JP7170896B2 - indoor unit of air conditioner - Google Patents

Description

TECHNICAL FIELD The present invention relates to an indoor unit of an air conditioner, and more particularly to a support structure for a panel of the indoor unit.

2. Description of the Related Art Conventionally, indoor units of air conditioners are known that include a rear base and a front panel that form an outer shell. The rear base is provided with a heat exchanger, an electrical box, a blower unit, and a drain pan. The front panel is detachably attached to the front side of the rear base. Patent Literature 1 describes an air conditioner that includes a frame that is a front panel and a substrate that is a rear base. In the air conditioner of Patent Document 1, the frame is attached to the base by engaging the frame-side claws with the base-side claws, and the engagement state between the frame-side claws and the base-side claws is released. By doing so, the frame is detached from the base.

JP 2015-206546 A

In recent years, in order to improve the accuracy of air-conditioning control, there are indoor units equipped with information acquiring means for acquiring information of an air-conditioned space used for air-conditioning control. As means for acquiring information on the air-conditioned space, for example, there are heat source detection means such as an infrared sensor and imaging means. The temperature of the wall surface and the floor surface of the air-conditioned space, the temperature of a person staying in the air-conditioned space, and the like are acquired by the heat source detection means. Information such as the positions of furniture and the like arranged in the air-conditioned space and the positions of people staying in the air-conditioned space are acquired by the imaging means. By performing air conditioning control based on these temperature information and position information, more accurate air conditioning control is realized.

Such information acquiring means is arranged in a state of protruding from the front panel so that the information to be acquired is not affected by other components of the indoor unit. Specifically, the heat source detection means and the imaging means are provided in a state of protruding from the front panel so that other components of the indoor unit do not enter the angles of view of the heat source detection means and the imaging means. This is because if the amount of protrusion of the information acquisition means is insufficient, the accuracy of the acquired information of the air-conditioned space will be reduced, and as a result, the accuracy of the air-conditioning control by the indoor units will be reduced.

However, if the information acquisition means is provided so as to protrude from the front panel, the projecting portion of the information acquisition means will get caught on the front panel when the front panel is attached to or detached from the rear base. Therefore, if the information acquisition means protrudes from the front panel, the front panel cannot be smoothly attached to and detached from the rear base. That is, there is a problem that it is difficult to achieve both the accuracy of air conditioning control and the ease of attachment and detachment of the front panel.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an indoor unit of an air conditioner that achieves both the accuracy of air conditioning control and the ease of attachment and detachment of the front panel. and

An indoor unit of an air conditioner according to the present invention is configured to be detachably attached to a rear base and a front surface of the rear base. A front panel in which a panel hole is formed, information acquisition means for acquiring information of an air-conditioned space used for air conditioning control, and holding means for holding the information acquisition means, wherein the front panel is attached to the rear base. In the attached state, the information acquisition means is positioned below the upper edge of the panel hole in the vertical direction and is positioned on the front side of the lower edge of the panel hole in the front-rear direction, holding means protruding from the panel hole; at least one rear base side engaging portion provided on the upper portion of the rear base; and the rear base side engaging portion provided on the upper portion of the front panel. and at least one front panel side engaging portion that can be engaged with the front panel, wherein the rear base side engaging portion is a protrusion projecting downward, and the front panel The side engaging portion has a claw protruding upward, and in the attached state, the claw is positioned on the rear side of the projection and engages with the projection, and when the rear base is removed from the rear base, the claw is engaged with the projection. A straight line connecting the abutting portion of the holding means with which the lower edge of the panel hole abuts when the front panel is pulled to the front side and the abutting portion between the claw and the protrusion in the attached state. A claw engaging surface of the claw facing the protrusion is inclined in parallel with a straight line projected onto a virtual plane parallel to the longitudinal direction of the indoor unit .
Further, the indoor unit of an air conditioner according to the present invention is configured to be detachably attached to a rear base and a front surface of the rear base, the lower part of which is inclined upward from the rear side to the front side, and the a front panel having a panel hole formed in a lower portion thereof; information acquisition means for acquiring information of an air-conditioned space used for air conditioning control; and holding means for holding the information acquisition means, wherein the front panel is the rear surface. In the mounting state where it is attached to the base, the information acquisition means is positioned below the upper edge of the panel hole in the vertical direction and is positioned on the front side of the lower edge of the panel hole in the front-rear direction. holding means protruding from the panel hole; at least one rear base side engaging portion provided on the upper portion of the rear base; and the rear base side engaging portion provided on the upper portion of the front panel. and at least one front panel side engaging portion that can be engaged with the joint portion, wherein the rear base side engaging portion is a protrusion projecting downward, and the front surface The panel-side engaging portion has a claw projecting upward, and in the attached state, the claw is located on the rear side of the projection and engages with the projection, facing the projection. The claw engaging surface of the claw is inclined upward from the front side to the rear side, and the lower edge of the panel hole is pulled forward when the front panel is removed from the rear base. is projected onto a virtual plane parallel to the front-rear direction of the indoor unit. On the other hand, the claw engaging surface is inclined toward the rear side.

