KR100797163B1 - Air conditioner and the method for controlling an air conditioner - Google Patents

Abstract

The air conditioner according to the present invention linearly controls the rotational speed of the motor for blowing air to each room according to the number of dampers opened in each room, thereby more efficiently controlling the amount of air required in each room and the desired temperature required in each room. It is effective to implement.

Description

Air conditioner and the method for controlling an air conditioner

1 is an exploded perspective view showing the indoor unit of the duct type air conditioner according to the present invention

Figure 2a, Figure 2b is an installation example showing an indoor unit installation example of the duct type air conditioner according to the present invention

3 is a perspective view showing a side panel according to the present invention

Figure 4 is an exploded perspective view showing a part of the electric unit inside the present invention

5 is a perspective view showing a blowing unit of the duct type air conditioner according to the present invention

6 is a cross-sectional view showing a blowing unit according to the present invention

7 is a block diagram showing a battlefield unit according to the present invention;

8 is a flow chart showing the operation sequence of the duct-type air conditioner according to the present invention

9 is a first exemplary view showing an operating state of a blower unit and an outdoor unit according to a use condition of a room according to the present invention;

FIG. 10 is a graph illustrating a driving state of a motor of an indoor unit, a motor of an outdoor unit, and a compressor of FIG. 9.

11 is a second exemplary view showing an operating state of a blower unit and an outdoor unit according to a use condition of a room according to the present invention;

12 is a graph illustrating a driving state of a motor of an indoor unit, a motor of an outdoor unit, and a compressor of FIG. 11.

13 is a perspective view showing a second embodiment of the indoor unit according to the present invention;

Figure 14 is an exploded perspective view showing the electric unit according to the present invention

15 is a front view of a sub control box in which the sub control unit according to the present invention is shown;

<Explanation of symbols on main parts of the drawings>

10: main body 12: suction port

14, 16, 114, 116: discharge port 20: blowing unit

30: heat exchanger 40: electric unit

45: main control unit 46: sub control unit

50: base 60: leg

70: motor 80: stator

90: supporter 200, 300: duct

400: damper 402: remote control

404: temperature sensor 500: duct connector

The present invention relates to a duct type air conditioner, and more particularly, to control a blower of an indoor unit that supplies air to a plurality of rooms, and to control a damper that connects the blower and the plurality of rooms to the required room temperature. It relates to an air conditioner for controlling.

In general, an air conditioner is a device for supplying air-conditioned air to an indoor space, and is divided into an integrated type in which components are provided in one product and a separate type composed of an indoor unit and an outdoor unit.

In recent years, due to the space occupied by the indoor unit, the duct type air conditioner for mounting the indoor unit on a ceiling, a wall, a veranda, or the like outdoors on a rooftop, and supplying air-conditioned air from the indoor unit to the room through a duct increases. to be.

However, in the duct type air conditioner according to the prior art, since the blower controlled by the indoor unit is always operated at the same speed regardless of the plurality of room temperatures, the duct type air conditioner does not actively cope with the temperature change of the room and does not satisfy the user's preference. I have a problem.

The present invention has been made to solve the above problems, an object of the present invention is to provide an air conditioner for individually adjusting the amount of air blown in each duct by installing a blower unit in each of the plurality of discharge port rows.

Another object of the present invention is to provide an air conditioner capable of actively coping with a temperature change required in an indoor room by varying the amount of air blown by the indoor unit as well as air conditioning a plurality of rooms through one indoor unit. There is this.

Another object of the present invention is to provide an air conditioner for controlling the dampers installed in the room individually through the sub control unit after configuring the electric unit of the indoor unit as the main control unit and the sub control unit.

In addition, the present invention, when a predetermined amount of blowing in a specific room is required, by controlling the motor of the blowing unit in consideration of the number of the damper and the temperature difference, the air to maintain a constant blowing amount of the air discharged to the specific room There is another purpose to provide a harmonic.

According to a first aspect of the present invention, there is provided a control method of an air conditioner, including: at least one blower unit having a motor installed to blow air into a plurality of rooms, respectively; A main body provided with the blowing unit; A duct connecting the main body and the respective rooms; A damper installed in the duct and adjusting the amount of air supplied from the duct to the respective rooms; It is configured to include an electrical unit for controlling the operation of the blowing unit or the damper,

When a predetermined blow amount is input in at least one of the plurality of rooms, the rotation speed of the motor of the blower unit is determined according to at least one of the number of dampers opened in the plurality of dampers or the opening and closing degree of the opened dampers. By controlling, it is characterized in that for controlling the blowing amount of the blowing unit.

