JP6952266B2 - Air conditioner - Google Patents

Description

The present invention relates to an air conditioner for air-conditioning a room, and more particularly to an air conditioner in which the air blown from the air outlet has a different temperature range.

In a general air conditioner, in order to suppress noise and vibration in the room, a large noise source and a device that becomes a vibration source are usually arranged in the outdoor unit, and a device with less noise and vibration is used as the indoor unit. The arranged separate type is used. The main configuration of a general separate type air conditioner is that the outdoor unit is equipped with a compressor, outdoor heat exchanger , outdoor blower fan, four-way valve, expansion valve, etc., and the indoor unit is equipped with an expansion valve. An indoor heat exchanger, an indoor blower fan, a control unit, etc. are provided. The outdoor unit and the indoor unit are mechanically and electrically connected to each other by a refrigerant pipe and a control wiring. The indoor unit in the separate type air conditioner configured in this way is installed on the wall surface of the room or the like, and the air conditioning operation is performed so that the temperature inside the room becomes a desired temperature.

From the viewpoint of protecting the global environment and preventing global warming in recent years, improvement of energy saving performance is required for air conditioners as well. In order to improve the energy saving performance of the air conditioner, it is important to improve the energy efficiency of each device constituting the air conditioner and reduce the power consumption of the device as a whole. In particular, in an air conditioner, instead of performing unnecessary air conditioning so that the entire room reaches the desired temperature, air conditioning is performed so that at least the required area in the room reaches the desired temperature to reduce power consumption. Various configurations have been proposed.

For example, there has been proposed an attempt to perform comfortable air conditioning called so-called head cold foot heat by sending air of different temperatures into a room from an outlet which is an air outlet of an indoor unit (see, for example, Patent Document 1). In the air conditioner of Patent Document 1, a plurality of refrigerant passages are provided in the indoor unit, each refrigerant passage is specified by opening / closing control of a plurality of on-off valves, and the refrigerant flows through the specified refrigerant passage. Air conditioning is performed according to different operation modes.

Japanese Unexamined Patent Publication No. 8-68568

In the air conditioner of Patent Document 1, a non-heat exchange portion is formed in a part of the heat exchanger of the indoor unit by controlling the opening and closing of the on-off valve, and the air passing through the non-heat exchange portion (raw). The air) is sent to the outlet as it is, and together with the heat-exchanged air, it is blown out from the outlet into the room to be air-conditioned. As described above, the air conditioner of Patent Document 1 has a configuration in which heat-exchanged air (warm air or cold air) and live air are blown out in an overlapping manner from an outlet to improve efficiency, especially during stable operation. ..

In such a conventional air conditioner, the purpose is to air-condition the entire room within a predetermined temperature range, and the person is comfortable according to the position of the person existing in the room, the amount of activity of the person, and the like. It was difficult to actively air-condition the temperature so that it would be felt. In particular, when there are a plurality of people in the room to be air-conditioned, it is impossible to perform air-conditioning so that the temperature is comfortable for each person.

An object of the present invention is to perform optimum air conditioning in a room to be air-conditioned, and by performing person-centered air conditioning in the room, wasteful air conditioning is suppressed and power saving is achieved. The purpose is to provide an air conditioner that can perform air conditioning that people in Japan feel comfortable with.

In one aspect of the air conditioner of the present invention, the compressor, the indoor heat exchanger, the decompressor, and the outdoor heat exchanger have a refrigerant circuit in which the refrigerant circulates, and are composed of an indoor unit and an outdoor unit. Being done
The indoor unit includes an indoor heat exchanger and
An indoor fan that exchanges heat from the suction port formed in the upper part of the indoor unit with the indoor heat exchanger to form an air flow blown out from the outlet formed in the lower part of the indoor unit.
A rear side guide portion that guides the airflow from the indoor fan in the blowout direction to the blowout port, and
A front side guide portion which is arranged to face the back side guide portion, guides the airflow from the indoor fan to the outlet together with the back side guide portion, and forms the outlet together with the back side guide portion. When,
Provided with a rotatable wind direction louver assembly that directs the air flow guided by the outlet up, down, left and right.
The wind direction louver assembly has a vertical wind direction louver and a left and right wind direction louver.
The vertical wind direction louver is an upper blade plate on the front side of the outlet, a lower blade plate on the back side of the outlet, and a middle stage arranged between the upper blade plate and the lower blade plate. It is composed of three-stage blade plates, and each blade plate is configured to rotate independently in the vertical direction.
The left and right wind direction louvers are provided at the upper left and right blades provided at the first outlet between the upper blade plate and the middle blade plate, and at the second outlet between the lower blade plate and the middle blade plate. With the provided lower left and right blades,
The middle stage blade plate is divided into two in the left-right direction, and each is configured to be independently rotatable, and the left and right blow-out directions at each of the first outlet and the second outlet can be changed up and down. The outlet has substantially four outlet directions.

According to the present invention, an air conditioner capable of optimally air-conditioning a room to be air-conditioned is provided, and wasteful air-conditioning is suppressed by performing person-centered air-conditioning in the room. At the same time, it is possible to reliably perform air conditioning that people in the room feel comfortable with.

A vertical sectional view showing a schematic configuration of an indoor unit in the air conditioner according to the first embodiment of the present invention. Perspective view from the lower right side of the indoor unit of the air conditioner of the first embodiment. A perspective view of the indoor unit of the air conditioner according to the first embodiment as viewed from above on the right side. Schematic diagram of the refrigerant circuit in the air conditioner of the first embodiment The figure which shows the specific refrigerant passage in the heat exchanger of the air conditioner of Embodiment 1. A graph showing the temperature of each part of the heat exchanger during the heating operation of the air conditioner of the first embodiment. Ph diagram in the air conditioner of the first embodiment Graph showing the change in heating capacity in the ratio occupied by the second heat exchanger region for all of the heat exchange area in the heat exchanger, the change in the difference between the outlet air temperature Contour diagram when heat exchange is performed in the first heat exchange region and the second heat exchange region during the heating operation of the air conditioner of the first embodiment. The figure for demonstrating the condition for defining the separator of the indoor unit in the air conditioner of Embodiment 1. A vertical sectional view showing an example configured to satisfy condition 1 during the heating operation of the air conditioner according to the first embodiment. A vertical cross-sectional view showing an example configured to satisfy the condition 2 during the heating operation of the air conditioner of the first embodiment. A perspective view showing an example of specific rotation positions of the vertical wind direction louver and the left and right wind direction louver in the air conditioner of the first embodiment. A perspective view showing an example of specific rotation positions of the vertical wind direction louver and the left and right wind direction louver in the air conditioner of the first embodiment. The figure explaining the effect of the mini vane in the wind direction louver assembly in the air conditioner of Embodiment 1. A flowchart showing a filtering process of a hot / cold feeling detection control executed in the air conditioner of the first embodiment. A flowchart showing air conditioning control by a feeling of warmth and coldness executed in the air conditioner of the first embodiment.

The air conditioner of the first aspect according to the present invention has a refrigerant circuit in which a refrigerant circulates in a compressor, an indoor heat exchanger, a decompressor, and an outdoor heat exchanger, and is used in an indoor unit and an outdoor unit. Configured
The indoor unit includes an indoor heat exchanger and
An indoor fan that exchanges heat from the suction port formed in the upper part of the indoor unit with the indoor heat exchanger to form an air flow blown out from the outlet formed in the lower part of the indoor unit.
A rear side guide portion that guides the airflow from the indoor fan in the blowout direction to the blowout port, and
A front side guide portion which is arranged to face the back side guide portion, guides the airflow from the indoor fan to the outlet together with the back side guide portion, and forms the outlet together with the back side guide portion. When,
Provided with a rotatable wind direction louver assembly that directs the air flow guided by the outlet up, down, left and right.
The wind direction louver assembly has a vertical wind direction louver and a left and right wind direction louver.
The vertical wind direction louver is an upper blade plate on the front side of the outlet, a lower blade plate on the back side of the outlet, and a middle stage arranged between the upper blade plate and the lower blade plate. It is composed of three-stage blade plates, and each blade plate is configured to rotate independently in the vertical direction.
The left and right wind direction louvers are provided at the upper left and right blades provided at the first outlet between the upper blade plate and the middle blade plate, and at the second outlet between the lower blade plate and the middle blade plate. It is equipped with the provided lower left and right blades.
The air conditioner of the first aspect according to the present invention configured as described above has a configuration capable of performing more fine wind direction control in the room to be air-conditioned.

In the air conditioner of the second aspect according to the present invention, in the upper left and right blades of the first aspect, a plurality of blades having substantially the same shape are arranged side by side, and left and right with the center in the left and right direction as a boundary. It is configured to be divided into two blade groups, and each of the left and right blade groups rotates independently in the left-right direction, and the blowing direction can be changed to the left and right.
The lower left and right blades are composed of a plurality of blades having substantially the same shape arranged side by side and divided into left and right blade groups with the center in the left and right directions as a boundary, and the left and right blade groups are independent in the left and right directions. It may be configured so that the blowing direction can be changed to the left or right by rotating. By making this configuration, it becomes possible to perform more detailed wind direction control.

In the air conditioner of the third aspect according to the present invention, the middle stage blade plate in the first or second aspect is divided into two in the left-right direction and each is configured to be independently rotatable. The left and right outlets at the first outlet and the second outlet may be changed up and down, and the outlet may have substantially four outlet directions. By making this configuration, it becomes possible to perform more detailed wind direction control.

In the air conditioner of the fourth aspect according to the present invention, the indoor heat exchanger of the third aspect has a first heat exchange region and a second heat exchange region, and the first heat exchange region. And the second heat exchange region is configured so that the refrigerant flows through the pressure regulator.
During the heating operation, the pressure of the pressure regulator causes the first heat exchange region to form the first condensation temperature, and the second heat exchange region to form the second condensation temperature lower than the first condensation temperature. ,
The air heat-exchanged by the second condensation temperature in the second heat exchange region is mainly blown out from the first outlet, and the air heat-exchanged by the first condensation temperature in the first heat exchange region is blown out by the second outlet. It may be configured to be primarily blown out of the mouth. With this configuration, it is possible to individually and simultaneously control the temperature of a plurality of regions in the room.

Hereinafter, an embodiment of an embodiment of the air conditioner of the present invention will be described with reference to the drawings. The same element may be designated by the same reference numeral, and the description may be omitted if the description is duplicated. In addition, the drawings schematically show each component as a main body for easy understanding.

The embodiments described below are all examples of the air conditioner of the present invention. For example, the numerical values, shapes, configurations, steps, and order of steps shown in the embodiments are exemplified. However, the contents of these examples do not limit the present invention. In the present specification, the left-right direction indicates the left-right direction toward the target device or device. Among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept are described as arbitrary components. In all the embodiments, the configurations other than the deformed portion in each of the modified examples are the same, and the configurations described in the respective modified examples can be combined and configured, and the effects of the respective configurations are exhibited. be. Further, although a specific configuration will be described in the air conditioner of the following embodiment, the present invention is not limited to the specific configuration of the following embodiment, and the same technical idea is used. It includes various air conditioners to which the configuration based on is applied.

