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A heat exchanger usable with a ventilator, the heat exchanger having an improved structure so that air passing through the heat exchanger may be prevented from leaking. The heat exchanger of the general inventive concept includes a heat-exchanging element having a plurality of liners stacked in a un

A heat exchanger usable with a ventilator, the heat exchanger having an improved structure so that air passing through the heat exchanger may be prevented from leaking. The heat exchanger of the general inventive concept includes a heat-exchanging element having a plurality of liners stacked in a uniformly spaced state and a plurality of spacers disposed between the liners to define air passages, and corner guides respectively coupled to corners of the heat-exchanging element. Each of the corner guides includes a guide channel forming a space to receive the corner of the heat-exchanging element so that the corner guides securely come into close contact with the heat-exchanging element, and to minimize a loosening of the corner guide due to an adhesive applied between the heat-exchanging element and the corner guide.

대표청구항 ▼

1. A heat exchanger, comprising: a main body;a heat-exchanging element having a plurality of liners and a plurality of spacers respectively disposed between the plurality of liners to define air passages;corner guides respectively coupled to side corners of the heat-exchanging element and respective

1. A heat exchanger, comprising: a main body;a heat-exchanging element having a plurality of liners and a plurality of spacers respectively disposed between the plurality of liners to define air passages;corner guides respectively coupled to side corners of the heat-exchanging element and respectively having a space to receive each side corner of the heat-exchanging element;covers respectively having coupling portions to couple with the corner guides at a position corresponding to the space and respectively disposed at an upper portion and a lower portion of the heat-exchanging element and corner guides; andguide rails arranged within the main body to guide the heat exchanger when placing the heat exchanger within the main body,wherein each of the corner guides comprises a guide channel forming a cylindrical space outside each corner of the heat-exchanging element and having an outer surface having a C-shaped cross section, an inner surface, and contacts extended from both ends of the guide channel to contact adjacent sides of each corner of the heat-exchanging element, andwherein each of the guide rails has a C-shaped cross section corresponding to each of the outer surface of the corner guides of the heat exchanger, and each of the guide rails includes an inner surface, wherein at least half of the inner surface is configured to contact each outer surface of the corner guides to support each outer surface of the corner guides when mounting the heat exchanger on the main body. 2. The heat exchanger according to claim 1, wherein each cover has flanges bent toward respective sides of the heat-exchanging element, and the flanges cover the upper and lower ends of the corner guides so as to bring the corner guides into close contact with the heat-exchanging element. 3. The heat exchanger according to claim 1, wherein the heat-exchanging element comprises layers formed by the adjacent liners, and first and second passages disposed in the layers alternatively in first and second directions crossing with each other, respectively. 4. The heat exchanger according to claim 1, wherein the guide channel comprises a corner receiving portion into which each corner of the heat-exchanging element is inserted, and a fixing portion having a cylindrical space between the corner receiving portion and the inner surface of each corner guide to insert a fastener to secure each cover, the cylindrical space having a portion which is open to the corner receiving portion. 5. The heat exchanger according to claim 3, wherein the corner guides prevent air passing through the first and second passages from being mixed. 6. The heat exchanger according to claim 4, wherein the both sides of the fixing portion form the corner receiving portion to receive the corresponding corner of the heat-exchanging element. 7. The heat exchanger according to claim 6, wherein each corner guide further comprises: an adhesive disposed in the corner receiving portion to attach the corner guide to the corner of the heat-exchanging element.