KR100746078B1 - Duct of Air Conditioning System - Google Patents

Abstract

The present invention is to provide a duct to block the air noise in the duct in the air conditioning system having a ventilation function, along with the indoor cooling, heating function.

The present invention provides an air conditioning system for ventilating a room and supplying air conditioned to a room and a duct communicating with the room; Silencer formed in a hollow cylindrical shape to form a flow cross-section corresponding to the flow cross-section of the duct, installed on the duct's pipeline, to remove the flow noise of air flowing through the duct by forming at least a portion of the duct: It provides a duct of the air conditioning system comprising a.

Air Conditioner, Indoor Air Conditioning System, Duct, Silencer

Description

Duct of Air Conditioning System

1 is a view schematically showing an air conditioning system according to an embodiment of the present invention

FIG. 2 is a perspective view schematically showing an internal configuration of an embodiment of an indoor air conditioner provided in the air conditioning system shown in FIG.

3 is a plan view schematically showing the internal configuration of the indoor air conditioner shown in FIG.

4 is a view showing a state in which a silencer is installed in the duct according to an embodiment of the present invention

5 is a cross-sectional view of the silencer taken along the line I-I of FIG.

Figure 6 is a perspective view showing a cover case of the silencer according to an embodiment of the present invention

7 is a perspective view showing a support guide according to an embodiment of the present invention

8 is a perspective view showing a sound absorbing member according to an embodiment of the present invention;

<Description of Symbols for Major Parts of Drawings>

320: duct 500: silencer

510: Case 520: Cover Case

521: coupling groove 530: support guide

531: hole 532: packing part

540: sound absorbing member 541: air layer

The present invention relates to an air conditioning system, and more particularly, to an air conditioning system in which a ventilation function of a room is performed in addition to a cooling and heating function of a room.

Generally, an air conditioning system functions to cool or heat an indoor space such as a living space, a restaurant, a library, or an office.

To this end, a general air conditioning system includes a compressor, a condenser, an expansion device, and an evaporator, and indoor air is cooled or heated by a phase change of the refrigerant passing through the compressor, the condenser, the expansion device, and the evaporator.

The air conditioning system is classified into an integrated air conditioning system in which an outdoor unit and an indoor unit are integrally formed, and a separate air conditioning system in which the outdoor unit and the indoor unit are separately installed.

Here, the integrated air conditioning system is a structure in which an indoor unit for heat exchange with indoor air and an outdoor unit for heat exchange with outdoor air are integrally installed in one case, and are mainly installed in a window.

In the separated air conditioning system, an indoor unit that exchanges heat with indoor air is attached to a wall or a ceiling of an indoor air, and an outdoor unit that exchanges heat with outdoor air is configured separately from the indoor unit and installed on a balcony of a apartment or an exterior wall of a building.

However, the above-described general air conditioning system has a structure that cools or heats a room simply by circulating indoor air, and in recent years, in order to maintain a more comfortable indoor environment, a cooling function and a cooling function of a room are provided. There is a need for the development of advanced air conditioning systems.

In addition, it is also required to develop an indoor air conditioner, that is, an indoor air conditioner of the air conditioning system, which is provided in the air conditioning system and minimizes heat loss during ventilation of the room, and is easy to install and efficiently utilizes the indoor space.

In order to solve the above problems, an object of the present invention is to provide an air conditioning system that maintains a more comfortable indoor environment is provided with a ventilation function in addition to the cooling, heating function of the room.

Another object of the present invention is to provide an air conditioning system that is easy to install while minimizing heat loss during ventilation of a room.

In order to achieve the above object, the present invention, a duct for communicating the room and the indoor air conditioning apparatus for ventilating the room and supplying air harmonized into the room; Silencer is formed in a hollow cylinder shape to form a flow cross-section corresponding to the flow cross-section of the duct, is installed on the duct's pipeline, at least part of the duct to remove the flow noise of air flowing through the duct Provide ducts for air conditioning systems, including:

Here, the muffler is formed in a cylindrical shape with both ends open so as to communicate with the duct, a case forming at least part of the duct, a plurality of holes are formed on the surface and the support guide is installed on the inner side of the case, And a sound absorbing member interposed between the support guide and the inner surface of the case.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

The same components as in the prior art are given the same names and the same reference numerals for convenience of description, and detailed description thereof will be omitted.

First, an air conditioning system according to an embodiment of the present invention will be described with reference to FIG. 1.