The air blowing amount is linearly controlled by the electric field unit, and increases proportionally as the number of open dampers increases.

And the blowing amount of the blowing unit is divided into a plurality of specific number of revolutions to operate.

In particular, the motor rotation speed of the blowing unit is

Motor speed = (open number of dampers / total number of dampers) * maximum speed of motor

Is determined.

An air conditioner according to a second aspect of the present invention comprises: an indoor unit including at least one blower unit for blowing air to a plurality of rooms in a room; A duct connecting the indoor unit and the respective rooms; A damper installed in the duct to adjust an amount of air blown through the duct; It is configured to include an electrical unit for controlling the operation of the blowing unit or the damper,

The electrical unit is a main control unit for controlling at least one of the operation number or the operation amount of the blower unit according to at least one of the number of use or the temperature conditions of each room, and the main control unit by sensing the temperature of each room Characterized in that comprises a temperature sensor to transmit to.

Here, the blower unit is configured to include a BLDC motor to change the rotational speed linearly according to the input current.

Each duct is connected to the indoor unit in a different direction, and each blower unit is connected to each duct.

The air conditioner may further include a sub controller configured to control at least one of whether the damper is opened or closed or whether the damper is opened or closed.

In particular, the indoor unit is configured to further include a main body forming an outer shape, at least one blowing unit is installed inside the main body, the outside of the main body duct connector for distributing the air discharged from the plurality of blowing units to each duct Is installed.

According to a third aspect of the present invention, there is provided a control method of an air conditioner, including: at least one blower unit having a motor installed to blow air into a plurality of rooms, respectively; A duct connecting the blower unit and each of the rooms; A damper installed in the duct and adjusting the amount of air supplied from the duct to the respective rooms; An indoor heat exchanger configured to exchange heat between the air blown by the blower unit and the refrigerant; A compressor for supplying a refrigerant to the indoor heat exchanger; It comprises a electrical unit for controlling the operation of at least one of the blowing unit, the damper or the compressor,

When a predetermined blowing amount is input in at least one of the plurality of rooms, the rotation speed of the motor of the blowing unit is controlled according to at least one of the number of dampers opened in the plurality of dampers or the opening and closing degree of the opened dampers. And controlling the amount of air blown by the blower unit, and controlling the refrigerant compression capacity of the compressor according to at least one of the number of dampers opened in the plurality of dampers or the opening and closing degree of the opened dampers.

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

 1 is an exploded perspective view showing the indoor unit of the duct type air conditioner according to the present invention, Figure 2 is an installation example showing an indoor unit installation example of the duct type air conditioner according to the present invention.

As shown in FIG. 1 or 2, the indoor unit of the air conditioner according to the present invention includes a main body 10 having an inlet 12 and a plurality of outlets 14, 16, 114, and 116. The air blowing unit 20 installed inside the main body 10 and connected to any one of the plurality of discharge ports 14, 16, 114, and 116 and installed to shield the suction port 12 is sucked. It comprises a heat exchanger (30) for heat exchange with the air, and the electric unit 40 is installed on the main body 10, the electric component is installed to control the air conditioner.

The main body 10 is provided with a base panel 50, a front panel 52 which is installed upright from the front of the base panel 50, and an upright installation from the side of the base panel 50. The top panel 58 is connected to the side panel 54, the front panel 52, and the side panel 54 and installed on the base panel 50.

Here, four corners of the main body 10 are provided with corner frames 55 and 56, respectively.

In particular, the corner frames 55 and 56 have a lower end connected with the base panel 50, a side end connected with the front panel 52 or the side panel 54, and an upper end thereof with the top panel 58. Connected with

The discharge holes 14, 114, 16, and 116 are formed in the front panel 52 and the top panel 58, respectively.

In addition, the inlet 12 is formed between the corner frame 56 located at the rear side of the main body 10, the heat exchanger 30 is installed to shield the inlet 12, and the heat exchanger 30 ) Is located inside the main body 10.

