JP5537334B2 - Air conditioner indoor unit - Google Patents

Description

  Embodiments described herein relate generally to an indoor unit of an air conditioner.

  A so-called wall-mounted air conditioner indoor unit in which a pyroelectric infrared sensor that detects the presence of a resident who operates as a heating element, that is, a human sensor is attached to the indoor unit body is often used. According to the detection by the human sensor, it is possible to provide another function of concentrating the heat exchange air to the resident or blowing the heat exchange air while avoiding the part where the resident exists.

  There are various types of indoor units equipped with this type of human sensor, and in order to expand the detection range, for example, a plurality of human sensors are provided at the upper front of the indoor unit body with different detection angles. There are indoor units, and indoor units that include human sensors and optical sensors and perform control according to the output of each sensor.

JP 2000-213791 A

  Providing a plurality of human sensors increases the cost of parts, complicates assembly and control circuits, and affects costs and service. Since the human sensor that uses the optical sensor is fixed to the indoor unit main body diagonally downward and forward, in the living room (23 tatami mats) of the maximum design area where this type of indoor unit can be installed Sensing accuracy is limited.

  The present embodiment is based on the above circumstances, and is an indoor unit of an air conditioner that has a human sensor that ensures a wide viewing angle and has improved sensing accuracy even in a large-area room. I will provide a.

  In the present embodiment, in the indoor unit of an air conditioner that sucks indoor air into the indoor unit body to exchange heat and blows the heat exchange air into the room, the indoor unit body is equipped with a human sensor and operates indoors. It has a function of sensing human body movement, which is a heating element, and is repeatedly driven to rotate left and right. The control means for controlling the human sensor controls to stop the rotation of the human sensor while the human sensor is sensing.

The external appearance perspective view of the indoor unit of the air conditioner based on this embodiment. The perspective view which expanded the principal part of the indoor unit based on the embodiment. The front view of the principal part of the indoor unit based on the embodiment. The longitudinal cross-sectional view of the indoor unit principal part based on the embodiment. The longitudinal cross-sectional view of the sensor assembly provided with the human sensitive sensor based on the embodiment. The schematic electric circuit block diagram in the indoor unit based on the embodiment. The sensing flowchart figure of the human sensitive sensor based on the embodiment. The figure explaining the sensing method of the human sensitive sensor based on the embodiment. The figure explaining the sensing direction of the human sensor according to the installation position of the indoor unit based on the embodiment.

Hereinafter, the present embodiment will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view of an indoor unit of an air conditioner, and FIG. 2 is an external perspective view of the indoor unit.
The indoor unit main body 1 includes a rear panel casing 2 and a front panel 3 that is a front casing, and has a horizontally long box shape that is long in the horizontal width direction with respect to the vertical direction. This is a so-called wall-hanging type in which the rear surface portion of the rear plate housing 2 is attached to a mounting plate at a height of the indoor wall surface.

The rear plate housing 2 constitutes a rear portion of the indoor unit body 1 and a mounting portion for components housed inside on the front side. The front panel 3 includes a front surface portion 3a, left and right side portions 3b, an upper surface portion 3c, and a lower surface portion 3d, and has a box shape with an open back surface.
The indoor unit main body 1 is configured by fitting the opening of the front panel 3 into the rear panel housing 2 to which components housed therein are attached. Most of the upper surface portion 3 c of the front panel 3 is opened and serves as an upper surface suction port 5.

  The front part 3a of the front panel 3 is formed with a front decorative panel 4 that shields the front surface, and a front lower suction port 10 is formed on the lower end side of the front decorative panel 4, and the front decorative panel 4 is a hinge formed on the upper left and right It is attached so that it can be opened and closed by a mechanism, and is configured to correspond to maintenance inside the indoor unit body 1.

A blowout port 11 is formed at a position extending from the lower end side of the front surface portion 3a of the front panel 3 to the front surface side of the lower surface portion 3d. An opening / closing panel 7 is provided in the left-right width direction on the front side of the lower front suction port 10 and the blowout port 11.
The open / close panel 7 is positioned in a substantially vertical direction when closed, so as to shield the front side of the front lower suction port 10 and the blowout port 11, and when opened, projects forward in a substantially horizontal direction, The front lower suction port 10 is opened to open the front side of the blowout port 11 on the lower surface side, and functions as a partition plate that partitions the front lower suction port 10 side and the blowout port 11 side.

Further, in the blowout port 11, a single horizontal louver 8 that adjusts the vertical and horizontal air directions of the blown air, and a plurality of vertical louvers that are mounted on the horizontal louver 8 at predetermined intervals. Louvers 9 are provided in the left-right width direction.
And the said horizontal louver 8 opens and closes the blower outlet 11 by a rotation attitude | position, and also sets the blowing direction of heat exchange air according to a driving | running condition. A plurality of vertical louvers 9 form one set, and each group is rotationally driven simultaneously to change the wind direction in the left-right direction.

  In the indoor unit main body 1, an indoor heat exchanger that is formed in a substantially inverted V shape in a side view is disposed by combining a front heat exchanger portion and a rear heat exchanger portion. An indoor fan composed of a fan motor and a cross flow fan is disposed between the front and rear heat exchanger sections. The lower end portion of the front heat exchanger section is placed on the front drain pan, and the lower end portion of the rear heat exchanger section is placed on the rear drain pan (not shown).

