JP2005009849A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of reducing the power consumption by effectively utilizing the outside air to enhance the start-up characteristic. <P>SOLUTION: This air conditioner 1 comprises a suction port 2f, an outlet port 9, a first air passage 15 allowing the suction port 2f to communicate with the outlet port 9, a heat exchanger 11 and a blowing fan 12 for blowing the air the temperature of which is controlled by the heat exchanger 11, which are provided in the first air passage 15, and a second air passage 17 having an opening part to the first air passage 15 and communicating with the outdoor side through the opening part. This air conditioner further comprises a room temperature sensor for detecting the room temperature, an outside air temperature sensor for detecting the outside air temperature, and an air feeding device 18 for introducing the outside air into a room. The air supplying device 18 comprises a damper 16 for opening and closing the opening part, and an air supplying fan 18A for sucking the outside air, and it is driven when the outside air temperature is higher than the room temperature in a heating mode, and when the outside air temperature is lower than the room temperature in a cooling mode. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner having a function of taking outside air into a room.

  In a conventional air conditioner, a wall-mounted air conditioner in which a hole is formed in a wall of a room and outside air is taken into the room through the wall hole is known.

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

During cooling, heating, or dehumidifying operation, if the outside air temperature is closer to the set temperature than the room temperature, or if the outside air temperature and the room temperature are opposite to the set temperature, the open / close plate is opened to take in the outside air. Thus, the temperature is controlled to approach the set temperature. Thus, the outside air is utilized to improve the indoor environment and save energy (for example, see Patent Document 1).
JP 2001-330296 A

  However, for example, if the air conditioner is stopped during a midsummer day and the room is kept closed for a long time, the room temperature rises above the outside temperature, and the room temperature does not easily decrease even if the cooling operation is performed. Sometimes. Also, if the room is left unattended for a long time even during the winter days when the outside air temperature is relatively high, the room is kept in a low state, and even if it is heated, the room temperature is quite low. May not rise. If the room is left unattended for a long time with the air conditioner stopped, the load at the start of air conditioning operation increases, and it takes time until the room temperature reaches the set temperature. There was a problem of increased power consumption.

  The present invention has been made in view of the above-described problems. Air that effectively uses outside air to improve start-up characteristics (shorten the time until the room temperature reaches a set temperature) and reduce power consumption. The purpose is to provide a harmony machine.

    In order to achieve the above object, the invention described in claim 1 includes a suction port for sucking room air, a blow-out port for blowing air into the room, and a first ventilation path communicating the suction port and the blow-out port, A heat exchanger provided in the first ventilation path, a blower fan that blows out air adjusted by the heat exchanger into the room, and an opening in the first ventilation path, and communicates to the outside through the opening. An air conditioner including a second ventilation path that includes a room temperature sensor that detects a room temperature, an outside air temperature sensor that detects an outside air temperature, and an air supply device that introduces the outside air into the room. An air supply damper that opens and closes the opening, and an air supply fan that sucks outside air, is set to a heating mode, and is set to a cooling mode when the outside air temperature is higher than room temperature, and the outside air temperature. Is operated when the temperature is lower than room temperature.

  According to a second aspect of the present invention, in the air conditioner according to the first aspect, the air supply device is operated by operating a switch regardless of whether the air conditioning operation is performed or when the air conditioning operation is stopped.

  According to a third aspect of the present invention, in the air conditioner according to the first aspect, the air conditioner has an on-timer function for starting an air-conditioning operation at a set time, and the air supply device operates on an on-timer. It is operated from a predetermined time before the start of air conditioning operation.

  According to a fourth aspect of the present invention, in the air conditioner according to the first aspect, the air conditioner is provided with a sleep operation function for increasing a set temperature after a predetermined time has elapsed, and the air supply device is set for a sleep operation. It is characterized by being operated after raising the temperature.

  According to the present invention, it is possible to reduce the power consumption of the air conditioner by comparing the indoor temperature and the outdoor temperature and appropriately introducing the outside air into the room. In particular, by reducing the air conditioning load by performing the air supply operation before starting the air conditioning operation, it is possible to reduce the power consumption at the start of the operation and improve the startup characteristics.

