JP6665517B2 - Indoor unit of air conditioner - Google Patents

Description

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

  BACKGROUND ART Conventionally, an indoor unit of an air conditioner provided on a ceiling has been known (for example, Patent Document 1). This type of indoor unit includes an indoor unit main body provided on a ceiling and blowing out air that has been sucked in from below, and a decorative panel provided at a lower portion of the indoor unit main body, and extends vertically in a central portion thereof. A suction channel is formed. In addition, a suction grill is detachably attached to the lower end of the suction channel of the indoor unit.

JP 2014-215027 A

  In the indoor unit of the air conditioner as described above, one end of the linearly formed connecting member is connected to the suction grill, while the other end of the connecting member is connected to the main unit of the unit (such as a decorative panel or an indoor unit body). It is conceivable to connect the suction grill and the main unit of the unit by connecting the suction grill to the main unit. With this configuration, the suction grille can be suspended in the air during the work of attaching and detaching the suction grille.

  In the above configuration, at the time of removing the suction grille (work of removing the suction grille from the lower end of the suction passage of the unit main portion and releasing the connection between the suction grille and the unit main portion by the connecting member), Since the suction grill removed from the unit main part can be suspended in the air by the connecting member, it is possible to prevent the suction grill from dropping (the suction grill removed from the unit main part falls to the floor). . However, when the connecting member that connects the suction grill and the unit main part is long, the hanging position of the suction grill by the connecting member is relatively low, so that the suction grill removed from the unit main part may drop suddenly. is there. Further, when the connecting member connecting the suction grill and the main unit of the unit is short, the hanging position of the suction grill by the connecting member is relatively high, so that the suction grill removed from the main unit of the unit is at a relatively high position. In this state, the connection between the suction grille and the main unit by the connecting member is released, and the suction grille disconnected from the main unit by the connecting member may drop suddenly (fall). There is. As described above, if the suction grille drops rapidly during the work of removing the suction grille, the suction grille may be damaged.

  Therefore, an object of the present invention is to provide an indoor unit of an air conditioner that can prevent a sudden drop of the suction grille in a work of removing the suction grille.

First, third inventions of a ceiling indoor unit body (20) to blow air sucked from below provided (CE), the decorative panel (50) provided in the lower part of the indoor unit main body (20) and A unit main part (11) having a suction passage (11a) extending vertically in the center thereof, and a suction grill (51) detachably attached to a lower end of the suction passage (11a). ), Each of which is formed in a linear shape, and one end of which is connected to a peripheral edge of the suction grill (51) so as to face each other across the center of the suction grill (51), and the other end thereof. First and second connecting members (80a, 80b) whose portions are connected to the unit main portion (11), and a linear shape shorter than the first and second connecting members (80a, 80b), respectively. , One end of each of which sandwiches the center of the suction grill (51) Third and fourth connecting members (80c, 80d) connected to the peripheral edge of the suction grill (51) so as to face each other, and the other end of each is connected to the unit main portion (11). An indoor unit of an air conditioner, characterized in that:

In each of the first and third inventions, the suction grille (51) is removed (the suction grille (51) is removed from the lower end of the suction flow path (11a) of the unit main part (11), and the suction grille is connected by the connecting member). In the operation for releasing the connection between the unit main part (11) and the unit main part (11), the suction grill (51) removed from the unit main part (11) can be lowered in two stages. Specifically, the suction grill (51) and the unit main part (11) are connected to each other by the first to fourth connecting members (80a to 80d), so that the suction flow path (11a) of the unit main part (11) is formed. The suction grill (51) removed from the lower end of the first and second connection members (80a, 80b) is suspended at a high suspension position using third and fourth connection members (80c, 80d) shorter than the first and second connection members (80a, 80b). Can be lowered (temporarily hung). Then, while maintaining the connection between the suction grill (51) and the unit main part (11a) by the first and second connecting members (80a, 80b), the suction grill by the third and fourth connecting members (80c, 80d). The suction grille (51) in which the connection between the unit main part (11) by the third and fourth connecting members (80c, 80d) is released by releasing the connection between the unit main part (11a) and the unit main part (11a). Can be suspended (temporarily hooked) to the low suspension position using the first and second connection members (80a, 80b) longer than the third and fourth connection members (80c, 80d).

According to a first aspect of the present invention, in addition to the above configuration, the suction grill (51) is formed in a rectangular shape in plan view, and one end of the first and second connecting members (80a, 80b) is connected to the suction grill. One end of each of the third and fourth connecting members (80c, 80d) is connected to two opposing corners of the four corners of the grill (51). One end of the first and second connecting members (80a, 80b) among the corners is connected to two unconnected corners, respectively.

In the first aspect , the first end of the first and second connecting members (80a, 80b) is connected to two corners (two opposite corners) of the suction grill (51), respectively. The stability of suspension support of the suction grille (51) by the first and second connecting members (80a, 80b) can be improved. Similarly, by connecting one end of the third and fourth connection members (80c, 80d) to two corners (two mutually opposite corners) of the suction grill (51), respectively, the third and fourth connection members (80c, 80d) are connected. The stability of the suspension support of the suction grill (51) by the fourth connecting members (80c, 80d) can be improved.

