KR101554013B1 - Heat exchanger with structure of Expanded Poly Propylene - Google Patents

Abstract

The present invention relates to a foamed polypropylene resin type total enthalpy heat exchanger having improved assembly and workability.
Accordingly, a technical object of the present invention is to provide an all-pass heat exchanger for injection molding with an EPP (Expanded Polypropylene) resin, which comprises an upper and a lower case, A separate maintenance opening and closing plate can be easily attached and detached by a fastening screw so as to facilitate detachment and attachment during maintenance such as exchange, replacement, and the like, so that the above-mentioned supply and exhaust fan can be replaced, When the upper and lower cases are assembled and joined together, the reinforcing bracket is fitted to the outer circumferential surface of the fastening plate which is vertically abutted, and then the fastening bolts are passed through to fix the plural fastening plates up and down. And a rib for PCB case protruding upwardly and downwardly symmetrically on one side of the upper and lower cases, (PCB) protecting plate having a plate-shaped fitting protrusion is assembled to the fitting groove by means of male and female concave / convex fitting, so that the assembly screw (screw So that it is easy to work, the cost is reduced, and the product quality is greatly improved.
In addition, the present invention can be applied to various types of connecting pipes (a flange pipe for duct connection, a back draft damper for preventing backward flow) and a motor connecting plate which are coupled to the main body of the total enthalpy heat exchanger divided into upper and lower cases, Or EPP (expanded polypropylene) resin, the noise and vibration generation are remarkably reduced as compared with the conventional total enthalpy heat exchanger using a metal material, and at the same time, due to vaporization and liquefaction phenomena occurring during heat exchange, Is formed so as not to be corroded (to prevent rusting), and the heat exchange efficiency is remarkably improved by the excellent heat insulating property.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foamed polypropylene resin type total heat exchanger having improved assembling performance and workability,

The present invention relates to an exhaust heat exchanger for injection molding with an EPP (Expanded Polypropylene) resin, wherein the exhaust heat exchanger is divided into two by an upper case and a lower case, A separate maintenance opening / closing plate can be easily attached and detached by a fastening screw so as to facilitate detachment and attachment during maintenance of the refrigerator, so that the supply / exhaust fan can be replaced, The reinforcing bracket is fitted to the outer circumferential surface of the fastening plate which abuts the upper case and the lower case when the lower case is assembled, and then the fastening bolt is penetrated to fix the plurality of fastening plates up and down, (PCB) ribs protruding upwardly and downwardly symmetrically with respect to one another are formed on one side of the upper and lower cases, (PCB) protection plate having a fitting protrusion in a plate form is assembled to the fitting groove by male and female concave / convex fitting method, so that the fixing screw (screw) of the assembly screw The present invention relates to a foamed polypropylene resin type total enthalpy heat exchanger having improved assemblability and workability, which is characterized in that the work is easily performed, the cost is reduced, and the product quality is greatly improved.

In addition, the present invention can be applied to various types of connecting pipes (a flange pipe for duct connection, a back draft damper for preventing backward flow) and a motor connecting plate which are coupled to the main body of the total enthalpy heat exchanger divided into upper and lower cases, Or EPP (expanded polypropylene) resin, the noise and vibration generation are remarkably reduced as compared with the conventional total enthalpy heat exchanger using a metal material, and furthermore, due to vaporization and liquefaction phenomena generated during heat exchange, Is formed so as not to be corroded (to prevent rusting), and the heat exchange efficiency is remarkably improved by the excellent heat insulating property.

In general, the total enthalpy heat exchanger is a device for passing the enthalpy of the exhaust air to the intake side air by allowing the air supply air and the exhaust air to pass through the heat exchanger in order to improve the indoor air quality and improve the energy efficiency.

That is, the conventional total enthalpy heat exchanger exchanges the outdoor air with the indoor air discharged to the outside so that the sudden cool air and the heat do not flow from the outside to the inside in ventilating the indoor air.

Therefore, the total enthalpy heat exchanger discharges the volatile organic compound material generated in the room through the exhaust and keeps the air in the room pleasantly by sucking the filtered fresh air into the room.