A leg 60 supporting the base panel 50 is installed below the base panel 50.

On the other hand, as shown in Figure 2, the air blowing unit 20 of the present invention, each duct 200, 300 is connected, each of the ducts 200, 300 are all in the same direction according to the installation direction 2a or in different directions (FIG. 2b).

Thus, the ducts 200 and 300 are connected to a room (not shown) in the room, and the air discharged from the blower unit 20 is supplied to the room of the room through the dampers of the ducts 200 and 300.

3 is a perspective view showing a side panel according to the present invention, Figure 4 is a partial exploded perspective view showing the inside of the electric unit according to the present invention.

3 or 4, the electric unit 40 according to the present invention is installed inside the main body 10 and is shielded by the side panel 54 and is not exposed to the outside.

The side panel 54 is positioned between the corner frames 55 and 56 and is fastened and fixed to the corner frames 55 and 56, the base panel 50, or the top panel 58.

In addition, a handle 53 is installed on the side panel 54, and the handle 53 allows the user to more easily support the side panel 54 when the side panel 54 is separated and assembled. .

Wherein the handle 53 is inserted into a hole (not shown) formed in the side panel 54 is fixed.

Thus, the handle 53 includes a fitting portion 53a into which the side panel 54 is inserted into and inserted into a hole, and an adhesive portion 53b in close contact with an outer surface of the side panel 53. A groove 53c is formed in the fitting portion 53a toward the fitting portion 53a.

In this case, the user inserts a hand into the groove 53c to support the side panel 54.

In addition, although not shown, the side panel shielding the electrical unit 40 is often opened during the service of the service provider, by connecting the upper end hinged to the corner frame 55 in the up / down direction or left / right direction It may be installed in an open structure.

The electric unit 40 is fitted to the corner frames 55 and 56 and then fastened and fixed by bolts or screws.

Here, the electrical unit 40 has a control box 42 fitted to the corner frames 55 and 56, a main controller 45 installed in the control box 42, and a sub controller ( 46), a motor driver (not shown) for supplying power to the blower unit 20, and an IPM (not shown, IPM: Intelligent Power Module) for supplying DC power to the motor driver (not shown). It is configured by.

The IPM is an IGBT (Insulated Gate Bipolar Transistor) and a driver IC for driving the same in a single package. Recently, IPM has been developed and sold for various devices as a power management solution for high-capacity motor control. In addition, the IPM includes various protection circuits such as a driving driver IC, an overcurrent protection circuit, a short circuit protection circuit, and is advantageous in reducing the size of the motor driver and implementing low power and miniaturization.

The control box 42 is formed in a box shape, the main control unit 45 is installed therein, and the side direction in which the side panel 54 is installed is opened. In particular, the control box 42 is shielded when the side panel 54 is installed and is not exposed to the outside.

Meanwhile, the main controller 45 of the electric unit 40 controls the motor 70 of the blower unit 20, and the sub controller 46 controls the damper of the duct 200, which will be described later, to be supplied to the room. Control the air.

5 is a perspective view showing a blowing unit of the duct type air conditioner according to the present invention, Figure 6 is a cross-sectional view showing a blowing unit according to the present invention.

Blowing unit 20 according to the present invention is a blowing unit frame 22 fixed to the main body 10, a fan 24 for discharging the air in the main body 10 to the discharge port 14, and the fan ( And a fan housing 28 for guiding the air 70 blown by the fan 24 to the discharge port 14.

Here, the blowing unit 20 is a sirocco fan that sucks air from both sides of the fan housing 28.

The blower unit frame 22 is for fixing the fan housing 28 to the base 50, and is formed in a frame shape of a rectangular parallelepiped, and the fan housing 28 is fastened and fixed therein.

The blower unit frame 22 is provided with a cover 21 to shield any one of each of the discharge ports 14, 16, 114, and 116 formed in the top panel 58 or the front panel 52. do.

That is, as shown in Figure 2, when the front side discharge port 14 is open, the cover 21 provided in the blowing unit frame 22 shields the discharge port 16 formed in the top panel 58, When the upper discharge port 114 is opened, the cover 21 of the blower unit 20 shields the front discharge port 114 of the top panel 58.