In a second aspect based on the first aspect , the suction grill (51) is formed in a square shape in plan view, and the length of the first and second connecting members (80a, 80b) is equal to the length of the unit. When the first and second connecting members (80a, 80b) connected to the main part (11) are vertically hung down, the first and second connecting members (80a, 80b) are extended from one end of the first and second connecting members (80a, 80b). The length (L1) to the lower surface of the decorative panel (50) is 1 / √2 times or more and 1 times or less the half length (L0) of the diagonal line of the suction grille (51). It is an indoor unit of an air conditioner characterized by being set.

In the second invention, when the first and second connecting members (80a, 80b) connected to the unit main part (11) are vertically suspended, the first and second connecting members (80a, 80a, The length (L1) from one end of 80b) to the lower surface of the decorative panel (50) is 1 / √2 times or more and 1 time or less of half the length (L0) of the diagonal line of the suction grille (51). By setting the lengths of the first and second connecting members (80a, 80b) so that the suction grill (51) can be low suspended using the first and second connecting members (80a, 80b). The rotation range of the suction grille (51) is such that the angle of inclination of the suction grille (51) with respect to the lower surface of the decorative panel (50) falls within a range of not less than 45 ° and not more than 90 ° when suspended at the position. (Rotation range around the connecting portion with the first and second connecting members (80a, 80b)) can be limited. When the suction grille (51) is suspended at the low suspension position using the first and second connection members (80a, 80b) longer than the third and fourth connection members (80c, 80d), When the angle of inclination of the suction grille (51) with respect to the lower surface of the decorative panel (50) is in the range of 45 ° or more and 90 ° or less, the work of attaching the suction grille (51) is more efficient than otherwise. The operation of connecting the suction grill (51) and the unit main part (11) using the first and second connecting members (80a, 80b) tends to be easy.

According to a third aspect of the present invention, in addition to the above configuration, the suction grill (51) is formed in a rectangular shape in plan view, and one end of the first and second connection members (80a, 80b) is connected to the suction grill. One end of each of the third and fourth connecting members (80c, 80d) is connected to two opposing sides of the four sides of the grill (51). One end of the first and second connecting members (80a, 80b) of the sides is connected to two unconnected sides, respectively.

In the third aspect , the first end of the first and second connecting members (80a, 80b) is connected to two sides (two sides facing each other) of the suction grille (51), respectively. The stability of suspension support of the suction grille (51) by the first and second connecting members (80a, 80b) can be improved. Similarly, by connecting one end of the third and fourth connection members (80c, 80d) to two sides (two sides facing each other) of the suction grill (51), respectively, the third and fourth connection members (80c, 80d) are connected. The stability of the suspension support of the suction grill (51) by the fourth connecting members (80c, 80d) can be improved.

According to the first, third respective inventions, since it is possible to the unit main portion suction grill removed from (11) (51) In the detaching operation of the suction grille (51) is lowered in two stages, the suction grille ( It is possible to prevent the suction grille (51) from dropping abruptly during the removal work of (51).

According to the first invention, the stability of suspension support of the suction grill (51) by the first and second connecting members (80a, 80b) can be improved, and the third and fourth connecting members (80c) can be improved. , 80d), the stability of suspension support of the suction grille (51) can be improved, so that the work of removing the suction grille (51) can be performed smoothly.

According to the second invention, when the suction grill (51) is suspended at the low suspension position using the first and second connection members (80a, 80b), the lower surface of the decorative panel (50) can be removed. The rotation range of the suction grille (51) (the connection portion with the first and second connection members (80a, 80b) is adjusted so that the inclination angle of the suction grille (51) falls within the range of 45 ° or more and 90 ° or less. The rotation of the suction grille (51) suspended from the first and second connecting members (80a, 80b) can be restricted because the rotation of the suction grille (51) can be restricted. ) Can be prevented, and the suction grill (51) is connected to the unit main part (11) using the first and second connecting members (80a, 80b). Work) can be facilitated.

According to the third invention, the stability of suspension support of the suction grille (51) by the first and second connecting members (80a, 80b) can be improved, and the third and fourth connecting members (80c , 80d), the stability of suspension support of the suction grille (51) can be improved, so that the work of removing the suction grille (51) can be performed smoothly.

FIG. 1 is a perspective view showing an indoor unit of the air conditioner of the embodiment. FIG. 2 is a longitudinal sectional view showing a configuration example of the indoor unit. FIG. 3 is a bottom view showing a configuration example of the decorative panel. FIG. 4 is a perspective view showing a configuration example of the suction grill. FIG. 5 is a schematic view showing the suction grille connected to the unit main part by a part of the connecting members. FIG. 6 is an enlarged plan view showing a part of the suction grille. FIG. 7 is an enlarged perspective view showing a part of the indoor unit. FIG. 8 is a schematic view showing the suction grille suspended from the unit main part by the first to fourth connecting members. FIG. 9 is a schematic diagram showing the suction grille suspended from the main unit of the unit by the first and second connecting members. FIG. 10 is a schematic diagram showing a modification of the indoor unit.

  Hereinafter, embodiments will be described in detail with reference to the drawings. In the drawings, the same or corresponding portions have the same reference characters allotted, and description thereof will not be repeated.

(Air conditioner indoor unit)
FIG. 1 shows a configuration example of an indoor unit (10) of an air conditioner according to an embodiment. The indoor unit (10) is provided on a ceiling (CE) of a room to be air-conditioned, and is connected to an outdoor unit (not shown) provided outside by piping to constitute an air conditioner. In this air conditioner, an air conditioning operation such as a cooling operation or a heating operation is performed.

