Air conditioner

Abstract

An air conditioner according to the present invention is provided with a wall-mounted indoor unit mounted on a wall surface via a mounting plate. The indoor unit is provided with a shell for accommodating the indoor heat exchanger and indoor side piping led out from the back face of the shell to the outside, a connecting piping accommodating part capable of accommodating the indoor side piping is formed on the back face, and an opening and closing component capable of being opened and closed through rotation is arranged below the connecting piping accommodating part. The opening / closing member has a fixing claw, can hold the fixing claw in a state in which the fixing claw is locked to the mounting plate in a closed state, and can expose the connecting pipe housing portion below when the opening / closing member is in an open state.

Description

Technical Field

[0001] The present invention relates to an air conditioner. Background Art

[0002] Patent Document 1 discloses an air conditioner mounting device that can easily perform a refrigerant pipe connection operation. The air conditioner mounting device includes an opening formed on the bottom surface of a main body and a cover that covers the opening.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 08-285365 Summary of the invention

[0006] The present invention provides an air conditioner which can suppress the shaking of an indoor unit after installation and can easily connect indoor piping and internal and external connecting piping of the indoor unit.

[0007] The air conditioner of the present invention includes a wall-mounted indoor unit installed on a wall surface via a mounting plate. The indoor unit includes: a housing for storing an indoor heat exchanger and indoor piping leading to the outside from the back of the housing, a connecting piping storage portion capable of storing the indoor piping is formed on the back, and an opening and closing component that is opened and closed by rotation is provided below the connecting piping storage portion. The opening and closing component includes a fixing claw, which can keep the fixing claw in a state of being locked to the mounting plate in a closed state, and can expose the connecting piping storage portion below by changing to an open state.

[0008] The air conditioner of the present invention can suppress the shaking of the indoor unit after installation, and can easily connect the indoor side piping and the internal and external connection piping of the indoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a perspective view of the indoor unit of the air-conditioning apparatus according to Embodiment 1.

[0010] Figure 2 This is a perspective view of the indoor unit as seen from the back.

[0011] Figure 3 This is a cross-sectional view of the indoor unit.

[0012] Figure 4 This is a bottom view of the indoor unit.

[0013] Figure 5 It is a perspective view of the opening and closing member in the closed state.

[0014] Figure 6 It is a perspective view of the opening and closing member in the open state.

[0015] Figure 7 It is a three-dimensional diagram of the cylindrical part.

[0016] Figure 8 This is a three-dimensional view of the bearing portion.

[0017] Fig. 9 This is a cross-sectional view of the opening and closing member in the open state opened at the first angle.

[0018] Fig.10 This is a cross-sectional view of the opening and closing member in the open state opened at the second angle.

[0019] Fig.11 This is a cross-sectional view of the opening and closing parts when disassembled.

[0020] Description of Reference Numerals

[0021] 1 Indoor unit

[0022] 10 Housing

[0023] 11 Indoor heat exchanger

[0024] 13 Air supply device

[0025] 15 Auxiliary piping

[0026] 17Indoor liquid piping (indoor piping)

[0027] 17a front end

[0028] 19Indoor gas piping (indoor piping)

[0029] 19a Frontend

[0030] 20 Decorative cover

[0031] 21 Blowing outlet

[0032] 22 Front Panel

[0033] 23 Swing piece

[0034] 24 Upper panel

[0035] 26 Side Panel

[0036] 28 Lower beam

[0037] 30 Base

[0038] 31 Back

[0039] 32 Insertion

[0040] 32a 1st stopper

[0041] 33 Connection pipe storage section

[0042] 34 Shaft

[0043] 34a Second stopper

[0044] 34b Flat surface

[0045] 34c Curved face

[0046] 35 Upper fixing claw

[0047] 36 mountain-shaped depression

[0048] 37 Lower fixing part

[0049] 38 Lower fixing claw

[0050] 39 Long hole

[0051] 40 Mounting plate

[0052] 41 No.1 hook

[0053] 43 2nd hook

[0054] 45 Fastening surface

[0055] 47 threaded holes

[0056] 50 Opening and closing parts

[0057] 51 Main body

[0058] 52 mountain-shaped protrusion

[0059] 53 Opening and closing part fixing claw

[0060] 55 Inclined surface

[0061] 56 Fastening holes

[0062] 57 cylindrical part

[0063] 57a Insertion hole

[0064] 57b First holding part

[0065] 57c Second holding part

[0066] 59 Bearing

[0067] 59a fitting recess

[0068] 59b First holding part

[0069] 59c Second holding part

[0070] 59d Snap-fit ​​opening

[0071] P1 Internal and external connecting pipes

[0072] P2 Internal and external connection pipes

[0073] W wall DETAILED DESCRIPTION

[0074] (Knowledge and insights that form the basis of the present invention, etc.)

[0075] When the inventors conceived of the present invention, the following technology existed in the technical field of air conditioners, namely, providing an opening on the bottom surface of the main body of the indoor unit, removing a cover that detachably covers the opening, and easily connecting the piping of the indoor unit and the piping of the outdoor unit.

[0076] However, when the cover is provided, it takes time and effort to remove and install the cover, so there is a problem that the improvement of workability is limited. In addition, the inventors have found that if the indoor unit and the mounting plate are not fixed at the position where the cover is provided, the indoor unit is easy to shake. In order to solve these problems, the inventors have formed the content of the present invention.

[0077] Therefore, the present invention provides an air conditioner that suppresses shaking of an indoor unit after installation and facilitates connection of indoor piping and internal and external connecting piping of the indoor unit.