  Also, when the operation start time is known in advance, such as when the on-timer operation is set, the power consumption at the start of operation is reduced by comparing the indoor temperature and the outside air temperature before starting the air conditioning operation and introducing the outside air. At the same time, the rising characteristics can be improved.

  Furthermore, when the air conditioning load is small but the operation time is long as in the air conditioning operation while sleeping, the power consumption of the air conditioner can be reduced by introducing the outside air by comparing the room temperature and the outside air temperature. it can.

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

  FIG. 1 is an explanatory diagram showing a relationship between a wireless remote control device used in an air conditioner and an air conditioner. In FIG. 1, an air conditioner 1 includes an indoor unit 2, an outdoor unit 3, and a wireless remote control device 5 (hereinafter simply referred to as a remote control), and the indoor unit 2 and the outdoor unit 3 are arranged through a wall hole. 4 is connected.

  2 is a left 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 includes a front case portion 2A on the front side, a suction panel 2B provided with a suction port 2f provided on the front portion of the front case portion 2A, and a rear side provided on the rear side. It is comprised with the case part 2C.

  Reference numeral 11 denotes a heat exchanger that heats / cools (controls the temperature of) indoor air. When the refrigerant passes through the piping, it functions as an evaporator during cooling / drying operation and functions as a cooler. Further, during heating operation, it acts as a condenser and functions as a heater.

  Reference numeral 12 denotes a blower fan that sucks indoor air from the suction panel 2B by the operation of the blower fan 12, heats / cools it with the heat exchanger 11, and circulates it again into the room.

  6 is a drain pan for storing and discharging drain water from the heat exchanger 11, 7 is an air filter for removing relatively large dust in the indoor air sucked by the blower fan 12, and 8 is the air filter. This is an air purifying filter that removes relatively fine dust in room air that has passed through the filter 7.

  9 is a hot air / cold air outlet that blows out the air conditioned by the heat exchanger 11 into the room, and 9A is a hot air / cold air that is attached to the air outlet 9 and blows out from the air outlet 9. The flaps 10 to be controlled are a plurality of vertical blades that are attached to the air outlet 9 and control the left and right air directions of the warm air / cold air that is blown out from the air outlet 9. A driving motor that adjusts the angle of the flap 9A is attached to the flap 9A, and the flap 9A is controlled to rotate freely by operating the remote controller 5.

  Reference numeral 15 denotes a first air passage that communicates the suction port 2f and the air outlet 9 and is smoothly connected from the air inlet 2f to the air outlet 9 through a first air passage having a substantially arcuate vertical cross section to guide hot / cold air. 15A is a communication port that is provided in the middle of the first ventilation path 15 in its full width and guides outdoor air into the room.

Reference numeral 16 denotes an air supply damper (hereinafter simply referred to as a damper) provided in the communication port 15A, which is rotatable about a shaft 16A provided at the upstream end of the communication port 15A, and is opened when opened. It opens so as to block the passage 15 and is smoothly stored along the wall surface of the first ventilation passage 15 when closed. (See Figs. 2 and 3)
17 is the 2nd ventilation path provided in the back side of the communication port 15A, and guides the air taken in from the outdoors to the blower outlet 9 through the communication port 15A and the first ventilation channel 15. The second ventilation path 17 includes a hose part 33 that guides air taken from outside to the room through the air inlet 17B, a duct part 17A that communicates with the hose part 33 and guides outside air to the first ventilation path 15; It is comprised with the air supply apparatus 18 which supplies external air to this duct part 17A.

  The air supply device 18 is provided at the right end of the duct portion 17A and includes a sirocco fan or a turbo fan 18A and a casing 18B. The hose that guides air taken from outside to the room is provided in the intake port 17B. The portion 33 is fixed by a hose band 33A.