  Between the front panel 3 and the indoor heat exchanger, there is provided a filter support frame that supports the air filter and moves it upward or downward. The filter support frame is provided with an air filter cleaning unit that removes and stores dust accumulated in the air filter (not shown).

  An operation display unit 12 is provided on the side of the outlet 11 provided with the horizontal louver 8 and the vertical louver 9, and a light receiving unit 13 and a sensor opening 14 are arranged in parallel on the lower side of the operation display unit 12. A remote controller (hereinafter referred to as “remote controller”) R is provided separately from the indoor unit body 1, and an infrared ray that is an instruction signal is emitted toward the light receiving unit 13 by an operation on the remote controller R.

  The instruction signal received by the light receiving unit 13 is sent to a control unit (control means) D disposed on the side of the indoor heat exchanger and the indoor blower, and is processed as a control signal for each component. The contents operated on the remote controller R are displayed on the operation display unit 12.

FIG. 2 is an enlarged perspective view of the operation display unit 12 and a main part of the periphery thereof, and FIG. 3 is a view of the main part as viewed from directly below.
The operation display unit 12 is composed of a liquid crystal panel, and the light receiving unit 13 is composed of components that receive light and LEDs that emit light. The human sensor Z protrudes from the sensor opening 14 during the air conditioning operation, and when the air conditioning operation is stopped, the human sensor Z moves backward to be immersed in the front panel 3. An illuminance sensor 15 is attached to the vicinity of the light receiving unit 13 and the sensor opening 14.

  Actually, the human sensor Z is housed in the front end (lower end) of the sensor assembly 30, and the front end of the sensor assembly 30 protrudes from the lower surface of the front panel 3 during the air conditioning operation. Can be sensed. When the air conditioning operation is stopped, the control unit D outputs a control signal for moving the tip of the sensor assembly 30 backward into the front panel 3.

  Therefore, since the human sensor Z is housed in the interior of the indoor unit body 1 when the front panel 3 that is an external part is removed from or attached to the rear panel housing 2 during service, the work is not hindered. As a result, workability can be improved.

FIG. 4 is a view showing a mounting structure of the sensor assembly 30 including the human sensor Z. As shown in FIG.
As described above, the opening / closing panel 7 is attached to the front lower suction port 10, and the opening / closing panel 7 opens the front lower suction port 10 during the air conditioning operation shown in the figure. The sensor assembly 30 provided with the human sensor Z at the tip is attached to a side portion of the outlet 11.

  The sensor assembly 30 is attached to the indoor unit main body 1 so as to be inclined by 35 ° as an attachment angle forward with respect to the vertical axis La of the indoor unit main body 1. As a result of various experiments, it was found that the mounting angle can be detected efficiently and reliably.

FIG. 5 is a longitudinal sectional view of the sensor assembly 30 in the same embodiment.
In the figure, reference numeral 31 denotes a sensor case, which constitutes the front end (lower part) of the sensor assembly 30. The sensor case 31 is a cylindrical body having a two-stage diameter, a sensor window 32 is provided at the tip hemisphere, and a sensor substrate 33 is accommodated therein. A human sensor Z composed of a Furnell lens and a pyroelectric element is mounted on the lower end of the sensor substrate 33, and a sensor connector 34 is attached to the upper end.

  The human sensor Z is fitted into the sensor window 32 of the sensor case 31 and can be easily confirmed from the outside of the sensor case 31. On the outer peripheral surface of the sensor case 31, a guide projection 35 is provided in the vicinity of the sensor window 32. Furthermore, a plurality of guide ribs 36 are provided in the upper end portion in parallel with each other along the axial direction.

  The outer peripheral surface of the sensor case 31 is covered with a guide ring 38. A circular groove is provided in the lower end portion of the inner peripheral surface of the guide ring 38 along the circumferential direction, and a lower end portion of the spiral groove provided in a spiral manner up to the upper end portion of the guide ring 38 is continuously provided in a part of the circular groove. Is done. The guide protrusion 35 of the sensor case 31 is inserted into and engaged with either the spiral groove or the circular groove. A part of the guide ring 38 is attached and fixed to a receiving case 40 whose upper surface is open.

  A drive motor (not shown) as a drive source is attached to the lower surface of the receiving case 40. The drive shaft of the drive motor protrudes from the upper surface of the receiving case 40 through a hole provided in the receiving case 40. The receiving case 40 supports a drive gear (not shown). The drive shaft of the drive motor is inserted and fitted into the hole of the drive gear on the receiving case 40.

  A driven gear 44 that meshes with the drive gear is supported on the receiving case 40. The receiving case 40 that supports the driven gear 44 is provided with an opening having a diameter through which the upper end of the sensor case 31 is freely inserted. In the inner diameter hole of the driven gear 44, a plurality of notches having the same shape and the same dimensions as the planar view shape of the guide rib 36 are provided.

  The upper surface opening of the receiving case 40 is closed by a presser cover 47. A guide cylinder 48 is integrally provided above the driven gear 44 of the presser cover 47. The inner diameter of the guide cylinder 48 is the same as the diameter of the opening provided in the receiving case 40, and the shafts of the guide cylinder 48, the driven gear 44, and the receiving case 40 are all aligned at the same position.

  The upper end of the sensor case 31 is inserted into the inner diameter hole of the driven gear 44 through the opening of the receiving case 40, and the guide rib 36 engages with the notch of the driven gear inner diameter hole. Therefore, if the driven gear 44 rotates, the rotational force is transmitted to the sensor case 31 and rotates integrally. However, the sensor case 31 has a notch portion and a guide rib 36 with respect to the driven gear 44 whose vertical position is fixed. From the relationship, it can move in the axial direction.