<< Embodiment 1 >>
The air conditioner of the first embodiment is a so-called separate type air conditioner in which the indoor unit and the outdoor unit are connected to each other by a refrigerant pipe, a control wiring, or the like. A heat pump is composed of an indoor unit and an outdoor unit, and the outdoor unit is provided with a compressor. The indoor unit in the air conditioner of the first embodiment is a wall-mounted indoor unit mounted on a wall surface of the room.

FIG. 1 is a vertical cross-sectional view showing a schematic configuration of an indoor unit in the air conditioner according to the first embodiment of the present invention. The air conditioner of the first embodiment shown in FIG. 1 shows one state during the air conditioning operation.

As shown in FIG. 1, the indoor unit 1 is an upper surface opening 2a formed in the upper part of the indoor unit 1 which is an air suction port, and a blower port for blowing out heat-exchanged air inside the indoor unit 1. It has an outlet 2b. Further, the outlet 2b formed in the lower part of the indoor unit 1 is a wind direction louver assembly which is a means for changing the wind direction, which can open and close the outlet 2b and adjust the air blowing direction in all directions of up, down, left and right. 3 is provided. The wind direction louver assembly 3 is composed of a vertical wind direction louver 30 composed of a plurality of blade plates for changing the wind direction in the vertical direction, and a left and right wind direction louver 40 composed of a plurality of blade plates for changing the wind direction in the horizontal direction. ing.

Inside the indoor unit 1, there is a filter 4 for removing dust contained in the indoor air, an indoor heat exchanger 5 for heat exchange of indoor air taken in through the filter 4 from the upper surface opening 2a, and an upper surface opening. An indoor fan 6 is provided, which exchanges heat with the heat exchanger 5 for air sucked from the suction port of the part 2a to form an air flow to be blown into the room from the blowout port 2b. As the indoor fan 6, for example, a horizontally placed cylindrical cross-flow fan that generates an air flow in the circumferential direction is used. As shown in FIG. 1, the heat exchanger 5 on the indoor side surrounds approximately three sides of the front side, the upper side, and the back side, which are configured in a substantially inverted V shape, excluding the direction of blowout below the indoor fan 6. It is composed of a back side heat exchange part 5a, an upper first heat exchange part 5b in the front side heat exchange part, and a lower second heat exchange part 5c.

Further, inside the indoor unit 1, the ventilation passage 7 from the downstream side of the indoor fan 6 to the outlet 2b is arranged on the downstream side of the indoor fan 6 and provided on the back side to blow out the airflow on the back side. A rear guider 8 which is a rear guide portion having a function of guiding to the mouth 2b and a rear guider 8 which is provided on the front side of the indoor fan 6 facing the rear guider 8 to stabilize and guide the airflow on the front side in the ventilation passage 7. It is composed of a stabilizer 9 which is a front side guide portion having a function, and wall surfaces (not shown) on both sides of the indoor unit 1. The stabilizer (front side guide portion) 9 forms an outlet 2b together with the rear guider (rear side guide portion) 8 and has a function of guiding the air flow from the indoor fan 6 to the outlet 2b. A front panel 2c is provided on the front surface of the indoor unit 1, and the front panel 2c is configured to be openable for replacement, cleaning, and the like of the filter 4 and the like inside the indoor unit 1.

2 and 3 are perspective views showing the air conditioner of the first embodiment, and FIG. 2 is a view of the front side of the indoor unit 1 in which the air conditioner outlet 2b and the like appear from the lower right side. FIG. 3 is a view seen from the upper right side of the indoor unit 1 so as to show the upper surface opening 2b which is an air suction port in the air conditioner.

As shown in FIG. 2, a wind direction louver assembly 3 is rotatably provided at the outlet 2b, and the outlet 2b is configured to be openable and closable. The wind direction louver assembly 3 is composed of a vertical wind direction louver 30 composed of a plurality of blade plates for changing the wind direction in the vertical direction, and a left and right wind direction louver 40 composed of a plurality of blade plates for changing the wind direction in the horizontal direction. ing.

The vertical wind direction louver 30 is an upper blade plate 31 on the front side of the outlet 2b, a lower blade 33 on the back side of the outlet 2b, and a central portion of the outlet 2b. It is an upper, middle, and lower three-stage blade plate configuration having a middle-stage blade plate 32 arranged between the plate 33 and the plate 33. The middle-stage blade plate 32 between the upper-stage blade plate 31 and the lower-stage blade plate 33 has a function as a two-temperature separator at the outlet 2b as described later. Further, the middle stage blade plate 32 as a separator is divided into two at the center in the left-right direction thereof, and has a middle stage left blade plate 32a and a middle stage right blade plate 32b.

The left and right wind direction louvers 40 include upper left and right blades 40a arranged in the upper blowing region FA formed between the upper blade plate 31 and the middle blade plate 32 (separator), and the middle blade plate 32 (separator) and the lower blade. It has lower left and right blades 40b arranged in the lower blowout region BA formed between the plate 33 and the plate 33, and has a two-stage upper and lower configuration. The details of the vertical wind direction louver 30 and the left and right wind direction louvers 40 in the wind direction louver assembly 3 will be described later. In the configuration of the first embodiment, the upper outlet area FA is the first outlet, and the lower outlet area BA is the second outlet.

Further, the indoor unit 1 of the air conditioner according to the first embodiment is provided with an electrical unit (not shown) or the like, and the electrical unit includes a control unit 50 (see FIG. 1). The control unit 50 controls the drive of the vertical wind direction louver 30, the left and right wind direction louver 40, the indoor fan 6, the compressor of the outdoor unit, and the like, and controls the air conditioning operation of the air conditioner. The control unit 50 is composed of a microcomputer or the like, and controls the air conditioning operation of the air conditioner based on various information from a plurality of sensors described later.

The sensors used in the air conditioner of the first embodiment include a motion sensor 10 provided in the outdoor unit 1, a temperature / cold sensor 11, a floor temperature sensor (not shown), a solar radiation sensor (not shown), and the like. A plurality of temperature sensors (18a, 18b) for detecting the temperature of each part of the heat exchanger 5, which will be described later, are included. The human sensor 10 and the hot / cold sensor 11 are configured to detect the presence of a person, the movement of a person, thermal image information, and the like based on infrared rays from an air-conditioned region in a room. Further, the floor temperature sensor detects the floor temperature in the air-conditioned area, and the solar radiation sensor detects the sunlight state in the air-conditioned area. Various information detected by various sensors is sent to the control unit 50, and the air conditioner is driven and controlled based on the various information, and a part of the detection state by various sensors is on the front surface of the indoor unit 1. It is displayed on the light emitting display unit 19 provided on the panel 2c.

The motion sensor 10 is a pyroelectric element type infrared sensor that detects infrared rays radiated from the human body. The motion sensor 10 detects the presence or absence of a person and the movement of a person by changing the amount of infrared rays in the air-conditioned area.

The thermal sensation sensor 11 is a thermopile sensor, and is configured by arranging a large number of thermoelectric element type sensor elements in a matrix. A condenser lens is provided in front of the matrix-shaped sensor element. In the first embodiment, for example, the sensor elements are arranged in an 8 × 8 matrix. In the thermal sensation sensor 11 of the first embodiment, the sensor elements arranged in a matrix are rotated and scanned in a state of being tilted obliquely with respect to the rotation axis to show thermal image information. It is configured to output a signal.

The thermopile sensor, which is the thermal sensation sensor 11 in the air conditioner of the first embodiment, is used for thermal image information (temperature distribution information) such as a floor surface and a wall surface in a room which is an air-conditioned area, and / or a person existing in the room. It forms two-dimensional thermal image information of thermal image information (temperature distribution information). This thermal image information is formed by the amount of infrared rays detected by the hot / cold sensation sensor 11. The details of the air conditioning control using the motion sensor 10 and the hot / cold sensor in the air conditioner of the first embodiment will be described later.

[Construction of refrigerant circuit]
FIG. 4 is a diagram schematically showing a refrigerant circuit in the air conditioner according to the first embodiment of the present invention. In the air exchanger of the first embodiment, it is arranged so as to surround substantially three sides of the front side, the upper side, and the back side, which are configured in a substantially inverted V shape except for the direction of blowing below the indoor fan 6. In the heat exchanger 5 on the indoor side, the first heat exchange area X is formed by the back side heat exchange section 5a and the front side first heat exchange section 5b, and the second heat exchange area Y is formed by the front side second heat exchange section 5c. Is configured. As shown in the refrigerant circuit of FIG. 4, it is composed of a first heat exchange region X composed of a back side heat exchange unit 5a and a front side first heat exchange unit 5b, and a front side second heat exchange unit 5c. A pressure regulator 12 for adjusting the refrigerant pressure is provided in the refrigerant conduit between the second heat exchange region Y and the second heat exchange region Y. In the first embodiment, the pressure regulator 12 during the heating operation functions as an expansion valve for lowering the refrigerant pressure. By using a expansion valve having a pressure loss as low as that of a straight pipe when fully opened, it is possible to prevent a decrease in efficiency during a normal heating operation or a normal cooling operation.

As shown in FIG. 4, in the refrigerant circuit in the air conditioner of the first embodiment, the electric four-way valve 14 is connected to the discharge side of the compressor 13, and the refrigerant from the compressor 13 exchanges heat during the heating operation. It is configured to be fed to the back side heat exchange portion 5a and the front side first heat exchange portion 5b of the vessel 5. The refrigerant sent to the back side heat exchange section 5a and the front side first heat exchange section 5b is sent to the front side second heat exchange section 5c via the pressure regulator 12. In the refrigerant circuit during heating operation, the refrigerant passes from the front side second heat exchange section 5c through the outdoor expansion valve, the decompressor 15 and the outdoor heat exchanger 16, to the compressor 13 via the electric four-way valve 14. It flows and a refrigerant circulation circuit is formed. An outdoor fan 17 is provided in the vicinity of the outdoor heat exchanger 16. During the cooling operation, the electric four-way valve 14 is switched and the flow direction of the refrigerant is reversed.

[ Heat exchanger configuration]
As described above, in the air conditioner of the first embodiment, the first heat exchange region X composed of the back side heat exchange unit 5a and the front side first heat exchange unit 5b, and the front side second heat exchange unit A pressure regulator 12 is provided between the second heat exchange region Y configured by 5c, and a pressure difference can be provided between the refrigerant pressures of the first heat exchange region X and the second heat exchange region Y. Is.

