Ice-making heat exchanger and method for manufacturing the ice-making heat exchanger

Abstract

To realize an easy-to-manufacture heat exchanger for ice making.SOLUTION: A heat exchanger for ice making comprises: a first partition member having a bottom surface along a first direction in which a first open hole extending in the first direction is formed, and a plurality of first partition walls along the first direction that rise from the bottom surface; a plurality of second partition members which are located on both sides in the first direction with respect to the first partition member, and have a second partition wall crossing the bottom surface of the first partition member and the first partition wall, and in which a second open hole penetrating in the first direction is formed; and a pipe which extends in the first direction, and is continuously passed through the first open hole of the first partition member and the second open hole of the second partition member.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to an ice-making heat exchanger and a method for manufacturing the ice-making heat exchanger.

Background Art

[0002] As a conventional technique, Patent Document 1 discloses an ice-making chamber having an ice-making machine base provided with cooling pipes and a partition member in which partition plates are assembled in a lattice pattern. In this ice-making chamber, the ice-making machine base and the partition member are brazed by melting a brazing material sandwiched between the ice-making machine base and the partition member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An ice-making heat exchanger including a substrate having a refrigerant flow path through which a refrigerant flows is manufactured, for example, as follows. First, a substrate is produced by brazing a press plate having a refrigerant flow path formed by press working and a flat base plate, and then a partition member is brazed to the substrate. In this case, a press working step and a brazing step are required to manufacture the ice-making heat exchanger, and the manufacturing process of the ice-making heat exchanger tends to be complicated. An object of the present invention is to realize an ice-making heat exchanger that is easy to manufacture.

Means for Solving the Problems

[0005] For this purpose, the ice-making heat exchanger to which the present invention is applied has a first through hole extending in a first direction, a bottom surface along the first direction, and a first partition wall that extends along the first direction and rises from the bottom surface. three or more arranged in a second direction intersecting the first direction and has a first partition wall and a plurality of spaces surrounded by the bottom surface and the first partition wall are formed in the second directionA first partition member, disposed on both sides of the first partition member in the first direction, intersecting the bottom surface and the first partition wall of the first partition member along the second direction a plurality of second partition members having second partition walls and formed with second through holes penetrating in the first direction, and a pipe extending in the first direction and continuously passed through the first through hole of the first partition member and the second through hole of the second partition member. The ice-making heat exchanger is provided Here, the first partition member and the second partition member can be characterized in that movement in the first direction is restricted by contact between the outer peripheral surface of the pipe and the inner peripheral surfaces of the first through hole and the second through hole Further, a coating having corrosion resistance can be formed on the surfaces of the first partition member and / or the second partition member Further, the second partition member can be characterized in that a brazing material is formed on a surface adjacent to the first partition member Further, a plurality of the first partition members are provided, and the plurality of the first partition members are obtained by cutting one member extruded in the first direction into a plurality of pieces by a plane intersecting the first direction Further, the pipe can be characterized in that irregularities are formed on the inner peripheral surface From another point of view, a method for manufacturing an ice-making heat exchanger to which the present invention is applied includes, by extrusion, a through hole extending in the extrusion direction, an extending surface along the extrusion direction, and rising from the extending surface along the extrusion direction three or more arranged in an intersecting direction intersecting the extrusion direction forming an extruded member having a rising surface, and cutting the extruded member by a plane intersecting the extrusion direction along the intersecting direction so that the through hole is cut to form a first through hole extending in the extrusion direction, the extending surface is cut to form a bottom surface, and the rising surface is cut to form three or more a first partition wall having, and a plurality of spaces surrounded by the bottom surface and the first partition wall are formed in the intersecting directionA method for manufacturing an ice-making heat exchanger is provided, which includes fabricating a plurality of formed first partition members, disposing a plate-shaped second partition member having a second partition wall along the intersection surface and formed with a second through hole penetrating in the extrusion direction between the plurality of first partition members arranged in the extrusion direction, and inserting a pipe extending in the extrusion direction into the first through hole of the first partition member and the second through hole of the second partition member. Here, after passing the pipe through the first through hole of the first partition member and the second through hole of the second partition member, a coating can be formed by applying a corrosion-resistant paint or performing a plating treatment on the surfaces of the first partition member and the second partition member.

