JP5263122B2 - Heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger capable of improving heat transfer performance. <P>SOLUTION: In the heat exchanger, peripheral edges 3, 3 of two opposing plates 2, 2 formed to have a recessed shape are jointed to form a thin rectangular case body. One fluid inlet 4 and outlet are formed at the peripheral edge 3 of the case body. One fluid flow passage 6 communicated with the inlet 4 and outlet is formed within the case body. Narrow tubes are jointed to both flat faces outside the casing so as to form the other fluid flow passage. The one fluid flow passage 6 is formed as a flow passage in which a plurality of meandering flow passages are arranged from one opposing lateral side parts 2a, 2a to the other lateral side parts and are sequentially communicated with each other. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a heat exchanger, and more particularly, to a structure that can improve heat transfer performance.

  As a conventional heat exchanger, as shown in FIG. 14, in a heat exchanger a that performs heat exchange between two kinds of fluids, the heat transfer area is increased to improve the thermal efficiency, and the space is reduced by downsizing. Something known to make it easier.

  That is, two kinds of drawn plates b are joined to form a thin rectangular box by joining the peripheral edges c, and openings f are formed at the left and right alternate side end positions on the wall surface e of the corrugated corrugated plate d. The corrugated plate d is housed in the box with the upper and lower folded surfaces joined to the plate b.

  A flow path h for one fluid (water) from an inlet g opened at the peripheral edge to an outlet (not shown) is formed in the box.

  A thin tube (not shown) is spirally wound on the outer surface of the box and joined to both flat surfaces of the box to form a flow path for the other fluid (refrigerant) (not shown) (for example, Patent Document 1). ).

  However, the flow path h of one fluid in the heat exchanger described above has a configuration in which a plurality of rectilinear portions that connect between opposite side portions in the box and a folded portion that connects adjacent rectilinear portions. In this straight section, the flow of one fluid is difficult to stir, and the temperature unevenness occurs in one fluid in the flow path h, so that heat transfer performance cannot be obtained sufficiently. .

JP 2003-314975 A

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a heat exchanger capable of improving heat transfer performance.

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

A thin rectangular box is formed by joining the peripheral edges of two opposing plates formed in a concave shape, and an inlet and an outlet for one fluid are formed at the peripheral edge of the box, and the inlet is formed in the box In the heat exchanger in which one fluid passage communicating with the outlet is formed, a thin tube is joined to both flat surfaces outside the box to form the other fluid passage,
A plurality of meandering channels are arranged in a direction along the one side and the other side. The meandering channels repeatedly meander from one opposite side of the box and extend to the other side. And a heat exchanger characterized by being a flow path formed so that they are in continuous communication.

  Further, the flow path member constituting the flow path is made of a corrugated plate, and a plurality of the corrugated plates having the same shape are combined to form the flow path of the one fluid.

  The corrugated plate is positioned by positioning portions formed on the upper and lower inner surfaces facing each other.

  Further, the corrugated plate is positioned by a spacer having a slit corresponding to at least one end of the corrugated plate.

  Further, the flow path member constituting the flow path is formed of a U-shaped partition plate formed by bending, and the bent portions of the partition plate are combined with each other.

  ADVANTAGE OF THE INVENTION According to this invention, the heat exchanger which can aim at the improvement of heat-transfer performance can be provided by stirring one fluid which flows through the inside of a heat exchanger by communicating several meandering flow paths, and eliminating temperature nonuniformity. .

It is a top view of the heat exchanger by this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is principal part explanatory drawing which shows the 1st Example of the heat exchanger by this invention, (A) is a disassembled perspective view of a flow-path member, (B) is a model which shows the flow path of one fluid (water) FIG. It is principal part explanatory drawing which shows the 1st Example of the heat exchanger by this invention, (A) is a disassembled perspective view of a flow-path member, (B) is an assembly perspective view of a flow-path member, (C ) Is a development view of the flow path member. It is principal part explanatory drawing which shows the 1st Example of the heat exchanger by this invention, (A) is a disassembled perspective view of a flow-path member, (B) is an assembly perspective view of a flow-path member. It is principal part explanatory drawing of the heat exchanger by this invention, (A) is a perspective view which shows the 1st example of the junction part shown to A part of FIG. 3 (B), (B) is FIG. 3 (B). It is a perspective view which shows the 2nd example of the junction part shown to A part, (C) is a perspective view which shows the 3rd example of the junction part shown to C part of FIG. 4 (B). It is principal part explanatory drawing of the heat exchanger by this invention, (A) is a perspective view of the 1st example of the butt | matching part shown to B part of FIG. 3 (B), and D part of FIG. 4 (B), (B ) Is a perspective view of a second example of the butting portion shown in part B of FIG. 3B and part D of FIG. 4B. It is a principal part disassembled perspective view which shows the 2nd Example of the heat exchanger by this invention. It is principal part explanatory drawing which shows the 2nd Example of the heat exchanger by this invention, (A) is AA sectional drawing (however, the figure which abbreviate | omitted the thin tube) shown in FIG. 1, (B) is a disassembled perspective view. FIG. It is principal part explanatory drawing which shows the 3rd Example of the heat exchanger by this invention, (A) is a perspective view of a flow-path member, (B) is an exploded perspective view, (C) is 3rd It is a perspective view which shows the other example of an Example. It is principal part explanatory drawing which shows the 4th Example of the heat exchanger by this invention, (A) is a disassembled perspective view of a flow-path member, (B) is a disassembled perspective view. It is a principal part expansion perspective view which shows the 4th Example of the heat exchanger by this invention. It is explanatory drawing which shows the 5th Example of the heat exchanger by this invention, (A) is a principal part disassembled perspective view, (B) is E arrow view shown to FIG. 11 (A), (C ) Is an F arrow view shown in FIG. It is a top view which shows the flow path of one fluid (water) by the 5th Example. It is a principal part disassembled perspective view of the heat exchanger by a prior art example.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated in detail as an Example based on an accompanying drawing.