  As shown in FIGS. 1 to 9, the indoor unit (10) includes an indoor unit main body (20), a decorative panel (50), a suction grill (51), and a plurality of connecting members (in this example, a first connecting member). To fourth connection members (80a to 80d)). In the following description, the first to fourth connecting members (80a to 80d) are collectively referred to as “connecting member (80)”.

  In this example, the indoor unit (10) is suspended by a suspension mechanism (not shown) in a space above the ceiling (CE) (that is, behind the ceiling). The indoor unit main body (20) and the decorative panel (50) constitute a unit main part (11).

  FIG. 1 is a perspective view showing the indoor unit (10) as viewed from obliquely below. FIG. 2 is a vertical sectional view showing a vertical section of the indoor unit (10), and corresponds to a vertical sectional view taken along line II-II of FIG. FIG. 3 is a bottom view showing the decorative panel (50) viewed from below. FIG. 4 is a perspective view showing the suction grille (51) as viewed from obliquely above. FIG. 5 is a schematic view showing the suction grille (51) connected to the unit main part (11) by a part of the connecting members (80), and the upper part of FIG. 5 is a longitudinal section of the unit main part (11). 5 corresponds to a top view of the grill (51). FIG. 6 is an enlarged plan view showing a part of the suction grille (51) (specifically, a corner of the suction grille (51) in plan view). FIG. 7 is an enlarged perspective view of a part of the indoor unit (10) (specifically, a connecting portion between the decorative panel (50) and the connecting member (80)). FIG. 8 is a schematic diagram showing the suction grille (51) suspended from the unit main part (11) by the first to fourth connecting members (80a to 80d). FIG. 9 is a schematic diagram showing the suction grille (51) suspended from the unit main part (11) by the first and second connecting members (80a, 80b). 4 and 5, illustration of the second connecting member (80b) and the fourth connecting member (80d) is omitted.

(Indoor unit body)
The indoor unit body (20) is provided on a ceiling (CE) with an indoor fan (31) and an indoor heat exchanger (32) inside, and is configured to control the temperature of air taken in from below and blow it out. Have been. In this example, the indoor unit main body (20) has a casing (21), a drain pan (33), and a bell mouth (34) in addition to the indoor fan (31) and the indoor heat exchanger (32).

<casing>
The casing (21) is formed in a rectangular parallelepiped box shape with an open lower surface. A heat insulating material (not shown) is provided on the inner surface of the casing (21). The casing (21) houses the indoor fan (31), the indoor heat exchanger (32), the drain pan (33), and the bellmouth (34).

<Indoor fan>
The indoor fan (31) is arranged at the center inside the casing (21). In this example, the indoor fan (31) is configured to blow air sucked from below from the side to the radial outside. Specifically, the indoor fan (31) has a fan motor (31a) and an impeller (31b). The fan motor (31a) is fixed to a top plate of the casing (21), and the impeller (31b) is connected to a rotation shaft of the fan motor (31a).

<Indoor heat exchanger>
The indoor heat exchanger (32) is arranged so as to surround the indoor fan (31), and is configured to exchange heat between the refrigerant and air carried by the indoor fan (31). For example, the indoor heat exchanger (32) is configured by a cross-fin type fin-and-tube heat exchanger. Further, a refrigerant circuit is formed by connecting the indoor heat exchanger (32) provided in the indoor unit (10) with the compressor, the outdoor heat exchanger, and the expansion valve provided in the outdoor unit (not shown) by piping. Have been. In this refrigerant circuit, the refrigerant is reversibly circulated to perform a vapor compression refrigeration cycle. The indoor heat exchanger (32) functions as an evaporator to cool the air during the cooling operation, and functions as a radiator (condenser) to heat the air during the heating operation.

<Drain pan>
The drain pan (33) is formed in a flat rectangular parallelepiped shape vertically, and is arranged below the indoor heat exchanger (32). The drain pan (33) has one air inlet (33a), a plurality (four in this example) of air outlets (33b), and a drain groove (33c). The air inlet (33a) is formed at the center of the drain pan (33), and penetrates vertically through the drain pan (33). The four air outlets (33b) are formed around the air inlet (33a), and penetrate vertically through the drain pan (33). The drain groove (33c) is formed annularly along the lower end of the indoor heat exchanger (32), and receives condensed water generated in the indoor heat exchanger (32). In this example, the four air outlets (33b) are formed along the four sides of the drain pan (33) in plan view. The drain groove (33c) extends annularly between the air inlet (33a) and the four air outlets (33b) in plan view.

<Bellmouth>
The bell mouth (34) is formed in a tubular shape whose opening area increases from the upper edge to the lower edge, and the upper edge is inserted into the lower end (suction port) of the opening of the indoor fan (31). Is accommodated in the air inlet (33a) of the drain pan (33).

[Decorative panel]
The decorative panel (50) is formed in a vertically flat panel shape, and is provided at a lower portion of the indoor unit main body (20). Further, the decorative panel (50) is formed with a mounting port (40) for mounting the suction grill (51) and a plurality (four in this example) of air outlets (51b). A plurality (four in this example) of air outlets (51b) are provided with a plurality (four in this example) of air direction adjusting blades (56). In this example, the decorative panel (50) is formed in a rectangular shape (specifically, a square shape) in plan view. In addition, the decorative panel (50) has a central portion on the lower surface (specifically, a portion located inside the four air outlets (51b)) formed in a flat surface shape, and an outer peripheral portion of the lower surface. Are formed in an inclined surface shape that is gradually inclined toward the outer periphery.