Here, the cover 21 and 23 are installed on the upper and lower surfaces of the blowing unit frame 22, and the assembly or installer rotates the blowing unit frame 22 to which the fan housing 28 is fixed. One of the covers 21 and 23 provided in the unit frame 22 shields either the front discharge port 14 or the upper discharge port 16.

Wherein the cover 21, 23 is provided to form a continuous surface with the surface of the top panel 58 or the front panel 52, protrudes from the top panel 58 or the front panel 52 It forms a smooth side.

In particular, the covers 21 and 23 are integrally assembled to the blowing unit frame 22 and installed on the base 50. After installation of the blowing unit 20, the front panel 52 or the The top panel 58 is installed, and the shielding process of the discharge ports 14 and 16 is performed in the process of installing the blower unit 20.

Thus, the air conditioner according to the present invention does not require a process of installing a separate cover when shielding any one of the discharge ports 14.

Meanwhile, the blower unit 20 according to the present invention uses a BCD motor 70 (hereinafter referred to as a brushless DC motor) to drive the fan 24, and the BLCD motor 70 is a supporter. It is fixed to the fan housing 28 by 90.

The fan housing 28 is fixed to the blowing fan frame 22, and suction inlets 28a and 28b are formed on the left and right sides, respectively, and the motor is disposed on either of the suction ports 28a and 28b. 70 is installed.

Here, the suction openings 28a and 28b of the fan housing 28 are respectively recessed inwardly to form a shroud.

The fan 24 is a kind of cross flow fan, which is formed to be long in the left / right direction in this embodiment, and the motor 70 is fixed to the fan housing 28 and connected to the fan 24.

As shown in FIG. 5 or FIG. 6, the motor 70 includes a shaft 71 connected to the fan 24, a rotor 72 connected to the shaft 71, and the rotor 72. It is configured to include a stator (80) positioned inside the rotor 72 spaced apart from the rotor (72), and a supporter (90) for fixing the stator (80) to the fan housing (28).

The shaft 71 is fastened and fixed to the rotor 72 and positioned at the center of the fan 24, and fastened and fixed to the fan 24.

Here, the BLDC motor 70 may be linearly controlled by the input current, and the BLDC motor 70 may control the amount of blown air discharged by being controlled by the main controller 45 of the electric unit 40.

In particular, in the present invention, since the plurality of BLDC motors 70 respectively controlled by the main controller 45 are installed in the indoor unit, the amount of air discharged to the ducts 200 and 300 can be adjusted. .

7 is a block diagram illustrating a battlefield unit according to the present invention.

As shown in FIG. 4 or FIG. 7, the electrical unit 40 according to the present invention interacts with the main controller 45 and the main controller 45 for controlling the motor 70. Sub control unit 46 for controlling the damper 400 of the 300, a remote control unit 402 for inputting a signal to the main control unit 45, a temperature sensor 404 for sensing the temperature of the room, It is configured to include a display control unit 405 for displaying the operating state of the indoor unit.

The main control unit 45 is connected to the remote control unit 402, the display control unit 405, and the sub control unit 46, and interoperates with each other, and the signal received from the temperature sensor 404 is controlled by the sub control unit 46. It is transmitted to the main control unit 45 through the).

Herein, the remote controller 402 is a wired remote controller connected to the main controller 45, and the wired remote controllers are installed in each room to receive a signal from a user. In particular, the remote control 402 is a wired remote control in the present embodiment, but a wireless remote control may be used.

The main controller 45 controls the motor 70 by comparing the temperature sensed by the temperature sensor 404 with a signal input through the remote controller 402, and the sub controller 46 controls the remote controller. The damper 400 is controlled according to the signal input from 402 and the signal transmitted from the main controller 45.

On the other hand, the damper 400 is a general structure for blocking or communicating the air moving along the duct 200, 300, a damper plate (not shown is installed along the duct 200, 300) In addition to blocking / communicating the movement of the moved air, the air blowing amount of the air is also adjusted according to the opening and closing degree of the damper plate, which is rotated by a predetermined angle. do.

Hereinafter, the operation of the air conditioner according to the present invention will be described in more detail with reference to FIG. 8.

8 is a flow chart showing the operation sequence of the duct type air conditioner according to the present invention.

