KR20040101045A - Air conditioner - Google Patents

Abstract

PURPOSE: An air conditioner for appropriately inducing outside air by comparing an indoor temperature with an outdoor temperature is provided to reduce power consumption of an air conditioner and reduce the air conditioning load before the air conditioning process begins by inducing outside air after comparing the indoor and outside air temperature. CONSTITUTION: A first ventilation path(15) makes a suction port(2f) communicate with a discharge port(9). A heat exchanger(11) is installed in the first ventilation path. A blower fan(12) diffuses air of which the temperature is controlled by the heat exchanger. An opening is formed in the first ventilation path. A second ventilation path(17) is communicated to the outside through the opening. An indoor temperature sensor is installed to detect the indoor temperature. An outdoor temperature sensor is installed to detect the outdoor temperature. An air supply unit(18) is installed to induce outside air into a room. The air supply unit has an air supply damper(16) opening and shutting the opening, and an air supply fan(18A) sucking the outside air in. The air supply unit is set in a cooling mode when the outdoor temperature is higher than the indoor temperature. The air supply unit is operated when the outdoor temperature is lower than the indoor temperature.

Description

Air conditioner {AIR CONDITIONER}

The present invention relates to an air conditioner having a function of blowing outdoor air into a room.

Background Art In a conventional air conditioner, a wall-mounted air conditioner is known in which a hole is drilled in a wall of a room to blow outside air into the room through the wall hole.

In this type of air conditioner, for example, an intake port is provided on the front surface and an upper surface of the main body, and an air outlet is provided in the lower part of the front surface, and a heat exchanger and a blower fan are installed in the first ventilation path connecting the intake port and the air outlet. A second ventilation path comprising an opening communicating with the first ventilation path and an opening / closing plate for opening and closing the opening, having one end connected to the opening, the other end being led out to the outside, and having a ventilation opening; Is installing.

In the case of cooling, heating, or dehumidifying operation, when the outside temperature is closer to the set temperature than the room temperature, or when the outside temperature and the room temperature are opposite to the set temperature, the open / close board is opened and the outside air is opened. It blows in and is controlled so that it may become close to the said set temperature. Thereby, outdoor air is utilized to improve the indoor environment and to save energy (see Patent Document 1, for example).

[Patent Document 1]

Japanese Patent Laid-Open No. 2001-330296

However, if, for example, the air conditioner is stopped and the room is completely closed for a long time, for example, on a summer day, even if the room temperature rises above the ambient temperature, even if the air conditioner is operated by utilizing the outside air as in the air conditioner described above. The room temperature rarely goes down. Moreover, even if the outside temperature is relatively high even during the daytime in winter, if the room is left in a state for a long time by the member, the room may be kept low even if the outside temperature rises, and the room temperature may hardly rise even when the heating operation is performed. When the air conditioner is left in a state where the air conditioner is left in this way for a long time, the load at the start of the air conditioning operation increases, and it takes time for the room temperature to reach the set temperature, and the power consumption at the start of the operation increases. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and effectively utilizes outside air to improve the synergistic characteristics and to shorten the time until the room temperature reaches the set temperature to reduce power consumption and improve energy efficiency. The purpose is to provide a harmonic.

BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing which shows the wall-mounted air conditioner and remote control in this invention.

2 is a left side cross-sectional view of the indoor unit of FIG. 1;

Fig. 3 is a front view showing the indoor unit rear case part of Fig. 1;

4 is a schematic diagram showing a refrigerant circuit and a control system of the air conditioner according to the present invention;

Fig. 5 is an automatic mode selection table of the air conditioner in the present invention.

6 is a flowchart of air supply operation at the time of input timer operation.

Fig. 7 is a flowchart showing air supply operation during air conditioning operation.

Fig. 8 is a flowchart showing air supply operation when the air conditioning operation is stopped.

9 is a flowchart showing air supply operation at the time of sleep reservation operation.