<Mounting port>
The mounting port (40) is formed at the center of the decorative panel (50), and penetrates the decorative panel (50) up and down and communicates with the air inlet (33a) of the drain pan (33). In this example, the attachment port (40) and the air introduction port (33a) constitute a suction flow path (a suction flow path (11a) extending in the vertical direction) of the unit main part (11). The opening area of the attachment port (40) is larger than the opening area of the air introduction port (33a). Further, the mounting opening (40) is formed in a rectangular shape (specifically, a square shape) in plan view.

<Air outlet>
The four air outlets (51b) are formed around the mounting port (40), penetrate vertically through the decorative panel (50), and communicate with the four air outlets (33b) of the drain pan (33). . In this example, the four air outlets (51b) are formed along the four sides of the decorative panel (50).

<Wind direction adjusting blade>
The four wind direction adjusting blades (56) are provided at the lower ends of the four air outlets (51b), respectively, and are configured to adjust the direction of the flow of air flowing through the air outlets (51b). The wind direction adjusting blade (56) is formed in a plate shape extending along the longitudinal direction of the air outlet (51b), and swing shafts are provided at both ends in the longitudinal direction. The wind direction adjusting blade (56) is supported by the decorative panel (50) so as to be swingable about the swing axis.

(Suction grill)
The suction grill (51) is formed in a vertically flat panel shape, and is detachably attached to the lower end of the attachment opening (40) of the decorative panel (50). The suction grill (51) includes a frame member (70), a first plate member (52), a second plate member (53), a filter (55), and a plurality (four in this example) of sliding portions. (57). In this example, a connection member (80) is connected to a corner of the peripheral portion of the suction grille (51) in plan view. That is, the corners of the suction grille (51) in plan view are part of the periphery of the suction grille (51) to which the connecting member (80) is connected (hereinafter, “the connecting portion (54) of the suction grille (51)”). Described).

<Frame member>
The frame member (70) is formed in a cylindrical shape, and its inner peripheral surface constitutes an air inlet (51a) extending in the up-down direction, and its lower surface protrudes toward the outer peripheral side. In this example, the frame member (70) is formed in a rectangular (specifically, square) tubular shape, and its lower surface is formed in a rectangular shape (specifically, square shape) in plan view. The air suction port (51a) is formed in a rectangular shape (specifically, a square shape) in plan view. Further, the air suction port (51a) is formed so that its opening area becomes gradually narrower from the lower end to the upper end, and is bent so as to be concave downward.

  In this example, the frame member (70) is constituted by a lower surface member (71) and a peripheral wall member (72). The lower surface member (71) is a member corresponding to the lower surface portion of the frame member (70), and is formed in a rectangular (specifically, square) flat plate shape in plan view. In addition, an opening that becomes a part of the air suction port (51a) is formed in the center of the lower surface member (71), and the peripheral wall member (72) is a member corresponding to the trunk of the frame member (70). Is formed in a rectangular (specifically, square) cylindrical shape, is disposed above the lower surface member (71), and communicates with the opening of the lower surface member (71). That is, in this example, the opening of the lower surface member (71) and the inner peripheral surface of the peripheral wall member (72) constitute an air suction port (51a).

  Further, at a part of a peripheral portion of the suction grille (51), which is a connecting portion (54) of the suction grille (51) (in this example, a corner portion of the suction grille (51) in plan view), a peripheral wall member (72) is provided. (In this example, the lower end of the corner of the peripheral wall member (72) in plan view) extends outward along the lower surface member (71). A plurality (eight in this example) of extending pieces (72a) are provided on the peripheral edge of the peripheral wall member (72). The extension piece (72a) extends from the lower edge of the peripheral wall member (72) to the outer peripheral side. The peripheral wall member (72) has an extended portion extending from a part of the peripheral edge thereof (in this example, a corner portion in plan view) in a state where the inner peripheral surface thereof communicates with the opening of the lower surface member (71). And a plurality of extending pieces (72a) are screwed to the lower surface member (71) by fixing screws (73) and fixed to the lower surface member (71).

<First plate member>
The first plate member (52) is formed in a plate shape (specifically, a non-porous plate shape) that impedes the flow of air, and is provided at a lower end portion of the air suction port (51a). The first plate member (52) has an air inlet (51a) formed so that a suction opening (60) is formed between the outer peripheral edge thereof and the opening edge of the air inlet (51a) in plan view. It covers the center.

  In this example, the first plate member (52) is formed in a square plate shape smaller than the square air inlet (51a) in a plan view, and the lower surface thereof has a height of the air inlet ( It is provided at the lower end of the air suction port (51a) so as to have the same height as the lower end of 51a). The lower surface of the first plate member (52) is formed in a flat surface shape, and the lower surface thereof is flush with the central portion of the lower surface of the suction grill (51) across the suction opening (60). The height of the lower surface of the first plate member (52) is an example. For example, the height of the lower surface of the first plate member (52) is higher than the height of the lower end of the air suction port (51a). You may.

<Second plate member>
The second plate member (53) is formed in a plate shape extending along the inner circumference of the air suction port (51a), and the air suction port (51a) is arranged such that its upper edge is located closer to the inner circumference than the lower edge. Is provided on the inner periphery of the. The upper edge of the second plate member (53) is located above the lower end of the air suction port (51a), and the lower edge of the second plate member (53) surrounds the outer periphery of the first plate member (52) in plan view. .