FIG. 5 is a diagram showing a specific refrigerant passage in the heat exchanger 5 (5a, 5b, 5c) as an example in the configuration of the air conditioner of the first embodiment, and is a diagram showing an indoor unit 1 of the air conditioner. It is a vertical sectional view. The flow direction of the refrigerant in the refrigerant passage shown in FIG. 5 indicates the heating operation.

As shown in FIG. 5, in the heat exchanger 5 of the air conditioner of the first embodiment, the refrigerant during the heating operation is the four refrigerant inlets (A, B, C, D) in the first heat exchange region X. Flow in from. That is, the refrigerant flows from the two refrigerant inlets (A and B) of the back side heat exchange portion 5a and the two refrigerant inlets (C and D) of the front side first heat exchange portion 5b in the first heat exchange region X. Be supplied. The refrigerant supplied from the two refrigerant inlets (A and B) of the back side heat exchange section 5a exchanges heat at the back side heat exchange section 5a, and the pressure regulator 12 is exchanged from the two outlet sections (E and F). Will be sent to. Similarly, the refrigerant supplied from the two refrigerant inlets (C, D) of the front side first heat exchange section 5b exchanges heat at the front side first heat exchange section 5b, and the two outlet sections (G, It is sent from H) to the pressure regulator 12. The refrigerant decompressed by the pressure regulator 12 during the heating operation is sent to the four introduction portions (I, J, K, L) of the front side second heat exchange portion 5c, which is the second heat exchange region Y. The refrigerant heat-exchanged in the front side second heat exchange section 5c is provided from four outlets (M, N, O, P) on the front side first heat exchange section 5b on the external air intake side. It is sent to the introduction unit (Q) of the cooling unit 5d. Then, the refrigerant heat-exchanged in the supercooling section 5d is sent from the lead-out section (R) to the introduction section (S) of the supercooling section 5e provided on the outside air intake side in the back side heat exchange section 5a. The lead-out unit (T) of the supercooling unit 5e serves as a refrigerant outlet in the heat exchanger 5 during the heating operation. The flow of the refrigerant during the refrigerant operation is the reverse flow during the heating operation.

As described above, in the heating operation of the air conditioner of the first embodiment, the refrigerant from the compressor 13 is sent to the first heat exchange area X in the heat exchanger 5. As a result, since the high temperature refrigerant is flowing in the first heat exchange region X, the first heat exchange region X becomes a heat exchange region that forms the first condensation temperature, which is a high temperature. The refrigerant derived from the first heat exchange region X is then decompressed in the pressure regulator 12 to become a medium temperature refrigerant, and forms a second condensation temperature lower than the first condensation temperature in the front side second heat exchange section 5c. It is sent to the second heat exchange region Y. In the first embodiment, the high temperature in the two-temperature operation mode described later is a temperature relatively higher than the medium temperature blown out at that time, and the medium temperature is a temperature between the high temperature and the room temperature. .. For example, in the configuration of the first embodiment, the high temperature blown out is in the range of 30 ° C. to 55 ° C., and the medium temperature is in the range lower than the high temperature by a predetermined temperature. The relative temperature difference between the two is 5 ° C. or higher. The high temperature and the medium temperature are determined based on the setting conditions and various information from various sensors and the like.

As described above, during the heating operation of the air conditioner of the first embodiment, the heat exchanger 5 of the indoor unit 1 exchanges heat with two types of temperatures (high temperature and medium temperature). 6, during the heating operation of the air conditioner of the first embodiment, is a graph showing the temperature of each part in the first heat exchange zone X and the second heat exchange area Y of the heat exchanger 5. In the graph of FIG. 6, the temperature graph shown by the broken line is the temperature transition of each part in the heat exchanger 5 during normal operation (one temperature operation mode), and the temperature graph shown by the solid line is the heat exchanger 5 in the two temperature operation mode. It is the temperature transition of each part in. As shown in FIG. 6, it can be understood that during normal operation, heat exchange at 40 ° C. is performed in the first heat exchange region X and the second heat exchange region Y of the heat exchanger 5. On the other hand, by lowering the refrigerant pressure with the pressure regulator 12, heat exchange at 40 ° C. is performed in the first heat exchange region X, and heat exchange at 33 ° C. is performed in the second heat exchange region Y. By adjusting the refrigerant pressures in the first heat exchange region X and the second heat exchange region Y with the pressure regulator 12 in this way, the air conditioner has a one-temperature operation mode (normal operation) and a two-temperature operation mode. It is possible to air-condition the air-conditioned area in the room to a desired temperature by switching between.

FIG. 7 is a ph diagram of the air conditioner according to the first embodiment. The vertical axis is the refrigerant pressure [Mpa], and the horizontal axis is the specific enthalpy [kJ / kg]. In FIG. 7, reference numeral 1 → reference numeral 2 indicates a state of refrigerant compression by the function of the compressor 13. In reference numeral 2 → reference numeral 3 in FIG. 7, the first heat exchange region X functions as the first condenser, and the heat of condensation at that time exchanges heat with the intake air to a high temperature. As described above, the high-temperature air is guided by the rear guider 8 by the air flow generated by the indoor fan 6, and is mainly blown out from the lower blowing region BA to the room to be air-conditioned.

Reference numerals 3 to 4 in FIG. 7 indicate a state in which the pressure is suddenly dropped to a predetermined pressure by the pressure regulator 12 inside the indoor unit 1. In reference numeral 4 → reference numeral 5, the second heat exchange region Y functions as the second condenser, and the heat of condensation forms medium-temperature air. The medium temperature air is mainly blown out from the upper blowing region FA into the room to be air-conditioned by the air flow generated by the indoor fan 6.

Reference numeral 5 → reference numeral 6 in FIG. 7 is a function of the decompressor 15, and reference numeral 6 → reference numeral 1 is a function of the outdoor heat exchanger 16 as an evaporator.

8, with respect to percentage for all of the heat exchange area in the heat exchanger 5 and the second heat exchange zone Y, the invention and the change in heating capacity, blowing a change in the difference in temperature (during two temperature operation mode)'s Is the result obtained by the experiment. The ratio of the heat exchange area at this time was calculated based on the heat exchange area. As shown in FIG. 8, when the second heat exchange region Y, which is the heat exchange region to the medium temperature, is 50%, the temperature difference between the medium temperature from the upper blowout region FA and the high temperature from the lower blowout region BA. Was about 10 ° C. Further, the heating capacity was about 75% when the second heat exchange region Y was 50% as compared with the case where all the heat exchange regions were the first heat exchange region X. In the air conditioner of the present invention, the heating capacity and the temperature difference required in the two-temperature operation mode are set in consideration of the purpose of use of the air conditioner, and the second heat exchange region for all the heat exchange regions is set. An appropriate ratio of Y is determined. In the first embodiment, for example, the heating capacity required in the two-temperature operation mode is 80% or more, and the temperature difference between the high temperature and the medium temperature at which heat is exchanged is 6 ° C. or more, and all the heat is generated. The ratio of the second heat exchange region Y to the exchange region was set to about 30%. It should be noted that these numerical values are examples and are determined according to the specifications of the air conditioner designed in consideration of the air conditioning target and the like.

9, during the heating operation of the air conditioner of the first embodiment, in the first heat exchange area X of the heat exchanger 5 exchanges heat high temperature, the heat exchange medium temperature in the second heat exchange zone Y It is a contour figure when. FIG. 9 is a black-and-white drawing of the color drawing, but in FIG. 9, it is shown in black that heat is exchanged to a high temperature in the first heat exchange region X provided above the indoor fan 6. It is shown in gray that the heat is exchanged to a medium temperature in the second heat exchange region Y provided on the front side of the indoor fan 6. In the contour diagram shown in FIG. 9, the region indicated by reference numeral 100 of the same color is the region of 35 to 36 ° C., the region indicated by reference numeral 101 is the region of 34 to 35 ° C., and the region indicated by reference numeral 102 is the region of 32 to 33 ° C. It is a region, the region indicated by reference numeral 103 is a region of 30 to 31 ° C., and the region indicated by reference numeral 104 is a region of 27 to 28 ° C.

As shown in FIG. 9, the air that has been heat-exchanged to a high temperature in the first heat exchange region X passes through the ventilation passage 7 and reaches the outlet 2b by the air flow formed by the indoor fan 6 composed of the cross flow fan. Be sent in. At this time, it is understood that the air that has been heat-exchanged to a high temperature, for example, the high-temperature air indicated by reference numeral 100, mainly flows along the rear guider 8 which is the rear guide portion and is sent to the outlet 2b. can. Therefore, most of the high-temperature air from the first heat exchange region X is guided by the rear guider 8 and is a lower blowout region between the middle blade plate 32 and the lower blade plate 33, which are separators for the vertical wind direction louver 30. Guided by the BA, the air is blown into the room from the area on the back side of the outlet 2b, which is the wall side.

On the other hand, the medium temperature air from the second heat exchange region Y passes through the ventilation passage 7 by the air flow formed by the indoor fan 6, and is sent to the outlet 2b. For example, the medium temperature air indicated by reference numeral 104 is Mainly, it is guided by a stabilizer 9 which is a front side guide portion provided on the front side from the blowing position of the indoor fan 6, and is between the upper blade plate 31 of the vertical wind direction louver 30 and the middle blade plate 32 which is a separator. It is guided to the upper blowout region FA of. As described above, the medium temperature air is mainly guided by the stabilizer 9 and blown into the room from the region away from the wall at the outlet 2b, that is, the region on the front side of the outlet 2b.

As described above, in the air conditioner of the first embodiment, as shown in FIG. 9, the air heat-exchanged to a high temperature mainly flows along the rear guider 8 on the back side, and is the middle stage which is a separator. It is blown into the room from the lower blowout region BA between the blade plate 32 and the lower blade plate 33. On the other hand, the air heat-exchanged to the medium temperature mainly flows along the stabilizer 9 on the front side and is blown into the room from the upper blowing region FA between the middle blade plate 32 and the upper blade plate 31 which are separators. NS. As described above, in the air conditioner of the first embodiment, the medium temperature air is blown out from the upper blowing region FA and the high temperature air is blown out from the lower blowing region BA in the two-temperature operation mode during the heating operation. The medium temperature air is blown out so as to hold down the high temperature air from above. As a result, it is suppressed that the high temperature air rises immediately after being blown into the room, and the high temperature air can be sent to the air-conditioned area in the room.

[Separator function]
In the configuration of the air conditioner of the first embodiment, the outlet 2b is provided with a three-stage vertical wind direction louver 30, and the middle stage blade plate 32 of the vertical wind direction louver 30 has two temperatures (high) at the outlet 2b. It has a function as a separator for blowing (temperature + medium temperature).