<Explanation of symbols for the main parts of the drawings>

1: air conditioner

2: indoor unit

2C: rear case part

2f: inlet

5: remote control

9: outlet

12: blowing fan

15: first ventilation path

15A: communication port (opening)

16: air supply damper

17: second ventilation path

17A: Duct

17B: Intake vent

18: air supply unit

18A: Air supply fan

130: outdoor temperature sensor (room temperature sensor)

131: room temperature sensor (outdoor temperature sensor)

140: control unit

In order to achieve the above object, the invention described in claim 1 includes an intake port for sucking indoor air, a blowout port for taking air out into the room, a first ventilation path communicating with these intake ports and the blowout port, and installed in the first ventilation path. In an air conditioner having a heat exchanger and a blowing fan for taking out the air temperature controlled by the heat exchanger into the room, and a second ventilation path having an opening in the first ventilation path and communicating with the outside through the opening, It has a room temperature sensor which detects room temperature, the outside air temperature sensor which detects outside air temperature, and the air supply apparatus which introduces outside air into the room, This air supply apparatus has the air supply damper which opens and closes the said opening part, and the air supply fan which sucks outside air is provided. It is set in the heating mode and also when the outside air temperature is higher than room temperature and in the cooling mode, and also when the outside air temperature is lower than room temperature.

The invention according to claim 2 is characterized in that, in the air conditioner according to claim 1, the air supply device is operated by operation of a switch irrespective of the air conditioning operation and the air conditioning operation stop.

The invention according to claim 3 has an input timer function for starting the air conditioning operation at a set time in the air conditioner according to claim 1, wherein the air supply device has a predetermined time for starting the air conditioning operation during the input timer operation. It is characterized by being operated from before.

The invention according to claim 4 includes, in the air conditioner according to claim 1, the air conditioner having a sleep reservation operation function of raising a set temperature after a predetermined time has elapsed, and the air supply device increases the set temperature of the sleep reservation operation. After the operation is characterized in that.

The invention according to claim 5 includes an intake port for sucking indoor air, an outlet for taking air out into the room, a first ventilation path communicating with these suction ports and an outlet, a heat exchanger provided in the first ventilation path, and the heat exchanger. Blower fan that blows out the temperature-controlled air into the room, a communication port communicating with the first ventilation path, a damper for opening and closing the communication port, and a second ventilation having one end connected to the communication port and the other end facing the outside An air conditioner having a furnace and an air supply fan provided in the second ventilation path, the air conditioner comprising a room temperature sensor for detecting a room temperature, an outside air temperature sensor for detecting an outside temperature, and an air supply device for operating the air supply fan by opening the damper. The air supply unit is operated when the outside air temperature is higher than room temperature at the time of stopping the operation of the air conditioner set to the heating mode, and at the time of stopping the operation of the air conditioner set to the cooling mode. It characterized in that the temperature is lower than when operating at room temperature.

Invention of Claim 6 is invention of Claim 5 WHEREIN: The said air supply apparatus is operated and set by the operation switch, It is characterized by the above-mentioned.

Invention of Claim 7 is invention of Claim 5, Comprising: The said air conditioner is equipped with the input timer function which starts air-conditioning operation at a predetermined time, The said air supply apparatus of the air conditioning operation start at the time of input timer operation is carried out. It is characterized in that it is operated from a predetermined time ago.

According to any one of claims 5 to 7, the invention according to claim 8, wherein the air conditioner is provided with a sleep reservation operation function of raising a set temperature after a predetermined time, and the set temperature perpendicular to the sleep reservation operation. It is characterized by operating an air supply apparatus at the time of climb.

According to the present invention, it is possible to reduce the power consumption of the air conditioner by comparing the indoor temperature with the outdoor temperature and introducing the outside air into the room as appropriate. In particular, by performing air supply operation before starting the air conditioning operation to reduce the air conditioning load, the power consumption at the start of operation can be reduced, and the start characteristics can be improved.

In addition, when the operation start time is known in advance, such as when setting the input timer operation, by introducing the outside air by comparing the room temperature with the outside temperature before the start of the air conditioning operation, the power consumption at the start of the operation is reduced, and the start is performed. Can improve the characteristics.

In addition, when the air conditioning load is small like the air conditioning operation during sleep, but the operation time is long, the air consumption can be reduced by comparing the room temperature with the outside air temperature and introducing the outside air.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described according to attached drawing.

1 is an explanatory diagram showing a relationship between a wireless remote control apparatus used for an air conditioner and an air conditioner. In Fig. 1, the air conditioner 1 includes an indoor unit 2, an outdoor unit 3, and a wireless remote control unit 5 (hereinafter simply referred to as a remote control unit), and the indoor unit 2 and the outdoor unit 3 It is connected by the refrigerant pipe 4 arranged through the wall hole.

The remote controller 5 has various operation switches (operation stop switch, operation mode switching switch, set temperature switch, input tire switch, sleep reservation operation switch, sleep reservation operation switch, air supply operation switch, etc. for operating the air conditioner 10). ) Is arranged.

