KR100248761B1 - Heating controller and method of air conditioner - Google Patents

Abstract

The present invention relates to a heating control apparatus and a method of an air conditioner, comprising: a steam heater, an indoor temperature sensing means for sensing an indoor temperature, an indoor humidity sensing means for sensing an indoor humidity, and the indoor temperature sensing means. Control means for controlling the heating operation in accordance with the sensed room temperature, and controlling the humidification operation in accordance with the indoor humidity detected by the indoor humidity sensing means, and by controlling the drive of the steam heater in accordance with the control of the control means It consists of a steam valve for heating and a humidifying valve for humidifying by discharging the steam of the steam heater into the room under the control of the control means, while operating the steam heater during heating operation to perform heating and at the same time steam inside the steam heater Can be used in homes and businesses with boilers, and there is no risk of fire by heating with steam. Even when humidifying, it is convenient to use because it does not need additional water supplement.

Description

Heating controller and method of air conditioner

The present invention relates to an air conditioner equipped with a steam heater, and more particularly, to a heating control apparatus and method for heating an air conditioner to humidify a room using steam of a steam heater while heating by operating a steam heater during heating operation. It is about.

In the conventional air conditioner, as shown in FIGS. 1 and 2, the suction grill member 5 having a plurality of suction ports 3 through which indoor air is sucked is formed of an indoor main body (hereinafter, referred to as a main body). It is provided in the lower part of the front surface, and the discharge port 7 which discharges the air sucked through the said inlet port 3 and heat-exchanged by cold air or warm air to the room is formed in the upper front part of the main body 1.

In addition, the discharge port 7 is provided with a vertical wind vane 9 for adjusting the direction of the air discharged into the room through the discharge port 7 up and down and the left and right wind vane 11 for adjusting 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. At the lower side of the cover member 13, the operation mode of the air conditioner (automatic, cooling) , Dehumidification, blowing, heating, etc.) and a start / stop of operation, and an operation unit 15 for adjusting the air volume and the wind direction of the air discharged through the discharge port 7.

As shown in FIG. 2, inside the suction grill member 5, a filter member 17 for filtering foreign substances such as dust floating in the indoor air sucked through the suction port 3 is provided. The inside of the filter member 17 is provided with a straight indoor 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 indoor heat exchanger 19 sucks indoor air through the suction port 3 and simultaneously discharges air heat-exchanged in the indoor heat exchanger 19 to the room through the discharge port 7. A blower fan 23 (hereinafter referred to as an indoor fan) that rotates as the fan motor 21 is driven is installed, and the suction port is provided at the same time as the indoor fan 23 is covered with an outer side of the indoor fan 23. The duct member 25 which guides the flow of the air which is sucked in through (3) and discharged to the said discharge port 7 is provided.

When the air conditioner configured as described above is an inverter air conditioner that is also used for both heating and cooling, the four-way valve 31 is turned on during heating so that the refrigerant is shown by the dotted line (→) in FIG. (31) → indoor heat exchanger (19) → expansion valve (35) → heating expansion valve (37) → outdoor heat exchanger (39) → four-way valve (31) → compressor (33).

On the other hand, when cooling, the four-way valve 31 is turned off so that the refrigerant is shown by the solid line (→) in FIG. 3, and the compressor 33 → four-way valve 31 → outdoor heat exchanger 39 → one-way valve 38 is shown. ) → expansion valve (35) → indoor heat exchanger (19) → four-way valve (31) → compressor (33).

At this time, the four-way valve 31 adjusts the flow path so that the refrigerant circulates in the solid line (→) when off, and adjusts the flow path so that the refrigerant circulates in the dotted line (->) when on.

In the air conditioner for both cooling and heating configured as described above, when the user operates the remote controller or the control unit 15 to select a desired operation mode (for example, cooling) and turns on 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 set temperature Ts when the set temperature Ts is lower than the room temperature Tr by comparing the temperature Tr of the indoor air sucked through the suction port 3 with the set temperature Ts. ) And the operating frequency of the compressor 33 is determined according to the difference between the room temperature Tr and the compressor 33.

