KR102607310B1 - Heat exchanger having filter module with heating element - Google Patents

Abstract

A total heat exchanger equipped with a heating element filter module is disclosed. A total heat exchanger equipped with a heating element filter module according to the present invention includes a main body; and a heating element filter module provided inside the main body and applying an electric field to filter foreign substances contained in external air flowing into the main body and selectively heat the external air.

Description

Total heat exchanger equipped with a heating element filter module {HEAT EXCHANGER HAVING FILTER MODULE WITH HEATING ELEMENT}

The present invention relates to a total heat exchanger equipped with a heating element filter module.

As the amount of time spent indoors, such as in residential facilities, public buildings, underground facilities, and offices, increases, interest in indoor air quality is increasing, considering the impact of indoor air on the human body.

The main factors that pollute indoor air quality are known to be particulate matter such as fine dust, asbestos, and dirt, and gaseous substances such as carbon dioxide, formaldehyde, and volatile organic compounds.

In order to remove the above-mentioned indoor pollutants, conventionally, a method of exchanging indoor air with external air through mechanical ventilation using a natural ventilation or air conditioning system is mainly used. Mechanical ventilation using an air conditioning system mainly uses a total heat exchanger that supplies outside air and exhausts indoor air while maintaining the indoor air temperature.

However, when a HEPA filter is used to increase the dust collection efficiency of a total heat exchanger, there is a problem that the filter replacement cycle is shortened due to high pressure loss, and a lot of wind pressure is applied to the filtering, which reduces air volume and increases power consumption.

[Document 1] Republic of Korea Patent No. 10-0688610 (announced on March 2, 2007)

Therefore, the technical problem to be solved by the present invention is to provide a total heat exchanger equipped with a heating element filter module that can improve dust collection efficiency, extend the life of the filter, and reduce power consumption.

According to one aspect of the present invention, a main body; and a heating element filter module provided inside the main body and applying an electric field to filter foreign substances contained in external air introduced into the main body and selectively heat the external air. A total heat exchanger equipped with a heating element filter module. may be provided.

The heating element filter module includes a first frame made of insulating material coupled to the edge of a metal mesh network; A second frame laminated at the rear of the first frame and coupled to the edge of the planar heating element coated with conductive ink; a first filter module disposed between the first frame and the second frame and filtering foreign substances contained in external air; And a power supply connected to the metal mesh network and the conductive ink to apply a high voltage to the metal mesh network to generate an electric field in the first filter module, and connected to the planar heating element to heat the planar heating element. there is.

The first filter module includes a pocket-shaped medium filter; And it may include a first filter frame coupled to the edge of the medium filter.

The metal mesh network may be formed into a pocket shape corresponding to the shape of the medium filter.

The metal mesh network may be formed in a plate shape.

The first frame, the first filter frame, and the second frame may be detachably coupled to each other.

The heating element filter module may further include a second filter frame stacked in front of the first frame and coupled to the edge of the pre-filter.

The conductive ink may include carbon nanotube ink, polymer ink, copper ink, silver ink, and nanowire ink.

It is provided inside the main body and may further include a heat exchange unit that exchanges heat between external air introduced into the main body and indoor air introduced into the main body.

The heating element filter module is provided in an external air inflow passage through which external air introduced into the main body moves to the heat exchange unit, and may be detachably coupled to the heat exchange unit.

an external air inlet provided on one side of the main body through which external air flows into the main body; an external air outlet provided on the other side of the main body through which external air introduced into the main body is discharged into the room; an indoor air inlet provided on the other side of the main body to face the external air inlet and through which indoor air flows into the main body; And it may further include an indoor air outlet provided on one side of the main body opposite to the external air outlet and through which indoor air introduced into the main body is discharged to the outside.

It may further include an indoor air filter module that is provided in an indoor air inflow passage through which indoor air flowing into the main body moves to the heat exchange unit and is detachably coupled to the heat exchange unit to filter out foreign substances contained in the indoor air. .

Embodiments of the present invention can improve dust collection efficiency for foreign substances contained in external air by applying an electric field.

