KR100307829B1 - Heating operation device and method of air conditioner - Google Patents

Abstract

The present invention relates to a heating operation apparatus and a method of an air conditioner, and an indoor heat exchanger for heat-exchanging air circulated by an indoor fan, and to control the wind direction of the air heat-exchanged by the indoor heat exchanger according to the driving of the stepping motor. An apparatus for operating an air conditioner having a wind vane and performing an indoor heating operation according to a driving of a compressor, wherein the indoor heat exchanger is removed for removing latent heat of the indoor heat exchanger when the heating operation is stopped due to the stop of the compressor. An indoor fan motor driving means for driving a fan, a wind direction adjusting means for driving a stepping motor to position the wind direction angle of the wind vane upward when the heating operation is stopped, and sensing an indoor piping temperature of the indoor heat exchanger The indoor piping temperature sensing means and the indoor piping temperature sensing means at the time of stopping the heating operation due to the stop of the compressor. When the indoor piping temperature detected by the indoor heat exchanger reaches a predetermined latent heat removal temperature, the indoor fan motor driving means is driven to drive the indoor fan for latent heat removal, and the wind direction control means is driven to control the Characterized in that the control means for performing a control for positioning the angle of the wind vane upward.

Description

Heating operation device and method of air conditioner

The present invention relates to an operating device of an air conditioner that performs heating and cooling operation, and in particular, in the heating operation of the indoor fan to remove the latent heat of the indoor heat exchanger after the compressor is turned off because the indoor temperature reaches the set temperature during the heating operation. The present invention relates to a heating operation apparatus and a method of an air conditioner that fixes the wind vane upward to prevent cold air from being discharged in a direction in which a user is located.

In general, an air conditioner includes a heating device that warms indoor cold air and supplies it to a room, and a cooling device that supplies cold indoor hot air to a room.

In addition, there is also a cooling and heating device that combines the cooling function and the heating function, a situation that includes a clean function to clean the contaminated indoor air.

1 shows an indoor unit of a cooling and heating device (commonly referred to as an air conditioner) that performs a cooling and heating function among the air conditioners.

Of course, the air-conditioning device of course includes an outdoor unit not shown.

As shown in FIG. 1, reference numeral 1 denotes an indoor main body (hereinafter, referred to as an indoor unit) of an air conditioner, and an intake port 3 for inhaling indoor air is formed in an upper portion of the front of the indoor unit 1, In the lower part of the front surface of the indoor unit 1, a discharge port 5 for discharging air (cold or warm air) heat-exchanged by an indoor heat exchanger to be described later is formed.

In addition, a remote control signal receiver 7 for receiving a remote control signal transmitted from a remote controller 9 (hereinafter referred to as a remote controller) is provided on the right side of the discharge port 5, and the discharge port 5 is provided with the discharge port ( Wind vane 11 for adjusting the direction of the air discharged into the room through 5) is installed.

On the other hand, the remote control 9, the operation / stop, operation selection (automatic, cooling, dehumidification, blowing, heating, etc.) of the air conditioner, air volume selection (strong wind, weak wind, breeze, etc.), turbo, mild, temperature control, etc. A plurality of operation mode keys for input and a plurality of timer mode keys for inputting a current time, a simple reservation, a start / end reservation, and the like are provided.

FIG. 2 is a side cross-sectional view of the indoor unit of FIG. 1 in a state where the indoor unit is installed on a wall, and the same components as in FIG.

As shown in FIG. 2, the inside of the indoor unit 1 has a linear shape at the rear side of the intake port 3 so as to heat-exchange the indoor air sucked through the intake port 3 with cold or warm air by the latent heat of evaporation of the refrigerant. An indoor heat exchanger (15) is installed, and at the rear lower portion of the indoor heat exchanger (15), the air is sucked into the indoor air through the intake port (3) and at the same time, the air heat exchanged in the indoor heat exchanger (15) is discharged. An indoor fan 17 for discharging into the room through (5) is provided.

