JP2008116097A - Indoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner, which contributes to prevention of global warming by improving maintainability, comfortability, and energy-saving performance of an indoor unit, while it has little restriction of installation on the wall surface of a room and can be installed in many places. <P>SOLUTION: The indoor unit of the air conditioner is provided with a filter cleaning device for removing dust adhering to a filter for passing the air for air conditioning by heat exchange, a dust box for storing the removed dust is disposed on the upstream side of an air current from a heat exchanger, and the width of the indoor unit is formed 800 mm or less wide. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner.

  A conventional air conditioner indoor unit includes a suction nozzle having a suction hole for sucking dust adhering to the indoor unit, and a filter cleaning device having a suction / exhaust device connected to the suction nozzle for sucking and discharging dust and indoor air. And an exhaust duct having one end connected to the filter cleaning device and the other end communicating with the outside of the filter, and discharges one or both of dust sucked from the filter cleaning device and indoor air from the exhaust duct. (For example, refer to Patent Document 1).

JP 2006-183996 A (page 4, FIG. 4)

  The above-described air conditioner has a ventilation device and a filter cleaning device, so that the comfort of the user is increased, but an exhaust device for discharging the removed dust to the outdoors is provided on the side of the indoor unit. For this reason, the width dimension of the indoor unit becomes large, and the place where the indoor unit can be installed is limited. Conversely, if the width of the indoor unit is reduced in order to increase the number of places where it can be installed, a space for the exhaust system is required, so the width of the cross flow fan and the width of the heat exchanger are reduced accordingly. The energy-saving performance in air-conditioning operation will deteriorate. Further, since the entire room is always air-conditioned regardless of the presence or absence of a person and the position of the person, energy loss occurs in actual use. Therefore, when trying to obtain a compact indoor unit that can be installed in many places, there is much room for improvement in the energy-saving performance of the air conditioner. In addition, the compact indoor unit has room for improvement in maintainability and comfort.

  The present invention has been made to solve the above-described problems. The filter cleaning device prevents energy loss in air-conditioning operation caused by filter clogging due to dust, and the filter cleaning device is installed on the side surface of the indoor unit. It is installed in many places by preventing the energy-saving performance from being deteriorated by not placing it between the heat exchanger and the end of the heat exchanger, and reducing the energy loss during actual use by controlling the blowing temperature based on the detection result of the infrared sensor. The purpose is to improve the energy-saving performance of possible compact indoor units, and in turn to contribute to the prevention of global warming.

  The air conditioner according to the present invention includes a filter cleaning device for removing dust attached to the filter, and a dust box for collecting the removed dust is disposed on the upstream side of the air flow from the heat exchanger. The width dimension is 800 mm or less.

  In the air conditioner of the present invention, the filter cleaning device prevents energy loss caused by filter clogging due to dust, and the filter cleaning device is not disposed between the side surface of the indoor unit and the end of the heat exchanger. Improve energy-saving performance of compact indoor units that can be installed in many locations by preventing deterioration of energy-saving performance and reducing energy loss during actual use by controlling the blowout temperature based on the detection results of the infrared sensor installed in the indoor unit. And can contribute to the prevention of global warming.

Embodiment 1 FIG.
FIGS. 1 to 7 are views showing an air conditioner according to Embodiment 1 of the present invention. FIG. 1 is an installation top view of an indoor unit of the air conditioner, FIG. 2 is an explanatory diagram of a wall shape of a house, and FIG. 4 is a perspective view of the indoor unit of the air conditioner, FIG. 5 is a perspective view of the indoor unit of the air conditioner, and FIG. 5 is a diagram showing the relationship between the width dimension of the cross flow fan and the width of the heat exchanger and the APF improvement rate of the air conditioner. Fig. 6 is a noise characteristic diagram of NZ sound comparison with and without a dust box. Fig. 7 is a case where heating is performed by controlling the blowing temperature only by the suction temperature, and the floor temperature is detected by an infrared sensor, and blowing is performed at the perceived temperature. It is a graph which shows the difference of the power consumption at the time of controlling only temperature and heating only an area with people.

  Currently, the energy saving of air conditioners, which are considered to be the highest power consumption among the devices used in the home, is a social effort to suppress global warming. In particular, the separate type that connects one wall-mounted indoor unit and one outdoor unit is the mainstream form of air conditioners used at home. The higher the regulation value, the higher the energy-saving equipment, the larger the size, and the larger the horizontal and vertical widths of indoor units. And as for the model with high energy-saving property, the width of the indoor unit is 870 mm to 890 mm.