[0078] The following describes the embodiments in detail with reference to the accompanying drawings. However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of already known matters or repeated descriptions of substantially the same structures may be omitted. This is to avoid the following description from being more redundant than necessary and to facilitate understanding by those skilled in the art.

[0079] In addition, the drawings and the following description are provided for those skilled in the art to fully understand the present invention, and are not intended to limit the subject matter described in the scope of the claims.

[0080] (Implementation Method 1)

[0081] Next, embodiment 1 is described using the accompanying drawings.

[0082] [1-1. Structure]

[0083] [1-1-1. Overall structure of the indoor unit]

[0084] Figure 1 It is a perspective view of the indoor unit 1 of the air-conditioning apparatus according to Embodiment 1, and shows the indoor unit 1 viewed from the front. Figure 2 It is a perspective view of the indoor unit 1, and shows the indoor unit 1 viewed from the rear. Figure 31 is a cross-sectional view of the indoor unit 1, showing a cross section of the indoor unit 1 perpendicular to the left-right direction. In addition, the symbol X in the figure indicates the right side of the indoor unit 1, the symbol Y indicates the front side of the indoor unit 1, and the symbol Z indicates the top side of the indoor unit 1. In addition, in the following description, unless otherwise specified, the directions of up and down, left and right, and front and back indicate directions based on the indoor unit 1.

[0085] The air conditioner of Embodiment 1 includes an indoor unit 1 and an outdoor unit (not shown). The indoor unit 1 is a so-called wall-mounted indoor unit installed on a wall surface W in a room. The indoor unit 1 has a box-shaped casing 10 that is long in the left-right direction. The casing 10 accommodates an indoor heat exchanger 11 and a blower 13, etc. (see FIG. 1 ). Figure 3 ).

[0086] like Figure 1 and Figure 2 As shown, the housing 10 includes a decorative cover 20 and a chassis 30. The decorative cover 20 is a resin component that covers the indoor heat exchanger 11 and the air supply device 13 from the left and right, the top and the bottom, and the front. In addition, the rear side, that is, the back side of the decorative cover 20 is open. In detail, the decorative cover 20 includes: a front panel 22 constituting the front of the housing 10, a ventilated upper panel 24 constituting the upper surface of the housing 10, a pair of side panels 26 constituting the left and right side surfaces of the housing 10, and a lower cross beam 28 constituting the lower surface of the housing 10. The various components 22, 24, 26, and 28 constituting the decorative cover 20 can be detached and assembled respectively.

[0087] A blow-out port 21 is formed on the front side of the decorative cover 20 to connect the inside and outside of the decorative cover 20. The blow-out port 21 is an opening formed in the left-right direction of the decorative cover 20. The indoor unit 1 blows the air that has undergone heat exchange with the refrigerant in the indoor heat exchanger 11 into the room from the blow-out port 21, thereby performing air conditioning in the room. In addition, a swinging piece 23 for adjusting the wind direction is provided at the blow-out port 21.

[0088] like Figure 2 and Figure 3 As shown, the chassis 30 is a resin member that closes the opening on the back side of the decorative cover 20. The chassis 30 has a back side portion 31 that constitutes the back side of the housing 10.

[0089] like Figure 2 As shown in FIG. 1 , the auxiliary pipe 15 is led out from the upper right portion of the back portion 31 to the outside of the housing 10. The auxiliary pipe 15 is a pipe formed by bundling the indoor liquid pipe 17 and the indoor gas pipe 19 connected to the indoor heat exchanger 11. The indoor liquid pipe 17 and the indoor gas pipe 19 of the auxiliary pipe 15 are connected to the indoor heat exchanger 11 through the internal and external connecting pipes P1 and P2 (see FIG. Figure 6) is connected to the refrigerant piping of the outdoor unit. Thus, a refrigeration circuit of the air conditioner is formed. The indoor liquid piping 17 and the indoor gas piping 19 in this embodiment correspond to the "indoor piping" of the present invention.

[0090] A connection pipe receiving portion 33 is formed at the lower portion of the back portion 31, which is recessed toward the front in the substantially entire left-right direction. When the auxiliary pipe 15 drawn out from the upper right portion of the back portion 31 is detoured to the left, the connection pipe receiving portion 33 receives the auxiliary pipe 15 and the internal and external connection pipes P1 and P2. For example, when the hole formed in the wall surface W for passing the internal and external connection pipes P1 and P2 is located on the left side relative to the installation position of the indoor unit 1, the indoor pipes 17 and 19 and the internal and external connection pipes P1 and P2 are detoured to the left side in the connection pipe receiving portion 33.

[0091] The bottom frame 30 has an upper fixing claw 35. The upper fixing claw 35 is a protrusion formed downward from the upper end of the bottom frame 30. The upper fixing claw 35 is hooked from above with respect to the upper edge of the mounting plate 40 fixed to the wall surface W. Thus, the indoor unit 1 is supported by the mounting plate 40. In the present embodiment, a pair of upper fixing claws 35 are formed at positions symmetrical with respect to the center in the left-right direction of the indoor unit 1. The mounting plate 40 is a plate-shaped member made of a metal plate.

[0092] Figure 4 4 is a bottom view of the indoor unit 1, showing a state where the decorative cover 20 is removed from the indoor unit 1 mounted on the mounting plate 40. A lower fixing portion 37 is formed at the lower end of the base frame 30. The lower fixing portion 37 is a horizontal flat plate-shaped structure extending rearward from the lower end of the base frame 30. The lower fixing portion 37 is located below the connecting pipe storage portion 33. Figure 4 As shown in the figure, when each indoor pipe 17, 19 is stored in the connecting pipe storage portion 33, the lower fixing portion 37 is located below each indoor pipe 17, 19. In the present embodiment, one lower fixing portion 37 is formed on the bottom frame 30. In addition, in the present embodiment, the lower fixing portion 37 is located below the upper fixing claw 35 on the right side.

