KR101271554B1 - Ventilator prevented dew codensation by using of The Anti-dew Condensation Damper - Google Patents

Abstract

The present invention relates to a ventilation air supply device for preventing condensation by using a condensation prevention damper, and more specifically, in addition to the electric damper installed at the inlet of the ventilation air supply device, a condensation prevention damper having a heat insulating material attached to one side or both sides. At least one outlet side of the air supply fan and an outside of the electric damper are installed to form a sealed temperature difference buffer space therebetween to prevent direct contact between outside air and a large temperature difference when the air supply fan is not in operation, and on the inner or outer circumferential surface of the main body. It is characterized by providing a ventilation air supply device to prevent the condensation generated when the air supply fan is not operating by improving the insulation efficiency by attaching to surround the insulation and changing the structure of the dew condensation prevention damper.
The present invention for achieving the above object is in communication with each generation room of the building through the ceiling or indoor floor floor inside the building by opening the electric damper on the inlet side of the main body at the same time as the operation of the air supply fan built into the main body is opened. In the ventilation supply device for supplying air through the supply air supply pipe, the air supply fan is installed in front of the outlet 111 of the air supply fan 11 so that the main body 10 and the indoor air supply pipe 4 do not communicate with each other when the air supply fan is not operated. Condensation prevention damper 30 to be installed at least one spaced apart, and the second condensation prevention damper 40 is installed to be spaced apart from the electric damper 20 to the outside wall so that the outside and the electric damper 20 does not communicate when not in use ), But at least one of the electric damper 20, the anti-condensation damper 30 and the second anti-condensation damper 40 has a predetermined thickness on one side or both sides of the damper blades 21, 31, 41. Having heat insulating material (60) And in that by using a condensation prevention damper, it characterized in that the attachment by using a condensation preventing damper to prevent condensation prevent condensation.

Description

Ventilator prevented dew codensation by using of the Anti-dew Condensation Damper

The present invention relates to a ventilation air supply device for preventing condensation by using a condensation prevention damper, and more particularly, in addition to the electric damper installed in the inlet of the ventilation air supply device, a condensation prevention damper having a heat insulating material attached to one side or both sides. Installed at least one outlet side of the air supply fan and the outside of the electric damper so that the temperature difference buffer space is closed between the outside air and the bet that the temperature difference when the air supply fan is not operating directly (the term, created by the applicant, a large temperature difference In order to prevent condensation from occurring between the outside and the bet, I form a space intentionally enclosed therebetween, and attach it to the inner circumferential surface or the outer circumferential surface of the body so as to surround the insulation and change the structure of the anti-condensation damper. Ventilation air supply device for improving the efficiency to prevent condensation generated when the air supply fan is inactive A.

In general, ventilation in households in multi-unit buildings such as apartments, buildings, and the like is achieved through opening and closing of windows. In order to improve this problem, a separate ventilation system is installed for the ventilation of households in multi-unit houses and multi-unit buildings.

For example, as disclosed in the air supply system of the conventional ventilation system, referring to FIG. 1, the ceiling or the interior of a building may be supplied to supply the outside air of the building through the cap grill 107 by the operation of the air supply fan 101. The air supply pipe 102 installed through the bottom layer and the branch pipe 103 is connected to be installed to branch supply the external air supplied through the air supply pipe to each generation room (S) of the building and the branch pipe 103 end The air supply is provided through a diffuser 104 installed in the air supply, and the exhaust air is discharged directly to the vertical exhaust pipe 106 through the ventilation fan 105 of the conventionally installed bathroom. In order to prevent external air and dust from flowing into the room when the air supply device is not in use, an electric damper (110, MD damper) is provided at the inlet side of the air supply device provided with the air supply fan 101 to prevent external air and the interior. Block it.

However, the applicant continuously experiments and researches the conventional ventilation system, and the electric damper 110 is opened and the air supply fan 101 is driven during the operation of the air supply device 100 at a high speed into a room with a wide outside air. Condensation did not occur during inflow of air supply.

However, it has been found that when the air supply device 100 is not used, the electric damper 110 is sealed and the air supply fan 101 is not operated so that condensation may occur in a state in which air supply is stopped.

More specifically, as shown in FIG. 2, the electric damper 110 of the air supply device 100 provided with the air supply fan 101 has a thin damper blade 110a therebetween, and the outside air (28-33 ° C.) is hot in summer. ) And the cooled bet (18 ~ 24 ℃) will meet, and the cold outside air (0 ~ -13 ℃) and warm bet (18 ~ 23 ℃) will meet.