Advantages of the Invention

[0006] According to the present invention, an ice-making heat exchanger that is easy to manufacture can be realized.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0008] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIGS. 1 and 2 are perspective views of an ice-making heat exchanger 1 to which the present embodiment is applied. FIG. 2 corresponds to a view obtained by rotating the ice-making heat exchanger 1 of FIG. 1 by 180 degrees about the Z axis. FIG. 3 is an exploded view of the components constituting the ice-making heat exchanger 1. FIG. 4 is a cross-sectional view of the ice-making heat exchanger 1 shown in FIG. 1 cut along a plane (YZ plane) extending downward from the IV-IV portion. FIG. 5 is a cross-sectional view of the ice-making heat exchanger 1 shown in FIG. 4 cut at the V-V portion. In the following description, the Z direction, which is the vertical direction in each figure, may be referred to as the vertical direction of the ice-making heat exchanger 1 or simply the vertical direction.

[0009] (Ice-making heat exchanger 1) The ice-making heat exchanger 1 has a plurality (16 in this example) of ice-making spaces S partitioned in a grid pattern, and is used to exchange heat between the water introduced into the ice-making space S and the refrigerant flowing through a refrigerant flow path 4 described later, thereby freezing (making ice) the water in the ice-making space S. The ice-making heat exchanger 1 includes a plurality (4 in this example) of first partition members 2 that form the ice-making space S. The ice-making heat exchanger 1 also includes a plurality (5 in this example) of second partition members 3 that form the ice-making space S together with the first partition members 2. Furthermore, the ice-making heat exchanger 1 includes a refrigerant flow path 4 through which a refrigerant for cooling the water introduced into the ice-making space S flows.

[0010] As shown in FIGS. 1 and 2, in the ice-making heat exchanger 1 of the present embodiment, the plurality of first partition members 2 and the plurality of second partition members 3 are arranged alternately side by side. Additionally, in this example, the first partition members 2 are respectively arranged between the second partition members 3 arranged in a predetermined direction. In the following description, the direction in which the first partition members 2 and the second partition members 3 are arranged in the ice-making heat exchanger 1 may be referred to as the X direction. And in the ice-making heat exchanger 1, a plurality of ice-making spaces S are formed, which are surrounded by a first partition wall 21 and a bottom surface 22, which will be described later, of the first partition member 2, and a second partition wall 31, which will be described later, of the second partition member 3. In the ice-making heat exchanger 1 shown in FIG. 1, a total of 16 ice-making spaces S, each having a rectangular parallelepiped shape, are formed in 4 rows in the X direction and 4 rows in the Y direction orthogonal to the X direction. In the present embodiment, the X direction corresponds to the first direction, and the Y direction corresponds to the second direction.

[0011] (First partition member 2) The first partition member 2 has a block shape that is long in the Y direction. The first partition member 2 includes a bottom surface 22 along the X and Y directions, and a plurality (five in this example) of first partition walls 21 that each extend along the X direction and rise from the bottom surface 22 in the Z direction (upward). Additionally, the first partition wall 21 has a plate shape along the X and Z directions and is arranged at equal intervals in the Y direction on the bottom surface 22. In this example, the interval between adjacent first partition walls 21 is substantially equal to the width of the bottom surface 22 in the X direction.

[0012] Further, the first partition member 2 has a rectangular parallelepiped shape that is continuous below the bottom surface 22, supports the refrigerant flow path 4, and includes a first cooling portion 23 that is cooled by the refrigerant passing through the refrigerant flow path 4. Furthermore, a plurality of first through holes 25 that penetrate the first cooling portion 23 in the X direction are formed in the first partition member 2. The plurality of first through holes 25 are arranged at equal intervals in the Y direction in the first cooling portion 23. More specifically, each first through hole 25 is provided at a position corresponding to the space between adjacent first partition walls 21 in the first cooling portion 23. Additionally, each first through hole 25 is formed so as to face each ice-making space S of the ice-making heat exchanger 1.