  In this example, the second plate member (53) extends continuously over the entire inner circumference of the air suction port (51a). The second plate member (53) is bent so as to be concave with respect to the outer peripheral edge of the first plate member (52). Specifically, the second plate member (53) is formed in a tubular shape having a rectangular cross section (square in this example), and its upper edge is located closer to the inner periphery than the lower edge. The first plate member (52) is curved in an arc shape that is concave with respect to the outer peripheral edge.

  In this example, the lower edge of the second plate member (53) is located between the inner peripheral edge and the outer peripheral edge of the suction opening (60) in plan view, and the suction opening (60) is A first suction opening (61) located on the inner peripheral side of the lower edge of the two-plate member (53), and a second suction opening (62) located on the outer peripheral side of the lower edge of the second plate member (53). And divided into The inner peripheral edge of the suction opening (60) corresponds to the outer peripheral edge of the first plate member (52), and the outer peripheral edge of the suction opening (60) corresponds to the opening edge of the air intake port (51a).

<Supporting member>
The first plate member (52) and the second plate member (53) are connected to and supported by the frame member (70) by a plurality (four in this example) of support members (74). In this example, the four support members (74) are arranged at four corners of the frame member (70). The support member (74) is formed integrally with the second plate member (53). The support member (74) has one end screwed to the corner of the frame member (70) in plan view, and the other end screwed to the corner of the first plate member (52) in plan view. It is hooked.

<filter>
The filter (55) is provided above the air suction port (51a), and is configured to capture dust in the air that has passed through the air suction port (51a). Specifically, the filter (55) is formed in a square lattice frame shape in a plan view, and is attached to the upper side of the center of the panel body (51) to cover the air inlet (51a). 4 and 5, the illustration of the filter (55) is omitted.

<Slide part>
The slide portion (57) is provided on the peripheral edge of the suction grill (51) (specifically, on the peripheral edge of the frame member (70)). In this example, four slide portions (57) are provided at the center of the four sides of the frame member (70). Further, the slide portion (57) is configured to be able to advance and retreat with respect to the decorative panel (50), and is hooked on the decorative panel (50) while being slid toward the decorative panel (50). Specifically, in the slide portion (57), the tip of the slide portion (57) is provided on the inner peripheral surface of the suction flow path (11a) (in this example, the inner peripheral surface of the decorative panel (50)). A position to be inserted into the engagement hole (58) (hereinafter referred to as an "engagement position"), and a position at which the tip of the slide portion (57) comes off the engagement hole (58) (hereinafter referred to as the "disengagement position") ) And are slidable.

(Connecting member)
As shown in FIG. 8, the first and second connecting members (80a, 80b) are formed in a linear shape. The first and second connecting members (80a, 80b) are connected to the peripheral edge of the suction grill (51) such that one ends of the first and second connecting members face each other across the center of the suction grill (51). Is connected to the unit main part (11). In this example, one end of the first and second connecting members (80a, 80b) are respectively connected to two opposing corners of the four corners of the suction grille (51) in plan view. The other ends of the first and second connecting members (80a, 80b) are connected to the four suction channels (11a) (specifically, the mounting openings (40) of the decorative panel (50)) in plan view. Two corners of the suction grille (51) to which one end of the first and second connection members (80a, 80b) are connected, which correspond to two corners of the suction grille (51). Section).

  The third and fourth connecting members (80c, 80d) are formed in a linear shape shorter than the first and second connecting members (80a, 80b). The third and fourth connecting members (80c, 80d) are connected to the peripheral edge of the suction grill (51) such that one ends of the third and fourth connecting members face each other across the center of the suction grill (51). Is connected to the unit main part (11). In this example, one end of the third and fourth connecting members (80c, 80d) is connected to one end of the first and second connecting members (80a, 80b) among the four corners of the suction grille (51) in plan view. The part is connected to each of the two unconnected corners. The other ends of the third and fourth connecting members (80c, 80d) are connected to the four suction channels (11a) (specifically, the mounting ports (40) of the decorative panel (50)) in plan view. One of the corners, the other end of the first and second connection members (80a, 80b) is not connected, and the suction is connected to one end of the third and fourth connection members (80c, 80d). (Two corners corresponding to the two corners in plan view of the grill (51)).

  As shown in FIG. 9, in this example, the length of the first and second connecting members (80a, 80b) is equal to the length of the first and second connecting members (80a, 80b) connected to the unit main part (11). 80a, 80b), the length (L1) from one end of the first and second connecting members (80a, 80b) to the lower surface of the decorative panel (50) is equal to the length of the suction grille (51). The length is set to be not less than 1 / √2 times and not more than 1 time the half length (L0) of the diagonal line.

[Details of connecting members]
As shown in FIGS. 4 to 7, the connecting member (80) has a linear portion (81), a first connecting portion (82), and a second connecting portion (83). The linear portion (81) is formed in a linear shape. For example, the linear portion (81) is configured by a linear body such as a string or a wire. The first connecting portion (82) corresponds to one end of the connecting member (80), and the second connecting portion (83) corresponds to the other end of the connecting member (80).