At this time, when the temperature difference between the outside air and the inside contacting the both sides with the thin damper blade 110a of the electric damper 110 increases, the humidity is saturated in the high-temperature air and passes through the dew point temp. Condensation (5, 結露) is generated, but may occur in the summer, but most of the winter, flows down along the damper blades (110a), stuck in the air supply device (100) or corroded inside the air supply pipe (102) 3) is overflowing in the air supply pipe 102 buried in the floor as shown in Figure 3, in this way condensation (5) in the air supply device 100 and the air supply pipe 102 is a variety of harmful fungi ( 6) is generated and the fungal bacteria (6) during the air supply has a problem that the fungal bacteria (6) in the house has been introduced into the room to take the air outside the air supply.

This dew condensation can also occur in the supply / exhaust system of the same ventilation system. However, in the air supply / exhaust system of the ventilation system, since the air supply and the exhaust operate simultaneously to discharge the indoor polluted air to the outside, the probability of propagating the fungus bacteria is relatively low.

In addition, the fungal bacteria 6 introduced into the room as described above have a harmful problem that is distributed throughout the room to induce fungus in many places, and also enters the body through the respiratory organs of the in-house.

The present invention has been developed to realize these problems and to improve them.

The present invention is devised to solve the above-described problems, and in addition to the electric damper installed in the inlet of the ventilation air supply device, a condensation prevention damper attached to one side or both sides of the condensation prevention damper side of the air supply fan and the electric damper Install at least one outside to form a sealed temperature difference buffer space between the outside of the air supply fan when the air supply fan is not in operation to prevent direct contact with the outside, and also to attach the insulation to the inner circumferential surface or the outer circumferential surface of the main body to prevent condensation It is an object of the present invention to provide a ventilation air supply device for improving condensation efficiency by changing the structure of the damper to prevent condensation generated when the air supply fan is inoperative.

The present invention for achieving the above object is the operation of the air supply fan in the main body at the same time the inlet side electric damper of the main body is opened and the outside air flows from the outside of the building through the ceiling or indoor floor floor of the building to communicate with each generation room of the building In the ventilating air supply device for supplying air through the air supply pipe is installed in the air supply, in front of the outlet 111 of the air supply fan 11 so that the main body 10 and the indoor air supply pipe (4) does not communicate when the air supply fan is not operating. By further provided with a condensation prevention damper 30 is installed to install one or more spaced apart; As the electric damper 20 and the condensation prevention damper 30 are sealed, the air supply for ventilation to prevent condensation by using a damping condensation damper, characterized by forming a temperature difference buffering space A1 partitioned in the space therebetween. The object is achieved by providing a device.

In addition, in the ventilation air supply device for preventing condensation by using the condensation prevention damper, at least one is spaced apart from the electric damper 20 to the outside so that the external and the electric damper 20 does not communicate when the air supply fan is not operating. By further comprising a second condensation preventing damper 40 is installed, the second temperature difference damping space (A2) partitioned in the space therebetween as the second condensation preventing damper 40 and the electric damper 20 is sealed It is desirable to form additionally.

In addition, in the ventilation air supply device for preventing condensation by using the condensation prevention damper, the condensation prevention damper 30 and the second condensation prevention damper 40 of the electric damper or air supply fan 11 driven by electricity. It is preferable that the BDD damper (Back Draft Damper) is automatically opened and closed by the pressure according to the operation.

In addition, in the ventilation air supply device for preventing condensation using the condensation prevention damper, at least one of the electric damper 20 and the condensation prevention damper 30 is on one side or both sides of the damper blades (21, 31). It is preferable that the heat insulating material 60 having a predetermined thickness is attached.

In addition, in the ventilation air supply device for preventing condensation by using the condensation preventing damper, at least one of the electric damper 20, the condensation preventing damper 30 and the second condensation preventing damper 40 is damper blade 21 It is preferable that a heat insulating material 60 having a predetermined thickness is attached to one side or both sides of the sides 31 and 41.

In addition, in the ventilation air supply device for preventing condensation using the dew condensation damper, the main body 10 is preferably attached to a heat insulating material 60 of a predetermined thickness so as to surround the inner circumferential surface or the outer circumferential surface.

The effects of the present invention are as follows.

In addition to the electric damper installed at the inlet of the ventilation air supply device, at least one condensation prevention damper with heat insulating material attached to one side or both sides is installed at the outlet side of the air supply fan and the outside of the electric damper. To form a closed temperature difference buffer space (invented by the applicant, intentionally closed space between them) to prevent condensation from occurring due to high temperature difference In addition, it is possible to provide a ventilation air supply device for attaching to wrap the heat insulating material on the inner circumferential surface or the outer circumferential surface of the main body and improve the heat insulation efficiency by changing the structure of the anti-condensation damper to prevent condensation generated when the air supply fan is inoperative. It is a useful invention.