  On the other hand, the housing environment has been diversified in recent years. For example, in the Japanese room, the use of four-dimensional pillars has increased due to the increasing demand for earthquake resistance. In this case, indoor units can be installed. The width of such a space is about 788 mm from the width between the four columns. In addition, in living rooms, for example, the size of the window becomes large due to demands for interior properties, and the number of cases in which the vertical space of the space above the window where the indoor unit can be installed is about 300 mm is increasing, and the installation space for the indoor unit is reduced. Tend. Furthermore, the integration of the living room with the dining room and kitchen has led to an increase in the size of the room.

  Therefore, since the indoor unit of the air conditioner with high energy saving performance is increasing in size, the installation space of the indoor unit tends to be reduced due to the residential environment. There is an increasing number of cases that cannot be installed, and there is a problem that the spread of energy-saving indoor units does not progress. According to market research, the composition ratio of indoor units with a width of 800 mm or more is 18%, whereas the composition ratio of indoor units with a width of less than 800 mm is 82%, and the widespread use of energy-saving indoor units with a large width has not progressed. I understand.

In FIG. 1, reference numeral 1 denotes an indoor unit of a wall-mounted air conditioner according to Embodiment 1 of the present invention, 32 denotes an attachment / detachment mechanism for a grill 2 serving as a design surface, and 31 denotes an installation for installing the indoor unit 1 on a wall surface 41. Plate, 41 is a wall surface between three scales in the form of a Japanese-style room, 42 is a side wall between three scales in the form of a Japanese-style room, 43 is a four-dimensional column between three scales in the form of a Japanese-style room, and 46 is between three scales in the form of a Japanese-style room A width 47 between the four pillars indicates a dimension between the side wall 42 between the indoor unit 1 and the three scales in the form of a Japanese-style room.
The width of the four-dimensional column 43 is about 121 mm, and the width 46 between the four-dimensional columns between the three types in the form of a Japanese-style room is about 788 mm. In the indoor unit 1, the width of the surface in contact with the wall surface 41 through the installation plate 31 is 788 mm or less, and the surface not in contact with the wall surface, that is, the maximum width of the indoor unit is 800 mm or less. The grill 2 provided on the front side of the indoor unit can be attached and detached by using the attachment / detachment mechanism 32.

  By setting the width of the surface contacting the wall 41 of the indoor unit through the installation plate 31 to 788 mm or less, it becomes possible to install it in the width 46 between the four-dimensioned pillars, which is markedly greater than models with a width of 788 mm or more. It can be installed in many places. The width of the surface not in contact with the wall surface 41 and the installation plate 31, in other words, the maximum width of the indoor unit is set to 800 mm or less, so that the dimension between the side wall 42 between the indoor unit 1 and the three scales in the form of a Japanese-style room. 47 can be set to about 55 mm, and a clearance dimension necessary for installing the indoor unit 1 can be obtained. Therefore, by providing indoor units with high energy-saving performance with a maximum width of 800 mm or less and a width of the surface contacting the wall on the back of the indoor unit via the installation plate that is 788 mm or less, the user can be placed in many places. Energy-saving indoor units can be installed, and the spread of energy-saving indoor units is promoted, which can contribute to the prevention of global warming.

In FIG. 2A, 44 is a window of the room, 45 is a ceiling of the room, and 48 is a floor of the room. As shown in FIG. 2B, in the case of a Western-style room, the ceiling height A is 2400 mm and the window height B is 2000 mm, so the C dimension between the upper end of the window 44 and the ceiling 45 is about 400 mm, but the curtain rail is about 70 mm. Since the suction space required between the air inlet 4 on the upper surface of the indoor unit 1 and the ceiling 45 is about 30 mm, the height dimension at which the indoor unit 1 of the air conditioner can be installed is about 300 mm. is there. Therefore, it is possible to install the indoor unit 1 on a window of a Western-style room having a large window by configuring the height dimension of the indoor unit 1 to be 300 mm or less, and much more places than an indoor unit having a height dimension of 300 mm or more. It becomes possible to install in.
Therefore, by providing indoor units with high energy-saving performance with a height dimension of 300 mm or less, users can install energy-saving indoor units in many places and promote the spread of energy-saving indoor units. It can contribute to the prevention of global warming.

