KR100197693B1 - Inlet opening and shutting device and method of air conditioner - Google Patents

Abstract

The present invention relates to an inlet opening and closing device of the air conditioner for opening and closing the inlet (3) to prevent the inflow of dust or foreign matter from the room during operation of the air conditioner, the foreign matter through the inlet (3) To control the opening angle of the suction grill 34 to open and close the suction port 3 to prevent the inflow, and to adjust the amount of air sucked through the suction port 3 in accordance with the operation mode. A control means 60 and a grill motor driving means 70 for driving the grill motor 31 to open the suction grill 34 at an opening angle corresponding to an operation mode under the control of the control means 60. When the operation of the air conditioner is stopped, the inlet port 3 is closed to prevent foreign substances from entering, and when the air conditioner is operated, the opening angle of the suction grill 34 is adjusted in accordance with the operation mode to adjust the air intake amount. of The control can increase the air conditioning effect.

Description

Intake opening and closing device of air conditioner and its method

1 is a perspective view showing an indoor unit of a conventional air conditioner.

2 is a longitudinal cross-sectional view of FIG.

3 is a perspective view showing the indoor unit of the air conditioner according to an embodiment of the present invention.

Figure 4 is a longitudinal sectional view showing an air conditioner in the inlet opening state according to an embodiment of the present invention.

Figure 5 is a longitudinal sectional view showing an air conditioner in a state in which the inlet is closed in accordance with an embodiment of the present invention.

6 is an exploded perspective view of the opening and closing means applied to the present invention.

7 is a control block diagram of the inlet opening and closing device of the air conditioner according to an embodiment of the present invention.

8 is a detailed circuit diagram of a grill motor driving means applied to the present invention.

9A and 9B are flowcharts showing the inlet opening and closing control operation procedure of the air conditioner according to the present invention.

* Explanation of symbols for main parts of the drawings

3: inlet port 7: outlet port

30: opening and closing means 31: grill motor

32: pinion 33: slide member

34: suction grill 35: guide member

50: power supply means 55: operation operation means

60: control means 65: room temperature sensing means

70: grill motor drive means 75: suction port closing detection means

80: compressor driving means 90: fan motor driving means

100: display means

The present invention relates to an air inlet opening and closing device and a method of opening and closing an inlet to prevent dust or foreign matter from entering the room during operation of the air conditioner.

In the conventional air conditioner, as shown in FIG. 1, a suction grill member 5 having a plurality of suction ports 3 through which indoor air is sucked is installed at the front lower part of an indoor main body 1 (hereinafter, referred to as a main body). In the upper part of the main body 1, the discharge port 7 which discharges the air sucked through the said suction port 3 and heat-exchanged by cold air or warm air is formed in the room.

In addition, the discharge port 7 is provided with a wind direction up and down control plate 9 for adjusting the direction of the air discharged to the room through the discharge port 7 up and down and the wind direction left and right control plate 11 to adjust the left and right, the main body On the front surface of (1), the cover member 13 is fixed to the interior of the indoor unit and protects the interior, and at the bottom of the cover member 13, the operation mode of the air conditioner (strong, weak) And a control unit 15 for adjusting the amount of air and the air direction of the air discharged through the discharge port 7 and the start / stop of the driving, the operation of the US, the silent sound, the turbo operation, and the like.

In addition, as shown in FIG. 2, a filter member 17 is installed inside the suction grill member 5 to filter foreign substances such as dust floating in the indoor air sucked through the suction port 3. The inside of the filter member 17 is provided with a straight heat exchanger 19 to heat the indoor air filtered by the filter member 17 to cold or warm air by latent heat of evaporation of the refrigerant.

In addition, the upper part of the heat exchanger 19 to suck the indoor air through the suction port (3) and at the same time to discharge the air heat exchanged in the heat exchanger 19 to the room through the discharge port (7) indoor fan motor A blower fan 23 (hereinafter referred to as an indoor fan) that rotates in accordance with the driving of the 21 is provided, and an outer side of the indoor fan 23 covers the indoor fan 23 and the suction port 3 at the same time. The duct member 25 is installed to guide the flow of air that is sucked through and discharged to the discharge port 7.