2 is a left side cross-sectional view of the indoor unit, and FIG. 3 is a front view of the rear case part. 2 and 3, the indoor unit 2 is provided on the front case part 2A on the front face side and the front part of the front case part 2A, and the suction panel 2B provided with the suction port 2f. And 2 C of rear case parts provided in the back side.

Reference numeral 11 denotes a heat exchanger that heats / cools (regulates) air in the room, and acts as a cooler by acting as an evaporator during cooling / dry operation by passing a refrigerant through the pipe. In heating operation, it functions as a condenser and functions as a heater.

Reference numeral 12 denotes a blower fan, which is sucked from the panel 2B that sucks air in the room by the operation of the blower fan 12, heated / cooled by the heat exchanger 4, and circulated back to the room.

6 is a drain pan for storing and discharging the drain water from the heat exchanger 11, 7 is an air filter for dusting relatively large dust in the indoor air sucked by the blowing fan 12, 8 is It is an air cleaning filter which dusts relatively fine dust in the indoor air which passed the air filter 7.

Reference numeral 9 denotes an outlet of hot air / cold wind for blowing out the air temperature controlled by the heat exchanger 11 into the room, and reference numeral 9A is attached to the outlet 9 to control the upper and lower wind directions of the hot air / cold wind taken out from the outlet 9. The flap and reference numeral 10 are a plurality of longitudinal blades which are attached to the air outlet 9 to control the left and right wind directions of the hot air and cold air taken out from the air outlet 9. A drive motor for adjusting the angle is attached to the flap 9A, and is controlled to be rotatable by the operation of the remote controller 5.

Reference numeral 15 denotes a communication between the inlet port 2f and the outlet port 9 so that the longitudinal section is smoothly connected from the inlet port 2f to the outlet port 9 in the substantially arc-shaped first ventilation path (scroll part) to induce hot / cold air. will be. Reference numeral 15A denotes a communication port which is installed in the middle of the first ventilation path 15 to fill the width of the air and guides outdoor air to the interior.

Reference numeral 16 denotes a first ventilation path at the time of opening by allowing the support 16 to rotate the shaft 16A provided at the upstream end of the communication port 15A at the air supply damper installed in the communication port 15A (hereinafter simply referred to as a damper) at a support point. (15) is opened to block, and when it is closed, it is accommodated smoothly along the wall surface of the 1st ventilation path 15. (refer FIG. 2, FIG. 3).

Reference numeral 17 is a second ventilation path provided on the rear surface of the communication port 15A, and guides the air blown in from the outside to the outlet 9 through the communication port 15A and the first ventilation path 15. The second ventilation path 17 communicates with the hose part 33 which guides the air blown in from the outside into the room through the inlet port 17B, and communicates with the hose part 33 to the first ventilation path 15. It consists of 17 A of duct parts which guide, and the air supply apparatus 18 which supplies external air to this duct part 17A.

The air supply device 18 is installed at the right end of the duct portion 17A and has a sirocco fan or turbo fan 18A and its casing 18B, and the intake port 17B guides the air blown in from the outside into the room. The hose part 33 is fixed to the hose band 33A.

The hose part 33 is formed in a bellows type with a soft resin material or the like, and is formed through a through hole provided in the outer wall surface of the operation chamber (not shown) together with the refrigerant pipe 4 (see FIG. 1) of the indoor unit 2. Led to the outdoors.

4 is a schematic diagram showing a refrigerant circuit and a control system of the air conditioner according to the present invention. As shown in FIG. 4, the air conditioner 1 has an indoor unit 2 and an outdoor unit 3, and the outdoor refrigerant pipe 114 of the outdoor unit 3 and the indoor refrigerant pipe 115 of the indoor unit 2 are shown in FIG. ) Is connected via connecting pipes 4a and 4b.

In the outdoor unit 3, a compressor 116 is disposed, an accumulator 117 is disposed on the suction side of the compressor 116, and a four-way valve 118 is disposed on the discharge side of the compressor 116. The outdoor heat exchanger 119 and the electric expansion valve 122 are arrange | positioned at the 118 side in order. The outdoor heat exchanger 119 is disposed adjacent to the outdoor fan 120 that blows the air from the outdoor heat exchanger 119 to the outside.