As shown in Figure 7 or 8, when the air conditioner according to the present invention is activated (S10), the main control unit 45 of the indoor unit transmits the temperature of each room from the temperature sensor (404a ~ 404d) installed in each room In addition to receiving, the desired temperature is received from the remote controller 402 installed in each room. (S20)

The desired temperature input from the remote controller 402 to the main controller 45 may be directly input by the user, or a temperature stored in the main controller 45 may be input.

Next, the main controller 45 compares the input desired temperature with the indoor temperature (S30), and determines whether to supply air-conditioned air to each of the rooms by the difference between the indoor temperature and the desired temperature.

Here, when there is no user in the room among the plurality of rooms or when the remote controller 402 is turned off by the user, the main control unit 45 determines that the off-room is not used to air in the off-room. Do not blow it.

In addition, the main controller 45 does not blow air to the turned-on room when the difference between the desired temperature and the room temperature is small even when the remote controller 45 is turned on.

That is, the main control unit 45 blows air to the turned-on room only when the room is not used but only when the temperature difference between the desired temperature and the room temperature is more than a predetermined temperature.

Through this, the main controller 45 operates the blower unit 20 by applying a current to the blower unit 20 connected to the turned-on room among the plurality of blower units 20 and according to the magnitude of the temperature difference. By controlling the operation speed of the blowing unit 20 determines the amount of blowing air supplied to the on-room (S42).

In particular, the main controller 45 determines the blowing amount of the blower unit 20 in consideration of the signal input from the user and the calculated temperature difference between the desired temperature and the room temperature.

Here, the signal input from the user may be, for example, the strength of the air volume input by the user through the remote controller 402.

That is, when the user inputs a strong wind through the remote controller 402, the main controller 45 immediately rotates the number of revolutions of the motor 70 corresponding to the strong wind in consideration of only the amount of air to be provided to the room. Instead of switching to the number, the number of rooms to which the blower motor 20 supplies air and the amount of air required in each room are calculated to increase or decrease the rotation speed of the motor 70.

Meanwhile, the damper 400 installed in the unused room or the off room is closed to block the air supplied from the blower unit 20 from being supplied to the open room, and the damper connected to the room through which the air is blown ( 400 is opened so that the air supplied from the blowing unit 20 can be supplied to the room. (S44)

So, as shown in the drawing, when two rooms are connected to one blower unit 20 and only one of the rooms is to be supplied with strong wind air, the main controller 45 is a damper 400 of the turned off room. ) And only the damper 400 of the turned-on room is opened to blow air.

In particular, the main control unit 45 blows air to the on-room by reducing the amount of air supplied to the off-room to supply the air-flow required in the room.

That is, when the on-room wants strong winds, the main controller 45 rotates the motor 70 only by the number of revolutions for supplying strong winds to one room.

On the contrary, when strong winds are required in two rooms at the same time, the number of rotations of the blower unit 20 is increased more than when strong winds are required in only one room as described above.

In this case, the motor 70 is a BLDC motor, and the rotation speed can be linearly controlled by the main control unit 45, and through the ducts 200 and 300 according to the use conditions and the air volume of the room. The blowing amount of the blown air can be adjusted linearly.

The main controller 45 determines whether to operate the outdoor unit according to the conditions and conditions of the room.

That is, when there is no cooling / heating capacity required in an indoor room, the outdoor unit does not operate naturally, and when the cooling / heating capacity is required in any one of the indoor rooms, the main controller 45 determines this. The compressor driving capacity and the rotation speed of the outdoor fan of the outdoor unit are determined.

Next, when a predetermined time elapses after determining whether the blower unit 20 is driven, the blower amount is determined, whether the damper is opened or closed, and whether the outdoor unit is operated by the main unit 45, the main unit 45 blows the air. In order to determine whether the unit 20 is driven, the air volume is determined, whether the damper is opened or closed, and whether the outdoor unit is operated again, the temperature sensor 404 senses the room temperature again, and the detected room temperature is again detected. Repeat the above-described process (S20 ~ S50) by comparing with the desired temperature. (S60)

9 is a first exemplary view showing an operating state of a blower unit and an outdoor unit according to a use condition of a room according to the present invention, and FIG. 10 is a driving state of a motor of an indoor unit, a motor of an outdoor unit, and a compressor of FIG. It is a graph.