Air conditioning system according to the present invention, the indoor air conditioner 100 having a temperature control function of the air supplied to the room, the outdoor unit 200 for heat exchange with the outdoor air, the duct unit connected to the indoor air conditioner to guide the air 300, and a fan power unit 400 for discharging the indoor air sucked in the room and the harmonized air supplied from the indoor air conditioning apparatus 100 to the room.

Here, the indoor air conditioner 100 is configured to perform a function of a conventional indoor unit that cools or heats the air supplied to the room, and at the same time, performs a function of preventing heat loss of the room during the ventilation. The structure will be described later.

The indoor air conditioner 100 is configured to perform a function of minimizing heat loss by mutual heat exchange between outdoor air supplied into the indoor air and indoor air discharged into the outdoor.

The indoor air conditioning apparatus 100 may be installed on a ceiling or a wall of a room, but is preferably installed on a ceiling of a veranda (not shown) in order to effectively utilize an indoor space.

In general, the veranda is installed adjacent to the living room, the ceiling of the veranda is built higher than the ceiling of the living room or room.

Therefore, by installing the indoor air conditioner 100 on the ceiling of the veranda, it is not necessary to form an accommodation space of a predetermined size for accommodating the indoor air conditioner 100 on the ceiling or the wall of the room.

In addition, due to the installation of the indoor air conditioner 100, the problem of harming the aesthetics of the room is also eliminated, it is possible to cool or heat a plurality of rooms (室) using one indoor air conditioner (100).

The outdoor unit 200 is installed on an outer wall or a veranda of a building, and includes a heat exchanger for exchanging heat with the outdoor air, and a blower for forcing the flow of air to increase the heat exchange efficiency of the outdoor air and the heat exchanger.

Next, the duct unit 300 functions to guide indoor air to the indoor air conditioner 100 and to guide air from the indoor air conditioner 100 to the room.

To this end, the duct 300, the first duct 310 for guiding the indoor air to the indoor air conditioning apparatus 100, and guides the air supplied into the room from the indoor air conditioning apparatus 100 to the interior It is configured to include a second duct 320.

Here, each of the ducts 310 and 320 constituting the duct 300 is installed in the ceiling of the room, it is preferably configured in a double pipe structure to minimize the heat loss.

Next, a fan power unit 400 is installed at the end of the second duct 320. The fan power unit 400 is mainly installed on the ceiling of the room.

Hereinafter, an embodiment of an indoor air conditioner for air conditioning of air supplied to a room will be described with reference to FIGS. 2 and 3.

2 is a perspective view showing the internal configuration of the indoor air conditioner according to an embodiment of the present invention, Figure 3 is a plan view showing the internal configuration of the indoor air conditioner according to an embodiment of the present invention.

2 and 3, the indoor air conditioner 100 according to the present invention includes a regeneration heat exchanger 110 for mutual heat exchange between the outdoor air supplied from the outside for ventilation and the indoor air discharged to the outside. It comprises an indoor heat exchanger 120 for controlling the temperature of the supplied air, and a cabinet 130 for receiving the regeneration heat exchanger 110 and the indoor heat exchanger 120.

That is, the regenerative heat exchanger 110 is accommodated in one side of the cabinet 130, and the indoor heat exchanger 120 is accommodated in the other side.

In more detail, the cabinet 130 includes a first inlet 131 through which indoor air is introduced, a first outlet 132 through which the air supplied from the indoor heat exchanger 120 to the room is discharged, and the regeneration And a second inlet 133 for supplying outdoor air to the heat exchanger 110 and a second outlet 134 for discharging the indoor air heat exchanged by the regenerated heat exchanger 110 to the outside.

Here, the cabinet 130 has a substantially rectangular box shape, the first duct 310 is connected to the first inlet 131, and the second duct 320 is connected to the first outlet 132. Connected.

In addition, the second suction port 133 may be provided with a preheater 133a for heating outdoor air flowing into the regenerative heat exchanger 110.

On the other hand, the first suction port 131 and the first discharge port 132 may be formed on one side, that is, the rear surface of the cabinet 130. In addition, the second suction port 133 and the second discharge port 134 may be formed on the other side, that is, the front surface opposite to the surface on which the first suction port 131 and the first discharge port 132 are installed. .

The cabinet 130 having the above-described configuration is installed on the ceiling of the veranda such that the rear surface of the cabinet 130 in which the first suction port 131 and the first discharge port 132 are formed faces toward the interior. Preferably, the other side perpendicular to the front and rear of the cabinet 130 is preferably installed on the ceiling edge of the veranda so as to be in close contact with one side wall of the veranda.

