KR-102963618-B1 - PLATE TYPE HEAT EXCHANGER

KR102963618B1KR 102963618 B1KR102963618 B1KR 102963618B1KR-102963618-B1

Abstract

(Project) Provides a plate heat exchanger with high thermal efficiency. (Solution) In a plate-type heat exchanger (1) in which a plurality of heat exchangers (10) are stacked, adjacent blocks (5) are connected so that heat flow flows from the outlet (72) of one block (5) to the inlet (71) of the other block (5), and a pipe (21) is inserted from one end side to the other end side in the stacking direction of the heat exchangers (10), and the other end end of the pipe (21) is inserted into an opening of either the inlet (71) or the outlet (72) of the other end block (5a) located at the far end side, and an inlet wall (12g) is formed in the opening of the other end block (5a) into which the other end end of the pipe (21) is inserted, protruding from the opening edge (12h) toward the one end side.

Inventors

오노 다카히로

Assignees

린나이코리아 주식회사
린나이가부시기가이샤

Dates

Publication Date: 20260511
Application Date: 20210819
Priority Date: 20200907

Claims (3)

A plate-type heat exchanger configured by stacking a plurality of blocks, each having at least one heat exchanger, The heat exchanger is configured to exchange heat between a heat medium circulating in the internal space of the heat exchanger and combustion exhaust circulating outside the heat exchanger, and In each of the plurality of blocks above, an inlet port for introducing the heat transfer medium into each block and an outlet port for extracting the heat transfer medium from each block are formed. Adjacent blocks among the plurality of blocks are connected so that the heat transfer fluid flows from the outlet of one block to the inlet of the other block. The adjacent blocks are configured such that the flow path direction of the heat transfer fluid circulating in the internal space of the heat exchanger of one block is different from that of the heat transfer fluid circulating in the internal space of the heat exchanger of the other block. A pipe is inserted from one end to the other end in the stacking direction of the heat exchanger so as to penetrate a part of the plate-type heat exchanger, and The other end of the pipe is inserted into an opening of either the inlet or the outlet of the other end block so as to communicate with the internal space of the heat exchanger constituting the other end block where the pipe is located at the other end side. In the opening of the other end block into which the other end of the pipe is inserted, an insertion wall is formed that protrudes toward the first end from the opening edge, and by the pipe-side positioning part formed in the pipe and the block-side positioning part formed in the first end block located at the end end coming into contact, the insertion length of the pipe in the first end block is regulated. The above piping is a plate-type heat exchanger in which the first length (L1) from the pipe-side positioning part to the other end opening is set to be longer than the second length (L2) from the block-side positioning part to the base of the wall.
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In claim 1, The above-mentioned end block has a concave portion facing toward the end side at the periphery of the opening into which the pipe is inserted, and The above piping is a plate-type heat exchanger in which the first length (L1) is set to be shorter than the sum of the second length (L2) and the depth (L3) of the concave portion (L2+L3).

Description

Plate Type Heat Exchanger The present invention relates to a plate-type heat exchanger configured by stacking a plurality of blocks having heat exchange bodies. A plate-type heat exchanger is proposed having a plurality of heat exchangers joined with an upper heat exchange plate and a lower heat exchange plate (e.g., Patent Document 1). Each heat exchanger has an internal space through which a heat transfer medium flows between the upper heat exchange plate and the lower heat exchange plate, and a plurality of through holes through which combustion exhaust flows in the vertical direction while penetrating the internal space in a non-combustible state. The plate-type heat exchanger according to Patent Document 1 is constructed by stacking a plurality of blocks, each having at least one heat exchanger, in an up-and-down direction. Additionally, blocks adjacent in the up-and-down direction are connected to each other to allow heat transfer fluid to flow through them. Furthermore, adjacent blocks are configured such that the flow path of the heat transfer fluid flowing through one block is different from that of the heat transfer fluid flowing through the other block. By doing so, the flow path of the heat transfer fluid flowing through the heat exchanger becomes longer in proportion to the number of blocks, thereby increasing thermal efficiency. In addition, in the above-described plate-type heat exchanger, an inlet pipe for supplying heat transfer fluid is inserted into one opening of the lowest-level heat exchanger constituting the inlet of the lowest-level block located at the lowest-level of the combustion exhaust gas path. Furthermore, in the heat exchanger located upstream of the combustion exhaust gas path from the lowest-level heat exchanger, an opening is formed at a position corresponding to another opening of the lowest-level heat exchanger. Then, an outlet pipe is inserted from the other opening of the lowest-level heat exchanger to one opening of the heat exchanger constituting the outlet of the uppermost block, thereby connecting the internal space of the heat exchanger having the outlet with the outlet pipe. Accordingly, in this plate-type heat exchanger, the heat transfer fluid flowing from the inlet pipe into the lowest-level block flows from the lowest-level block toward the uppermost block and is discharged through the outlet pipe from the outlet of the uppermost block. Then, the heat transfer fluid discharged through the outlet pipe flows down the outlet pipe and is discharged to the outside of the plate-type heat exchanger. FIG. 1 is a schematic partial cutaway perspective view showing a heat source having a heat exchanger according to an embodiment of the present invention. FIG. 2 is a schematic partially exploded perspective view showing a heat exchanger according to an embodiment of the present invention. FIG. 3 is a schematic diagram illustrating the flow of combustion exhaust and heat transfer fluid in a heat exchanger according to an embodiment of the present invention. FIG. 4 is a schematic exploded perspective view showing two heat exchangers in the upstream region of the combustion exhaust gas path in a heat exchanger according to an embodiment of the present invention. FIG. 5 is a schematic plan view showing an example of the upper surface of one heat exchange plate constituting a heat exchanger in a heat exchanger according to an embodiment of the present invention. FIG. 6 is a schematic plan view showing an example of the upper surface of a heat exchange plate constituting a heat exchanger in a heat exchanger according to an embodiment of the present invention. FIG. 7 is a schematic partial cross-sectional view of the outlet pipe side showing a part of a heat exchanger according to an embodiment of the present invention. Hereinafter, a plate-type heat exchanger and a heat source equipped with the same according to the present embodiment will be described in detail with reference to the attached drawings. As shown in FIG. 1, the heat source according to the present embodiment is a water heater that heats water (heat medium) flowing into the heat exchanger (1) from the inlet pipe (20) by combustion exhaust generated from the burner (31) and supplies it to a place of hot water use (not shown), such as a karan or shower, through the outlet pipe (21). Although not shown, the water heater is assembled inside a casing. In addition, other heat mediums (e.g., antifreeze) may be used as heat mediums. In this water heater, a burner body (3), a combustion chamber (2), a heat exchanger (1), and a drain receiver (40) are installed sequentially from the top to form the outer perimeter of the burner (31). Additionally, a fan case (4) equipped with a combustion fan that supplies a mixture of fuel gas and air into the burner body (3) is installed on one side of the burner body (3) (right side in FIG. 1). Additionally, an exhaust duct (41) communicating with the drain receiver (40) is installed o