According to the air conditioner indoor unit of the present invention, the holding means for holding the information acquisition means is provided so as to protrude from the panel hole formed in the lower portion of the front panel. Therefore, a decrease in the accuracy of acquiring information on the air-conditioned space is suppressed, and the accuracy of the air-conditioning control of the indoor unit is ensured. Further, in the attached state where the front panel is attached to the back base, the hook engaging surface of the hook facing the protrusion is inclined upward from the front side to the back side. Therefore, when the front panel is pulled forward to be removed from the rear base, the claws are not obstructed by the protrusions, and the front panel side engaging portions are prevented from receiving reaction force from the rear base side engaging portions. be. Therefore, it is possible to ensure the accuracy of air-conditioning control and to facilitate attachment and detachment of the front panel.

1 is a perspective view of an indoor unit of an air conditioner according to an embodiment; FIG. 1 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment; FIG. Fig. 3 is a front view of the rear base of the indoor unit of the air conditioner according to the embodiment; 4 is a cross-sectional view of the upper portion of the rear base according to the embodiment; FIG. Fig. 3 is a perspective view of the front panel of the indoor unit of the air conditioner according to the embodiment; Fig. 2 is a front view of the front panel of the indoor unit of the air conditioner according to the embodiment; Fig. 3 is a plan view of the front panel of the indoor unit of the air conditioner according to the embodiment; 4 is a cross-sectional view of the upper portion of the front panel according to the embodiment; FIG. FIG. 4 is a cross-sectional view showing an engagement relationship between a rear base side engaging portion and a front panel side engaging portion; FIG. 4 is a cross-sectional view showing heat source detection means, a front panel, and a rear base in the embodiment; It is a figure which shows the indoor unit of the air conditioner which concerns on embodiment from right side. It is a figure which shows the relationship between the front panel side engaging part and the arrangement position of a heat-source detection means.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an indoor unit for an air conditioner according to the present invention will be described below with reference to the drawings. The present invention is not limited to the following embodiments, and various modifications can be made without departing from the gist of the present invention. In addition, the present invention includes all possible combinations of the configurations shown in the following embodiments. Further, the indoor unit of the air conditioner shown in the drawings is an example of equipment to which the indoor unit of the air conditioner of the present invention is applied. The indoor unit of the air conditioner is not limited. Also, in the following description, terms representing directions (for example, "up", "down", "right", "left", "front", "back", etc.) are used as appropriate for ease of understanding. They are for illustrative purposes and are not intended to limit the invention. Also, in each figure, the same reference numerals denote the same or corresponding parts, which are common throughout the specification. In each drawing, the relative dimensional relationship, shape, etc. of each component may differ from the actual one.

Embodiment.
FIG. 1 is a perspective view of an indoor unit of an air conditioner according to an embodiment. FIG. 2 is a cross-sectional view of the indoor unit of the air conditioner according to the embodiment. FIG. 2 cuts the indoor unit 1 at the center position in the left-right direction and shows it from the right side. That is, the left side in FIG. 2 is the front side of the indoor unit 1 of the air conditioner, and the right side is the rear side of the indoor unit 1 . The indoor unit 1 includes a rear base 10, a front panel 20, a design panel 30, heat source detection means 40, and an electrical component box (not shown).