  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 includes one fluid (water) flowing through one flow path and the other flow path. It is possible to supply hot water that has been effectively raised in temperature by improving heat transfer performance and efficiently exchanging heat with the other fluid (refrigerant) that circulates as a heat source. It is.

  As shown in FIGS. 1 to 5, the heat exchanger according to the present invention includes one plate 2 and the other plate 2 which are formed by drawing a copper plate or an aluminum plate into a shallow container shape (concave shape) and facing each other. The peripheral edges 3 and 3 are joined to form a thin rectangular box 1, and one fluid inlet 4 and one fluid outlet 5 are formed on the opposite peripheral edges 3 and 3 of the joined box 1. doing.

  In the box 1, one fluid flow path 6 is formed to connect between one fluid inlet 4 and one fluid outlet 5, and the one fluid flow path 6 is formed in the box body. 1 and a flow path member 7 composed of a plurality of members housed in the box 1.

  As shown in FIGS. 2 (A) and 2 (B), one fluid flow path 6 has a plurality of meanders extending from one side 2a facing in one direction in the box 1 to the other side 2a. The meandering flow paths 2c, 2d, 2e, 2f, 2g and 2h are formed, and the meandering flow paths 2c, 2d, 2e, 2f, 2g and 2h are sequentially communicated so that By flowing so as to meander from one side 2b facing in the direction to the other side 2b, one fluid (water) is circulated while being stirred so as not to cause temperature unevenness. Become.

  Note that the plurality of meandering channels 2c, 2d, 2e, 2f, 2g, and 2h shown in FIG. 2 (B) are arranged from one side 2a facing the one direction shown in FIG. 2 (A) to the other side 2a. A plurality of meandering channels 2c, 2d, 2e, 2f, 2g, and 2h communicating from one side 2b facing the other direction to the other side 2b. This is schematically shown.

  In the box 1, a flow path member 7 made up of a plurality of members forming one fluid flow path 6 is combined and formed in a frame shape so as to communicate with each other through communication portions 9 a and 9 b consisting of openings. The upper and lower ends 7 a and 7 b that are the ends of the frame shape are accommodated in one plate 2 and the other plate 2.

  2A and 2B, FIGS. 3A to 3C, FIGS. 4A and 4B, and FIG. 5A to FIG. 5C, FIG. 6A and FIG. 6B, FIG. 7, FIG. 8A and FIG. 8B, and FIG. 9 (C), FIG. 10 (A), FIG. 10 (B), and FIG. 11, and a plurality of corrugated plates 71 to 76 formed by corrugated copper plates or aluminum plates.

  Next, in a state in which a plurality of corrugated plates 71 to 76 are combined and formed into a frame shape, the upper and lower ends 7a and 7b serving as the end portions are joined to the plates 2 and 2 and stored in the box 1 A plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h constituting one fluid channel 6 are formed between the opposing two side portions 2a and 2a in the box 1, and The fact that the plurality of meandering channels 2c, 2d, 2e, 2f, 2g, and 2h communicate with each other between the opposite side portions 2b and 2b will be described below.

  First, as shown in FIG. 2 (A), FIGS. 3 (A) to 3 (C), and FIGS. 4 (A) and 4 (B), the flow path member 7 composed of a plurality of members is provided. The structure which consists of the corrugated plates 71 and 72 provided with the communication parts 9a and 9b which consist of openings is demonstrated.

