JP2014043997A - Indoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioner in which a human detection sensor detecting existence of heat generation from a dweller, is accommodated in an indoor unit body and covered by a sensor cover to keep good appearance and to improve detection accuracy of the human detection sensor.SOLUTION: An indoor unit of an air conditioner includes an indoor unit body sucking the indoor air from a suction port for heat exchange, and blowing out the air after the heat exchange indoors from a supply opening. The indoor unit body has a lower face portion formed into a curved shape curved upward from a back-side end portion toward a front-side end portion. The supply opening is formed on the back-side end portion of the lower face portion, and a vertical wind direction louver having a curved face same as the lower face portion, is openably and closably fitted to the supply opening. A sensor cover having a curved face same as the lower face portion is fitted to the front-side end portion of the lower face portion, and a human detection sensor detecting the existence of a dweller is accommodated in the sensor cover.

Description

  An embodiment of the present invention relates to an indoor unit of an air conditioner equipped with a human sensor.

  Air conditioner indoor units equipped with pyroelectric sensors that detect the presence of heat generated from the human body are often used. By the detection of the human sensor, the heat exchange air can be concentrated on the area where the resident is present or the heat exchange air can be controlled while avoiding the area where the resident is present.

  There are various types of indoor units equipped with this type of human sensor, and a single human sensor protrudes from the indoor unit main body and is detected while repeatedly rotating left and right. There is a structure in which a human sensor is arranged on the front of the indoor unit main body and arranged in the left-right direction by changing the sensor arrangement angle.

JP 2010-190528 A

A structure in which one human sensor protrudes from the main body of the indoor unit and repeats the rotation to the left and right complicates the driving / control structure of the human sensor, leading to an increase in cost.
A structure in which a plurality of human sensors are arranged in the left-right direction position on the front surface of the indoor unit main body requires a large depth space for arranging the human sensors with an angle in the casing of the indoor unit main body. . For this reason, the depth direction of the indoor unit main body protrudes forward by an amount corresponding to the installation space, and there is a problem that the casing size of the indoor unit increases.

  For these reasons, a human sensor that detects the presence of a resident is housed inside the indoor unit body without enlarging the depth of the indoor unit, and covered with a sensor cover to maintain the appearance and detect the human sensor. An air conditioner indoor unit that can improve accuracy has been desired.

The indoor unit of the air conditioner according to the present embodiment includes an indoor unit main body that sucks room air from a suction port and exchanges heat, and blows the heat exchange air into the room from the blowout port.
The indoor unit main body has a lower surface portion formed in a curved shape that curves upward from a rear side end portion toward a front side end portion.
A blow-out opening is opened at a rear side end of the lower surface portion, and an up-down air direction louver that has the same curved surface as the lower surface portion is fitted into the blow-out opening so as to be freely opened and closed.
A sensor cover having the same curved surface as that of the lower surface portion is fitted into the front side end portion of the lower surface portion, and a human sensor for detecting the presence of a resident is accommodated in the sensor cover.

The front view of the indoor unit of the air conditioner based on this embodiment. The external appearance perspective view of the state which closed the up-and-down wind direction louver of the indoor unit of the air conditioner based on the embodiment. The external appearance perspective view of the state which opened the up-and-down wind direction louver of the indoor unit of the air conditioner based on the embodiment. The longitudinal cross-sectional view of the indoor unit of the air conditioner based on the embodiment. The disassembled perspective view of the display panel part which comprises the indoor unit lower surface part of the air conditioner based on the embodiment. The attachment structure figure of a human sensitive sensor concerning the embodiment. Explanatory drawing of the human sensitive sensor based on the embodiment. Explanatory drawing of a human sensitive sensor and a baffle plate based on the embodiment.

Hereinafter, the present embodiment will be described with reference to the drawings.
FIG. 1 is a front view of an indoor unit of an air conditioner, FIG. 2 is a perspective view showing the appearance of the indoor unit in a state in which the up-and-down air direction louver is closed, and FIG. FIG. 4 is a longitudinal sectional 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. It is a so-called wall-hanging type in which the rear surface portion of the rear plate housing 2 is attached to an installation plate at a height of the indoor wall surface.

  The rear panel housing 2 constitutes the back portion of the indoor unit body 1 and is attached with components housed inside 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 the back surface is opened. The opening of the front panel 3 is fitted from the front into the rear panel housing 2 to which the components are attached, so that the indoor unit body 1 is configured.

  The upper surface portion 3 c of the front panel 3 has a curved shape that curves downward from the rear side end portion toward the front side end portion, and most of the opening portion 3 is opened to form a suction port 5. A frame-like crosspiece 6 is fitted into the suction port 5 and is partitioned into a plurality of spaces by the crosspiece 6 and is always open to the interior of the indoor unit body 1.