1 is a schematic view showing a conventional ventilation air supply device
FIG. 2 is an enlarged view of the inside of part A of FIG.
3 is an enlarged cross-sectional view taken along line BB of FIG.
4 is a schematic view showing a first embodiment of a ventilation air supply apparatus to which the present invention is applied.
5 is a schematic view showing a modification of Embodiment 1 of a ventilation air supply apparatus to which the present invention is applied.
6 is a schematic view showing a second embodiment of a ventilation air supply apparatus to which the present invention is applied.
7 is a schematic view showing the configuration of the electric damper and the dew condensation prevention damper of the ventilation air supply device to which the present invention is applied.
Figure 8 is a schematic diagram and a picture showing the internal shape of the supply / exhaust device and the experimental apparatus used in the research experiment applying the present invention
Figure 9 is a schematic diagram showing the internal shape of the experimental apparatus used in the research experiment applied to the present invention
10 is a wet air map graph
11 is a dew point temperature table according to the change in room temperature and relative humidity
12 is a perspective view and a cross-sectional view showing a modification 1 of the ventilation air supply apparatus to which the present invention is applied.
13 is a perspective view and a cross-sectional view showing a modification 2 of the ventilation air supply apparatus to which the present invention is applied.

Hereinafter, the present invention will be described in detail with reference to preferred embodiments. It is to be understood, however, that the embodiments are illustrative of the invention in order that the invention may be better understood, and that the terms or words used should not be construed in a conventional or dictionary sense, It should be understood that the present invention should not be construed as being limited to the meanings and concepts consistent with the technical idea of the present invention based on the principle that the concept of the term can be appropriately defined in order to explain it by a method.

First, the general ventilation system opens the electric damper 20 installed on the side to block the outside air when the air supply fan 11 and the exhaust fan is driven, so that the outdoor air flows into the large space in the room by the air supply fan 11 at a high speed. As a result, even if the outside and the bet meets a large temperature difference, condensation does not occur.

Therefore, the present invention is intended to prevent the condensation generated when the operation of the air supply fan 11 or the exhaust fan 11 of the ventilation system is stopped and the electric damper 20 is closed.

(Example 1)

First, as shown in FIG. 4, Embodiment 1 of the present invention is a case of a ventilation air supply device having one inlet port 14 and three outlet ports 15, and the main body of the ventilation air supply device 1. An electric damper 20 is provided at the inlet 14 of the inlet 10, and a filter 12 and an air supply fan 11 are built in the inside, and a fan attachment wall 13 is disposed at the outlet 111 of the air supply fan 11. This is installed.

Technical features of the first embodiment of the present invention is to install one or more condensation preventing dampers 30 in front of the outlet 111 of the air supply fan 11.

The condensation prevention damper 30 is coupled to the rotary shaft 32 is fixedly installed at a predetermined position in front of the outlet 111 of the air supply fan 11, and rotatably coupled with the rotary shaft 32 from the outlet 111 A plate-shaped damper blade 31 which is opened and closed to open or close the communicating air supply pipe 4 and the packing 33 which is coupled to surround the edge of the damper blade 31 and closely adheres to the inner diameter of the air supply pipe. It includes a heat insulating material 60 is attached to one side or both sides of the damper blade 31 to a predetermined thickness.

As shown in FIG. 4, the ventilation air supply device 1 has an inlet opening 14 side of the main body 10 when the electric damper 20 is opened and condensation prevention is installed in front of the outlet 111 of the air supply fan 11. Since the damper 30 is also opened, outside air may be introduced and filtered and then supplied to the room.

Subsequently, when the ventilation air supply device 1 is not used in which the electric damper 20 is sealed, the electric damper 20 of the inlet 14 side of the main body 10 is closed and the outlet 111 of the air supply fan 11 is closed. As the condensation preventing damper 30 is closed at the front, the space from the electric damper 20 to the condensation preventing damper 30 is sealed and newly separated while being separately partitioned.

The space is a space designated by the applicant 'temperature difference buffer space (A1), and is separated from the external air supply pipe space on the left side of the electric damper 20 and separated from the indoor air supply pipe space on the right side of the anti-condensation damper 30. It is a space and plays a role of buffering the temperature difference generated between the external air supply pipe space and the indoor air supply pipe space in the middle.

For example, when the winter outside temperature is 0 ~ -13 ℃, the room temperature is about 18 ~ 23 ℃, when the outside temperature and the room temperature meets as it is condensation on the right side of the indoor side of the electric damper 20 (結露) Is generated overnight, and the iron flows down and collects in the main body 10 and flows up to the air supply pipe 4.

However, when the temperature difference buffer space (A1) is formed by the present invention, even if the outside temperature is 0 ~ -13 ℃ and the room temperature is 18 ~ 23 ℃, the temperature difference buffer space (A1) is about 7.4 ℃ and dew point temperature is- Condensation occurs when the temperature reaches 2.1 ℃, but when the average relative humidity is 30% in winter, the humidity is not saturated, and condensation is suppressed. This effect is spaced apart from the anti-condensation damper 30, if the additional anti-condensation damper is additionally installed, the effect is improved.