FIG. 6 is a schematic electric circuit block diagram of the indoor unit of the air conditioner.
Detection information is input from the human sensor Z and the illuminance sensor 15 to the control unit D, and an instruction signal is also input from the remote controller R.

  In the control unit D, calculation is performed based on the input from these information and information from other sensors, a display signal is output to the operation display unit 12, and a drive motor circuit of a drive mechanism that drives an electric component An instruction signal to Ma, drive motor circuit Mb, and others is output.

  The drive motor circuit Ma outputs drive signals to the drive sources of the horizontal louver 8 and the vertical louver 9 constituting the blowing louver, the drive source of the open / close panel 7, the drive source of the human sensor Z, and the like. The drive motor Mb outputs a drive signal to the drive source (fan motor) of the indoor fan F.

  An air conditioner indoor unit configured as described above, when an operation start button provided in a remote controller (remote controller) R is pressed and an operation start signal is input to the control unit D, air conditioning operation is started. The

  That is, the open / close panel 7 and the horizontal louver 8 are rotationally driven to open the front lower suction port 10 and the blowout port 11. At the same time, the compressor of the outdoor unit (not shown) is driven, and the cross-flow fan of the indoor blower is rotationally driven to perform a blowing action.

  The refrigeration cycle operation is started as the compressor is driven, and the refrigerant is guided to the indoor heat exchanger. By driving the indoor blower, room air is sucked into the main body 1 from the upper surface suction port 5 and the lower front suction port 10 and guided to the suction ventilation path.

  The room air sucked into the main body 1 passes through the air filter, and dust contained in the room air is captured. The cleaned indoor air flows through the indoor heat exchanger and exchanges heat with the refrigerant discharged from the compressor and guided through the refrigeration cycle circuit. When the cooling operation is selected, the air is cool, and when the heating operation is selected, the air is warm.

  Any heat exchange air is guided along the blowout ventilation path, guided to the horizontal louver 8 and the vertical louver 9, and blown into the room from the blowout port 11. Since the front lower suction port 10 as well as the upper surface suction port 5 is provided, the indoor air flows in a substantially uniform state throughout the indoor heat exchanger 13 and exchanges heat. The intake air volume is increased, and the heat exchange efficiency of the indoor heat exchanger 13 can be improved.

  In the sensor assembly 30, the guide protrusion 35 provided on the outer peripheral surface of the sensor case 31 is provided on the inner peripheral surface of the guide ring 38 when attached to the indoor unit body 1 (even when the air conditioning operation is stopped). It is assembled so as to be engaged with the upper end of the groove.

  The sensor window 32 of the sensor case 31 is in a position closed by the lower end of the guide ring 38, and the human sensor Z fitted into the sensor window 32 is covered with the guide ring 38. When the sensor case 31 is inserted into the guide ring 38, the human sensor Z is immersed from the front panel 3 and hidden from the sensor opening 14.

  When the control unit D receives the air conditioning operation start signal, it issues the above-described control signal and also issues a drive signal to the drive motor. The drive motor 42 is rotationally driven in a predetermined direction, and the drive gear and the driven gear 44 are rotated. Accordingly, the sensor case 31 rotates integrally with the driven gear 44.

  The sensor case guide protrusion 35 is guided by the spiral groove of the guide ring 38, and the sensor case 31 descends while rotating. Even if the guide protrusion 35 descends to the lower end position of the spiral groove, the drive motor continues to be driven, and the guide protrusion 35 moves from the spiral groove to the engagement position with the circular groove. In this state, the sensor case 31 protrudes from the guide ring 38.

  That is, the sensor window 32 protrudes from the guide ring 38 and the human sensor Z is exposed, as shown in FIGS. The drive motor continues to rotate at a predetermined rotational speed even after the guide protrusion 35 has shifted to the engagement position with the circular groove of the guide ring 38, and is temporarily controlled to stop at that timing.

  The drive motor 42 is reversely driven. When the guide protrusion 35 reaches the position immediately before reaching the position where the circular groove and the spiral groove are connected, the drive motor is controlled to rotate in reverse again. Therefore, the sensor case 31 is driven to rotate by a predetermined angle in the reverse direction without changing the axial position, and is further driven to rotate by a predetermined angle in the reverse direction.

  Thereafter, this operation is repeated. During the air-conditioning operation, the human sensor Z protrudes from the sensor opening 14 of the front panel 3 and repeats turning left and right. The human sensor Z senses a human body operation as described later, and sends a sensing output signal to the control unit to obtain a function selected by the remote controller. This state is continued during the air conditioning operation.

The human sensor Z is controlled based on a flowchart as shown in FIG.
In step H1, energization to the human sensor Z (pyroelectric element) is started in step H2, and control of a drive source (drive motor) provided in the sensor assembly 30 is started. In step H3, it is determined whether or not 40 seconds have elapsed from the start of the human sensor Z. That is, the time required for the human sensor Z to rise is counted.

  If Yes in step H3, the process moves to step H4, and sensing of the human sensor Z is started. If No in step H3, the process returns to step H2. It is determined whether or not X seconds have elapsed after the sensor of the human sensor Z is started in step H4. The X seconds will be described later.

  If the passage of X seconds is confirmed in step H5, the process proceeds to step H6 to operate the driving motor of the human sensor Z. The human sensor Z moves and senses zones (areas) to be sensed one after another as described later. If No in step H5, the process returns to step H4.