The front panel 20 is arranged on the front surface of the rear base 10 . The front panel 20 is molded from a flexible material. An upper portion 21 of the front panel 20 is formed with a suction port 22 in which a plurality of rectangular openings are arranged. In this specification, the front side and the rear side of the front panel 20 refer to the directions when the front panel 20 is attached to the rear base 10 . That is, the front side of the front panel 20 matches the front sides of the indoor unit 1 and the rear base 10 , and the rear side of the front panel 20 matches the rear sides of the indoor unit 1 and the rear base 10 .

The heat source detection means 40 is arranged at the right end on the front side of the indoor unit 1 . The heat source detection means 40 is for detecting the temperature of the heat source in the room, which is the space to be air-conditioned. The heat source detection means 40 detects the temperature of the wall surface and floor surface of the air-conditioned space and the temperature of a person staying in the air-conditioned space. That is, the heat source detection means 40 is an information acquisition means for acquiring information used for air conditioning control of the air-conditioned space in which the indoor unit 1 is installed.

In the following description, left and right refer to left and right when the indoor unit 1 is viewed from the front side.

As shown in FIG. 2 , the indoor unit 1 has a heat exchanger 50 , a blower fan 60 , a drain pan 70 and a wind direction adjusting plate 80 . The heat exchanger 50 , the blower fan 60 and the drain pan 70 are attached to the rear base 10 . The heat exchanger 50 functions as an evaporator during cooling and as a condenser during heating. The blower fan 60 is arranged downstream of the airflow flowing through the heat exchanger 50 . The drain pan 70 is for receiving condensed water generated in the heat exchanger 50 and is arranged below the heat exchanger 50 .

<Rear base side engaging part>
FIG. 3 is a front view of the rear base of the indoor unit of the air conditioner according to the embodiment. A plurality of rear base side engaging portions 100 are provided on the upper portion of the rear base 10 . In this embodiment, four rear base side engaging portions 100 are provided. Two rear base side engaging portions 100 are provided on the right side and two on the left side of the central portion of the rear base 10 in the left-right direction. The rear base side engaging portion 100 has a predetermined width in the left-right direction. The rear base side engaging portion 100 is formed by molding a flexible material.

FIG. 4 is a cross-sectional view of the upper portion of the rear base according to the embodiment. FIG. 4 shows the upper part of the cross section of the rear base 10 taken along the line AA in FIG. 3 from the direction of the arrow. In FIG. 4 , the left side is the front side of the indoor unit 1 and the right side is the rear side of the indoor unit 1 . The rear base side engaging portion 100 is a projection that protrudes downward from the plate-like upper surface 10A of the rear base 10 . The rear base side engaging portion 100 has a trapezoidal cross-sectional shape. The rear base side engaging portion 100 has a protrusion guide surface 101 , a protrusion engaging surface 102 and a connection surface 103 . The protrusion guide surface 101 is a surface located on the front side of the rear base 10 , is inclined downward from the front side to the rear side, and is continuous with the connection surface 103 . In other words, the protrusion guide surface 101 is inclined upward from the connection surface 103 toward the front side of the rear base 10 . In this embodiment, the angle formed by the protrusion guide surface 101 and the upper surface 10A is approximately 135°. The protrusion engagement surface 102 is a surface located on the rear side of the rear base 10 , extends vertically downward from the upper surface 10</b>A, and is continuous with the connection surface 103 . The connection surface 103 is a surface that connects the protrusion guide surface 101 and the protrusion engagement surface 102, and extends parallel to the upper surface 10A.

<Front panel side engaging part>
FIG. 5 is a perspective view of the front panel of the indoor unit of the air conditioner according to the embodiment. FIG. 6 is a front view of the front panel of the indoor unit of the air conditioner according to the embodiment. FIG. 7 is a plan view of the front panel of the indoor unit of the air conditioner according to the embodiment. An upper portion 21 of the front panel 20 is provided with a plurality of front panel side engaging portions 200 . In this embodiment, four front panel side engaging portions 200 are provided. The front panel side engaging portion 200 is provided on the side portion 23 on the back side of the upper portion 21 . Two front-panel-side engaging portions 200 are provided on the right side and two on the left side of the front panel 20 across the central portion in the left-right direction. As shown in FIGS. 5 and 7, the front panel side engaging portion 200 has a predetermined width in the left-right direction. The front panel side engaging portion 200 is formed by molding a flexible material.