Here, although the outdoor air discharged from the regenerative heat exchanger 110 for indoor ventilation may be directly supplied to the room through a separate duct (not shown), in order to supply more comfortable air to the indoor occupant, the The outdoor air discharged from the regenerative heat exchanger 110 is introduced into the indoor heat exchanger 120, cooled or heated, and then supplied to the indoor air.

To this end, the first inlet 131 is selectively in communication with the second outlet 134, and the second inlet 133 is configured to selectively communicate with the first outlet 132.

Referring to the structure of the regeneration heat exchange unit 110 in more detail, the regeneration heat exchange unit 110, the first to discharge the outdoor air sucked into the second inlet 133 to the indoor heat exchanger 120 side. The communication port 111, the second communication port 112 through which the indoor air sucked into the cabinet 130 through the first suction port 131 is introduced to be opened and closed to the first communication port 111. A first damper 113 and a second damper 114 are provided to be opened and closed at the second communication port 112.

In addition, the regeneration heat exchange part 110 includes a first communication port 111 and a second communication port 112, and a boundary wall 115 forming a space in which the indoor heat exchanger 120 is accommodated. It is provided.

In addition, the regenerative heat exchanger 110 is provided with a substantially rectangular box shaped regenerative heat exchanger 116, but the shape of the regenerative heat exchanger 116 is not limited thereto.

Here, in the regeneration heat exchanger 116, a first flow path (not shown) through which indoor air discharged to the outside flows and a second flow path (not shown) which flows orthogonal to the first flow path flows through the outdoor air supplied into the room. ) Is provided.

In order to increase the heat exchange efficiency of the regenerative heat exchanger 116, the regenerative heat exchanger 116 preferably has a plurality of layered structures in which the first flow passage and the second flow passage are alternately stacked, but is not limited thereto. It is not.

The first flow path communicates with the second communication port 112 and the second discharge port 134, and the second flow path communicates with the first communication port 111 and the second suction port 133. do.

By the above configuration, since the indoor air passing through the first flow path exchanges with the outdoor air passing through the second flow path, heat loss of the air discharged to the outside is minimized.

The regenerative heat exchanger 116 configured as described above may be installed in various directions according to design conditions, so that any one of the first flow path and the second flow path is orthogonal to the front surface of the cabinet 130. It may be provided on one side inside the cabinet.

For example, one side surface of the regenerative heat exchanger 116 in which the inlet of the second flow path is formed is installed in close contact with or adjacent to the front inner wall of the cabinet 130, and one side surface of the regenerative heat exchanger 116. The second suction port 133 through which the outdoor air flows is formed on the front surface of the cabinet 130 corresponding to the front side of the cabinet 130. In this case, there is an advantage that can reduce the size of the cabinet 130.

Next, the first damper 113 and the second damper 114 are configured to be opened and closed by rotation.

The opening and closing angles of the first damper 113 and the second damper 114 are adjusted according to the operation mode of the air conditioner.

Here, the air conditioning system according to the present invention, the entire ventilation mode for discharging the entire indoor air introduced into the cabinet 130 through the first inlet 131 to the second outlet 134, the first Partial ventilation mode for discharging a part of the indoor air introduced into the cabinet 130 through the inlet 131 to the second outlet 134, and discharges the remainder through the first outlet 132, and the first It is preferable to be configured to be operated in the indoor air circulation mode for supplying all of the air introduced into the cabinet 130 through the inlet through the first outlet 132 back to the room, but is not limited thereto.

To this end, the second damper 114 guides the entire indoor air introduced into the cabinet 130 through the first suction port 131 to the second communication port 112 during the entire ventilation mode operation. do.

In some ventilation mode operation, the second damper 114 guides a part of indoor air introduced into the cabinet 130 through the first suction port 131 to the second communication port 112. do.

Next, in operation of the indoor air circulation mode, the second damper 114 blocks the second communication port 112 so that the entire indoor air sucked into the first suction port 131 is heat exchanged in the room. To be introduced into the machine 120.

Of course, the air conditioning system may be configured to be selectively operated in the full ventilation mode or the indoor air circulation mode, and may also be configured to be selectively operated in the partial ventilation mode or the indoor air circulation mode. have.

In addition to the above configuration, the interior of the cabinet 130, the suction flow path of the indoor air introduced through the first suction port 131, and is communicated with the suction flow path is discharged through the first discharge port 132 It is preferred that a guide wall 135 is provided which forms an exhaust passage of air.

