JP2012193895A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger capable of improving a heat transfer performance, saving space by miniaturization, and reducing work steps during assembly by a configuration which is advantageous in terms of costs.SOLUTION: The heat exchanger includes: a thin box-like box body 1 which includes an upper plate 21 and a lower plate 22 and is provided with an entrance 4 and an exit 5 of one fluid; a flow channel 6 of one fluid configured to reach the exit 5 from the entrance 4 of the one fluid by a rising part 71 integrally formed on the box body 1; and a flow channel pipe 10 formed corresponding to the flow channel 6 of the one fluid to communicate with an entrance 8 and an exit 9 of the other fluid formed on the thin box-like box body 1, and installed inside the flow channel 6 of the one fluid.

Description

  The present invention relates to a heat exchanger that exchanges heat between two kinds of fluids.

  As shown in FIGS. 14 (A) and 14 (B), such a heat exchanger improves heat transfer performance by increasing the heat transfer area in the heat exchanger 100 that performs heat exchange between two types of fluids. In order to reduce the size, there is known (for example, Patent Document 1).

  That is, the two types of drawn plates 101a and 101b are joined to the peripheral wall 102a and 102b to form a thin rectangular box, and on the wall surface 104 of the corrugated channel member 103, the left and right alternating side end positions are placed. An opening 105 is formed, and the flow path member 103 is accommodated in the box with the upper and lower folded surfaces joined to the plates 101a and 101b, and the outlets 107a and 106b are opened from the inlets 106a and 106b opened to the peripheral edges 102a and 102b of the box. A flow path 108 for one fluid (water) reaching 107b is formed, and a narrow tube 111 having an inlet 109 and an outlet 110 for the other fluid (refrigerant) is attached in a meandering manner to the outer surface of the box. The other fluid flow path is formed by joining the plates 101a and 101b.

  However, since the flow path of the other fluid by the narrow tube 111 is formed outside the box body with respect to the flow path 108 of the one fluid formed in the box, the flow path of the one fluid is also flowed. Since the fluid and the other fluid flowing through the narrow tube 111 are not opposed to each other, sufficient heat transfer performance cannot be obtained between the one fluid and the other fluid. Therefore, it has been difficult to improve the heat transfer performance and further reduce the size of the heat exchanger.

  In addition, since one of the fluid flow paths 108 is configured by housing the flow path member 103 inside the box, the one fluid flow path 108 cannot be configured with only two types of plates 101a and 101b. The number of types of members increases, which is disadvantageous in terms of cost and has a problem that the number of work steps when assembling increases.

JP 2003-314975 A

  In view of the above problems, an object of the present invention is to provide a heat exchanger that can improve the heat transfer performance by making two types of fluids flow in opposite directions, and reduce the number of work steps during manufacturing with a simple configuration. And

  In order to achieve the above-described object, the present invention has the following features.

  A thin box-shaped box comprising an upper plate and a lower plate and having an inlet and an outlet for one fluid, and a rising portion formed integrally with the box to reach the outlet from the one fluid. The one fluid channel is formed corresponding to the one fluid channel configured as described above and the other fluid channel, and communicates with an inlet and an outlet of the other fluid formed in the box. And a channel pipe installed in the channel.

  Further, the box is formed in a thin rectangular shape, and the flow path of the one fluid is provided in a plurality of rising portions extending from one side of the opposite side portion of the box to the other side, and the rising portion. It is characterized by being formed in a serpentine shape with the communication part.

  Further, the box body is formed in a thin circular shape, and the flow path of the one fluid is formed in a spiral shape at a rising portion extending from an outer edge portion to a center portion of the box body.

  Further, the flow path of the one fluid and the flow path pipe are configured such that the one fluid and the other fluid circulate opposite to each other.

  ADVANTAGE OF THE INVENTION According to this invention, the heat exchanger which can reduce the work process at the time of manufacture with a simple structure can be provided by making the flow of two types of fluid into a counterflow, improving heat-transfer performance.