When the compressor 33 is driven, the refrigerant is compressed by the compressor 33 → the four-way valve 31 → the outdoor heat exchanger 39 → the one-way valve 38 → the expansion valve as shown by the solid line (→) in FIG. (35) → indoor heat exchanger (19) → four-way valve (31) → compressor (33), and the indoor heat exchanger (19) starts to cool.

Therefore, the indoor air sucked into the main body 1 through the suction port 3 passes through the indoor heat exchanger 19, and is heat-exchanged with cold air by the latent evaporation of the refrigerant flowing in the indoor heat exchanger 19, The cold air heat exchanged in 19 is guided to the upper part and discharged into the room through the discharge hole 7, and the cold air discharged through the discharge hole 7 is inclined to the wind direction angle of the upper and lower wind vanes 9 and the left and right wind vanes 11. As the wind direction is adjusted up and down or left and right according to the indoor cooling.

On the other hand, during heating, when the set temperature (Ts) is compared with the room temperature (Tr) and the set temperature (Ts) is higher than the room temperature (Tr), the compressor according to the difference between the set temperature (Ts) and the room temperature (Tr) The operating frequency of the 33 is determined to drive the compressor 33.

When the compressor 33 is driven, the refrigerant is compressed by the dotted line (->) in FIG. 3, the compressor 33 → the four-way valve 31 → the indoor heat exchanger 19 → the expansion valve 35 → The expansion valve for heating (37) → outdoor heat exchanger (19) → four-way valve (31) → compressor (33) is circulated in order to heat the indoor heat exchanger (19), which changes at this time. The driving of the indoor fan 23 is controlled according to the temperature of.

If the temperature of the indoor heat exchanger 19 is lower than a predetermined temperature (about 27 ° C.), the indoor fan 23 is stopped to prevent cold air from being discharged to the room at the beginning of heating. If the temperature is equal to or higher than a predetermined temperature (about 27 ° C.), the indoor fan 23 is driven.

When the indoor fan 23 is driven, the indoor air sucked into the main body 1 through the suction port 3 passes through the indoor heat exchanger 19 while the warm air is caused by the latent heat of evaporation of the refrigerant flowing in the indoor heat exchanger 19. Heat exchanged by the heat exchanger, and the warm air heat-exchanged in the indoor heat exchanger 19 is guided to the upper portion and discharged into the room through the discharge hole 7, and the warm air discharged through the discharge hole 7 is the up-down wind vane 9 and the left-right wind direction Air conditioning is performed up and down or left and right according to the wind direction angle of the wing 11 to perform the indoor heating.

At this time, when the temperature of the indoor heat exchanger 19 drops below a predetermined temperature (about, 24 ° C.) by the room temperature (Tr), the indoor fan 23 should be turned off. It won't work.

Therefore, when the compressor 33 is in operation, the coolant is continuously supplied to the indoor heat exchanger 19 so that the indoor fan 23 is maintained even if the temperature of the indoor heat exchanger 19 drops below a predetermined temperature (about 24 ° C.). It keeps running without turning off to perform heating operation.

By the way, in such a conventional air-conditioning and air conditioner, there is no problem during cooling, but during heating, the compressor 33 is still running even if the temperature of the indoor heat exchanger 19 drops below a predetermined temperature (about 24 ° C.). When the indoor fan 23 is continuously driven, it does not respond to changes in the temperature of the room and discharges cold wind, thereby lowering the heating efficiency. Humidity must be used, and water has to be replenished frequently.

Therefore, the present invention has been made in order to solve the above-mentioned conventional problems, while operating the steam heater during the heating operation to perform the heating and at the same time to discharge the water vapor in the steam heater into the room to humidify the home or business with a boiler The purpose of the present invention is to provide a heating control device and a method of using an air conditioner that can be used, there is no danger of fire due to heating using steam, and no additional water supplement is required even when humidifying.