Here, the indoor heat exchanger 120 is provided in the exhaust passage, and indoor air introduced through the first suction port 131 and / or outdoor air supplied through the first communication port 111 are the indoor air. After cooling or heating in the heat exchanger 120, it is supplied into the room through the second duct 320 connected to the first outlet 132.

In more detail, one end of the guide wall 135 is connected to an inner wall of the cabinet between the first inlet 131 and the first outlet 132, and the other end of the guide wall 135 is predetermined by the regenerative heat exchanger 110. A spaced distance is formed to form a communication hole (not shown) in which the suction passage and the exhaust passage communicate with each other.

In addition, the guide wall 135 may allow the indoor air introduced through the first suction port 131 to flow into the second communication port 112 of the regenerative heat exchanger 110 during the full ventilation mode operation. It is connected to the second damper 114.

In addition, the indoor air conditioner 100 according to the present invention, the first blower 140 for forcing the flow of air from the indoor heat exchanger 120 side to the first outlet 132 side, and the first suction port ( When communicating the 131 and the second outlet 134, it is preferable that a second blower 150 for forcing the flow of air from the first inlet 131 to the second outlet 134 is provided.

In more detail, the first blower 140 is provided between the indoor heat exchanger 120 and the first outlet 132, that is, in the exhaust passage, and flows in from the first suction port 131. It sucks indoor air and / or outdoor air discharged from the first communication port 111 and blows it to the first discharge port 132.

In addition, the second blower 150 is provided in the suction passage and forcibly sucks indoor air through the first suction port 131 and discharges the air to the second communication port 112.

Here, it is preferable that the discharge parts of the blowers 140 and 150 are provided with diaphragms 141 and 151 for dividing the discharge parts at a predetermined ratio.

The diaphragms 141 and 151 may be formed to extend toward the boundary wall 115 so as to be connected to the dampers 113 and 114 respectively opened at predetermined angles during the partial ventilation mode operation.

According to the above configuration, when the second communication port 112 is shielded by the second damper 114, air discharged from the second blower 150 flows into the exhaust flow path, thereby allowing the indoor heat exchange. Heat exchange in the vessel (120). At this time, the first communication port 111 is shielded by the first damper 113 so that all the air introduced into the exhaust flow path flows toward the indoor heat exchanger 120.

In addition, when the second damper 114 is connected to the guide wall 135 and the first damper 113 blocks the communication hole between the suction passage and the exhaust passage, the second blower 150 is disposed. Air discharged from the inlet flows into the regenerative heat exchanger 116 through the second communication port 112, and then is discharged to the outside through the second outlet 134. In addition, the external air sucked from the second suction port 133 is introduced into the regenerative heat exchanger 116 and heat exchanged with the air discharged to the outside, and then flows into the first blower fan 140 and is supplied into the room.

Next, when the second damper 114 is rotated by a predetermined angle, the second ventilation port 112 and the part of the ventilating mode operation in which both the communication passage between the exhaust passage and the suction passage is opened, that is, the first When the second damper 114 is connected to the diaphragm 151 and the first damper 113 is also connected to the diaphragm 141, the air discharged from the second blower 150 is discharged from the exhaust passage and the regeneration. The heat exchanger 116 is divided into a predetermined ratio and introduced therein. In addition, a part of air sucked through the indoor heat exchanger 120 by the first blower 140 and sucked through the indoor heat exchanger 120 is sucked into the first blower 140, and a part of the air is sucked by the second suction port 133 and the regenerated heat exchanger. Air passing through the group 116 is sucked into the room.

Of course, the second blower 150 may be provided on one side of the second outlet 134 or between the first flow path of the regeneration heat exchanger and the second communication port 112.

Furthermore, the blowers for forcing the flow of air, may be provided in the duct 300, not provided in the indoor air conditioner (100).

In addition, the first blower 140 and the second blower 150 may be driven by one motor.

On the other hand, the sirocco fan is a fan configured to suck air in the axial direction and discharge the air in the circumferential direction, the sirocco fan has a low flow noise generated, easy to install inside the cabinet 130, and increases the static pressure It has the advantage of increasing the air volume. In particular, in the sirocco fan as described above, both suction sides of the sirocco fan are formed on both sides is advantageous to increase the air intake amount.

Therefore, it is preferable that both the first blower 140 and the second blower 150 are configured as both suction sirocco fans.

Of course, the first blower 140 and / or the second blower 150 may be composed of a turbo fan, an axial flow fan having a guide guide, or a cross flow fan.