  The corrugated plates 71 and 72 are formed of a copper plate or an aluminum plate in a shape as shown in FIG. 3C as a developed view, and are bent by bending the portions indicated by the two-dot chain line k in the same drawing. A corrugated plate 71 formed as shown in FIG. 3A and a corrugated plate 72 having the same shape and reversed in the longitudinal direction (horizontal) around a two-dot chain line i shown in FIG. Boxes that are opposed to each other and are combined in a frame shape as shown in FIG. 3B, and upper and lower ends 7a and 7b as end portions thereof are joined to one plate 2 and the other plate 2 shown in FIG. One fluid flow path 6 is formed by joining one plate 2 that is housed in 1 and the peripheral edges 3 and 3 of the other plate 2 together.

  The corrugated plates 71 and 72 combined in a frame shape are fixed in the box 1 by being sandwiched between one plate 2 and the other plate 2, but may be fixed by brazing or diffusion welding. Good. Similarly, the joining of the one plate 2 and the peripheral edges 3 and 3 of the other plate 2 may be similarly fixed by brazing or diffusion welding.

  At that time, the corrugated plates 71 and 72 combined as shown in FIG. 3 (B) are arranged near the inlet 4 of one fluid shown in FIG. 2 (A). The corrugated plates 72 adjacent to the corrugated plates 71 and 72 disposed near the fluid inlet 4 shown in FIG. 2 (A) are arranged around the two-dot chain line j shown in FIG. 3 (B). Is inverted in the short direction (vertical).

  Note that the upper and lower ends 7a and 7b which are the end portions of the combined corrugated plates 71 and 72 are arranged in a short direction (vertical) with the combined corrugated plates 71 and 72 centered on the two-dot chain line j shown in FIG. 3B and 4B, the upper and lower positions are inverted such that the upper end 7a shown in FIGS. 3B and 4B becomes the lower end 7b and the lower end 7b becomes the upper end 7a.

  As a result, the corrugated plate 71 having the same shape is inverted in the longitudinal direction (horizontal) to form the corrugated plate 72, combined with the corrugated plate 71 in a frame shape, and the combined corrugated plates 71 and 72 are inverted in the short direction (vertical). Thus, by forming a plurality of flow path members 7 and storing them in the box 1, the flow path 6 of one fluid can be configured, and there is one type of mold for manufacturing the corrugated plates 71 and 72. This is advantageous in terms of cost.

  As such a configuration, FIGS. 4A and 4B, FIG. 6, FIGS. 7A and 7B, and FIGS. 8A to 8C. The same applies to corrugated plates 73 and 74 and 75 and 76 shown in FIGS. 9A and 9B and FIG. 10, but the explanation based on the developed view and the developed view is omitted for these. To do.

  Further, the combined corrugated plates 71 and 72 include a plurality of meandering channels 2c, 2d, 2e, 2f, 2g and a wall surface 8 between the opposite side portions 2a and 2a of the box 1 A communication portion 9b having an opening is provided so as to form 2h, and a plurality of meandering flow paths 2c, 2d, 2e, 2f, 2g, and 2h are communicated between the other opposite side portions 2b and 2b. A communication portion 9a made of an opening is provided so as to make it happen.

  That is, as shown in FIGS. 2 (A) and 2 (B), one fluid flowing in from the inlet 4 flows from one communicating portion 9a formed of an opening provided in the corrugated plate 71 to one fluid flow path 6. Flowing into the meandering flow path 2c forming the flow path, and flowing through the communication portion 9b provided to meander from the one side 2a of the box 1 toward the other side 2a, and the corrugated plate 71 from the communicating portion 9a provided in the corrugated plate 72 combined with 71 to the communicating portion 9a formed of an opening provided so as to communicate with the corrugated plate 72 disposed adjacent to the corrugated plate 72. Then, while meandering, the plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h are circulated toward the outlet 5.

  In other words, the flow path 6 of one fluid has a plurality of meandering flow paths 2c, 2d, 2e, 2f, between the two side portions 2a and 2a of the box 1 made up of one plate 2 and the other plate 2. 2g and 2h, and these are formed by communicating with a communicating portion 9a comprising an opening, and are formed by meandering channels between the other side portions 2b and 2b.

  Thereby, one fluid (water) flowing in from the inlet 4 is meandered between one side 2a and 2a of the box 1 and between the other side 2b and 2b. While flowing in the fluid flow path 6, the fluid is stirred in one of the fluid flow paths 6 to eliminate temperature unevenness. Therefore, compared with the case where the fluid is not stirred, the other fluid (refrigerant) described later is used. Heat transfer performance can be improved.

  As shown in FIG. 1, a box 1 formed by joining one plate 2 and the other plate 2 has a refrigerant thin tube 10 made of a copper tube or an aluminum tube wound spirally on both flat surfaces. The other fluid (refrigerant) flow path 11 is formed. Here, the refrigerant flows from the inlet 11a of the thin tube 10 toward the outlet 11b.