[0013] The inner diameter of the first through hole 25 is formed to be substantially equal to the outer diameter of a hairpin pipe 41 (straight pipe portion 4a) of the refrigerant flow path 4, which will be described later. And in a state where the hairpin pipe 41 is inserted into the first through hole 25, the inner peripheral surface of the first through hole 25 and the outer peripheral surface of the straight pipe portion 4a of the hairpin pipe 41 are in contact with each other. Thereby, in the ice-making heat exchanger 1, the movement of the first partition member 2 in the X direction with respect to the refrigerant flow path 4 is restricted.

[0014] Details will be described later, but the first partition member 2 is obtained by extrusion processing with the X direction as the extrusion direction. The material of the first partition member 2 is not particularly limited as long as it is a metal that can be extruded. For example, aluminum or an aluminum alloy can be used.

[0015] (Second partition member 3) The second partition member 3 has a plate-like shape along the Y direction and the Z direction. In the present embodiment, the thickness of the second partition member 3 is smaller than the thickness of the first partition wall 21 of the first partition member 2. The second partition member 3 intersects the first partition wall 21 and the bottom surface 22 of the first partition member 2, and includes a second partition wall 31 that surrounds the ice-making space S together with the first partition wall 21 and the bottom surface 22. Incidentally, when the ice-making heat exchanger 1 of the present embodiment is viewed from above, the first partition wall 21 of the first partition member 2 and the second partition wall 31 of the second partition member 3 are arranged in a lattice pattern.

[0016] Further, the second partition member 3 includes a second cooling portion 33 that extends downward from the second partition wall 31, supports the refrigerant flow path 4, and is cooled by the refrigerant passing through the refrigerant flow path 4. Furthermore, a plurality of second through holes 35 penetrating the second cooling portion 33 in the X direction are formed in the second partition member 3. The plurality of second through-holes 35 are arranged at equal intervals in the Y direction in the second cooling section 33. The intervals between the plurality of second through-holes 35 are equal to the intervals between the plurality of first through-holes 25 formed in the first partition member 2. Additionally, in this embodiment, the first through-holes 25 of the first partition member 2 and the second through-holes 35 of the second partition member 3 are at the same position in the Y direction in the ice-making heat exchanger 1. As a result, in the ice-making heat exchanger 1, each of the first through-holes 25 of the first partition member 2 and each of the second through-holes 35 of the second partition member 3 are continuous in the X direction.

[0017] The inner diameter of the second through-hole 35 is formed to be substantially equal to the inner diameter of the first through-hole 25 of the first partition member 2. Also, the inner diameter of the second through-hole 35 is formed to be substantially equal to the outer diameter of the hairpin pipe 41 (straight pipe portion 4a) of the refrigerant flow path 4 described later. And in the state where the hairpin pipe 41 is inserted into the second through-hole 35, the inner peripheral surface of the second through-hole 35 and the outer peripheral surface of the straight pipe portion 4a of the hairpin pipe 41 are in contact. Thereby, in the ice-making heat exchanger 1, the movement of the second partition member 3 in the X direction with respect to the refrigerant flow path 4 is restricted.

[0018] The second partition member 3 is made of, for example, sheet metal formed by press working. The material of the second partition member 3 is not particularly limited, but for example, stainless steel can be used.

[0019] (Refrigerant flow path 4) The refrigerant flow path 4 is continuously passed through the first through-holes 25 of the first partition member 2 and the second through-holes 35 of the second partition member 3, and includes a flow path through which refrigerant flows inside. The refrigerant flow path 4 has a meandering shape in which straight pipe portions 4a extending in the X direction and curved pipe portions 4b connecting adjacent straight pipe portions 4a are alternately formed, and is continuous from one end 4c to the other end 4d as a whole. In the ice-making heat exchanger 1, as refrigerant flows from one end 4c to the other end 4d of the refrigerant flow path 4, the water introduced into the ice-making space S is cooled through the first partition member 2 and the second partition member 3.