It is explanatory drawing of 1st embodiment of the heat exchanger by this invention. It is a disassembled perspective view which shows the 1st example of 1st embodiment of the heat exchanger by this invention. It is explanatory drawing of 1st embodiment of the heat exchanger by this invention, (A) is principal part explanatory drawing seen from the side surface, (B) is principal part explanatory drawing which excluded the upper plate. It is a disassembled perspective view which shows the 2nd example of 1st embodiment of the heat exchanger by this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of 1st embodiment of the heat exchanger by this invention, (A) is the figure which showed the lower plate, the corrugated board, and the flow-path pipe, (B) looks at (A) from the side. It is the principal part explanatory drawing, (C) is a side view of a box. It is explanatory drawing which shows the 3rd example of 1st embodiment of the heat exchanger by this invention, (A) is the figure which showed the upper plate and the flow-path pipe, (B) is (A) from the downward direction (C) is a side view of the upper plate and the channel tube. It is explanatory drawing which shows the 4th example of 1st embodiment of the heat exchanger by this invention, (A) is the figure which showed the upper plate and the flow pipe, (B) is the upper plate and the flow pipe (C) is the figure which looked at (A) from the side. It is principal part explanatory drawing of 1st embodiment of the heat exchanger by this invention, (A) is a perspective view which shows an example, (B) is a perspective view which shows another example. It is a disassembled perspective view which shows the 1st example of 2nd embodiment of the heat exchanger by this invention. It is principal part explanatory drawing of 2nd embodiment of the heat exchanger by this invention, (A) is an exploded sectional view, (B) is an assembly sectional view, (C) is a perspective view. It is a disassembled perspective view which shows the 2nd example of 2nd embodiment of the heat exchanger by this invention. It is explanatory drawing which shows the 3rd example of 2nd embodiment of the heat exchanger by this invention, (A) is a disassembled perspective view, (B) reverses the front and back of the lower plate shown to FIG. 12 (A) FIG. It is principal part explanatory drawing of the 2nd example of 2nd embodiment of the heat exchanger by this invention, (A) is AA sectional drawing shown in FIG. 11, (B) is FIG. 13 (A). It is sectional drawing of a corresponding upper plate. It is explanatory drawing of the heat exchanger by a prior art example, (A) is a principal part disassembled perspective view, (B) is a top view.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings.

The heat exchanger according to the present invention is of a type incorporated in, for example, a heat pump type water heater using a refrigerant as a heat source, and between the water that is one fluid and the refrigerant that is the other fluid and serves as a heat source. Thus, it is possible to supply hot water that has been effectively raised in temperature so that heat can be exchanged efficiently and the size can be reduced.

  As a configuration for that, as shown in FIG. 1 to FIG. 13, a thin box-shaped box 1 comprising an upper plate 21 and a lower plate 22 and having an inlet 4 and an outlet 5 for one fluid (water), One fluid passage 6 formed so as to reach the outlet 5 from the inlet 4 inside the box 1, and the other fluid (refrigerant) inlet 8 and outlet 9 provided in the box 1 communicate with each other. , And a flow channel pipe 10 installed in the flow channel 6 of one of the fluids.

  The heat exchanger shown in FIG. 1 is a plan view with the upper plate 21 removed, in which a flow channel tube 10 is installed in one fluid flow channel 6 and flows through one fluid flow channel 6. The flow of one fluid (arrow A1 and arrow A2) and the flow of the other fluid (arrow B1 and arrow B2) flowing through the flow channel tube 10 are opposed to each other.

  For example, in the heat exchanger 100 shown in FIGS. 14 (A) and 14 (B), water and the thin refrigerant tube 111 are not in direct contact with each other. Loss occurs. On the other hand, in the embodiment of the present invention, since water and the flow path pipe 10 are in direct contact, heat can be efficiently exchanged between the water and the refrigerant.

  In addition, since the water flowing in the flow path 6 of one fluid and the refrigerant flowing in the flow path pipe 10 are arranged to face each other, the water and the refrigerant are circulated orthogonally. Thus, heat can be exchanged efficiently between water and the refrigerant.