  From step H6 to step H7, it is determined whether or not the energization to the human sensor Z should be continued. If Yes, the process returns to step H4. If No, the process moves to step H8he and ends (end).

Specifically, the control unit D performs the following control on the human sensor.
As the first embodiment, in the indoor unit including the human sensor Z having the above-described configuration, the control unit D controls to stop the rotation of the human sensor Z while the human sensor Z is sensing.

  That is, here, the human sensor Z, which is one pyroelectric infrared sensor, is mounted on the indoor unit body 1 and protrudes from the wall surface of the indoor unit body 1 during air-conditioning operation. Sensing human body movement, which is a heating element that operates in

By repeatedly driving the human sensor Z to the left and right, even with one sensor, the entire room can be sensed regardless of the size of the room, and the reliability is improved. However, since the human sensor Z reacts to an operating heat generating element, if the human sensor Z itself senses while rotating, it also reacts to a stopped heat generating element (for example, a TV, a kettle pot, etc.). .
Therefore, the control unit D controls the human sensor Z to perform the sensing operation by stopping the human sensor Z from rotating and obtains an improvement in sensing accuracy.

  As a first example of the first embodiment, the control unit D performs control so as to continue to be in a sensing state even while the human sensor Z is rotating, but ignore the sensing output during rotation. To do.

  That is, the human sensor Z requires a certain amount of time from when energization is started until it can be sensed. Therefore, regardless of whether the human sensor Z is rotating or stopped, the human sensor Z is always energized to maintain a sensing enabled state. Therefore, the sensing rise time after stopping the rotation of the human sensor Z becomes unnecessary.

  Since sensing is performed even during rotation, the human sensor Z sends a sensing output signal to the control unit D if the human body operation is confirmed. However, in the control part D, even if it receives a sensing output during rotation, it is disregarded. Sensing accuracy is improved by not using the content sensed during the rotation for feedback control.

  As a second example of the first embodiment, the control unit D ignores the sensing output for a predetermined time after stopping the rotation of the human sensor Z, and then the sensing output becomes a predetermined value or less. If there is a sensing output after it has been confirmed, it is determined to be valid.

  That is, as described above, when the human sensor Z rotates, it reacts also to the stopped heating element, but particularly when it reacts to a large temperature difference (such as an electric heater), the sensing output is It takes time to stabilize.

  If sensing is started immediately after the rotation of the human sensor Z is stopped, if the sensor responds to a large temperature difference during the rotation, the effect remains and sensing is output as a human body motion. On the other hand, the control unit D ignores the sensing output for a predetermined time after stopping the rotation of the human sensor Z, thereby making an accurate determination.

  Then, after a lapse of a specified time for ignoring this sensing output, confirm that the sensing output is stable below the specified value and that the influence of the rotating sensing output is completely eliminated. If it is valid, it is taken in as data.

  Even if a predetermined time for ignoring the sensing output elapses, if the sensor output is equal to or greater than the predetermined value, it is determined that the influence of the sensing output during rotation remains, and the sensing is not started. Accordingly, the sensing accuracy can be further improved.

  The predetermined time for ignoring the above-described sensing output is actually set to “8 seconds”, but the control unit D has a function that can arbitrarily adjust this ignoring time. Thus, even if the human sensor Z rotates and reacts to a heating element having a larger temperature difference, the control unit D can be ignored. As a third example of the first embodiment, the control unit D controls the human sensor Z to rotate while shifting the angle by a predetermined angle.

  For example, the range that can be detected by sensing is set such that the horizontal direction is set to ± 85 degrees on the center reference and the vertical direction is set to 5 to 85 degrees on the horizontal reference, and a range obtained by dividing this into a plurality of horizontal directions is sensed.

  In other words, the room where the above-described indoor unit body 1 is installed is designed assuming that the maximum number of tatami mats is 23 tatami mats. If this room is a square, the length of the diagonal line from the upper corner of the ceiling to the lower corner of the diagonal floor is about 8M. When the indoor unit main body 1 is attached to the high corner of the room, the infrared rays radiated from the human sensor Z have a beam thickness of about 1 M in diameter at 8 M ahead.

  The human sensor Z detects the total temperature within the beam width, and if there is no person within this beam width, or if there is no person, it does not move (non-operation), the temperature Since the sum of the values does not change, there is no response and no sensing output. If a person enters / exits (operates) from the beam width, the total temperature changes, and thus there is a sensing output.

  As described above, since a reaction does not occur unless a person enters or exits from the range of the width 1M about 8M away from the indoor unit main body 1, rough sensing accuracy is obtained. In the present embodiment, sensing accuracy can be improved by using the same human sensor Z so that sensing can be performed even if a person operates with a smaller width (for example, 50 cm).

  Actually, the human sensor Z is stopped to rotate toward a plurality of areas, and the rotation is controlled while shifting the angle by a predetermined angle in each area to perform sensing. About 8M ahead, the beam is irradiated in a state shifted from the first irradiated beam in each area in a plurality of stages, so that the sensing output can be surely responded to the operation of a small width (50 cm) of a person. To do.

  As a fourth example of the first embodiment, the control unit D senses that the human sensor Z divides the room into a predetermined number of areas and shifts the angle by a predetermined angle in each area. While rotating, control is performed so that the number of sensing outputs in each area is integrated.

