Air conditioner

Abstract

To provide an air conditioner that enables easy connection between indoor side piping of an indoor unit and inside / outside connection piping while suppressing looseness of the indoor unit after installation.SOLUTION: An air conditioner includes a wall-mounted type indoor unit mounted onto a wall surface via an installation plate. The indoor unit includes: a casing that accommodates an indoor heat exchanger; and indoor side piping drawn out from a back surface of the casing to outside. A connection piping accommodation part capable of accommodating the indoor side piping is formed on the back surface. An opening / closing member that opens / closes by rotating is provided below the connection piping accommodation part. The opening / closing member includes a fixation claw, and has a configuration capable of holding the fixation claw in the state where it is locked on the installation plate while being in the closed state and capable of exposing the connection piping accommodation part downwardly when becoming the opened state.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to an air conditioner. [Background technology]

[0002] Patent Document 1 discloses an installation device for an air conditioner that can facilitate the connection of refrigerant piping. This installation device for an air conditioner includes an opening formed in the bottom surface of the main body, and a cover that covers the opening. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 08-285365 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides an air conditioner in which rattling of the indoor unit after installation is suppressed and the indoor side piping of the indoor unit and the indoor / outdoor connecting piping can be easily connected. [Means for solving the problem]

[0005] The air conditioner of the present disclosure comprises a wall-mounted indoor unit that is attached to a wall surface via a mounting plate, the indoor unit having a housing that stores an indoor heat exchanger, and indoor piping that is pulled out to the outside from the back of the housing, the back of which is formed with a connection piping storage section capable of storing the indoor piping, and an opening / closing member that opens and closes by rotating is provided below the connection piping storage section, the opening / closing member having a fixed claw that, in a closed state, can hold the fixed claw in a state engaged with the mounting plate, and is configured to be able to expose the connection piping storage section downward when in the open state. Effect of the Invention

[0006] In the air conditioner disclosed herein, the connection pipe storage section can be exposed downward when the indoor unit is installed, and the fixing claws can be locked to the mounting plate after the indoor unit is installed. This makes it possible to easily connect the indoor side pipe and the inside / outside connection pipe when the indoor unit is installed while suppressing rattling of the indoor unit after installation. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of an indoor unit of an air conditioner according to a first embodiment. [Diagram 2] A perspective view of the indoor unit from the rear side [Diagram 3] Cross-sectional view of indoor unit [Figure 4] Underside view of indoor unit [Diagram 5] FIG. 3 is a perspective view of the opening / closing member in a closed state; [Figure 6] FIG. 3 is a perspective view of the opening / closing member in an open state; [Figure 7] A perspective view of the cylindrical portion [Figure 8] Perspective view of the bearing [Figure 9] 1 is a cross-sectional view of an opening / closing member in an open state opened at a first angle; [Figure 10] 1 is a cross-sectional view of an opening / closing member in an open state opened at a second angle; [Figure 11] Cross-sectional view of the opening and closing member when attaching and detaching DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] (The knowledge and other information that formed the basis of this disclosure) At the time the inventors came up with the idea of ​​this disclosure, there was technology in the technical field of air conditioners that involved creating an opening on the bottom surface of the body of the indoor unit, removing a detachable cover over the opening, and easily connecting the piping of the indoor unit to the piping of the outdoor unit. However, when such a cover is provided, there is a problem that the improvement of workability is limited because attaching and removing the cover is time-consuming. In addition, the inventors discovered a problem that the indoor unit is prone to rattling if the indoor unit and the mounting plate are not fixed at the position where the cover is provided. In order to solve these problems, the inventors have come up with the subject matter of the present disclosure. Therefore, the present disclosure provides an air conditioner that makes it easy to connect the indoor side piping of the indoor unit to the indoor / outdoor connecting piping while suppressing rattling of the indoor unit after installation.