In the air conditioner configured as described above, when the user operates the remote controller or the operation unit 15 to select a desired operation mode and then turns on the operation / stop key (hereinafter referred to as the operation key), the indoor fan motor 21 is driven. As the indoor fan 23 rotates, the indoor air is sucked into the main body 1 through the suction port 3.

The foreign matter such as dust floating in the indoor air sucked through the suction port 3 is removed while passing through the filter member 17, and the indoor air from which the foreign matter such as dust is removed by the filter member 17 is heat exchanger. Heat is exchanged by latent heat of evaporation of the refrigerant flowing in the heat exchanger 19 while passing through (19).

The air heat-exchanged in the heat exchanger (19) is guided upward by the duct member (25) and discharged into the room through the discharge port (7), the air discharged through the discharge port (7) wind direction up and down control plate (9) And the wind direction is adjusted up and down or left and right according to the wind direction angle of the wind direction left and right control plate (11).

However, in the conventional air conditioner configured as described above, since the inlet port 3 is always open even when the air conditioner is not in operation, dust or foreign matter is introduced into the main body 1 through the inlet port 3 so that the heat exchanger 19 There was a problem that the performance of the heat exchanger 19 is lowered by being attached to the surface.

In addition, when the air conditioner is not used for a long time, since the plastic cover must be covered so that dust or foreign matter does not enter the main body 1 through the suction port 3, there is a problem that the appearance is not beautiful.

In addition, regardless of the operation mode, there is a problem that the efficient air conditioning operation can not be performed according to each mode because the suction air volume of the indoor air sucked through the inlet (3) is the same.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to close the inlet when the operation of the air conditioner to prevent the inflow of dust or foreign matter through the inlet The present invention provides an inlet opening and closing device and a method thereof.

Another object of the present invention, by controlling the opening angle of the suction grill according to the operation mode during operation of the air conditioner to control the intake air volume of the indoor air in multiple stages so that the air intake opening and closing of the air conditioner can perform efficient air conditioning operation An apparatus and a method thereof are provided.

In order to achieve the above object, the air inlet opening and closing device of the air conditioner according to the present invention includes a suction inlet for sucking indoor air, a heat exchanger for exchanging indoor air sucked through the inlet, and discharging the heat exchanged by the heat exchanger. An air conditioner having a discharge port and an indoor fan that sucks indoor air through the suction port and discharges air heat exchanged in the heat exchanger into the room through the discharge port, and prevents foreign substances from entering through the suction port. A suction grill for opening and closing the suction port, control means for controlling an opening angle of the suction grill to adjust the amount of air sucked through the suction port according to the operation mode, and an opening corresponding to the operation mode according to the control of the control means. Grill motor drive to drive the grill motor to open the suction grill at an angle It is characterized by being a stage.

In addition, the inlet opening and closing method of the air conditioner according to the present invention includes a inlet opening and closing step of opening and closing the suction grill by driving the grill motor in accordance with the operation and stop signals inputted by the operation operation means, and the operation selected by the operation operation means. An opening control step for controlling the opening angle of the suction grill to adjust the suction air volume according to a mode, a mode discrimination step for determining whether the operation mode is changed by the driving organization means, and a change operation determined in the mode discrimination step Characterized in that it consists of an angle adjusting step of adjusting the suction grill at an opening angle corresponding to a mode.

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

The same parts as those in the conventional configurations shown in FIGS. 1 and 2 designate the same names and the same reference numerals, and overlapping descriptions are omitted.

As shown in FIG. 3, the intake port 3 formed at the lower side of the main body 1 to suck the indoor air so that the indoor air can be smoothly sucked through the intake port 3 during operation of the air conditioner. (3) to open the air conditioner during operation (non-operational) of the air conditioner to prevent dust or foreign matter from entering into the main body 1 through the suction port 3 and at the same time to enhance the appearance Opening and closing means 30 for closing the suction port 3 is provided.