<First connection part>
The first connecting portion (82) is provided at one end of the linear portion (81) and is connected to the suction grill (51). Specifically, the first connecting portion (82) is a part of a peripheral portion of the suction grill (51), which is a connecting portion (54) of the suction grill (51) (in this example, a plane of the suction grill (51)). (A corner in the eye). That is, in this example, the first connecting portion (82) is formed in a washer shape (annular shape). Then, the connecting screw (79) is inserted into the first connecting portion (82) and fastened to the suction grill (51), so that the first connecting portion (82) is screwed and fixed to the suction grill (51). Have been.

<Second connecting part>
The second connection part (83) is provided at the other end of the linear part (81) and is connected to the unit main part (11). In this example, the second connecting portion (83) is constituted by a hook (84). The hook (84) is formed in an annular shape, and a part thereof is configured to be openable and closable. Specifically, the hook portion (84) has a hook body (84a) formed in a hook shape, and extends from the base end of the hook body (84a) toward the tip end of the hook body (84a). A spring portion (84b) that comes into contact with the tip of the hook (84a) from the inside, and the elastic portion of the spring (84b) causes the tip of the spring (84b) to contact the tip of the hook body (84a) from the inside. It is configured to be in the closed state by being pressed, and to be in the open state by being separated from the distal end of the hook body (84a) by the external force. For example, the hook (84) is formed by an eggplant ring.

(Engagement part)
The indoor unit (10) is provided with a plurality (four in this example) of engagement portions (85). The engaging portion (85) is provided on the unit main portion (11), and is configured to be able to hook the hook portion (84) of the connecting member (80). Specifically, the engaging portion (85) has an engaging hole (85a) through which the hook (84) of the connecting member (80) can be hooked. That is, the other end of the connecting member (80) (the hook portion (84) as the second connecting portion (83)) is hooked into the engaging hole (85a) of the engaging portion (85), whereby the connecting member (80 ) Is connected to the unit main part (11).

  In this example, the engaging portion (85) is provided on the inner peripheral surface of the suction channel (11a) (specifically, on the inner peripheral surface of the mounting opening (40) of the decorative panel (50)). Specifically, the engaging portion (85) protrudes inward from the inner peripheral surface of the suction flow path (11a) (specifically, the inner peripheral surface of the mounting port (40) of the decorative panel (50)), The plate surface is formed in a plate shape that faces in the vertical direction. One end (tip) of the engaging portion (85) is bent in the up-down direction (upward in this example). Further, the engagement hole (85a) vertically passes through the engagement portion (85). In this example, the engaging portion (85) is arranged at a corner of the suction flow path (11a) in plan view.

[Installation work of suction grill]
Next, the suction grill (51) is attached (the suction grill (51) is connected to the unit main part (11) by the connecting member (80), and the lower end of the suction flow path (11a) of the unit main part (11) is connected). The work of attaching the suction grille (51) to the section) will be described.

  First, the worker attaches the other end (the hook (84) that is the second connecting part (83)) of the first and second connecting members (80a, 80b) to the two panels provided on the decorative panel (50). Hook each on the engagement part (85). Thereby, the other ends of the first and second connecting members (80a, 80b) are connected to the unit main part (11). One end (first connecting portion (82)) of each of the first and second connecting members (80a, 80b) is connected to two corners of the suction grill (51) in plan view (that is, the two ends of the suction grill (51)). Two connecting portions (54)). Therefore, the hook (84) of the first and second connecting members (80a, 80b) is hooked on the two engaging portions (85), respectively, so that the suction grille is formed by the first and second connecting members (80a, 80b). (51) and the unit main part (11) can be connected. As a result, as shown in FIG. 9, the suction grill (51) is moved to the low suspension position using the first and second connection members (80a, 80b) longer than the third and fourth connection members (80c, 80d). Can be suspended (temporarily hung).

  Next, the operator moves the suction grill (51) suspended by the first and second connecting members (80a, 80b) upward, and the other ends of the third and fourth connecting members (80c, 80d). The portions (the hook portions (84) serving as the second connecting portions (83)) are hooked on the two engaging portions (85) provided on the decorative panel (50), respectively. Thereby, the other ends of the third and fourth connecting members (80c, 80d) are connected to the unit main part (11). One end (first connecting portion (82)) of the third and fourth connecting members (80c, 80d) is connected to two corners of the suction grille (51) in plan view (that is, the two ends of the suction grille (51)). Two connecting portions (54)). Therefore, the hook (84) of the third and fourth connecting members (80c, 80d) is hooked on the two engaging portions (85), respectively, so that the suction grille is formed by the third and fourth connecting members (80c, 80d). (51) and the unit main part (11) can be connected. As a result, as shown in FIG. 8, the suction grill (51) is moved to the high suspension position by using the third and fourth connection members (80c, 80d) shorter than the first and second connection members (80a, 80b). (A position higher than the low suspension position).

  Next, the worker moves the suction grille (51) suspended by the third and fourth connecting members (80c, 80d) upward to attach the suction grille (51) to the mounting opening (50) of the decorative panel (50). The sliding part (57) provided on the decorative panel (50) is slid from the disengaged position to the engaged position. Thereby, the tip of the slide portion (57) is inserted into the engagement hole (58) provided in the inner peripheral surface of the decorative panel (50) (that is, the inner peripheral surface of the suction flow path (11a)). The suction grill (51) is held in the mounting opening (40) of the decorative panel (50). In this way, the suction grille (51) is attached to the attachment opening (40) of the decorative panel (50).