  That is, the specific control of the third embodiment is defined here. Actually, as shown in FIG. 8, the room is divided from the first area to the fifth area, and each area is divided at intervals of 32.5 °. The human sensor Z sequentially rotates from the first area to the second area so as to face the respective areas. When the human sensor Z moves to the fifth area, the human sensor Z returns to the first area and repeats the rotation.

  In other words, the human sensor Z senses by rotating and stopping in turn at positions 1 to 5 in each area. When the sensing at the circled character 5 position is completed, the sensor returns to the “1 (dash)” position of the circled character 1 and from this point, the rotation is stopped in turn to the “1 (dash)” position of the circled character 5 to perform sensing. .

  The interval between the position of each number of round characters and the position of “′ (one dash)” is set to 5 °. When the sensing at the position of “'(1 dash)” of the circled character 5 is completed, this time, it returns to the position of “(2 dash)” of the circled character 1, and from here, the character ““ (2 dash) ”of the circled character 5 Rotate to position and stop in order.

  The interval between the “′ (1 dash)” position of the number of round characters and the “” (2 dash) ”position of the number of round characters is also set to 5 °. When the sensing at the “” (2 dash) ”position of the circle character 5 is completed, the sensor returns to the circle character 1 again to perform sensing, and the above-described control is repeated.

  In this way, the control unit D performs sensing by stopping the rotation of the human sensor Z while shifting the angle from the first area to the fifth area by a predetermined angle (5 °). In about 8M ahead, the beam is irradiated in a state shifted by two steps (by about 33 cm) from the beam irradiated first.

  Therefore, in about 8M ahead, the beam is irradiated in a state shifted from the first irradiated beam position of each area in a plurality of stages, so that it reacts to the movement of a small width (50 cm) of a person and reliably Output sensing.

  As a fifth example of the first embodiment, the control unit D limits the sensing area of the human sensor Z based on the setting of indoor unit installation position information for the remote controller R.

  That is, there are various circumstances in installing the indoor unit in the room, and the installation location varies depending on the room. Therefore, the setting of “indoor unit installation information” can be input to the remote controller R, and the above information is input after the installation is completed.

  Actually, as shown in FIG. 9, when the indoor unit body 1 is installed at the right-side corner of the room, “right installation” is set to the remote controller R. The human sensor Z is a range where “right installation” is described, and the left side toward the indoor unit body 1 is set as a sensing area, and this area is concentratedly sensed.

When the indoor unit main body 1 is installed at the left corner of the room, “left installation” is set in the remote controller R. The human sensor Z is a range in which “left installation” is described, and the right side toward the indoor unit body 1 is set as a sensing area, and this area is concentratedly sensed. If installed in the center of the room, set “central installation”. The human sensor Z uses a range described as “central installation” as a sensing area, and performs sensing in a concentrated manner in this area.
By limiting the sensing area according to the installation position of the indoor unit body 1 in this way, it is not necessary to perform sensing to an unnecessary place, and the sensing accuracy of the human sensor Z is improved.

As a sixth example in the first embodiment, the control unit D initializes the position of the human sensor Z every time the human sensor Z rotates a predetermined number of times.
That is, as described above, the human sensor Z, for example, sequentially stops and senses for five areas, and then returns to the first area to shift the angle, and for the five areas, Rotate and stop in order to perform sensing. Thus, during the air conditioning operation, the human sensor Z must be continuously controlled.

  As the human sensor Z stops rotating, there is a backlash of the drive motor that constitutes the drive mechanism, and there is a concern that the backlash may occur due to wear of the component parts, resulting in positional deviation. Therefore, the control unit D initializes the position of the human sensor Z periodically (for example, every three reciprocations) to prevent the positional deviation and improve the sensing accuracy of the human sensor Z.

  As a seventh example of the first embodiment, the control unit D controls the human sensor Z to face away from the room when the air-conditioning operation is stopped, and controls to move into the indoor unit body 1.

  That is, as shown in FIG. 8 again, in sensing, the human sensor Z rotates 250 ° from the reference position S and moves to the position of the circle character 1 in the first area, and starts sensing. At the reference position S, as described above with reference to FIG. 5, the human sensor Z is on the upper part of the sensor assembly 30 and is immersed in the sensor opening 14 provided in the front panel 3.

  In addition, at this time, the human sensor Z is designed to face backward, which is the direction opposite to the room, and is completely shielded from the room. Therefore, the dust floating in the room does not adhere to the surface of the Furnell lens constituting the human sensor Z, and the deterioration can be prevented and the durability can be improved. Since it is impossible for humans to come into contact, it can be reliably protected from destruction and breakdown.

As a second embodiment, in the indoor unit including the human sensor Z having the above-described configuration, the control unit D continues the sensing output from the human sensor Z for a predetermined time in a state where the automatic operation mode is selected. If not, the temperature is corrected and the illuminance of the operation display unit 12 and the light receiving unit 13 is controlled to be reduced. That is, the presence of the human sensor Z makes it possible to operate the human body as a heating element that operates indoors. , And now it is possible to recognize the presence or absence of people. Therefore, when the automatic operation mode is selected for the remote controller R and there is no sensing output for a predetermined time (for example, 30 minutes) and the control unit D determines that there is no person, the set temperature correction is performed. Eggplant.

  Specifically, during operation in the cooling mode, the temperature is automatically adjusted to 2 ° C. higher than the set temperature for the remote controller R. During operation in the heating mode, the temperature is automatically adjusted 2 ° C. lower than the set temperature for the remote controller R. In any operation mode, power consumption is reduced without deteriorating comfort. Further, since the display brightness on the operation display unit 12 and the illumination brightness on the light receiving unit 13 are reduced, significant energy saving can be obtained.