[0093] A lower fixing claw 38 and a long hole 39 are formed on the lower fixing portion 37. The lower fixing claw 38 is a protrusion protruding downward from the rear end of the lower fixing portion 37. Figure 4 As shown, the lower fixing claw 38 is hooked on the first hook portion 41 of the mounting plate 40 from above. The first hook portion 41 is formed by bending the lower end of the mounting plate 40 forward. An opening is formed in the center of the first hook portion 41. The lower fixing claw 38 is inserted into the opening of the first hook portion 41 from above, thereby hooking on the first hook portion 41.

[0094] The long hole 39 is a hole that is long in the left-right direction and passes through the lower fixing portion 37. The lower fixing portion 37 is fastened to the mounting plate 40 by screws (not shown) inserted into the long hole 39.

[0095] [1-1-2. Structure of opening and closing member]

[0096] like Figure 4 As shown, an opening and closing member 50 is provided below the connecting pipe storage portion 33. That is, the opening and closing member 50 is located below the indoor pipe 17 stored in the connecting pipe storage portion 33. In this embodiment, the opening and closing member 50 is located below the front end 17a of the indoor liquid pipe 17.

[0097] The opening and closing member 50 is a member made of resin and is provided at a position substantially symmetrical to the lower fixing portion 37 with respect to the center of the indoor unit 1 in the left-right direction. That is, the opening and closing member 50 is located below the upper fixing claw 35 on the left side.

[0098] Figure 5 It is a perspective view of the opening and closing member 50 , and shows the opening and closing member 50 in a closed state. Figure 6 FIG. 5 is a perspective view of the opening and closing component 50, showing the opening and closing component 50 in an open state. Figure 5 and Figure 6 As shown in FIG. 1 , the opening and closing member 50 is mounted on the base frame 30 in a manner that allows rotation about the left and right direction as the rotation axis. When the opening and closing member 50 is in a closed state by rotation, it covers the portion of the connecting pipe storage portion 33 where the front end 17a of the indoor liquid pipe 17 is arranged from below. When the opening and closing member 50 is in an open state by rotation, the front end 17a can be exposed below. Hereinafter, the direction around the rotation axis of the opening and closing member 50 is referred to as the circumferential direction, and the direction orthogonal to the circumferential direction is referred to as the radial direction.

[0099] like Figure 5 and Figure 6 As shown in FIG. 1 , the opening and closing member 50 has a substantially flat plate-shaped main body 51. The main body 51 is disposed substantially in the radial direction. A plurality of ribs for reinforcement are formed on the main body 51.

[0100] At both ends of the main body 51 in the left-right direction, a mountain-shaped protrusion 52 is formed that protrudes outward in the left-right direction. The mountain-shaped protrusion 52 has a substantially triangular cross section. The mountain-shaped protrusion 52 is engaged with a mountain-shaped recess 36 formed in the bottom frame 30 and recessed outward in the left-right direction. As a result, the opening and closing member 50 is maintained in the closed state. When the opening and closing member 50 is in the closed state, the main body 51 is in a posture that extends substantially horizontally toward the rear of the rotation axis (i.e., Figure 3 , Figure 4 and Figure 5 posture).

[0101] like Figures 4 to 6As shown in FIG. 1 , an opening and closing member fixing claw 53 is formed at the radially outer end of the main body 51. The opening and closing member fixing claw 53 protrudes in a direction orthogonal to the main body 51, that is, in a circumferential direction. The opening and closing member fixing claw 53 protrudes downward when the opening and closing member 50 is in a closed state. In addition, when the opening and closing member 50 is in a closed state, the opening and closing member fixing claw 53 can be inserted from above into the opening of the second hook portion 43 formed in the mounting plate 40 (see FIG. 1 ). Figure 4 ).like Figure 4 and Figure 6 As shown in FIG. 1 , the second hook portion 43 is formed by bending the lower end of the mounting plate 40 forward, similarly to the first hook portion 41. An opening is formed at the center of the second hook portion 43. That is, when the indoor unit 1 is mounted on the wall surface W, the opening and closing member fixing claw 53 is in a state of being locked with the second hook portion 43. The opening and closing member fixing claw 53 in this embodiment is an example of a "fixing claw" in the present invention.

[0102] When the indoor unit 1 is installed and used for air conditioning as usual, the opening and closing member 50 is in a closed state. Therefore, the opening and closing member fixing claw 53 of the opening and closing member 50 is locked to the second hook portion 43 of the mounting plate 40 after the indoor unit 1 is installed, thereby suppressing the shaking and displacement of the indoor unit 1.

[0103] like Figures 4 to 6 As shown, an inclined surface 55 is formed at the radially outer end of the main body 51. The inclined surface 55 is a planar portion that faces forward and downward when the opening and closing member 50 is in the closed state. A fastening hole 56 that passes through the inclined surface 55 and is long in the left-right direction is formed on the inclined surface 55. When the opening and closing member 50 is in the closed state, the inclined surface 55 is in surface contact with the fastening surface 45 formed on the mounting plate 40. Figure 6 As shown, the fastening surface 45 is formed by bending the lower end of the mounting plate 40 obliquely upward and forward. In addition, a threaded hole 47 for fastening a screw or a fastener such as a screw is formed on the fastening surface 45. When the opening and closing component 50 is closed, the fastening hole 56 overlaps with the threaded hole 47 of the fastening surface 45. That is, when the opening and closing component 50 is in a closed state, the inclined surface 55 of the opening and closing component 50 and the fastening surface 45 of the mounting plate 40 can be fastened by a fastener via the fastening hole 56 and the threaded hole 47. By fastening the inclined surface 55 and the fastening surface 45, it is difficult for the indoor unit 1 to be lifted from the mounting plate 40, and the shaking and displacement of the indoor unit 1 are suppressed. In addition, in the present embodiment, when the opening and closing component 50 is in a closed state, the inclined surface 55 is in a posture facing forward and downward, so it is easy to perform the fastening operation.