In addition, when the air supply fan 11 is driven for ventilation, the electric damper 20 is electrically opened and the condensation prevention damper 30 is a BDD damper due to the pressure of the air supply fan 11. It can be configured to open automatically.

Of course, the condensation preventing damper 30 may be configured to be driven by electric power instead of the B.D.D.damper (Back Draft Damper).

In addition, as shown in Figure 7, in order to further improve the condensation prevention effect to the one side or both sides of the damper blade 21 of the electric damper 20 by attaching a heat insulating material 60 having a predetermined thickness buffer effect Can be improved.

In addition, as shown in FIG. 6, the second condensation preventing damper 40 is additionally formed on the left side immediately outside of the electric damper 20, thereby providing a second temperature difference buffering space A2 on the left side of the electric damper 20. You can also add more. This part is described in more detail in Example 3 below.

(Example 2)

First, as shown in Figure 5, the second embodiment of the present invention is a case of the ventilation air supply device 1 having one inlet 14 and one outlet 15, the condensation prevention damper in the outlet 15 It is a technical feature to install 30.

The condensation preventing damper 30 is omitted in the same configuration as the first embodiment, and only the installation position is installed at the outlet 15 of the main body 10.

As shown in FIG. 5, the ventilation air supply device 1 is a condensation preventing damper 30 installed at the outlet 15 of the main body 10 at the same time as the electric damper 20 of the inlet 14 of the main body 10. ) Is also open, it can be supplied to the room after the outside air is introduced and filtered.

Thereafter, when the ventilation air supply device 1 is not used, the air supply fan 11 is stopped and the electric damper 20 of the inlet 14 side of the main body 10 is closed and installed at the outlet 15 of the main body 10. As the condensation preventing damper 30 is sealed, the temperature difference buffering space partitioned between the electric damper 20 and the condensation preventing damper 30 does not directly meet the cold inside the left external air supply pipe and the warm air inside the right indoor air supply pipe ( A1) is sandwiched between them.

The space between the electric damper 20 partitioned by the anti-condensation damper 30 from the anti-condensation damper 30, that is, the internal space of the main body 10 of the air supply device 1 for ventilation is a temperature difference buffering space A1. )

The temperature difference buffer space (A1) serves to buffer the temperature difference between the outside and the room in the middle by separating the left external air supply pipe space of the electric damper 20 and the right indoor air supply pipe space of the condensation prevention damper 30.

For example, when the winter outside temperature is 0 ~ -13 ℃, the room temperature is about 18 ~ 23 ℃, when the outside air and the indoor air as it meets condensation on the right side of the indoor side of the electric damper 20 (結露) Is generated overnight and the iron flows down and accumulated in the main body 10 and continues to overflow and flows into the air supply pipe 4.

However, if the temperature difference buffer space (A1) is formed by the present invention, even if the outside temperature is 0 ~ -13 ℃ and the room temperature is 18 ~ 23 ℃, the temperature difference buffer space (A1) is about 7.4 ℃ and 50% relative humidity When dew point temperature is -2.1 ℃, dew condensation occurs, but when looking at the average relative humidity of 30% in winter, humidity is not saturated, condensation is suppressed.

This effect is improved when the additional condensation preventing damper 30 is additionally installed as mentioned in the first embodiment to prevent the condensation preventing damper 30, and the damper blade 21 of the electric damper 20 as shown in FIG. Attaching the heat insulating material 60 having a predetermined thickness to one side or both sides of the) may improve the temperature difference buffering effect.

In addition, the condensation prevention damper 30 may be configured to be a BDD damper (Back Draft Damper) or electrically driven.

Example 3

First, as shown in Figure 6, the third embodiment of the present invention is the case of the ventilation air supply device 1 having one inlet 14 and one outlet 15 as in the second embodiment, the condensation prevention effect In order to improve the technical characteristics of installing the second condensation preventing damper 40 on the inlet 14 side of the electric damper 20 outside.

The second condensation preventing damper 40 is fixed to a predetermined position of the external air supply pipe spaced apart from the electric damper 20 to the cap grill 50, and the rotary shaft 42 and the rotary shaft 42 A plate-shaped damper blade 41 rotatably coupled to open and close to open or close an external air supply pipe communicating with the cap grill 50, and coupled to surround an edge of the damper blade 41, and the inner diameter of the air supply pipe. The packing 43 is in close contact with the heat insulating material 60 is attached to one side or both sides of the damper blade 41 to a predetermined thickness.

As shown in FIG. 6, the ventilation air supply device 1 has a second condensation preventing damper 40 installed outside the electric damper 20 at the same time as the electric damper 20 on the inlet 14 side of the main body 10 when in use. Is opened and the condensation prevention damper 30 installed at the outlet 15 of the main body 10 is also opened, whereby outside air may be introduced and filtered and then supplied to the room.