On the other hand, the first blower 140 is configured to be surrounded by the inner wall of the indoor heat exchanger 120 and the cabinet 130, the entire air sucked into the first blower 140 is the indoor heat exchanger. Cooled or heated at 120.

Here, a refrigerant pipe (not shown) through which the refrigerant flows is connected to the indoor heat exchanger 120, and the refrigerant flowing inside the indoor heat exchanger 120 is heated from air passing through the indoor heat exchanger 120. By absorbing or releasing heat to the air to perform the air conditioning function.

To this end, one end of the indoor heat exchanger 120 is connected to the inner wall of the cabinet, that is, the rear surface, to which the guide wall 135 is connected, and the other end is perpendicular to the back of the cabinet to which the guide wall 135 is connected. It is connected to the side inner wall, that is, the side inner wall, and constitutes an overall "b" shape.

Of course, the indoor heat exchanger 120 has one end connected to the guide wall 135 and the other end connected to the inner wall of the cabinet 130, that is, the side inner wall opposite to the guide wall 135. It may be configured in the shape, but when configured in the "b" shape as described above there is an advantage that the heat exchange area is increased.

As described above, when the indoor heat exchanger 120 is configured to have a "b" shape, the indoor heat exchanger 120 flows into the indoor heat exchanger 120 at an inflow side of the indoor heat exchanger 120, particularly at a position adjacent to the bent portion. It is preferable that a flow guide 136 is provided to prevent the air from being biased.

Of course, the flow guide 136 is provided to evenly distribute the air flowing into the indoor heat exchanger 120 on the entire surface of the indoor heat exchanger 120, the shape of the indoor heat exchanger 120 Rather, there is a deeper relationship with the flow direction of air flowing into the indoor heat exchanger 120 from the suction passage.

Referring to the operation according to the operation mode of the indoor air conditioning apparatus 100 according to the present invention configured as described above are as follows.

First, when a user designates an indoor air circulation mode and sets an indoor desired temperature, the first damper 113 and the second damper 114 connect the first communication port 111 and the second communication port ( Shield 112).

When the first blower 140 and the second blower 150 are driven, indoor air flows into the cabinet 130 through the first suction port 131 connected to the first duct 310. do.

The indoor air introduced into the cabinet 130 passes through the suction passage and enters the indoor heat exchanger 120 provided in the exhaust passage to undergo a heat exchange process.

The air that has undergone the heat exchange process in the indoor heat exchanger 120 flows to the second blower 150 and then is discharged to the first outlet 132, and the air discharged through the first outlet 132 is Guided into the room by the second duct 320 to cool or heat the room.

Next, when the user selects a partial ventilation mode and sets a desired temperature in the room, the first damper 113 and the second damper 114 are opened at predetermined angles, respectively, and the first blower 140 is opened. And the diaphragms 141 and 151 of the second blower 150.

When the first blower 140 and the second blower 150 are driven by a motor, the cabinet 130 is connected to the first air inlet 131 connected to the first duct 310 by indoor air. Flows inside.

Here, a part of the indoor air introduced into the cabinet 130 is introduced into the first flow path of the regenerative heat exchanger 116 communicating with the second communication port 112 by the second damper 114. The rest is introduced into the indoor heat exchanger 120 provided in the exhaust passage and undergoes a heat exchange process.

At the same time, the outdoor air is introduced into the second flow path of the regenerative heat exchanger 116 through the second suction port 133 by the driving of the first blower 140, and passes through the first flow path. After undergoing a heat exchange process with, the indoor heat exchanger 120 is introduced through the first communication port 111 and undergoes a heat exchange process. In addition, the indoor air introduced into the first flow path undergoes heat exchange with outdoor air flowing along the second flow path, and then is discharged to the outside through the second outlet 134.

The indoor air and outdoor air that have undergone heat exchange in the indoor heat exchanger 120 are supplied to the room by the second blower 150 to ventilate the room and simultaneously cool or heat the room.

On the other hand, when the user selects the entire ventilation mode and sets the desired temperature of the room, the first damper 113 and the second damper 114 are completely opened, so that the second damper 114 is guided. Is connected to the wall 135.

When the first blower 140 and the second blower 150 are driven by a motor, the cabinet 130 is connected to the first air inlet 131 connected to the first duct 310 by indoor air. Flows inside.

Here, the entire indoor air introduced into the cabinet 130 flows into the first flow path of the regenerative heat exchanger 116 communicating with the second communication port 112 by the second damper 114. .