As shown in FIG. 9 or FIG. 10, in the first operation example of the air conditioner according to the present invention, when the wind speed required for the indoor room is divided into strong, medium, and weak, the dampers 400a to 400d are opened. The operation state of the outdoor unit fan, the compressor and the blower unit 20 varies depending on whether the door is open or closed.

For example, if the wind speed required indoors is a strong wind, and only one of the dampers 400a to 400d is opened, the compressor and the outdoor fan of the outdoor unit are operated and the blower unit 20 has a low speed despite the demand of the strong wind. To rotate the fan 24.

Here, the main control unit 45 discharges the air discharged to the blower unit 20 even though the fan 24 is rotated at a low speed by applying a predetermined current to the motor 70 of the blower unit 20. Since all are concentrated in one room, the amount of blowing of the strong wind required by the user is formed.

And as the number of openings of the dampers 400a to 400d connected to the room increases, the rotation speed of the fan 24 by the motor 70 increases, and the air blowing amount increased by the increased number of rotations of the fan is Disperse | distributed to each damper 400a-400d, the appropriate amount of air flow is formed in each room.

On the other hand, as shown in Figure 10, the motor 70 according to the present invention is divided into three steps in this embodiment is operated.

That is, the main controller 45 adjusts the rotation speed of the motor 70 to three by applying a signal in three waveforms when applying current to the motor 70.

In addition, the outdoor fan and the compressor are turned on / off by the operation of the outdoor unit, and operate only in a constant state according to the on / off.

Thus, when the blower unit 20, the outdoor fan, and the compressor of the indoor unit are operated in a predetermined pattern as described above, the main unit 45 has the blower unit 20, the outdoor fan, and the compressor by some combination. It is possible to adjust the operating status of the controller, which simplifies the control method.

11 is a second exemplary view showing an operating state of a blower unit and an outdoor unit according to a use condition of a room according to the present invention, and FIG. 12 is a driving state of a motor of an indoor unit, a motor of an outdoor unit, and a compressor of FIG. 11. It is a graph.

The second exemplary view according to the present invention controls the amount of air discharged to the room more precisely by linearly controlling the speed of the motor 70 of the indoor unit blowing unit 20 according to the required wind speed of the room.

Thus, as shown in FIG. 11, when the required blowing amount of the indoor room is a strong wind and there is one open damper 400a to 400d, the motor 70 of the blowing unit 20 is 25% of the maximum rotational speed. 50% when two dampers 400a-400d are opened, 75% when three dampers 400a-400d are open, and 100% when all are operated.

Here, the rotation speed of the motor 70 of the blowing unit 20 is

"Motor speed = (open number of dampers / total number of dampers) * maximum speed of motor"

The air flow rate is determined at the air flow rate, and is applied at different ratios for the air flow required in the room.

That is, in the case of strong wind, the maximum rotational speed of the motor is still applied to 100%, but in the case of heavy wind or mild wind, the maximum rotational speed of the motor is reduced to 90% or 80%.

In particular, the main control unit 45 adjusts the amount of blown air discharged by linearly controlling the rotational speed of the motor 70 is operated when the required amount of blowing air is strong wind.

Next, when the required blow amount of the indoor room is a middle wind, and the dampers 400a to 400d are one open, the motor 70 of the blower unit 20 is operated at 22.5% of the maximum rotational speed, and the open damper ( 45% for two 400a to 400d), 67.5% for three open dampers 400a to 400d, and 90% for all operated.

In addition, when the required air blowing amount of the indoor room is a weak air and there is one open damper (400a ~ 400d), the motor 70 of the blowing unit 20 is operated at 20% of the maximum rotational speed, the open damper (400a) ~ 400d), 32% for two, 60% for three open dampers 400a ~ 400d, and 80% for all operated.

Thus, in the second example of the present invention, the number of rotations of the motor 70 of the blower unit 20 for discharging air to the respective rooms according to the amount of air or wind speed required in the room and the number of open dampers 400a to 400d. Linear control, through which it is possible to more precisely maintain the wind speed of the air discharged to each room.

In particular, as shown in FIG. 12, when the air volume / wind speed required in the room and the number of open dampers 400a to 400d are changed, the operating state of the outdoor fan and the operating state of the compressor are also adjusted.

