KR20090105323A - A duct type air conditioner - Google Patents

Abstract

PURPOSE: A duct-typed air conditioner is provided to prevent uneven temperature distribution of the air by mixing the outdoor air and the indoor air smoothly in case the outdoor air is flowed. CONSTITUTION: A duct-typed air conditioner includes a casing, a first inlet, a second inlet, a guide unit, and a heat exchanger. The first inlet(27) is prepared in the casing, and guides flow of the outdoor air. The second inlet(30) is equipped in the casing, and guides the inflow of the indoor air. The guide unit mixes the indoor air and the outdoor air in the casing. The heat exchanger is prepared in the casing. The guide unit is arranged between the heat exchanger and the first inlet.

Description

Duct type air conditioner {A DUCT TYPE AIR CONDITIONER}

The present invention relates to a duct type air conditioner, and more particularly, to an duct type air conditioner having an external air inflow function and capable of smoothly mixing external air and indoor air.

An air conditioner is a home appliance that adjusts an indoor air temperature to a user's desired range. The air conditioner is divided into a wall-mounted air conditioner, a packaged air conditioner, and a duct type air conditioner according to its arrangement.

The duct type air conditioner includes a casing forming the exterior and a fan unit provided inside the casing, and a heat exchanger, and the casing includes a suction duct and heat exchanged air that guides indoor air into the casing. It is connected to the guide exhaust duct.

Such a duct type air conditioner has an advantage of allowing air conditioning and heating to be simultaneously performed in a plurality of offices or classrooms arranged in one building.

Recently, a duct type air conditioner not only has a function of heating and cooling, but also introduces air from the outside to provide a partial ventilation function.

However, in this case, when the plurality of indoor air guide ducts for guiding the indoor air and the outdoor air ducts for introducing the outside air are arranged inside the building, the air guide ducts may be connected to the casing due to limitations in the installation structure and piping. It is generally arranged to be biased on one side.

In such a structure, when indoor air and outdoor air flow into the casing at the same time, indoor air and outdoor air do not mix well with each other, and flow through the casing in a substantially separated state and flow into the room through a heat exchanger. Occurs.

In this case, it is possible to achieve the purpose of introducing external fresh air, but there is a difficulty in achieving the original purpose of air conditioning to control the indoor air temperature by the deviation of the temperature of the air discharged from one duct A problem occurs.

The present invention was derived to solve this problem, to provide an invention that can be made to smoothly mix the outdoor air and the indoor air flow introduced from the duct type air conditioner having an outdoor air introduction function. There is this.

The present invention for solving the above problems, Casing; and a first inlet provided in the casing to guide the introduction of outdoor air; A second inlet provided in the casing to guide the inflow of indoor air; Provided within the casing provides a duct type air conditioner comprising a guide device for guiding the outdoor air and mixing with the indoor air.

In addition, the casing further comprises a heat exchanger, wherein the guide device is characterized in that disposed between the heat exchanger and the first inlet.

In addition, the guide device is composed of a fan unit disposed in front of the first inlet.

The fan unit includes a fan housing; A blowing fan provided inside the fan housing; A suction port provided in the fan housing and disposed to face the first inlet port; It characterized in that it comprises a discharge port disposed so that the indoor air introduced by the second inlet facing the flow path flows.

In addition, the blowing fan is characterized in that composed of a sirocco fan.

And, the first inlet is provided to be biased to one side of the casing, the fan unit is characterized in that it is provided close to the inner wall of the casing to correspond to the position of the first inlet.

In addition, the first opening and closing damper provided on the side of the first inlet opening and closing the first inlet; And a second opening / closing damper provided at the second inlet side to open and close the second inlet.

In addition, the first and second inlets are characterized in that the filter for purifying the foreign matter in the air is provided.

The apparatus may further include a sensor disposed close to the first and second inlets to sense a temperature and a wind pressure of air flowing into the first and second inlets.