At the same time, the outdoor air is introduced into the second flow path of the regenerative heat exchanger 116 through the second suction port 133 by the driving of the first blower 140, and passes through the first flow path. After undergoing a heat exchange process with, the indoor heat exchanger 120 is introduced through the first communication port 111 and undergoes a heat exchange process. In addition, the indoor air introduced into the first flow path undergoes a heat exchange process with outdoor air flowing along the second flow path, and then is discharged to the outside through the second outlet 134.

The outdoor air that has undergone the heat exchange process in the indoor heat exchanger 120 is supplied to the room by the first blower 140 to ventilate the room and simultaneously cool or heat the room.

The operation mode of the indoor air conditioner may be manually selected by a user or automatically selected by a controller connected to a predetermined temperature sensor and a turbidity sensor of indoor air.

As described above, the air conditioning system according to the present invention may be configured to be operated in a partial ventilation mode or an indoor air circulation mode, or may be configured to be operated in an entire ventilation mode or an indoor air circulation mode. It is self-explanatory in view of one content.

On the other hand, the guide wall 135 and the diaphragm 151 provided to the indoor air conditioner 100 according to the first embodiment is configured to smoothly flow the air.

However, when the second blower 150 is installed in the duct part 300, or when the second blower 150 is installed in one side of the second outlet 134 or in the regenerative heat exchanger 110, and the housing of the blower is formed in the guide wall. In case of functioning, the guide wall may not be provided.

In addition, the diaphragm 151 is omitted in other embodiments of the indoor air conditioner according to the present invention to be described below, if provided with the advantage that it is effective to maintain the ratio of the ventilation air and the recirculated air supplied back to the room have.

On the other hand, one side of the duct 300 is provided with a silencer 500 for removing the noise in the duct (310,320).

In this case, the silencer 500 may be modularized as shown in FIG. 4 and installed to replace a part of the ducts 310 and 320, but may be installed in the entire ducts 310 and 320.

On the other hand, as in the present embodiment, when the silencer 500 is modularized, the silencer 500 may be installed at any position of the ducts 310 and 320, but the noise suppression effect may be increased by installing at a position close to the fan. Could be. That is, the indoor air conditioner 100 and the connection portion 2 of the first duct 310 and / or the air conditioner 100 and the connection portion 2 of the second duct 320 can be installed, To be more effective in reducing noise may be installed in the position of the inlet side 3 of the fan power unit 400. In addition, it can be easily understood that it can be installed in a plurality of places of the duct (310,320).

The silencer 500 will be described in detail with reference to FIGS. 4 to 8 as follows. Hereinafter, a case in which the indoor air conditioner 100 and the connection portion 1 of the second duct 320 are installed will be described. The structure and effect are the same even when installed in different positions.

4 and 5, the silencer is installed at a position close to the discharge portion of the indoor air conditioner 100 of the duct 320.

In this case, since the duct 320 is embedded in the ceiling, it is preferable to use a flat duct having a rectangular flow cross section so that the height of the duct 320 is maximized while maximizing the air flow rate.

The silencer 500 is a tubular case 510 having both ends open, a cover case 520 coupled to both ends of the case 510 and connecting the silencer 500 and the duct 320, and the case ( The support guide 530 is installed along the inner surface and has a plurality of holes 531 formed therein, and the sound absorbing member 540 is interposed with a predetermined thickness between the inner surface of the case 510 and the support guide 530. It is made, including.

The case 510 is formed in a rectangular tube having a cross-sectional shape corresponding to the flow cross section of the duct 320. In particular, the outer circumferential surface of the duct 320 is preferably coupled to the inner surface of the muffler 500 so that the flow resistance does not increase in the portion where the silencer 500 and the duct 320 are coupled.

In addition, the cover case 520 is formed by the coupling groove 521 into which the end of the case 510 is fitted, and is assembled by simply fitting the both ends of the case 510.

In addition, the cover case 520 is formed in a rectangular ring shape having a width corresponding to the thickness of the sound absorbing member 540 so that the end of the support guide 530 is coupled.

Accordingly, the sound absorbing member 540 and the support guide 530 are installed along the inner surface of the case 510, and both ends of the case 510 are coupled to the cover case 520 in the coupling groove 521. When fitted into the groove 521, the coupling of the silencer 500 is completed.

In addition, the sound absorbing member 540 is fixed by applying a force such that the cover case 520 supports both ends, and the support guide 530 is in close contact with the inner surface of the case 510. In addition, the support guide 530 is fixed so as not to move inside the case 510 because the support guide 530 is applied to the sound absorbing member 540 and also the force itself, both ends of the cover case 520 Is coupled to the inner side of the.