FIG. 10 is a diagram for explaining the conditions for defining the position of the middle stage blade plate 32 as the separator at the outlet 2b in the cross-sectional view shown in FIG. In FIG. 10, α1 and β1 are at angles centered on the center of rotation of the indoor fan 6 in order to show the ratio of the regions of the second heat exchange region Y and the first heat exchange region X in the heat exchanger 5. It is shown in. α1 is an angle indicating the extent of the second heat exchange region Y centered on the rotation center of the indoor fan 6. β1 is an angle indicating the extent of the first heat exchange region X centered on the rotation center of the indoor fan 6. In the second heat exchange region Y, α1 is a line connecting the position of the end end (lower front end) of the indoor fan 6 with respect to the rotation center of the indoor fan 6 and the rotation center position of the indoor fan 6. It is an angle between the center point of the boundary between the first heat exchange region X and the second heat exchange region Y and the line connecting the rotation center of the indoor fan 6. β1 is a line connecting the position of the most end portion (rear side end portion) of the indoor fan 6 with respect to the rotation center of the indoor fan 6 and the rotation center position of the indoor fan 6 in the first heat exchange region X, and the first heat. It is an angle between the center point of the boundary between the exchange region X and the second heat exchange region Y and the line connecting the rotation center of the indoor fan 6.

In FIG. 10, α2 and β2 indicate the position ratio of the separator at the outlet 2b by the angle of spread in the vertical direction in order to define the position of the middle blade plate 32 as the separator in the vertical wind direction louver 30. α2 indicates the upper blowout region FA (first blowout port) between the upper blade plate 31 and the middle blade plate 32 at an angle of expansion in the vertical direction, and β2 indicates the middle blade plate 32 and the lower blade plate 32. The lower blowout region BA (second blowout port) between 33 and 33 is shown by the angle of spread in the vertical direction. To define α2 and β2, as shown in FIG. 10, a tangent line at the most downstream point (blowing point) in the rear guider 8 and the most downstream point (blowing point) in the stabilizer 9 arranged to face the rear guider 8. ), Α2 and β2 are defined by the angle indicating the vertical spread with the intersection with the tangent as the center point. In addition, α2 is an angle indicating the vertical spread between the tangent line at the most downstream point (blowing point) of the stabilizer 9 and the line connecting the most upstream point and the center point of the middle stage blade plate 32 which is a separator. Is. Further, β2 is an angle indicating the vertical spread between the tangent line at the most downstream point (blowing point) of the rear guider 8 and the line connecting the most upstream point of the middle stage blade plate 32 and the center point.

As described above, the ratio of the region between the first heat exchange region X and the second heat exchange region Y is defined by α1 and β1, and the position of the middle blade plate 32 as a separator with respect to the outlet 2b is defined by α2 and β2. By defining the middle stage blade plate 32 so as to satisfy the following conditions, it is possible to make the blowout temperature state different during the air conditioning operation.

For example, by providing the middle stage blade plate 32 as a separator so as to satisfy the condition (condition 1) of α2 / (α2 + β2)> α1 / (α1 + β1), the middle stage blade plate 32 at the outlet 2b is provided during the heating operation. High temperature air is surely blown out from the lower blowout region BA (second outlet) between the upper blade plate 33 and the lower blade plate 33, and the upper blowout region FA (upper blowout region FA) between the upper blade plate 31 and the middle blade plate 32. Medium temperature air is blown out from the first outlet). At this time, the high temperature air blown out from the lower blowout region BA of the blowout port 2b has a large temperature difference from the medium temperature air blown out from the upper blowout region FA. That is, satisfying the condition 1 of α2 / (α2 + β2)> α1 / (α1 + β1) means that the arrangement position of the middle blade plate 32 as a separator is closer to the back side of the outlet 2b, and the lower part of the outlet 2b. This includes that the side outlet region BA (second outlet) is narrower than the upper outlet region FA (first outlet). In this case, the condition 1 may be satisfied by configuring the heat exchanger 5 to change the ratio of the region between the first heat exchange region X and the second heat exchange region Y. FIG. 11 is a vertical cross-sectional view showing an example configured to satisfy the condition 1 of α2 / (α2 + β2)> α1 / (α1 + β1) during the heating operation of the air conditioner of the first embodiment.

On the contrary, by providing the middle stage blade plate 32 as a separator so as to satisfy the condition (condition 2) of α2 / (α2 + β2) ≦ α1 / (α1 + β1), the upper stage at the outlet 2b during the heating operation. A relatively small amount of medium temperature air is blown out from the upper blowout region FA (first blowout port) between the blade plate 31 and the middle stage blade plate 32, and the lower part between the middle stage blade plate 32 and the lower stage blade plate 33. A relatively large amount of high-temperature air is blown out from the side blowout region BA (second blowout port). At this time, the high temperature air blown out from the lower blowout region BA (second blowout port) of the blowout port 2b has a temperature difference from the medium temperature air blown out from the upper blowout area FA (first blowout port). It becomes smaller. That is, satisfying the condition 2 of α2 / (α2 + β2) ≦ α1 / (α1 + β1) means that the arrangement position of the middle blade plate 32 as a separator is closer to the front side of the outlet 2b, and the upper side of the outlet 2b. This includes that the outlet area FA (first outlet) is narrower than the lower outlet area BA (second outlet). In this case, the condition 2 may be satisfied by configuring the heat exchanger 5 to change the ratio of the region between the first heat exchange region X and the second heat exchange region Y. Therefore, in the case of the configuration of condition 2, a large amount of high temperature air is blown from the lower outlet region BA (second outlet), but as compared with the case of the configuration of condition 1, the lower outlet region BA The high temperature air from the (second outlet) has a low temperature. FIG. 12 is a vertical cross-sectional view showing an example configured to satisfy the condition 2 of α2 / (α2 + β2) ≦ α1 / (α1 + β1) during the heating operation of the air conditioner of the first embodiment.

In FIG. 10, α1 and β1 are centered on the center of rotation of the indoor fan 6 in order to show the ratio of the regions of the first heat exchange region X and the second heat exchange region Y in the heat exchanger 5. In order to define the position of the middle blade plate 32 as the separator in the vertical wind direction louver 30 by showing α2 and β2, the position ratio of the separator in the outlet 2b is shown by the angle and described. the present invention is not limited to the above provisions, may define the α1 and β1 and the area ratio of the heat exchange in the heat exchanger, the flow path ratio of the heat exchanger. Further, in α2 and β2, it may be defined by the division ratio of the position as the separator in the outlet 2b.

For example, α1 indicates the heat exchange area or the heat exchange flow path ratio in the second heat exchange region Y, and β1 indicates the heat exchange area or the heat exchange flow path ratio in the first heat exchange region X. Prescribe. At this time, α2 and β2 are α2 as angles indicating the spread in the vertical direction about the intersection of the tangent line of the most downstream point of the outlet 2b in the rear guider 8 and the tangent line of the most downstream point of the outlet in the stabilizer 9 as the center point. Is an angle indicating the vertical spread of the first outlet (front side blowout region FA) formed between the upper blade plate 31 and the middle blade plate 32, and β2 is defined as the middle blade plate 32 and the lower blade plate 32. It may be defined as an angle indicating the vertical spread of the second outlet (back surface side outlet region RA) formed between the 33 and the 33. Further, α2 and β2 are the upper / lower blades 31 of the middle blade 32 as a separator at the outlet 2b in a state where the blowout direction planes of the three-stage blades of the vertical wind direction louver 30 are arranged in parallel. It may be specified by the ratio of the facing distance to 33.

[Blow-off control by wind direction louver assembly]
Next, in the air conditioner of the first embodiment, the blowing control using the wind direction louver assembly 3 provided at the blowing port 2b will be described. As described above, the vertical wind direction louver 30 of the wind direction louver assembly 3 has a three-stage configuration of upper, middle, and lower parts of the upper blade plate 31, the middle stage blade plate 32, and the lower stage blade plate 33. Further, the middle stage blade plate 32 having a function as a separator is divided into two at the center in the left-right direction thereof, and has the middle stage left blade plate 32a and the middle stage right blade plate 32b. Each blade plate in the vertical wind direction louver 30 is driven by a drive motor, for example, a stepping motor, which is connected to either the left or right end of each rotation center axis. Therefore, the upper blade plate 31 and the lower blade plate 33, and the middle stage left blade 32a and the middle stage right blade 32b in the middle stage blade plate 32 rotate independently in the vertical direction to control the wind direction from the outlet 2b. It can be in the desired vertical direction.

Further, the left and right wind direction louvers 40 include the upper left and right blades 40a arranged in the upper blowout region FA (first blowout port) formed between the upper blade plate 31 and the middle blade plate 32, and the middle blade plate 32. It is a two-stage upper and lower configuration having lower left and right blades 40b arranged in a lower outlet region BA (second outlet) formed between the lower blade plate 33 and the lower blade plate 33. In the upper left and right blades 40a, a plurality of left and right wind direction changing blades having substantially the same shape are arranged side by side in the left and right direction. The upper left and right blades 40a are divided into two groups, a blade group in the left region and a blade group in the right region, with the center as a boundary. Similarly, in the lower left and right blades 40b, a plurality of left and right wind direction changing blades having substantially the same shape are arranged side by side in the left and right direction. Further, the lower left and right blades 40b are divided into two groups, a left and right blade group in the left region and a left and right blade group in the right region, with the center as a boundary.

The upper left and right blades 40a arranged in the upper blowout region FA (first blowout port) are divided into two upper left blades 41a, which are left and right blade groups in the left region, and upper right blades 41b, which are left and right blade groups in the right region. It is divided. The left and right wind direction changing blades of the upper left blade 41a and the upper right blade 41b are connected to different connecting rails so as to be interlocked with each other. Therefore, the upper left blade 41a and the upper right blade 41b have a configuration in which the left and right blade groups in the respective regions are independently rotated in the left-right direction, and the air blowing direction from the upper outlet 2b can be specified separately for the left and right. Is.

The lower left and right blades 40b arranged in the lower outlet region BA (second outlet) are the lower left blade 42a, which is a group of left and right blades in the left region, and the lower right blade, which is a group of left and right blades in the right region. It is divided into two parts, 42b and 42b. The left and right wind direction changing blades of the lower left blade 42a and the lower right blade 42b are connected to different connecting rails so as to be interlocked with each other. Therefore, in the lower left blade 42a and the lower right blade 42b, the left and right blade groups in the respective regions rotate independently in the left-right direction, and the air blowing directions from the lower outlet 2b are separately left and right. It is a configuration that can be specified.

Each of these connecting rails is connected to the rotation shaft of a separate drive motor for the left and right wind direction louvers, for example, a stepping motor, and the rotation of these drive motors causes the left and right wind direction changing blades in the left and right blade groups to move in the left and right directions. It is a configuration that changes direction to.