[0009] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially the same configuration may be omitted. This is to avoid the following explanation becoming more redundant than necessary and to facilitate understanding by those skilled in the art. It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0010] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to the drawings. [1-1. Configuration] [1-1-1. Overall configuration of indoor unit] FIG 1 is a perspective view of an indoor unit 1 of an air conditioner according to embodiment 1, showing the indoor unit 1 as seen from the front. FIG 2 is a perspective view of the indoor unit 1, showing the indoor unit 1 as seen from the rear. FIG 3 is a cross-sectional view of the indoor unit 1, showing the indoor unit 1 in a cross section perpendicular to the left-right direction. Note that in the drawings, the symbol X indicates the right direction of the indoor unit 1, the symbol Y indicates the front direction of the indoor unit 1, and the symbol Z indicates the upward direction of the indoor unit 1. Furthermore, in the following description, directions such as up-down, left-right, front-rear, and rear refer to directions based on the indoor unit 1 unless otherwise specified.

[0011] The indoor unit 1 is a so-called wall-mounted indoor unit that is attached to an indoor wall W. The indoor unit 1 has a box-shaped housing 10 that is long in the left-right direction. The housing 10 houses an indoor heat exchanger 11, a blower 13, etc. inside (see FIG. 3).

[0012] As shown in Figs. 1 and 2, the housing 10 includes a decorative cover 20 and a frame 30. The decorative cover 20 is a resin member that covers the indoor heat exchanger and the blower from the left and right, top and bottom, and front. The rear side of the decorative cover 20, i.e., the back side, is open. In detail, the decorative cover 20 has a front panel 22 that constitutes the front surface of the housing 10, a breathable top panel 24 that constitutes the top surface of the housing 10, a pair of side panels 26 that constitute the left and right side surfaces of the housing 10, and a lower rail 28 that constitutes the bottom surface of the housing 10. Each of the members 22, 24, 26, and 28 that constitute the decorative cover 20 can be attached and detached individually.

[0013] An air outlet 21 that communicates between the inside and outside of the decorative cover 20 is formed on the front side of the decorative cover 20. The air outlet 21 is an opening formed over substantially the entire left-right direction of the decorative cover 20. The indoor unit 1 air-conditions the room by blowing air that has exchanged heat with the refrigerant in the indoor heat exchanger 11 out of the air outlet 21 into the room. In addition, the air outlet 21 is provided with a flap 23 that adjusts the air direction.

[0014] 2 and 3, the frame 30 is a resin member that closes an opening on the rear side of the decorative cover 20. The frame 30 has a rear portion 31 that constitutes the rear side of the housing .

[0015] As shown in Fig. 2, auxiliary piping 15 is drawn out from the upper right part of rear portion 31 to the outside of housing 10. Auxiliary piping 15 is a bundle of indoor liquid piping 17 and indoor gas piping 19 connected to indoor heat exchanger 11. Indoor liquid piping 17 and indoor gas piping 19 of auxiliary piping 15 are connected to refrigerant piping of the outdoor unit via indoor / external connection piping P1, P2 (see Fig. 6). This forms a refrigeration circuit of the air conditioner. Indoor liquid piping 17 and indoor gas piping 19 in this embodiment correspond to the "indoor piping" of this disclosure.

[0016] A connection pipe storage section 33 is formed in the lower part of the rear portion 31, recessed forward over almost the entire left-right direction. The connection pipe storage section 33 stores the auxiliary pipe 15 and the interior / exterior connection pipes P1, P2 when the auxiliary pipe 15 drawn out from the upper right part of the rear portion 31 is routed toward the left side. The indoor side pipes 17, 19 and the interior / exterior connection pipes P1, P2 are routed toward the left side within the connection pipe storage section 33, for example, when a hole formed in the wall surface W for passing the interior / exterior connection pipes P1, P2 is located on the left side with respect to the installation position of the indoor unit 1.

[0017] The underframe 30 has upper fixing claws 35. The upper fixing claws 35 are protrusions formed downward from the upper end of the underframe 30. The upper fixing claws 35 are hooked from above onto the upper edge of a mounting plate 40 which is fixed to a wall surface W. In this way, the indoor unit 1 is supported by the mounting plate 40. In this embodiment, a pair of upper fixing claws 35 are formed at positions symmetrical with respect to the center of the indoor unit 1 in the left-right direction. The mounting plate 40 is a plate-shaped member made of sheet metal.