  The narrow tube 10 that forms the flow path 11 of the other fluid (refrigerant) wound around the box 1 may be configured to be fixed to the box 1 without a gap by brazing or diffusion welding. The heat transfer performance with one fluid (water) formed in the box 1 can be improved.

  As shown in FIGS. 3 (A) to 3 (C) and FIGS. 4 (A) and 4 (B), the plurality of corrugated plates 71 and 72 are provided in the corrugated plate 71 as the first embodiment. By joining the plurality of joints 17 composed of the convex portions 17a and concave portions 17b and the concave portions 17b and convex portions 17a provided in the corrugated plate 72 to each other, and simultaneously, the locking claws 18a provided in the corrugated plate 71 and A plurality of butting portions 18 including the locking groove 18b, the locking groove 18b provided with the corrugated plate 72, and the locking claw 18a are combined with each other.

  As shown in FIG. 5 (A), the plurality of joint portions 17 are formed such that the convex portions 17a and the concave portions 17b are substantially rectangular, and the corrugated plates 71 and 72 are engaged with each other. Accordingly, the plurality of corrugated plates 71 and 72 can be accommodated in the box 1 composed of one plate 2 and the other plate 2 by easily joining and combining the joining portions 17.

  Alternatively, the plurality of joint portions 17 include the convex portions 17a provided in the corrugated plates 71 and 72 so that the corrugated plates 71 and 72 cannot be detached in the inflow direction of one fluid flowing in from the inlet 4 illustrated in FIG. Both the concave portions 17b provided in the corrugated plates 72 and 71 may be formed in a substantially trapezoidal shape as shown in FIG. 5B, or, as shown in FIG. Both the convex portion 17a provided in 72 and the concave portion 17b provided in the corrugated plates 72 and 71 may be formed in a substantially circular shape.

  Thus, when the plurality of corrugated plates 71 and 72 are joined and combined with the joint portion 17, when the upper and lower ends 7 a and 7 b serving as the end portions are joined to the one plate 2 and the other plate 2, Since the joint portion 17 does not come off, it is easy to handle in a combined state, and workability when stored in the box 1 is improved.

  As shown in FIG. 6 (A), the plurality of abutting portions 18 are provided with corrugated plates 72 and 71 corresponding to the engaging claws 18a formed on the upper and lower ends of the corrugated plates 71 and 72, respectively. It is comprised so that it may latch on the latching groove 18b formed in the upper and lower parts.

  At that time, the locking claws 18a provided at the upper and lower ends of the corrugated plates 71 and 72 are opposed to each other at a position inserted between the upper and lower locking claws 18a to the locking groove 18b to a predetermined depth. A positioning portion 18c that is positioned in contact with the contact surfaces of the corrugated plates 72 and 71 is provided.

  As a result, the plurality of corrugated plates 71 and 72 are joined in a state of being butted by the butting portion 18, and the corrugated plates 71 and 72 joined and combined at the butting portion 18 and the joining portion 17 are firmly The combination makes it easy to handle and allows the upper and lower ends 7a and 7b to be housed in the box 1 composed of one plate 2 and the other plate 2.

  In the form of one fluid passage 6 for carrying out the present invention, a plurality of meandering passages 2c, 2d, 2e, 2f, 2g between one side portions 2a and 2a of the box 1 are used. And 2h and a meandering flow path between the other side portions 2b and 2b, which are formed by communicating with each other through a communication portion 9a comprising an opening. Therefore, the heat transfer performance with the other fluid (refrigerant) flowing through the flow path 11 of the other fluid can be improved as compared with the case where the fluid is not stirred.

  Further, as shown in FIG. 6B, the locking claws 18a formed at the lower ends of the corrugated plates 71 and 72 are locked in the locking grooves 18b formed corresponding to the locking claws 18a. You may comprise as follows.

  At that time, the locking claws 18a provided at the tips of the corrugated plates 71 and 72 are opposed to each other at a position where the locking grooves 18b are inserted to a predetermined depth as shown in FIG. 6B as a second example. A positioning portion 18c that is positioned in contact with the contact surfaces of the corrugated plates 71 and 72 is provided.

  This makes it possible to simplify the configuration by not forming the locking claws 18a at the upper ends of the corrugated plates 71 and 72, and aligns one (upper) locking claw 18a with the locking groove 18b at the time of joining. Therefore, workability when locking is improved.

  Next, based on FIG. 7 shown as the second embodiment, and FIGS. 8A and 8B, the corrugated plate having a simplified shape (lower cost) compared to the corrugated plates 71 and 72. A configuration in which 73 and 74 can be accurately positioned and joined to one plate 2 and the other plate 2 will be described.

  One plate 2 and the other plate 2 have a configuration in which a positioning groove 12 having a concave cross section is provided on the inner surface side facing up and down corresponding to the upper and lower ends 7a and 7b forming the ends of the plurality of corrugated plates 73 and 74. I have to.