In the air conditioner shown in FIG. 2, the vertical wind direction louver 30 shows a certain state during the heating operation, and the upper blade plate 31, the middle stage blade plate 32, and the lower stage blade plate 33 rotate diagonally forward and downward. It is arranged. However, the directions of the middle-stage left blade plate 32a and the middle-stage right blade plate 32b, which are divided into two on the left and right, are different from each other. The upper blowout left region between the upper blade plate 31 and the middle left blade plate 32a is formed narrower than the upper blowout right region between the upper blade plate 31 and the middle right blade plate 32b, and is formed narrower than the upper blowout right region between the upper blade plate 31 and the middle right blade plate 32b. The plate 32a faces upward as compared with the middle right blade plate 32b. By arranging the middle-stage left blade plate 32a and the middle-stage right blade plate 32b in this way, the air blowing direction from the upper blowing left region becomes higher than the air blowing direction from the upper blowing right region. As the upper blowout left region is narrower than the upper blowout right region, the wind speed increases and the reachable distance becomes longer.

Further, in the air conditioner shown in FIG. 2, both the upper left and right blades 40a and the lower left and right blades 40b of the left and right wind direction louvers 40 are blown to the left and right. That is, the upper left blade 41a of the upper left and right blades 40a is arranged so as to blow out to the left side toward the air conditioner, and the upper right blade 41b is arranged so as to blow out to the right side toward the air conditioner. ing. Therefore, in the upper outlet region FA (first outlet), the air from the upper outlet left region is blown to the left side of the room, and the air from the upper outlet right region is blown to the right side of the room.

Further, the lower left blade 42a of the lower left and right blades 40b is arranged so as to blow out to the left side toward the air conditioner, and the lower right blade 42b blows out to the right side toward the air conditioner. It is located in. Therefore, in the lower outlet region BA (second outlet), the air from the lower outlet left region is blown to the left side, and the air from the lower outlet right space region is blown to the right side.

As a result, in the air conditioner shown in FIG. 2 described above, during the heating operation, the high temperature air from the lower blowout right region is relatively relative to the indoor region on the right side when facing the air conditioner. It is blown out strongly, and the medium temperature air from the upper blowout left region is blown out relatively strongly toward the air conditioner with respect to the indoor region on the left side.

13 and 14 are perspective views showing an example of specific rotation positions of the vertical wind direction louver 30 and the left and right wind direction louver 40 in the wind direction louver assembly 3 executed in the air conditioner of the first embodiment. 13 and 14 are views of the front side of the indoor unit 1 in which the air conditioner outlet 2b and the like appear, as viewed from below.

In the air conditioner shown in FIG. 13, the upper blade plate 31 of the vertical wind direction louver 30, the middle blade plate 32, and the lower blade plate 33 are arranged substantially in parallel so that the three stage blade plates face in substantially the same direction. .. As shown in FIG. 13, the middle-stage left blade plate 32a and the middle-stage right blade plate 32b, which are divided into two parts on the left and right, constituting the middle-stage blade plate 32 as a separator have the same orientation and are similar to a single-plate blade plate. It is formed. The upper left and right blades 40a of the left and right wind direction louvers 40 shown in FIG. 13 are arranged so as to blow out the air from the upper blowing region FA to the right side of the room on both sides. Further, the lower left and right blades 40b are arranged on both sides so as to blow out the air from the lower blowing region BA to the left side of the room.

In the air conditioner shown in FIG. 14, the upper blade plate 31, the middle stage blade plate 32, and the lower stage blade plate 33 of the vertical wind direction louver 30 are arranged substantially in parallel so as to face substantially the same direction as in FIG. .. As shown in FIG. 2 above, the left and right wind direction louvers 40 in FIG. 14 are arranged so that both the upper left and right blades 40a and the lower left and right blades 40b are blown to the left and right.

As described above, the air conditioner of the first embodiment is composed of the upper, middle and lower three-stage vertical wind direction louvers 30 provided at the outlet 2b, and the upper and lower two-stage left and right wind direction louvers 40. The wind direction louver assembly 3 makes it possible to separate medium-temperature air and high-temperature air in a desired direction from the upper outlet region FA, which is the first outlet, and the lower outlet region BA, which is the second outlet. It becomes. Further, since the upper and lower parts of the left and right wind direction louvers 40 are divided into two parts and blown to the left and right, the outlet 2b in the air conditioner of the first embodiment is divided into four parts in the upper, lower, left and right sides. It becomes an area, and each area can have a different blowing direction. Therefore, in the configuration of the air conditioner of the first embodiment, it is possible to air-condition the air-conditioning target region in the room so as to have a desired temperature region.

[Mini feather]
As shown in FIGS. 13 and 14, mini blades 20 are formed on the middle stage left blade plate 32a and the middle stage right blade plate 32b constituting the middle stage blade plate 32 which is a separator. The mini blade 20 is formed on the upstream side of the upper surface side of the middle stage left blade plate 32a and the middle stage right blade plate 32b. The mini blades 20 are arranged in parallel with the upper surfaces of the middle left blade plate 32a and the middle right blade plate 32b with a predetermined gap. The mini blade 20 is made of a thin and elongated plate material, and is held by a plurality of support portions 20a projecting from the upper surfaces of the middle left blade plate 32a and the middle right blade plate 32b. The support portion 20a for holding the mini blade 20 is composed of a short thin plate so that a smooth air flow is formed in the gap between the upper surface of each of the middle left blade plate 32a and the middle right blade plate 32b and the mini blade 20. ing.

FIG. 15 is a diagram illustrating the effect of the mini blades 20 in the wind direction louver assembly 3 in the air conditioner of the first embodiment. FIG. 15 is a cross-sectional view showing the vicinity of the mini blade 20 formed on the upper surface of the middle blade plate 32 at the outlet 2b. In FIG. 15, FIG. 15A is a diagram showing an air flow from the outlet 2b when the middle stage blade plate 320 is not provided with the mini blades, and FIG. 15B is a diagram showing the air flow from the outlet 2b when the middle stage blade plate 320 is provided with the mini blades 20. It is a figure which shows the air flow of the outlet 2b in the case where it is done.

As shown in FIGS. 15A and 15B, the air from the ventilation passage 7 has an upper blowout region FA formed between the upper blade plate 31 and the middle blade plate 32/320, and the middle blade plate. The configuration is such that the lower blowout region BA formed between the 32/320 and the lower blade plate 33 is divided and blown out from the blowout port 2b. However, as shown in FIG. 15A, when the middle stage blade plate 320 is not provided with the mini blades, the air from the ventilation passage 7 is further downwardly directed by the respective blade plates, for example, during the heating operation. At this time, the air from the ventilation passage 7 hits the upstream end of the middle blade plate 320 and then separates without following the surface of the blade plate, and a turbulent flow is generated on the upper surface side of the middle blade plate 320 due to a vortex or the like. In this way, due to turbulence such as vortices generated in the upper blowout region FA between the upper blade plate 31 and the middle blade plate 320, from the lower blowout region BA between the middle blade plate 320 and the lower blade plate 33. In some cases, the air from the upper blowing region FA and the air from the lower blowing region BA may be mixed due to the influence on the air. As a result, it may not be possible to separate the medium temperature air from the upper blowing region FA and the high temperature air from the lower blowing region BA. In order to solve such a problem, in the air conditioner of the first embodiment, the mini blade 20 is provided on the middle blade plate 32.

As shown in FIG. 15B, when the mini blades 20 are provided on the middle stage blade plate 32, the air from the ventilation passage 7 is further directed downward by the respective blade plates, for example, during the heating operation. At this time, the air from the ventilation passage 7 is guided by the vertical wind direction louver 30 and blown downward from the upper blowout region FA (first blowout port) and the lower blowout region BA (second blowout port). At this time, the air from the ventilation passage 7 does not peel off along the surface of the blade plate due to the mini blade 20 provided at the upstream end of the middle stage blade plate 32, and is on the upper surface side of the middle stage blade plate 32. The generation of vortices and the like is suppressed, and the air that is smoothly blown out on the upper surface side of the middle blade plate 32 flows. As a result, the medium-temperature air from the upper outlet region FA (first outlet) and the high-temperature air from the lower outlet region BA (second outlet) can be reliably separated. .. In the above description, the rectifying effect of the mini blades 20 when the air from the ventilation passage 7 is directed downward by the middle stage blade plate 32 as in the heating operation has been described, but the middle stage blade plate 32 rotates. It was also confirmed that the mini blade 20 exhibited a rectifying effect in the upper blowout region FA (first blowout port) at other positions as well.

[Cold feeling detection control]
In the air conditioner of the first embodiment, various information from the motion sensor 10, the temperature / cooling sensor 11, the floor temperature sensor, the solar radiation sensor, the temperature sensor that detects the temperature of each part of the heat exchanger 5, and the like are used. Based on this, the air conditioner is driven and controlled.

For example, the human sensor 10 and the hot / cold sensor 11 are configured to detect the presence of a person, the movement of a person, thermal image information, and the like based on infrared rays from an air-conditioned region in a room. The hot / cold feeling is detected by the thermal image information acquired by the thermopile sensor which is the hot / cold feeling sensor 11 in the air conditioner of the first embodiment.

The air conditioner of the first embodiment has a configuration in which the "warm / cold feeling" of a person in the air-conditioned area is detected based on the thermal image information from the hot / cold feeling sensor 11, but the "hot" that the person feels, Generally, the PMV scale (Predicted Mean Vote) is often used as an index of "warm / cold feeling" indicating "cold". In the PMV scale, it is a 7-grade evaluation scale of "+3 (Hot: hot)" to "-3 (Cold: cold)". In the first embodiment, the 9-step hot / cold feeling scale proposed by the Hot / Cold Feeling Subcommittee of the Air Conditioning and Sanitary Engineering Society is used as the hot / cold feeling scale. The 9-point scale is the two poles of the PMV scale plus "+4 (very hot)" and "-4 (very cold)". Using this hot / cold feeling scale, the hot / cold feeling detection control described later is performed.

In the following description of the first embodiment, the "warm / cool sensation" indicates a numerical value within the range of "-4" to "+4" on the warm / cool sensation scale. Similarly, in terms related to "warm / cold feeling" such as "average hot / cold feeling", "standard hot / cold feeling", and "detection hot / cold feeling", which will be described later, each of them has a warm / cold feeling scale of "-4". It indicates a numerical value within the range of "+4".

In the heating / cooling sensation detection control of the air conditioner according to the first embodiment, the “warm / cold sensation” that a general person normally feels with respect to the set temperature of the air conditioner is defined as the “standard temperature sensation”. , The air conditioning is controlled with the "standard hot / cold feeling" as the "target hot / cold feeling". In the hot / cold feeling detection control of the first embodiment, the temperature shift control and the blowing control are performed so that the difference from the “standard hot / cold feeling” is within “± 0.5” in the target hot / cold feeling zone. ing. The temperature shift control and the separate blowing control will be described later. In addition, there is an experimental result that 80% of people do not feel dissatisfied with PPD (Predicted Percentage of Dissatisfied) if it is within the warm / cold feeling scale "± 1", and it is carried out based on this experimental result. In the heating / cooling sensation detection control of Form 1, the difference from the “target heating / cooling sensation” of the heating / cooling sensation scale is within “± 0.5”.