  Thereby, since the performance as a heat exchanger can be improved by improving the heat transfer performance between two types of fluids, the heat exchanger can be downsized.

Note that the two types of fluids are not limited to water and refrigerant. For example, by configuring the air flow and the refrigerant flow to face each other, the performance of the heat exchanger used in the air conditioner can be improved, so that it can contribute to higher performance or downsizing of the air conditioner. become.
<First embodiment>

  Here, a first embodiment of the heat exchanger according to the present invention will be described below with reference to FIGS.

  As shown in FIGS. 1 to 8, the heat exchanger according to the first embodiment of the present invention is an upper plate facing up and down formed by drawing a metal plate such as copper or aluminum into a shallow container shape (concave shape). 21 and the lower plate 22 are joined to the peripheral edge 31 of the upper plate 21 and the peripheral edge 32 of the lower plate 22 to form a thin rectangular box 1.

  The box 1 is provided with one fluid inlet 4 and one fluid outlet 5 at the peripheral edges 31 and 32 of the side portions facing forward and backward.

  Moreover, the corrugated board 7 is accommodated in the inside of the box 1, and as shown in FIG. 1, the corrugated board 7 is the other side b from the one side a facing the left and right of the box 1. A parallel flow path is formed by a plurality of rising portions 71 across, and adjacent parallel flow paths are connected by a communication portion 72 provided in the rising portion 71, so that one side portion facing the front and rear of the box body 1 is provided. A serpentine channel extending from the side c to the other side d is formed.

  A meandering flow path extending from one side c facing the front and back to the other side d communicates with one fluid inlet 4 and outlet 5 provided on the one side c and the other side d. As shown by arrows A1 and A2 in FIG. 1, one fluid flow path 6 in which one fluid reaches from the inlet 4 to the outlet 5 is formed.

  The other fluid inlet 8 and outlet 9 are provided on one side a of the side of the box body 1 facing the left and right. The meanderingly formed fluid passage 6 has a meanderingly formed passage pipe 10 corresponding to the one fluid passage 6 extending from the other fluid inlet 8 to the outlet 9. It is installed in.

  The meandering channel tube 10 has both end portions 10 a fixed to the other fluid inlet 8 and outlet 9, and a bent portion 10 b installed in the communicating portion 72 is provided in the communicating portion 72. By being supported by the support portion 33, it is installed at the center of the cross section in the flow path 6 of one fluid.

  As a result, as shown in FIGS. 1 to 3, the corrugated plate 7 is housed in the box 1 composed of the upper plate 21 and the lower plate 22, and the flow path pipe meandered in the flow path 6 of one fluid. 10, the peripheral edge 31 of the upper plate 21 and the peripheral edge 32 of the lower plate 22 forming the box 1, the corrugated plate 7 in the box 1 and the box 1, the corrugated plate 7 and the flow path of one fluid A heat exchanger can be formed by brazing the flow path pipe 10 in the 6.

  In addition, as shown in FIG. 2 and FIG. 3 (A), the support part 33 which supports the bending part 10b of the flow-path pipe 10 bends and forms the rising part 71 of the corrugated plate 7. In this case, it is only necessary to form a bend. At that time, since the height is lower than the rising portion 71, the structure is not a double-joint structure in which the upper end is bent, but the upper end is not bent. do it.

  Further, as shown in FIG. 4 and FIGS. 5 (A) and 5 (B) as a second example, the support portion 33 that supports the flow channel pipe 10 is a flow channel 6 for one fluid of the corrugated plate 7. It may be configured to be bent so as to stand up in the case, and in that case, the flow path is formed by forming the upper end portion into a concave curved shape along the outer peripheral surface of the flow path tube 10 to be supported. The tube 10 can be positioned and supported at the center of the cross section in the flow path 6 of one fluid. Further, by brazing the support portion 33 to the straight portion of the flow channel tube 10, the support portion 33 has a function as a heat transfer member of the flow channel tube 10, thereby reducing the heat transfer area of the flow channel tube 10. Will increase.