The outdoor heat exchanger 119 is attached with an outdoor temperature sensor 130 for detecting the outdoor temperature. The outdoor temperature sensor 130 is disposed, for example, on the upstream side of air passing through the outdoor heat exchanger 119.

An indoor heat exchanger 11 is arranged in the indoor unit 2, and a blowing fan 12 for blowing air from the indoor heat exchanger 11 into the room is disposed adjacent to the indoor heat exchanger 11. This blowing fan 12 is driven by a blowing fan motor 12A. This indoor fan is a cross flow fan, for example.

The indoor heat exchanger 11 is attached with a room temperature sensor 131 for detecting the room temperature. The room temperature sensor 131 is disposed, for example, on the upstream side of air passing through the room heat exchanger 11.

Moreover, the air conditioner 1 is equipped with the control apparatus 140 which controls the whole air conditioner 1. This control apparatus 140 is comprised with the outdoor control apparatus 141 provided in the outdoor unit 3, and the indoor control apparatus 142 provided in the indoor unit 2. As shown in FIG. The indoor control device 142 mainly performs the rotational speed of the blower fan 12, and the outdoor control device 141 controls the operating frequency of the compressor 116 according to the required air conditioning load, and controls the operation of the outdoor fan 120. While controlling the rotational speed in stages and controlling to switch the four-way valve 118 in accordance with the operation mode, the outdoor control device 141 has a predetermined deviation (for example, 1 ° C) between the room temperature and the set temperature. If smaller, the thermo-off control for stopping the operation of the compressor 116 is performed. In addition, the outdoor control device 141 transmits a signal for controlling the electric expansion valve 122. The indoor control device 142 controls the rotation speed of the blowing fan 12. That is, the outdoor control apparatus 141 controls the whole air conditioner 1 substantially.

The outdoor control device 141 includes a CPU 151, a ROM 152, and a RAM 153, and the CPU 151 has an air conditioner (according to the control program 152A in the ROM 152). 1) The whole control is performed. The ROM 152 previously stores control data including the control program 152A, and the RAM 153 temporarily stores various data.

The outdoor temperature and the indoor temperature detected by the outdoor temperature sensor 130 and the indoor temperature sensor 131 are temporarily stored in the RAM 153, and the automatic mode selection described later based on the stored temperature data is performed. The operation mode is selected from the table, or the air supply operation described later is started or finished by comparing the two modes.

By the remote control 5 (refer FIG. 1) on the indoor unit 2 side, it can be set to any operation mode of cooling operation, dry operation (weak cooling operation), or heating operation, and the four-way valve 118 is cooled When the driving mode is set to any one of the operation and the dry operation (weak cooling operation), the switching is performed as indicated by the solid arrows, and when the operation mode is set to the heating operation, the switching is performed as indicated by the dotted arrows. In addition, the four-way valve 118 is switched as shown by the solid arrow when it switches to the defrost operation which defrosts the outdoor heat exchanger 119 during a heating operation.

By the way, with the remote control 5 (refer FIG. 1), various operation switches (operation / stop switch, operation mode switching switch, setting temperature switch, input timer switch, sleep reservation operation switch) for controlling the air supply conditioner 1 Air supply operation switch), and the air conditioner 1 can be set by operating these operation switches. For example, the operation mode setting of any one of the cooling operation, the dry operation (weak operation), the heating operation, or the automatic operation mode which automatically sets the operation mode according to the room temperature and the outside temperature by operating the operation mode switching switch is performed. It is possible.

When the cooling or dry operation mode is set, the four-way valve 118 is switched as shown by the solid arrow, and the refrigerant flows like the solid arrow. The refrigerant is discharged from the compressor 116 and passes through the four-way valve 118 to the outdoor heat exchanger 119, condensed in the outdoor heat exchanger 119, and depressurized past the electric expansion valve 122 of the outdoor unit 3. After that, it flows into the indoor heat exchanger (11). In this indoor heat exchanger (11), the refrigerant is evaporated, and the room is cooled by heat exchange with indoor air. The refrigerant then returns to compressor 116 via four-way valve 118 and accumulator 117.

When it is set to the operation mode which performs dry operation, the four-way valve 118 is switched as shown by the solid line arrow, and a refrigerant | coolant flows like a solid arrow. Then, the cooling operation is performed with a lower cooling capacity than the refrigerant operation to dehumidify the room.