  After connecting the suction grille (51) and the unit main part (11) by the third and fourth connecting members (80c, 80d), the operator uses the first and second connecting members (80a, 80b). The suction grill (51) may be connected to the unit main part (11), and then the suction grill (51) may be attached to the mounting opening (40) of the decorative panel (50).

[Removal work of suction grill]
Next, the suction grill (51) is removed (the suction grill (51) is removed from the lower end of the suction flow path (11a) of the unit main part (11), and the suction grill (51) is connected to the unit by the connecting member (80). The operation of releasing the connection with the main part (11) will be described.

  First, the operator slides the slide portion (57) provided on the decorative panel (50) from the engaged position to the disengaged position, and moves the inner peripheral surface of the decorative panel (50) (that is, the suction flow path (11a)). Remove the distal end of the slide portion (57) from the engagement hole (58) provided in the inner peripheral surface of ()). Thereby, the holding of the suction grille (51) by the slide portion (57) is released.

  Next, the worker moves the suction grill (51) downward and removes the suction grill (51) from the mounting opening (40) of the decorative panel (50). At this time, since the suction grill (51) and the unit main part (11) are connected by the first to fourth connecting members (80a to 80d), as shown in FIG. The suction grill (51) removed from the mouth (40) is moved to the high suspension position using the third and fourth connecting members (80c, 80d) shorter than the first and second connecting members (80a, 80b). Can be suspended (temporarily hung).

  Next, the worker attaches the other end of the third and fourth connecting members (80c, 80d) (the hook (84) that is the second connecting part (83)) to the decorative panel (50). Remove from each of the two engaging parts (85). Thereby, the connection between the suction grill (51) and the unit main part (11a) by the third and fourth connecting members (80c, 80d) is released. At this time, since the connection between the suction grill (51) and the unit main part (11) by the first and second connecting members (80a, 80b) is maintained, as shown in FIG. The suction grille (51), which has been disconnected from the unit main part (11) by the connecting members (80c, 80d), is connected to the first and second connecting members longer than the third and fourth connecting members (80c, 80d). (80a, 80b), it can be hung to a low suspension position (a position lower than a high suspension position).

  Next, the worker attaches the other end of the first and second connecting members (80a, 80b) (the hook (84) as the second connecting part (83)) to the decorative panel (50). Remove from each of the two engaging parts (85). Thereby, the connection between the suction grill (51) and the unit main part (11a) by the first and second connecting members (80a, 80b) is released. In this way, the suction grille (51) is removed from the mounting opening (40) of the decorative panel (50).

[Effects of Embodiment]
As described above, the suction grill (51) detached from the unit main part (11) can be lowered in two stages in the work of removing the suction grill (51), so that the suction in the work of removing the suction grill (51) can be performed. The descent of the grill (51) can be prevented.

  Further, the first and second connection members are connected by connecting one end portions of the first and second connection members (80a, 80b) to two corner portions (two opposite corner portions) of the suction grill (51), respectively. The stability of suspension support of the suction grill (51) by the members (80a, 80b) can be improved. Similarly, by connecting one end of the third and fourth connection members (80c, 80d) to two corners (two mutually opposite corners) of the suction grill (51), respectively, the third and fourth connection members (80c, 80d) are connected. The stability of the suspension support of the suction grill (51) by the fourth connecting members (80c, 80d) can be improved. Thereby, the work of removing the suction grill (51) can be performed smoothly.

  Further, when the first and second connecting members (80a, 80b) connected to the unit main part (11) are vertically suspended, one end portions of the first and second connecting members (80a, 80b) are formed. So that the length (L1) from the bottom to the lower surface of the decorative panel (50) is not less than 1 / √2 times and not more than 1 times the half length (L0) of the diagonal line of the suction grill (51). By setting the length of the first and second connecting members (80a, 80b), the suction grill (51) is suspended at the low suspension position using the first and second connecting members (80a, 80b). In this case, the rotation range (first and second rotations) of the suction grille (51) is set so that the inclination angle of the suction grille (51) with respect to the lower surface of the decorative panel (50) falls within the range of 45 ° or more and 90 ° or less. (2) The rotation range around the connecting portion with the connecting member (80a, 80b) can be limited. When the suction grill (51) is suspended at the low suspension position using the first and second connecting members (80a, 80b), the inclination of the suction grill (51) with respect to the lower surface of the decorative panel (50). When the angle is in the range of not less than 45 ° and not more than 90 °, the work of attaching the suction grille (51) (particularly, using the first and second connecting members (80a, 80b)) is more efficient than in the other case. Therefore, the work of connecting the suction grill (51) and the unit main part (11)) tends to be easy. Therefore, by setting the lengths of the first and second connecting members (80a, 80b) as described above, the rotation range of the suction grille (51) is restricted to restrict the first and second connecting members (80a, 80b). ) Can be prevented from being inverted (the suction grill (51) rotates and turned over), and the suction grill (51) can be attached (particularly, the first and second suction grills). Using the connecting members (80a, 80b), the operation of connecting the suction grill (51) and the unit main part (11) can be facilitated.

(Modified example of indoor unit)
As shown in FIG. 10, one end of the first and second connecting members (80a, 80b) is connected to two opposing sides (in this example, the side parts) of the four sides of the suction grille (51). Of the suction grille (51). One end of the third and fourth connection members (80c, 80d) is connected to the first and second connection members (80a, 80b) of the four sides of the suction grille (51). May be connected to two sides that are not connected (in this example, the center of the sides).