In addition, a duct member 19 is installed inside the indoor unit 1 to guide the flow of air sucked through the suction port 3 and discharged to the discharge port 5, and the indoor heat exchanger 15 is provided. The lower portion of the water in the air generated by the mixing of the air and the indoor air discharged when the indoor air sucked through the inlet (3) by the cold or warm air in the indoor heat exchanger 15, that is, defrost water Is collected in one place and the drain 21 for draining to the outside is provided.

In the air conditioner configured as described above, the user operates the remote controller 9 to press the operation / stop key (hereinafter referred to as the operation key), and then the desired operation mode (for example, heating) and the set temperature Ts. And inputting the set wind direction, the remote control signal corresponding to the key input is encoded by a predetermined protocol, and the encoded signal is modulated to transmit an infrared signal.

When the infrared signal is transmitted from the remote control unit 9, the remote control signal receiving unit 7 of the indoor unit 1 receives it, converts it into an electric signal, and demodulates the converted electric signal to start operation of the indoor unit 1. .

At this time, if the indoor sensor 1 detects the room temperature Tr at the position where the indoor unit 7 is located in the indoor unit 1, the indoor unit 1 transmits the set temperature Ts and the room transmitted from the remote controller 9. The operation frequency of the compressor 30 is determined according to the difference of the temperature Tr to turn on the compressor 30.

When the compressor 30 is turned on, as the refrigerant is shown in the direction of the dotted arrow in FIG. 3, the compressor 30 → the four-way valve 35 → the indoor heat exchanger 15 → the capillary tube 50 → the heating capillary tube 60. ) → The outdoor heat exchanger (40) → the four-way valve (35) → the compressor (30) to form a refrigerant cycle circulated in order to heat the indoor heat exchanger (15), the indoor air sucked into the indoor unit (1) is indoor heat exchanger Heat-exchanged with warm air while passing through the (15) is discharged into the room through the discharge port 5 under the guidance of the duct member 19, the warm air discharged through the discharge port (5) to the wind direction angle of the wind vane (11) According to the wind direction is controlled according to the room heating.

When the heating operation is performed for a predetermined time and the room temperature Tr reaches the set temperature Ts, the compressor 30 is turned off, and the latent heat of the indoor heat exchanger 1i is maintained even after the compressor 30 is turned off. In order to remove, the indoor fan 17 is turned on until the temperature of the indoor heat exchanger 15 becomes 20 ° C or lower.

By the way, in the conventional heating operation method, the wind vane 11 is operated by the remote control unit at the time of turning on the indoor fan 17 for removing the latent heat of the indoor heat exchanger 15 after the compressor 30 is turned off. Since it is fixed or swings at a predetermined wind angle according to the set wind direction inputted by 9), there is a problem that the cold wind generated from the indoor fan 17 is directly discharged to the user's position, thereby causing discomfort to the user.

Accordingly, the present invention has been made in order to solve the above-mentioned conventional problems, and during the heating operation of the indoor fan to remove the latent heat of the indoor heat exchanger after the compressor is turned off because the indoor temperature reaches the set temperature during the heating operation. It is an object of the present invention to provide a heating operation apparatus and a method of an air conditioner to fix the wind vane upwards so that the cold air is not directly discharged to the user.

In order to achieve the above object, a heating operation apparatus of an air conditioner according to the present invention includes an indoor heat exchanger for heat-exchanging air circulated by an indoor fan, and a wind direction of air heat-exchanged by the indoor heat exchanger in accordance with driving of a stepping motor. A driving apparatus of an air conditioner having an air direction blade for adjusting and performing an indoor heating operation according to the operation of a compressor, wherein the latent heat removal of the indoor heat exchanger is stopped at the time of stopping the heating operation due to the stop of the compressor. An indoor fan motor driving means for driving the indoor fan, a wind direction adjusting means for driving a stepping motor to position the wind direction angle of the wind vane upward when the heating operation is stopped, and an indoor piping of the indoor heat exchanger Indoor piping temperature sensing means for sensing a temperature, and the indoor piping temperature at the time of stopping the heating operation in accordance with the operation stop of the compressor When the indoor piping temperature of the indoor heat exchanger sensed by the sensing means reaches or exceeds a preset latent heat removal temperature, the indoor fan motor driving means is driven to drive an indoor fan for removing latent heat, and the wind direction control means Characterized in that the control means for performing a control to drive the position of the wind vane upward by the drive control.