  In addition, the flow path pipe 10 when the other fluid outlet 9 is provided in the upper plate 21 is formed from the upper plate 21 as shown in FIGS. 6A to 6C as a third example. A plurality of height adjusting portions 101 bent to adjust the distance (height) of the flow channel tube 10 may be aligned with the center of the cross section in the flow channel 6 of one fluid.

  At this time, by providing the upper plate 21 with the positioning portion 211 for positioning the tip of the height adjusting portion 101, the flow channel pipe 10 can be aligned with the center of the cross section in the flow channel 6 of one fluid. The positioning unit 211 for positioning the height adjusting unit 101 may be configured by an uneven portion formed on the upper plate 21 corresponding to the shape of the height adjusting unit 101 of the flow channel tube 10. Alternatively, the height adjustment unit 101 may be brazed to the positioning unit 211.

  As shown in FIGS. 7 (A) to 7 (C) as a fourth example, the flow path pipe 10 accommodated in the flow path 6 of one fluid has a first flow path 10c and a second flow path as a plurality of flow paths. A configuration having a flow path 10d may also be used. For example, it may be configured by a perforated tube, and thereby the heat transfer performance can be improved by increasing the flow rate and heat transfer area of one fluid flowing through the flow path 6 of one fluid. become.

  In addition, the flow channel tube 10 accommodated in the flow channel 6 of one fluid is corrugated to the bent portion 10b of the flow channel tube 10 as shown in FIG. 8A. The auxiliary bending portion 102 for positioning with respect to the plate 7 is continuously formed, and the corrugated plate 7 is provided with the concave groove 71a corresponding to the auxiliary bending portion 102 so that the auxiliary bending portion 102 is positioned in the left-right direction of the box 1. Positioning can be performed by the groove 71a so as not to shift. The auxiliary bending portion 102 may be clamped by a clamping member (not shown) facing the concave groove 71a when positioned by the concave groove 71a.

  At this time, since the auxiliary bending portion 102 is bent in a U-shape, the bent U-shape is regulated so as not to be displaced in the front-rear and left-right directions of the box body 1 by the concave groove 71a. Is done.

  Further, the channel tube 10 accommodated in the one fluid channel 6 has a U-shaped groove 71b corresponding to the auxiliary bending portion 102 in the corrugated plate 7 as in another example shown in FIG. By providing, the auxiliary bending part 102 may be positioned by the U-shaped groove 71b so as not to be displaced in the vertical direction of the box 1.

As shown in FIG. 14 (A) and FIG. 14 (B), the flow path pipe 10 is installed inside the flow path 6 of one fluid, so that the flow path 108 of one fluid formed in the box body is provided. On the other hand, compared to the configuration in which the flow path of the other fluid by the narrow tube 111 is formed outside the box, in the embodiment of the present invention, the entire circumference is in direct contact with one fluid and the other fluid. Since heat is exchanged with the flow path pipe 10, the heat exchanger can improve heat transfer performance.
<Second Embodiment>

  Next, a second embodiment of the heat exchanger according to the present invention will be described below based on FIGS. 9 to 13.

  In the heat exchanger according to the second embodiment of the present invention, as shown in FIGS. 9 to 13, the box 1 includes an upper plate 21 and a lower plate 22 in which a synthetic resin is molded, and the upper plate 21 is The lower plate 22 is formed in a shallow container shape (concave shape). By making the box 1 made of synthetic resin, heat loss due to heat transfer from the surface of the box 1 can be reduced as compared with the case where the box 1 is made of metal.

  The upper plate 21 and the lower plate 22 are joined through the O-ring 11 assembled to the peripheral edge 31 and the peripheral edge 32, and a plurality of screws 12 that have passed through the insertion holes 211 provided in the peripheral edge 31 are screw holes provided in the peripheral edge 32. A thin rectangular box 1 is formed by screwing and fixing to 221. The screw 12 may be tightened with a nut (not shown) instead of being screwed into the screw hole 221.