When the air in the air-conditioned room is discharged to the outside, the exhaust fan installed in the total enthalpy heat exchanger operates. At this time, air passing through the total enthalpy heat exchanger element in the room is contaminated air And is discharged to the outside.

On the contrary, when the air supply fan installed in the total enthalpy heat exchanger is operated, air is sucked into the room while passing through the total enthalpy heat exchanger element from outside with a static pressure generated.

At this time, heat and mass transfer is performed through the total enthalpy heat exchanger element, and energy loss through ventilation is minimized.

When the air supply fan and the exhaust fan of the total enthalpy heat exchanger are operated simultaneously, the static pressure in the room and the static pressure in the outdoor are constantly maintained.

However, such a conventional total enthalpy heat exchanger typically forms a box-shaped enclosure by using a metal (iron plate, iron plate, etc.) material, and a through duct for conveying air in the enclosure is connected to other duct pipes And it is also made of metal (steel plate) material (such as a connection pipe or a back draft damper), and the indoor environment is rather contaminated due to corrosion (rusting) of the housing due to vaporization and liquefaction phenomenon .

In addition, the conventional metal type total enthalpy heat exchanger is a form assembled by bending a thin steel plate. The metal type total enthalpy heat exchanger is a form assembled by bending a thin steel plate. The metal type total enthalpy heat exchanger generates noise and vibration due to airflow, And the heat exchange efficiency is not so high.

In addition, the above-described conventional total enthalpy heat exchanger is generally constructed such that the flow line of the air supply and exhaust air flows only in one direction (one direction), and the flow direction of the flow path is selectively and fluidly installed There is a problem that the workability and usability are deteriorated.

Recently, a product improved by the above-mentioned problem using foaming polypropylene resin has been introduced. However, since the resin type total enthalpy heat exchanger described above is poor in the rigidity of the joint thread portion when assembling the upper and lower plates, The quality of the product is deteriorated, and a problem of the complete heat exchange can not be achieved.

In addition, the above-mentioned improvement product has a disadvantage that the upper and lower cases must be completely separated at the time of maintenance of the feed and exhaust fan installed therein, although the lid is partly constructed so that the upper and lower cases are joined and only the total enthalpy heat exchanger is detached The problem that the workability is lowered still continues.

In addition, the improvement product described above is formed such that the PCB mounting hole is formed as a separate housing and is joined to the outer circumferential surface through a screw or the like, which requires the work of a skilled worker and requires precision of assembly, (Screw, electric power tool), which is a problem in the related art.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is a technical object of the present invention to provide an total enthalpy heat exchanger for injection molding with an EPP (expanded polypropylene) resin, A separate maintenance opening / closing plate is easily detachably attached to the main body surface by a fastening screw so as to facilitate detachment / attachment during maintenance such as replacement or replacement of a feed / exhaust fan, so that the upper and lower cases And the upper and lower cases are assembled, the reinforcing bracket is fitted to the outer circumferential surface of the fastening plate which abuts the upper and lower cases, and then the fastening bolts are passed through the upper and lower fastening plates, , The assembly rigidity and the coupling property are greatly improved, and one side of the upper and lower cases is symmetrical (PCB) ribs are formed on the surface of the rib for the PCB case, and a PCB protection plate having a plate-shaped fitting protrusion is formed in the fitting groove on the surface of the rib case for the PCB case. (Screw) is fastened and fixed to the outer surface of the outer pipe, so that it is easy to work, the cost is reduced, and the product quality is greatly improved. And an object of the present invention is to provide a terrain type total heat exchanger.

In addition, the present invention can be applied to various types of connecting pipes (a flange pipe for duct connection, a back draft damper for preventing backward flow) and a motor connecting plate which are coupled to the main body of the total enthalpy heat exchanger divided into upper and lower cases, Or EPP (expanded polypropylene) resin, the noise and vibration generation are remarkably reduced as compared with the conventional total enthalpy heat exchanger using a metal material, and at the same time, due to vaporization and liquefaction phenomena occurring during heat exchange, Is formed so as not to be corroded (prevention of rusting), and the heat exchange efficiency is greatly improved by excellent heat insulation.