[0104] Figure 7 57 is a three-dimensional diagram of the cylindrical portion. Figure 7As shown in the figure, a cylindrical portion 57 is formed at the left end of the opening and closing member 50. The cylindrical portion 57 is a cylindrical portion having an insertion hole 57a as a circular hole formed in a cross section perpendicular to the left-right direction. The insertion hole 57a opens toward the left. The insertion portion 32 formed on the base frame 30 is inserted into the insertion hole 57a. The insertion portion 32 is a roughly cylindrical protrusion protruding to the right.

[0105] Figure 8 59 is a three-dimensional diagram of the bearing portion. Figure 8 As shown in FIG. 1 , a bearing portion 59 is formed at the right end of the opening and closing member 50. The bearing portion 59 is a portion having a C-shaped cross-section in which a fitting recess 59a as a circular recess is formed in a cross section perpendicular to the left and right directions. The shaft portion 34 formed on the bottom frame 30 is fitted inside the fitting recess 59a. The shaft portion 34 is a columnar protrusion protruding to the left.

[0106] The fitting recess 59a is coaxially arranged with the insertion hole 57a. That is, the imaginary axis passing through the center of the circle formed by the insertion hole 57a passes through the center of the circle formed by the fitting recess 59a. Therefore, as described above, the opening and closing member 50 can rotate around the rotation axis parallel to the left-right direction.

[0107] like Figure 7 and Figure 8 As shown in the figure, the first retaining parts 57b, 59b and the second retaining parts 57c, 59c protruding radially outward are formed on the radially outer surfaces of the cylindrical part 57 and the bearing part 59. In the present embodiment, the first retaining parts 57b, 59b are located on the opposite side of the main body part 51 in the circumferential direction. In addition, the second retaining parts 57c, 59c are formed at positions that are approximately 135° offset from the main body part 51 in the circumferential direction.

[0108] In addition, stoppers 32a and 34a are formed on the base frame 30 above the insertion portion 32 and the shaft portion 34, respectively. The stoppers 32a and 34a are shaped in such a way that a protrusion protruding downward is provided relative to the front end of a flat plate extending in the front-rear direction. The lower end of the protrusion of the stoppers 32a and 34a is located radially inward of the front end of each retaining portion 57b, 57c, 59b, and 59c. Therefore, when the opening and closing component 50 is rotated, each retaining portion 57b, 57c, 59b, and 59c contacts the stoppers 32a and 34a. In addition, a space is formed on the upper side of the stoppers 32a and 34a. Therefore, the stoppers 32a and 34a can be pulled out upward when being pushed up from below.

[0109] Fig. 9 2 is a cross-sectional view of the opening and closing member 50 in an open state opened at a first angle, and shows the opening and closing member 50 in a cross section perpendicular to the left-right direction. Fig. 9As shown, the first retaining portion 57b, 59b contacts the stopper 32a, 34a from the rear, whereby the opening and closing component 50 is maintained in an open state opened at the first angle. In the present embodiment, when the opening and closing component 50 is opened at the first angle, the opening and closing component 50 is located at a rotation position rotated about 90° from the posture of the closed state. That is, in the present embodiment, the first angle is about 90°. At this time, the main body 51 is roughly parallel in the up and down directions. Therefore, when the opening and closing component 50 is opened at the first angle, the main body 51 will not block the connecting pipe storage portion 33 from below. In addition, in the present embodiment, the first angle is set to about 90°. Although it is intended to reach 90°, the first angle also means a slight deviation from 90° due to shaking, etc., specifically, it means within 90°±5 degrees, preferably within 90°±3 degrees, and more preferably within 90°±1 degree.

[0110] Fig.10 2 is a cross-sectional view of the opening and closing member 50 in the open state opened at the second angle, showing the opening and closing member 50 in a cross section perpendicular to the left-right direction. Fig.10 As shown, the second retaining portion 57c, 59c contacts the stopper 32a, 34a from the rear, thereby, the opening and closing component 50 is maintained in an open state opened at the second angle. In the present embodiment, when the opening and closing component 50 is opened at the second angle, the opening and closing component 50 is located at a rotation position rotated about 135° from the closed state. That is, the second angle in the present embodiment is about 135°. At this time, the main body 51 extends in a direction inclined forward and downward from the rotation axis of the opening and closing component 50. Therefore, when the opening and closing component 50 is opened at the second angle, the main body 51 will not block the connecting pipe storage portion 33 from below. In addition, in the present embodiment, the second angle is set to about 135°. Although it is intended to reach 135°, the second angle also means that it deviates slightly from 135° due to shaking, etc., specifically, it means within 135°±5 degrees, preferably within 135°±3 degrees, and more preferably within 135°±1 degree.