[0018] FIG. 4 is a bottom view of the indoor unit 1, showing a state in which the decorative cover 20 has been removed from the indoor unit 1 attached to the installation plate 40. A lower fixing part 37 is formed at the lower end of the underframe 30. The lower fixing part 37 is a horizontal, flat-plate-shaped structure extending rearward from the lower end of the underframe 30. The lower fixing part 37 is located below the connection pipe storage part 33. Therefore, as shown in FIG. 4, when the indoor pipes 17, 19 are stored in the connection pipe storage part 33, the lower fixing part 37 is located below the indoor pipes 17, 19. In this embodiment, one lower fixing part 37 is formed in the underframe 30. Also, in this embodiment, the lower fixing part 37 is located below the upper fixing claw 35 on the right side.

[0019] The lower fixing portion 37 is formed with a lower fixing claw 38 and an elongated hole 39. The lower fixing claw 38 is a protrusion that protrudes downward from the rear end of the lower fixing portion 37. As shown in FIG. 3, the lower fixing claw 38 is hooked from above onto a first hook portion 41 of the mounting plate 40. 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, and is thereby hooked onto the first hook portion 41.

[0020] The long hole 39 is a hole that is long in the left-right direction and penetrates the lower fixing part 37. The lower fixing part 37 is fastened to the mounting plate 40 by a screw (not shown) or the like that is inserted into the long hole 39.

[0021] [1-1-2. Configuration of opening and closing components] 4, an opening / closing member 50 is provided below the connection pipe storage section 33. That is, the opening / closing member 50 is located below the indoor side pipe 17 stored in the connection pipe storage section 33. In this embodiment, the opening / closing member 50 is located below the tip 17a of the indoor side liquid pipe 17.

[0022] The opening / closing member 50 is a resin member. The opening / closing member 50 is provided at a position that is generally symmetrical to the lower fixing part 37 with respect to the center of the indoor unit 1 in the left-right direction. In other words, the opening / closing member 50 is located below the upper fixing claw 35 on the left side.

[0023] FIG. 5 is a perspective view of the opening / closing member 50, showing the opening / closing member 50 in a closed state. FIG. 6 is a perspective view of the opening / closing member 50, showing the opening / closing member 50 in an open state. As shown in FIG. 5 and FIG. 6, the opening / closing member 50 is attached to the underframe 30 so as to be rotatable about a rotation axis in the left-right direction. When the opening / closing member 50 is rotated to a closed state, it covers from below a portion of the connection pipe storage section 33 where the tip 17a of the indoor liquid pipe 17 is disposed. When the opening / closing member 50 is rotated to an open state, it is configured so that the tip 17a can be exposed downward. Hereinafter, the direction around the rotation axis of the opening / closing member 50 is referred to as the circumferential direction, and the direction perpendicular to the circumferential direction is referred to as the radial direction.

[0024] 5 and 6, the opening / closing member 50 has a generally flat plate-shaped main body 51. The main body 51 is provided generally along the radial direction. The main body 51 is provided with a plurality of reinforcing ribs.

[0025] At both ends in the left-right direction of the main body 51, angled protrusions 52 are formed that protrude outward in the left-right direction. The angled protrusions 52 have a substantially triangular cross section. The angled protrusions 52 fit into angled recesses 36 formed in the frame 30 and recessed outward in the left-right direction. This holds the opening / closing member 50 in a closed state. When the opening / closing member 50 is in a closed state, the main body 51 is in a position that extends substantially horizontally toward the rear of the rotation shaft (i.e., the position in Figures 3, 4, and 5).