On the other hand, when the coupling grooves 523 are formed on both sides of the cover case 520, it is possible to connect the silencer 500 in series by inserting the case 510 into each of the coupling grooves 523 of both sides. .

Next, a support guide 530 of a metal material is installed in the case 510 in a shape corresponding to that of the case 510.

Referring to FIG. 7, the support guide 530 has a rectangular cross section similar to the case 510. In particular, the support guide 530 has a plurality of holes having the same size at regular intervals on the surface of the support guide 530. 531 is formed.

Specifically, the support guide 530 is formed in a plate having a relatively thin thickness at regular intervals are formed in a zigzag hole 531, the rear of the rear surface of the sound is incident on the support guide 530 That is, the support guide 530 and the inner surface of the case 510 are installed to be spaced apart by a predetermined interval.

Here, the rear of the support guide 530 may be left as an empty space without installing the sound absorbing material, but as in the present embodiment, the sound absorbing member 540 is provided at the rear of the support guide 530 to provide a medium / high frequency band. It is effective to increase the sound absorption rate of the noise.

Here, the porous material, such as the sound absorbing member 540 has a high sound absorption rate mainly for the noise of the medium / high frequency band, the porous plate such as the support guide 530 has a high efficiency of sound absorption in a relatively narrow frequency band There is a characteristic.

Therefore, by installing the sound absorbing member 540 on the rear surface of the support guide 530 as in the present embodiment, it shows both the sound absorbing characteristics of the porous plate and the sound absorbing characteristics of the porous material, and thus high sound absorption rate for the noise of a relatively wide frequency band. Since it has, it is effective to remove the flow noise inside the duct 320.

On the other hand, the support guide 530 is the sound absorption rate is determined by the thickness and material of the plate, the diameter and spacing of the hole, the thickness of the rear air layer. In particular, it is effective for sound absorption to arrange a metal plate having a thin thickness, such as the support guide 530 according to the present embodiment, with small diameter holes at narrow intervals.

The support guide 530 is to remove noise using the principle of the Helmholtz resonator, the frequency of the noise incident on the support guide 530, the air layer behind the support guide 530 and the hole ( 531) The air in the portion resonates to cancel incident noise.

That is, the natural frequency of the support guide 530 is determined by the thickness of the support guide 530, the size of the hole 531, and the thickness of the sound absorbing member 540 installed behind. In addition, the number of the holes 531 and the spaced intervals also affect the sound absorption rate of the support guide 530.

Therefore, when the frequency of the noise of the duct 320 is near the natural frequency of the support guide 530, the support guide 530 vibrates due to the air in the portion of the hole 531, and then The sound energy incident by the generated frictional heat is converted into thermal energy to remove noise.

And, both ends of the support guide 530 is provided with a rubber packing portion 532. The packing part 532 is coupled to an inner side surface of the cover case 520, and the packing part 532 serves to fix the support guide 530 and the sound absorbing member 540 to the case 510. In addition, the silencer 500 also serves to connect the duct 320.

That is, when the silencer 500 is installed in the duct 320, when the duct 320 is pushed into the inner surface of the cover case 520, between the outer circumferential surface of the duct 320 and the cover case 520. Since the packing part 532 is compressed and inserted into the packing part 532, the duct 320 and the silencer 500 are fixed, and the coupling part of the duct 320 and the silencer 500 is sealed. Thus, air and heat are prevented from leaking to the outside of the duct 320 through the coupling portion.

Accordingly, the support guide 530 serves to remove noise in the duct 320, to fix the sound absorbing member 540, and to couple the duct 320 and the silencer 500.

Next, a sound absorbing member 540 having a predetermined thickness is interposed between the inner surface of the duct 320 and the support guide 530.

Referring to FIG. 8, the sound absorbing member 540 has the same shape as the case 510 and the support guide 530, and in particular, a square that may be interposed between the case 530 and the support guide 530. Has a hollow barrel shape.

Here, the sound absorbing member 540 is installed to a predetermined thickness on the inner surface of the case 510, the thickness of the sound absorbing member 540 installed on the side is thicker than the thickness of the sound absorbing member 540 is installed on the upper and lower surfaces. It is desirable to.