  3 and 4, reference numeral 1 denotes an indoor unit of an air conditioner that air-conditions indoor air. The air inlet is covered with the grill 2 and the panel 3 on the upper front side facing the room where the indoor unit 1 is installed. 4, and an air outlet 5 whose opening direction and size are regulated by a vertical air direction variable vane (up and down air direction control means) 52 is provided on the lower front side of the front, and the air outlet 4 is connected to the air inlet 4. An air path leading to 5 is formed. A filter 6 that removes foreign matter from the passing room air, a heat exchanger 7 that exchanges heat between the passing room air, and a crossflow fan 8 are disposed in the air path, and the upstream side of the crossflow fan 8 is the heat exchanger. A suction air passage for air surrounded by the vessel 7 is formed, and a blowout air passage defined by the nozzle portion 9 and the box portion 10 is formed on the downstream side of the cross flow fan 8. The heat exchanger 7 includes a front heat exchanger 7a and a rear heat exchanger, and is installed in a substantially inverted V shape.

  In the air conditioner configured as described above, first, when the power is turned on and the compressor (not shown) compresses and discharges the refrigerant, the refrigerant flows into the heat exchanger 7 of the indoor unit 1, and the cross flow. When the fan 8 rotates, the indoor air sucked from the air suction port 4 facing the upper side of the heat exchanger 7 removes dust through the filter 6 and then flows into the heat exchanger 7. After heat exchange with the refrigerant, the air is blown into the room from the air outlet 5. At this time, air is blown out in a direction corresponding to the positions of the up / down air direction variable vanes (up / down air direction control means) 52 and the left / right air direction variable vanes (left / right air direction control means) 53. The user can set the positions of the up / down airflow direction variable vane 52 and the left / right airflow direction variable vane 53 manually or with a remote controller. Further, by detecting the temperature distribution in the room and the position of the person with the infrared sensor 51, the indoor unit can automatically determine the positions of the up-and-down wind direction variable vane 52 and the left-right wind direction variable vane 53. Thereafter, the room air is again sucked from the air inlet 4. Since this series of operations is repeated, as a result, the indoor air is dedusted, cooled or warmed, and the air quality of the indoor air changes.

  The filter 6 is installed between the air suction port 4 and the heat exchanger 7, and has a function of collecting dust that flows in along with air from the air suction port 4 before entering the heat exchanger 7. . The filter cleaning device 21 includes a moving device (not shown) that moves the filter 6, a pressure unit 21 c that presses the filter 6 against the brush 21 a, a brush 21 a that collects dust adhering to the filter 6, and the collected dust And a scraping plate 21d that peels off the dust collected on the brush 21a and drops it on the dust box 21b, and periodically removes the dust adhering to the filter 6. Can be kept clean, and the user can save the trouble of cleaning the filter 6. Furthermore, since the filter cleaning device 21 prevents dust from accumulating on the filter 6, it is possible to prevent the filter 6 from being clogged due to dust accumulation and causing energy loss. This dust box 21b is a length corresponding to the width direction of the filter 6 and has a storage space for predetermined dust and the like, and has been subjected to antibacterial and antifungal treatments, so that bacteria and fungi are prevented from propagating in the collected dust. be able to. Further, the filter cleaning device 21 is disposed upstream of the front heat exchanger 7 a in the air flow, so that the filter cleaning device 21 is disposed between the fin stack direction end of the heat exchanger 7 and the side surface of the indoor unit 1. Since 21 is not arranged, the filter cleaning device 21 does not reduce the width of the heat exchanger 7 or the cross flow fan 8 and can exhibit high energy saving performance.

  FIG. 5 is a graph showing the relationship between the width dimension of the cross flow fan, the width dimension of the heat exchanger, and the APF of the air conditioner. The horizontal axis represents the cross flow fan width / heat exchanger width increase [mm], and the vertical axis represents the APF improvement rate [%] in the air conditioner. Here, APF (Annual Performance Factor): energy consumption efficiency throughout the year. Since the conventional exhaust device (part of the filter cleaning device) has a width of 30 to 40 mm, the indoor unit 1 of the air conditioner in the present embodiment exchanges heat with the width of the crossflow fan 8 than the conventional model. Since the width of the vessel 7 can be increased by about 30 to 40 mm, the APF can be improved by about 1.2 to 1.6% as shown in FIG. In addition, the fan motor input may be deteriorated by disposing the dust box 21b in the vicinity of the air suction port 4, but this is also minimized by increasing the distance between the dust box 21b and the heat exchanger 7. The dust box 21b has less influence on the APF as compared with the deterioration of the APF by the exhaust device. Therefore, the energy-saving performance is higher when the filter cleaning device 21 is disposed upstream of the heat exchanger 7 than when the filter cleaning device 21 is disposed between the end of the heat exchanger 7 and the side surface of the indoor unit 1. Recognize.