When set to the operation mode of the heating operation, the four-way valve 118 is switched to the heating side as indicated by the broken arrow, and the refrigerant flows like the broken arrow. The refrigerant is discharged from the compressor 116 by the operation of the compressor 116 and flows through the four-way valve 118 into the indoor heat exchanger 11 of the indoor unit 2. The refrigerant is condensed in the indoor heat exchanger (11), and the room is heated by heat exchange with indoor air. The refrigerant is then depressurized in the electric expansion valve 122 of the outdoor unit 3, evaporated in the outdoor heat exchanger 119, and then returned to the compressor 116 through the four-way valve 118 and the accumulator 117.

An outdoor temperature sensor 130 for detecting an outdoor temperature is attached to the outdoor heat exchanger 119 of the outdoor unit 3. The outdoor temperature sensor 130 is disposed, for example, on the upstream side of air passing through the outdoor heat exchanger 119.

In addition, an indoor temperature sensor 140 for detecting an indoor temperature is attached to the indoor heat exchanger 11 of the outdoor unit 2. The room temperature sensor 140 is disposed, for example, on the upstream side of air passing through the room heat exchanger 11.

The outdoor temperature and the indoor temperature detected by the outdoor temperature sensor 130 and the indoor temperature sensor 140 are temporarily stored in the RAM 153, and are described later based on the stored temperature data. The operation mode is selected from the above, or the air supply operation described later is started by comparing the two, and the operation is terminated.

5 is an automatic mode selection table showing an embodiment of the air conditioner according to the present invention. As shown in FIG. 5, the automatic mode selection table is a data table in which a plurality of temperature ranges are set using a plurality of indoor temperature set values TR1, TR2, and TR3 and a plurality of outdoor temperature set values TO1, TO2, and TO3. It is.

For example, the heating mode is selected when the outside temperature is less than 18 ° C., the outside temperature is less than 18 ° C. to 20 ° C., the room temperature is less than 22 ° C., and the outside temperature is 22 ° C. or more, and the room temperature is less than 15 ° C. In addition, the heating mode is selected when the ambient temperature is lower than 18 to 20 ° C, the ambient temperature is lower than 20 to 22 ° C, the room temperature is lower than 22 to 27 ° C, and the outside temperature is lower than the room temperature of 15 to 27 ° C. do. In addition, the cooling mode is selected when the ambient temperature is 20 ° C or higher and the room temperature is 27 ° C or higher.

Next, the air supply operation performed at the time of the input timer operation, the air conditioning operation, the air conditioning stop, and the sleep reservation operation will be described.

6 is a flowchart of the air supply operation at the time of input timer operation. During the input timer operation, the air supply operation is automatically performed by turning on the input tire switch.

In FIG. 6, the indoor control apparatus determines whether the air conditioner 1 is waiting for input timer operation (step S1). Next, if it is determined that the indoor control device is waiting for the input timer operation, the indoor control device determines whether it is within 2 hours until the input timer operation starts (step S2). Next, when the indoor control device determines that it is within 2 hours until the start of the input timer operation, it is determined whether the selected operation mode is the cooling mode or the dry mode according to the automatic mode selection table (see Fig. 5) (step S3). ).

If it is determined in step S2 that the indoor control device 142 is not within 2 hours until the start of the input timer operation, the control returns to the start, and the determination of step S1 is repeated again.

Next, when it is determined that the operation mode selected in step S3 is the cooling mode or the dry mode, the outdoor temperature is compared with the outdoor temperature detected by the indoor temperature sensor 131 and the outdoor temperature sensor 130. It is judged whether it is lower than room temperature (step S4).

If it is determined that the outdoor temperature is lower than the room temperature, the damper 16 is opened, and the air supply fan 18A is rotated to start the air supply operation in which outdoor air is blown into the room (step S5).

In step S4, when it determines with the outdoor temperature being higher than room temperature, it returns to a start and repeats determination of step S1 again.

Next, the indoor temperature and the outdoor temperature are compared to determine whether the outdoor temperature is equal to or greater than the indoor temperature (step S6).

When it determines that outdoor temperature is more than room temperature, damper 16 is closed, air supply fan 18A is stopped, and air supply operation is complete | finished (step S7).

In step S6, when it determines with the outdoor temperature being lower than room temperature, it returns to step S5 and air supply operation | movement continues until outdoor temperature becomes room temperature or more.

On the other hand, if it is determined that the operation mode selected in step S3 is the heating mode, the indoor temperature detected by the indoor temperature sensor 131 and the outdoor temperature sensor 130 is compared with the outdoor temperature to determine whether the outdoor temperature is higher than the indoor temperature. It is judged whether or not (step S8).