[0111] Fig.11 2 is a cross-sectional view of the opening and closing component 50 during assembly and disassembly, showing a cross section of the bearing portion 59 perpendicular to the left and right direction. As described above, the cross-sectional shape of the bearing portion 59 is a C-shape. That is, a fitting opening 59d is formed on the opening and closing component 50, which penetrates the bearing portion 59 in the radial direction and communicates with the fitting recess 59a. In the present embodiment, the fitting opening 59d faces upward when the opening and closing component 50 is in the closed state. When the shaft portion 34 is fitted with the fitting recess 59a, the shaft portion 34 can pass through the fitting opening 59d. Therefore, the opening and closing component 50 can be assembled and disassembled relative to the chassis 30.

[0112] In addition, if Fig.11As shown, the side surface parallel to the left-right direction in the shaft portion 34 has a pair of planar portions 34b and a pair of curved portions 34c. The pair of planar portions 34b are planes parallel to each other. The pair of curved portions 34c are curved surfaces bent into an arc shape with the rotation axis of the opening and closing component 50 as the center, connecting the pair of planar portions 34b to each other. The interval between the planar portions 34b is smaller than the interval between the curved portions 34c. The size of the opening in the circumferential direction of the fitting opening 59d is smaller than the interval between the planar portions 34b, so that the shaft portion 34 is not easy to fall off from the bearing portion 59. In addition, as Fig.11 As shown, since the interval between the planar portions 34b is smaller than the interval between the curved portions 34c, the bearing portion 59 can be easily attached to and detached from the shaft portion 34 when it moves parallel to the planar portion 34b in the radial direction. Fig.11 As shown, when the opening and closing member 50 is opened at an angle between the first angle and the second angle, the bearing portion 59 can be detached from the shaft portion 34. Specifically, when the opening and closing member 50 in the open state opened at the first angle is lifted to the front side by the operator's hand or the like, and the second holding portions 57c and 59c contact the respective stoppers 32a and 34a from the front side, the bearing portion 59 can be detached from the shaft portion 34.

[0113] [1-2. Action]

[0114] The following describes the actions of the operator when installing the indoor unit 1 configured as above. In addition, the following describes the case where the indoor pipes 17 and 19 and the internal and external connecting pipes P1 and P2 are routed from the left side of the indoor unit 1. In addition, at the start of the operation, the opening and closing member 50 is in a closed state.

[0115] When installing the indoor unit 1 on the wall surface W, the operator first fixes the mounting plate 40 to the wall surface W. The mounting plate 40 is fixed to the wall surface W by fastening screws or the like.

[0116] Next, the operator places the indoor pipes 17 and 19 in a state of being detoured to the left in the connecting pipe housing 33. Thus, the front end 17a of the indoor liquid pipe 17 is arranged above the opening and closing member 50.

[0117] Then, the operator hooks the upper fixing claw 35 of the indoor unit 1 on the upper edge of the mounting plate 40. Thus, the indoor unit 1 is held by the mounting plate 40. In addition, the operator removes the lower cross member 28 of the decorative cover 20 to expose the opening and closing member 50.

[0118] Next, in order to connect the internal and external connecting pipes P1 and P2 to the indoor pipes 17 and 19, the operator moves the opening and closing member 50 from below the connecting pipe storage portion 33. Specifically, the operator sets the opening and closing member 50 to a state opened at the first angle or the second angle, or removes the opening and closing member 50 from the bottom frame 30.

[0119] When the opening and closing component 50 is set to the open state at the first angle, the operator grabs the main body 51 and pulls it downward. As a result, the mountain-shaped protrusion 52 of the opening and closing component 50 is disengaged from the mountain-shaped recess 36 of the chassis 30, and the opening and closing component 50 rotates downward around the rotation axis. As the opening and closing component 50 rotates, the first retaining parts 57b and 59b move backward and upward along the circumferential direction and contact the stoppers 32a and 34a. The operator further rotates the opening and closing component 50, whereby the first retaining parts 57b and 59b pass over the stoppers 32a and 34a. As a result, the opening and closing component 50 is changed to the open state at the first angle.

[0120] When the opening and closing member 50 is set to the open state at the second angle, the operator further rotates the opening and closing member 50 in the open state at the first angle forward. As a result, the second holding portions 57c and 59c move backward and upward along the circumferential direction and contact the stoppers 32a and 34a. The operator further rotates the opening and closing member 50, and the second holding portions 57c and 59c pass over the stoppers 32a and 34a. As a result, the opening and closing member 50 is changed to the open state at the second angle.

[0121] When removing the opening and closing member 50 from the chassis 30, the operator further rotates the opening and closing member 50 in the open state opened at the first angle forward, so that the second holding portions 57c and 59c contact the stoppers 32a and 34a from the front. In this state, the fitting opening 59d of the bearing portion 59 formed in the opening and closing member 50 is located on the curved surface portion 34c of the shaft portion 34 formed in the chassis 30. Therefore, the operator can remove the bearing portion 59 from the shaft portion 34 by pulling the opening and closing member 50 toward the opposite side of the fitting opening 59d, that is, the front and upper direction. Thereafter, the operator moves the opening and closing member 50 to the right side and removes the cylindrical portion 57 from the insertion portion 32. Thus, the opening and closing member 50 is removed from the chassis 30.

[0122] After moving the opening and closing member 50 from below the connecting pipe storage portion 33, the operator performs the connection operation between the indoor pipes 17 and 19 and the internal and external connecting pipes P1 and P2. Since the movement of the opening and closing member 50 makes it easy to secure the working space, the operator can easily perform the connection operation.

[0123] After the pipe connection operation is completed, the operator puts the opening and closing member 50 in the closed state again. When the opening and closing member 50 is removed for the pipe connection operation, the operator moves the opening and closing member 50 so that the cylindrical portion 57 covers the insertion portion 32 from the right side. Then, the operator pushes the fitting opening 59d onto the curved surface portion 34c of the shaft portion 34 from the upper front. As a result, the shaft portion 34 is fitted into the fitting recess 59a through the fitting opening 59d, and the opening and closing member 50 is mounted on the chassis 30 in the open state opened at the first angle.