In addition, the heating operation method of the air conditioner according to the present invention, in the operation method of the air conditioner to heat the air circulated by the indoor fan through the indoor heat exchanger, and then perform the heating operation by adjusting the wind direction by the wind vane. And a temperature reaching judging step of judging whether the indoor temperature has reached the set temperature during the heating operation, and turning off the compressor if it is determined that the indoor temperature has reached the set temperature in the temperature reaching judging step, and after turning off the compressor. A temperature comparison determination step of determining whether the indoor heat exchanger temperature is equal to or higher than the latent heat removal temperature preset in the control means, and if the indoor heat exchanger temperature is determined to be higher than the latent heat removal temperature in the temperature comparison determination step, turn on the indoor fan. A latent heat removing step of removing latent heat of the indoor heat exchanger, and the seal according to an on operation of the indoor fan. When the latent heat removal operation of the heat exchanger is characterized by consisting of a cold air discharge prevention step of preventing the cold air discharge by fixing the upward angle of the wind vane.

1 is a perspective view showing an indoor unit of a general air conditioner,

2 is a side cross-sectional view of the indoor unit of FIG.

3 is a refrigerant cycle diagram of a general air conditioner,

4 is a control block diagram of a heating operation apparatus of an air conditioner according to an embodiment of the present invention;

5A and 5B are flowcharts showing a heating operation control operation procedure of the air conditioner according to the present invention.

* Explanation of symbols for the main parts of the drawings

1: indoor unit 5: discharge port

11: wind vane 15: indoor heat exchanger

17: indoor fan 30: compressor

104: control means 108: indoor piping temperature detection means

110: compressor driving means 112: wind direction control means

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

Since the air conditioner according to the present invention is the same as the conventional configuration shown in Figs. 1 and 2, the same name and the same reference numeral are specified to omit overlapping description.

As shown in FIG. 4, the power supply means 100 converts a commercial AC voltage supplied from an AC power supply terminal (not shown) into a predetermined DC voltage required for the operation of the air conditioner, and outputs the same. Has a plurality of function keys for inputting the operation mode (automatic, cooling, heating, dehumidification, blowing, etc.) of the air conditioner, the set air volume, the set wind direction, the set temperature (Ts), and the operation / stop of the air conditioner. The operating means 102 is a remote control signal for receiving an infrared signal transmitted from the remote control unit 9 according to the key input unit 103 provided on the control panel of the indoor unit 1 and the key operation of the remote control unit 9. The receiver 7 is comprised.

And, the control means 104 is applied to the DC voltage output from the power supply means 100 to initialize the air conditioner, as well as the air conditioning in accordance with the operation selection signal input by the operation operation means (102) Microcomputer that controls the overall operation of the machine.

Here, the control means 104 is the indoor heat exchange detected by the indoor pipe temperature sensing means 108 to be described later, when the compressor 30 is turned off when the room temperature (Tr) reaches the set temperature (Ts) during the heating operation When the indoor piping temperature of the machine 15 reaches a predetermined latent heat removal temperature, the latent heat removal operation of the indoor heat exchanger 15 is performed by controlling the indoor fan motor driving means to operate the indoor fan 17. On the other hand, by controlling the wind direction control means 112, the discharge direction of the wind vane 11 is advanced upward.

The indoor temperature detecting means 106 detects the temperature Tr of the indoor air sucked through the inlet 3, and the indoor pipe temperature detecting means 108 passes through the pipe of the indoor heat inductor 15. Detects and outputs the control means (104).

In addition, the compressor driving means 110 drives the compressor 30 for heating operation according to the difference between the temperature Ts set by the user and the room temperature Ts.

On the other hand, the wind direction control means 112 is output from the control means 104 in a state in which the indoor fan 17 is operated to remove the latent heat of the indoor heat exchanger when the compressor 30 is stopped due to the stop of the heating operation. By driving the stepping motor (not shown) by receiving the pulse signal, the wind vane 11 is moved upward so that the latent heat discharged through the discharge port 5 (see FIG. 2) is discharged upward.