In a room subject to air conditioning, when the person is at rest and the amount of activity of the person is small, and when the air conditioning operation is sufficiently stable, the difference between the surface temperature (tcl) and the wall surface temperature (tr) of the person (tr) ( If tcl-tr) is known, it is possible to estimate the heat dissipation amount (H) of the person.

If the heat dissipation amount (H) of a person and the metabolic amount (heat production amount M) of the person are balanced (H = M), the heat balance of the person is balanced and the person feels comfortable. Can be estimated. On the other hand, if the amount of heat released (H) is larger than the amount of metabolism (the amount of heat produced M) (H> M), the person feels cold depending on the degree of the amount of heat released, and conversely, the amount of heat released (H) is the amount of metabolism. If it is smaller (H <M), it can be estimated that the person feels hot.

Therefore, when the person is at rest and the amount of activity of the person is small, the surface temperature of the person and the ambient wall surface temperature are calculated from the ambient air temperature and the thermal image information obtained from the thermopile sensor which is the thermal sensation sensor 11. By extracting and detecting the heat dissipation amount (H) of the person, it is possible to detect the "warm / cold feeling" of the person in a non-contact manner.

In the air conditioner of the first embodiment, the heat radiation amount of a person is estimated in a non-contact manner when the activity amount of the person is small or when the person is in a resting state, and the person's "heat radiation amount" is estimated based on the estimated heat radiation amount. Air conditioning is controlled by detecting "warm and cold feeling". However, it is difficult to identify the area where a person exists (the area where a person exists) in the air-conditioned area (living space) only by the thermal image information obtained from the thermal sensation sensor 11, and the amount of activity of the person is small. It is difficult to detect whether the person is in a resting state.

Therefore, in the hot / cold sensation detection control based on the hot / cold sensation detection in the air conditioner of the first embodiment, the human sensation is combined with the temperature distribution information from the thermal image information obtained from the thermopile sensor which is the hot / cold sensation sensor 11. Using the human body detection information from the plurality of infrared sensors of the sensor 10 and the temperature information from other sensors regarding the air-conditioned area, the position of the person in the air-conditioned area, the activity state of the person, and the "feeling of warmth and coldness" of the person. It has a configuration to detect.

In the air conditioner of the first embodiment, the thermal image information from the hot / cold sensation sensor 11, the human body detection information from the human sensation sensor 10, and the temperature information from the temperature sensor (room temperature sensor, floor temperature sensor, etc.) Although it is assumed that the hot / cold sensation detection control is performed using (room temperature information), the air conditioner of the present invention acquires the room temperature information from the thermal image information of the hot / cold sensation sensor 11 and obtains the hot / cold sensation sensor 11. The air conditioning control according to the first embodiment is configured by using the thermal image information from 11 and the human body detection information from the human sensor 10.

In the first embodiment, a case where the person is at rest and the amount of activity of the person is small, that is, a case where the amount of metabolism (heat production M) can be regarded as a substantially constant value will be described, but the amount of activity is above a certain level. If it is large, the metabolic amount (heat production amount M) according to the activity amount is calculated, and the calculated metabolic amount (heat production amount M) is compared with the heat dissipation amount H of the person. It may be configured to detect the "warm / cold feeling" of whether the person feels hot or cold.

As shown in FIG. 2 described above, in the motion sensor 10 according to the first embodiment, three infrared sensors are arranged side by side in the horizontal direction on the left end side of the front surface of the indoor unit 1. The motion sensor 10 is a pyroelectric infrared sensor that detects the presence or absence of a person by detecting, for example, infrared rays radiated from the human body. In the air conditioner of the first embodiment, a pulse signal is output according to a change in the amount of infrared rays detected by each infrared sensor of the motion sensor 10, and the control unit determines the presence or absence of a person based on the pulse signal. doing.

In the air conditioner of the first embodiment, it is determined based on the signal output from the motion sensor 10 whether the person in the air-conditioned area is in a resting state in which the person hardly moves or in an active state in which the person is active. .. Specifically, the control unit 50 determines the magnitude or resting state of the amount of human activity according to the signal output from the motion sensor 10 within a predetermined detection time (for example, 2 minutes).

Further, in the air conditioner of the first embodiment, the human body position determination region in the air conditioning target region is divided into a plurality of detection regions based on the signals output from the three infrared sensors in the motion sensor 10. In the air conditioner, each of the three infrared sensors in the motion sensor 6 is configured so that the detectable areas overlap, and a plurality of detection areas in the air conditioning target area based on the signals from the respective infrared sensors. It is a configuration that detects the presence or absence of a person in.

When it is determined that the amount of activity of a person is "small" or "resting state", the "warm / cold feeling" of the person in each detection area is determined, and the detection process of the entire human body position determination area is completed. do.

[Air conditioning control by detecting warmth and coldness]
As described above, every time the "warm / cold feeling" of all the areas (all human body position determination areas) in the air conditioning target area is determined, the air conditioning control by the hot / cold feeling detection described below is executed. It should be noted that the air-conditioning control based on the hot / cold feeling detection shows that after the air conditioner started the air-conditioning operation, the temperature in the room to be air-conditioned became a stable state satisfying a certain condition with respect to the set condition. It is executed after detecting by the temperature information from the temperature sensor. When the air conditioner starts the air conditioning operation, it is in the normal operation mode, the heat exchanger 5 of the indoor unit 1 is in a state where the pressure regulator 12 does not adjust the pressure, and the first heat exchange region X and The second heat exchange region Y performs one merged heat exchange operation, and substantially performs a one-temperature heat exchange operation (one-temperature operation mode).

FIG. 16 is a flowchart showing a filtering process (exclusion determination process) of the heating / cooling sensation detection control executed in the air conditioner of the first embodiment. The filtering process is a process performed based on the thermal image information from the hot / cold sensation sensor 11, and is an exclusion determination process performed for each person information in the room to be air-conditioned.

In step 101 of FIG. 16, the “heating / cooling sensation sensor start determination” is performed, and it is determined whether or not the room temperature of the air-conditioned object has reached a predetermined temperature, for example, a set temperature at that time. The “warm / cool sensation sensor start determination” in step 101 is one of the filtering processes in which the warm / cool sensation detection control is not performed until the room temperature reaches a predetermined temperature. In the first embodiment, the set temperature at that time in the air conditioner is set to a predetermined temperature as a threshold value in the "warm / cool feeling sensor start determination". When the room temperature has reached a predetermined temperature, the filtering process for each person information is started (step 102).

In step 103, "determination of exclusion of abnormal temperature sensation" is performed. The “warm / cold sensation” of the person's warm / cool sensation scale in the first embodiment is an index within the range of “± 4”. However, since the control unit 50 simply calculates the "warm / cold feeling" of the room to be air-conditioned based on the thermal image information from the hot / cold feeling sensor 11, it can be a human "warm / cold feeling". May calculate no value. That is, when the control unit 50 calculates a value exceeding "+4" or a value less than "-4" as the "warm / cold feeling", it is determined that the value is irregular data (unnecessary data). And exclude the calculation result. In step 103, it is determined whether or not the detected "warm / cool feeling" of the hot / cold feeling scale is within the range of normal values of "-4" or more and "+4" or less.

In step 104, "person detection accuracy exclusion determination" is performed. From the two-dimensional thermal image information from the thermal sensation sensor 11, the control unit 50 extracts the human region temperature based on the difference between the reference background temperature and the human region temperature, and extracts the human region temperature in the room to be air-conditioned. The "warm and cold feeling" of is calculated. Therefore, when the number of samplings of the background temperature is small, such as immediately after the start of measurement of the hot / cold feeling sensor 11, the detection accuracy of the “warm / cold feeling” is lowered. Therefore, in the air conditioning control by detecting the feeling of warmth and cold in the first embodiment, the information is excluded when the number of samplings is small. In step 104, it is determined whether or not the number of samplings is equal to or greater than a predetermined number in order to exclude the case where the number of samplings of the background temperature is small.

In step 105, the “presence of excluding the motion sensor detection range” is performed. The hot / cold feeling detection control is linked with the human position determination result based on the human body detection information from the human sensor 10. Therefore, in the region where no person exists in the human position determination result by the motion sensor 10, the information indicating the "warm / cold feeling" calculated from the thermal image information is adopted as the information for performing the air conditioning control by the hot / cold feeling detection. Can not do it. Therefore, the calculation result showing such "warm / cold feeling" is excluded. In step 105, when a "warm / cold feeling" is detected in a region where no person exists in the result of determining the position of the person by the motion sensor 10, that information is excluded.

In step 106, the “heating / cooling sensation sensor detection range exclusion determination” is performed. Since the warm / cool sensation sensor 11 is a thermopile sensor, it is not possible to accurately detect the “warm / cool sensation” at a position separated by a certain distance or more. Therefore, for example, when the floor distance to the person who calculates the "warm / cold feeling" exceeds a predetermined distance, the "warm / cold feeling" is considered to be inaccurate, and the calculation result in such a case is excluded. Further, when the person positions are too close, the area occupied by the person in the thermal image information becomes extremely large, and accurate "warm / cold feeling" cannot be detected. Therefore, when the angle formed by the line segment connecting the detection unit and the foot position (floor surface) of the human body with respect to the horizontal plane of the position of the detection unit of the motion sensor 10 exceeds a predetermined angle, a thermal image is obtained. Assuming that the area occupied by people in the information is large and accurate "warm / cold feeling" cannot be detected, the calculation result in such a case is excluded. In step 106, for example, the floor distance to the person who calculates the "warm / cold feeling" is within a predetermined distance, and the detection unit and the human body have a horizontal plane at the position of the detection unit of the motion sensor 10. It is determined whether the angle formed by the line segment connecting the foot position (floor surface) is within a predetermined angle.

In step 107, "area distribution of human information" is performed. In the previous steps 103 to 106 filtering process (exclusion determination process), the filtered person information (information on the "warm / cold feeling" of the person) is distributed to a plurality of human body position determination areas in the room to be air-conditioned. , It is converted into a "warm / cold feeling" for each human body position determination area. When a plurality of person information exists in the same area, the average value of the "warm / cold feeling" in that area is defined as the "warm / cold feeling (average warm / cold feeling)" in that area.

The person information (information on the "warm / cold feeling" of the person) that did not correspond in steps 103 to 106 is discarded. In step 109, it is confirmed that the filtering process for the detected human information is completed, and the process proceeds to the next filtering process for each human body position determination area (step 110).