  As shown in FIG. 9 as a first example of the second embodiment, the lower plate 22 constituting the box 1 is the same as that of the first embodiment (see FIG. 1). An inlet 4 and an outlet 5 for one fluid are formed on the side facing the front and rear, and an inlet 8 and an outlet 9 for the other fluid are formed on the side facing the left and right of the box 1. Yes.

  In addition, the lower plate 22 forms a parallel flow path by integrally forming a plurality of rising portions 71 extending from one side a to the other side b of the side portion facing the left and right of the box body 1, One side c of the side part facing the front and rear of the box 1 is made similar to the first embodiment (see FIG. 1) by connecting adjacent parallel flow paths at the communication part 72 provided in 71. A serpentine channel extending from one side to the other side d is formed.

  A meandering flow path extending from one side c to the other side d facing the front and rear is communicated with an inlet 4 and an outlet 5 of one fluid provided at the front part c and the rear part d of the box 1. Thus, one fluid flow path 6 is formed in which one fluid reaches from the inlet 4 to the outlet 5. Thereby, since the lower plate 22 integrally forms the rising portion 71, the number of parts can be reduced as compared with the configuration in which the flow path 6 of one fluid is provided in the box 1 with an individual flow path member.

  The box 1 is configured such that the peripheral edge 31 of the upper plate 21 and the peripheral edge 32 of the lower plate 22 are in close contact with each other via the O-ring 11 housed in the O-ring groove 222.

  In addition, between the peripheral edge 31 of the upper plate 21 and the peripheral edge 32 of the lower plate 22, you may interpose not only the structure which interposes the O-ring 11, but another member like the sealing sheet | seat made to closely_contact | adhere. Although not shown, the O-ring 11 is interposed, and a close-contact member is also interposed between the upper end portion of the rising portion 71 and the upper plate 21, thereby sealing one fluid flow path 6. become able to.

  One fluid inlet 4 includes a tube body 41 having a threaded portion, and a flare nut 43 in which a fluid tube is connected to the threaded portion of the tube body 41 via a packing 42 is screwed. Thus, one of the fluids can flow from the inlet 4. Moreover, although the duplication of description is avoided, the outlet 5 through which one fluid flows out has the same configuration.

  On one side a of the side portion of the lower plate 22 facing the left and right, the other fluid inlet 8 and outlet 9 are provided in the same manner as in the first embodiment (see FIG. 1). One of the formed fluid flow paths 6 has a flow path pipe 10 formed in a meandering manner corresponding to the one fluid flow path 6 so as to reach from the other fluid inlet 8 to the outlet 9. It is installed.

  The meandering flow channel pipe 10 has both ends 10 a fixed to the other fluid inlet 8 and outlet 9, and a bent portion 10 b installed in the communication portion 72 is provided in the communication portion 72. By being supported by the portion 33, it is installed at the central portion of the cross section in the flow path 6 of one fluid.

  As shown in FIG. 9 and FIG. 10 (A), both end portions 10a of the meandering flow channel tube 10 are brazed with a tube body 91 having a threaded portion, an incompletely threaded portion, and a flange portion. After the O-ring 92 is passed through the outer periphery of the incomplete thread portion of the tube body 91 and the flow channel tube 10 is passed through the other fluid inlet 8 and outlet 9 as shown in FIG. A nut 93 is screwed onto the threaded portion of the body 91 and fixed by screw tightening.

  The flange portion of the pipe body 91 is formed in a hexagonal shape (or a quadrangular shape) as shown in FIG. 10C, and correspondingly, a concave portion having an inlet 8 and an outlet 9 for the other fluid is By being formed in the same shape as the portion, when the nut 93 is fastened to the threaded portion of the tubular body 91, it does not idle.

  Further, as shown in FIG. 11 as a second example of the second embodiment, the box body 1 includes an upper plate 21 formed in a circular flat plate shape and a corresponding circular shallow container shape (concave shape). A plurality of screws through which the peripheral edge 31 of the upper plate 21 and the peripheral edge 32 of the lower plate 22 are joined via the O-ring 11 and through the insertion hole 211 provided in the peripheral edge 31. 12 may be formed into a thin circular box shape by being screwed and fixed to a screw hole 221 provided in the peripheral edge 32. The screw 12 may be tightened with a nut (not shown) instead of being screwed into the screw hole 221.