The outdoor fan motor driving means 114 drives the outdoor fan 41 by controlling the rotation speed of the outdoor fan motor so as to blow the air heat-exchanged in the outdoor heat exchanger 40 to the outside.

In addition, the indoor fan motor driving means 116 drives the indoor fan 17 by controlling the rotation speed of the indoor fan motor to blow the air heat-exchanged by the indoor heat exchanger 15 into the room, and the four-way valve driving means 118. ) Controls the four-way valve 35 on / off to control the flow of the refrigerant in accordance with the cooling operation or the heating operation.

In addition, in the drawing, the display means 120 displays the operation selection mode (automatic, cooling, dehumidifying, blowing, heating, etc.) input by the driving operation means 102 under the control of the control means 104. Of course, the operating state of the air conditioner.

Hereinafter, the operation effect of the heating operation apparatus and the method of the air conditioner configured as described above will be described.

5A and 5B are flowcharts showing the operation sequence of the heating operation control of the air conditioner according to the present invention. In Figs. 5A and 5B, 5 denotes a step.

First, when power is applied to the air conditioner, the power supply means 100 converts a commercial AC voltage supplied from an AC power terminal (not shown) into a predetermined DC voltage required for driving the air conditioner, thereby driving each circuit and control means ( Output to 104).

Therefore, in step S1, the DC voltage output from the power supply means 100 is input from the control means 104 to initialize the air conditioner.

At this time, the user operates the key input unit 103 or the remote controller 9 and presses the operation / stop key, and then the operation mode (for example, cooling or heating), the set temperature (Ts), the set air volume, and the desired air conditioner. When the setting wind is input, the remote controller 9 encodes the remote control signal corresponding to the key input by a predetermined protocol, modulates the encoded signal and transmits the infrared signal.

When the infrared signal is transmitted from the remote control unit 9, the indoor unit 1 and the remote control signal receiving unit 7 receive it and convert it into an electric signal, and demodulate the converted electric signal to drive an operation selection signal and an operation start signal (hereinafter, , A driving signal) is input to the control means 104.

Accordingly, in step S2, the control means 104 determines whether the driving signal is input from the driving operation means 102, and maintains the air conditioner in the operation standby state when the driving signal is not input (NO). The operation of step S7 and below is repeated.

As a result of the discrimination in step S7, when an operation signal is input (YES), the process proceeds to step S3 and the control means 104 determines whether the operation condition input by the operation operation means 102 is a heating operation, If it is not the heating operation (NO), the process proceeds to step S31, returns to the step S3 while performing the operation of the air conditioner in accordance with the selected operation mode, and repeats the operation of step S3 or less.

As a result of the determination in step S3, in the case of heating operation (YES), in order to perform heating operation of the air conditioner, in step S4, the control means 104 controls the control signal for controlling the four-way valve 35 on all sides. Output to the valve drive means 118.

Therefore, in the four-way valve driving means 118, the refrigerant is turned on by the four-way valve 35 under the control of the control means 104, so that the refrigerant flows from the compressor 30 to the four-way valve 35 to the indoor heat exchanger 15 to the capillary tube. 50) → heating capillary (60) → outdoor heat exchanger (40) → four-way valve (35) → compressor (30) in order to circulate.

At this time, in step S5, it is determined whether the predetermined time (delay time for protecting the compressor, about 3 minutes) has elapsed, and if the predetermined time has not elapsed (NO), the step S5 or less until the predetermined time elapses. Repeat the operation.

As a result of the discrimination in step S5, when a predetermined time has elapsed (YES), the process proceeds to step S6, whereby the control means 104 sets the room temperature Tr detected by the room temperature sensing means 106 by the user. If the temperature Ts is not smaller than the set temperature Ts (NO), the process returns to the step S5 while waiting for the operation and repeats the steps S5 and below. Perform.

As a result of the discrimination in step S6, when the room temperature Tr is smaller than the set temperature Ts (YES), the process proceeds to step S7, whereby the control means 104 determines the room temperature Tr and the set temperature Ts. The driving frequency of the compressor 30 and the number of rotations of the outdoor fan motor are determined according to the difference, and the control signals for driving the compressor 30 and the outdoor fan 41 are transmitted to the compressor driving means 110 and the outdoor fan motor driving means ( 114).