FIG. 8 is a cross-sectional view of the upper portion of the front panel according to the embodiment. FIG. 8 shows the upper part of the cross section of the front panel 20 taken along the line BB in FIG. 6 from the direction of the arrow. In the horizontal direction of the indoor unit 1, the position of line BB in FIG. 6 coincides with the position of line CC in FIG. That is, the line BB is positioned at the center of the front panel side engaging portion 200 in the left and right direction. In FIG. 8, the left side is the front side and the right side is the back side. The front panel side engaging portion 200 has a plate-like main body 201 and claws 202 projecting outward from the side portion 23 on the back side to the back side. The claw 202 protrudes upward from the main body 201 . The pawl 202 has a pawl guide surface 203 and a pawl engaging surface 204 .

The pawl guide surface 203 is formed on the rearmost side of the pawl 202 . That is, the pawl guide surface 203 is formed at a position farthest from the side portion 23 . The claw guide surface 203 is inclined downward from the front side toward the back side. In this embodiment, the angle between the claw guide surface 203 and the main body 201 is approximately 45°. The claw engaging surface 204 is slanted upward from the front side toward the back side. The angle formed by the claw engaging surface 204 and the main body 201 will be described later. The edge of the claw guide surface 203 on the front side and the edge of the claw engaging surface 204 on the back side are continuous. That is, the claw guide surface 203 and the claw engaging surface 204 form the claw 202 projecting upward.

The connecting surface 205 extends substantially parallel to the upper portion 21 of the front panel 20 . The edge of the claw engaging surface 204 on the front side and the edge of the connection surface 205 on the back side are continuous. The inclined surface 206 is inclined downward from the front side to the rear side. In this embodiment, the angle formed by the inclined surface 206 and the main body 201 is approximately 45°. The edge of the connecting surface 205 on the front side and the edge of the inclined surface 206 on the back side are continuous. That is, the claw engaging surface 204, the connecting surface 205, and the inclined surface 206 form a valley portion 201A.

<Engagement Relationship Between Rear Base Side Engagement Portion and Front Panel Side Engagement Portion>
FIG. 9 is a cross-sectional view showing the engagement relationship between the rear base side engaging portion and the front panel side engaging portion. FIG. 9 shows the attached structure, in which the front panel 20 is attached to the rear base 10, cut at the same position as the line BB in FIG. 6 and viewed from the right. The front panel side engaging portion 200 of the front panel 20 is positioned below the rear base side engaging portion 100 of the rear base 10 and positioned in the valley portion 201A of the rear base side engaging portion 100 . The lower edge of the claw engaging surface 204 of the claw 202 of the front panel side engaging portion 200 and the lower edge of the protrusion engaging surface 102 of the rear base side engaging portion 100 are in contact with each other. As a result, the front panel side engaging portion 200 and the rear base side engaging portion 100 are engaged in the longitudinal direction of the indoor unit 1 . The front panel 20 is supported in the vertical direction of the indoor unit 1 by a support mechanism (not shown) of the rear base 10 .

<Heat source detection means>
FIG. 10 is a cross-sectional view showing heat source detection means, a front panel, and a rear base in the embodiment. FIG. 10 shows the indoor unit 1 cut along the front-rear direction at substantially the center of the heat source detection means 40 and viewed from the right. The heat source detection means 40 has a sensor portion 41 and a holding means 42 . The sensor section 41 has an infrared sensor 43 and a cylindrical sensor support cylinder 44 . The infrared sensor 43 is supported inside the sensor support cylinder 44 . The infrared sensor 43 is for acquiring information about the heat source of the air-conditioned space in which the indoor unit 1 is installed. The holding means 42 is a substantially cylindrical member, the outer diameter of which gradually decreases from the top to the bottom. The outer diameter of the retaining means 42 is on average about 20 mm (millimeters). The sensor section 41 is held inside the holding means 42 . An opening 42A is formed in the lower portion of the holding means 42. As shown in FIG. The sensor section 41 is held inside the holding means 42 so that the infrared sensor 43 is positioned near the opening 42A. The infrared sensor 43 detects the heat source in the air-conditioned space through the opening 42A. The holding means 42 of the heat source detection means 40 is supported by the rear base 10 so as to be rotatable about a vertically extending shaft. Rotational motion of a motor 45 provided on the rear base 10 is transmitted to the holding means 42 via a power transmission mechanism 46 such as gears. As the motor 45 rotates, the holding means 42 rotates horizontally.