In order to achieve the above object, a heating control apparatus of an air conditioner according to the present invention includes a steam heater, an indoor temperature sensing means for sensing an indoor temperature, an indoor humidity sensing means for sensing an indoor humidity, and the indoor temperature sensing means. Control means for controlling the heating operation in accordance with the sensed room temperature, and controlling the humidification operation in accordance with the indoor humidity detected by the indoor humidity sensing means, and by controlling the drive of the steam heater in accordance with the control of the control means A steam valve for heating and a humidifying valve for humidifying by discharging the steam of the steam heater into the room under the control of the control means.

In addition, the heating control method of the air conditioner according to the present invention includes an operation determination step of determining whether the operation condition input by the operation operation means is a heating operation, and if the heating operation is performed in the operation determination step, the time is counted and the delay time is increased. A time discriminating step for determining whether it has passed, a heating step for heating the steam heater by heating according to the difference between the room temperature and the set temperature when the delay time has elapsed in the time discriminating step, and steam of the steam heater according to the indoor humidity. It characterized by consisting of a humidification step to release the humidification.

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

2 is a longitudinal sectional view showing an indoor unit of a conventional air conditioner.

3 is a cooling / heating cycle diagram of a conventional air conditioner.

Figure 4 is a longitudinal sectional view showing the indoor unit of the air conditioner according to the present invention.

5 is a control block diagram of a heating control device of an air conditioner according to an embodiment of the present invention.

6 (a) and 6 (b) are flowcharts showing the operation sequence of the heating control of the air conditioner according to the present invention.

* Explanation of symbols for main parts of the drawings

3: inlet port 7: outlet port

23: indoor fan 27: steam heater

104: control means 106: room temperature detection means

108: indoor humidity detection means 110: hot air temperature detection means

122: compressor driving means 124: indoor fan motor driving means

126: steam valve driving means 127: steam valve

128: humidification valve driving means 129: humidification valve

130: display means

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

About the same part as a conventional structure, the description which overlaps by specifying the same name and the same code | symbol is abbreviate | omitted.

As shown in FIG. 4, the upper part of the indoor fan 23 is provided with a steam heater 27 for heating using steam heated water, the steam heater 27 is a boiler not shown It is connected to a steam generator.

As shown in FIG. 5, 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. ) Is the operating mode of the air conditioner (automatic, cooling, dehumidification, blowing, heating, etc.) and the amount of air discharged through the discharge port 7 (strong wind, weak wind, breeze, etc.), wind direction, set temperature (Ts), By inputting the operation / stop of the air conditioner, this operation operation means 102 transmits from the remote control unit in accordance with the key operation of the operation unit 15 provided on the control panel of the main body 1 and a remote controller (not shown). And a remote control signal receiver 103 for receiving the infrared signal.

And, the control means 104 is applied to the current 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) As a microcomputer for controlling the overall operation of the machine, the control means 104 controls the driving of the steam heater 27 in accordance with the room temperature during the heating operation, and controls the humidification operation in accordance with the indoor humidity.

The indoor temperature detecting means 106 is sucked through the inlet port 3 to control the indoor temperature to the temperature Ts set by the user by the driving operation means 102 to perform the heating operation of the air conditioner. Detects the temperature (Tr) of the indoor air, the indoor humidity detecting means 108 detects the humidity (Hr) of the indoor air sucked through the inlet (3), the warm air temperature detecting means 110 is the steam heater Detects the steam discharge temperature of (27) and outputs it to the control means (104).

In addition, the wind direction control unit 120 controls the drive of the wind direction motor 121 to vertically and horizontally adjust the direction of the discharged air so that the air discharged through the discharge port 7 is evenly spread throughout the room, and the compressor driving means ( 122 is output from the control means 104 in accordance with the difference between the temperature Ts set by the user by the driving operation means 102 and the room temperature Tr sensed by the room temperature sensing means 106. In response to the control signal, the compressor 33 is driven and controlled.