  As shown in FIG. 7, the lower end 7 b of the corrugated plates 73 and 74 is positioned by the positioning groove 12 of the other plate 2, and the upper ends 7 a of the corrugated plates 73 and 74 are positioned in the positioning groove 12 of the one plate 2. Thus, the upper and lower ends 7a and 7b forming the ends of the plurality of corrugated plates 73 and 74 shown in FIG. 8 (B) are shown in FIG. 8 (A) as a cross-sectional view taken along the line AA in FIG. As shown to A), it is set as the structure which is positioned by the positioning groove | channel 12 formed in one plate 2 and the other plate 2, and is hold | maintained correctly.

  As shown in FIG. 7, the corrugated plate 74 is obtained by inverting the corrugated plate 73 in the longitudinal direction (horizontal), and the corrugated plate 73 ′ is obtained by inverting the corrugated plate 73 in the short direction (vertical). The corrugated plate 74 ′ is obtained by inverting the corrugated plate 74 in the short direction (vertical). The corrugated plate 73 and the corrugated plate 73 ′, and the corrugated plate 74 and the corrugated plate 74 ′ are In either case, the same member (corrugated plate) is commonly used. Moreover, it positions by the positioning groove 12 provided in the inner surface side which the one plate 2 and the other plate 2 oppose.

  At this time, the corrugated plate 73 and the corrugated plate 74, and the corrugated plate 73 ′ and the corrugated plate 74 ′ are positioned at positions separated from each other as shown in FIG. Thus, a plurality of meandering channels 2c, 2d, 2e, 2f, 2g, and 2h shown in FIG. 2B are formed between the one side portions 2a and 2a of the box 1. Further, as shown in FIG. 2 (B), the plurality of meandering channels 2c, 2d, 2e, 2f, 2g, and 2h are provided between the other side portions 2b and 2b by the communication portion 9d including a plurality of gaps. Are communicated from the inlet 4 side toward the outlet 5 side.

  In this case, the flow path member 7 having the joint portion 17 shown in FIG. 8B is joined like the corrugated plate 73 and the corrugated plate 73 ′ shown in FIG. 7, and consists of one plate 2 and the other plate 2. A plurality of meandering flow paths 2c, 2d, 2e, 2f, 2g constituting one fluid flow path 6 between one side portions 2a and 2a of the box 1 by being housed in the box 1 And a communication portion 9c including a plurality of gaps for communicating a plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h. The part 9d can be secured.

  Thus, a plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h constituting one fluid channel 6 are formed between the one side portions 2a and 2a of the box body 1, and Since the plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h are communicated between the other side portions 2b and 2b, one fluid (water) is stirred in the channel 6 Since there is no temperature unevenness, the heat transfer performance between the other fluid (refrigerant) in the flow path 11 of the other fluid can be improved as compared with the case where the fluid is not stirred.

  Next, based on FIGS. 9 (A) to 9 (C) shown as the third embodiment, corrugated plates 75 and 76 with simplified shapes (lower costs) compared to the corrugated plates 73 and 74, A configuration that can be joined to one plate 2 and the other plate 2 will be described.

  The corrugated plates 73 and 74 shown in FIGS. 7 and 8B have the joint 17, whereas the corrugated plates 75 and 76 shown in FIGS. 9A to 9C are the joint 17. Is a simplified configuration (reduced cost), and due to the difference in configuration, the left and right sides of the plurality of corrugated plates 75 and 76, one plate 2 forming the box 1 and the other plate 2 The one side portions 2a and a part of 2a facing each other constitute one fluid flow path 6.

  Similarly to the second embodiment described above, the one plate 2 and the other plate 2 correspond to the upper and lower ends 7a and 7b forming the ends of the corrugated plates 75 and 76, and are on the inner surface side facing up and down. In this configuration, a positioning groove 12 having a concave cross section is provided.

  Further, a plurality of corrugated plates 75 and 76 are placed on the other plate 2 as shown in FIG. 9 (B), and upper and lower ends forming the ends of the plurality of corrugated plates 75 and 76 shown in FIG. 9 (A). As shown in FIG. 8A, 7a and 7b are configured so as to be accurately positioned by positioning grooves 12 provided on the inner surfaces of one plate 2 and the other plate 2 facing each other.

  Alternatively, the upper and lower ends 7a and 7b forming the ends of the plurality of corrugated plates 75 and 76 are positioned by the positioning groove 12, and as shown in FIG. 9C, the leading ends of the corrugated plates 75 and 76 You may comprise so that it may position more firmly by positioning by the some protrusion part 13 protrudingly provided corresponding to the part.