A lower portion 25 of the front panel 20 slopes upward toward the front. A panel hole 24 is formed in the lower portion 25 . The panel hole 24 has a substantially circular shape when viewed from the front as shown in FIG. The holding means 42 is provided on the rear base 10 so as to protrude downward from the panel hole 24 . The amount of protrusion of the holding means 42 is set so that other structures of the indoor unit 1 do not enter the angle of view of the infrared sensor 43 described above. That is, the holding means 42 is supported by the support member 11 and the support member 12 on the rear base 10 as follows. The infrared sensor 43 and the opening 42A are positioned below the upper edge 24A of the panel hole 24 in the up-down direction of the indoor unit 1, and below the lower edge 24B of the panel hole 24 in the front-rear direction of the indoor unit 1. The holding means 42 is positioned so as to be positioned closer to the front side than the .

Therefore, when the holding means 42 rotates in the horizontal direction and the infrared sensor 43 detects the heat source in the air-conditioned space, other structures of the indoor unit 1 enter the angle of view of the infrared sensor 43 and the infrared sensor 43 detects the heat source. Reduction in detection accuracy is suppressed. As a result, the accuracy of air conditioning control by the indoor unit 1 based on the detection result of the heat source detection means 40 is ensured.

Further, the heat source detection means 40 is configured such that the lower edge portion 24B of the panel hole 24 contacts the front edge portion of the bottom surface 42B of the holding means 42 when the front panel 20 is displaced to the front side. The bottom surface 42B of the holding means 42 is inclined downward from the rear surface side to the front surface side, and in the vertical direction of the indoor unit 1, the edge portion of the front surface side of the bottom surface 42B is approximately the lower edge portion 24B of the panel hole 24. located in the same position.

Moreover, the holding means 42 is supported by the support members 11 and 12 so that the position of the holding means 42 is not displaced in the vertical direction and the front-rear direction of the indoor unit 1 even if it receives an external force.

FIG. 11 is a right side view of the indoor unit of the air conditioner according to the embodiment. In FIG. 11, the upper portion on the back side and the lower portion on the front side of the indoor unit 1 are shown in cross section. The cross section at the upper part of the back side is a cross section at the same position as the cross section shown in FIG. The cross section at the lower part of the front side is the cross section at the same position as the cross section shown in FIG. A straight line L1 in FIG. 11 is a portion where the lower edge of the claw engaging surface 204 and the lower edge of the protrusion engaging surface 102 are in contact with each other, and the front side of the bottom surface 42B of the holding means 42 of the heat source detecting means 40. is a straight line obtained by projecting a straight line connecting the edges of the indoor unit 1 onto a virtual plane parallel to the front-rear direction of the indoor unit 1 . As described above, in this embodiment, when the front panel 20 is displaced to the front side, the heat source is detected so that the lower edge portion 24B of the panel hole 24 contacts the front edge portion of the bottom surface 42B of the holding means 42 . The means 40 are constructed. That is, the straight line L1 in FIG. 11 is the contact portion of the bottom surface 42B with which the lower edge 24B contacts when the front panel 20 is removed, the lower edge of the claw engaging surface 204, and the lower edge of the protrusion engaging surface 102. is a straight line obtained by projecting a straight line connecting the portion where the a is in contact with the aforesaid imaginary plane. In this embodiment, the length of straight line L1 is approximately 300 to 400 mm.

<Relationship Between Engaging Portion and Holding Means>
FIG. 12 is a diagram showing the relationship between the front panel side engaging portion and the arrangement position of the heat source detection means. A straight line L2 is a straight line obtained by projecting a surface obtained by extending the claw engaging surface 204 of the claw 202 from the lower edge toward the lower portion of the indoor unit 1 onto a virtual plane perpendicular to the horizontal direction of the indoor unit 1 . As shown in FIG. 12, straight line L2 is parallel to straight line L1. That is, the pawl engaging surface 204 is inclined so as to be parallel to the straight line L1. Incidentally, the pawl engaging surface 204 does not necessarily have to be strictly parallel to the straight line L1. The claw engaging surface 204 may be inclined so that the angle formed by the claw engaging surface 204 and the main body 201 is not smaller than the angle formed by the straight line L1 and the main body 201 . In other words, the claw engaging surface 204 may be inclined toward the rear side with respect to the straight line L1.