Subsequently, when the ventilation air supply device 1 is not in use, the air supply fan 11 is stopped and the electric damper 20 on the inlet 14 side of the main body 10 is closed and installed outside the electric damper 20. The second condensation prevention damper 40 and the condensation prevention damper 30 provided at the outlet 15 of the main body 10 are sealed, thereby preventing the second condensation prevention damper 40 from being separated from the outside by the second condensation prevention damper 40 ( It is separated into a closed space between the 40 and the electric damper 20, a space between the electric damper 20 and the condensation preventing damper 30 and the indoor air supply pipe space.

As in the second embodiment, a space between the electric damper 20 partitioned by the anti-condensation damper 30 and the anti-condensation damper 30, that is, the sealed interior of the main body 10 of the ventilation air supply device 1. The space is a temperature difference buffer space A1, and a second temperature difference buffer space A2 is formed between the second condensation preventing damper 40 and the electric damper 20 and is enclosed and partitioned. Since the role of buffering the temperature difference between the buffer space (A1) additionally it is possible to increase the effect of preventing condensation.

For example, if the outside temperature is 0 to -13 ° C and the room temperature is 18 to 23 ° C, the temperature difference buffer space A1 is about 7.3 ° C and the second temperature difference buffer space A2 is about 6.9 ° C. When dew point temperature is -2.1 ℃ to prevent the humidity is saturated, condensation is suppressed.

The condensation prevention damper 30 and the second condensation prevention damper 40 may be configured as a B.D.D.damper (Back Draft Damper) which is opened by the pressure of the air supply fan 11 or may be configured to be electrically opened.

In addition, as shown in Figure 7, in order to further improve the condensation prevention effect by attaching a heat insulating material (60) having a predetermined thickness on one side or both sides of the damper blade 21 of the electric damper (20) by the temperature difference buffering effect Can be improved.

In addition, by manufacturing the material of the damper blades (21, 31, 41) using a low thermal conductivity material can improve the temperature difference buffering effect.

Applicant has commissioned the Korea Aerospace University Industry-Academic Cooperation Agency and the Mechanical Aviation Industry Reliability Technology Research Center to conduct experiments to verify the effect of the present invention under the name `` A study on the occurrence of moisture condensation due to temperature changes inside and outside the blower unit. '' The process and results are extracted and published as follows.

This research experiment was to determine the temperature changes and characteristics according to the opening and closing of a plurality of dew condensation prevention dampers in each section using a heat insulation experiment device equipped with a supply / exhaust device as shown in FIG.

(Example 1): When only conventional electric damper (air supply fan non operating)

-Experimental conditions

(1) Opening the second condensation prevention damper / closing the electric damper / opening the condensation prevention damper

(2) Outside air temperature about -5 ~ -13 ℃, average relative humidity 30 ~ 50% (cold storage of freezer)

(3) Room temperature about 20 ~ 26 ℃, average relative humidity 30 ~ 50% (heating machine heat)

(4) Balcony (inside the experimental device) temperature about 4 ~ 10 ℃, relative humidity 30 ~ 50%

- Experiment result

Using the experimental apparatus as shown in FIG. 9, the following temperature measurement results were obtained.

[Result Table 1]: Temperature measurement result of Experimental Example 1

[Graph 1]: Temperature distribution graph over time

Result Analysis

If the outside air temperature of the electric damper is -13 ° C and the right air temperature of the electric damper is 20 ° C in contact with the damper blade of the electric damper, the wet air temperature graph shows a dry air temperature of 20 ° C and a relative humidity of 50%. Since dew point temperature is 9.2 ℃, dew condensation is generated in damper blade of electric damper.

In addition, when the internal temperature of the air supply device for ventilation and the balcony temperature of 5 ° C are in contact with the air supply device in between, the dew point temperature at the dry bulb temperature of 20 ° C and the relative humidity of 50% is 9.2 ° C. Is generated.

Therefore, in the case of the conventional ventilation air supply device provided with only the electric damper 20, it was confirmed that the condensation occurs on the damper blade and the inner surface of the air supply device of the electric damper when not in use.

Experimental Example 2 Example 2 If the electric damper + condensation prevention damper (air supply fan non operating)

-Experimental conditions

(1) Opening the second condensation prevention damper / closing the electric damper / closing the condensation prevention damper

(2) Outside air temperature about -5 ~ -13 ℃, average relative humidity 30 ~ 50% (cold storage of freezer)

(3) Room temperature about 20 ~ 26 ℃, average relative humidity 30 ~ 50% (heating machine heat)

(4) Balcony (inside the experimental device) temperature about 4 ~ 10 ℃, relative humidity 30 ~ 50%

(5) Experiment conducted without attaching insulation 60 to damper blades of electric damper and anti-condensation damper

- Experiment result

Using the experimental apparatus as shown in FIG. 9, the following temperature measurement results were obtained.