[0020] As shown in FIG. 3, the refrigerant flow path 4 includes two hairpin pipes 41 in which two straight pipe portions 4a are connected by a bent pipe portion 4b, and a joint 43 formed by the bent pipe portion 4b. The refrigerant flow path 4 is configured such that the joint 43 is joined to the ends of the two hairpin pipes 41 with the two hairpin pipes 41 inserted into the first through hole 25 of the first partition member 2 and the second through hole 35 of the second partition member 3. Note that the hairpin pipe 41 is an example of a pipe.

[0021] Also, as shown in FIG. 4, on the inner peripheral surface of the straight pipe portion 4a of the hairpin pipe 41, irregularities 4e extending along the X direction and facing the refrigerant flow path are formed. As a result, in the refrigerant flow path 4, the surface area of the straight pipe portion 4a in contact with the refrigerant flowing through the refrigerant flow path 4 is larger than when the irregularities 4e are not formed. Consequently, the cooling efficiency by the refrigerant flowing through the refrigerant flow path 4 is improved. In the example shown in FIG. 4, the irregularities 4e are formed on the lower side of the straight pipe portion 4a, but the present invention is not limited to this. For example, the irregularities 4e may be formed over the entire circumference of the inner peripheral surface of the straight pipe portion 4a. Also, in the example shown in FIG. 4, the irregularities 4e are formed on all the straight pipe portions 4a, but the present invention is not limited to this, and there may be a straight pipe portion 4a on which the irregularities 4e are not formed.

[0022] Also, as shown in FIG. 5, the outer diameter of the straight pipe portion 4a of the refrigerant flow path 4 is substantially equal to the inner diameter of the first through hole 25 of the first partition member 2 and the inner diameter of the second through hole 35 of the second partition member 3. In the ice-making heat exchanger 1, the outer peripheral surface of the straight pipe portion 4a of the refrigerant flow path 4 is in contact with the inner peripheral surface of the first through hole 25 of the first partition member 2. Similarly, the outer peripheral surface of the straight pipe portion 4a of the refrigerant flow path 4 is in contact with the inner peripheral surface of the second through hole 35 of the second partition member 3. Thereby, in the ice-making heat exchanger 1, the movement of the first partition member 2 and the second partition member 3 in the X direction with respect to the refrigerant flow path 4 is restricted, and the formation of a gap between the first partition member 2 and the second partition member 3 is suppressed. Also, in order to restrict the movement of the first partition member 2 and the second partition member 3 with respect to the refrigerant flow path 4, it becomes unnecessary to perform brazing or the like, and the configuration of the ice-making heat exchanger 1 can be simplified.

[0023] (Film) In the ice-making heat exchanger 1 of this embodiment, a film having corrosion resistance is formed on the outer surfaces of the first partition member 2 and the second partition member 3. The film can be formed, for example, by applying a corrosion-resistant paint or by plating treatment. In the ice-making heat exchanger 1, by forming a film on the outer surfaces of the first partition member 2 and the second partition member 3, the corrosion resistance of the first partition member 2 and the second partition member 3 is improved. Also, by forming a film on the outer surfaces of the first partition member 2 and the second partition member 3, the gap existing between the first partition member 2 and the second partition member 3 can be sealed.

[0024] The film is not particularly limited, but for example, a film made of a resin such as an acrylic resin or a melamine resin, or a metal such as tin, nickel, or cobalt can be used. Also, the thickness of the film can be about 5 μm to 80 μm.

[0025] (Usage method) The ice-making heat exchanger 1 of this embodiment can be used, for example, in a so-called cell-type ice maker. Specifically, in the cell-type ice maker, the ice-making heat exchanger 1 is arranged such that the opening of the ice-making space S faces the water injection port. And when ice is generated (ice-making) in the ice-making heat exchanger 1, a refrigerant is supplied to the refrigerant flow path 4, and the first partition member 2 and the second partition member 3 are cooled. Also, water is introduced into the ice-making space S from the injection port, and this water is cooled by contacting the first partition member 2 and the second partition member 3 and gradually freezes. Thereby, rectangular parallelepiped-shaped ice is generated in each ice-making space S. Then, a refrigerant heated to a predetermined temperature is supplied to the refrigerant flow path 4, the surface of the ice generated in the ice-making space S melts, and the ice is removed from the ice-making heat exchanger 1.