<Detachment of front panel 20>
Here, attachment and detachment of the front panel 20 with respect to the rear base 10 will be described. When removing the front panel 20 from the rear base 10, if the front panel 20 is pulled from the state shown in FIG. do. As described above, in this embodiment, when the front panel 20 is displaced to the front side, the heat source is arranged such that the lower edge 24B of the panel hole 24 abuts the front edge of the bottom surface 42B of the holding means 42 . The detection means 40 is constructed. Therefore, when the front panel 20 is further pulled to the front side, the lower edge 24B abuts on the front side edge of the bottom surface 42B of the holding means 42, as indicated by the chain double-dashed line in FIG. receive. As a result, the flexible front panel 20 is pushed back downward. Furthermore, when the front panel 20 is pulled to the front side, a downward resultant force P2 is generated along the straight line L1. As described above, the inclination angle of the claw engaging surface 204 of the claw 202 is the same as the inclination angle of the straight line L1. Therefore, even if a downward resultant force P2 is generated along the straight line L1, the pawl engaging surface 204 of the pawl 202 does not receive a reaction force from the rear base side engaging portion 100. FIG. As a result, the front panel 20 is pushed downward by the holding means 42, the claw 202 is also displaced downward, and the engagement relationship between the front panel side engaging portion 200 and the rear base side engaging portion 100 is released.

When attaching the front panel 20 to the rear base 10, as indicated by arrow D in FIG. The protrusion guide surface 101 of the joining portion 100 is brought into contact. Then, a pressing force is applied in the direction of the arrow D to the front panel 20 . As described above, the angle between the claw guide surface 203 and the main body 201 is approximately 45°, and the angle between the protrusion guide surface 101 and the upper surface 10A is both approximately 135°. Therefore, when a pressing force is applied to the front panel 20 in the direction of the arrow D while the claw guide surface 203 is in contact with the projection guide surface 101, the claw guide surface 203 slides on the projection guide surface 101. The front panel side engaging portion 200 is further displaced toward the rear side while bending downward. As a result, the claw 202 climbs over the rear base side engaging portion 100 and moves to the rear side of the rear base side engaging portion 100, the front panel side engaging portion 200 engages with the rear base side engaging portion 100, and A front panel 20 is attached to the rear base 10 .

In the present embodiment, the rear base side engaging portion 100 and the front panel side engaging portion 200 provided at the right end were explained as an example, but the other three shown in FIGS. The rear base side engaging portion 100 and the front panel side engaging portion 200 also have the same configuration.

As described above, in the present embodiment, the amount of protrusion of the heat source detection means 40 is set so that other structures of the indoor unit 1 do not enter the angle of view of the infrared sensor 43 . Therefore, deterioration in the accuracy of heat source detection of the air-conditioned space by the infrared sensor 43 is suppressed, and the accuracy of the air-conditioning control of the indoor unit 1 is ensured. A claw engaging surface 204 of the claw 202 of the front panel side engaging portion 200 is inclined upward from the front side toward the back side. Therefore, when the front panel 20 is pulled forward to be removed from the rear base 10 , the claws 202 are prevented from receiving reaction force from the rear base side engaging portions 100 . Therefore, according to the present embodiment, it is possible to ensure the accuracy of the air conditioning control of the indoor unit 1 and to easily attach and detach the front panel 20 .

When the operator pulls out the front panel 20 to the front side during the removal work of the front panel 20, the lower edge 24B of the panel hole 24 may be the bottom surface of the holding means 42 depending on the magnitude and direction of the force applied by the operator. There is a case where the back side is contacted rather than the front side edge of 42B. In this embodiment, the length of the straight line L1 shown in FIG. 11 is about 300-400 mm, while the average outer diameter of the holding means 42 is about 20 mm as described above. Therefore, even if the lower edge portion 24B contacts the rear surface side of the bottom surface 42B of the holding means 42 rather than the front surface side edge portion, the protrusion engaging surface 102 of the rear base side engaging portion 100 and the pawl engaging surface of the pawl 202 can be separated from each other. The reaction force generated on 204 is minute. As a result, there is no effect on releasing the engagement relationship between the front panel side engaging portion 200 and the rear base side engaging portion 100 .