The duct type air conditioner according to the present invention is a casing; A first inlet provided in the casing and into which outdoor air is introduced; A second inlet provided in the casing and into which air in the room flows; And a guide device that is provided close to the first inlet and adjusts the inflow direction of the outdoor air to mix the indoor air introduced through the second inlet with the outdoor air introduced through the first inlet. .

In addition, the air supply fan unit provided in the casing; And a heat exchanger disposed between the air supply fan unit and the first and second inlets, wherein the guide device is disposed between the heat exchanger and the first inlet.

The guide device may include a first opening / closing damper that is rotatably installed at the first inlet to control opening and closing of the first inlet and wind direction of air flowing out of the first inlet.

The second inlet may be provided in plural and further includes a second opening / closing damper disposed at each of the second inlets to selectively open and close the second inlet.

In addition, the free end of the first opening and closing damper is characterized in that it is disposed toward the flow path formed by the indoor air passing through the second inlet.

According to the present invention, when the external air is introduced, there is an advantage that the non-uniform temperature distribution of the air can be prevented from being smoothly mixed with the indoor air.

As the mixing characteristics of the inside and outside air are improved, heat exchange in the heat exchanger may also be more efficiently performed.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 shows a part of a building in which a duct type air conditioner according to the present invention is installed.

In the building in which the duct type air conditioner 10 according to the present invention is installed, a plurality of indoor spaces R is provided, and the duct type air conditioner 10 is disposed above the indoor space R.

Looking at the configuration of the duct-type air conditioner 10, the casing 10 and the casing 10 to form the exterior, the inside of the casing 10 is provided to suck the air of the indoor and outdoor and back to the indoor space (R) And an air supply fan unit 18 for discharging.

Meanwhile, a heat exchanger 21 is disposed at the rear of the air supply fan unit 18, and a collecting tray 24 for collecting condensate discharged from the heat exchanger 21 is disposed below the heat exchanger 21. do.

A first inlet 27 is provided at one side of the casing 15 and spaced apart from the heat exchanger 21, and a first inlet 27 through which outdoor air is introduced, and indoor air is introduced at one side of the first inlet 27. The second inlet 30 is provided.

In addition, an outdoor air guide duct 36 for guiding the inflow of outdoor air is connected to the first inlet 27, and an indoor air guide duct 33 for guiding the inflow of indoor air to the second inlet 30. Is connected.

The indoor air guide duct 33 is arranged in a branched manner to introduce air from the plurality of indoor spaces (R).

A discharge duct 39 for guiding the air passing through the heat exchanger 21 to the indoor space R is connected to the discharge side of the air supply fan unit 18.

In FIG. 1, RA denotes indoor air flowing in the direction of the indoor air guide duct 33, and SA denotes the indoor air again through the duct-type air conditioner 18 by the discharge duct 39. The air discharged to the indoor space R is shown.

On the other hand, OA means outdoor air.

As shown in Figure 2, the specific appearance of the duct type air conditioner 10 according to the present invention is as follows.

The casing 15 has a substantially rectangular tube shape, and the air supply fan unit 18 is disposed at a side from which air is discharged, and the heat exchanger 21 is spaced apart from the rear of the air supply fan unit 18. do.

One side of the heat exchanger 21 is arranged with refrigerant pipes 21a and 21b into which refrigerant is introduced and discharged.

The first inlet 27 and the second inlet 30 are disposed behind the heat exchanger 21. Here, the second inlet 30 is preferably formed in plurality in order to introduce air in a plurality of indoor space.

The outdoor air guide duct 36 is connected to the first inlet 27, and the indoor air guide duct 33 is connected to the second inlet 30.

Preferably, the first and second inlets 27 and 30 are provided with a filter 40 for purifying air, and the temperature of the indoor air and the outdoor air is located near the first and second inlets 27 and 30. Alternatively, the sensor 40 for sensing wind pressure is preferably disposed.

In FIG. 2, the sensor 40 is disposed inside the outdoor air guide duct 36 and the indoor air guide duct 33, but the present invention is not limited thereto. Do.