In addition, embodiments of the present invention can improve the lifespan of the filter by improving the porosity of foreign substances collected on the filter surface by an electric field and lowering the pressure loss.

In addition, the embodiment of the present invention can lower power consumption because pressure loss is lowered.

In addition, the embodiment of the present invention can reduce heating costs by heating outside air and then flowing it into the room, especially in winter.

Figure 1 is a perspective view showing a total heat exchanger equipped with a heating element filter module according to the present invention.
Figure 2 is a partial cutaway view showing a total heat exchanger equipped with a heating element filter module according to the present invention.
Figure 3 is a diagram showing the configuration of a heat exchanger according to the present invention.
Figure 4a is a perspective view showing an embodiment of a heating element filter module according to the present invention.
Figure 4b is an exploded perspective view showing an embodiment of the heating element filter module according to the present invention.
Figure 5a is a perspective view showing another embodiment of the heating element filter module according to the present invention.
Figure 5b is an exploded perspective view showing another embodiment of the heating element filter module according to the present invention.
Figure 6 is a graph showing the amount of dust collected and pressure loss in the heating element filter module according to the present invention.
Figure 7 is a diagram showing dust collected in the form of linear branches on the filter when an electric field is applied to the heating element filter module according to the present invention.
Figure 8 is a photograph showing the form in which dust is collected when no electric field is applied.
Figure 9 is a photograph showing the form in which dust is collected when an electric field is applied according to the present invention.
Figure 10 is a graph showing the dust collection amount and initial collection efficiency in the heating element filter module according to the present invention.

In order to fully understand the present invention, its operational advantages, and the objectives achieved by practicing the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the attached drawings. The same reference numerals in each drawing indicate the same member.

Figure 1 is a perspective view showing a total heat exchanger equipped with a heating element filter module according to the present invention, Figure 2 is a partial cutaway view showing a total heat exchanger equipped with a heating element filter module according to the present invention, and Figure 3 is a heat exchanger according to the present invention. It is a drawing showing the configuration of the unit, Figure 4a is a perspective view showing an embodiment of the heating element filter module according to the present invention, Figure 4b is an exploded perspective view showing an embodiment of the heating element filter module according to the present invention, and Figure 5a is a perspective view showing an embodiment of the heating element filter module according to the present invention. It is a perspective view showing another embodiment of the heating element filter module according to the present invention, Figure 5b is an exploded perspective view showing another embodiment of the heating element filter module according to the present invention, and Figure 6 is a dust collection in the heating element filter module according to the present invention. It is a graph showing the amount and pressure loss, and Figure 7 is a diagram showing the dust collected in the form of linear branches on the filter when an electric field is applied to the heating element filter module according to the present invention, and Figure 8 is a diagram showing the dust collected in the form of linear branches when the electric field is not applied to the heating element filter module according to the present invention. A photograph showing the form in which dust is collected, Figure 9 is a photograph showing the form in which dust is collected when an electric field is applied according to the present invention, and Figure 10 is a photograph showing the dust collection amount and the dust collection amount in the heating element filter module according to the present invention. This is a graph showing the initial collection efficiency.

Referring to FIGS. 1 to 5B, the total heat exchanger 100 equipped with the heating element filter module 130 according to the present invention includes a main body 110, a heat exchanger 120 provided inside the main body 110, and a main body 110. It is provided inside the 110 and includes a heating element filter module 130 that applies an electric field to filter foreign substances contained in the external air flowing into the main body 110 and heats the external air.

As shown in Figures 1 and 2, the main body 110 according to this embodiment has an accommodating space inside which the heat exchanger 120 and the heating element filter module 130 are accommodated. In this embodiment, the main body 110 is shown in a rectangular parallelepiped shape, but the scope of the present invention is not limited thereto.

The main body 110 has a heat exchange unit 120 installed at the center, and partition walls (W) are installed to divide the space for the inflow and outflow of external air and the inflow and outflow of indoor air. By means of a plurality of partition walls (W), the main body 110 may be provided with an external air inlet space (S1), an external air outlet space (S2), an indoor air inlet space (S3), and an indoor air outlet space (S4). .