If it is determined that the outdoor temperature is higher than the room temperature, the damper 16 is opened, and the air supply fan 18A is rotated to start the air supply operation in which outdoor air is blown into the room (step S9).

In step S8, when it determines with the outdoor temperature being below room temperature, it returns to a start and repeats determination of step S1 again.

Next, the indoor temperature and the outdoor temperature are compared to determine whether the outdoor temperature is equal to or less than the indoor temperature (step S10). When the outdoor temperature is determined to be equal to or less than the indoor temperature, the damper 16 is closed and the air supply fan 18A is closed. It stops and air supply operation is complete | finished (step S11).

In step S10, when it determines with the outdoor temperature being higher than room temperature, it returns to step S9 and air supply operation | movement is continued until outdoor temperature becomes below room temperature.

Fig. 7 is a flowchart showing air supply operation during air conditioning operation (cooling, drying, heating). In the air supply operation during the air conditioning operation, the air supply operation is performed by turning on the air supply operation switch installed in the remote controller.

In Fig. 7, when the air supply operation switch is turned on during the air conditioning operation, it is determined whether the operation is a cooling operation or a dry operation (step S13). If it is determined that the cooling operation or the dry operation, the indoor temperature detected by the indoor temperature sensor 131 and the outdoor temperature sensor 130 and the outdoor temperature are compared to determine whether the outdoor temperature is lower than the indoor temperature (step S14). ).

If it is determined that the outdoor temperature is lower than the room temperature, the damper 16 is opened, and the air supply fan 18A is rotated to start the air supply operation in which outdoor air is blown into the room (step S15).

In step S14, when it determines with the outdoor temperature being higher than room temperature, it returns to a start and repeats determination of step S13 again.

Next, the indoor temperature and the outdoor temperature are compared to determine whether the outdoor temperature is equal to or greater than the indoor temperature (step S16).

If it is determined that the outdoor temperature is equal to or higher than the room temperature, the damper 16 is closed, the air supply fan 18A is stopped, and the air supply operation is terminated (step S17).

In step S16, when it determines with the outdoor temperature being lower than room temperature, it returns to step S15 and air supply operation | movement is continued until outdoor temperature becomes more than room temperature.

On the other hand, if it is determined that the operation mode selected in step S13 is the heating mode, the indoor temperature detected by the indoor temperature sensor 131 and the outdoor temperature sensor 130 is compared with the outdoor temperature to determine whether the outdoor temperature is higher than the indoor temperature. It is judged whether or not (step S18).

If it is determined that the outdoor temperature is higher than the room temperature, the damper 16 is opened, and the air supply fan 18A is rotated to start the air supply operation in which outdoor air is blown into the room (step S19).

In step S18, when it determines with the outdoor temperature being below room temperature, it returns to a start and repeats determination of step S13 again.

Next, the indoor temperature and the outdoor temperature are compared to determine whether the outdoor temperature is equal to or less than the indoor temperature (step S20). When the outdoor temperature is determined to be equal to or less than the indoor temperature, the damper 16 is closed to close the air supply fan 18A. It stops and air supply operation is complete | finished (step S21).

8 is a flowchart showing air supply operation when the air conditioner is stopped. When the air operation is stopped, the air supply operation is performed by turning on the air supply operation switch installed in the remote controller.

In Fig. 8, when the air supply operation switch is turned on at the time of stop, it is determined whether the operation mode selected according to the automatic mode selection table (see Fig. 5) is the cooling mode or the dry mode (step S23).

When it is determined that the operation mode selected in step S23 is the cooling mode or the dry mode, the indoor temperature is detected by the indoor temperature sensor 131 and the outdoor temperature sensor 130 and the outdoor temperature, and the outdoor temperature is higher than the indoor temperature. It is judged whether or not it is low (step S24).

If it is determined that the outdoor temperature is lower than the room temperature, the damper 16 is opened, and the air supply fan 18A is rotated to start the air supply operation in which outdoor air is blown into the room (step S25).

In step S24, when it determines with the outdoor temperature being higher than room temperature, it returns to a start and repeats determination of step S23 again.

Next, the indoor temperature and the outdoor temperature are compared to determine whether the outdoor temperature is equal to or greater than the indoor temperature (step S26).

When it determines that outdoor temperature is more than room temperature, damper 16 is closed, air supply fan 18A is stopped, and air supply operation is complete | finished (step S27).