[Table 2]: Temperature measurement result of Experimental Example 2

[Graph 2]: Temperature distribution graph over time

Result Analysis

If the outside air temperature of the electric damper is -13 ℃ and the air temperature of the right side of the electric damper is 7.4 ℃ contacted with the damper blades of the electric damper interposed, the dry air temperature is 7.4 ℃ and the relative humidity is 50%. Condensation may occur in the damper blades of the electric damper because the dew point temperature is -2.1 ° C. However, condensation may be prevented by using an insulation material that can overcome the temperature difference of about 4.6 ° C or more.

In addition, when the air temperature on the left side of the electric damper is 7.4 ℃ and the air temperature on the right side of the anti-condensation damper is 23 ° C in contact with the damper blade of the anti-condensation damper, when the dry air temperature is 23 ℃ and the relative humidity is 50%, Condensation may occur at the dew point temperature of 12 ° C, but dew condensation will not occur as the dew point temperature is 4.5 ° C when the average relative humidity is 30% in winter.

In addition, when the internal temperature of 7.4 ° C and the balcony temperature of 5 ° C of the ventilation air supply unit are in contact with the air supply main body in between, the dew point temperature at the dry bulb temperature of 7.4 ° C and the relative humidity of 50% is -2.1 ° C. Does not occur.

Accordingly, in the case of the ventilation air supply device including the electric damper 20 and the anti-condensation damper 30 as in the second embodiment of the present invention, condensation may occur in the damper blade of the electric damper when not in use, which is about 4.6 ° C. Condensation can be prevented by using a heat insulating material that can overcome the above temperature difference, and the condensation preventing damper and the main body were confirmed by experiments that no condensation occurred.

(Experimental Example 3): In the case of the second condensation prevention damper + electric damper + condensation prevention damper of Example 3 (when the air supply fan is not operated)

-Experimental conditions

(1) Closing the second condensation prevention damper / closing the electric damper / condensation prevention damper

(2) Outside air temperature about -5 ~ -13 ℃, average relative humidity 30 ~ 50% (cold storage of freezer)

(3) Room temperature about 20 ~ 26 ℃, average relative humidity 30 ~ 50% (heating machine heat)

(4) Balcony (inside the experimental device) temperature about 4 ~ 10 ℃, relative humidity 30 ~ 50%

(5) Experiment conducted without attaching insulation 60 to damper blades of electric damper and anti-condensation damper

- Experiment result

Using the experimental apparatus as shown in FIG. 9, the following temperature measurement results were obtained.

[Table 3]: Temperature measurement result of Experimental Example 3

[Graph 3]: Temperature distribution graph over time

Result Analysis

If the outside air temperature of the second anti-condensation damper is -13 ℃ and the air temperature of the right of the second anti-condensation damper is 6.9 ℃ between the damper blades of the second anti-condensation damper, the dry air temperature is shown in the wet air diagram. The dew point temperature at 6.9 ℃ and 50% relative humidity is -2.7 ℃, so condensation may occur on the damper blades of the electric damper.However, it is possible to prevent condensation by using an insulation material that can overcome the temperature difference of about 4.6 ℃. .

In addition, when the air temperature of 6.9 ° C in the duct between the second anti-condensation damper and the electric damper is in contact with the duct centered around the duct, the dew point at the dry bulb temperature of 6.9 ° C and the relative humidity of 50% is shown on the wet air diagram. Since the temperature is -2.7 ° C, no condensation occurs in the duct.

In addition, when the left air temperature of 6.9 ℃ and the right air temperature of 7.3 ℃ of the electric damper are in contact with the damper blades of the electric damper, the dew point temperature at the dry bulb temperature of 7.3 ℃ and the relative humidity of 50% is indicated by the wet air diagram. As it is 2 ℃, no dew condensation is generated in the damper blade of the electric damper.

In addition, when the air temperature in the duct between the electric damper and the dew condensation damper is in contact with the air temperature of 7.3 ° C and the body outside temperature of 5 ° C, the dew point temperature at the dry bulb temperature of 7.3 ° C and the relative humidity of 50% can be As it is -2.0 ℃, no condensation occurs in the duct.

In addition, when the air temperature of 7.3 ° C on the left side of the condensation prevention damper and 23 ° C on the right side of the anti-condensation damper are in contact with the damper blades of the condensation prevention damper, the dew point temperature when the dry bulb temperature is 23 ° C and the relative humidity is 50% through the wet air diagram Since condensation may occur in the damper blade of the electric damper because it is 12 ° C, no dew condensation occurs because the dew point temperature is higher than 4.5 ° C when the average relative humidity is 30% in winter. In addition, to prevent the occurrence of condensation in all relative humidity by using a heat insulating material that can overcome the temperature difference of about 4.7 ℃ or more can easily prevent condensation.