Accordingly, the compressor driving means 110 turns on the compressor 30 in accordance with the operation frequency determined by the control means 104, and in the outdoor fan motor driving means 114 in accordance with the rotation speed determined by the control means 104, The fan 41 is turned on.

At this time, in step S8, if the temperature (Tip) of the indoor heat exchanger (15) heated at the time of circulation of the refrigerant by the drive of the compressor (30) is detected by the indoor pipe temperature detecting means (108), the control means (104) By receiving the analog data of the indoor piping temperature (Tip) sensed by the indoor piping temperature sensing means 110, converts it into digital and prevents cold air discharge at the initial cold air temperature (T1) when the indoor piping temperature (Tip) is preset. Preheating piping temperature, about 28 ° C) or higher.

As a result of the determination in step S5, if the indoor piping temperature Tip is not equal to or higher than the cold wind prevention temperature T1 (NO), it is determined that it is a temperature condition in which cold air can be discharged to the room, and the process returns to step S7. The operation following step S7 is repeatedly performed.

On the other hand, as a result of the determination in step S8, when the indoor piping temperature Tip is equal to or higher than the cold wind prevention temperature T1 (YES), it is determined that it is a temperature condition in which cold wind is not discharged to the room, and the control means ( 104 outputs a control signal for driving the indoor fan 17 to the indoor fan motor driving means 116.

Accordingly, the indoor fan motor driving means 116 turns on the indoor fan 17 by controlling the rotation speed of the indoor fan motor according to the air volume set by the user.

When the indoor fan 17 is turned on, in step S10, the high temperature and high pressure gas refrigerant discharged from the compressor 30 of the outdoor unit flows into the indoor heat exchanger 15 through the four-way valve 35, and the indoor heat exchanger 15 ) Heat exchanges the gas refrigerant of high temperature and high pressure with air blown by the indoor fan 17 and cools it with the refrigerant of normal temperature and high pressure, while the indoor air sucked through the inlet port 3 passes through the indoor heat exchanger 15. Heat exchange with warm air.

The air heat-exchanged by the warm air in the indoor heat exchanger (15) is heated by the duct member (19) while heating the room while the wind direction is adjusted up and down according to the wind direction angle of the wind vane (11) rotatably installed in the discharge port (5). Let's do it.

In addition, the low temperature and high pressure liquid refrigerant liquefied in the indoor heat exchanger (15) expands under reduced pressure to a low-temperature low-pressure free refrigerant through the capillary tube (50) and the heating capillary tube (60), and flows into the outdoor heat exchanger (40). In the heat exchanger (40), the low-temperature low-pressure free refrigerant is exchanged and cooled by air blown by the outdoor fan (41), and the low-temperature low-pressure gas refrigerant cooled in the outdoor heat exchanger (40) opens the four-way valve (35). Through the compressor 30 is introduced again through the adiabatic compression action of the compressor 30 is converted into a refrigerant gas of a high temperature and high pressure to repeat the refrigerant cycle in the dotted arrow direction of FIG.

When the heating operation is performed for a predetermined time as described above, the room temperature Tr gradually rises, so the flow proceeds to step S11, where the room temperature detecting means 106 detects the changing room temperature Tr at this time, and the control means 104. Determines whether the room temperature Tr is greater than the set temperature Ts, and if the room temperature Tr is not greater than the set temperature Ts (NO), returns to the step S10 to continue heating operation. While performing, the following operations are repeated.

As a result of the discrimination in step S11, if the room temperature Tr is greater than the set temperature Ts (YES), the flow advances to step S12, and the control means 104 turns off the compressor 30 and the outdoor fan 41. To stop the heating operation.

Subsequently, in step S13, the temperature (Tip) of the indoor heat exchanger (15) that changes after the compressor (30) is turned off is sensed by the indoor pipe temperature detecting means (108), and the control means (104) uses the indoor pipe temperature (Tip). It is determined whether or not the predetermined latent heat removal temperature (T2; the latent heat pipe temperature for removing the latent heat of the indoor heat exchanger at heating stop, about 20 ° C.).