If it is determined in step S26 that the outdoor temperature is lower than the room temperature, the flow returns to step S25 and the air supply operation is continued until the outdoor temperature becomes equal to or higher than the room temperature.

On the other hand, if it is determined that the operation mode selected in step S23 is the heating mode, the indoor temperature detected by the indoor temperature sensor 131 and the outdoor temperature sensor 130 is compared with the outdoor temperature, and the outdoor temperature is higher than the indoor temperature. It is judged whether or not (step S28).

If it is determined that the outdoor temperature is higher than the room temperature, the damper 16 is opened, and the air supply fan 18A is rotated to start the air supply operation in which outdoor air is blown into the room (step S29).

In step S28, when it determines with the outdoor temperature being below room temperature, it returns to a start and repeats determination of step S23 again.

Next, the indoor temperature and the outdoor temperature are compared to determine whether the outdoor temperature is equal to or less than the indoor temperature (step S30).

If it is determined that the outdoor temperature is equal to or less than the room temperature, the damper 16 is closed, the air supply fan 18A is stopped, and the air supply operation is completed (step S31).

In this way, by comparing the indoor temperature with the outdoor temperature and blowing outdoor air into the room as appropriate, the power consumption of the air conditioner 1 can be reduced.

In addition, when the operation start time is known in advance, such as when setting the input timer operation, and when the air conditioning load before operation starts is large, the air conditioner 1 is compared with the indoor temperature and the outdoor temperature, and the outdoor air is appropriately blown into the room. ) Can be started quickly, and power consumption at the start can be reduced.

Next, the air supply operation during the sleep reservation operation will be described with reference to the flowchart in FIG. During this sleep reservation operation, the air supply operation is automatically performed by turning on the sleep reservation operation switch provided in the remote controller.

First, the indoor control apparatus 142 determines whether the air conditioner 1 is in cooling or dry sleep reservation operation (step S41). Next, when the indoor control device 142 determines that the cooling or dry bedtime reservation operation is in progress, the indoor control device determines whether 1 hour has passed since the start of the bedtime reservation operation (step S42).

On the other hand, if it is determined in step S41 that the cooling or dry sleep reservation operation is not in progress, the determination of step S41 is repeated.

Next, if it is determined in step S42 that 1 hour has elapsed since the start of the sleep reservation operation, the set temperature is set back to 1 deg. C so that the user does not burn out during sleep (step S43).

Next, the indoor temperature detected by the indoor temperature sensor and the outdoor temperature sensor and the outdoor temperature are compared to determine whether the outdoor temperature is lower than the indoor temperature (step S44).

If it is determined that the outdoor temperature is lower than the room temperature, the damper 16 is opened, and the air supply fan 18A is rotated to start the air supply operation in which outdoor air is blown into the room (step S45).

In step S44, when it determines with the outdoor temperature being higher than room temperature, it returns to step S41 and repeats determination of step S41 again.

Next, the indoor temperature and the outdoor temperature are compared to determine whether the outdoor temperature is equal to or greater than the indoor temperature (step S46).

If it is determined that the outdoor temperature is equal to or higher than the room temperature, the damper 16 is closed, and the air supply fan 18A is stopped to terminate the air supply operation (step S47).

In step S46, when it determines with the outdoor temperature being lower than room temperature, it returns to step S45 and air supply operation | movement continues until outdoor temperature becomes more than room temperature.

On the other hand, if it is determined in step S42 that 1 hour has not elapsed or 1 hour has passed since the start of the sleep reservation operation, the indoor temperature detected by the indoor temperature sensor 131 and the outdoor temperature sensor 130 is compared with the outdoor temperature. It is determined whether the outdoor temperature is lower than the room temperature (step S48).

If it is determined that the outdoor temperature is lower than the room temperature, the damper 16 is opened, and the air supply fan 18A is rotated to start the air supply operation in which outdoor air is blown into the room (step S49).

In step S48, when it determines with the outdoor temperature being higher than room temperature, it returns to step S41 and repeats determination of step S41 again.

Next, the indoor temperature and the outdoor temperature are compared to determine whether the outdoor temperature is equal to or greater than the indoor temperature (step S50).

If it is determined that the outdoor temperature is equal to or higher than the room temperature, the damper 16 is closed, and the air supply fan 18A is stopped to terminate the air supply operation (step S51).