  The method for removing the dust on the filter 6 and collecting it in the dust box 21b is a method in which the filter cleaning device 21 is not disposed between the end of the heat exchanger 7 in the fin stacking direction and the side surface of the indoor unit 1. The other energy saving effects are the same. Specifically, there are a method in which filters are provided on the top surface side and the lower surface side of the dust box, a method in which the filter cleaning mechanism is configured to be long in the vertical direction, and the filter moves to the left and right, a method in which the dust box is movable, and the like. In particular, when the dust box 21b is arranged in the vicinity of the upper portion of the front heat exchanger 7a in the manner as shown in FIG. 3, the flow rate of the airflow flowing through the region A where the cross flow fan 8 and the heat exchanger 7 are closest can be reduced. There is an effect of lowering the level of the NZ sound. FIG. 6 shows a noise characteristic diagram comparing the NZ sound of the specification (a) in which the dust box is provided near the upper portion of the front heat exchanger and the specification (b) without the dust box. It can be seen that providing a dust box is better for hearing.

  Further, an infrared sensor 51 is provided in the lower front portion of the indoor unit 1 and includes an infrared detection unit that detects infrared rays. The infrared sensor 51 is configured to be rotatable in the left-right direction, and reciprocates at a predetermined speed within a range of a predetermined angle to detect the temperature of the floor of the entire room and the subdivided temperature distribution. To do. Further, by using the difference calculation of the thermal image data, the temperature distribution on the floor surface is detected, and the presence / absence of a person and the presence position are also detected. In addition, when the user operates the remote control to select an area that he wants to air-condition or want to send a blown airflow, the indoor unit 1 sets and executes initial values of the wind direction and wind speed so as to send the blown airflow to the specified area. The process is continued until the difference between the sensory temperature and the set temperature falls within a predetermined value. The infrared sensor 51 detects the floor temperature of the designated area or the person presence area, and calculates the difference between the maximum value and the minimum value of the floor temperature. When the difference between the maximum value and the minimum value of the floor temperature in this area exceeds the threshold value, the indoor unit 1 corrects the wind direction or the wind speed so as to be equal to or less than the threshold value. As described above, the air-conditioning area is subdivided, the floor temperature is detected for each area, temperature irregularities in the entire room are found, and furthermore, air-conditioning with the floor temperature corresponding to the area designation to be air-conditioned by the remote control can be performed Energy-saving operation is possible while maintaining comfort that satisfies the user's requirements.

  FIG. 7 compares the case where the floor temperature is detected by the infrared sensor 51 mounted in the indoor unit 1 to heat only the area where people are present and the conventional heating which is operated by detecting only the suction temperature of the air conditioner. It is a graph. Power consumption [Wh] on the vertical axis and time [hr] on the horizontal axis, the dotted line is the characteristic data of the heating operated by detecting only the intake temperature with a conventional air conditioner, the solid line is the floor temperature detected by the infrared sensor Then, the characteristic data is shown in which the blowing temperature is controlled by the sensible temperature and only the area where the person is present is heated. When only the area where people are present is detected by detecting the floor temperature as in the present embodiment, power consumption can be reduced by about 40% compared to conventional heating. In addition, since the infrared sensor can automatically detect the area where people are located, it is possible to automatically air-condition only the areas where people are located without operating the remote control. Can be maintained.

  Furthermore, the presence / absence of a human body in the room is detected by the difference calculation of the thermal image data obtained from the infrared sensor, and when it is determined that no person is present in the room, control for relaxing the set temperature of the air conditioner, for example, heating operation Therefore, by controlling the temperature lower than the set temperature and by controlling the temperature higher than the set temperature in the cooling operation, it is possible to perform an operation that reduces power consumption. As another method, when it is determined that there is no person in the room, the power consumption can be similarly reduced by performing control to temporarily stop the operation of the air conditioner.

The air conditioning (refrigeration) capacity of the air conditioner is controlled by the air volume by the cross flow fan 8 and the operating frequency of the compressor. As the suction temperature of the indoor unit 1 increases with respect to the temperature set by the remote controller, the air flow capacity of the cross flow fan 8 and the operating frequency of the compressor are increased to increase the air conditioning capability. Further, as the suction temperature of the indoor unit 1 approaches the temperature set by the remote controller, the air flow capacity of the cross flow fan 8 and the operating frequency of the compressor are lowered to lower the air conditioning capacity. A sensory temperature Tt calculated from the suction temperature Ta of the indoor unit 1 and the floor temperature Tf detected by the infrared sensor 51 is calculated by the following equation.
Tt = Ta + α (Ta−Tf) (1)
Here, α is a constant.