As shown in FIGS. 4 and 5, the opening and closing means 30 has a pinion 32 that is rotated forward and reverse by receiving power from the grill motor 31 and a gear on one side of the pinion 32. The slide member 33 which is bitten and linearly moves up and down according to the forward and reverse rotation of the pinion 32 and the slide member 33 interlock with each other in a linear motion to open and close the suction port 3. A plurality of suction grills 34 and guide members 35 installed on both sides of the suction grill 34 to rotatably support the suction grill 34 and guide the suction grill 34 to be opened and closed. consist of.

As shown in FIG. 6, hinge shafts 34a rotatably supporting the suction grilles 34 are provided at both sides of the suction grill 34, and the slides are provided at one side of the hinge shaft 34a. The projection part 34b which is rotated by the slot groove 33a formed in one side of the member 33 is formed.

And, one side of the guide member 35 is formed with a fixing groove (35a) is rotatably fixed to the hinge shaft (34a) of the suction grill 34, the slide member on one side of the fixing groove (35a) As the 33 moves in a straight line, a guide hole 35b is formed to form an arc so that the protrusion 34b rotates, and a gear part is formed at one side of the slide member 33 to be engaged with the pinion 32. 33b is formed.

Next, a circuit block diagram for controlling the opening and closing operation of the intake port in the air conditioner configured as described above will be described with reference to FIGS. 7 and 8.

As shown in FIG. 7 and FIG. 8, the power supply means 50 converts the commercial AC voltage supplied from the AC power source 101 into a predetermined DC voltage necessary for the operation of the air conditioner, and outputs the same. The operation means 55 is a mode of operation of the air conditioner (automatic, cooling, dehumidification, blowing, heating, etc.) and the air volume and the desired temperature (Ts; hereinafter referred to as the set temperature) of the air discharged through the discharge port 7. In addition to having a plurality of function keys for selecting the operation / stop key (hereinafter referred to as the operation key) to input the operation start signal and the operation stop signal of the air conditioner.

Then, the control means 60 is applied to the DC voltage output from the power supply means 50 to initialize the air conditioner, as well as the air conditioning in accordance with the operation selection signal input by the operation operation means 55 As a microcomputer for controlling the overall operation of the machine, the control means 60 is a grill motor 31 for opening and closing the suction grill 34 in accordance with the operation start / operation stop signal input by the operation operation means (55). At the same time as controlling the power applied to the) and the drive time of the grill motor 31 is countered to control the opening operation of the suction grill 34.

The indoor temperature detecting means 65 is sucked through the intake port 3 to control the indoor temperature to the temperature Ts set by the user by the driving operation means 55 to perform the air conditioning operation of the air conditioner. The temperature (Tr) of indoor air is detected.

In addition, the grill motor drive means 70 receives the control signal output from the control means 60 when the operation start signal and the operation stop signal by the operation operation means 55 to open and close the suction port (3) By driving control of the grill motor 31 to move the suction grill 34, the grill motor driving means 70 is a high level output from the output terminals P1 and P2 of the control means 60. The inverter IC 71 for inverting the open and close control signals of the power supply unit; and the power supply means for driving the grill motor 31 in the forward direction at the time of outputting the low level open control signal inverted by the inverter IC 71. The grill motor 31 is driven in the reverse direction at the time of outputting the low-level closing control signal inverted by the inverter IC 71 and the relay RY1 that is driven by receiving the DC voltage 12V output from 50. The output from the power supply means 50 so as to It receives application of a voltage (12V) is composed of a relay (RY2) to drive.

In addition, the suction port closing detection unit 75 detects whether the suction grill 34 closes the suction port 3 according to the lowered position of the slide member 33 moving downward according to the driving of the grill motor 31. Output to the control means 60, the compressor driving means 80 is the temperature (Ts) set by the user by the operation operation means 55 and the room temperature (sensed by the room temperature sensing means 65) Drive control of the compressor 81 receives the control signal output from the control means 60 according to the difference of Tr.