  The front panel 3a of the front panel 3 is a flat decorative panel that is flat and does not have any openings, and is finished very beautifully. The front decorative panel, which is the front surface portion 3a, is attached to the upper surface portion 3c through a hinge mechanism provided at the left and right upper end portions so as to be openable and closable, and can handle maintenance inside the indoor unit body 1.

  The left and right side surface portions 3b of the front panel 3 have a flat plate shape. The lower surface portion 3d of the front panel 3 has a curved surface shape that smoothly bends upward from the back side end portion a toward the near side end portion b, as shown in FIGS.

  In the lower surface portion 3d of the front panel 3, a blowout port 8 is opened over the entire length in the left-right width direction at a substantially central portion at a predetermined distance from each of the rear-side end portion a and the front-side end portion b. A first up-and-down air direction louver 9a and a second up-and-down air direction louver 9b are fitted into the outlet 8 so as to be freely opened and closed.

  The first up-and-down air direction louver 9a and the second up-and-down air direction louver 9b have the same curved surface shape along the curved surface of the lower surface portion 3d of the front panel 3 with the blowout port 8 closed. With these up-and-down wind direction louvers 9a and 9b closing the air outlet 8, there is no unevenness with respect to the curved surface shape of the lower surface portion 3d, and the beauty is maintained.

  The first up / down air direction louver 9a and the second up / down air direction louver 9b are composed of a single horizontal louver that adjusts the up / down direction of the blown air. A plurality of vertical louvers that adjust the air direction in the left-right direction of the blown air are provided in the blowout port 8.

  Further, in the space between the front side end of the outlet 8 into which the first and second up-and-down wind direction louvers 9a and 9b are fitted and the front side end b of the lower surface 3d of the front panel lower surface 3d A sensor cover 10 of the human sensor G, which will be described later, a display unit 11 for displaying an instruction signal from a remote controller (remote control panel), and a light receiving unit cover 12 for receiving the instruction signal are arranged side by side.

  By attaching such an indoor unit body 1 to the height of the wall surface of the air-conditioned room, as shown in FIGS. 2 and 3, the front unit 3a, the lower surface unit 3d, and the left and right sides excluding the upper surface 3c of the indoor unit body 1 are provided. Both side surface portions 3b fall within the field of view of the resident. In particular, since the front surface portion 3a and the lower surface portion 3d having a large area occupy most of the visual field range, it is necessary to finish it beautifully.

  Here, since the front surface portion 3a is formed of a decorative panel that is flat and does not include any accessories, the appearance is maintained. The lower surface portion 3d is provided with the sensor cover 10 of the human sensor G, the display portion 11, and the light receiving portion cover 12, all of which are formed on a curved surface along the curved surface shape of the lower surface portion 3d.

Further, a first up-and-down air direction louver 9a and a second up-and-down air direction louver 9b are attached to the outlet 8 that opens to the lower surface portion 3d so as to be openable and closable. In the closed state of each of the vertical wind direction louvers 9a, 9b, a curved surface is formed along the curved surface shape of the lower surface portion 3d.
Therefore, the soft calm shape without the unevenness | corrugation unnecessary as an external appearance of an air conditioner main body is hold | maintained. An indoor unit with high commercial value can be obtained without disturbing the indoor atmosphere.

  In particular, as shown in FIG. 4, in the indoor unit main body 1, a front heat exchanger portion 13 </ b> A that is curved in a substantially U shape in a side view, and an oblique straight rear heat exchanger portion 13 </ b> B And an indoor heat exchanger 13 formed in a substantially inverted V shape is disposed.

  Almost most of the front heat exchanger portion 13A except the upper end portion faces the front surface portion 3a of the front panel 3 with a gap. The upper end portion of the front heat exchanger portion 13 </ b> A and the rear heat exchanger portion 13 </ b> B are opposed to the upper surface suction port 5.

  An indoor fan 14 is disposed between the front and rear heat exchanger portions 13A and 13B of the indoor heat exchanger 13. The indoor blower 14 includes a fan motor supported by a support and a cross-flow fan fitted on the rotation shaft of the fan motor. The axial length of the fan motor matches the length of the indoor heat exchanger 13 in the width direction and is correctly opposed.

  The lower end portion of the front heat exchanger portion 13A is placed on the front drain pan 15a, and the lower end portion of the rear heat exchanger portion 13B is placed on the rear drain pan 15b. The front and rear drain pans 15a and 15b are integrally formed with the rear plate housing 2, receive drain water dripping from the respective heat exchanger sections 13A and 13B, and can drain the water through the drain hose. .