  The perceived temperature calculated by the equation (1) increases when the floor temperature is higher than room temperature, and decreases when the floor temperature is lower than room temperature. The constant α represents the contribution of the floor temperature to the body temperature, and is generally a value around 0.5. As the floor temperature for calculating the sensible temperature, an average value of floor temperatures in an area designated by the user using a remote controller or an area detected when a person is detected by an infrared sensor is used. Then, by controlling the performance of the air conditioner at the sensible temperature calculated in consideration of the floor temperature, comfort is improved and energy saving operation is possible.

  As described above, the indoor unit of the air conditioner according to the present invention has a filter cleaning device for removing dust adhering to the filter 6, and a dust box for collecting the removed dust is disposed upstream of the air flow of the heat exchanger. The movable unit is provided with a movable infrared sensor, and the width of the indoor unit is configured to be 800 mm or less. Therefore, energy loss caused by filter clogging due to dust is prevented, and the filter cleaning device is connected to the side of the indoor unit. It can be installed in many places by preventing the energy-saving performance from deteriorating by not placing it between the ends of the heat exchanger and reducing the energy loss during actual use by controlling the blowing temperature based on the detection result of the infrared sensor. The energy-saving performance of a compact indoor unit can be improved, contributing to the prevention of global warming.

Embodiment 2. FIG.
FIG. 8 is a view showing an air conditioner according to Embodiment 2 of the present invention, and is a cross-sectional view of an indoor unit of the air conditioner.
In FIG. 8, the exhaust device 22 is disposed on the back surface of the indoor unit 1, and the dust removed from the filter by the brush by the dust removing device installed in the indoor unit is discharged to the outdoors by the exhaust device 22. It has become. Since the exhaust device 22 is disposed on the back surface of the indoor unit 1 and the width and height dimensions of the exhaust device are within the shape of the back surface of the indoor unit, heat exchange is performed to secure the space for arranging the exhaust device 22. There is no need to reduce the width of the container 7 or the width of the cross flow fan 8. Therefore, for the same reason as in the first embodiment, the indoor unit of this embodiment can also exhibit high energy saving performance.

  Moreover, since dust is discharged outdoors by the exhaust device 22, the capacity of the dust box 21b can be reduced, or the dust box can be omitted, and the indoor unit 1 can be made compact. In this example, the filter is movable and dust is removed with a brush. However, even if dust is removed using another method, the same effect can be obtained if the exhaust device is disposed on the back of the unit. It is done. Further, dust on the filter may be moved into the dust box by moving the dust box and moving on the filter.

  As described above, a filter cleaning device for removing dust adhering to the filter is installed, and an exhaust device for discharging the removed dust to the outside is disposed on the back of the indoor unit, and a movable infrared sensor is provided. Since the machine is configured with a width of 800 mm or less, energy loss caused by filter clogging due to dust is prevented, and the filter cleaning device is not disposed between the side of the indoor unit and the end of the heat exchanger. By reducing the energy loss during actual use by controlling the blowout temperature based on the detection result of the infrared sensor, the energy saving performance of compact indoor units that can be installed in many locations can be improved. It can contribute to the prevention of global warming.

It is an installation top view of the indoor unit of the air conditioner in Embodiment 1 of this invention. It is related to Embodiment 1 of this invention and is a wall surface form explanatory drawing of a house. It is sectional drawing of the indoor unit of the air conditioner in Embodiment 1 of this invention. It is a perspective view of the indoor unit of the air conditioner in Embodiment 1 of this invention. It is a characteristic view showing the relationship between the width dimension of a cross flow fan, the width dimension of a heat exchanger, and an APF improvement rate of the air conditioner in Embodiment 1 of this invention. It is a noise characteristic figure of the comparison by the presence or absence of the dust box in the front heat exchanger upper vicinity of the air conditioner in Embodiment 1 of this invention. In the first embodiment of the present invention, when the heating is performed by controlling the blowout temperature only by the suction temperature of the air conditioner, the floor temperature is detected by the infrared sensor, and the blowout temperature is controlled by the sensible temperature and only the area where people are present. It is a graph which shows the difference in power consumption at the time of heating. It is sectional drawing of the indoor unit of the air conditioner in Embodiment 2 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Air conditioner indoor unit, 2 Grill, 3 Panel, 4 Air inlet, 5 Air outlet, 6 Filter, 7 Heat exchanger, 7a Front heat exchanger, 8 Cross flow fan, 9 Nozzle part, 10 Box part , 21 Filter cleaning device, 21a Brush, 21b Dust box, 21c Pressurization part, 21d Scraping plate, 22 Exhaust device, 23 Direction of airflow flowing through the exhaust device, 31 Installation plate, 32 Grill attachment / detachment mechanism, 41 Japanese room Walls between 42, 3 side walls between 3 scales of Japanese-style room, 43 4-columns between 3-scales of Japanese-style room, 44 windows, 45 ceilings, 46 widths between 4-columns between 3 scales, 47 indoor units and Dimensions between side walls, 51 Infrared sensor, 52 Vane with variable vertical wind direction, 53 Vane with variable horizontal wind direction.