In step S50, when it determines with the outdoor temperature being lower than room temperature, it returns to step S44 and air supply operation | movement is continued until outdoor temperature becomes room temperature or more.

As described above, when the air conditioning load at the time of user's sleep is small but the operation time is long, the air conditioner 1 can be reduced by comparing the room temperature with the outside air temperature and introducing the outside air appropriately. Can be.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this.

For example, in step S2 of the flowchart of FIG. 6, although the indoor temperature and the outdoor temperature are detected two hours before the start of the input timer operation, the air supply operation is appropriately started, but the air conditioner 1 is provided. Since it is easy to predict that the air conditioning load varies depending on the environment, the user may be able to set and change the start time of the air supply operation as necessary.

For example, in step S43 of the flowchart of Fig. 9, the set temperature of the set temperature is set to 1 deg. C, but the setting can be freely changed according to the user's preference.

According to the present invention, it is possible to reduce the power consumption of the air conditioner by comparing the indoor temperature with the outdoor temperature and introducing the outside air into the room as appropriate. In particular, by performing air supply operation before starting the air conditioning operation to reduce the air conditioning load, the power consumption at the start of operation can be reduced, and the start characteristics can be improved.

In addition, when the operation start time is known in advance, such as when setting the input timer operation, by introducing the outside air by comparing the room temperature with the outside temperature before the start of the air conditioning operation, the power consumption at the start of the operation is reduced, and the start is performed. Can improve the characteristics.

In addition, when the air conditioning load is small like the air conditioning operation during sleep, but the operation time is long, the air consumption can be reduced by comparing the room temperature with the outside air temperature and introducing the outside air.

Claims (8)

A suction inlet for sucking indoor air, a blower outlet for taking air out into the room, a first ventilation path communicating with these suction ports and an outlet, a heat exchanger installed in the first ventilation path, and air regulated by the heat exchanger. In the air conditioner provided with the blowing fan which blows in into a room, and the 2nd ventilation path which has an opening part in the said 1st ventilation path, and communicates outdoor through this opening part, It has a room temperature sensor which detects room temperature, the outside air temperature sensor which detects outside air temperature, and the air supply apparatus which introduces outside air into the room, This air supply apparatus has the air supply damper which opens and closes the said opening part, and the air supply fan which sucks outside air is provided. The air conditioner is set to the heating mode, and is also operated when the outside air temperature is higher than the room temperature and the cooling mode, and when the outside air temperature is lower than the room temperature. The air conditioner according to claim 1, wherein the air supply device is operated by operation of a switch regardless of the air conditioning operation and the air conditioning stop. 2. The air conditioner according to claim 1, wherein the air conditioner has an input timer function for starting air conditioning operation at a set time, and the air supply device is operated from a predetermined time before the start of air conditioning operation during input timer operation. Harmonizer. The air conditioner according to claim 1, wherein the air conditioner has a sleep reservation operation function for raising a set temperature after a predetermined time elapses, and the air supply device is operated after raising the set temperature of the sleep reservation operation. Harmonizer. A suction inlet for sucking indoor air, a blower outlet for taking air out into the room, a first ventilation path communicating with these suction ports and an outlet, a heat exchanger installed in the first ventilation path, and air regulated by the heat exchanger. A blower fan blown into the room, a communication port communicating with the first ventilation path, a damper for opening and closing the communication port, a second ventilation path having one end connected to the communication port and the other end facing the outside, and this second In the air conditioner provided with the air supply fan installed in the ventilation path, A room temperature sensor for detecting room temperature, an outside air temperature sensor for detecting outside air temperature, and an air supply device for operating the air supply fan by opening the damper, and the air supply device has an outside air temperature at the time of stopping operation of the air conditioner set to the heating mode. An air conditioner which is operated when the air conditioner is higher than room temperature and is operated when the outside air temperature is lower than the room temperature when the air conditioner set to the cooling mode is stopped. The air conditioner according to claim 5, wherein the air supply device is set by operation by an operation switch. 6. The air conditioner according to claim 5, wherein the air conditioner is provided with an input timer function for starting air conditioning operation at a predetermined time, and the air supply device is operated from a predetermined time before the start of air conditioning operation at the time of input timer operation. Air conditioner. The air conditioner according to any one of claims 5 to 7, wherein the air conditioner has a bedtime reservation operation function for raising the set temperature after a predetermined time, and the air supply device is operated at the time of vertically rising the set temperature of the bedtime reservation operation. Air conditioner, characterized in that.