  In addition, between the periphery 31 of the upper plate 21 and the periphery 32 of the lower plate 22, not only the structure which interposes the O-ring 11 but you may interpose other members, such as the sheet | seat for sealing tightly. . Although not shown, the O-ring 11 is interposed, and a sealing member is also interposed between the upper end portion of the rising portion 71 and the upper plate 21, thereby sealing one fluid flow path 6. become able to.

  As shown in FIG. 11, the upper plate 21 constituting the box 1 includes an inlet 4 and an outlet 5 for one fluid. One fluid inlet 4 and outlet 5 may be provided in the lower plate 22. The peripheral edge 31 of the upper plate 21 is provided with insertion holes 211 corresponding to the plurality of screw holes 221 provided in the peripheral edge 32 of the lower plate 22.

  The lower plate 22 constituting the box 1 is provided with an outlet 9 for the other fluid at the bottom of the shallow container shape facing the inlet 4 for one fluid and a shallow container facing the outlet 5 for one fluid. The other fluid inlet 8 is provided at the bottom of the shape. The other fluid inlet 8 and outlet 9 may be provided in the upper plate 21.

  Similarly to the configuration described with reference to FIG. 9, the inlet 4 and the outlet 5 of one fluid are provided with a tube body 41 provided with a threaded portion. The flare nut 43 to which the fluid pipe is connected is screwed, so that one of the fluids can flow from the inlet 4 and can flow out from the outlet 5.

  Further, the lower plate 22 is raised from the bottom to constitute one fluid flow path 6 composed of a spiral flow path from the other fluid outlet 9 to the other fluid inlet 8. The rising portion 71 is integrally formed. Thereby, compared with the structure which provides the flow path 6 of one fluid with the separate flow path member in the box 1, the number of parts can be decreased.

  As shown in FIG. 13 (B), the bottom of one channel 6 may have a curved shape with the center substantially bulging outward, thereby depending on the physical properties, temperature, flow rate, etc. of one fluid. And the performance as a heat exchanger can be optimized by changing the cross-sectional shape and cross-sectional area of one flow path 6.

  The upper plate 21 constituting one flow path 6 may also have a curved surface shape as shown in FIG. 13 (A), so that the flow of one flow can be changed according to the physical properties, temperature, flow velocity, etc. of the one fluid. The performance as a heat exchanger can be optimized by changing the cross-sectional shape and cross-sectional area of the path 6. Although not shown, the cross-sectional shape of one channel 6 may be changed as appropriate so that the one channel 6 is not easily clogged by the scale.

  The box body 1 can be formed into a curved surface by molding the fluid flow path 6 of one fluid, and the lower plate 21 has a rising portion 71 constituting the fluid flow path 6 of one fluid. In addition, the number of parts can be reduced by integrally forming the support portion 33 that supports the flow channel tube 10.

  The flow path 6 of one fluid formed in a spiral shape has a flow path pipe 10 formed in a spiral shape corresponding to the flow path 6 of one fluid in the inside thereof, from the inlet 8 to the outlet 9 of the other fluid. It is installed to reach.

  The flow path tube 10 formed in a spiral shape is fixed to the inlet 8 and the outlet 9 at both ends 10a bent by the auxiliary bending portion 102 toward the inlet 8 and the outlet 9 of the other fluid, By being supported by the support portion 33 provided in the one fluid flow path 6, it is installed at the center of the cross section in the one fluid flow path 6.

  Both end portions 10a of the flow channel tube 10 formed in a spiral shape are integrated by brazing a tube body 103 including a threaded portion, an incomplete threaded portion, and a flange portion. After the O-ring 104 is passed through the outer periphery and the other fluid inlet 8 and outlet 9 are passed through, the nut 105 is screwed from the back side of the lower plate 22 and fixed by screwing.