Accordingly, in the case of the ventilation air supply device including the second condensation preventing damper 40, the electric damper 20, and the condensation preventing damper 30, as in the third embodiment of the present invention, the damper of the second condensation preventing damper when not in use Condensation may occur in the damper blades of the blade and the condensation prevention damper. However, condensation may be easily prevented by using an insulation material that can overcome the temperature difference of about 4.7 ° C. or more, and no condensation may occur in the electric damper and the main body. It was confirmed by the experiment.

Therefore, the damper blade material of the anti-condensation damper 30 and the second anti-condensation damper 40 of the present invention through the results of the experimental examples 1, 2, 3 requested by the applicant or adopt a material having excellent thermal insulation When the insulation 60 is attached to one or both sides of one or more damper blades, condensation preventing effects can be obtained at all positions and relative humidity, thereby achieving the object of the present invention.

The condensation prevention damper 30 and the second condensation prevention damper 40 may be configured as a B.D.D.damper (Back Draft Damper) which is opened by the pressure of the air supply fan 11 or may be configured to be electrically opened.

In addition, as shown in Figure 7, in order to further improve the condensation preventing effect of the damper blades (21, 31, 41) of the electric damper 20, the condensation prevention damper 30 and the second condensation prevention damper 40 It is possible to improve the temperature difference buffering effect by attaching a heat insulating material 60 having a predetermined thickness on one side or both sides.

In addition, by manufacturing the material of the damper blades (21, 31, 41) using a low thermal conductivity material can improve the temperature difference buffering effect.

(Modified Example 1)

First, as shown in Figure 12, modified example 1 of the present invention through the results obtained through the experimental examples 1, 2, 3, Example 2 in addition to attaching the insulating material 60 to improve the condensation prevention effect The technical features of changing the structure of the anti-condensation damper (30, 40) used in, 3.

The anti-condensation dampers 30 and 40 of the first modified example are coupled to one end of the rotation shafts 32 and 42 by a drive box and a control box 35 incorporating a control unit, and are driven by electric power. The plate-shaped damper blades 31 and 41 are rotatably coupled to each other and are rotatably fixed at predetermined intervals on the front and rear sides of the rotation shafts 32 and 42.

The control box 35 is a technique disclosed in the applicant's prior registration No. 10-612774, the description of its detailed configuration will be omitted.

The two damper blades 31 and 41 are simultaneously rotated and opened together with the rotation shafts 32 and 42. When the two damper blades 31 and 41 are closed, the packings 33 and 43 of the damper blades 31 and 41 are damped and the damper blades 31 and 41 are closed. 2) improves hermeticity and improves heat insulation efficiency and condensation prevention.

(Modified example 2)

First, as shown in Figure 13, the modified example 2 of the present invention through the results obtained through the experimental examples 1, 2, 3, Example 2 in addition to attaching the heat insulating material 60 to improve the condensation prevention effect The technical features of changing the structure of the anti-condensation damper (30, 40) used in, 3.

The condensation prevention dampers 30 and 40 of the second modified example are driven by an electric motor by combining a control motor 35 incorporating a drive motor and a reduction gear in one end of the rotation shafts 32 and 42. Drive pulleys (321,421) coupled to the other end of the) and driven pulleys (361,461) coupled to one end of the second rotating shaft (36,46) is fixed and installed after being spaced apart from the rotation shaft (32, 42) by a predetermined distance In addition, the second damper blades 311 and 411 rotatably coupled to the second rotation shafts 36 and 46, and the timing belts 37 formed to rotate by a predetermined angle in conjunction with the driving pulleys 321 and 421 and the driven pulleys 361 and 461. 47).

The control box 35 is a technique disclosed in the applicant's prior registration No. 10-612774, the description of its detailed configuration will be omitted.

The damper blades 31 and 41 and the second damper blades 311 and 411 are rotated by interlocking with the rotation shafts 32 and 42 rotated by the driving force transmitted from the control box 35. Are linked and opened simultaneously.

As in the first modified example, two damper blades are opened and closed at the same time, so that two seals (33, 43) of the damper blades (31, 41) and two damper blades (31, 41) at the time of sealing improve sealing performance. The insulation efficiency and the condensation prevention effect are improved, and in addition, the space closed between the spaced damper blades 31 and 41 and the second damper blades 311 and 411 becomes a new temperature difference buffering space, so that the insulation efficiency and condensation are increased. The prevention effect is improved.

In addition, if the inside or the outside of the main body 10 of the ventilation air supply device 1 of the present invention is wrapped with a heat insulating material 60 of a predetermined thickness, the effect will be further increased.

Reference numeral 2 is an outer wall, 3 is an interior wall, 108a is a concrete layer, 108b is a sound insulation layer, 108c is a bubble layer, 108d is a hot and cold water pipe, 108e is a mortar layer, B is a porch, and R is a toilet.

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.