[0026] (Manufacturing method) FIG. 6 is a flowchart showing an example of the manufacturing procedure of the ice-making heat exchanger 1. FIGS. 7(a) to (b) are diagrams showing the procedure for manufacturing the first partition member 2 in the manufacture of the ice-making heat exchanger 1. Next, with reference to FIGS. 6 and 7(a) to (b) and FIG. 3 described above, a method for manufacturing the heat exchanger 1 for ice making according to the present embodiment will be described.

[0027] First, by extrusion, an extruded member 10 that is the basis of the first partition member 2 is formed (step 101). Specifically, with the X direction as the extrusion direction, the extruded member 10 is formed by extruding a metal as the material from a mold having a predetermined shape. The length of the extruded member 10 in the X direction is formed to be longer than that of the first partition member 2. In this example, the length of the extruded member 10 in the X direction is approximately four times the length of the first partition member 2 in the X direction.

[0028] Also, as shown in FIG. 7(a), the extruded member 10 extends in the X and Y directions, and includes a stretching surface 12 that is the basis of the bottom surface 22 (see FIG. 3 etc.) and a plurality (five in this example) of rising surfaces 11 that are the basis of the first partition walls 21 (see FIG. 3 etc.), each of which extends along the X direction and rises from the stretching surface 12 in the Z direction (upward). Incidentally, the rising surfaces 11 have a plate-like shape along the X and Z directions and are arranged at equal intervals in the Y direction on the stretching surface 12. Furthermore, the extruded member 10 has a rectangular parallelepiped shape continuous below the stretching surface 12 and includes a block portion 13 that is the basis of the first cooling portion 23 (see FIG. 3 etc.). Furthermore, a plurality (four in this example) of through holes 15 that penetrate the block portion 13 in the X direction and are the basis of the first through holes 25 (see FIG. 3 etc.) are formed in the extruded member 10.

[0029] Subsequently, as shown in FIG. 7(b), the obtained extruded member 10 is cut along a plane perpendicular to the X direction to produce a plurality (four in this example) of first partition members 2 (step 102). Specifically, by cutting the extrusion member 10, a plurality of first partition members 2 are produced, each having a bottom surface 22 where the stretching surface 12 is cut, a plurality of first partition walls 21 where each rising surface 11 is cut, and a first cooling part 23 where the block part 13 is cut. Further, in the first cooling part 23 of the obtained first partition member 2, a plurality of first through holes 25 where the respective through holes 15 are cut are formed.

[0030] Subsequently, the plurality of first partition members 2 obtained in step 102 and the plurality of second partition members 3 obtained by pressing or the like are alternately arranged in the X direction (step 103). At this time, the first partition member 2 and the second partition member 3 are arranged such that the first partition wall 21 of the adjacent first partition member 2 and the second partition wall 31 of the second partition member 3 are in contact. Further, the first partition member 2 and the second partition member 3 are arranged such that the respective first through holes 25 formed in the first partition member 2 and the respective second through holes 35 formed in the second partition member 3 are continuous in the X direction.

[0031] Subsequently, with respect to the first through holes 25 of the first partition member 2 and the second through holes 35 of the second partition member 3 arranged in step 103, the straight pipe part 4a of the hairpin pipe 41 constituting the refrigerant flow path 4 is inserted along the X direction (step 104). In a state where the hairpin pipe 41 is inserted into the first through holes 25 and the second through holes 35, the tip of the hairpin pipe 41 (straight pipe part 4a) protrudes from the second partition member 3 located on the downstream side in the X direction. In step 104, it is preferable to use a hairpin pipe 41 in which the outer diameter of the straight pipe part 4a is slightly smaller than the inner diameters of the first through holes 25 and the second through holes 35. This makes it easier to insert the hairpin pipe 41 into the first through holes 25 and the second through holes 35.