In step 111, the "person position exclusion determination" is performed. Since the warm / cool sensation sensor 11 is a thermopile sensor, it may recognize a stationary heat source (for example, a television, a floor stand, etc.) as a person and erroneously detect it. Therefore, in step 111, when the detected "warm / cold feeling" is in the area where no person exists in the human body detection information by comparing with the human body detection information from the human sensor 10 that detects the movement of the person. , The measurement result of the hot / cold feeling sensor 11 at that time is excluded. In step 111, it is determined in the human body detection information whether or not a person exists in the corresponding region of the "warm / cold feeling" detected in the thermal image information by the hot / cold feeling sensor 11, and the person exists in the human body detection information. If a "warm / cold feeling" is detected in a non-existing area, the detection information at that time is discarded.

In step 112, the “block activity exclusion determination” is performed. In the air-conditioning control by detecting the feeling of warmth and coldness in the first embodiment, the index of the feeling of warmth and coldness is set based on the state in which the person is at rest or the amount of activity of the person is "small". For this reason, when a person in the air-conditioned area is performing an activity (activity amount> small) above a certain level, the person is controlled by detecting the person's "warm / cold feeling" based on the thermal image information from the warm / cold feeling sensor 11. The control is switched to estimate the amount of human activity (“large”, “medium”, “small” or “resting state”) based on the number of human detection reactions based on the human body detection information from the sensor 10. Specifically, the presence or absence of a person is determined based on a signal corresponding to a change in the amount of infrared rays detected by each infrared sensor in the motion sensor 10, and each human body is within a predetermined time (for example, 2 minutes) at that time. The amount of human activity (“large”, “medium”, “small”, and “resting state”) is estimated based on the number of human detection reactions in which the presence of a person is detected in the position determination region.

As described above, in step 112, it is determined whether or not the amount of human activity is less than "medium" based on the human body detection information from the motion sensor 10. That is, it is determined whether or not the amount of activity of a person is "small" or less (including "resting state"). If it is determined in step 112 that the amount of activity of the person is "small" or "resting state", in step 113, the "feeling of warmth and coldness" of the person in each area is determined, and filtering of the entire area is performed. The process is complete (step 115).

The filtering process of the entire region in the heating / cooling sensation detection in steps 101 to 115 is performed every time the thermal image information is acquired by the heating / cooling sensation sensor 11, and the “heating / cooling sensation” of the entire region is the air. It is always grasped and confirmed with high accuracy in the air conditioner.

FIG. 17 is a flowchart showing air conditioning control based on the feeling of warm / cold detected as described above. In step 201 of FIG. 17, it is determined whether or not the detected "warm and cold feeling" is divided into a plurality of detection regions, that is, whether or not a person exists in the plurality of detection regions. When the detected "warm / cold feeling" exists in a plurality of detection regions, in step 202, whether or not the difference in the "warm / cold feeling" in the plurality of detection regions in which the presence of a person is detected is equal to or greater than a predetermined value. Is judged. If the difference in "warm / cold feeling" in the plurality of detection regions is equal to or greater than a predetermined value, it is determined that blow-off control is necessary, and the pressure regulator 12 is driven so as to enter the two-temperature operation mode (step 203). ). For example, in the heating operation, the first heat exchange region X exchanges heat at a high temperature (for example, 35 to 55 ° C.), and the second heat exchange region Y has a medium temperature (a temperature lower than the high temperature by a predetermined temperature). The pressure regulator 12 is made to perform a depressurizing operation so as to perform the heat exchange of the above. At this time, the temperatures of the first heat exchange region X and the second heat exchange region Y in the heat exchanger 5 are detected by the temperature sensors 18a and 18b (see FIG. 4), input to the control unit 50, and used for air conditioning control. Be done.

In step 204, blowing control (wind direction control) by the vertical wind direction louver 30, the left and right wind direction louvers 40, and the indoor fan 6 with respect to the corresponding detection area according to the difference in the “warm / cold feeling” determined in step 202. And air volume control). That is, the control unit 50 sets the "warm / cool sensation" of each person in the detected relevant region to be the same and / or to have a "standard hot / cold sensation" determined by the set temperature at that time. Control the wind direction and / or air volume. For example, the vertical wind direction louver 30 and the left and right wind direction louvers 40 are rotated so that the difference in "warm and cold feeling" is within a predetermined value (for example, 0.5) with respect to regions having different "warm and cold feelings". Change the blowing ratio.

In the first embodiment, the "standard hot / cold feeling" means the "warm / cold feeling" that a normal person feels when the room temperature is the set temperature. For example, the "standard hot / cold feeling" that a normal person feels when the set temperature is 20 ° C is approximately "-1", and the "standard hot / cold feeling" that a normal person feels when the set temperature is 25 ° C is approximately "-1". It is abbreviated as "+1". Moreover, this "standard hot / cold feeling" may be changed according to the season.

On the other hand, in step 201, when the detected "warm / cold feeling" is not divided into a plurality of regions and a plurality of people are present in one region, the "average" of the regions in which the plurality of people are present is present. The feeling of warmth and coldness is calculated (step 205). The "average warm / cold feeling" is similarly applied to the case where a plurality of "warm / cold feelings" exist in each region in the above-mentioned step 202, and the "average hot / cold feeling" is calculated in each region. ..

In step 206, it is determined whether or not the difference between the calculated "average temperature sensation" and the "standard temperature sensation" determined by the set temperature at that time exceeds a predetermined value, for example, "± 1". Will be done. When the difference between the "average temperature sensation" and the "standard temperature sensation" in the corresponding area is equal to or greater than a predetermined value, the difference between the "average temperature sensation" and the "standard temperature sensation" is "± 0. The air conditioning is controlled by changing the air direction and / or air volume with respect to the air conditioning target area and / or shifting the target temperature (temperature shift control) so as to be within the target warm / cool feeling zone within 5 ”(step 207).

The air-conditioning control in steps 201 to 207 is performed at predetermined time intervals, and the air-conditioning control based on the hot / cold feeling detection according to the amount of human activity is executed. Therefore, when the presence of a person disappears, the air conditioning control by the above-mentioned hot / cold feeling detection may be terminated.

The thermal image information transmitted from the hot / cold sensation sensor 11 in the first embodiment to the control unit includes data such as the number of detected persons, the position, and the “warm / cold sensation”.

[Blow-off control in air conditioners]
In the air conditioner of the first embodiment, as described above, the human presence region in the room to be air-conditioned is based on the human body detection information from the human sensation sensor 10 and the thermal image information from the hot / cold sensation sensor 11. Is identified, and the "warm / cold feeling" of the person is estimated and detected based on the radiation amount of the person in the area where the person exists, and the "standard warm / cold feeling" that a normal person feels "comfortable" at the temperature set by the person. The air conditioning is controlled so as to be.

As described above, the air conditioner of the first embodiment has a vertical wind direction louver 30 composed of a plurality of blade plates for changing the wind direction of the blowout in the vertical direction, and a plurality of blades for changing the wind direction of the blowout in the horizontal direction. It has a left and right wind direction louver 40 composed of plates. Further, the vertical wind direction louver 30 has a three-stage structure of upper, middle and lower parts of the upper blade plate 31, the middle stage blade plate 32 and the lower stage blade plate 33, and the middle stage blade plate 32 is divided into two at the center in the left-right direction thereof. (Middle stage left blade plate 32a, middle stage right blade plate 32b). The left and right wind direction louvers 40 include upper left and right blades 40a arranged in the upper blowout region FA (first blowout port) formed between the upper blade plate 31 and the middle blade plate 32, and the middle blade plate 32 and the lower blade. It is a two-stage upper and lower configuration having lower left and right blades 40b arranged in a lower blowout region BA (second blowout port) formed between the plate 33 and the lower blowout region BA (second blowout port). Further, the upper left and right blades 40a and the lower left and right blades 40b are each divided into left and right two-divided blade groups, and are configured to be blown to the left and right.

As described above, in the air conditioner of the first embodiment, the outlet 2b is divided into two upper and lower outlets, an upper outlet area FA (first outlet) and a lower outlet area BA (second outlet). Furthermore, each upper and lower area is configured to be blown to the left and right. Therefore, the human presence region specified based on the human body detection information from the motion sensor 10 and the thermal image information from the hot / cold sensation sensor 11, and the detected "warm / cold sensation" of the person in the human presence region. Based on the above, the control unit controls the blowing of the wind direction louver assembly 3.

Hereinafter, specific examples [1] to [5] of blowing control of the wind direction louver assembly 3 in the air conditioner of the first embodiment will be described. In the examples [1] to [4] described below, there is a case where one person is present in each of the left and right areas in the room to be air-conditioned during the heating operation, and each person is detected as " It is a blowing control performed based on "warm / cold feeling". Further, the example [5] is a case where one person is present in the room to be air-conditioned during the heating operation, and is a separate control when the amount of activity of the person is high and low.

[1] First, in the air conditioner as the first embodiment, the control unit 50 determines that both people existing in the left and right regions of the room to be air-conditioned feel "comfortable". In this case, the pressure regulator 12 provided in the refrigerant pipeline connecting the first heat exchange region X and the second heat exchange region Y is set to a state in which the pressure is not adjusted, and the heat exchanger 5 is set. It has a function as one heat exchange and becomes a "one temperature operation mode". At this time, air having substantially the same temperature is blown out from the upper blowing region FA and the lower blowing region BA in the wind direction louver assembly 3, and the upper left and right blades 40a and the lower left and right blades 40b each swing left and right. Is continued. Alternatively, the upper left blade 41a and the lower left blade 42a face the left region, and the upper right blade 41b and the lower right blade 42b face the right region so as to blow out toward the left and right regions where a person exists. You may perform the blowing operation in a state where it is distributed and rotated in each direction and fixed at that position.

[2] In the air conditioner as a specific example 2, the control unit 50 is in the case where the difference in "warm / cold feeling" of people existing in the left and right regions of the room to be air-conditioned is "± 1" or more. , When it is determined that the person in the left area feels "cold" and the person in the right area feels "comfortable". In this case, the pressure regulator 12 is set to the reduced pressure state. As a result, the heat exchanger 5 becomes a "two-temperature operation mode" in which heat is exchanged at different temperatures (high temperature and medium temperature) in the first heat exchange region X and the second heat exchange region Y. Therefore, the upper side of the wind direction louver assembly 3 at this time is blown out from the upper blowing region FA to the right side region, and the high temperature air is blown out from the lower blowing region BA to the left side region. The blowing directions of the left and right blades 40a and the lower left and right blades 40b are set. When set in this way, in the experiment of the inventor, the floor temperature difference (temperature of 10 cm above the floor) between the right region and the left region was 3 ° C.

[3] In the air conditioner as the specific example 3, the control unit 50 is in the case where the difference in "warm / cold feeling" of people existing in the left and right regions of the room to be air-conditioned is "± 1" or more. , When it is determined that the person in the left area feels "cold" and the person in the right area feels "slightly warm". In this case, the pressure regulator 12 is set to the depressurized state, and the heat exchanger 5 is in the "two-temperature operation mode". At this time, the blowing direction of the lower left and right blades 40b is set so that high temperature air is blown from the lower blowing region BA in the wind direction louver assembly 3 to the left region. Further, the medium temperature air blown out from the upper blowout region FA is blown out to the left side region by the upper left blade 41a of the upper left and right blades 40a, and blown out to the right side region by the upper right blade 41a. That is, the upper left and right blades 40a in the upper blowing region FA are set to blow left and right. When set in this way, in the inventor's experiment, the floor temperature difference between the right region and the left region was 5 ° C.