In order to achieve the above object, according to the present invention, a main body 100 in which upper and lower cases 110 and 120 are divided into two parts and assembled by a fastening plate 130 is formed. Inside the main body 100, When the heating element 200 is coupled to the main body 100, the intersecting flow path 150 is formed by the partition 140 corresponding to each corner of the heating element 200, and the intersecting flow path 150 A plurality of supply and exhaust fans 300 are provided so as to face each other on one side and the other side channel of the main body 100. A coupling hole 160 penetrating through the cross flow path 150 is formed on the outer peripheral surface of the main body 100, And a cover 170 for opening and closing the mounting groove 182 is formed on each side of the upper and lower cases 110 and 120 of the main body 100 so as to selectively engage with the detachable connector motor coupling plate 170. [ 180 are formed symmetrically with respect to one another, wherein the two cases 110, The main body 100 and the partition wall 140, the coupling hole 160, the motor coupling plate 170, the cover 180 and the mounting groove 182 are all made of resin of EPP (Expanded Polypropylene) The entire surface of the upper and lower cases 110 and 120 of the main body of the foamed polypropylene resin type total enthalpy heat exchanger is made to correspond to the positions of the feed and exhaust fans 300 without interfering with the heat- The maintenance opening and closing plate 600 is detachably attached to the upper surface of the upper case 110 and the lower case 110 by a fastening screw 610 so as to be able to exchange, .

When the upper and lower cases 110 and 120 are assembled and joined together, a reinforcing bracket 700 having a cross section of '⊂' shape is fitted on the outer circumferential surface of the fastening plate 130, The incision groove 710 is formed to correspond to the mounting or receiving groove 131 of the fastening plate 130 and the reinforcing bracket 710 is formed on the fastening plate 130. [ The fastening bolts 720 are passed through the fastening bolts 720 on one side of the fastening plate 700 so that the fastening plates 130 are vertically pressed and fixed.

In this case, the upper and lower cases 110 and 120 of the main body are formed symmetrically with respect to each other so as to protrude a rib 800 for a PCB case. On the surface of the PCB case rib 800, And a PCB protection plate 900 having a fitting protrusion 910 as a plate is assembled to the fitting groove 810 in a male and female concave fitting manner.

In the PCB protection plate 900, a through hole 920 having a monitoring window 921 is formed on a surface thereof.

The motor coupling plate 170 is formed such that the coupling protrusions 172 are formed on the outer circumferential surface of the through-type flange 171 so as to correspond to the fitting protrusions 161 formed in the coupling holes 160 of the main body, And a screw coupling portion 173 protruding in an orthogonal direction is formed on the side of the flat surface facing the exhaust fan 300. The screw coupling portion 173 protrudes in a direction perpendicular to the plane of the exhaust fan 300, And screwed by a rear screw (S).

As described above, the present invention relates to a total enthalpy heat exchanger for injection molding with an EPP (Expanded Polypropylene) resin, in which an upper and a lower case are divided into two parts, , The separate maintenance opening / closing plate can be easily attached and detached by the fastening screw so that the maintenance and repair of replacement and the like can be easily performed, so that it is possible to replace, replace or disassemble the fuel supply / exhaust fan without separating the upper and lower cases When the upper and lower cases are assembled and joined together, the reinforcing bracket is fitted to the outer circumferential surface of the fastening plate which is vertically abutted, and then the fastening bolts are passed through the fastening bolts so that the plural fastening plates are fixed by the upper and lower press- A rib for PCB case protruding upwardly and downwardly symmetrically is formed on one side of the upper and lower cases (PCB) shielding plate having a fitting protrusion as a plate shape is assembled to the fitting groove by male and female concave and convex fitting, so that an assembling screw (screw) is formed on the outer surface of the rib, So that it is easy to work, the cost is reduced, and the product quality is greatly improved.