In addition, in the drawing, the fan motor drive means 90 receives the control signal output from the control means 60 to blow the air heat-exchanged in the heat exchanger 19 to the room rotation of the indoor fan motor 21 By controlling the number, the indoor fan 23 is driven, and the display means 100 is driven by the driving operation means 55 under the control of the control means 60. Silent sound, turbo operation, etc.), the set temperature Ts and the room temperature Tr, as well as the operation state of the air conditioner.

Hereinafter, the operation of the inlet opening and closing device of the air conditioner and the method configured as described above will be described.

9A and 9B are flowcharts showing the operation procedure of the inlet opening and closing control operation of the air conditioner according to the present invention. In Figs. 9A and 9B, S denotes a step.

As an initial condition for explaining the operation of the present invention, it is assumed that the inlet 3 is closed.

First, when power is applied to the air conditioner, the power supply means 50 converts the commercial AC voltage supplied from the AC power source 101 into a predetermined DC voltage necessary for driving the air conditioner, thereby driving each circuit and control means ( Output to 60).

Therefore, in step S1, the DC voltage output from the power supply means 50 is inputted from the control means 60 to initialize the air conditioner.

At this time, the user inputs the operation mode (strong, weak, beautiful, quiet, turbo operation, etc.) and the set temperature (Ts) of the desired air conditioner by operating the operation operation means 55, and presses the operation key, the operation An operation selection signal and an operation start signal (hereinafter referred to as an operation signal) are input from the operation means 55 to the control means 60.

Accordingly, in step S2, the control means 60 determines whether the driving signal is input from the driving operation means 55, and maintains the air conditioner in the operating standby state when the driving signal is not input (NO). The operation of step S2 and below is repeated.

As a result of the discrimination in step S2, when an operation signal is input (YES), the process proceeds to step S3, whereby the control means 60 selects the inlet 3, which is closed, by the operation operation means 55 The grill motor driving means 70 outputs a high level control signal through the output terminal P1 so as to open according to strong, weak, beautiful, quiet, turbo driving, and the like.

Therefore, the high level control signal output from the output terminal P1 of the control means 60 is inverted to a low level through the inverter IC 71 and from the power supply means 50. The relay RY1 is driven by the output DC voltage 12V to close the contact RY1c of the relay RY1.

When the contact RY1c of the relay RY1 is closed, in step S4, an AC voltage is applied from the AC power supply terminal 101 to the winding 31a of the grill motor 31 to drive the grill motor 31 in the forward direction. The pinion 32 coupled to the shaft of the grill motor 31 is rotated, the slide member 933 geared to one side of the pinion 32 is lifted, and the slide member 33 is raised as the slide member 33 is lifted. The slot groove 33a formed to be inclined to a certain degree on one side of the member 33 rises, and the guide hole 35b of the suction grill 34 has an arc shape as the slot groove 33a is raised. Is rotated by the guidance of the hinge shaft (34a) formed on one side of the projection (34b) is fixed to the fixing groove (35a) as the axis of the suction grill 34 is rotated at a predetermined angle to the suction port (3) Open).

In this case, in step S5, the opening driving time of the grill motor 31 is counted by a timer built in the control means 60, and the experiment is performed for a predetermined time (the time required to open the suction grill at an angle corresponding to each operation mode). Data is calculated through the control unit), and if the predetermined time has not elapsed (NO), the control unit returns to the step S4 until the suction grill 34 is opened at an angle corresponding to the selected operation mode. 31) continue to drive.

As a result of the discrimination in step S5, when a predetermined time has elapsed (YES), it is determined that the suction grill 34 is adjusted at the opening angle corresponding to the selected current operation mode, and the flow proceeds to step S6. 70 stops the driving of the grill motor 31 in accordance with the low-level opening control signal output from the output terminal P1 of the control means 60 to complete the opening operation of the suction grill 34.