  The hose portion 33 is configured in a bellows shape with a soft resin material or the like, and goes outside through a through-hole provided in an outer wall surface of the conditioned room together with the refrigerant pipe 4 (see FIG. 1) of the indoor unit 2. It is guided.

  FIG. 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 an outdoor refrigerant pipe 114 of the outdoor unit 3 and an indoor refrigerant pipe 115 of the indoor unit 2 are connected to a connecting pipe 4a, It is connected via 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. An outdoor heat exchanger 119 and an electric expansion valve 122 are sequentially arranged on the side. An outdoor fan 120 that blows air from the outdoor heat exchanger 119 to the outdoor side is disposed adjacent to the outdoor heat exchanger 119.

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

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

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

  The air conditioner 1 is provided with a control device 140 that controls the entire air conditioner 1. The control device 140 includes an outdoor control device 141 installed in the outdoor unit 3 and an indoor control device 142 installed in the indoor unit 2. The indoor control device 142 mainly controls 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 to control the rotational speed of the outdoor fan 120. In stepwise control, control is performed to switch the four-way valve 118 according to the operation mode, and if the difference between the room temperature and the set temperature is smaller than a predetermined deviation (for example, 1 ° C.), the operation of the compressor 116 is stopped. Perform thermo-off control. Further, the outdoor control device 141 sends a signal for controlling the electric expansion valve 122.

  The outdoor control device 141 includes a CPU 151, a ROM 152, and a RAM 153. The CPU 151 controls the entire air conditioner 1 according to a control program 152A in the ROM 152. The ROM 152 stores control data including the control program 152A in advance, 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 an operation mode is selected from an automatic mode selection table described later based on the stored temperature data. Or the air supply operation described later is started or ended by comparing the two.

  By the way, the remote controller 5 (see FIG. 1) includes various operation switches for controlling the air conditioner 1 (run / stop switch, run mode switch, set temperature switch, on timer switch, sleep run switch, air supply run). The air conditioner 1 can be set by operating these operation switches. For example, by operating the operation mode selector switch, one of the cooling mode, the dry mode (weak cooling mode), the heating mode, or the automatic mode that automatically sets the mode according to the room temperature and the outside temperature. Can be set.

  When the cooling or dry operation mode is set, the four-way valve 118 is switched as indicated by a solid arrow, and the refrigerant flows as indicated by a solid arrow. The refrigerant is discharged from the compressor 116, reaches the outdoor heat exchanger 119 through the four-way valve 118, is condensed in the outdoor heat exchanger 119, is depressurized through the electric expansion valve 122 of the outdoor unit 3, and then the indoor heat It flows into the exchanger 11. The refrigerant is evaporated in the indoor heat exchanger 11 and heat is exchanged with room air, whereby the room is cooled. Thereafter, the refrigerant returns to the compressor 116 through the four-way valve 118 and the accumulator 117.

  When the operation mode is set to perform the dry operation, the four-way valve 118 is switched as indicated by a solid arrow, and the refrigerant flows as indicated by a solid arrow. Then, the room is dehumidified by performing a weak cooling operation having a cooling capacity lower than that of the cooling operation.

  When the heating mode is set to the operation mode, the four-way valve 118 is switched as indicated by the dashed arrow, and the refrigerant flows as indicated by the dashed arrow. The refrigerant is discharged from the compressor 116 and flows into the indoor heat exchanger 11 through the four-way valve 118. The indoor heat exchanger 11 condenses the refrigerant and exchanges heat with room air, thereby heating the room. Thereafter, the refrigerant is decompressed by the electric expansion valve 122 of the outdoor unit 3, evaporated by the outdoor heat exchanger 119, and then returned to the compressor 116 through the four-way valve 118 and the accumulator 117.

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

  For example, when the outside air temperature is less than 18 ° C., the heating mode is selected when the outside air temperature is less than 18 to 20 ° C. and the room temperature is less than 22 ° C., and when the outside air temperature is 22 ° C. or more and the room temperature is less than 15 ° C. The heating mode is selected when the outside air temperature is less than 18 to 20 ° C, when the outside air temperature is less than 20 to 22 ° C and the room temperature is less than 22 to 27 ° C, and when the outside air temperature is 22 ° C or more and the room temperature is less than 15 to 27 ° C. Is done. The cooling mode is selected when the outside air temperature is 20 ° C. or higher and the indoor temperature is 27 ° C. or higher.