  One of the fluid flow paths 6 is formed in a spiral shape, and the flow path pipe 10 is formed in a spiral shape, so that the flow path bend R (curvature radius) is larger than when the fluid flow path is bent in a meandering manner. ) Is reduced, and the flow path resistance of the fluid is reduced.

  One fluid flows in from one fluid inlet 4, spirals through one fluid flow path 6, and flows out from one fluid outlet 5. Opposing this flow, the other fluid flows in from the inlet 8 of the other fluid, flows in a spiral shape through the channel tube 10 and flows out from the outlet 9 of the other fluid.

  For example, in the heat exchanger 100 shown in FIGS. 14 (A) and 14 (B), water and a refrigerant thin tube 111 are formed by the configuration in which one fluid and the other fluid are opposed to each other. Since it is not in direct contact, heat loss is generated by the amount of heat radiated to the outside of the thin tube 111, whereas in the embodiment of the present invention, water and the flow channel tube 10 are in direct contact. Thus, heat can be efficiently exchanged between the water and the refrigerant.

  Further, as shown in FIGS. 12A and 12B as a third example of the second embodiment, the box 1 has a circular shape instead of the upper plate 21 formed in a circular flat plate shape. The upper plate 21 is formed in a shallow container shape (concave) and the lower plate 22 is formed in a corresponding circular shallow container shape (concave shape). The upper plate screw portion 35 formed on the inner peripheral surface of the side of the upper plate 21 may be screwed to the formed lower plate screw portion 34.

  In this case, the upper plate 21 and the lower plate 22 are not fixed by using the plurality of screws 12 but are fixed to the lower plate screw portion 34 as compared with the configuration of the second example described with reference to FIG. Since the box 1 can be formed by screwing the screw portion 35, the assembling work can be simplified. Thus, by removing the upper plate 21, it becomes possible to expose the flow path 6 and the flow path pipe 10 of one fluid, and it becomes possible to perform cleaning and maintenance by disassembling the heat exchanger.

  This third example has a configuration in which the box 1 can be formed by screwing the upper plate screw portion 35 to the lower plate screw portion 34, but the other configurations are the same as the configuration of the second example. Therefore, avoid duplicating the explanation here. In the second embodiment, the material of the box 1 is not limited to synthetic resin.

1 box 21 upper plate
211 Insertion hole 22 Lower plate 221 Screw hole 222 O-ring groove 31, 32 Periphery 33 Support part 34 Lower plate screw part 35 Upper plate screw part 4 One fluid (water) inlet 41 Tubular body 42 Packing 43 Flare nut 5 One Fluid (water) outlet 6 Flow path of one fluid 7 Corrugated plate 71 Standing portion 72 Communication portion 73 Edge portion 8 Inlet of the other fluid (refrigerant) 9 Outlet of the other fluid (refrigerant) 91 Tubular body 92 O-ring 93 Nut 10 Channel pipe 101 Height adjustment section 102 Auxiliary bending section 103 Tubing body 104 O-ring 105 Nut 10a Both ends 10b Bending section 10c First flow path 10d Second flow path 11 O-ring 12 Screw

Claims (4)

  A thin box-shaped box comprising an upper plate and a lower plate and having an inlet and an outlet for one fluid, and a rising portion formed integrally with the box to reach the outlet from the one fluid. The one fluid channel is formed corresponding to the one fluid channel configured as described above and the other fluid channel, and communicates with an inlet and an outlet of the other fluid formed in the box. A heat exchanger comprising a flow channel pipe installed in the flow channel.   The box is formed in a thin rectangular shape, and the flow path of the one fluid has a plurality of rising portions extending from one side to the other side of the opposite side of the box, and a communication portion provided in the rising portion. The heat exchanger according to claim 1, wherein the heat exchanger is formed in a meandering shape.   2. The box according to claim 1, wherein the box is formed in a thin circular shape, and the flow path of the one fluid is formed in a spiral shape at a rising portion extending from the outer edge to the center of the box. Heat exchanger.   The flow path of the one fluid and the flow path tube are configured such that the one fluid and the other fluid flow in opposition to each other. Heat exchanger.

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