KR20120065163A - Ventilation system of indoor used in subterranean heat and heat exchanger - Google Patents

Abstract

PURPOSE: An indoor ventilation equipment using geothermal heat and a heat exchanger are provided to reduce fuel consumption due to operating a heating device through using geothermal heat. CONSTITUTION: An indoor ventilation equipment using geothermal heat comprises an intake part(110), an intake passage(120), a heating passage(130), a supply passage(140), and a heat exchanger(150). The intake part is installed to be exposed and sucks the outside air. The intake passage moves the sucked air through underground. The heating passage transfers the geothermal heat to the sucked outside air. The supply passage connected to the heating passage supplies the heated air to indoor space. The heat exchanger supplies the outside air to indoor space and discharges the indoor air to outside.

Description

Ventilation system and heat exchanger using geothermal heat {VENTILATION SYSTEM OF INDOOR USED IN SUBTERRANEAN HEAT AND HEAT EXCHANGER}

The disclosed technique relates to an indoor ventilation system, and more particularly to an indoor ventilation system using geothermal heat and a heat exchanger used for the same.

In winter, the room is heated in order to comfort the interior space for giving or office work, and the heating device for this heating is installed. Most heating devices are heated by circulating the indoor air in a state where the outside and the inside are cut off. Since the heating is performed only by air circulation in an enclosed space, if the heating is continued, the indoor air gradually becomes cloudy Can cause bronchial disease or headaches in people living in the country.

Expensive ventilation systems are installed and operated in large buildings. However, it is difficult to install expensive ventilation systems in private houses or small buildings, and most of the buildings are ventilated by opening windows.

When the window is opened for indoor ventilation, the outside cold air is introduced into the inside and the inside of the hot air is discharged to the outside, the temperature of the room is lowered and the heating apparatus must be operated again. Therefore, excessive energy loss occurs due to the operation of the heating apparatus, resulting in waste of resources.

Among the embodiments, the indoor ventilation system using geothermal heat includes an intake section, an intake passage, a heating passage, a supply passage and a heat exchanger. The intake unit is installed to be exposed to the ground and absorbs outside air. The intake passage moves the outside air absorbed by the intake section into the ground. The heating passage is connected to the intake passage and is inclined upwardly, and heats outside air using geothermal heat. The supply passage supplies the outside air heated in the heating passage to the room. The heat exchanger supplies the outside air supplied through the supply passage to the room and discharges the indoor air to the outside. In one embodiment, the heating passage may be installed in the upper direction to have an inclination of 1 ° to 89 ° with respect to the horizontal plane in the portion connected to the intake passage. Preferably, the portion connected to the intake passage may be installed in an upward direction to have an inclination of 5 ° to 15 ° based on a horizontal plane. In one embodiment, the heating passage may include at least two first passages that are repeatedly installed to be inclined upward and a second passage that is alternately connected to neighboring first passages of the at least two first passages. Can be. For example, the first passage may be installed to be inclined horizontally along the moving direction of the outside air. As another example, the second passage may be installed to be inclined horizontally along the moving direction of the outside air. In one embodiment, the heating passage may be a geothermal absorption rib is installed on the outside. In one embodiment, the supply passage may include a geothermal absorption tube extending in the heating passage buried in the ground and a thermal barrier tube extending to the geothermal absorption tube to protrude to the ground. For example, the heat shield tube may be installed as a double tube of the inner tube and the outer tube. As another example, the geothermal heat absorption tube may be provided with a geothermal heat absorption rib.

In embodiments, heat exchangers used in geothermal indoor ventilation systems exchange thermal energy across air having different temperatures. In one embodiment, the heat exchanger includes first and second inlets, first and second outlets, and a heat exchanger. The first and second inlets are respectively introduced with air of different temperatures. The first and second outlets are connected to the first and second inlets, respectively. The heat exchanger connects the first inlet and the first outlet. In one embodiment, the heat exchange unit is the first and second so that the virtual first connecting line connecting the first inlet and the first outlet, and the virtual second connecting line connecting the second inlet and the second outlet. Inlets and first and second outlets may be formed. In another embodiment, the heat exchange unit is a first connection pipe connecting the first inlet and the first outlet and the second connection connecting the second inlet and the second outlet, the second connection is installed to surround the first connector It may include a tube.

1 is a view illustrating an indoor ventilation system using geothermal heat according to an embodiment of the disclosed technology.
2 is a view for explaining an example of the heating passage of FIG.
3 is a view for explaining another example of the heating passage of FIG.
4 is a view for explaining another example of the heating passage of FIG.
5 is a view for explaining an example of the supply passage of FIG.
6 is a view for explaining an example of the heat exchanger of FIG.
7 is a view for explaining another example of the heat exchanger of FIG. 1.