In addition, the present invention can be applied to various types of connecting pipes (a flange pipe for duct connection, a back draft damper for preventing backward flow) and a motor connecting plate which are coupled to the main body of the total enthalpy heat exchanger divided into upper and lower cases, Or EPP (expanded polypropylene) resin, the noise and vibration generation are remarkably reduced as compared with the conventional total enthalpy heat exchanger using a metal material, and furthermore, due to vaporization and liquefaction phenomena generated during heat exchange, Is formed so as not to be corroded (to prevent rusting), and the heat exchange efficiency is greatly improved by the excellent heat insulating property.

1 is a schematic perspective view of an EPP total enthalpy heat exchanger according to the present invention,
Fig. 2 is an exploded perspective view of Fig. 1,
FIGS. 3 to 5 are views showing a state in which a feed and discharge fan is coupled by a motor coupling plate according to the present invention,
6 to 8 are views showing a state in which a reinforcing bracket according to the present invention is used,
9 to 10 are views showing a state in which the PC protective plate according to the present invention is used.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

In order to provide an electrothermal heat exchanger which is convenient and easy to assemble and work with ease, the total enthalpy heat exchanger is made of EPP (Expanded Polypropylene) foamed material excepting the electrothermal elements, And a reinforcing bracket for reinforcing the fastening plate and a simple protection plate (PCB) protection plate are coupled to the lower case surface.

In other words, the essential constitution of the present invention is that the main body 100 is injection-molded from a resin made of EPP (expanded polypropylene) rather than the conventional metal sheet.

Such an EPP resin refers to polypropylene foamed as spherical particles without physically foaming the polypropylene without causing a chemical change therein.

These EPP resins are 100% recyclable, and are environmentally friendly. They have flame retardant treatment and self-extinguishing function of UL flame retardant standard. They maintain high mechanical strength, but they are light in weight and feature low installation cost.

In addition, there is a feature that the occurrence of condensation is prevented due to high heat insulation, heat insulation and sound absorption, as well as the sound insulation effect is remarkably improved.

The main body 100 is formed with the upper and lower cases 110 and 120 divided into two by the fastening plate 130 and the heating element 200 is coupled to the inside of the main body 100. [ When the heating element 200 is coupled to the main body 100, the intersecting flow path 150 is formed by the partition 140 corresponding to each corner of the heat transfer element 200, A plurality of supply and exhaust fans 300 are provided on either one side and the other side flow path so as to face each other.

That is, the intersecting flow path is a path for feeding and exhausting in X-shape by a heating element drawn in a rhomboid shape in a rectangular shape main body, On the other direction surface, a fastening hole 160 which is once opened is formed.

At this time, a coupling hole 160 passing through the intersecting flow path 150 is formed on the outer peripheral surface of the main body 100 in the one direction and the other direction, so that the detachable coupling pipe motor coupling plate 170 is selectively coupled.

The cover 180 for the heating element is formed to be symmetrical with respect to each other so that the mounting groove 182 is opened and closed on each side of the upper and lower cases 110 and 120 of the main body 100, The main body 100 having the lower cases 110 and 120 and the partition wall 140, the coupling hole 160, the motor coupling plate 170 and the cover 180 and the mounting groove 182 are all made of expanded polypropylene (EPP) Propylene) resin.

A plurality of feed and exhaust fans 300 are provided on either one of the intersecting flow paths 150 so as to be opposed to each other to feed the feed and exhaust.

The cover 180 for the heating element is formed symmetrically with respect to the main body 100 so as to open and close the mounting groove 182 on each side of the upper and lower cases 110 and 120 of the main body 100.

1 to 5, the present invention is not limited to the above-described embodiments, and can be applied to any of the above-described embodiments of the present invention, as long as it does not interfere with the heating element cover 180 among the upper and lower cases 110 and 120 of the main body, The maintenance opening and closing plate 600 is formed to be detachably attached to the surface corresponding to the position by the fastening screws 610 so that the replacement and replacement of the supply and exhaust fans 300 without detaching the upper and lower cases 110 and 120 .