In addition, an external air inlet 111 is provided on one side of the main body 110 through which external air flows into the main body 110, and on the other side of the main body 110, an external air inlet 111 is provided into the interior of the main body 110. An external air discharge port 112 is provided. In addition, on the other side of the main body 110, an indoor air inlet 115 is provided opposite to the external air inlet 111, through which indoor air flows into the main body 110, and on one side of the main body 110, an external air outlet ( Opposite to 112), an indoor air outlet 116 is provided through which indoor air flowing into the main body 110 is discharged to the outside.

The outside air moves along the outside air inlet flow path that communicates with the outside air inlet 111, the outside air inlet space (S1), and the heat exchange unit 120, and flows through the heat exchange unit 120, the outside air outlet space (S2), and the outside air. The outlet 112 moves along the communicating external air discharge path.

In addition, the indoor air moves along the indoor air inflow path that communicates with the indoor air inlet 115, the indoor air inlet space (S3), and the heat exchanger 120, and flows between the heat exchanger 120, the indoor air outlet space (S4), and the indoor air. The air outlet 116 moves along the communicating indoor air discharge path. Outside air and indoor air move in opposite directions.

In addition, a first fan (not shown) is provided inside the main body 110 adjacent to the outside air inlet 111 to introduce outside air, and is provided inside the main body 110 adjacent to the indoor air inlet 115 to provide A second fan (not shown) is provided to introduce air.

As shown in FIGS. 2 and 3, the heat exchange unit 120 according to this embodiment is provided at the center of the main body 110, and external air flowing into the main body 110 and the inside of the main body 110 are used. Heat from the incoming indoor air is exchanged with each other.

The heat exchange unit 120 allows the heat of the outside air to be transferred to the indoor air when the temperature of the outside air is higher than the temperature of the indoor air, and when the temperature of the indoor air is higher than the temperature of the outside air, the heat of the indoor air is transferred to the outside. Let it move into the air.

As shown in FIG. 3, the heat exchange unit 120 has a structure in which a multi-layer heat exchange layer including an indoor air passing part 121 and an external air passing part 123 is formed, and the indoor air passing part 121 is The indoor air moving along and the outside air moving along the outside air passing part 123 may move in directions perpendicular to each other.

As shown in FIGS. 4A to 5B, the heating element filter module 130 according to this embodiment is provided inside the main body 110 and applies an electric field to filter out the outside air contained in the main body 110. Filters out foreign substances and selectively heats the outside air.

Previously, a HEPA filter was used to increase the dust collection efficiency of the total heat exchanger, but due to the high pressure loss caused by the HEPA filter, the replacement cycle of the filter is shortened and a lot of wind pressure is applied to the filtering, which reduces the air volume and increases power consumption. there was. Accordingly, in this embodiment, even when using a minimal filter by applying an electric field, the dust collection efficiency can be improved as much as when using a HEPA filter, and the lifespan of the filter can be improved and power consumption reduced by lowering the pressure loss. In addition, in this embodiment, outdoor air is heated especially in winter to allow warm air to flow indoors, thereby reducing heating costs.

The heating element filter module 130 is disposed between the first frame 131, the second frame 133 stacked behind the first frame 131, and the first frame 131 and the second frame 133. It includes a first filter module 135 and a power supply unit that supplies power to generate an electric field. The first frame 131, the first filter module 135, and the second frame 133 may be sequentially stacked and detachably coupled.

In addition, the heating element filter module 130 is provided in the external air inflow passage through which external air flowing into the main body 110 moves to the heat exchange unit 120, and may be detachably coupled to the heat exchange unit 120.

The first frame 131 may be made of insulating resin such as polytetrafluoroethylene (PTFE).

The first frame 131 is coupled to the edge of the metal mesh network 132 made of conductive material. The mesh size of the metal mesh network 132 may be 1.8 mm x 1.8 mm, and the wire forming the mesh may have a diameter of 0.1 mm.