Description of the Related Art
1: Ventilation air supply unit 2: Outer wall
3: interior wall 4: air supply piping
5: dew condensation 6: fungi
10: main body 11: air supply fan
111: outlet 12: filter
13: fan mounting wall 14: inlet
15: outlet 20: electric damper
21: damper blade 30: anti-condensation damper
31,41: damper blade 32,42: axis of rotation
311, 411: second damper blade 321, 421: driving pulley
33,43 packing 35,45 control box
36,46: 2nd rotation axis 361,461: driven pulley
37, 47: timing belt 40: the second condensation prevention damper
50: cap grill 60: insulation
A1: temperature difference buffer space A2: second temperature difference buffer space

Claims (6)

At the same time as the operation of the air supply fan installed in the main body, the electric damper installed at the inlet side of the main body is opened to introduce external air from the outside of the building and through the air supply pipe installed to communicate with each generation room of the building through the ceiling or the indoor floor of the building. In the ventilation air supply unit for supplying air,
The electric damper 20 is interlocked with the air supply fan 11 to seal the air supply pipe on the inlet 14 side of the main body 10 when the air supply fan 11 is not operated;
Rotating shaft 32 is fixedly installed at a predetermined position in front of the discharge port 111 of the air supply fan 11, and the indoor side air supply pipe that is rotatably coupled with the rotary shaft 32 to communicate from the discharge port 111 ( 4) a plate-shaped damper blade 31 to be opened or closed to open or close the seal, a packing 33 coupled to surround the edge of the damper blade 31 to be in close contact with the inner diameter of the air supply pipe, and the damper blade 31. One or more condensation preventing dampers 30 including one or more sides of the insulating material 60 attached to a predetermined thickness to be spaced apart;
The condensation preventing damper 30 is condensed with the electric damper 20 by sealing the indoor air supply pipe 4 with a damper blade 31 when the air supply fan 11 is not operated in conjunction with the air supply fan 11. Ventilation air supply device for preventing condensation using a condensation prevention damper, characterized in that it is configured to form a sealed temperature difference buffer space (A1) between the damping damper (30). The method of claim 1,
A rotating shaft 42 which is fixed to a predetermined position of an external air supply pipe which is provided outside the building from the electric damper 20 and is provided with a cap grill 50 for supplying outside air of the building, and the rotating shaft ( 42 is rotatably coupled with the plate-shaped damper blade 41 which opens and closes to open or close the external air supply pipe communicating with the cap grill 50, and is coupled to surround the edge of the damper blade 41. At least one second condensation preventing damper 40 including a packing 43 in close contact with the inner diameter of the air supply pipe and a heat insulating material 60 attached to one side or both sides of the damper blade 41 at a predetermined thickness. To be provided;
The second condensation preventing damper 40 is interlocked with the air supply fan 11 to seal the external air supply pipe with a damper blade 41 when the air supply fan 11 is not operating, thereby preventing the second condensation preventing damper 40. And a second temperature difference buffer space (A2) sealed between the electric damper and the electric damper (20). 3. The method of claim 2,
One or more of the condensation preventing damper 30 and the second condensation preventing damper 40 may be automatically opened and closed by a pressure according to the operation of the air supply fan 11. Ventilation supply to prevent 3. The method of claim 2,
At least one of the condensation preventing damper 30 and the second condensation preventing damper 40,
A drive box and a control box 35 incorporating a control unit 35 in one end of the rotary shafts 32 and 42 to drive the rotary shafts 32 and 42 by electric power;
The damper blades 31 and 41 are provided with two damper blades 31 and 41 so as to be rotatably fixed to the front side and the rear side with respect to the rotational shafts 32 and 42 by using a condensation prevention damper, characterized in that the configuration. Ventilating air supply to prevent condensation. 3. The method of claim 2,
At least one of the condensation preventing damper 30 and the second condensation preventing damper 40,
A drive box and a control box 35 incorporating a control unit 35 in one end of the rotary shafts 32 and 42 to drive the rotary shafts 32 and 42 by electric power;
Drive pulleys 321 and 421 coupled to the other ends of the rotary shafts 32 and 42, and coupled to one ends of the second rotary shafts 36 and 46 fixedly installed after being spaced apart from the rotary shafts 32 and 42 by a predetermined distance. Driven pulleys 361 and 461, plate-shaped second damper blades 311 and 411 rotatably coupled with the second rotary shafts 36 and 46, and drive pulleys 321 and 421 and driven pulleys 361 and 461 are interlocked and fixed. Ventilation air supply device for preventing condensation using a damping condensation damper, characterized in that it comprises a timing belt (37,47) formed to rotate in an angle. 6. The method according to any one of claims 1 to 5,
The main body 10 is a ventilation air supply device for preventing condensation using a condensation prevention damper, characterized in that the insulating material 60 is attached to a predetermined thickness so as to surround the inner circumferential surface or the outer circumferential surface.

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