Anti-freezing pipe having built-in tube and high-efficiency heat exchanger using the same

Abstract

An anti-freezing pipe having a built-in tube and a high-efficiency heat exchanger using the same, includes a heat transfer pipe made of metal and configured to allow a fluid to move therethrough and a hollow tube located and supported in the heat transfer pipe. The tube has a sealed space defined therein by sealants fitted into both end portions thereof and is provided on an outer diameter surface thereof with a wing formed in a spiral shape, and the heat transfer pipe is 10 provided at an end portion thereof with a stopper to prevent escape of the tube therefrom due to the flow of fluid.

What is claimed is: 
     
         1 . An anti-freezing pipe having a built-in tube, the anti-freezing pipe comprising:
 a heat transfer pipe configured to allow a fluid to move therethrough; and   a hollow tube located and supported in the heat transfer pipe,   wherein the tube has a sealed space defined therein by sealants sprayed into both end portions thereof at high pressure and is provided on an outer diameter surface thereof with a wing formed in a spiral shape, and   wherein the heat transfer pipe is provided with a stopper to prevent escape of the tube therefrom.   
     
     
         2 . The anti-freezing pipe according to  claim 1 , wherein the wing or the tube is provided with a coating layer integrally formed on an outer surface thereof so as to minimize friction, and
 wherein the coating layer is implemented as a Teflon coating layer or a chrome plating layer.   
     
     
         3 . The anti-freezing pipe according to  claim 1 , wherein the sealants defining the sealed space in the tube are made of the same material as the tube,
 wherein the tube and the wing are made of different materials, and   wherein the wing is made of metal or thermally conductive plastic and is mounted such that at least a portion thereof is in surface contact with an inner diameter surface of the heat transfer pipe.   
     
     
         4 . The anti-freezing pipe according to  claim 1 , wherein the heat transfer pipe is made of metal, and
 wherein the stopper is implemented as one selected from among a sleeve provided on an inner diameter surface of the heat transfer pipe, a diameter-contracted portion, a vortex fan unit, and an extension portion.   
     
     
         5 . The anti-freezing pipe according to  claim 1 , wherein the heat transfer pipe is connected to a separate linear connection pipe or a separate U-pipe via a joint portion or is connected to an external structure, and
 wherein the heat transfer pipe is further provided with a reinforcing member implemented as one selected from among a sleeve mounted on an inner diameter surface or an outer diameter surface of a portion of the heat transfer pipe adjacent to the joint portion and an extension portion overlapping an inner diameter surface of the heat transfer pipe.   
     
     
         6 . A high-efficiency heat exchanger comprising:
 a frame;   a flow pipe constituted by a plurality of heat transfer pipes mounted inside the frame;   cooling fins connected to the plurality of heat transfer pipes;   a U-pipe interconnecting end portions of neighboring ones of the plurality of heat transfer pipes of the flow pipe;   a supply header pipe and a discharge header pipe connected to the flow pipe to simultaneously supply or discharge a refrigerant to or from the flow pipe;   a tube inserted into each of the plurality of heat transfer pipes; and   a connection pipe connected to at least one of the plurality of heat transfer pipes,   wherein the tube has a sealed space defined therein by sealants sprayed into both end portions thereof at high pressure and is provided on an outer diameter surface thereof with a wing, and   wherein each of the plurality of heat transfer pipes or the connection pipe is provided with a stopper to restrict movement of the tube.   
     
     
         7 . The high-efficiency heat exchanger according to  claim 6 , wherein the stopper is implemented as one selected from among a diameter-contracted portion, a sleeve, an unpowered fan, and an extension portion, and
 wherein the diameter-contracted portion is provided with a spiral guide groove formed therein.   
     
     
         8 . The high-efficiency heat exchanger according to  claim 6 , wherein each of the plurality of heat transfer pipes comprises a flared enlarged portion formed at an end portion thereof exposed to an outside of the frame,
 wherein a connection portion formed by performing welding on the enlarged portion is mounted to form an extra space to allow one or more connection portions to be formed when one side of the connection portion is cut,   wherein each of the plurality of heat transfer pipes is further provided with a reinforcing member located on an inner diameter surface or an outer diameter surface of the extra space, and   wherein the reinforcing member is implemented as one selected from among a sleeve located on the inner diameter surface or the outer diameter surface of the extra space and an extension portion extending from the U-pipe.   
     
     
         9 . The high-efficiency heat exchanger according to  claim 6 , wherein the supply header pipe and the discharge header pipe are connected to each other via a bypass pipe provided therein with a check valve configured to operate at a predetermined pressure or higher. 
     
     
         10 . The high-efficiency heat exchanger according to  claim 6 , wherein the tube and the sealants are made of the same material,
 wherein the tube and the wing are made of different materials,   wherein the wing is made of metal or thermally conductive plastic and is mounted such that at least a portion thereof is in surface contact with an inner diameter surface of each of the plurality of heat transfer pipes, and   wherein the wing or the tube is provided with a coating layer integrally formed on an outer surface thereof so as to minimize friction.   
     
     
         11 . The high-efficiency heat exchanger according to  claim 6 , wherein the tube or each of the plurality of heat transfer pipes is formed in a circular or elliptical shape. 
     
     
         12 . The high-efficiency heat exchanger according to  claim 6 , wherein the U-pipe comprises a fractured portion formed thereon so as to allow pressure to be concentrated thereon or is configured such that at least a portion thereof has a smaller thickness than each of the plurality of heat transfer pipes.