[0032] Subsequently, in step 104, the straight pipe portion 4a of the hairpin pipe 41 inserted into the first through hole 25 and the second through hole 35 is expanded (step 105). Specifically, the outer diameter of the straight pipe portion 4a is increased by pushing and expanding the straight pipe portion 4a of the hairpin pipe 41 from the inside to the outside. Thereby, the outer peripheral surface of the straight pipe portion 4a is brought into contact with the inner peripheral surfaces of the first through hole 25 and the second through hole 35. In the present embodiment, by expanding the hairpin pipe 41 (straight pipe portion 4a) inserted into the first through hole 25 and the second through hole 35, the adhesion between the outer peripheral surface of the straight pipe portion 4a and the inner peripheral surfaces of the first through hole 25 and the second through hole 35 can be improved. As a result, the movement of the first partition member 2 and the second partition member 3 in the X direction with respect to the refrigerant flow path 4 is restricted, and the formation of a gap between the first partition member 2 and the second partition member 3 can be suppressed.

[0033] Subsequently, a U-shaped joint 43 is joined to the end of the hairpin pipe 41 protruding from the second partition member 3 located on the downstream side in the X direction by means such as argon welding (step 106). Thereby, a refrigerant flow path 4 having a meandering shape continuous from one end 4c (see FIG. 1) to the other end 4d (see FIG. 1) is obtained.

[0034] Subsequently, a coating film is formed by applying a corrosion-resistant paint or performing a plating process on the outer surfaces of the first partition member 2 and the second partition member 3 (step 107). Thereby, even if there is a gap between the first partition member 2 and the second partition member 3, this gap is sealed by the coating film. Through the above steps, the ice-making heat exchanger 1 shown in FIGS. 1 to 5 is obtained.

[0035] Incidentally, in the example described above, a configuration is adopted in which a coating film is formed on the outer surfaces of the first partition member 2 and the second partition member 3, and this coating film seals the gap between the first partition member 2 and the second partition member 3. As a configuration for sealing the gap between the first partition member 2 and the second partition member 3, for example, the following may be adopted. That is, the second partition member 3 is a so-called brazing material in which a layer made of a brazing filler metal is formed on the surface facing the first partition member 2. Then, in the manufacturing process of the ice-making heat exchanger 1 described above, after inserting the hairpin pipe 41 into the first through hole 25 and the second through hole 35 (step 104), by heating to a predetermined temperature, the brazing filler metal of the second partition member 3 is melted, and the first partition member 2 is adhered to the surface of the second partition member 3. As a result, the space between the first partition member 2 and the second partition member 3 is sealed.

[0036] In this way, by using the second partition member 3 as a brazing material, there is no need to use a brazing filler metal separately from the first partition member 2 and the second partition member 3 or to prepare a brazing jig in order to seal between the first partition member 2 and the second partition member 3. In other words, it is possible to seal the first partition member 2 and the second partition member 3 while suppressing the complexity of the manufacturing process of the ice-making heat exchanger 1.

[0037] (Comparison with conventional ice-making heat exchangers) FIG. 8 is a diagram for explaining an example of the configuration of a conventional ice-making heat exchanger 9, and is a diagram showing the components of the conventional ice-making heat exchanger 9 disassembled. As shown in FIG. 8, the conventional ice-making heat exchanger 9 includes a partition plate 91 formed in a lattice shape, a flat base plate 92, and a press plate 93 formed with grooves 94 corresponding to the refrigerant flow paths by press working, which are laminated in this order. In this ice-making heat exchanger 9, a brazing filler metal is sandwiched and brazed between the partition plate 91 and the base plate 92, and between the base plate 92 and the press plate 93. And in this ice-making heat exchanger 9, a plurality of rectangular parallelepiped spaces for generating ice are formed by the partition plate 91 and the base plate 92, and a refrigerant flow path is formed by the grooves 94 of the base plate 92 and the press plate 93.

[0038] In this way, in order to manufacture the conventional ice-making heat exchanger 9, a mold for forming the press plate 93, a brazing jig for brazing the partition plate 91, the base plate 92, and the press plate 93, etc. are required. As a result, the manufacturing process of the conventional ice-making heat exchanger 9 tends to be complicated.