In order to prevent the lower edge 24B of the panel hole 24 from colliding with the holding means 42 of the heat source detection means 40 when removing the front panel 20 from the rear base 10, making smooth removal of the front panel 20 difficult, The following measures can be considered.

A first measure is to configure only the portion where the panel hole 24 is formed with a member separate from the front panel 20 and detachable from the front panel 20 . Before detaching the front panel 20 from the rear base 10 , the member is removed to avoid the front panel 20 colliding with the holding means 42 . However, the first measure causes an increase in the number of parts, an increase in assembly cost of the front panel 20, and a deterioration in design due to a part dividing line around the panel hole 24 of the front panel 20. In contrast, according to the present embodiment, there is no need to provide a special member for avoiding collision of the front panel 20 with the holding means 42 . Therefore, according to the present embodiment, the accuracy of air conditioning control is ensured by maintaining the detection accuracy of the heat source detection means 40 without increasing the number of parts, increasing the assembly cost, and degrading the design of the front panel 20. , and the ease of attachment and detachment of the front panel 20 can be realized.

A second measure is to make the infrared sensor 43 vertically movable in the heat source detection means 40 . When the operation of the indoor unit 1 is stopped, the infrared sensor 43 is prevented from protruding from the surface of the front panel 20.例文帳に追加However, even in the second measure, a part for vertically movably supporting the infrared sensor 43 is required, resulting in an increase in the number of parts and an increase in the assembly cost. In addition, since a space must be secured inside the indoor unit 1 to accommodate a mechanism for vertically driving the infrared sensor 43, the size of the indoor unit 1 is increased. However, according to this embodiment, there is no need to provide a mechanism for driving the infrared sensor 43 in the vertical direction. Therefore, according to the present embodiment, the accuracy of air conditioning control can be ensured by maintaining the detection accuracy of the heat source detection means 40 without increasing the number of parts, increasing the assembly cost, and increasing the size of the indoor unit 1. The easiness of attachment and detachment of the front panel 20 can be realized.

A third measure is to remove the front panel 20 from the rear base 10 by disengaging the upper part first and then sliding the front panel 20 downward on the front side so that the front panel 20 is attached to the holding means 42. avoid collisions. However, according to the third measure, when the indoor unit 1 is installed in the upper part of the room and the distance between the indoor unit 1 and the ceiling is narrow, it becomes difficult to release the engagement of the upper part. Therefore, according to the third measure, the installation location of the indoor unit 1 may be restricted. In contrast, according to the present embodiment, the engagement between the rear base side engaging portion 100 and the front panel side engaging portion 200 is released by pulling the front panel 20 forward. Therefore, the installation location of the indoor unit 1 is not restricted.

In this embodiment, when the front panel 20 is displaced to the front side, the heat source detection means 40 is arranged such that the lower edge portion 24B of the panel hole 24 contacts the front edge portion of the bottom surface 42B of the holding means 42. It is configured. In addition, the bottom surface 42B of the holding means 42 is inclined downward from the rear surface side to the front surface side, and in the up-down direction of the indoor unit 1, the front edge portion of the bottom surface 42B is aligned with the lower edge portion 24B of the panel hole 24. located at approximately the same position. However, the configuration of the heat source detection means 40 is not limited to this. It may be configured such that when the front panel 20 is displaced to the front side, the lower edge 24B of the panel hole 24 contacts an arbitrary position of the bottom surface 42B of the holding means 42 .

In addition, in the present embodiment, the heat source detection means 40 including the infrared sensor 43 has been described as an example of the information acquisition means of the air-conditioned space, but the information acquisition means is not limited to this. An imaging device such as a camera that takes an image of an object and a person in the air-conditioned section and obtains position information may be provided as the information obtaining device.

Further, in the present embodiment, four front panel side engaging portions 200 and four rear base side engaging portions 100 are provided, but the present invention is not limited to this. The number of these engaging portions is appropriately determined according to the size of the indoor unit 1, the rigidity of the rear base 10 and the front panel 20, and the like.