The description of the disclosed technique is merely an example for structural or functional explanation and the scope of the disclosed technology should not be construed as being limited by the embodiments described in the text. That is, the embodiments may be variously modified and may have various forms, and thus the scope of the disclosed technology should be understood to include equivalents capable of realizing the technical idea.

Meanwhile, the meaning of the terms described in the present application should be understood as follows.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It should be understood that the term "and / or" includes all possible combinations from one or more related items. For example, the meaning of "first item, second item and / or third item" may be presented from two or more of the first, second or third items as well as the first, second or third item It means a combination of all the items that can be.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, it should be understood that no component exists. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present application.

1 is a view illustrating an indoor ventilation system using geothermal heat according to an embodiment of the disclosed technology.

Referring to FIG. 1, the indoor ventilation system 100 using geothermal heat includes an intake unit 110, an intake passage 120, a heating passage 130, a supply passage 140, and a heat exchanger 150.

The intake unit 110 is installed to be exposed to the ground, and outside air flows through the intake unit 110. In one embodiment, the intake portion 110 may be formed by bending the end portion toward the ground to prevent the inflow of rain water, snow and / or foreign matter.

The intake passage 120 moves the outside air absorbed by the intake unit 110 to the ground. In one embodiment, the intake passage 120 may insulate at a portion close to the ground. For example, the intake passage 120 may attach a separate heat insulator. As another example, the intake passage 120 may be formed in a dual structure.

The heating passage 130 raises the temperature of the introduced outside air by using geothermal heat. In one embodiment, it is connected to the intake passage 120 and may be installed to be inclined upward. For example, the heating passage 130 may be installed in an upper direction (supply passage side direction) to have an inclination of 1 ° to 89 ° with respect to the horizontal plane at a portion connected to the intake passage 120. Preferably, the heating passage 130 may be installed to have an inclination of 5 ° to 15 ° based on a horizontal plane at a portion connected to the intake passage 120.

The supply passage 140 supplies the outside air heated in the heating passage 130 to the room. In one embodiment, the supply passage 140 may be insulated in a portion close to the ground. For example, the supply passage 140 may attach a separate heat insulating material. As another example, the supply passage 140 may be formed in a dual structure.

The heat exchanger 150 supplies the outside air supplied through the supply passage 140 to the room and discharges the indoor air to the outside. In one embodiment, the heat exchanger 150 may be provided with an openable door (not shown). Specific embodiments of the heat exchanger 150 will be described in more detail below.

In FIG. 1, assuming that the outside temperature is about minus 10 ° C., the underground temperature is about 20 ° C., and the room temperature is about 24 ° C., the outside air of minus 10 ° C. rises to about 0 ° C. while reaching the heating passage 130. And, it may be raised to about 17 ℃ passing through the heating passage 130.

The outside air heated to about 17 ° C. in the heating passage 130 may be raised to about 17 ° C. again in the heat exchanger 150 although the temperature is lowered as it moves to the ground.

Taking the temperature of each of these parts as an example, the flow of the outside air is as follows.

First, in the open state of the heat exchanger 150, outside air of about 17 ° C. is naturally introduced into the room due to convection, and indoor air of about 24 ° C. may be discharged to the outside through the heat exchanger 150.

Second, since the upper portion of the supply passage 140 is lower in temperature than the lower portion, outside air in the supply passage 140 should flow from the top to the bottom, but is introduced into the inside through the heat exchanger 150 by the first process. According to the density difference caused by the outside air, the outside air existing in the lower portion of the supply passage 140 may move upward.

Third, the outside air in the supply passage 140 may move from left to right for the same reason as the second process above. In addition, it is possible to move faster as geothermal heat gradually increases the temperature of the outside air. In particular, since the supply passage 140 is provided to have a constant inclination, the moving speed of the outside air can be further increased.

Fourth, as well as a phenomenon that the lower density of the intake passage 120 is lowered by the third process above, the outside air in the intake passage 120 is moved from the top to the bottom, not only by the temperature difference between the top and the bottom of the intake passage 120. Can be.

Fifth, when the density of the upper portion of the intake passage 120 is lowered by the fourth process, the outside air may naturally be absorbed into the intake port 110 even without a separate device (for example, a motor fan). In particular, since the flow of the outside air for each passage is increased due to the inclination of the heating passage 130, the outside air can be smoothly introduced into the intake port (110).

Therefore, it is possible to induce the natural convection by the temperature difference and the density difference to introduce the outside air into the room.