  In the case of the automatic operation mode, since the air conditioner automatically gives priority to comfort and energy saving, the presence / absence determination of the resident within the predetermined time described above is performed. In the case where is selected or the heating operation mode is selected, the above-described presence / absence determination of the resident may be invalidated in order to prioritize the comfort in each mode.

  As a third embodiment, in an indoor unit provided with the human sensor Z having the above-described configuration, the control unit D performs a predetermined long-time sensing output from the human sensor Z when the automatic operation mode is selected. When not continuing, the air-conditioning operation with a small electric power is performed and the illuminance of the operation display unit 12 and the light receiving unit 13 is controlled to be reduced.

  That is, by providing the human sensor Z, it is possible to sense a human body motion, which is a heating element that operates indoors, and recognize whether a person is present or not. Therefore, when the automatic operation mode is selected for the remote controller R and the control unit D determines that there is no sensing output and there is no person for a predetermined long time (for example, 4 hours), the power is low. Air conditioning operation.

Specifically, in both the case of operating in the cooling mode and the case of operating in the heating mode, control is performed to reduce the compressor provided in the outdoor unit to a low rotation speed, and low power operation is performed. To do. Therefore, a significant reduction in power consumption can be obtained, and even if the operation stop is forgotten, the waste of electricity bill is prevented as much as possible.
At the same time, since the display luminance on the operation display unit 12 and the illumination luminance on the light receiving unit 13 are reduced, both can save energy.

  As a first example in the third embodiment, the control unit D maintains the lower limit temperature that can be set in the cooling operation mode as the air-conditioning operation with low power, and can be selected in the heating operation mode. Control is performed to maintain the above.

  That is, when the minimum power operation is performed, the air conditioning capacity may be insufficient due to a sudden change in conditions, and the set temperature may not be maintained. Therefore, control is performed so as to maintain a selectable upper limit temperature (32 ° C.) or lower in the cooling operation mode and maintain a selectable lower limit temperature (15 ° C.) or higher in the heating operation mode. This can prevent a significant deterioration in air conditioning comfort.

  As a second example of the third embodiment, when the automatic operation mode is selected, the control means D does not continue the sensing output from the human sensor Z for a predetermined long time. However, if the automatic turn-off is enabled, the cleaning operation inside the indoor unit body 1 is performed, and the operation stop is controlled after the cleaning operation is completed.

  That is, even if the automatic operation mode is selected for the remote controller R, if automatic off is selected, a state in which there is no sensing output from the human sensor Z has passed for a predetermined long time (for example, 4 hours). Thus, the control unit D closes the front lower suction port 10 with the open / close panel 7, closes the blowout port 11 with the horizontal louver 8, drops the rotation of the indoor blower, and changes to the dehumidifying operation mode.

  As a result, dry air circulates in the indoor unit main body 1 and moisture attached to each component is quickly dried, so that a cleaning operation is performed to prevent generation of rust and propagation of various germs. Then, after the cleaning operation is completed, the operation stop is controlled. Normally, the cleaning operation is performed after the air conditioning operation is completed, but the cleaning operation is also performed under the above-described conditions.

  As a third example of the third embodiment, when the automatic operation mode is selected, the control means D is when the sensing output from the human sensor Z is not continued for a predetermined long time. However, if the user sets the automatic on / off mode to automatically start and stop operation with the function setting means provided on the remote control, the air conditioning operation stop is controlled, and then the sensing output of the human sensor Z Based on this, control is performed so that the air-conditioning operation is resumed.

That is, even if the automatic operation mode is selected for the remote controller R, if automatic on / off is selected, a state where there is no sensing output from the human sensor Z passes for a predetermined long time (for example, 4 hours). At that time, the air conditioning operation is stopped. After that, if the human sensor Z senses a human body motion and there is a sensing output, the air conditioning operation is automatically restarted.
As a result, waste of electricity costs can be prevented, and air conditioning operation can be resumed without any operation on the remote controller R, which is convenient.

  As a fourth example of the third embodiment (including the second embodiment), the control unit D is configured so that when the automatic operation mode is selected for the remote controller R, the human sensor Z If the sleep output setting mode is selected even when the sensing output is not continued for a predetermined time or not during a predetermined long time, it is determined that the automatic on / off mode is invalid.

  That is, when the automatic operation mode is selected for the remote controller R, the control unit D is in the middle of a case where there is no sensing output from the human sensor Z for a predetermined time (for example, 30 minutes) or for a predetermined long time ( For example, if the sleep operation setting mode is selected for the remote controller R within those hours even if the operation does not continue for 4 hours, the condition in the automatic on / off mode is invalidated and the sleep operation setting is made. Priority.

  As a fifth example of the third embodiment (including the second embodiment), the control unit D is configured such that when the automatic operation mode is selected, the sensing output from the human sensor Z is a predetermined time. Even if it is not continued, or even if it is not continued for a predetermined long time, the presence of the resident is determined as invalid when the code is received from the remote controller R.

  That is, when the automatic operation mode is selected for the remote controller R, the control unit D does not have a sensing output from the human sensor Z for a predetermined time (for example, 30 minutes) or for a predetermined long time (for example, 4 hours). ), If any code (command) is received from the remote control R within those times, the condition in the automatic on / off mode is invalidated and control according to the code from the remote control R is performed. .