[0124] When closing the opening and closing member 50 opened at the first angle or the second angle, the operator rotates the opening and closing member 50 upward and backward. As a result, the mountain-shaped protrusion 52 of the opening and closing member 50 is engaged with the mountain-shaped recess 36 of the bottom frame 30, and the opening and closing member 50 is maintained in the closed state.

[0125] Next, the operator hooks the lower fixing claw 38 formed on the lower fixing portion 37 of the bottom frame 30 on the first hook portion 41. At the same time, the operator sets the opening and closing member fixing claw 53 formed on the opening and closing member 50 to a state of being locked on the second hook portion 43. Thus, the shaking and displacement of the indoor unit 1 can be suppressed.

[0126] Next, the operator inserts the fastener into the long hole 39 formed in the lower fixing portion 37 of the base frame 30, and fastens the lower fixing portion 37 to the mounting plate 40. Similarly, the operator inserts the fastener into the fastening hole 56 formed in the opening and closing member 50 and the threaded hole 47 formed in the mounting plate 40, and fastens the inclined surface 55 of the opening and closing member 50 to the fastening surface 45 of the mounting plate 40. Thus, the indoor unit 1 is fixed, and the shaking and displacement of the indoor unit 1 are further suppressed. In addition, since the inclined surface 55 faces obliquely downward and forward, it is easy for the operator to fasten the inclined surface 55 to the fastening surface 45.

[0127] Next, the operator attaches the lower cross beam 28 to the indoor unit 1. Thus, the work of installing the indoor unit 1 is completed.

[0128] [1-3. Effects, etc.]

[0129] As described above, in the present embodiment, the air conditioner includes a wall-mounted indoor unit 1 mounted on the wall surface W via the mounting plate 40. The indoor unit 1 includes: a housing 10 that accommodates the indoor heat exchanger 11; an indoor liquid pipe 17 that is led to the outside from the back portion 31 of the housing 10; and an indoor gas pipe 19. A connecting pipe receiving portion 33 that can receive the indoor liquid pipe 17 and the indoor gas pipe 19 is formed on the back portion 31, and an opening and closing member 50 that is opened and closed by rotation is provided below the connecting pipe receiving portion 33. The opening and closing member 50 includes an opening and closing member fixing claw 53, which can be kept in a state of being locked on the mounting plate 40 in a closed state, and can be exposed below by changing to an open state.

[0130] Thus, when installing the indoor unit 1, the connection pipe storage portion 33 can be exposed at the bottom, and after installing the indoor unit 1, the opening and closing member fixing claw 53 can be in a state of being locked on the mounting plate 40. Therefore, the air conditioner of this embodiment can suppress the shaking of the indoor unit 1 after installation, and can easily connect the indoor side pipes 17 and 19 and the internal and external connection pipes P1 and P2 when the indoor unit 1 is installed.

[0131] As described in this embodiment, the opening and closing component 50 can also be constructed with a first retaining portion 57b, 59b, which contacts the first stop member 32a, the second stop member 34a formed on the base frame 30 of the shell 10, and holds the opening and closing component 50 in the open state opened at the first angle.

[0132] Thus, the operator does not need to continuously press the opening and closing member 50, and can keep the opening and closing member 50 in an open state. Therefore, the air conditioner of this embodiment can easily connect the indoor pipes 17 and 19 and the internal and external connecting pipes P1 and P2 when installing the indoor unit 1. In particular, in this embodiment, since the first angle is about 90 degrees, it is easy to expose the front end 17a of the indoor liquid pipe 17 at the bottom, and the connection operation is easy.

[0133] As described in this embodiment, the opening and closing component 50 may also have a second retaining portion 57c, 59c, which contacts the first stopper 32a, the second stopper 34a formed on the base frame 30 of the shell 10, and holds the opening and closing component 50 in the open state opened at the second angle.

[0134] Thus, the operator does not need to continuously press the opening and closing member 50, and can keep the opening and closing member 50 in the state of being opened at the second angle different from the first angle. Therefore, the air conditioner of this embodiment can easily connect the indoor side pipes 17 and 19 and the internal and external connection pipes P1 and P2 when installing the indoor unit 1. In particular, in this embodiment, the second angle is about 135°, which is larger than the first angle, so the connection operation can be easily performed.

[0135] As described in the present embodiment, the opening and closing member 50 may be attachable to and detachable from the housing 10 .

[0136] Thus, when installing the indoor unit 1, the opening and closing member 50 can be removed to expose the connection pipe storage portion 33 at the bottom, and after installing the indoor unit 1, the opening and closing member fixing claw 53 can be in a state of being locked on the mounting plate 40. Therefore, the air conditioner of this embodiment can suppress the shaking of the indoor unit 1 after installation, and can easily connect the indoor side pipes 17 and 19 and the internal and external connection pipes P1 and P2 when the indoor unit 1 is installed.

[0137] As described in this embodiment, the opening and closing component 50 may also have a hollow cylindrical cylindrical portion 57 and a bearing portion 59 with a C-shaped cross-section coaxially arranged with the cylindrical portion 57, and the base frame 30 of the shell 10 may also have an insertion portion 32 inserted into the cylindrical portion 57, and an axis portion 34 engaged with the bearing portion 59.