In other words, the present invention is characterized in that the maintenance opening / closing plate 600 is formed so as to easily attach and detach the feeding and exhausting fan 300 even after the upper and lower cases are assembled, .

The motor coupling plate 170 is formed such that the coupling protrusions 172 are formed on the outer peripheral surface of the through-type flange 171 so as to correspond to the fitting protrusions 161 formed in the coupling holes 160 of the main body, And a screw coupling portion 173 protruding in an orthogonal direction is formed on the side of the flat surface facing the exhaust fan 300. The screw coupling portion 173 protrudes in a direction perpendicular to the plane of the exhaust fan 300, And screwed by a rear screw (S).

In other words, according to the present invention, when the maintenance opening / closing plate 600 is opened and the screw S is released from the fixing hole 310, And the exhaust fan 300 is easily separated while the exhaust fan 173 is separated from the fixture 310. That is, there is a feature that the upper and lower cases need not be entirely separated.

6 to 8, when the upper and lower cases 110 and 120 are assembled and joined together, the reinforcing bracket 130 having a cross-section '⊂' shape is formed on the outer peripheral surface of the fastening plate 130, The cutting groove 710 is formed on the bent surface of the fastening plate 130 or the receiving groove 131 of the fastening plate 130. The cutting groove 710 is formed on the bent surface of the reinforcing bracket 700, And when the reinforcing bracket 700 is fitted to the fastening plate 130, the fastening bolts 720 are passed through one side of the fastening plate 130 so that a plurality of fastening plates 130 are vertically press-fitted and fixed.

In other words, the upper and lower cases have a plurality of fastening plates 130 formed on the outer circumferential surface (for example, the corrugated side), and the fastening plates, such as bolts and nuts, And the case is formed to be assembled into an integral body.

The total enthalpy heat exchanger of the present invention is not made of sheet metal by bending or welding of an iron plate material but is made to perform assembly and processing of a resin material so that productivity is greatly improved and environmentally friendly, .

However, the above-mentioned upper and lower cases are manufactured using foamed polypropylene resin. In the above-mentioned resin type total enthalpy heat exchanger, due to its material properties, when the fasteners are screwed upon assembling the lower case, In order to solve this problem, the present invention is characterized in that, in order to solve this problem, the present invention is characterized in that the outer circumferential surface of the fastening plate 130 is reinforced with a cross- The incision grooves 710 are formed on the bent surfaces of the reinforcing brackets 700 so that the incision grooves 710 may be formed in the upper surface of the fastening plate 130 131 and the reinforcing bracket 700 is fitted to the fastening plate 130 so that the fastening bolts 720 are passed through one side of the fastening plate 130 so that the fastening plates 130 are vertically press-fitted.

9 to 10, the upper and lower cases 110 and 120 of the main body of the main body 100 are symmetrical with respect to the up and down direction to form a projecting rib 800 for a PCB case, PCB cover ribs 800 are respectively formed with fitting grooves 810. A PCB shielding plate 900 having a plate protrusion 910 is formed in the fitting groove 810 in a male- As shown in FIG.

In the PCB protection plate 900, a through hole 920 having a monitoring window 921 is formed on a surface thereof.

In other words, the insert type PCB protective plate of the present invention can reduce the cost by eliminating waste of use of other subsidiary materials (screw, electric power tool) as well as enabling simple and precise work to the unskilled worker while omitting the use of the screw Feature.

In addition, the detachable connection pipe may be any one of a flange pipe for duct connection and a back draft damper for preventing backward flow so that the coupling protrusion of the coupling pipe is assembled so as to correspond to the fitting protrusion 161 formed in the coupling hole 160 of the main body The connection pipe is formed to be injection-molded from ABS or EPP resin, and the entire outer surface of the total enthalpy heat exchanger is made of a synthetic resin material when coupled with the main body 100.

That is, the coupling pipe is not coupled to the main body by a fastening screw or bolt, but is firmly assembled by simple sliding fastening of the male and female engaging holes to the fastening holes of the main body, , It is easy to change the customized flow path according to the flow direction in the field.