In order to open and close the first and second inlets 27 and 30, a first opening and closing damper 27a is rotatably disposed at the first inlet 27, and a second opening and closing damper is disposed at the second inlet 30. 30a) is rotatably arranged.

The reason for installing the first and second opening and closing dampers 27a and 30a is to allow inflow of indoor air and outdoor air to perform a cooling / heating mode, an air inflow mode, and a simultaneous operation mode in the duct type air conditioner 10. To adjust selectively.

A guide device for moving the outdoor air discharged from the first inlet 27 in the flow direction of the indoor air discharged from the second inlet 30 between the heat exchanger 21 and the first inlet 27. 60 is disposed.

The guide device 60 is preferably composed of a fan unit. The configuration of the guide device includes a fan housing 61 forming the exterior thereof, and a blowing fan 62 rotatably provided inside the fan housing 61, and the blowing fan 62 includes: It is connected by a drive motor 64 and a rotating shaft 63 for driving it.

One side of the fan housing 61 is provided with an intake port 66 which is disposed to face the outdoor air and faces the first inlet 27, and on the other side of the fan housing 61 to the blower fan 62. The discharge port 68 for guiding the air discharged by the flow direction of the indoor air is provided.

The discharge port 68 is preferably disposed to face the flow direction of the indoor air.

The guide device 60 is preferably installed at a position corresponding to the position of the first inlet 27. That is, when the first inlet 27 is disposed to be biased to one side of the casing 15 as shown in FIG. 2, the guide device 60 is also installed to be biased in the casing 15 so as to correspond thereto. It is preferable.

In FIG. 2, since the inflow direction of the outdoor air flowing into the guide device 60 and the discharge direction of the outdoor air discharged from the guide device 60 form a substantially vertical state, the blower fan 62 is It is preferable that it is comprised with a sirocco fan or a turbo fan.

Figure 3 shows another embodiment of the present invention.

The components described in FIG. 3 are substantially the same as those of the first embodiment, except that the first opening / closing damper 27 serves as a guide device instead of the guide device composed of a fan unit. The difference is that

Therefore, the description of the components other than this will be omitted to avoid duplication.

The first opening / closing damper 27a is rotatably disposed at the first inlet 27, and the rotation direction of the first opening / closing damper 27a is rotatably disposed toward the inside of the casing 15.

In this case, the first opening and closing damper 27 is disposed to open toward the flow path of the indoor air flowing out of the second inlet 30, and flows in accordance with the opening and closing degree of the first opening and closing damper 27. The wind direction of outdoor air is controlled.

Therefore, in order to mix outdoor air and indoor air, it is preferable to direct the free end of the first opening / closing damper 27a toward the flow path in which the indoor air flows.

In addition, the filter 40 is preferably provided in the outdoor air guide duct (36).

Hereinafter, an operation of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 4, in the first embodiment of the present invention, when the cooling and heating operation and the outdoor air inflow operation are performed at the same time, the refrigerant flows in and out of the heat exchanger 21 through the refrigerant pipes 21a and 21b.

At the same time, the air supply fan unit 18 is operated so that the first opening / closing damper 27a and the second opening / closing damper 30a open the first inlet 27 and the second inlet 30, respectively. do.

Then, the fan unit composed of the guide device 60 is operated.

As described above, when each component is operated, indoor air RA flows into the second inlet 30 along the indoor air guide duct 33, and outdoor air OA is introduced into the outdoor air guide duct 36. Inflow to the first inlet 27 along the ().

At this time, the air introduced into the first inlet 27 is introduced through the inlet 66 of the guide device 60 by the blowing action of the blowing fan 62 and then discharged through the outlet 68. .

At this time, the direction (A) of the air discharged through the outlet 68 is directed to the flow direction (B) of the air flowing out of the second inlet 30, wherein the two air is mixed in the heat exchange Pass the flag 21.