  The outer surfaces of the side walls of the front and rear drain pans 15a and 15b are provided close to the indoor blower 14, and these constitute a nose for the crossflow fan of the indoor blower 14. A partition wall member 16 connects the side wall portions of the front and rear drain pans 15 a and 15 b that become noses and the side portions of the outlet 8.

  A space surrounded by the partition wall member 16 becomes a blowout ventilation path 17 that communicates the nose and the blowout port 8 from the indoor blower 14 by driving the indoor blower 14. On the other hand, when the indoor blower 14 is driven, a suction ventilation path 18 extending from the suction port 5 to the indoor blower 14 via the indoor heat exchanger 13 is formed.

  A filter support frame 20 is provided between the front surface portion 3 a and the upper surface portion 3 c of the front panel 3 and the indoor heat exchanger 13. The filter support frame 20 supports the air filter 21 by moving it upward or downward. An air filter cleaning device 22 is attached to face the air filter 21 to remove and store dust accumulated in the air filter 21.

  When the operation start button provided on the remote control (remote control panel) is pressed, the light receiving element receives the signal via the light receiving unit cover 12 and controls the indoor unit of the air conditioner configured as described above. Send to department. The control unit controls to start the air conditioning operation and causes the display unit 11 to display the operation content. At the same time, a detection start command is issued to the human sensor G.

  The first and second up-and-down wind direction louvers 9a and 9b are rotationally driven to open the outlet 8. At the same time, the compressor of the outdoor unit (not shown) is driven, and the cross-flow fan of the indoor blower 14 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 13. By driving the indoor blower 14, room air is sucked into the indoor unit body 1 from the upper surface suction port 5 and guided to the suction ventilation path 18.

  The indoor air sucked into the indoor unit main body 1 flows through the air filter 21, and dust contained in the indoor air is captured. The cleaned indoor air flows through the indoor heat exchanger 13 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 17, the wind direction is deflected by the first vertical wind direction louver 9 a and the second vertical wind direction louver 9 b, and blown into the room from the blowout port 8.
At this time, on the basis of the information detected by the human sensor G, the blowing is performed by concentrating on the area where the resident is present or avoiding the area where the resident is present. In either case, setting with a remote control is possible, and comfortable air conditioning according to instructions is obtained.

FIG. 5 is an exploded perspective view of the display panel portion that forms a space portion between the front end of the outlet 8 of the lower surface portion 3d and the front end b of the lower surface portion 3d.
The display panel portion is provided with a lower surface portion cover 33d that constitutes a part of the lower surface portion 3d on the most surface side, a shielding plate 31 is provided to face the lower surface portion cover 33d, and the mounting substrate 35 on the innermost side. Is provided.

  The lower surface portion cover 33d is made of a translucent material, and is formed on the same curved surface as that of the lower surface portion 3d from constituting a part of the lower surface portion 3d. Cover openings d and e are provided at substantially the center and right side of the lower surface cover 33d.

  The sensor cover 10 is fitted into the cover opening d at the substantially central portion, and the light receiving section cover 12 is fitted into the cover opening e at the right side portion. Since the sensor cover 10 and the light receiving unit cover 12 respectively constitute a part of the lower surface portion 3d, they are formed on the same curved surface as the lower surface portion 3d.

  In the lower surface cover 33d, the shielding plate 31 and the mounting substrate 35 are provided in a state of being integrally overlapped. Between the shielding plate 31 and the mounting substrate 35, the two human sensors G and the supporting substrate 10A, the display unit structure 11A, and the light receiving element 12A are sandwiched and fixed.

  11 A of display part structures are equipped with LED etc., and this luminescent character permeate | transmits the lower surface part cover 33d, and becomes the display part 11 formed in the lower surface part 3d. The instruction signal from the remote controller is transmitted through the light receiving unit cover 12 and transmitted to the receiving control unit by the light receiving element 12A.

FIG. 6 is an attachment structure diagram of the human sensor G with the sensor cover 10 removed and the shielding plate 31 exposed.
Two human sensors G are attached with a predetermined distance therebetween, and the opening 30 of the shielding plate 31 is located on the front surface thereof. And the baffle plate 32 is provided in the position over the mutual human sensor G of the opening part 30, and a part of mutual human sensor G is shielded.

The area of the opening 30 decreases as the distance from the baffle plate 32 increases, and the opening 30 is narrowest at the side end. Actually, the detection light of the human sensor G is irradiated in an enlarged state from the sensor cover 10 through the opening 30 of the shielding plate 31, and this irradiation detection range extends from the proximity portion to the side end portion. The opening 30 is provided so as to be in a substantially uniform state.
The reason why the baffle plate 32 is attached to the opening 30 will be described later.