Subsequently, in step S7, the fan motor driving means 90 drives the indoor fan 23 by controlling the rotation speed of the indoor fan motor 21 under the control of the control means 60.

When the indoor fan 23 is driven, the indoor air starts to be sucked into the main body 1 through the suction port 3, and at this time, the indoor temperature of the indoor air suctioned through the suction port 3 is detected. Sense at the means 65.

Accordingly, in step S8, the indoor temperature Tr sensed by the indoor temperature sensing means 65 is compared with the temperature Ts set by the user to the driving operation means 55, and the driving condition of the compressor 81 is applied. Determine.

The driving condition of the compressor 81 is a case in which the room temperature Tr sensed by the room temperature sensing means 65 is greater than the temperature Ts set by the user during the cooling operation. The indoor temperature Tr sensed by the indoor temperature detecting means 65 is smaller than the temperature Tr set by the user.

As a result of the determination in step S8, if it is not the driving condition of the compressor 81 (NO), the flow returns to the step S7 and repeatedly performs the operation of step S7 or less while continuing to detect the room temperature Tr. In the case of the driving condition of the compressor 81 (YES), the control means 60 determines the operating frequency of the compressor 81 according to the difference between the room temperature Tr and the set temperature Ts. A control signal for driving the compressor 81 is output to the compressor driving means 80.

Therefore, the compressor driving means 80 drives the compressor 81 according to the operating frequency determined by the control means 60.

When the compressor 81 is driven, in step S10, the indoor fan 23 is driven while the indoor air is sucked into the main body 1 through the suction port 3, and the indoor air sucked through the suction port 3 is heat exchanged. Heat is exchanged by cold air or warm air by latent heat of evaporation of the refrigerant flowing in the heat exchanger 19 while passing through the air 19.

The air heat-exchanged by the cold or warm air in the heat exchanger 19 is moved upward and downward or left and right depending on the wind direction angle of the wind direction up and down control plate 9 and the wind direction left and right control plate 11 rotatably installed at the discharge port 7. The air conditioning is performed while this is controlled.

When the operation selection key of the operation operation means 55 is operated during the normal operation of the air conditioner as described above, the key signal corresponding to the operation mode changed from the operation operation means 55 is input to the control means 60.

Accordingly, in step S11, the control means 60 determines whether the driving mode has been changed, and if the driving mode is changed (YES), the control means 60 proceeds to step S12, and the grill motor driving means 70 determines the control means 60. Drive the grill motor 31 according to the control to adjust the opening angle of the suction grill 34 in accordance with the changed operation mode.

When the suction grill 34 is adjusted at the opening angle corresponding to the changed operation mode, the air amount appropriate for the operation mode is sucked through the inlet 3, so that an efficient air conditioning operation can be performed.

At this time, in step S13, the operation key of the operation operation means 55 is turned off to determine whether the operation stop signal is input, and when the operation stop signal is not input (NO), the operation returns to the step S10 to resume normal operation. The operation of step S10 and below is repeatedly performed while continuing.

As a result of the discrimination in step S13, when an operation stop signal is input during normal operation (YES), the control means 60 controls to stop the compressor 81 and the indoor fan motor 21 in the case of YES. The signal is output to the compressor driving means 80 and the fan motor driving means 90.

Therefore, the compressor driving means 80 stops the compressor 81 under the control of the control means 60, and the fan motor driving means 90 controls the indoor fan motor 21 under the control of the control means 60. To stop the driving of the indoor fan 23.

Subsequently, in step S15, the control means 60 sends a high level control signal to the grill motor driving means 70 through the output terminal P2 so as to close the suction port 3 that is open for each operation mode. Output to

Therefore, the high level control signal output from the output terminal P2 of the control means 60 is inverted to a low level through the inverter IC 71 and from the power supply means 50. The relay RY2 is driven by the output DC voltage 12V to close the contact RY2c of the relay RY2.