Then, the air passing through the heat exchanger 21 is to be discharged to the indoor space in the state of heat exchange by the air supply fan unit 18. Therefore, the air-conditioning effect on the indoor space may occur while introducing fresh air from the outside.

FIG. 5 shows only the heating and cooling operation in the first embodiment. In this case, the heat exchanger 21 flows in and out of the refrigerant by the refrigerant pipes 21a and 21b.

However, the guide device 60 does not operate, and the first opening / closing damper 27a also closes the first inlet 27 to prevent inflow of external air. However, the second opening and closing damper 30a opens the second inlet 30.

At this time, the second inlet 30 may be fully open or only a part of the second inlet 30 may be opened as necessary.

When the air supply fan unit 18 operates in this state, the indoor air RA flows along the indoor air guide duct 33 to the second inlet 30, and the direction B of the air flows in such a manner. ) Faces the heat exchanger (21).

Then, after passing through the heat exchanger 21 is discharged to the indoor space in the heat exchange state by the blowing action of the air supply fan unit 18.

FIG. 6 shows a case of operating in the external air inflow mode in the first embodiment of the present invention, in which the first opening / closing damper 27a opens the first inlet port 30 so that the external air OA is the casing. (15) To be introduced inside.

However, the second opening and closing damper 30a closes the second inlet 30 to prevent the indoor air RA from flowing into the casing 15.

When the air inflow mode is converted, the blowing fan 62 inside the guide device 60 rotates to introduce external air (OA) through the external air guide duct 36, and thus the external air introduced and discharged ( OA is moved toward the air supply fan 18 again by the suction action of the air supply fan 18 and then discharged into the indoor space.

At this time, since no refrigerant flows through the heat exchanger 21, heat exchange between air and the heat exchanger 21 does not occur.

7 to 9, an operation according to a second embodiment of the present invention will be described.

7 discloses a simultaneous operation mode in which a cooling and heating operation mode and an external air inflow mode occur simultaneously. In this case, the first and second opening / closing dampers 27a and 30a respectively correspond to the first and second inlet ports 27 and 30. Open).

A coolant flows in and out of the heat exchanger 21 through the coolant pipes 21a and 21b.

When the air supply fan unit 18 operates in this state, the outside air OA and the indoor air RA are introduced into the casing 15 at the same time. At this time, when the first opening and closing damper 27a rotates inwardly of the casing 15 and the free end thereof faces the flow direction B of the indoor air RA passing through the second inlet 30. The flow direction (A) of outdoor air (OA) passing through the first inlet 27 is directed toward the flow direction (B) of the indoor air by the guide of the first opening / closing damper 27a and then the indoor It is mixed with air.

In this state, the mixed air passes through the heat exchanger 21 to exchange heat with the heat exchanger 21, and is discharged to the indoor space by the blowing action of the air supply fan unit 18.

FIG. 8 shows a case of operating only in the heating and cooling operation mode in the second embodiment. In this case, the first opening / closing damper 27a closes the first inlet 27 and the second opening / closing damper 30a. Opens the second inlet 30.

In addition, when the air supply fan unit 18 operates while the refrigerant flows into the heat exchanger 21, the indoor air RA is the second inlet 30, the heat exchanger 21, and the air supply. The fan unit 18 is circulated through the heating and cooling operation.

FIG. 9 shows a case where only the external air induction operation mode is operated in the second embodiment.

In this case, a first opening / closing damper 27a opens the first inlet 27, and the second opening / closing damper 30a closes the second inlet 30. On the other hand, since the cooling and heating action is not performed, the refrigerant does not flow through the heat exchanger 21.

When the air supply fan unit 18 operates in this state, the outdoor air (OA) flows into the indoor space through the first inlet 27, the heat exchanger 21, and the air supply fan unit 18. As a result, external fresh air can be supplied.

At this time, since the refrigerant does not flow in the thermal bridge 21, heat exchange to external air does not occur.