FIG. 7A is a front view of mounting the human sensor G. FIG. FIG. 7B is an attachment side view of the human sensor G. FIG.
The human sensor G is formed by mounting a pyroelectric infrared sensor on a sensor substrate and attaching it to a pedestal 33. The infrared sensor is covered with a Fresnel lens, has a smooth light receiving surface, and the direction facing the light receiving surface is the main detection direction. The central axis from the center of the light receiving surface toward the main detection direction is the direction with the best detection sensitivity, and a detection range with good detection sensitivity extends around it.

As shown in FIG. 7A, the center axis of each human sensor G has an expansion angle facing the pedestal 33 in different directions on the left and right sides, and here the mutual expansion angle was set to approximately 60 °. Naturally, since the main detection direction is different, a wide-angle detection range can be obtained.
As shown in FIG. 7B, each human sensor G is mounted on the pedestal 33 with a depression angle E, and most of the indoor floor surface can be accommodated within the visual field range. Here, the depression angle was set to approximately 35 °.

Ordinarily, a resident cannot physically stay stationary when awakening other than in a sleep state, and moves a part of the body such as hands, legs, and face consciously or unconsciously within a short time. . The human sensor G detects this movement and outputs a signal to the control unit.
The control unit receives the detection signal and performs arithmetic control, compares the calorific value dissipated from the resident with the calorific value around the resident, and detects the presence of the resident. In accordance with the result of the arithmetic processing, the air conditioner capacity, the wind direction from the outlet 8, and the like are controlled.

FIG. 8 is an explanatory diagram showing a detection region of the human sensor G.
The detection light beam is irradiated from the human sensor G1 on the left side (hereinafter referred to as “first”) within a predetermined angle θ, and the person on the right side (hereinafter referred to as “second”). A detection light beam is emitted within a predetermined range from the sensitive sensor G2.

  The detection light irradiation range related to the first human sensor G1 is “detection area A”, and the detection light irradiation range related to the second human detection sensor is “detection area B”. As described above, the human sensors G1 and G2 are attached to the sensor substrate with a predetermined spread angle, but each irradiation angle θ is set large because it is necessary to irradiate and detect the interior of the room.

  Needless to say, there is a range in which the detection light beam emitted from the first human sensor G1 and the detection light beam emitted from the second human sensor G2 overlap. For example, the resident may move from the detection area A to a region where the detection light beams of the first and second human sensors G1 and G2 overlap and return to the detection area A or move to the detection area B in some cases.

If the resident is present in the region where the detection light beams of the first and second human sensors G1 and G2 overlap, detection signals will be output from the human sensors G1 and G2 during that period, and this will cause confusion. Invite.
Therefore, the above-described baffle plate 32 is provided in a portion where the detection light beams of the first and second human sensors G1 and G2 overlap to shield the irradiation, and the shielded portion is recognized as the “unconfused zone Z”.

Thereby, for example, the recognition that the resident moves from the detection area A to the insensitive area Z, or moves from the detection area B to the insensitive area Z, or moves from the insensitive area Z to the detection area A or the detecting area B. Clarification and almost no room for control errors.
It is an indoor unit of an air conditioner provided with such human sensors G1, G2, and can improve usability.

  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.

  DESCRIPTION OF SYMBOLS 13 ... Heat exchanger, 14 ... Air blower, 8 ... Air inlet, 6 ... Air outlet, 1 ... Indoor unit main body, 3d ... Lower surface part, 9a, 9b ... 1st, 2nd up-down wind direction louver, G ... Human sensor DESCRIPTION OF SYMBOLS 10 ... Sensor cover, 11 ... Display part, 12 ... Light-receiving part cover, 32 ... Baffle plate, Z ... Unstable area.

Claims (3)

It is equipped with an indoor unit 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.
The indoor unit main body has a lower surface portion formed in a curved shape that curves upward from a rear side end portion toward a front side end portion,
The blowout port is opened at the rear side end of the lower surface portion, and the vertical airflow direction louver that forms the same curved surface as the lower surface portion is fitted into the blowout port so as to be freely opened and closed.
A sensor cover having the same curved surface as the lower surface portion is fitted into the front end portion of the lower surface portion,
An indoor unit of an air conditioner, wherein a human sensor for detecting the presence of a resident is attached in the sensor cover. A light receiving unit cover for receiving radio waves from a display unit and a remote control (remote control panel), which has the same curved surface as the lower surface part, is provided in parallel to a side portion of the sensor cover that is fitted into the lower surface part of the indoor unit body. The indoor unit of an air conditioner according to claim 1, wherein the indoor unit is an air conditioner. The human sensor is mounted in two with a predetermined interval, and has a predetermined divergence angle and the same depression angle,
2. The indoor unit of an air conditioner according to claim 1, wherein a baffle plate is arranged at a spread angle portion intersecting with each other to form a dead zone.

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