That is, as the number of openings of the dampers 400a to 400d installed in each room increases, the load of the compressor also increases step by step as the amount of air volume / wind velocity required in each room increases, and the load of the outdoor fan also increases. Incremented step by step.

Here, the relationship between the compressor and the dampers 400a to 400d shown in FIG. 11 or 12 will be described.

First, when the amount of air required in the room is a strong wind or a medium wind, and one open damper (400a ~ 400d) is one, the compressor of the outdoor unit is operated at 40% of the total compression amount in one step, the open damper (400a ~) If 400d) is two, it is operated at 60% as two stages, and if it is three or more, it is operated at 100% as three stages.

And if the amount of air required in the room is a weak air, and one or two open dampers (400a ~ 400d), the compressor of the outdoor unit is operated at 40% of the total compression amount as a first stage, the open damper (400a ~) If 400d) is 3 or more, it is operated at 60% as a second stage.

Therefore, the compressor is operated to adjust the amount of compression of the refrigerant according to the increase and decrease of the load required in the room.

On the other hand, the outdoor blowing fan installed in the outdoor unit increases the rotational speed of the fan, as shown in Figure 11 or 12, in order to increase the heat exchange efficiency of the refrigerant as the refrigerant compression amount of the compressor is increased.

In addition, the first and second exemplary views shown in FIGS. 9 and 11 are merely examples for explaining the use example of the BLDC motor, and the spirit of the present invention is not limited to the exemplary diagrams, but the number of rooms and the air flow rate may be determined according to the example of FIG. It can be variously applied according to the number of steel / medium / quantity) or the number of dampers.

FIG. 13 is a perspective view showing a second embodiment of an indoor unit according to the present invention, FIG. 14 is an exploded perspective view showing an electric equipment unit according to the present invention, and FIG. 15 is a view of a sub control box showing a sub control unit according to the present invention. Front view.

As shown in Figure 13 to 15, the indoor unit according to the present invention is installed on the air discharge side of the main body 10, a plurality of air blowing unit is installed, the air discharged from the air blowing unit is joined It is configured to include a duct connector 500 and the electric field unit 600 is installed on one side of the main body 10 to control the blowing unit and the like.

Here, the duct connector 500 is installed in communication with the discharge ports 14 and 16 of the main body 10 to collect the air discharged from the plurality of air blowing units 20 into one, and the collected air is connected to the duct 200 To pass).

In particular, a plurality of ducts 200 are connected to the duct connector 500, each of the ducts 200 is connected to a room in the room, and each of the ducts 200 is provided with dampers 400a to 400e. Shut off / communicate the air discharged to the room.

The electrical unit 600 includes a main controller 45 and a sub controller 46 as in the first embodiment. In the second embodiment, the sub controller 46 is integrated with the main controller 45. It is not configured to be configured separately and connected to the main control unit 45.

Thus, the electrical unit 600 is fixed to the main body 10, the main control unit 45 is installed and the sub control unit 46 is selectively assembled with the main control unit 45 and connected to the main control unit 45. It is composed of

In particular, the electrical unit 600 includes a main control box 602 assembled to the main body 10 and a sub control box 604 assembled to the main control box 602. The main controller 45 is installed at 602, and the sub controller 46 is installed at the sub control box 604.

In addition, the main controller 45 and the sub controller 46 are connected through a connector (not shown) to transfer signals to each other.

Here, the structures of the main controller 45 and the sub controller 46 are the same as those of the first embodiment, and the configuration is also the same as that shown in FIG.

However, the sub controller 46 of the second embodiment is selectively connected to and operated by the main controller 45. The air conditioner of the second embodiment is driven by the main controller 45 alone.

Here, when the sub controller 46 is not installed in the air conditioner, the air conditioner opens and closes the dampers 400a to 400e performed by the sub controller 46 and senses the room temperature by the temperature sensor 404. Do not perform such.

However, the air conditioner operates by receiving a temperature through another temperature sensor (not shown) in the room instead of the temperature sensor 404 connected to the sub controller 404.

Thus, although the air conditioner according to the second embodiment has a plurality of ducts 200 and dampers 400a to 400e installed, it is preferable to install the air conditioners in places or buildings that do not require separate control of the dampers 400a to 400e.