On the other hand, the opening and closing damper (27a) may be opened as necessary as possible, or, within a limited range to prevent the supply of external air to be biased only on one side and to be uniformly distributed throughout the casing 15 as a whole. You can also rotate.

1 is a schematic view showing that the duct type air conditioner according to the present invention is applied to a building.

2 is a plan view of a first embodiment of the present invention.

3 is a plan view of a second embodiment of the present invention.

Figure 4 is a plan view showing a simultaneous operation mode in which the air-conditioning operation and the air freshening mode in the first embodiment of the present invention operates at the same time.

Figure 5 is a plan view showing the operation in the heating and cooling operation in the first embodiment of the present invention.

Fig. 6 is a plan view showing operation in the external air filling mode in the first embodiment of the present invention.

FIG. 7 is a plan view showing a simultaneous operation mode in which a cooling and heating operation and an external air induction mode operate simultaneously in the second embodiment of the present invention.

8 is a plan view showing the operation in the cooling and heating operation in the second embodiment of the present invention.

Fig. 9 is a plan view showing operation in the external air filling mode in the third embodiment of the present invention.

<Description of main parts of drawing>

27: first inlet 27a: first opening and closing damper

30: second inlet 30a: second opening and closing damper

33: indoor air guide duct 36: outdoor air guide duct

Claims (14)

Casing; A first inlet provided in the casing to guide the inflow of outdoor air; A second inlet provided in the casing to guide the inflow of indoor air; A duct type air conditioner is provided inside the casing and includes a guide device for guiding outdoor air and mixing the indoor air. The method of claim 1, Further comprising a heat exchanger provided in the casing, The guide device is a duct type air conditioner, characterized in that disposed between the heat exchanger and the first inlet. The method of claim 1, The guide device is a duct type air conditioner, characterized in that consisting of a fan unit disposed in front of the first inlet. The method of claim 3, The fan unit includes a fan housing; A blowing fan provided inside the fan housing; A suction port provided in the fan housing and disposed to face the first inlet port; A duct type air conditioner, characterized in that it comprises a discharge port which is disposed so as to face the flow path through which the indoor air introduced by the second inlet flows. The method of claim 4, wherein The blowing fan is a duct type air conditioner, characterized in that consisting of a sirocco fan. The method of claim 3, The first inlet is provided to be biased to one side of the casing, The fan unit is a duct type air conditioner, characterized in that provided close to the inner wall of the casing to correspond to the position of the first inlet. The method of claim 1, A first opening / closing damper provided at the first inlet side to open and close the first inlet; And a second opening / closing damper provided at the second inlet side to open and close the second inlet. The method of claim 1, The first and second inlets are provided with a filter for purifying foreign matter in the air duct type air conditioner, characterized in that. The method of claim 1, And a sensor disposed close to the first and second inlets to sense a temperature and a wind pressure of air flowing into the first and second inlets. Casing; A first inlet provided in the casing and into which outdoor air is introduced; A second inlet provided in the casing and into which air in the room flows; Duct type air conditioning provided in close proximity to the first inlet and including a guide device for adjusting the inflow direction of the outdoor air to mix the indoor air introduced through the second inlet with the outdoor air introduced through the first inlet. group. The method of claim 10, An air supply fan unit provided in the casing; Further comprising a heat exchanger disposed between the air supply fan unit and the first and second inlets, The guide device is a duct type air conditioner, characterized in that disposed between the heat exchanger and the first inlet. The method of claim 11, The guide device is installed in the first inlet rotatably duct type air, characterized in that composed of a first opening and closing damper for controlling the opening and closing of the first inlet and the air direction of the air flowing out of the first inlet Harmonizer. The method of claim 12, The second inlet is provided in plurality, And a second opening / closing damper disposed at each of the second inlets to selectively open and close the second inlet. The method of claim 11, The free end of the first opening and closing damper is a duct type air conditioner, characterized in that it is disposed toward the flow path formed by the indoor air passing through the second inlet.

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