  Next, the air supply operation performed during the on-timer operation, the air conditioning operation, the air conditioning operation stop, and the sleep operation will be described.

  FIG. 6 is a flowchart of the air supply operation during the on-timer operation. During the on-timer operation, the air-supply operation is automatically performed by turning on the on-timer switch.

  In FIG. 6, the indoor control device determines whether or not the air conditioner 1 is on standby for the on-timer operation (step S1). Next, when the indoor control device determines that the on-timer operation is on standby, the indoor control device determines whether it is within 2 hours until the on-timer operation starts (step S2). Next, when the indoor control device determines that it is within 2 hours until the on-timer operation starts, 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 the indoor control device 142 determines in step S2 that it is not within 2 hours until the on-timer operation starts, the process returns to the start and the determination in 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 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 determined as the indoor temperature. It is judged whether it is lower than (step S4).

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

  If it is determined in step S4 that the outdoor temperature is higher than the indoor temperature, the process returns to the start, and the determination in step S1 is repeated again.

  Next, the indoor temperature is compared with the outdoor temperature, and it is determined whether or not the outdoor temperature is equal to or higher than the indoor temperature (step S6).

  When 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 ended (step S7).

  If it is determined in step S6 that the outdoor temperature is lower than the indoor temperature, the process returns to step S5, and the air supply operation is continued until the outdoor temperature becomes equal to or higher than the indoor temperature.

  On the other hand, when the operation mode selected in step S3 is determined to be 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 whether the outdoor temperature is higher than the indoor temperature. It is determined whether or not (step S8).

  When it is determined that the outdoor temperature is higher than the indoor temperature, the damper 16 is opened, the air supply fan 18A is rotated, and an air supply operation in which outdoor air is taken into the room is started (step S9).

  If it is determined in step S8 that the outdoor temperature is equal to or lower than the room temperature, the process returns to the start, and the determination in step S1 is repeated again.

  Next, the indoor temperature and the outdoor temperature are compared to determine whether or not the outdoor temperature is equal to or lower than the indoor temperature (step S10). When it is determined that the outdoor temperature is equal to or lower than the indoor temperature, the damper 16 is closed, The air fan 18A is stopped, and the air supply operation is ended (step S11).

  If it is determined in step S10 that the outdoor temperature is higher than the indoor temperature, the process returns to step S9, and the air supply operation is continued until the outdoor temperature becomes equal to or lower than the indoor temperature.

  FIG. 7 is a flowchart showing an air supply operation during an air conditioning operation (cooling, drying, heating). During the air conditioning operation, the air supply operation is performed by turning on an air supply operation switch provided on 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 operation is cooling or dry, 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 lower than the indoor temperature (step S14). ).

  When it is determined that the outdoor temperature is lower than the indoor temperature, the damper 16 is opened, the air supply fan 18A is rotated, and the air supply operation in which the outdoor air is taken into the room is started (step S15).

  If it is determined in step S14 that the outdoor temperature is higher than the indoor temperature, the process returns to the start, and the determination in step S13 is repeated again.

  Next, the indoor temperature is compared with the outdoor temperature, and it is determined whether or not the outdoor temperature is equal to or higher than the indoor temperature (step S16).

  When 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).

  If it is determined in step S16 that the outdoor temperature is lower than the indoor temperature, the process returns to step S15, and the air supply operation is continued until the outdoor temperature becomes equal to or higher than the indoor temperature.

On the other hand, when the operation mode selected in step S13 is determined to be 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 whether the outdoor temperature is higher than the indoor temperature. It is determined whether or not (step S18).
If it is determined that the outdoor temperature is higher than the indoor temperature, the damper 16 is opened, the air supply fan 18A is rotated, and the air supply operation in which outdoor air is taken into the room is started (step S19).