  Moreover, although the some protrusion part 13 shown to FIG. 9 (C) is the structure which hold | maintains the lower end position of the front-end | tip part of the corrugated plates 75 and 76 by protrudingly providing in the other plate 2, this structure Without being limited thereto, the upper and lower end positions of the front end portions of the corrugated plates 75 and 76 may be accurately positioned by protruding from one plate 2 and the other plate 2.

  The corrugated plate 76 shown in FIG. 9B is obtained by inverting the corrugated plate 75 in the longitudinal direction (horizontal), and the corrugated plate 75 ′ is obtained by inverting the corrugated plate 75 in the short direction (vertical). The corrugated plate 76 'is obtained by inverting the corrugated plate 76 in the short direction (vertical). The corrugated plate 75 and the corrugated plate 75' are the same as the corrugated plate 76 and the corrugated plate 76 '. A member (corrugated plate) is commonly used. Moreover, it is positioned by the positioning groove | channel 12 provided in the inner surface side which one plate 2 and the other plate 2 oppose by the structure used in common. Furthermore, the structure positioned by the some protrusion part 13 may be sufficient.

  At that time, the corrugated plate 75 and the corrugated plate 76, and the corrugated plate 75 ′ and the corrugated plate 76 ′ are positioned at positions separated from each other as shown in FIG. A plurality of meandering channels 2c, 2d, 2e, 2f, 2g, and 2h shown in FIG. 2B are formed between the two side portions 2a and 2a of the box 1 by the communication portion 9c. Become. Further, as shown in FIG. 2 (B), the plurality of meandering channels 2c, 2d, 2e, 2f, 2g, and 2h are provided between the other side portions 2b and 2b by the communication portion 9d including a plurality of gaps. Are communicated from the inlet 4 side toward the outlet 5 side.

  In this case, the flow path member 7 shown in FIG. 9A is joined as shown in FIG. 9B to the corrugated plate 75 and the corrugated plate 75 ′ and the corrugated plate 76 and the corrugated plate 76 ′. A plurality of meandering flows constituting one fluid flow path 6 between one side portions 2a and 2a of the box 1 by being housed in the box 1 made up of the plate 2 and the other plate 2 It is possible to secure a communication portion 9c composed of a plurality of gaps for forming the paths 2c, 2d, 2e, 2f, 2g and 2h, and a plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h. In addition, it is possible to secure a communication portion 9d including a plurality of gaps for communicating between the other side portions 2b and 2b.

  Thus, a plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h constituting one fluid channel 6 are formed between the one side portions 2a and 2a of the box body 1, and Since the plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h are communicated between the other side portions 2b and 2b, one fluid (water) is stirred in the channel 6 Since there is no temperature unevenness, the heat transfer performance between the other fluid (refrigerant) in the flow path 11 of the other fluid can be improved as compared with the case where the fluid is not stirred.

  Next, based on FIG. 10 (A) and FIG. 10 (B) shown as the fourth embodiment, and FIG. 11, the corrugated plates 75 and 76 are positioned by the spacer 15 provided with the slit 14 and one of the corrugated plates 75 and 76 is positioned. A configuration that can be joined to the plate 2 and the other plate 2 will be described.

  On the upper surface of the other plate 2, as shown in FIGS. 10A and 10B, a plurality of corrugated plates 75 and 76 having the same shape corresponding to the lower ends 7 b of the plurality of corrugated plates 75 and 76. A spacer 15 having a side wall 16 having the same height as the corrugated plates 75 and 76 is provided.

  A plurality of spacers 15 holding a plurality of corrugated plates 75 and 76 are provided on the upper surface of the other plate 2, and one plate 2 is joined to the upper ends 7a of the plurality of held corrugated plates 75 and 76, and By joining the upper and lower peripheral edges 3, a plurality of corrugated plates 75 and 76 are accommodated in a thin rectangular box 1 made up of one drawn plate 2 and the other plate 2.

  The corrugated plate 76 shown in FIGS. 10B and 11 is obtained by inverting the corrugated plate 75 in the longitudinal direction (horizontal), and the corrugated plate 75 ′ has the corrugated plate 75 in the short direction (vertical). The corrugated plate 76 ′ is obtained by inverting the corrugated plate 76 in the short direction (vertical). The corrugated plate 75 and the corrugated plate 75 ′, and the corrugated plate 76 and the corrugated plate 76 ′. The same member (corrugated plate) is commonly used.

  Further, the same member (corrugated plate) is positioned by the slits 14 provided in the plurality of spacers 15, and by positioning, the lower ends 7 b of the plurality of corrugated plates 75, 75 ′, 76, and 76 ′ are slit. 14 is inserted into contact with the upper surface of the other plate 2.