2 is a view for explaining an example of the heating passage of FIG.

Referring to FIG. 2, the heating passage 130 may be formed in a zigzag shape. In one embodiment, the heating passage 1300 may include a first passage 210 installed in the horizontal direction and a second passage 220 installed in the longitudinal direction.

The first passage 210 may be installed horizontally, and the second passage 220 may be installed to be inclined. For example, the first passage 210 is individually installed horizontally, but may be repeatedly installed to be inclined upwardly as a whole. In other words, the first passage 210 installed at the rear (the upper right direction in FIG. 2) may be installed at a position higher than the first passage 210 installed at the front (the lower left direction in FIG. 2).

3 is a view for explaining another example of the heating passage of FIG.

A plurality of geothermal absorption ribs 310 may be installed outside the first passage 210 of the heating passage 130 installed as shown in FIG. 2. In one embodiment, the geothermal absorption rib 310 may be formed in a plate shape. For example, the geothermal absorption rib 310 may be installed to be staggered with respect to the neighboring first passage 210.

The geothermal absorption rib 310 may increase the area in contact with the ground to absorb more geothermal heat and supply the geothermal heat to the first passage 210. In one embodiment, the geothermal absorption rib 310 may also be installed in the second passage (220).

4 is a view for explaining another example of the heating passage of FIG.

Referring to FIG. 4, the heating passage 130 may be installed to be inclined as well as the second passage 220. In an embodiment, the inclination θ1 of the first passage 210 may be the same as the inclination θ2 of the second passage 220. In another embodiment, the sum of the inclination θ1 of the first passage 210 and the inclination θ2 of the second passage 220 may be equal to the overall inclination θ of FIG. 1.

5 is a view for explaining an example of the supply passage of FIG.

Referring to FIG. 5, the supply passage 140 extends to the heating passage 130 and includes a geothermal absorption tube 510 embedded in the ground and a thermal insulation tube 520 extending to the geothermal absorption tube 510 and protruding to the ground. It may include.

The geothermal heat absorption tube 510 may be provided with a geothermal heat absorption rib 511. In one embodiment, the geothermal heat absorption rib 511 may be formed large in the lower geothermal heat. In another embodiment, the geothermal absorption rib 511 may be formed small at the upper geothermal heat. For example, the geothermal heat absorbing rib may be repeatedly formed in a ring shape 511 along the outer surface of the geothermal heat absorbing tube 510 in the vertical direction of the geothermal heat absorbing tube 510. As another example, the geothermal heat absorbing rib may be formed in a plate shape 512 on the outer surface of the geothermal heat absorption tube 510 to be parallel to the geothermal heat absorption tube 510.

The heat shield tube 520 may be formed as a double tube of the inner tube 521 and the outer tube 522. In one embodiment, the space 523 between the inner tube 521 and the outer tube 522 may be formed in a vacuum. In another embodiment, the space 523 may be filled with a heat insulator (not shown).

The supply passage 140 described in FIG. 5 may be applied to the intake passage 120 in the same manner.

6 is a view for explaining an example of the heat exchanger of FIG.

Referring to FIG. 6, the heat exchanger 150 includes an outside air inlet (first inlet) 611 connected to the supply passage 140, an outside air supply unit (first outlet) 612 for supplying indoor air indoors, and indoor air. And the air inlet (second inlet) 613, the air inlet (second outlet) 614 and the air inlet 611 for discharging the indoor air introduced into the air inlet 613 to the outside and It may include a heat exchange unit 620 connecting the outside air supply unit 612. In one embodiment, the heat exchanger 620 may be formed in a coil shape. For example, a rib (not shown) may be further formed outside the heat exchanger 620 to absorb more of the heat energy of the bet. In one embodiment, the heat exchanger 150 is a virtual first connection line 651 connecting the first air inlet 611, which is the first inlet, and the outside air supply 612, which is the first outlet, and the second inlet, the inlet. The virtual second connection line 652 connecting the unit 613 and the internal air discharge unit 614, which is a second outlet, may be formed to intersect with each other. Therefore, the outside air moving the heat exchanger 620 may absorb the heat energy of the bet discharged through the heat exchanger 150.

In FIG. 6, reference numeral 610 denotes a body of the heat exchanger 150.

7 is a view for explaining another example of the heat exchanger of FIG. 1.

Referring to FIG. 7, the heat exchanger 720 may be formed as a double tube. In one embodiment, the second connecting pipe 722 connecting the first inlet naebu inlet 613 and the second outlet naebu discharge 614, the first air inlet 611 and the first inlet It may be installed to surround the outside of the first connecting pipe 721 connecting the external air supply unit 612 which is the first outlet. Therefore, the heat energy of the bet can be more efficiently absorbed into the outside air.