This is a foamed sound absorbing material such as the sound absorbing member 540 operates on the principle that noise is reduced by the sound energy incident from the bubbles formed on the surface and the inner surface is converted into heat energy and extinguished. In addition, the amount of noise attenuation of the sound absorbing member 540 is proportional to the thickness and density of the sound absorbing member 540, and in particular, has a high dependency on the thickness.

Therefore, in order to increase the noise rate, it is advantageous to install the sound absorbing member 540 thickly. The thickness of the sound absorbing member 540 is due to the size of the duct 320 and the height of the ceiling on which the duct 320 is installed. In fact, there are limitations.

Therefore, as in the present embodiment, due to the height of the ceiling in the duct 320, the sound absorbing member 540 is thickly installed on the left and right side, which is relatively limited to increase in size, rather than the upper and lower sides of the height is much limited. This is preferred.

That is, the thickness t1 of the sound absorbing member 540 installed on the side surface of the duct 320 may be optimal for the frequency band of noise absorbed by the sound absorbing member 540. 540 is preferably installed so as to be twice the thickness t2.

On the other hand, the sound absorbing member 540 is formed of a flame-retardant polyurethane foam (polyurethan faom), the air layer 541 of a predetermined thickness is formed therein.

By forming the air layer 541 inside the sound absorbing member 540 as described above, the density of the sound absorbing member 540 is reduced, and the thickness of the air layer 514 is the sound absorbing member, compared to forming the sound absorbing member 540 as a single layer. Since it acts by varying the thickness of the 540, the sound absorption rate of the sound absorbing member 540 can be optimized.

On the other hand, the sound absorbing member 540 not only removes the noise inside the duct 320 but also serves as a heat insulating material of the duct 320 due to the characteristics of the polyurethane foam. Therefore, even if a separate insulator is not installed in the silencer 500 or the case 510, heat loss can be prevented.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications without departing from the spirit of the present invention, and such modifications are within the scope of the present invention.

The indoor air conditioner of the air conditioner according to the present invention having the above configuration has the following effects.

First, the air conditioning system according to the present invention can perform not only the cooling and heating functions of the indoor space but also the ventilation function of the room at the same time, thereby providing a more comfortable environment for the indoor residents.

Second, according to the indoor air conditioner of the air conditioning system according to the present invention, since the regenerative heat exchanger for minimizing heat loss during indoor ventilation and the heat exchanger for cooling and heating the room is accommodated in one cabinet, the regenerative heat exchanger and the indoor unit separately Installation is easy compared with the case provided.

Third, according to the silencer of the air conditioning system according to the present invention, it is easy to install the silencer because it can be directly connected to the duct by modular fitting the silencer. In addition, since the sound absorbing member of the silencer also serves as a heat insulating material, there is no need to install more heat insulating material, so the volume is small and the structure is simple.

In addition, since the silencer has the same cross-sectional area as the flow cross-sectional area of the duct without significantly increasing the volume, an increase in flow resistance and the like at the coupling portion of the duct and the silencer does not occur due to the change in the cross-sectional area of the duct and the silencer.

On the other hand, since the sound absorbing member and the support guide, which constitute the silencer, can be directly installed in the duct, the overall duct can be easily installed and the structure can be simplified.

Claims (7)

It includes a duct for communicating the room and the indoor air conditioning device for ventilating the room and supply the harmonized air into the room, and a silencer for removing the flow noise of the air flowing through the inside of the duct, And the muffler is connected to communicate with the duct to replace a portion of the duct of the duct. The method of claim 1, The muffler is formed in a tubular shape in which both ends are open to communicate with the duct, forming a part of the duct pipe; A support guide having a plurality of holes formed on a surface thereof and installed on an inner side of the case; A duct of an air conditioning system, characterized in that it comprises a sound absorbing member interposed between the support guide and the inner surface of the case. The method of claim 2, Ducts of the air conditioning system, characterized in that the end of the case is further provided with a cover case for connecting the cases to each other by a simple fit. The method of claim 3, wherein The cover case is provided with a coupling groove into which the end of the case is fitted, the duct of the air conditioning system, characterized in that the cover case is formed in a ring shape formed with an opening communicating with the duct. The method of claim 2, An end portion of the case further includes a cover case that is simply fitted to the duct so that the case and the duct is connected and communicated, The cover case is a duct of the air conditioning system, characterized in that formed in a ring shape formed with an opening communicating with the duct. The method of claim 5, The duct of the air conditioning system, characterized in that the packing portion further comprises a contact surface of the cover case and the duct. The method of claim 2, The sound absorbing member is a duct of the air conditioning system, characterized in that the air layer of a uniform thickness is formed therein.

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