The second frame 133 is coupled to the edge of the planar heating element 134 coated with conductive ink (not shown). The planar heating element 134 generates heat when power is supplied, and can be heated while external air passes through the planar heating element 134.

Additionally, conductive ink may be coated on the wire constituting the planar heating element 134. Conductive ink includes carbon nanotube ink, polymer ink, copper ink, silver ink, or silver nanowire ink.

Conductive ink is coated on the planar heating element 134 to apply an electric field to the metal mesh net 132 and the medium filter 136 of the first filter module 135, which will be described later, disposed between.

The first filter module 135 is stacked between the first frame 131 and the second frame 133 and filters foreign substances contained in the external air.

The first filter module 135 includes a pocket-shaped medium filter 136 and a first filter frame 137 coupled to the edge of the medium filter 136. Additionally, the first frame 131, the first filter frame 137, and the second frame 133 may be sequentially stacked and detachably coupled to each other.

When the medium filter 136 has a pocket shape, the metal mesh network 132 may be formed in a pocket shape corresponding to the shape of the medium filter 136 (see FIG. 4B) or may be formed in a plate shape (FIG. 5B) reference).

As described above, the power supply unit is connected to the metal mesh network 132 and the conductive ink to apply an electric field to the medium filter 136, and is connected to the first power supply unit 138, which applies a high voltage, and the planar heating element 134. It includes a second power supply unit 139 that supplies power to heat the planar heating element 134.

The second power supply unit 139 can selectively supply power to the planar heating element 134, and can reduce heating costs by heating the outside air and allowing it to flow into the room, especially in winter.

In addition, although not shown, the heating element filter module 130 may further include a second filter frame (not shown) stacked in front of the first frame 131 and coupled to the edge of the pre-filter (not shown). The pre-filter pre-filters dust with large particle sizes prior to the medium filter (136).

Meanwhile, although not shown, the heating element filter module 130 according to the present invention is provided in the indoor air inflow passage through which the indoor air flowing into the main body 110 moves to the heat exchange unit 120, and the heat exchange unit 120 It may further include an indoor air filter module 140 that is detachably coupled to and filters foreign substances contained in the indoor air.

The indoor air filter module 140 includes a third filter frame (not shown) coupled to the rim of the pre-filter (not shown), and a fourth filter frame (not shown) laminated at the rear of the third filter frame and coupled to the rim of the medium filter 136. A filter frame (not shown) may be included.

With reference to FIGS. 6 to 10, the improvement in pressure loss and dust collection efficiency by the total heat exchanger 100 equipped with the heating element filter module 130 according to the present invention is as follows.

Figure 6 shows that the medium filter 136 disposed between the metal mesh net 132 and the planar heating element 134 is a non-electret filter module, and the dust particle size (d _vm ) is 4㎛. This is a graph showing the dust loaded mass and pressure loss (Pa) in the case of and 8㎛.

It can be seen that the dust collection amount (g) is relatively improved when an electric field is applied for the same pressure loss of 375 (Pa).

When the dust particle size (d _vm ) is 4㎛, the pressure loss is 375 (Pa), the dust collection amount is improved by 22% from 410g to 527g, and when the dust particle size (d _vm ) is 8㎛, the pressure loss is 375(Pa). In the case of loss 375 (Pa), the dust collection amount improved by 19% from 312g to 386g. Therefore, by applying an electric field to the medium filter 136, dust collection efficiency can be improved to the level of a HEPA filter by electric polarization force.

As shown in FIG. 7, when the strength of the electric field increases (FIG. 7(a) to FIG. 7(C)), dust is collected in the medium filter 136 in the form of linear branches, compared to the case where the electric field is not applied. Porosity is improved and pressure loss can be lowered. Accordingly, the lifespan of the filter can be increased and power consumption can be reduced.

In addition, Figure 8 is a photograph showing dust collected in the medium filter 136 when no electric field is applied, and the dust layer in which dust is accumulated is formed densely. In contrast, Figure 9 is a photograph showing the dust layer collected in the medium filter 136 when an electric field is applied, showing that the dust layer is collected in an agglomerated form. In this way, when an electric field is applied, dust coagulates and is collected on the surface of the medium filter 136, thereby improving porosity, lowering pressure loss, and increasing dust collection efficiency.