  As a 4th embodiment, in the indoor unit provided with human sensor Z of the above-mentioned composition, control part D is the time when automatic operation mode is selected and heating mode is performed. When the number of sensing outputs is equal to or greater than the predetermined number of sensing outputs, control is performed so that the set temperature correction is performed.

  That is, only when the automatic operation mode is selected for the remote controller R and the heating mode is executed, the number of sensing outputs when the human sensor Z is arbitrarily sensed (for example, 6 reciprocating rotations) is a predetermined number of times. If it is above, it is determined that the amount of activity of the resident is large, and the set temperature is automatically corrected (decreased) in order to match the sensed temperature.

  Therefore, while maintaining air conditioning comfort, power consumption is reduced and energy saving operation is automatically obtained. Note that the correction amount of the set temperature described above can be arbitrarily adjusted according to the capability of the air conditioner, so that the optimum temperature difference can be adjusted.

  As a fifth embodiment, in the indoor unit provided with the human sensor Z having the above-described configuration, the control unit D senses the human sensor Z by dividing the room into a predetermined number of areas, and for each area. The position of the resident is determined by accumulating the number of sensing outputs, and control is performed so as to adjust the blowing direction of the heat exchange air from the blowing port 11.

  That is, as described above with reference to FIG. 8, the room is divided into first to fifth areas, and the number of sensing outputs in each area is integrated to determine the position of the resident. Then, the control unit D determines that there is a person in an area where the number of sensing outputs is large, and controls the horizontal louver 8 and the vertical louver 9 so as to blow out in a concentrated manner in that area or to avoid the area.

  As a first example in the fifth embodiment, the control unit D controls the human sensor Z to divide the room into five areas for sensing, and the human sensor Z has the highest number of sensing outputs. In the case of ranking, when there are two areas where the number of times of output is 1st, the priority of the blowout direction is as follows: the central blowout to the first place, the left and right blowout to the second place, and the left and right oblique blowout Control in order.

  That is, as described above with reference to FIG. 8, the room is divided into first to fifth areas, and the number of sensing outputs in each area is integrated to determine the position of the resident. And the control part D has determined the priority in case there are two areas with the same number of sensing outputs.

  Here, the outlet for the first area is “right outlet”, the outlet for the second area is “oblique right outlet”, the outlet for the third area is “center outlet”, and the outlet for the fourth area is “oblique left”. The balloon for the fifth area is called “left balloon”.

  For example, when the number of sensing outputs in the first area and the third area is first in the same ratio, the third area that makes the central blowout is regarded as the first place, and the first area that makes the right blowout is 2 Control it by considering it as a place. The control unit D controls to blow a large amount of heat exchange air to the third area and to blow a smaller amount of heat exchange air to the first area.

  For example, if the number of sensing outputs in the 2nd area and the 5th area is 1st in the same ratio, the 5th area forming the left blow is regarded as 1st and a large amount of heat exchange air is blown, and the right oblique blow The second area that constitutes the control is controlled to blow the heat exchange air of the amount less than that in the second place.

  In addition, when the number of sensing outputs in the second area and the fourth area is first in the same ratio, it is equal to the second area that forms the right oblique blowout and the fourth area that forms the left oblique blowout. To make a good blowout. Similarly, if the first area and the fifth area are ranked first in the same ratio, uniform blowout is made to the first and fifth areas.

  In any case, regarding the setting of the blowing direction when there are two areas where the number of sensing outputs of the human sensor Z is the first, the priority order of the blowing direction is the order of the central blowing, the left and right blowing, and the left and right oblique blowing. By giving priority to the central blowout first, it is possible to reduce a sense of incongruity between the airflow required by the resident and the airflow of the heat exchange air actually blown from the blowout port 11.

  As a second example of the fifth embodiment, the control unit D controls the human sensor Z to sense by dividing the room into five areas, and the number of sensing outputs of the human sensor Z is first. When there are three or more areas, the blowing direction is controlled to “wind blowing = wide-angle wide blowing” or “wind avoidance = center blowing”.

  That is, as described above with reference to FIG. 8, when the room is divided into the first area to the fifth area to perform sensing, and there are three or more areas having the highest number of sensing outputs, for example, the first If the number of times of sensing in each of the third and fourth areas is first in the same ratio, it is determined that there are many residents in the room.

Then, the blowing direction by the horizontal louver 8 and the vertical louver 9 is set as a wide-angle wide blowing, and heat exchange air is blown to every corner of the room so that all the residents are exposed to the heat exchange air. Alternatively, when the remote control R is set so as not to apply heat exchange air to the resident, control is performed so that it is not applied to the resident as much as possible as a central blow for the third area.
In this way, even in a room with a large area, the human sensor Z that secures a wide viewing angle is provided, and the sensing accuracy is further improved.

  As mentioned above, although this embodiment was described, the above-mentioned embodiment is shown as an example and does not intend limiting the range of embodiment. The novel embodiment can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  5 ... Upper surface suction port, 10 ... Lower front suction port, 11 ... Outlet port, 1 ... Indoor unit body, Z ... Human sensor Z, D ... Control unit (control means), R ... Remote control (remote controller), 12 ... Operation display section.