1 indoor unit, 10 rear base, 10A upper surface, 11 support member, 12 support member, 20 front panel, 21 upper portion, 22 suction port, 23 side portion, 24 panel hole, 24A upper edge portion, 24B lower edge portion, 25 lower portion , 30 design panel, 40 heat source detection means, 41 sensor section, 42 holding means, 42A opening, 42B bottom surface, 43 infrared sensor, 44 sensor support tube, 45 motor, 46 power transmission mechanism, 50 heat exchanger, 60 blower fan , 70 drain pan 80 wind direction adjusting plate 100 rear base side engaging portion 101 projection guide surface 102 projection portion engaging surface 103 connection surface 200 front panel side engaging portion 201 main body 201A valley portion 202 Claw 203 Claw guide surface 204 Claw engagement surface 205 Connection surface 206 Inclined surface P1 Reaction force P2 Resultant force.

Claims (6)

back base and
a front panel configured to be detachably attached to the front surface of the rear base, having a lower portion inclined upward from the rear surface side to the front surface side, and having a panel hole formed in the lower portion;
an information acquiring means for acquiring information of an air-conditioned space used for air-conditioning control;
holding means for holding the information acquisition means,
In a mounted state in which the front panel is mounted on the rear base, the information acquisition means is positioned below the upper edge of the panel hole in the vertical direction and is positioned below the lower edge of the panel hole in the front-rear direction. holding means protruding from the panel hole so as to be positioned on the front side of the
at least one rear base side engaging portion provided on the upper portion of the rear base;
At least one front panel side engaging portion provided on the upper portion of the front panel and capable of engaging with the rear base side engaging portion, the indoor unit of an air conditioner comprising:
The rear base side engaging portion is a projecting portion projecting downward,
The front panel side engaging portion has a claw protruding upward,
In the attached state, the claw is positioned on the rear side of the protrusion and is engaged with the protrusion,
A contact portion of the holding means against which the lower edge of the panel hole abuts when the front panel is pulled forward when the front panel is removed from the back base, and a contact portion between the claw and the protrusion in the attached state. and is projected onto a virtual plane parallel to the front-rear direction of the indoor unit, and the claw engaging surface of the claw facing the protrusion is inclined parallel to the straight line. indoor unit. back base and
a front panel configured to be detachably attached to the front surface of the rear base, having a lower portion inclined upward from the rear surface side to the front surface side, and having a panel hole formed in the lower portion;
an information acquiring means for acquiring information of an air-conditioned space used for air-conditioning control;
holding means for holding the information acquisition means,
In a mounted state in which the front panel is mounted on the rear base, the information acquisition means is positioned below the upper edge of the panel hole in the vertical direction and is positioned below the lower edge of the panel hole in the front-rear direction. holding means protruding from the panel hole so as to be positioned on the front side of the
at least one rear base side engaging portion provided on the upper portion of the rear base;
At least one front panel side engaging portion provided on the upper portion of the front panel and capable of engaging with the rear base side engaging portion, the indoor unit of an air conditioner comprising:
The rear base side engaging portion is a projecting portion projecting downward,
The front panel side engaging portion has a claw protruding upward,
In the attached state, the claw is positioned on the rear side of the protrusion and is engaged with the protrusion,
The claw engaging surface of the claw facing the protrusion is inclined upward from the front side toward the back side,
A contact portion of the holding means against which the lower edge of the panel hole abuts when the front panel is pulled forward when the front panel is removed from the back base, and a contact portion between the claw and the protrusion in the attached state. , and the hook engaging surface is inclined toward the rear side with respect to a straight line obtained by projecting a straight line connecting , onto a virtual plane parallel to the longitudinal direction of the indoor unit. The protrusion has a protrusion engaging surface extending downward on the back side,
3. The indoor unit of an air conditioner according to claim 1, wherein in the attached state, a lower edge portion of the protrusion engaging surface and a lower edge portion of the pawl engaging surface are in contact with each other. The protrusion is formed on the front side and has a protrusion guide surface that slopes downward from the front side to the back side, and the claw is formed on the back side and extends from the front side to the back side. The indoor unit of an air conditioner according to any one of claims 1 to 3 , having a claw guide surface that slopes downward. The indoor unit of an air conditioner according to any one of claims 1 to 4 , wherein said information acquiring means is an infrared sensor. The indoor unit of an air conditioner according to any one of claims 1 to 4 , wherein said information acquisition means is imaging means.

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