As a result of the discrimination in step S13, when the indoor piping temperature Tip is equal to or greater than the latent heat removal temperature T2 (YES), it is determined that the latent heat of the indoor heat exchanger 15 is not removed and the process proceeds to step S14. The control means 104 outputs a pulse signal to the wind direction control means 12 for fixing the wind vane 11 upward to prevent cold air discharge during latent heat removal operation.

Therefore, the wind direction control means 12 receives the pulse signal output from the control means 104 and drives the stepping motor to fix the wind direction angle of the wind vane 11 upwards to the immediately downward direction of the indoor unit 1. Prevent cold air discharge.

Subsequently, in step S15, it is determined whether the indoor piping temperature Tip is less than the latent heat removal temperature T2. If the indoor piping temperature Tip is not less than the latent heat removal temperature T2 (NO), the indoor heat exchanger It is determined that the latent heat of (15) is a temperature condition that has not been removed, and the flow returns to step S14 to repeat the operations of step S14 and below.

As a result of the discrimination in step S15, when the indoor piping temperature Tip is less than the latent heat removal temperature T2 (YES), since the latent heat of the indoor heat exchanger 15 is removed, the process proceeds to step S16. 104 turns off the indoor fan 17 and returns the wind direction angle of the wind vane 11 to its original position, and then keeps the air conditioner in operation standby state until the room temperature Tr becomes smaller than the set temperature Ts. While returning to step S4, the operation of step S4 or less is repeated.

According to the heating operation apparatus and method of the air conditioner according to the present invention as described above, the indoor fan for removing the latent heat of the indoor heat exchanger after the compressor is turned off because the room temperature reaches the set temperature during the heating operation By allowing the wind vane to be fixed upward at the time of the on operation of the wind turbine, the user is provided with convenience for the user, while the cold wind for removing the latent heat generated from the indoor fan is not directly applied to the user located below the indoor unit. Will have the effect.

Claims (3)

An indoor heat exchanger for heat-exchanging air circulated by the indoor fan, and a wind vane for adjusting the air direction of the air heat-exchanged by the indoor heat exchanger according to the operation of the stepping motor, and performing indoor heating operation according to the operation of the compressor. An operating device of an air conditioner, comprising: an indoor fan motor driving means for driving the indoor fan to remove latent heat of the indoor heat exchanger when the heating operation is stopped due to the stop of the compressor, and when the heating operation is stopped Wind direction control means for driving a stepping motor to position the wind direction angle of the wind vane upward, the indoor pipe temperature sensing means for detecting the indoor pipe temperature of the indoor heat exchanger, and the heating operation according to the drive stop of the compressor The sleep setting of the indoor piping temperature of the indoor heat exchanger, which is detected by the indoor piping temperature sensing means at the time of stopping, is preset. When the temperature reaches above the removal temperature, the indoor fan motor driving means is driven to drive the indoor fan for latent heat removal, and the wind direction adjusting means is driven to perform the control to position the angle of the wind vane upward. Heating operation apparatus of the air conditioner, characterized in that consisting of the control means. A method of operating an air conditioner in which air circulated by an indoor fan is heat-exchanged through an indoor heat exchanger, and then performs a heating operation by adjusting the wind direction by a wind direction vane, wherein the temperature for determining whether the room temperature has reached a set temperature during the heating operation. A compressor off step of turning off the compressor when it is determined that the attainment temperature has reached the set temperature in the attainment determination step and the temperature reaching determination step, and the room heat exchanger temperature after the compressor is turned off is greater than or equal to the latent heat removal temperature preset by the control means A temperature comparison discrimination step of comparing the application and a latent heat removal step of removing the latent heat of the indoor heat exchanger by turning on the indoor fan when it is determined that the indoor heat exchanger temperature is equal to or greater than the latent heat removal temperature in the temperature comparison discrimination step; Angle of the wind vane during the latent heat removal operation of the indoor heat exchanger according to the on operation of an indoor fan Heating operation method of the air conditioner, characterized in that consisting of a cold air discharge prevention step of preventing the cold air discharge by fixing upward. The heating operation method of claim 2, wherein if the indoor heat exchanger temperature is determined to be less than the latent heat removal temperature, the wind vane is returned to its original position while the indoor fan is turned off.