  If it is determined in step S18 that the outdoor temperature is equal to or lower than the room temperature, the process returns to the start, and the determination in step S13 is repeated again.

  Next, the indoor temperature and the outdoor temperature are compared to determine whether or not the outdoor temperature is equal to or lower than the indoor temperature (step S20). When it is determined that the outdoor temperature is equal to or lower than the indoor temperature, the damper 16 is closed and the supply is performed. The air fan 18A is stopped, and the air supply operation is ended (step S21).

  FIG. 8 is a flowchart showing the air supply operation when the air conditioner is stopped. When the air conditioning operation is stopped, the air supply operation is performed by turning on an air supply operation switch provided on the remote controller.

  In FIG. 8, when the air supply operation switch is turned on during the stop, it is determined whether or not 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 detected by the indoor temperature sensor 131 and the outdoor temperature sensor 130 is compared with the outdoor temperature, and the outdoor temperature is lower than the indoor temperature. Whether or not (step S24).

  When it is determined that the outdoor temperature is lower than the indoor temperature, the damper 16 is opened, the air supply fan 18A is rotated, and the air supply operation in which the outdoor air is taken into the room is started (step S25).

  If it is determined in step S24 that the outdoor temperature is higher than the indoor temperature, the process returns to the start, and the determination in step S23 is repeated again.

  Next, the indoor temperature is compared with the outdoor temperature, and it is determined whether or not the outdoor temperature is equal to or higher than the indoor temperature (step S26).

  When 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 ended (step S27).

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

  On the other hand, when the operation mode selected in step S23 is determined to be 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 whether the outdoor temperature is higher than the indoor temperature. It is determined whether or not (step S28).

  When it is determined that the outdoor temperature is higher than the indoor temperature, the damper 16 is opened, the air supply fan 18A is rotated, and the air supply operation in which outdoor air is taken into the room is started (step S29).

  If it is determined in step S28 that the outdoor temperature is equal to or lower than the room temperature, the process returns to the start, and the determination in step S23 is repeated again.

  Next, the indoor temperature is compared with the outdoor temperature, and it is determined whether or not the outdoor temperature is equal to or lower than the indoor temperature (step S30).

  And if it judges that outdoor temperature is below room temperature, damper 16 will be closed, air supply fan 18A will be stopped, and air supply operation will be ended (Step S31).

  Thus, the power consumption of the air conditioner 1 can be reduced by comparing the indoor temperature and the outdoor temperature and appropriately taking outdoor air into the room.

  In addition, when the operation start time is known in advance, such as when the on-timer operation is set, when the air conditioning load before the start of operation is large, the indoor temperature is compared with the outdoor temperature and the outdoor air is appropriately taken into the room, The start-up of the air conditioner 1 can be accelerated, and the power consumption at the start-up can be reduced.

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

  First, the indoor control device 142 determines whether or not the air conditioner 1 is in the cooling or dry nighttime operation (step S41). Next, when the indoor control device 142 determines that the nighttime operation of cooling or dry is in progress, the indoor control device determines whether one hour has elapsed after the start of the nighttime operation (step S42).

  On the other hand, if it is determined in step S41 that the cooling or dry nighttime operation is not being performed, the determination in step S41 is repeated.

  Next, when it is determined in step S42 that one hour has elapsed after the start of the sleep operation, the set temperature is set back at 1 ° C. so that the user does not sleep while sleeping (step S43).

  Next, the indoor temperature detected by the indoor temperature sensor and the outdoor temperature sensor is compared with the outdoor temperature 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 indoor temperature, the damper 16 is opened, the air supply fan 18A is rotated, and the air supply operation in which the outdoor air is taken into the room is started (step S45).

  If it is determined in step S44 that the outdoor temperature is higher than the indoor temperature, the process returns to step S41, and the determination in step S41 is repeated again.

  Next, the indoor temperature and the outdoor temperature are compared to determine whether or not the outdoor temperature is equal to or higher 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, the supply fan 18A is stopped, and the supply operation is terminated (step S47).