When the contact RY2c of the relay RY2 is closed, in step S16, an AC voltage is applied from the AC power supply terminal 101 to the winding 31b of the grill motor 31 so that the grill motor 31 is driven in the reverse direction. As the pinion 32 coupled to the shaft of the grill motor 31 is reversely rotated, the slide member 33 geared to one side of the pinion 32 is lowered, and the slide member 33 is lowered. A slot hole 33a formed to be inclined to a certain degree on one side of the slide member 33 descends, and as the slot groove 33a descends, the protrusion 34b of the suction grill 34 has an arc shape. 35b) is rotated by the guide, the hinge shaft (34a) formed on one side of the projection (34b) is fixed to the fixing groove (35a) as the axis of the suction grill 34 is rotated at a predetermined angle to the suction port (3) is closed.

Subsequently, in step S17, the lowering position of the slide member 33 moving downward by the driving of the grill motor 31 is sensed by the intake port closing detecting unit 75, and the control unit 60 detects the inlet closing detecting unit. It is determined whether the suction port 3 is completely closed by receiving the signal sensed by 75, and if the suction port 3 is not completely closed (NO), the flow returns to the step S16 and the suction port 3 is closed. The grill motor 31 is continuously driven until it is completely closed.

As a result of the discrimination in step S17, when the suction port 3 is completely closed (YES), the process moves to step S18 and the grill motor driving means 70 is output from the output terminal P2 of the control means 60. The driving of the grill motor 31 is stopped in accordance with the level closing control signal to complete the closing operation of the suction grill 34.

Subsequently, in step S19, the control means 60 returns to the step S2 while maintaining the air conditioner in the operation standby state until the driving signal is input again by the driving operation means 55, and repeats the operation of step S2 or less. Perform.

According to the inlet opening and closing device and the method of the air conditioner according to the present invention as described above, when the operation of the air conditioner can be closed to prevent inflow of dust or foreign matter through the inlet, When the air conditioner is operated, it is possible to increase the air conditioning effect by controlling the intake air volume of the indoor air in multiple stages by adjusting the opening angle of the suction grill according to the operation mode.

Claims (2)

A suction port for sucking indoor air, a heat exchanger for exchanging indoor air sucked through the suction port, a discharge port for discharging air exchanged by the heat exchanger, and suctioning indoor air through the suction port, An air conditioner having an indoor fan for discharging heat-exchanged air into the room through the discharge port, comprising: a plurality of suction grills that open and close the suction port to prevent foreign substances from flowing through the suction port, and an air conditioner desired by the user. An operation control means for inputting an operation mode of the control unit and an output control signal for adjusting the opening angle of the suction grill to adjust the air volume of the indoor air sucked through the suction port according to the operation mode inputted by the operation operation means; Control means and a control mode to the operation mode in accordance with a control signal from the control means. And a grill motor driving means for driving the grill motor to open the suction grill at a corresponding opening angle and close the suction grill when the air conditioner is stopped. The drive / stop signal judging step for judging whether the drive and stop signals have been inputted from the drive operation means; and if it is determined that the run and stop signals have been input in the run / stop signal judging step, the grill motor is An inlet opening and closing step of opening and closing the opening and closing of the plurality of suction grills, an operation mode signal discrimination step of determining whether a key signal corresponding to an operation mode of the air conditioner is input from the operation operation means, and the operation mode signal discrimination step If it is determined that the operation mode signal is input in the opening angle adjustment step of adjusting the opening angle of the suction grill by driving the grill motor in accordance with the control signal from the control means, and whether the operation mode signal from the operating operation means has been changed The operation mode in the signal change discrimination step of discriminating and the signal change discrimination step Intake opening and closing method of the air conditioner when the call is determined that the change, characterized in that the open angle corresponding to the operation mode change made by the air volume adjusting step of adjusting the air volume of the indoor air sucked by opening the suction grille.