The indoor fan motor driving means 124 receives the control signal outputted from the control means 104 according to the air volume set by the user by the driving operation means 102 and the heat exchanged in the indoor heat exchanger 19 ( Drive the indoor fan 23 by controlling the rotation speed of the indoor fan motor 21 so as to blow cold air or warm air into the room, and the steam valve driving means 126 is operated by the driving operation means 102 by the user. The steam valve 127 is turned on / off by receiving a control signal output from the control means 104 according to the difference between the set temperature Ts and the room temperature Tr sensed by the room temperature sensing means 106. Drive control

Humidification valve driving means 128 is steam in the room according to the difference between the indoor humidity (Hr) detected by the indoor humidity detecting means 108 and the reference humidity (Hs: about, 60%) set in the control means 104. Receiving a control signal output from the control means 104 so as to emit the on / off driving control of the humidification valve 129, the display means 130 according to the control of the control means 104 the operation operation means ( The operation selection mode (automatic, cooling, dehumidification, blowing, heating, etc.) input by 102) and the temperature and time are displayed.

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

6 (a) and 6 (b) are flowcharts showing the operation sequence of the heating control of the air conditioner according to the present invention. In FIGS. 6 (a) and 6 (b), S is a step ( STEP) is displayed.

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 SI, the DC voltage output from the power supply means 100 is received by the control means 104 to initialize the air conditioner.

At this time, the user operates the operation operation means 102 to input a desired operation mode (for example, heating), a set temperature (Ts), and a set air volume of the air conditioner, and then presses the operation key. From the 102, an operation selection signal and an operation start signal (hereinafter referred to as operation signal) are 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 operating standby state when no driving signal is 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 control means 104 determines whether the operation condition input by the operation operation means 102 is a heating operation, in step S3. If it is not heating operation (NO), the control means 104 controls the steam valve driving means 126 to turn off the steam valve 127 and delays the driving of the steam heater 27. Initializing the time (10 second delay, 1 minute delay), the process returns to the step S3, and the operation of the step S3 or less is repeated.

As a result of the discrimination in step S3, in the case of heating operation (YES), in step S4, the control means 104 drives the steam heater 27 by a built-in timer to perform heating operation of the air conditioner. The counter is started counting, and in step S5, it is determined whether the counted drive delay time has passed a predetermined time (t1: delay time until the indoor fan is stabilized, about 10 seconds).

As a result of the determination in step S5, if the predetermined time t1 has not elapsed (NO), the operation of step S5 or less is repeatedly performed while counting the time continuously until the predetermined time t1 elapses, If the predetermined time t1 has elapsed (YES), the control means 104 outputs a control signal for driving the indoor fan 23 to the indoor fan motor driving means 126 in step S6.

Accordingly, the indoor fan motor driving means 126 drives the indoor fan 23 by controlling the rotation speed of the indoor fan motor 21 according to the set air volume.

When the indoor fan 23 is driven, the indoor air begins to be sucked into the main body 1 through the suction port 3, and at this time, the indoor temperature sensing temperature Tr of the indoor air sucked through the suction port 3 is sensed. Sense at the means 106.

Subsequently, in step S7, the counted driving delay time is a predetermined time (t2: delay time for protecting the drive relay by giving a certain period of hysteresis even if the temperature immediately drops when the steam valve is turned off by temperature control). When the predetermined time t2 has not elapsed (NO), the operation after step S7 is repeatedly performed while counting the time continuously until the predetermined time t2 elapses.

As a result of the discrimination in step S7, when the predetermined time t2 has elapsed (YES), the process proceeds to step S8 and the control means 104 determines the indoor temperature Tr detected by the room temperature sensing means 106. The analog data is input and converted to digital to determine whether the set temperature (Ts) is greater than the room temperature (Tr). If the set temperature (Ts) is greater than the room temperature (Tr) (YES), go to Step S9. The control means 104 outputs a control signal for driving the steam heater 27 to the steam valve driving means 126.