Claims (11)

A filter cleaning device for removing dust adhering to the filter was installed, and a dust box for collecting the removed dust was disposed on the upstream side of the air flow from the heat exchanger, and the width of the indoor unit was configured to be 800 mm or less. An air conditioner indoor unit. The heat exchanger has at least a front heat exchanger and a rear heat exchanger, and includes an air suction port that faces the upper side of the heat exchanger and allows indoor air to flow in, and the dust box is disposed above the front heat exchanger. 2. The indoor unit for an air conditioner according to claim 1, wherein the indoor unit is disposed upstream of an air flow flowing in from the air suction port. The said dust box is arrange | positioned so that it may be located in front of the said front heat exchanger, and may contact | connect the grill | grill used as the design surface of an indoor unit front surface, The block between a grill and a dust box was block | closed. The indoor unit of the air conditioner according to 2. The indoor unit of an air conditioner according to any one of claims 1 to 3, wherein the filter is disposed only on the top surface of the indoor unit, and a suction port is provided only on the top surface side of the indoor unit. A filter cleaning device for removing dust adhering to the filter was installed, and an exhaust device for discharging the removed dust to the outside was disposed on the back of the indoor unit, and the width of the indoor unit was configured to be 800 mm or less. An air conditioner indoor unit. An indoor unit configured with a width dimension of 800 mm or less, a movable infrared sensor provided in the indoor unit for detecting the floor temperature of the room, and provided at the outlet of the indoor unit, divided into one sheet or left and right A vertical air direction control device divided into left and right, and a left and right air direction control device, and a remote control having an area designating operation unit for designating an area where a user sends airflow, and an area designation signal is transmitted from the remote control The indoor unit sets the up / down or left / right airflow direction control device so that the airflow is sent toward the designated area, and detects the temperature unevenness of the designated area by the infrared sensor, and the temperature unevenness sets the threshold value. An air conditioner indoor unit that corrects a wind direction or a wind speed when exceeding. The indoor unit of an air conditioner according to claim 6, wherein the infrared sensor detects the floor temperature of the designated area and controls the air conditioning capability of the air conditioner based on a sensible temperature calculated from the floor temperature. . An indoor unit configured with a width dimension of 800 mm or less, a movable infrared sensor provided in the indoor unit, a vertical airflow direction control device provided at the outlet of the indoor unit and divided into one sheet or left and right, and It includes a left and right wind direction control device divided into left and right, detects the presence position of the person in the room by the difference calculation of the thermal image data obtained from the infrared sensor, determines the area to send the airflow by the detected presence position, The vertical and horizontal wind direction control device is set so that the airflow is sent toward the existence area, and the temperature variation in the existence area is detected by the infrared sensor. Or the indoor unit of the air conditioner characterized by correcting a wind speed. 9. The indoor unit of an air conditioner according to claim 8, wherein the infrared sensor detects a floor temperature of the existence area and controls an air conditioning capacity of the air conditioner based on a sensible temperature calculated from the floor temperature. . An indoor unit configured with a width dimension of 800 mm or less, a movable infrared sensor provided in the indoor unit, a vertical wind direction control device provided at the outlet of the indoor unit and divided into one sheet or left and right, and left and right A left and right wind direction control device divided into two, detecting the presence or absence of a human body in the room by the difference calculation of the thermal image data obtained from the infrared sensor, and if there is no person in the room, the power consumption of the air conditioner An indoor unit of an air conditioner characterized by performing a reduced operation. The indoor unit of an air conditioner according to claim 10, wherein power consumption is reduced by performing control to loosen a set temperature of the air conditioner or control to temporarily stop operation.

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