In other words, the coupling protrusion structure of the coupling pipe is equally applied to the motor coupling plate, so that the motor coupling plate can be installed and replaced, and the variable coupling can be installed according to the change of the channel.

Once again, the main body 100 having the lower case 110 and 120, the partition wall 140, the fastening hole 160, the cover plate 170 and the cover 180, and the mounting recess 182 ) And the connecting pipe is injection-molded by EPP (expanded polypropylene) resin rather than metal sheet to prevent corrosion (rust), suppress noise and vibration, and heat exchange efficiency This is a significant improvement not only in handling performance but also in productivity.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

100 ... body 110 ... upper case
120 ... lower case 130 ... fastening plate
140 ... < / RTI >
200 ... Heating element 300 ... Class, exhausting fan
600 ... maintenance opening and closing plate 610 ... fastening screw
700 ... reinforcement bracket 710 ... incision groove
800 ... PCB rib case ribs
810 ... insertion groove 900 ... PCB shield plate
910 ... insertion projection 920 ... insertion hole
921 ... Watch window

Claims (5)

The main body 100 is formed with the upper and lower cases 110 and 120 divided into two parts and assembled by the clamping plate 130. The main body 100 has a heating element 200 coupled to the heating element 200, The cross flow passage 150 is formed by the partition walls 140 corresponding to the respective corners of the heat transfer element 200 when the heat transfer element 200 is coupled to the main body 100. In the cross flow passage 150, And a coupling hole 160 penetrating through the cross flow path 150 is formed on the outer circumferential surface of the main body 100 in the one direction and the other direction so that the detachable coupling pipe motor coupling plate And the lid 180 for the heating element is formed to be symmetrical with respect to each other so that the mounting groove 182 is opened and closed on each side of the upper and lower cases 110 and 120 of the main body 100. [ The main body 100 having the lower case 110 and the upper case 120, the partition 140, the coupling hole 160, According to (foamed polypropylene Expanded Poly Propylene) may foamed polypropylene such that the injection molding of a resin material of the terrain the total enthalpy heat exchanger, plywood 170 and the cover 180, mounting groove 182 are all EPP
The maintenance opening and closing plate 600 is fixed on the surface of the upper and lower cases 110 and 120 of the main body corresponding to the positions of the feed and exhaust fans 300 without interfering with the heating element cover 180, And is detachably attached to the upper and lower cases 110 and 120 so that it can be exchanged, exchanged, and fitted and removed without separating the upper and lower cases 110 and 120,
When the upper and lower cases 110 and 120 are assembled and joined together, a reinforcing bracket 700 having a cross-sectional shape of '⊂' is fitted on the outer circumferential surface of the fastening plate 130, The incision groove 710 is formed to correspond to the mounting or receiving groove 131 of the fastening plate 130 and the reinforcing bracket 700 is formed on the fastening plate 130 And the plurality of fastening plates (130) are vertically pressed and fixed by penetrating the fastening bolts (720) on one side of the surface when the fastening bolts (7) are fitted. delete The PCB case according to claim 1, wherein the upper and lower cases (110, 120) of the main body are symmetrical with respect to the up and down directions to form a protruded rib for a PCB case (800) Wherein a plurality of fitting grooves 810 are formed in the fitting groove 810 and a PCB protecting plate 900 having a fitting protrusion 910 is fitted to the fitting groove 810 in a male- Foamed polypropylene resin type total heat exchanger improved workability. The method of claim 3, wherein the PCB protection plate (900) is formed with a through hole (920) having a monitoring window (921) on a surface thereof. Exchanger. The motor coupling plate (170) according to claim 4, wherein the motor coupling plate
A flange 171 is provided on the outer peripheral surface of the through-type flange 171 so as to correspond to the fitting jaw 161 formed in the fastening hole 160 of the main body, And a screw fastening portion 173 protruding in an orthogonal direction is formed on the side contacting the inlet and outlet flanges 300 and 300 so that the screw fastening portion 173 is screwed Wherein the foamed polypropylene resin type total enthalpy heat exchanger has improved assembly and workability.

Images