  If it is determined in step S46 that the outdoor temperature is lower than the indoor temperature, the process returns to step S45, and the air supply operation is continued until the outdoor temperature becomes equal to or higher than the indoor temperature.

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

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

  If it is determined in step S48 that the outdoor temperature is higher than the room temperature, the process returns to step S41, and the determination in step S41 is repeated again.

  Next, the indoor temperature is compared with the outdoor temperature, and it is determined whether or not the outdoor temperature is equal to or higher 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, the supply fan 18A is stopped, and the supply operation is terminated (step S51).

  If it is determined in step S50 that the outdoor temperature is lower than the indoor temperature, the process returns to step S44, and the air supply operation is continued until the outdoor temperature becomes equal to or higher than the indoor temperature.

  As described above, when the air conditioning load at the time when the user goes to bed is small but the operation time is long, the power consumption of the air conditioner 1 can be reduced by comparing the room temperature and the outside air temperature and appropriately introducing the outside air. Can be planned.

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

  For example, in step S2 of the flowchart of FIG. 6, the indoor temperature and the outdoor temperature are detected from 2 hours before the start of the on-timer operation, and the air supply operation is started as appropriate. However, the air conditioner 1 is installed. Since it is easily predicted that the air conditioning load varies depending on the environment in which the air supply operation is performed, the user may be able to change the setting of the start time of the air supply operation as necessary.

  Further, for example, in step S43 in the flowchart of FIG. 9, the set temperature is set back to 1 ° C. However, the present invention can be applied as appropriate, for example, as long as the setting can be freely changed according to the user's preference.

It is explanatory drawing which shows the wall-hanging type air conditioner and remote control in this invention. It is a left sectional view of the indoor unit of FIG. It is a front view which shows the rear case part of the indoor unit of FIG. It is a schematic diagram which shows the refrigerant circuit and control system of the air conditioner in this invention. It is an automatic operation mode selection table of the air conditioner in the present invention. It is a flowchart of the air supply operation at the time of on-timer operation. It is a flowchart which shows the air supply driving | operation at the time of an air conditioning driving | operation. It is a flowchart which shows the air supply driving | operation at the time of an air-conditioning driving | operation stop. It is a flowchart which shows the air supply driving | operation at the time of a night driving.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Indoor unit 2C Rear case part 2f Suction port 5 Remote control 9 Outlet 12 Blower fan 15 1st ventilation path 15A Communication port (opening part)
16 Air supply damper 17 2nd ventilation path 17A Duct part 17B Inlet 18 Air supply device 18A Air supply fan 130 Outdoor temperature sensor (room temperature sensor)
131 Indoor temperature sensor (outside air temperature sensor)
140 Controller

Claims (4)

An air inlet for sucking room air, an air outlet for blowing air into the room, a first air passage communicating the air inlet and the air outlet, a heat exchanger provided in the first air passage, and the heat exchanger In an air conditioner comprising: a blower fan that blows out the temperature-controlled air into the room; and a second ventilation path that has an opening in the first ventilation path and communicates with the outside through the opening.
A room temperature sensor for detecting room temperature, an outside air temperature sensor for detecting outside air temperature, and an air supply device for introducing outside air into the room, the air supply device comprising: an air supply damper for opening and closing the opening; An air supply fan that sucks air, and is set to a heating mode and is operated when the outside air temperature is higher than room temperature and when the outside air temperature is set to a cooling mode and the outside air temperature is lower than room temperature. Air conditioner.   The air conditioner according to claim 1, wherein the air supply device is operated by operating a switch regardless of whether the air conditioning operation is performed or when the air conditioning operation is stopped.   The air conditioner includes an on-timer function for starting an air-conditioning operation at a set time, and the air supply device is operated from a predetermined time before the air-conditioning operation is started during the on-timer operation. The air conditioner according to 1.   The said air conditioner is provided with the night operation function which raises setting temperature after predetermined time progress, The said air supply apparatus is operated after raising the setting temperature of night operation. Air conditioner.

Images