[0138] Thus, the opening and closing member 50 can be rotatably mounted relative to the housing 10 with a simple structure, and the opening and closing member 50 can also be detached. Therefore, the air conditioner of this embodiment can suppress the shaking of the indoor unit 1 after installation with a simple structure, and can easily connect the indoor side pipes 17 and 19 and the internal and external connection pipes P1 and P2 when the indoor unit 1 is installed.

[0139] As described in this embodiment, a pair of flat plane portions 34b arranged parallel to each other and a pair of curved surface portions 34c bent outward to connect the plane portions 34b are provided on the side surface of the shaft portion 34, and the interval between the plane portions 34b is smaller than the interval between the curved surface portions 34c.

[0140] Thus, the bearing portion 59 can be easily attached to and detached from the shaft portion 34 when the bearing portion 59 moves parallel to the flat surface portion 34b. Therefore, the air conditioner of the present embodiment can suppress the opening and closing member 50 from accidentally falling off.

[0141] As described in the present embodiment, the fastening hole 56 may be formed in the opening and closing member 50 so that the opening and closing member 50 and the mounting plate 40 can be fastened when the opening and closing member 50 is in the closed state.

[0142] Thereby, the air conditioner of this embodiment can suppress the shaking of the indoor unit 1 after installation more easily.

[0143] As described in the present embodiment, the opening and closing member 50 may be provided below the front end 17 a of the indoor liquid pipe 17 which is housed in the connection pipe housing portion 33 .

[0144] Thus, the air conditioner of this embodiment can easily connect the indoor liquid pipe 17 and the internal and external connection pipe P1 even when the front end 17a of the indoor liquid pipe 17 is covered and hidden from below by the opening and closing member 50.

[0145] (Other Embodiments)

[0146] As described above, the first embodiment is described as an example of the technology in the present invention. However, the technology of the present invention is not limited thereto, and can also be applied to embodiments that have been changed, replaced, added, omitted, etc. In addition, each component described in the first embodiment can also be combined to form a new embodiment.

[0147] Therefore, other embodiments are exemplified below.

[0148] In Embodiment 1, as an example of the opening and closing component 50, a component disposed below the front end 17a of the indoor liquid piping 17 is described, but this is only an example. The opening and closing component 50 is located below the connecting piping storage section 33, as long as the opening and closing component fixing claw 53 can be kept in a state of being locked on the mounting plate 40. Therefore, the setting position of the opening and closing component 50 is not limited to below the front end 17a of the indoor liquid piping 17. The opening and closing component 50 may be disposed below the front end 19a of the indoor gas piping 19, for example. In addition, the opening and closing component 50 may also be disposed at a position in the connecting piping storage section 33 that does not overlap with the front ends 17a and 19a of the indoor piping 17 and 19 when viewed from above. Even in this case, by opening the opening and closing component 50, the connecting piping storage section 33 is exposed below, so it is easy to ensure the working space for connecting the front ends 17a and 19a of the indoor piping 17 and 19 and the internal and external connecting piping P1 and P2. However, when the opening and closing member 50 is located below the front ends 17 a and 19 a of the indoor pipes 17 and 19 , the effect of improving the workability by opening the opening and closing member 50 can be enhanced.

[0149] In Embodiment 1, the indoor unit 1 is described as having a configuration including one opening and closing member 50 , but this is merely an example, and a plurality of opening and closing members 50 may be provided.

[0150] That is, a plurality of opening and closing members 50 may be provided in the indoor unit 1 .

[0151] Thus, when connecting the indoor inner pipes 17 and 19 and the internal and external connecting pipes P1 and P2, a wide working space can be ensured by opening the plurality of opening and closing components 50. However, in Embodiment 1, compared with the case where the plurality of opening and closing components 50 are provided, the lower fixing portion 37 away from the front end 17a and 19a of the indoor inner pipes 17 and 19 is not replaced with the opening and closing component 50, thereby preventing the workability from being impaired and suppressing the complexity of the structure.

[0152] The above-described embodiments are intended to illustrate the technology in the present invention, and therefore various changes, substitutions, additions, omissions, etc. can be made within the scope of the claims or their equivalents.

[0153] [Structure supported by the above-mentioned embodiment]

[0154] The above-mentioned embodiment supports the following structure.

[0155] (Note)

[0156] (Technique 1) The air conditioner of Technique 1 includes a wall-mounted indoor unit mounted on a wall surface via a mounting plate. The indoor unit includes: a housing for storing an indoor heat exchanger and indoor piping leading to the outside from the back of the housing, a connecting piping storage portion capable of storing the indoor piping is formed on the back, and an opening and closing component that is opened and closed by rotation is provided below the connecting piping storage portion. The opening and closing component has a fixing claw, which can keep the fixing claw in a state of being locked to the mounting plate in a closed state, and can expose the connecting piping storage portion below by changing to an open state.

[0157] Thus, when installing the indoor unit, the connection pipe storage portion can be exposed at the bottom, and after the indoor unit is installed, the fixing claw can be locked on the mounting plate. Therefore, the air conditioner of the first technique can suppress the shaking of the indoor unit after installation, and can easily connect the indoor pipe and the internal and external connection pipe when installing the indoor unit.

[0158] (Technique 2) In the air conditioner of Technique 2, in the air conditioner described in Technique 1, the opening and closing member has a first holding portion that contacts the casing and can hold the opening and closing member in an open state opened at a first angle.

[0159] Thus, the operator does not need to continuously press the opening and closing member, and can keep the opening and closing member in an open state. Therefore, the air conditioner of the second technique can easily connect the indoor pipe and the internal and external connecting pipe when installing the indoor unit.

[0160] (Technique 3) In the air conditioner of Technique 3, in the air conditioner described in Technique 2, the opening and closing member has a second holding portion that contacts the casing and can hold the opening and closing member in an open state opened at a second angle.