[4] In the air conditioner as the specific example 4, the control unit 50 is in the case where the difference in "warm / cold feeling" of a person in the left and right regions of the room to be air-conditioned is "± 1" or more, and the left side. This is the case when it is determined that the person in the area of 1 feels "cold" and the person in the area on the right side feels "hot". In this case, the pressure regulator 12 is set to the depressurized state, and the heat exchanger 5 is in the "two-temperature operation mode". At this time, the blowing direction of the lower left and right blades 40b is set so that high temperature air is blown from the lower blowing region BA in the wind direction louver assembly 3 to the left region. Similarly, both the upper left and right blades 40a are set to blow out in the left side region so that the medium temperature air blown out from the upper blowout region FA is blown out to the left side region. When set in this way, in the inventor's experiment, the floor temperature difference between the right region and the left region was 8 ° C.

[5] In the air conditioner as the specific example 5, the "two-temperature operation mode" is executed when only one person is present in the room to be air-conditioned during the heating operation. In the specific example 5, the blowing control is performed when the amount of activity of the person in the room is large (when the amount of movement is large) and when the amount of activity is small (when the amount of movement is small).

When the amount of movement of the person is large, high temperature air from the lower blowing region BA in the wind direction louver assembly 3 is blown toward the region where the person is present. At the same time, the upper left and right blades 40a in the upper blowing region FA swing left and right so that the medium temperature air blown out from the upper blowing region FA is blown out to the entire room to be air-conditioned. Driven and controlled. As a result, when the amount of movement of people in the room to be air-conditioned is large, it is possible to heat the entire room while performing heating centered on people, and to perform air-conditioning in which temperature unevenness in the room to be air-conditioned is suppressed.

On the other hand, when the movement of a person in the air-conditioned room is small and the amount of activity of the person is small, the "two-temperature operation mode" is executed toward the area where the person exists. That is, the high temperature air from the lower blowing region BA is blown toward the region where the person exists. At the same time, the medium temperature air blown out from the upper blowout region FA is also blown out toward the region where the person is present. In the air conditioner of the first embodiment, the wind direction louver assembly 3 blows high temperature air from the lower blowing region BA to the foot side of the room, and medium temperature air is blown from the upper blowing region FA to the foot side of the room. It is a configuration that is blown out to the upper area. Therefore, in the "two-temperature operation mode" of the air conditioner, the heating operation is performed in which the foot side is warm and the head side is lower in temperature than the foot side, and comfortable control for people in the room (head cold foot heat mode) is performed. According to an experiment conducted on the air conditioner, when the temperature of the feet of a person in the air-conditioned room is 30.2 ° C, the temperature near the head is 24.9 ° C, and the temperature difference between the feet and the vicinity of the head in the head cold foot heat mode is It was possible to obtain 5 ° C. or higher.

As described above, in the air conditioner of the first embodiment, the human presence region in the room to be air-conditioned is based on the human body detection information from the human sensation sensor 10 and the thermal image information from the hot / cold sensation sensor 11. Is specified, the "warm / cold feeling" of a person in the room is detected, and the air conditioning control is performed so that the normal person feels "comfortable" at the temperature set by the person. In the air conditioner of the first embodiment, as described above, the air conditioning control is performed by rotating and controlling the blowing direction of the left and right wind direction louvers 40 with respect to the left and right regions in the room to be air-conditioned. Further, in the air conditioner, since the vertical wind direction louver 30 having the upper, middle and lower three-stage blade plates for changing the wind direction of the blowout in the vertical direction is provided, the front and rear regions in the room to be air-conditioned, For example, it is possible to set the spraying to each of the region close to the indoor unit 1, the region far from the indoor unit 1, and the intermediate region between them in the room.

As described above, the vertical wind direction louver 30 has a three-stage configuration of an upper blade plate 31, a middle blade plate 32, and an upper, middle, and lower stage blade plate 33, and the middle stage blade plate 32 is divided into two at the center in the left-right direction. (Middle stage left blade plate 32a, middle stage right blade plate 32b). Therefore, by rotating and arranging the vertical wind direction louver 30 having a three-stage structure at a desired position in the vertical direction, it is possible to blow out air from the outlet 2b in the direction of the desired front and rear regions in the room to be air-conditioned. be. Further, the middle stage left blade plate 32a and the middle stage right blade plate 32b, which are divided into two parts on the left and right sides of the middle stage blade plate 32, are divided into four parts in the wind direction louver assembly 3 provided at the outlet 2b by changing the vertical directions of each. It is possible to change the blow-out vertical direction and the blow-out speed (blow-out air volume) from the blow-out area. That is, the four-divided blowout region is (1) the upper blowout left region between the upper blade plate 31 and the middle left blade plate 32a, and (2) between the upper blade plate 31 and the middle right blade plate 32b. Upper blowout right region, (3) Lower blowout left region between middle left blade plate 32a and lower blade plate 33, and (4) Lower blowout right between middle right blade plate 32b and lower blade plate 33 The area. In this way, the wind direction louver assembly 3 provided with the vertical wind direction louver 30 and the left and right wind direction louvers 40 changes the blowout vertical direction, the blowout left / right direction, and the blowout speed (blowout air volume) from the four-divided blowout region to achieve air conditioning. It is possible to set the front / rear / left / right regions in the target room, for example, the left / right regions close to the indoor unit 1, the left / right regions far away, and the left / right intermediate regions in between.

Further, by the "two-temperature operation mode" in the air conditioner of the first embodiment and the separate control of the wind direction louver assembly 3, even if one person is present in the room to be air-conditioned, the amount of movement of the person can be reduced. Depending on the situation, the optimum air conditioning that the person feels comfortable can be performed.

As described above, according to the air conditioner of the first embodiment, optimum air conditioning can be performed in the room to be air-conditioned, and wasteful air conditioning can be achieved by performing human-centered air conditioning in the room. While suppressing power saving, it is possible to reliably perform air conditioning that people in the room feel comfortable with.

As described above, according to the air conditioner of the present invention, the area where a person exists in the air-conditioned area is specified based on the signal indicating the change in the amount of infrared rays from the human sensor, and the heat / cold sensor is used. Based on the amount of radiation of a person in the area to be air-conditioned from the thermal image information of In addition, high-precision, human-friendly air-conditioning control can be performed by performing "two-temperature operation mode" and fine-grained air-conditioning control in the wind direction louver assembly.

Although the present disclosure has been described in the embodiments with some detail, the disclosure content of the embodiments should vary in the details of the configuration, and changes in the combination and order of the elements in the embodiments are claimed. It can be realized without departing from the scope and ideas of this disclosure.

INDUSTRIAL APPLICABILITY The present invention provides an air conditioner capable of performing fine-tuned air-conditioning control that the person feels suitable for a person existing in the air-conditioning target area, and thus is a highly practical air-conditioning device.

1 Indoor unit 2a Top opening (suction port)
2b Outlet 3 Wind direction louver assembly 4 Filter 5 Heat exchanger 6 Indoor fan 7 Ventilation path 8 Rear guider (rear guide)
9 Stabilizer (front side guide)
10 Human sensation sensor 11 Hot / cold sensation sensor 12 Pressure regulator 13 Compressor 14 Electric four-way valve 15 Decompressor 16 Outdoor heat exchanger 17 Outdoor fan 20 Mini blade 30 Vertical wind direction louver 31 Upper blade plate 32 Middle blade plate 32a Middle stage Left blade plate 32b Middle right blade plate 33 Lower blade plate 40 Left and right wind direction louvers 40a Upper left and right blades 40b Lower left and right blades 50 Control unit X 1st heat exchange area Y 2nd heat exchange area

Claims (3)

In an air conditioner composed of an indoor unit and an outdoor unit, which has a refrigerant circuit in which a refrigerant circulates in a compressor, an indoor heat exchanger, a decompressor, and an outdoor heat exchanger.
The indoor unit includes an indoor heat exchanger and
An indoor fan that exchanges heat from the suction port formed in the upper part of the indoor unit with the indoor heat exchanger to form an air flow blown out from the outlet formed in the lower part of the indoor unit.
A rear side guide portion that guides the airflow from the indoor fan in the blowout direction to the blowout port, and
A front side guide portion which is arranged to face the back side guide portion, guides the airflow from the indoor fan to the outlet together with the back side guide portion, and forms the outlet together with the back side guide portion. When,
Provided with a rotatable wind direction louver assembly that directs the air flow guided by the outlet up, down, left and right.
The wind direction louver assembly has a vertical wind direction louver and a left and right wind direction louver.
The vertical wind direction louver is an upper blade plate on the front side of the outlet, a lower blade plate on the back side of the outlet, and a middle stage arranged between the upper blade plate and the lower blade plate. It is composed of three-stage blade plates, and each blade plate is configured to rotate independently in the vertical direction.
The left and right wind direction louvers are provided at the upper left and right blades provided at the first outlet between the upper blade plate and the middle blade plate, and at the second outlet between the lower blade plate and the middle blade plate. With the provided lower left and right blades,
The middle-stage blade plate is divided into two in the left-right direction, and each is configured to be independently rotatable, and the left and right blow-out directions at each of the first outlet and the second outlet can be changed up and down. An air conditioner in which the outlet has substantially four outlet directions. The upper left and right blades are composed of a plurality of blades having substantially the same shape arranged side by side and divided into left and right blade groups with the center in the left and right direction as a boundary, and each of the left and right blade groups is independent in the left and right direction. It is configured so that it can be rotated to change the blowing direction to the left or right.
The lower left and right blades are composed of a plurality of blades having substantially the same shape arranged side by side and divided into left and right blade groups with the center in the left and right directions as a boundary, and the left and right blade groups are independent in the left and right directions. The air conditioner according to claim 1, wherein the air conditioner can be rotated to change the blowing direction to the left or right. The indoor heat exchanger has a first heat exchange region and a second heat exchange region, and the first heat exchange region and the second heat exchange region are configured so that the refrigerant flows through the pressure regulator. ,
During the heating operation, the pressure of the pressure regulator causes the first heat exchange region to form the first condensation temperature, and the second heat exchange region to form the second condensation temperature lower than the first condensation temperature. ,
The air heat-exchanged by the second condensation temperature in the second heat exchange region is mainly blown out from the first outlet, and the air heat-exchanged by the first condensation temperature in the first heat exchange region is the first. 2 The air conditioner according to claim 1 or 2, which is configured to be mainly blown out from an outlet.

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