Claims (18)

An indoor unit main body that sucks indoor air from the suction port and exchanges heat, and blows the heat exchange air into the room from the blowout port;
A human sensor mounted on this indoor unit main body and equipped with a function of sensing human body movement which is a heating element that operates indoors, and is repeatedly driven to rotate left and right,
Control means for controlling the human sensor,
The control means controls to stop the rotation of the human sensor when sensing the human motion of the human sensor, and ignores the sensing output for a predetermined time after stopping the rotation of the human sensor. An indoor unit of an air conditioner characterized in that after confirming that the sensing output has become equal to or less than a predetermined value, if the sensing output is present, it is determined to be valid . An indoor unit main body that sucks indoor air from the suction port and exchanges heat, and blows the heat exchange air into the room from the blowout port;
A human sensor mounted on this indoor unit main body and equipped with a function of sensing human body movement which is a heating element that operates indoors, and is repeatedly driven to rotate left and right,
Control means for controlling the human sensor,
The control means controls to stop the rotation of the human sensor when sensing the human motion of the human sensor, and directs the human sensor toward the anti-indoor direction when stopping the air conditioning operation. Control to immerse inside
An air conditioner indoor unit. The control means performs control so that the sensing sensor continues to be in a sensing state even during rotation of the human sensor, but ignores the sensing output during rotation.
The indoor unit of an air conditioner according to claim 1 or 2, wherein the indoor unit is an air conditioner. The indoor unit of an air conditioner according to any one of claims 1 to 3, wherein the control means controls the human sensor to rotate while shifting the angle by a predetermined angle. The control means senses the human sensor by dividing the room into a predetermined number of areas, rotates while shifting the angle by a predetermined angle in each area, and accumulates the number of sensing outputs in each area. The indoor unit for an air conditioner according to any one of claims 1 to 3, wherein the indoor unit is controlled as follows. The indoor unit of an air conditioner according to claim 4, wherein the control means limits a sensing area of the human sensor based on setting of indoor unit installation position information for a remote controller. The indoor unit of an air conditioner according to claim 1 or 2 , wherein the control means initializes the position of the human sensor whenever the human sensor rotates a predetermined number of times. When the automatic operation mode is selected and the sensing output from the human sensor has not continued for a predetermined time, the control means performs a set temperature correction and controls to reduce the illuminance of the display unit.
The indoor unit of an air conditioner according to any one of claims 1 to 7, wherein the indoor unit is an air conditioner. When the automatic operation mode is selected and the sensing output from the human sensor does not continue for a predetermined long time, the control means performs the air conditioning operation with the minimum power and the display unit Control to reduce illuminance
The indoor unit of an air conditioner according to any one of claims 1 to 7, wherein the indoor unit is an air conditioner. As the air conditioning operation with the minimum power, the control means performs control so as to maintain a temperature lower than an upper limit temperature that can be set in the cooling operation mode and maintain a temperature higher than the lower limit temperature that can be set in the heating operation mode.
The air conditioner indoor unit according to claim 9. When the automatic operation mode is selected and the sensing output from the human sensor does not continue for a predetermined long time, if the automatic turn-off is enabled, the above control means will pass a predetermined long time. Later, the interior of the indoor unit is cleaned, and after this cleaning operation is finished, the shutdown is controlled.
The air conditioner indoor unit according to claim 9. When the automatic operation mode is selected, even when the sensing output from the human sensor does not continue for a predetermined long time, the user automatically starts operation with the function setting means. If the automatic on / off mode for carrying out low running stop is enabled, the air conditioning operation stop is controlled after a predetermined long period of time, and then the air conditioning operation is resumed based on the sensing output of the human sensor.
The air conditioner indoor unit according to claim 9. When the automatic operation mode is selected, the control means is in the middle when the sensing output from the human sensor is not continued for a predetermined time, or in the middle when the sensing output is not continued for a predetermined long time. However, if the sleep operation setting mode is selected, the automatic on / off mode is determined to be invalid.
The indoor unit of an air conditioner according to claim 10 or 11, wherein the indoor unit is an air conditioner. When the automatic operation mode is selected, the control means is in the middle when the sensing output from the human sensor is not continued for a predetermined time, or in the middle when the sensing output is not continued for a predetermined long time. Even if a code is received from the remote controller, the presence of the resident is determined as invalid
The indoor unit of an air conditioner according to claim 10 or 11, wherein the indoor unit is an air conditioner. When the automatic operation mode is selected and the heating mode is executed, the control means performs control so that the set temperature correction is performed when an arbitrary number of sensing outputs of the human sensor is equal to or greater than a predetermined number of sensing outputs.
The indoor unit of an air conditioner according to any one of claims 1 to 14, wherein the indoor unit is an air conditioner. The control means senses the human sensor by dividing the room into a predetermined number of areas, accumulates the number of sensing outputs for each area, determines the position of the resident, and heat exchange air from the outlet Control to adjust the blow direction of
The indoor unit of an air conditioner according to any one of claims 1 to 15, wherein the indoor unit is an air conditioner. The control means controls the human sensor to divide the room into five areas for sensing, and when there are two areas where the number of sensing outputs of the human sensor is the first, the priority order of the blowing direction Are controlled in the order of central blowout, left and right blowout, and left and right oblique blowout
The indoor unit of an air conditioner according to claim 16, wherein the indoor unit is an air conditioner. The control means controls the human sensor to divide the room into five areas for sensing, and when there are three or more areas where the number of sensing outputs of the human sensor is first place, The indoor unit of an air conditioner according to claim 16, wherein the air conditioner is controlled to be "wind blow = wide-angle wide blowout" or "wind avoidance = central blowout".

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