  At that time, the corrugated plate 75 and the corrugated plate 76, and the corrugated plate 75 ′ and the corrugated plate 76 ′ are positioned at positions separated from each other as shown in FIG. A plurality of meandering channels 2c, 2d, 2e, 2f, 2g, and 2h shown in FIG. 2B are formed between the two side portions 2a and 2a of the box 1 by the communication portion 9c. Become. Further, as shown in FIG. 2 (B), the plurality of meandering channels 2c, 2d, 2e, 2f, 2g, and 2h are provided between the other side portions 2b and 2b by the communication portion 9d including a plurality of gaps. Are communicated from the inlet 4 side toward the outlet 5 side.

  In this case, the flow path member 7 shown in FIG. 10 (A) is joined as shown in FIG. 10 (B) to the corrugated plate 75 and the corrugated plate 75 ′, and the corrugated plate 76 and the corrugated plate 76 ′. A plurality of meandering flows constituting one fluid flow path 6 between one side portions 2a and 2a of the box 1 by being housed in the box 1 made up of the plate 2 and the other plate 2 It is possible to secure a communication portion 9c composed of a plurality of gaps for forming the paths 2c, 2d, 2e, 2f, 2g and 2h, and a plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h. It is possible to secure a communication portion 9d including a plurality of gaps for communication.

  The one fluid flow path 6 includes one plate 2 and the other plate 2, a corrugated plate 75 and a corrugated plate 76, a corrugated plate 75 ′ and a corrugated plate 76 ′, and these corrugated plates 75, 76, 75. A plurality of spacers 15 having side walls 16 having the same height as 'and 76' are formed, and the side walls 16 of the spacers 15 constitute a part of one fluid flow path 6.

  The side wall 16 of the spacer 15 forms a part of one fluid flow path 6, and when the plurality of spacers 15 are juxtaposed on the upper surface (inner surface) of the other plate 2, It has a role to improve workability when juxtaposing by placing fingers.

  Although not illustrated, the side wall 16 may be deleted to simplify the shape of the spacer 15 so as to reduce cost and weight. In this case, FIGS. 9A to 9 ( In the same manner as described above based on C), a part of the flow path 6 of one fluid is placed on the left and right of the one plate 2 and the other plate 2 constituting the box 1 instead of the side wall 16 of the spacer 15. You may make it comprise by a part of one side part 2a and 2a which opposes, and a part of the other side part 2b and 2b which opposes the front and back.

  Thus, a plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h constituting one fluid channel 6 are formed between the one side portions 2a and 2a of the box body 1, and Since the plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h are communicated between the other side portions 2b and 2b, one fluid (water) is stirred in the channel 6 Since there is no temperature unevenness, the heat transfer performance between the other fluid (refrigerant) in the flow path 11 of the other fluid can be improved as compared with the case where the fluid is not stirred.

  Next, as a fifth embodiment, the flow path member 7 is composed of a first partition plate 19 and a second partition plate 20 made of sheet metal and having a bottom surface (one surface) opened and bent into a bowl shape. When the bent portions of the first partition plate 19 and the second partition plate 20 are combined and housed in the box 1, one fluid flow path 6 passes from the water inlet 4. A configuration in which meandering is formed in the front-rear and left-right directions with respect to the inflow direction of the one fluid that has flowed in will be described below.

  As shown in FIGS. 12 (A) to 12 (C) and FIG. 13, the first partition plate 19 and the second partition plate 20 are convex portions 191 formed at a substantially central portion in the longitudinal direction. And the bent portions composed of the concave portions 201 are combined by inserting the convex portions 191 into the concave portions 201, and the upper and lower ends thereof are joined to the one plate 2 and the other plate 2, and the one plate 2 and the other plate By being housed in a box 1 made of two, a flow path 6 for one fluid is formed.

  The first partition plate 19 and the second partition plate 20 made of sheet metal formed in a bowl shape by releasing the bottom surface (one surface) have a U-shaped cross section with the upper folded surface (mountain surface) being flat. A box formed by alternately combining outer shapes (vertical × horizontal × height), as shown in FIGS. 12 (A) and 13, in which one plate 2 and the peripheral edges 3 and 3 of the other plate 2 are joined. It fits the inside dimensions of body 1.

  As shown in FIGS. 12 (A) to 12 (C) and FIG. 13, the first partition plate 19 and the second partition plate 20 are arranged between one side portions 2 a and 2 a of the box 1. In FIG. 5, the plurality of meandering channels 2c, 2d, 2e, 2f, 2g, and 2h are provided with a bent portion including a concave portion 201 and a convex portion 191, and the side wall surface has a plurality of meandering channels 2c. , 2d, 2e, 2f, 2g and 2h are formed as communication portions 19a and 20a each having an opening for communicating between the other side portions 2b and 2b.