[0161] Thus, the operator does not need to continuously press the opening and closing member, and can keep the opening and closing member in a state of being opened at a second angle different from the first angle. Therefore, the air conditioner of the third technique can easily connect the indoor piping and the internal and external connecting piping when installing the indoor unit.

[0162] (Technique 4) In the air conditioner of Technique 4, in the air conditioner according to any one of Techniques 1 to 3, the opening and closing member is attachable to and detachable from the casing.

[0163] Thus, when installing the indoor unit, the opening and closing component can be removed to expose the connection pipe storage portion at the bottom, and after installing the indoor unit, the fixing claw can be locked on the mounting plate. Therefore, the air conditioner of the fourth technique can suppress the shaking of the indoor unit after installation, and can easily connect the indoor side pipe and the internal and external connection pipe when installing the indoor unit.

[0164] (Technology 5) In the air conditioner of Technology 5, in the air conditioner described in any one of Technologies 1 to 4, the opening and closing component has: a cylindrical portion with a hollow cylindrical shape; and a bearing portion with a C-shaped cross-section arranged coaxially with the cylindrical portion, and the shell has an insertion portion inserted into the cylindrical portion and a shaft portion engaged with the bearing portion.

[0165] Thus, the opening and closing member can be rotatably mounted relative to the housing with a simple structure, and the opening and closing member can also be assembled and disassembled. Therefore, the air conditioner of the fifth technique can suppress the shaking of the indoor unit after installation with a simple structure, and can easily connect the indoor side piping and the internal and external connection piping when installing the indoor unit.

[0166] (Technology 6) In the air conditioner of Technology 6, in the air conditioner described in Technology 5, a pair of flat plane portions arranged parallel to each other are provided on the side of the shaft portion; and a pair of curved surface portions bent outward and connecting the plane portions, and the interval between the plane portions is smaller than the interval between the curved surface portions.

[0167] Thus, the bearing portion can be easily attached to and detached from the shaft portion when the bearing portion moves parallel to the flat portion. Therefore, the air conditioner of the sixth technique can suppress accidental detachment of the opening and closing member.

[0168] (Technique 7) In the air conditioner of Technique 7, in any one of Techniques 1 to 6, a fastening hole is formed in the opening and closing member for fastening the opening and closing member and the mounting plate when the opening and closing member is in a closed state.

[0169] As a result, the air conditioner according to the seventh technique can more easily suppress the shaking of the indoor unit after installation.

[0170] (Technique 8) In the air conditioner of Technique 8, in any one of Techniques 1 to 7, the opening and closing member is provided below the front end of the indoor pipe accommodated in the connection pipe accommodating portion.

[0171] Thus, the air conditioner of the eighth technique can easily connect the indoor liquid pipe and the internal and external connection pipe even when the front end of the indoor pipe is covered and hidden by the opening and closing member from below.

[0172] (Technique 9) In the air conditioner of Technique 9, in the air conditioner according to any one of Techniques 1 to 8, a plurality of opening and closing members are provided in the indoor unit.

[0173] Thus, in the air conditioner of the ninth technique, when connecting the indoor pipe and the internal and external connecting pipe, a wide working space can be ensured by opening a plurality of opening and closing members.

[0174] Industrial Applicability

[0175] The present invention is applicable to an air conditioner. Specifically, the present invention can be applied to, for example, a household or business air conditioner having a wall-mounted indoor unit.

Claims

1. An air conditioner, characterized in that: Including wall-mounted indoor units that can be installed on the wall via a mounting plate. The indoor unit comprises: a housing for accommodating an indoor heat exchanger; and indoor piping extending from the back of the housing to the outside. A connecting pipe receiving portion capable of receiving the indoor pipe is provided on the back side of the housing. An opening and closing member that is opened and closed by rotation is provided below the connecting pipe storage portion. The opening and closing member has a fixing claw, The opening and closing member can hold the fixing claw in a state locked to the mounting plate in a closed state, and can expose the connecting pipe housing portion downward in an open state.

2. The air conditioner according to claim 1, characterized in that: The opening and closing member includes a first holding portion that contacts the housing and is capable of holding the opening and closing member in the open state in which the opening and closing member is opened at a first angle.

3. The air conditioner according to claim 2, characterized in that: The opening and closing member includes a second holding portion that contacts the housing and is capable of holding the opening and closing member in the open state in which the opening and closing member is opened at a second angle.

4. The air conditioner according to claim 1, characterized in that: The opening and closing member is detachable from the housing.

5. The air conditioner according to claim 4, characterized in that: The opening and closing member comprises: a hollow cylindrical cylindrical portion; and a bearing portion having a C-shaped cross section and arranged coaxially with the cylindrical portion. The housing includes an insertion portion into which the cylindrical portion can be inserted, and a shaft portion that fits with the bearing portion.

6. The air conditioner according to claim 5, characterized in that: A pair of flat plane portions arranged parallel to each other are provided on the side surface of the shaft portion; and a pair of curved surface portions are bent outward and connect the plane portions to each other. The interval between the planar portions is smaller than the interval between the curved surface portions.

7. The air conditioner according to claim 1, characterized in that: The opening and closing member is formed with a fastening hole capable of fastening the opening and closing member and the mounting plate when the opening and closing member is in the closed state.

8. The air conditioner according to any one of claims 1 to 7, characterized in that: The opening and closing member is provided below the front end of the indoor pipe in a state of being accommodated in the connecting pipe accommodating portion.

9. The air conditioner according to any one of claims 1 to 7, characterized in that: The indoor unit is provided with a plurality of the opening and closing components.

Images