High efficiency energy recovery core for ventilation

Abstract

An energy recovery device includes a first fluid path extending between a fresh air inlet and a fresh air outlet, and a second fluid path extending between an exhaust inlet and an exhaust air outlet. The first fluid path and the second fluid path may direct flow in a direction that is substantially parallel to one another through at least part of the energy recovery device. In some cases, a bend may be provided in at least part of the energy recovery device such that the first fluid path directs flow in a direction that is at a first angle relative to fluid flow through the second fluid path for a first portion of the first fluid path, and in a direction that is at a second angle relative to fluid flow through the second fluid path for a second portion of the first fluid path.

1 . An energy recovery device, comprising at least two frames which are adjacently arranged, wherein said at least two frames comprise fresh air-flow and exhaust air-flow frames, characterized in that the fresh air-flow frame comprises fresh air-flow frame rods and a plurality of fresh air-flow ducts arranged therein, with each fresh air-flow duct having a fresh air-flow duct inlet, a fresh air-flow duct outlet, and a bend section of the fresh air-flow duct for connecting them; the exhaust air-flow frame comprises exhaust air-flow frame rods and a plurality of exhaust air-flow ducts arranged therein, with each exhaust air-flow duct having an exhaust air-flow duct inlet, an exhaust air-flow duct outlet, and a bend section of the exhaust air-flow duct for connecting them, wherein the plurality of fresh air-flow ducts and the plurality of exhaust air-flow ducts are in a mirror image arrangement such that the fresh air-flow duct inlets and exhaust air-flow duct outlets are located generally on the same side, and the fresh air-flow duct outlets and the exhaust air-flow duct inlets are located generally on the same side, so that the exhaust air-flow in the space to be ventilated is discharged into the atmosphere from the exhaust air-flow duct outlet after entering the exhaust air-flow duct inlet and passing through the bend section of the exhaust air-flow duct, and the fresh air-flow from the atmosphere enters into the space to be ventilated through the bend section of the fresh air-flow duct after entering the fresh air-flow duct inlet, the fresh air-flow and the exhaust air-flow have energy exchange via the fresh air-flow ducts and the exhaust air-flow ducts. 
     
     
         2 . An energy recovery device according to  claim 1 , characterized in that the fresh air-flow frame and the exhaust air-flow frame are hexagons in shape; the fresh air-flow frame comprises a first fresh air-flow frame rod, a second fresh air-flow frame rod, a third fresh air-flow frame rod, a fourth fresh air-flow frame rod, a fifth fresh air-flow frame rod and a sixth fresh air-flow frame; and the exhaust air-flow frame comprises a first exhaust air-flow frame rod, a second exhaust air-flow frame rod, a third exhaust air-flow frame rod, a fourth exhaust air-flow frame rod, a fifth exhaust air-flow frame rod and a sixth exhaust air-flow frame rod; wherein the fresh air-flow duct inlets of the plurality of fresh air-flow ducts are provided on the fifth fresh air-flow frame rod of the fresh air-flow frame, the fresh air-flow duct outlets of the plurality of fresh air-flow ducts are provided on the first fresh air-flow frame rod of the fresh air-flow frame, the exhaust air-flow duct inlets of the plurality of exhaust air-flow ducts are provided on the second exhaust air-flow frame rod of the exhaust air-flow frame, and the exhaust air-flow duct outlets of the plurality of exhaust air-flow ducts are provided on the fourth exhaust air-flow frame rod of the exhaust air-flow frame, so that the flowing direction of the fresh air-flow in the fresh air-flow ducts is opposite to the flowing direction of the exhaust air-flow in the exhaust air-flow ducts. 
     
     
         3 . An energy recovery device according to  claim 1 , characterized in that each of the plurality of fresh air-flow ducts and each of the plurality of exhaust air-flow ducts are “C-shaped” or “L-shaped”. 
     
     
         4 . An energy recovery device according to  claim 1 , characterized in that each of the plurality of fresh air-flow ducts has unequal lengths, and they are spaced from one another unequally. 
     
     
         5 . An energy recovery device according to  claim 1 , characterized in that each of the plurality of exhaust air-flow ducts has unequal lengths, and they are spaced from one another unequally. 
     
     
         6 . An energy recovery device according to  claim 4 , characterized in that the plurality of fresh air-flow ducts have different inlets and outlets, respectively. 
     
     
         7 . An energy recovery device according to  claim 5 , characterized in that the plurality of exhaust air-flow ducts have different inlets and outlets, respectively. 
     
     
         8 . An energy recovery device according to  claim 1 , characterized in that the energy recovery device further comprises a medium with heat transmissibility and moisture permeability, which is arranged between the at least two frames. 
     
     
         9 . An energy recovery device according to  claim 8 , characterized in that the medium with heat transmissibility and moisture permeability arranged between the at least two frames is a membrane and/or paper. 
     
     
         10 . An energy recovery device according to  claim 1 , characterized in that a cover lid is used for installing said at least two frames. 
     
     
         11 . An energy recovery device according to  claim 1 , characterized in that the fresh air-flow frame, the exhaust air-flow frame, the fresh air-flow ducts and the exhaust air-flow ducts are all made of acrylonitrile-butadiene-styrene. 
     
     
         12 . A Ventilation equipment, characterized in that said ventilation equipment comprises a housing and an energy recovery device according to  claim 1 , with said housing comprising a fresh air-flow inlet, a fresh air-flow outlet, an exhaust air-flow inlet and an exhaust air-flow outlet, wherein the fresh air-flow duct inlets of the energy recovery device are in fluid communication with the fresh air-flow inlet of said housing, the fresh air-flow duct outlets of the energy recovery device are in fluid communication with the fresh air-flow outlet of said housing, the exhaust air-flow duct inlets of the energy recovery device are in fluid communication with the exhaust air-flow inlet of said housing, and the exhaust air-flow duct outlets of the energy recovery device are in fluid communication with the exhaust air-flow outlet of said housing. 
     
     
         13 . An energy recovery device, comprising:
 a first fluid path extending between a fresh air inlet and a fresh air outlet, and a second fluid path extending between an exhaust inlet and an exhaust air outlet; and   wherein the first flow path and the second flow path direct flow in a direction that is substantially parallel to one another through at least part of the energy recovery device.   
     
     
         14 . The energy recovery device of  claim 13 , wherein the first flow path and the second flow path direct flow in a direction that is substantially perpendicular to one another through at least part of the energy recovery device. 
     
     
         15 . The energy recovery device of  claim 13 , wherein the first fluid path defines a plurality of channels lying in a plane. 
     
     
         16 . The energy recovery device of  claim 13 , wherein the first fluid path defines a plurality of channels lying in two or more parallel spaced planes. 
     
     
         17 . The energy recovery device of  claim 13 , wherein the first fluid path defines a plurality of C-shaped or L-shaped channels lying in a plane. 
     
     
         18 . An energy recovery device, comprising:
 a first fluid path extending between a fresh air inlet and a fresh air outlet, and a second fluid path extending between an exhaust inlet and an exhaust air outlet; and   wherein the first flow path and the second flow path each include a bend in at least part of the energy recovery device, and wherein the first flow path directs flow in a direction that is at a first angle relative to fluid flow through the second flow path for a first portion of the first flow path, and directs flow in a direction that is at a second angle relative to fluid flow through the second flow path for a second portion of the first flow path.   
     
     
         19 . The energy recovery device of  claim 18 , wherein the first fluid path and the second fluid path each define a plurality of C-shaped or L-shaped channels. 
     
     
         20 . The energy recovery device of  claim 18 , wherein the first fluid path defines a plurality of channels lying in a plane.