  Moreover, after combining the 1st partition plate 19 and the 2nd partition plate 20 so that the bending parts which consist of the recessed part 201 and the convex part 191 may be inserted, the upper and lower ends are set as one plate 2 and the other plate. 2 and is housed in a box 1 formed by joining the one plate 2 and the peripheral edges 3 and 3 of the other plate 2, and the box 1 has a refrigerant thin tube as shown in FIG. 10 is wound spirally.

  As shown in FIG. 1, a refrigerant thin tube 10 made of a copper tube or an aluminum tube is spirally wound and joined to both flat surfaces in a box 1 made of one plate 2 and the other plate 2. The other fluid channel 11 is formed so as to connect the inlet 11a and the outlet 11b of the narrow tube 10 in a spiral manner.

  The flow path 6 of one fluid is formed by the box body 1 and the first partition plate 19 and the second partition plate 20 housed in the box body 1, so that FIGS. As shown in FIG. 13C and FIG. 13, water, which is one fluid that flows in from the water inlet 4, flows into the second opening 20 a of the second partition plate 20 adjacent to the inlet 4 and enters the second. The first partition plate 19 flows into the first partition plate 19 from the other opening 20a and flows through the first partition plate 19, and then the other opening 19a. From one opening 20a of the second partition plate 20 that communicates with the second partition plate 20, and flows through the second partition plate 20, and one of the first partition plates 19 that communicate with the other opening 20a. The water flows into the opening 19a of the water and flows in the direction toward the water outlet 5 sequentially while flowing through the first partition plate 19. It will be.

  Thus, a plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h constituting one fluid channel 6 are formed between the one side portions 2a and 2a of the box body 1, and Since the plurality of meandering channels 2c, 2d, 2e, 2f, 2g and 2h are communicated between the other side portions 2b and 2b, one fluid (water) is stirred in the channel 6 Since there is no temperature unevenness, the heat transfer performance between the other fluid (refrigerant) in the flow path 11 of the other fluid can be improved as compared with the case where the fluid is not stirred.

  Further, in this case, the first partition plate 19 and the second partition plate 20 can be easily combined, and can be joined to the box 1 made up of one plate 2 and the other plate 2 or inside the box 1 Can be stored easily and accurately.

  As described above, according to the configuration of the present invention, water that is one fluid that flows in from the water inlet 4 and flows through the one fluid flow path 6 toward the water outlet 5, and the refrigerant inlet 11a, a heat exchanger that efficiently exchanges heat with the refrigerant as a heat source that flows through the other fluid flow path 11 and travels toward the refrigerant outlet 11b, and improves heat transfer performance. As the heat exchange performance is improved, the heat exchanger can be reduced in size.

1 box 2 plate (one plate, the other plate)
2a One side 2b The other side 2c, 2d, 2e, 2f, 2g, 2h A plurality of meandering channels 3 Periphery 4 Water inlet 5 Water outlet 6 One fluid channel 7 Channel member 71, 72, 73, 74, 73 ′, 74 ′, 75, 76, 75 ′, 76 ′ Corrugated plate 7a Upper end 7b of flow path member 8 Lower end of flow path member 8 Wall surface 9a of flow path member 9b From communication portion 9b opening Communication part 9c Communication part 9c Communication part 9d Communication part 10 Gap 10 Narrow tube 11 Fluid flow path 11a Refrigerant inlet 11b Refrigerant outlet 12 Positioning groove 13 Projection part 14 Slit 15 Spacer 16 Side wall 17 Joint part 17a Protrusion part 17b Concave portion 18 Butting portion 18a Locking claw 18b Locking groove 18c Positioning portion 19 First partition plate 191 Convex portion 19a Communication portion 20 having an opening 20 Second partition plate 20a Communicating part consisting of opening 201 Recessed part

Claims (5)

A thin rectangular box is formed by joining the peripheral edges of two opposing plates formed in a concave shape, and an inlet and an outlet for one fluid are formed at the peripheral edge of the box, and the inlet is formed in the box In the heat exchanger in which one fluid passage communicating with the outlet is formed, a thin tube is joined to both flat surfaces outside the box to form the other fluid passage,
A plurality of meandering channels are arranged in a direction along the one side and the other side. The meandering channels repeatedly meander from one opposite side of the box and extend to the other side. And a heat exchanger characterized by being a flow path formed so that they are in continuous communication.
  2. The heat exchanger according to claim 1, wherein the flow path member constituting the flow path is formed of a corrugated plate, and the flow path of the one fluid is formed by combining a plurality of corrugated plates having the same shape.   The heat exchanger according to claim 2, wherein the corrugated plate is positioned by positioning portions formed on upper and lower inner surfaces facing the plate.   The heat exchanger according to claim 2, wherein the corrugated plate is positioned by a spacer having a slit corresponding to at least one end of the corrugated plate.   2. The heat exchange according to claim 1, wherein the flow path member constituting the flow path is formed by a folded U-shaped partition plate, and the folded portions of the partition plate are combined. vessel.

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