Therefore, the steam valve driving means 126 drives the steam heater 27 by supplying a power voltage applied to the steam heater 27 by turning on the steam valve 127 under the control of the control means 104.

When the steam heater 27 is driven, in step S10, steam generated by using the steam heated water is discharged into the room through the discharge port 7 according to the driving of the indoor fan 23 to heat the room.

As described above, when the heating operation is performed, in step S11, the humidity Hr of the indoor air sucked through the suction port 3 is detected by the indoor humidity detecting means 108 and output to the control means 104.

Accordingly, the control unit 104 receives analog data of the indoor humidity Hr sensed by the indoor humidity detecting unit 108 and converts the analog data into digital to convert the indoor humidity Hr to a predetermined reference humidity (Hs): 60%) or less, and if the indoor humidity (Hr) is less than the reference humidity (Hs) (YES), it is determined that the indoor humidity is low, and the control means 104 proceeds to step S12. The control signal for driving the output to the humidification valve drive means (128).

Accordingly, the humidification valve driving means 128 turns on the humidification valve 129 under the control of the control means.

When the humidification valve 129 is turned on, in step S13, water vapor flowing through the inside of the steam heater 27 is discharged, and the discharged water vapor is discharged into the room according to the rotation of the indoor fan 23 to increase the indoor humidity. The process returns to step S3 while repeating the operation of step S3 and below.

On the other hand, if it is determined in step S8 that the set temperature Ts is not greater than the room temperature Tr (when NO), the room does not need to be heated, and the control means 104 proceeds to step S81. 27) If it is determined to drive, and if the steam heater 27 is not driven (NO), the process returns to the step S3 and repeats the operation of the step S3 or less.

As a result of the determination in step S81, in the case of driving the steam heater 27 (YES), the control means 104 controls the steam valve driving means 126 and the humidification valve driving means 128 by proceeding to step S82. The steam valve 127 and the humidification valve 129 are turned off, the counter is returned to the step S3 while the one minute delay of the steam heater 27 is countered, and the operation below the step S3 is repeatedly performed.

If the indoor humidity Hr is not equal to or less than the reference humidity Hs (NO), the indoor humidity is determined to be an appropriate humidity, and the control means 104 proceeds to step S14. The valve driving means 128 is controlled to return to the step S3 while the humidification valve 129 is turned off to repeat the operation of the step S3 or less.

According to the heating control device and method of the air conditioner according to the present invention as described above, the boiler operates by heating the steam heater during heating operation and at the same time releasing water vapor inside the steam heater to humidify the boiler. It can be used in homes or businesses, there is no risk of fire by heating with steam, and there is no need for a separate water supplement even when humidifying, so it is convenient to use.

Claims (2)

A steam heater, a steam valve for driving the steam heater, a humidification valve for discharging steam of the steam heater to the room, an indoor temperature sensing means for sensing an indoor temperature, and an indoor humidity sensing means for sensing indoor humidity In one air conditioner, when the indoor temperature detected by the indoor temperature sensing means is compared with the set temperature, if the indoor temperature is lower than the set temperature, a control signal for driving the steam valve is output, and the indoor humidity sensing means is output. And a control means for outputting a control signal for driving the humidification valve when the indoor humidity is lower than the reference humidity by comparing the detected indoor humidity with the reference humidity. A signal input judging step of judging whether a heating operation signal has been input from the driving operation means; a time judging step of judging whether a delay time has elapsed by counting a time when a heating operation signal is input in the signal input judging step; Detects the indoor temperature when the delay time elapses, and if the indoor temperature is lower than the preset temperature set by the control means, the heater driving step of driving the steam heater by turning on the steam valve, and detecting the indoor humidity after the steam heater is driven. If the indoor humidity is lower than the reference humidity set in the control means heating control method of the air conditioner, characterized in that the humidifying step of releasing the steam of the steam heater by turning on the humidification valve.

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