  Further, in the case of the above configuration, the other ends of the first and second connecting members (80a, 80b) are two sides facing each other among the four sides of the suction flow path (11a) in plan view. It is preferable that one end of each of the first and second connecting members (80a, 80b) be connected to two sides corresponding to two sides of the suction grille (51) in plan view. The other end of the third and fourth connection members (80c, 80d) is the other of the first and second connection members (80a, 80b) of the four sides of the suction flow path (11a) in plan view. Two sides corresponding to the two sides in a plan view of the suction grille (51) to which two ends not connected to one another (the one ends of the third and fourth connection members (80c, 80d) are connected). Part). Specifically, when configured as described above, the engaging portion (85) is disposed on a side portion (more specifically, a center portion of the side portion) of the suction flow path (11a) in plan view. Is preferred.

  With the above-described configuration, the stability of suspension support of the suction grille (51) by the first and second connecting members (80a, 80b) can be improved, and the third and fourth connecting members ( 80c, 80d) can improve the stability of suspension support of the suction grille (51). Thereby, the work of removing the suction grill (51) can be performed smoothly.

(Other embodiments)
Although the case where the engaging portion (85) is provided on the decorative panel (50) has been described as an example, the engaging portion (85) may be provided on the indoor unit main body (20). That is, the engaging portion (85) may be provided on the decorative panel (50) of the unit main portion (11), or may be provided on the other portion of the unit main portion (11) (with the decorative panel (50)). A different part, specifically, the indoor unit main body (20)) may be provided. That is, the other end of the connecting member (80) (the hook portion (84) as the second connecting portion (83)) may be connected to the decorative panel (50) of the unit main portion (11), The unit main part (11) may be connected to another part (a part different from the decorative panel (50), specifically, the indoor unit main body (20)).

  Further, the above embodiments and modified examples may be appropriately combined and implemented. The above embodiments and modified examples are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

  As described above, the above-described indoor unit is useful as an indoor unit of an air conditioner provided on a ceiling.

Reference Signs List 10 indoor unit 11 unit main part 11a suction flow path 20 indoor unit main body 50 decorative panel 51 suction grill 80 connecting member 80a first connecting member 80b second connecting member 80c third connecting member 80d fourth connecting member 81 linear part 82 1 connecting portion 83 second connecting portion 84 hook portion 85 engaging portion

Claims (3)

An indoor unit main body (20) provided on a ceiling (CE) and blowing out air sucked from below, and a decorative panel (50) provided at a lower portion of the indoor unit main body (20). A unit main part (11) in which a suction flow path (11a) extending to
A suction grill (51) detachably attached to a lower end portion of the suction channel (11a),
Each of them is formed in a linear shape, and one end is connected to the peripheral edge of the suction grill (51) so as to face each other across the center of the suction grill (51). First and second connecting members (80a, 80b) connected to the unit main part (11);
Each of the suction grilles (80a, 80b) is formed in a linear shape shorter than the first and second connecting members (80a, 80b), and the suction grille ( 51) third and fourth connecting members (80c, 80d) connected to the peripheral edge of each other, and the other end thereof connected to the unit main portion (11).
The suction grill (51) is formed in a rectangular shape in plan view,
One end of each of the first and second connecting members (80a, 80b) is connected to two opposing corners of the four corners of the suction grill (51), respectively.
One end of the third and fourth connecting members (80c, 80d) is connected to one end of the first and second connecting members (80a, 80b) of the four corners of the suction grill (51). An indoor unit for an air conditioner, wherein the indoor unit is connected to two corners not provided. In claim 1,
The suction grill (51) is formed in a square shape in plan view,
The length of the first and second connecting members (80a, 80b) is such that the first and second connecting members (80a, 80b) connected to the unit main part (11) are vertically suspended. In this case, the length (L1) from one end of the first and second connecting members (80a, 80b) to the lower surface of the decorative panel (50) is half the length of the diagonal line of the suction grille (51) ( An indoor unit for an air conditioner, wherein the length of the indoor unit is set to be not less than 1 / √2 times and not more than 1 time of L0). An indoor unit main body (20) provided on a ceiling (CE) and blowing out air sucked from below, and a decorative panel (50) provided at a lower portion of the indoor unit main body (20). A unit main part (11) in which a suction flow path (11a) extending to
A suction grill (51) detachably attached to a lower end portion of the suction channel (11a),
Each of them is formed in a linear shape, and one end is connected to the peripheral edge of the suction grill (51) so as to face each other across the center of the suction grill (51). First and second connecting members (80a, 80b) connected to the unit main part (11);
Each of the suction grilles (80a, 80b) is formed in a linear shape shorter than the first and second connecting members (80a, 80b), and the suction grille ( 51) third and fourth connecting members (80c, 80d) connected to the peripheral edge of each other, and the other end thereof connected to the unit main portion (11).
The suction grill (51) is formed in a rectangular shape in plan view,
One end of each of the first and second connection members (80a, 80b) is connected to two opposing sides of the four sides of the suction grill (51), respectively.
One end of the third and fourth connecting members (80c, 80d) is connected to one end of the first and second connecting members (80a, 80b) of the four sides of the suction grill (51). An indoor unit for an air conditioner, wherein the indoor unit is connected to two sides that are not connected.

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