The air conditioner according to the present invention configured as described above by linearly controlling the rotational speed of the motor for blowing air to each room according to the number of dampers in each room, the amount of blowing required in each room and required in each room It is effective to realize the desired temperature more efficiently.

In addition, the present invention can not only control the temperature or the blowing amount of each room by controlling the dampers installed in each room, but also by controlling the motor rotation speed of the blowing unit installed in the indoor unit even if a plurality of rooms and one indoor unit are connected. In addition, there is an effect of discharging the amount of air blown by the user from the open damper.

In particular, the present invention reduces the number of rotations of the motor by the number of closed dampers, not only to prevent excessive air supply to the user's room, but also to prevent over-operation of the blower unit, thereby improving power efficiency.

In addition, the present invention has an effect that can be installed more easily in a building with a plurality of rooms because a plurality of blowing units are installed in the indoor unit and can be installed in different directions of the ducts connected to the respective blowing units.

In addition, the present invention is the electric control unit is composed of a main control unit for controlling the motor of the blower unit and a sub control unit for controlling the damper of the duct, the sub control unit is detachably installed with the main control unit, if necessary, There is an effect that can drive the harmonic.

Claims (11)

At least one blower unit having a motor installed to blow air into a plurality of rooms in the room; A main body provided with the blowing unit; A duct connecting the main body and the respective rooms; A damper installed in the duct and adjusting the amount of air supplied from the duct to the respective rooms; It includes an electric charge unit for controlling the operation of the blowing unit or the damper, When a predetermined air volume is input in at least one of the plurality of rooms, The control method of the air conditioner for controlling the blowing amount of the blower unit by controlling the rotational speed of the motor of the blower unit according to at least one of the number of dampers opened in the plurality of dampers or the opening and closing degree of the damper. The method according to claim 1, The airflow control method of the air conditioner, characterized in that the linear control by the electric unit. The method according to claim 1, And a blowing amount of the blowing unit increases proportionally as the number of open dampers increases. The method according to claim 1, The blowing amount of the blowing unit is controlled by the air conditioner, characterized in that divided into a plurality of specific operating speed. The method according to any one of claims 1 to 4, The motor rotation speed of the blowing unit is Motor speed = (open number of dampers / total number of dampers) * maximum speed of motor Control method of an air conditioner, characterized in that determined by. An indoor unit including at least one blowing unit for blowing air to a plurality of rooms in the room; A duct connecting the indoor unit and the respective rooms; A damper installed in the duct to adjust an amount of air blown through the duct; It is configured to include an electrical unit for controlling the operation of the blowing unit or the damper, The electric unit is a main control unit for controlling at least one of the number of operation or the amount of operation of the blower unit according to at least one of the number of use or the temperature conditions of each room, And a temperature sensor for sensing the temperature of each room and transmitting the temperature to the main controller. The method according to claim 6, The air blowing unit is characterized in that it comprises a BLC motor (BLDC motor) for changing the rotational speed linearly according to the input current. The method according to claim 6, Wherein each duct is connected to the indoor unit in a different direction, and each air blowing unit is connected to each of the ducts. The method according to any one of claims 6 to 8, And a sub controller configured to control at least one of opening and closing of the damper or opening and closing degrees of the damper. The method according to any one of claims 6 to 8, The indoor unit is configured to further include a main body forming an outer shape, at least one blowing unit is installed inside the main body, the outside of the main body is a duct connector for distributing the air discharged from the plurality of blowing units to each duct An air conditioner, characterized in that installed. At least one blower unit having a motor installed to blow air into a plurality of rooms in the room; A duct connecting the blower unit and each of the rooms; A damper installed in the duct and adjusting the amount of air supplied from the duct to the respective rooms; An indoor heat exchanger configured to exchange heat between the air blown by the blower unit and the refrigerant; A compressor for supplying a refrigerant to the indoor heat exchanger; It comprises a electrical unit for controlling the operation of at least one of the blowing unit, the damper or the compressor, When a predetermined air volume is input in at least one of the plurality of rooms, In addition to controlling the blowing amount of the blower unit by controlling the rotational speed of the motor of the blower unit according to at least one of the number of dampers opened in the plurality of dampers or the opening and closing degree of the damper, And controlling the refrigerant compression capacity of the compressor according to at least one of the number of dampers opened in the plurality of dampers or the degree of opening and closing of the opened dampers.

Images