A subcooler, comprising: a supercooling body to receive a first refrigerant passed through a condenser and a second refrigerant branched from the first refrigerant; a plurality of internal tubes provided inside the supercooling body and through which the first refrigerant flows; a flow path through which the second refrigerant flows, the flow path being a space external to the internal tubes in the supercooling body; and a baffle to support at least one of the internal tubes, wherein the plurality of internal tubes comprises: a first row pipe part in which a first plurality of pipes are arranged; a second row pipe part that is spaced apart from the first row pipe part and in which a second plurality of pipes are arranged; and a third row pipe part that is spaced apart from the second row pipe part and in which a third plurality pipes are arranged, wherein the baffle comprises: a baffle body having an outer circumferential surface that is coupled to the supercooling body, a through-hole formed at the baffle body and through which the first row pipe part passes, and a support groove to support the second row pipe part, wherein the first row pipe part is coupled with the through-hole of the baffle, the second row pipe part is supported by the supporting groove of the baffle, and the third row pipe part is spaced apart from the baffle, wherein a plurality of support grooves are provided, and the baffle body comprises a groove connection part that connects a first support groove of the support grooves with a second support groove of the support grooves, characterized in that: the groove connection part is provided at a position that intersects with an imaginary concentric circle, whereby the imaginary concentric circle has a radius (r) that is set from a center of a pipe of the third row pipe part and is in contact with a pipe of the second row pipe part. a supercooling body to receive a first refrigerant passed through a condenser and a second refrigerant branched from the first refrigerant; a plurality of internal tubes provided inside the supercooling body and through which the first refrigerant flows; a flow path through which the second refrigerant flows, the flow path being a space external to the internal tubes in the supercooling body; and a baffle to support at least one of the internal tubes, wherein the plurality of internal tubes comprises: a first row pipe part in which a first plurality of pipes are arranged; a second row pipe part that is spaced apart from the first row pipe part and in which a second plurality of pipes are arranged; and a third row pipe part that is spaced apart from the second row pipe part and in which a third plurality pipes are arranged, wherein the plurality of internal tubes comprises: a first row pipe part in which a first plurality of pipes are arranged; a second row pipe part that is spaced apart from the first row pipe part and in which a second plurality of pipes are arranged; and a third row pipe part that is spaced apart from the second row pipe part and in which a third plurality pipes are arranged, a first row pipe part in which a first plurality of pipes are arranged; a second row pipe part that is spaced apart from the first row pipe part and in which a second plurality of pipes are arranged; and a third row pipe part that is spaced apart from the second row pipe part and in which a third plurality pipes are arranged, wherein the baffle comprises: a baffle body having an outer circumferential surface that is coupled to the supercooling body, a through-hole formed at the baffle body and through which the first row pipe part passes, and a support groove to support the second row pipe part, a baffle body having an outer circumferential surface that is coupled to the supercooling body, a through-hole formed at the baffle body and through which the first row pipe part passes, and a support groove to support the second row pipe part, wherein the first row pipe part is coupled with the through-hole of the baffle, the second row pipe part is supported by the supporting groove of the baffle, and the third row pipe part is spaced apart from the baffle, wherein a plurality of support grooves are provided, and the baffle body comprises a groove connection part that connects a first support groove of the support grooves with a second support groove of the support grooves, characterized in that: the groove connection part is provided at a position that intersects with an imaginary concentric circle, whereby the imaginary concentric circle has a radius (r) that is set from a center of a pipe of the third row pipe part and is in contact with a pipe of the second row pipe part.