggning 10 mot nämnda hömpartier (25) och et härdbart, viskö och flytande tätningsme-del (27) and abradingat mellanrummet mellan intilliggande platt hörnpartier (25), tongue and groove attachment (26) and impregnerat av tätningsmedlet (27) som i härdat tillständ utfyl-ler mellanrum met mellan intilliggande plattor i den Värmeväxlande sektionen 15 hörnpartier och sträcker sig integrerat in i tätningselementet förankring av tät-ningselementet vid hömpartiet av den Värmeväxlande sektionen. 3. Förfarande att tillverka en värmeväxlare (21), innefattande att ett I '· antal rectangular lare flattening plattor (22) staplas on varandom säsom i et ». minat med förbestämda avständ mellan intilliggande plattor för att upp¤me colors- I 1 växling eller utbyte av colors och fukt i en Värmeväxlande section (20), colors i: 25 tvärsnitt L-formade hömramelement (24) head sida som är anpassad för att anbrad. (1) (25) av den Värmeväxlande sectionen uppbär et live-tiskt tätningselement (26) som bringas i tätande anliggning mot this höm-> '' partier (25) kännetecknat av steget att ett härdbart, visköst och flytande tätningsmed i hömpartiet mellan intilliggande plattor pädant '30 provision, att tätningselementet (27) medges intränga i tätningselementet (26) för att därv efter härda och förankra tätningselementet vid hömpartiet av den Värmeväxlan-: de sektionen. (· J 4. Förfarande enligt patentkrav 3, kännetecknat av att nämnda tätningsmedel (27) anbringas Päididan av den color-changing section (23) fåre deras montering, företrädesvis med hjälp av fäst-skruvar (23). ) inbördes motstäende ändar.