The disclosed technique may have the following effects. It is to be understood, however, that the scope of the disclosed technology is not to be construed as limited thereby, as it is not meant to imply that a particular embodiment should include all of the following effects or only the following effects.

An indoor ventilation system and a heat exchanger using geothermal heat according to an embodiment may minimize energy consumption due to ventilation of an indoor space. It is possible to supply the indoor air by raising the temperature of the outside air close to the room temperature by using geothermal heat, and to supply the heat energy contained in the indoor air discharged to the outside to the incoming outside air.

In addition, the indoor ventilation system and the heat exchanger using geothermal heat according to an embodiment can ventilate the indoor space only with a simple construction. This is because by ventilating the indoor air by the natural convection method by the temperature difference and the density difference, no separate equipment for air circulation is required.

In addition, the heat exchanger of the indoor ventilation system using geothermal heat according to an embodiment is easy to install and very easy to maintain. This is because an efficient heat energy exchange can be achieved with a simple structural design.

In addition, the indoor ventilation system and the heat exchanger using geothermal heat according to an embodiment may not damage the natural landscape. This is because most configurations for indoor ventilation are installed indoors and underground.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the following claims It can be understood that

Claims (15)

An intake unit installed to be exposed to the ground and absorbing outside air;
An intake passage for moving the outside air absorbed by the intake section to the ground;
A heating passage connected to the intake passage and inclined upwardly to transmit geothermal heat to outside air;
A supply passage for supplying the outside air heated in the heating passage to the room; And
An indoor ventilation system using geothermal heat including a heat exchanger for supplying the outside air supplied through the supply passage to the interior and exhausting the indoor air to the outside. The method of claim 1, wherein the heating passage
Indoor ventilation system using geothermal heat, characterized in that installed in the upper direction to have a slope of 1 ° to 89 ° with respect to the horizontal plane in the portion connected to the intake passage. The method of claim 2, wherein the heating passage
Indoor ventilation system using geothermal heat, characterized in that installed in the upper direction to have a slope of 5 ° to 15 ° with respect to the horizontal plane in the portion connected to the intake passage. The method of claim 1, wherein the heating passage
At least two first passages that are repeatedly installed to be inclined upwardly; And
And a second passage installed to cross adjacent first passages among the at least two first passages. The method of claim 4, wherein the first passage is
The indoor ventilation system using geothermal heat, characterized in that the installation is inclined as a whole while being repeatedly installed horizontally along the moving direction of the outside air. The method of claim 4, wherein the second passage is
Indoor ventilation system using geothermal heat, characterized in that the installation is inclined along the moving direction of the outside air. The method of claim 1, wherein the heating passage
An indoor ventilation system using geothermal heat, characterized in that a rib for geothermal absorption is installed outside. The method of claim 1, wherein the supply passage
A geothermal absorption tube extending in the heating passage and embedded in the ground; And
An indoor ventilation system using geothermal heat, characterized in that it comprises a heat shield tube protruding to the ground extending to the geothermal absorption tube. The method of claim 8, wherein the heat shield tube
Indoor ventilation system using geothermal heat, characterized in that installed in the inner pipe and the double pipe of the exterior. The method of claim 8, wherein the geothermal heat absorption tube
An indoor ventilation system using geothermal heat, characterized in that a rib for geothermal absorption is installed outside. The method of claim 1, wherein the heat exchanger
External air inlet connected to the supply passage:
An outdoor air supply unit supplying outdoor air indoors;
An indoor air inlet for introducing indoor air;
A bet discharge unit for discharging the indoor air introduced into the bet inlet to the outside; And
Indoor ventilation system using geothermal heat characterized in that it comprises a heat exchange unit for connecting the outside air inlet and the outside air supply. The indoor ventilation system using geothermal heat according to claim 11, wherein the heat exchange part is formed in a coil shape. In a heat exchanger exchanging heat energy by crossing air having different temperatures,
First and second inlets through which air at different temperatures is introduced;
First and second outlets connected to the first and second inlets, respectively; And
And a heat exchanger connecting the first inlet and the first outlet. The method of claim 13, wherein the heat exchanger
First and second inlets and first and second outlets such that the virtual first connecting line connecting the first inlet and the first outlet and the virtual second connecting line connecting the second inlet and the second outlet are intersected. Heat exchanger characterized in that is formed. The method of claim 13, wherein the heat exchange unit
A first connecting pipe connecting the first inlet and the first outlet; And
And a second connecting tube connecting the second inlet and the second outlet and surrounding the first connecting tube.

Images