In addition, Figure 10 shows that the medium filter 136 disposed between the metal mesh net 132 and the planar heating element 134 is a non-electret filter module, and the dust particle size (d _vm ) is 4. This is a graph showing the dust loaded mass and collection efficiency (%) for ㎛ and 8㎛.

It can be seen that the initial collection efficiency (%) is relatively improved when an electric field is applied.

When the dust particle size (d _vm ) was 4㎛, the initial collection efficiency (%) improved by 13% from 85.2% to 98.5%, and when the dust particle size (d _vm ) was 8㎛, the initial collection efficiency (%) was improved by 13%. %) improved by 10% from 89.2% to 99.5%.

As such, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the present invention. Accordingly, such modifications or variations should be considered to fall within the scope of the claims of the present invention.

100: Heat exchanger equipped with a heating element filter module 110: Main body
120: heat exchange unit 130: heating element filter module
131: first frame 132: metal mesh net
133: second frame 134: planar heating element
135: first filter module 136: medium filter
137: First filter frame

Claims (12)

main body; and
It is provided inside the main body and includes a heating element filter module that applies an electric field to filter foreign substances contained in the external air introduced into the main body and selectively heats the external air,
The heating element filter module,
A first frame made of insulating material coupled to the edge of the metal mesh network;
A second frame laminated at the rear of the first frame and coupled to the edge of the planar heating element coated with conductive ink;
a first filter module disposed between the first frame and the second frame and filtering foreign substances contained in external air; and
A heating element filter including a power supply unit connected to the metal mesh network and the conductive ink to apply a high voltage to the metal mesh network to generate an electric field in the first filter module, and connected to the planar heating element to heat the planar heating element. A total heat exchanger equipped with a module. According to paragraph 1,
The first filter module,
Pocket-shaped medium filter; and
A total heat exchanger equipped with a heating element filter module including a first filter frame coupled to the rim of the medium filter. According to paragraph 2,
A total heat exchanger with a heating element filter module in which the metal mesh net is formed into a pocket shape corresponding to the shape of the medium filter. According to paragraph 2,
The metal mesh network is a total heat exchanger equipped with a heating element filter module formed in a plate shape. According to paragraph 2,
A total heat exchanger including a heating element filter module in which the first frame, the first filter frame, and the second frame are detachably coupled to each other. According to paragraph 2,
The heating element filter module,
A total heat exchanger with a heating element filter module that is stacked in front of the first frame and further includes a second filter frame coupled to the edge of the pre-filter. According to paragraph 1,
The conductive ink is a total heat exchanger equipped with a heating element filter module containing carbon nanotube ink, polymer ink, copper ink, silver ink, and nanowire ink. According to paragraph 1,
A total heat exchanger with a heating element filter module provided inside the main body and further comprising a heat exchanger that exchanges heat between external air introduced into the main body and indoor air introduced into the main body. According to clause 8,
The heating element filter module,
A total heat exchanger including a heating element filter module provided in an external air inflow passage through which external air flowing into the main body moves to the heat exchange unit and detachably coupled to the heat exchange unit. According to clause 8,
an external air inlet provided on one side of the main body through which external air flows into the main body;
an external air outlet provided on the other side of the main body through which external air introduced into the main body is discharged into the room;
an indoor air inlet provided on the other side of the main body to face the external air inlet and through which indoor air flows into the main body; and
A total heat exchanger with a heating element filter module provided on one side of the main body to face the external air outlet and further comprising an indoor air outlet through which indoor air introduced into the main body is discharged to the outside. According to clause 8,
A heating element filter further comprising an indoor air filter module provided in an indoor air inflow passage through which indoor air flowing into the main body moves to the heat exchange unit and detachably coupled to the heat exchange unit to filter out foreign substances contained in the indoor air. A total heat exchanger equipped with a module. delete

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