[0039] In contrast, in the ice-making heat exchanger 1 of the present embodiment, as described above, by continuously passing the hairpin pipe 41 through the first through hole 25 provided in the first partition member 2 and the second through hole 35 provided in the second partition member 3, the first partition member 2, the second partition member 3, and the refrigerant flow path 4 are fixed. As a result, in the manufacture of the ice-making heat exchanger 1, a brazing material and a brazing jig for fixing each member of the ice-making heat exchanger 1 are not required. As a result, it is possible to realize an ice-making heat exchanger 1 that is easier to manufacture than the conventional ice-making heat exchanger 9.

[0040] As described above, the embodiments of the present invention have been described. However, the present invention is not limited to these embodiments. Various modifications and combinations may be made as long as they do not depart from the spirit of the present invention.

Description of Reference Numerals

[0041] 1... Ice-making heat exchanger, 2... First partition member, 3... Second partition member, 4... Refrigerant flow path, 21... First partition wall, 22... Bottom surface, 23... First cooling part, 25... First through hole, 31... Second partition wall, 33... Second cooling part, 35... Second through hole, 41... Hairpin pipe, 43... Joint

Claims

1. A first partition member having a first through hole extending in a first direction, a bottom surface along the first direction, and three or more first partition walls arranged in a second direction along the first direction and rising from the bottom surface and intersecting the first direction, wherein a plurality of spaces surrounded by the bottom surface and the first partition walls are formed in the second direction; A plurality of second partition members disposed on both sides of the first partition member in the first direction and having second partition walls along the second direction intersecting the bottom surface and the first partition walls of the first partition member, and having second through holes penetrating in the first direction formed therein; A pipe extending in the first direction and continuously passed through the first through hole of the first partition member and the second through hole of the second partition member An ice-making heat exchanger comprising the same.

2. The ice-making heat exchanger according to claim 1, wherein the first partition member and the second partition member are restricted from moving in the first direction by contact between an outer peripheral surface of the pipe and inner peripheral surfaces of the first through hole and the second through hole.

3. The ice-making heat exchanger according to claim 1 or 2, wherein a corrosion-resistant film is formed on a surface of the first partition member and / or the second partition member.

4. The ice-making heat exchanger according to claim 1 or 2, wherein a brazing material is formed on a surface of the second partition member adjacent to the first partition member.

5. Having a plurality of the first partition members, The ice-making heat exchanger according to any one of claims 1 to 4, wherein the plurality of first partition members are obtained by cutting one member extruded along the first direction into a plurality of pieces at a surface intersecting the first direction.

6. The ice-making heat exchanger according to any one of claims 1 to 5, wherein the pipe has irregularities formed on an inner peripheral surface thereof.

7. By extrusion molding, an extruded member is formed having a through hole extending in an extrusion direction, an extending surface along the extrusion direction, and three or more rising surfaces arranged in a crossing direction along the extrusion direction and rising from the extending surface and intersecting the extrusion direction, By cutting the extrusion member along an intersection surface along the intersection direction intersecting the extrusion direction, a first through-hole in which the through-hole is cut and extends in the extrusion direction, a bottom surface in which the extension surface is cut, and three or more first partition walls in which the rising surfaces are cut are formed. A plurality of first partition members are produced in which a plurality of spaces surrounded by the bottom surface and the first partition walls are formed in the intersection direction. A plate-shaped second partition member having a second partition wall along the intersection surface and having a second through-hole penetrating in the extrusion direction is disposed between the plurality of first partition members arranged in the extrusion direction. Insert a pipe extending in the extrusion direction into the first through-hole of the first partition member and the second through-hole of the second partition member. A method for manufacturing an ice-making heat exchanger.

8. The method for manufacturing an ice-making heat exchanger according to claim 7, wherein after passing the pipe through the first through-hole of the first partition member and the second through-hole of the second partition member, a corrosion-resistant paint is applied to the surfaces of the first partition member and the second partition member, or a coating is formed by performing plating treatment.

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