[0026] As shown in Figs. 4 to 6, an opening / closing member fixing claw 53 is formed at the radially outer end of the main body 51. The opening / closing member fixing claw 53 protrudes in a direction perpendicular to the main body 51, i.e., in the circumferential direction. When the opening / closing member 50 is in a closed state, the opening / closing member fixing claw 53 protrudes downward. When the opening / closing member 50 is in a closed state, the opening / closing member fixing claw 53 can be inserted from above into an opening formed in the second hook portion 43 of the mounting plate 40 (see Fig. 4). As shown in Figs. 4 and 6, the second hook portion 43 is formed by bending the lower end of the mounting plate 40 forward, similar to the first hook portion 41. An opening is formed in the center of the second hook portion 43. That is, when the indoor unit 1 is attached to the wall surface W, the opening / closing member fixing claw 53 is engaged with the second hook portion 43. The opening / closing member fixing claw 53 in this embodiment is an example of a "fixing claw" in the present disclosure.

[0027] When the indoor unit 1 is installed and used for normal air conditioning, the opening / closing member 50 is in a closed state. Therefore, the opening / closing member fixing claw 53 of the opening / closing member 50 is engaged with the second hook portion 43 of the mounting plate 40 after the indoor unit 1 is installed, suppressing rattling or displacement of the indoor unit 1.

[0028] As shown in Figs. 4 to 6, an inclined surface 55 is formed at the radially outer end of the main body 51. The inclined surface 55 is a flat portion that faces forward and downward when the opening / closing member 50 is in a closed state. A fastening hole 56 that is long in the left-right direction and penetrates the inclined surface 55 is formed in the inclined surface 55. When the opening / closing member 50 is in a closed state, the inclined surface 55 is in surface contact with the fastening surface 45 formed in the mounting plate 40. As shown in Fig. 6, the fastening surface 45 is formed by bending the lower end of the mounting plate 40 obliquely upward and forward. In addition, a screw hole 47 for fastening a fastener such as a screw or a bolt is formed in the fastening surface 45. When the opening / closing member 50 is closed, the fastening hole 56 and the screw hole 47 of the fastening surface 45 overlap. That is, when the opening / closing member 50 is in a closed state, the inclined surface 55 of the opening / closing member 50 and the fastening surface 45 of the mounting plate 40 can be fastened by a fastener through the fastening hole 56 and the screw hole 47. Fastening the inclined surface 55 to the fastening surface 45 makes it difficult for the indoor unit 1 to float from the mounting plate 40, suppressing rattling and displacement of the indoor unit 1. In addition, in this embodiment, when the opening / closing member 50 is in the closed state, the inclined surface 55 faces forward and downward, making it easy to perform the fastening work.

[0029] FIG. 7 is a perspective view of the cylindrical portion 57. As shown in FIG. 6, the cylindrical portion 57 is formed at the left end of the opening / closing member 50. The cylindrical portion 57 is a cylindrical portion in which an insertion hole 57a, which is a circular hole in a cross section perpendicular to the left-right direction, is formed. The insertion hole 57a opens toward the left. The insertion portion 32 formed in the underframe 30 is inserted into the insertion hole 57a. The insertion portion 32 is a substantially cylindrical protrusion that protrudes toward the right side.

[0030] Fig. 8 is a perspective view of the bearing portion 59. As shown in Fig. 7, the bearing portion 59 is formed at the right end of the opening / closing member 50. The bearing portion 59 is a portion having a C-shaped cross section in which a fitting recess 59a that is a circular depression is formed in a cross section perpendicular to the left-right direction. The shaft portion 34 formed on the underframe 30 fits into the inside of the fitting recess 59a. The shaft portion 34 is a columnar projection that protrudes toward the left side.

[0031] The fitting recess 59a is provided coaxially with the insertion hole 57a. That is, a virtual 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 / closing member 50 can rotate about a rotation axis parallel to the left-right direction.

[0032] 7 and 8, first retaining portions 57b, 59b and second retaining portions 57c, 59c that protrude radially outward are formed on the radially outer surfaces of the cylindrical portion 57 and the bearing portion 59. In this embodiment, the first retaining portions 57b, 59b are located on the opposite side of the main body portion 51 in the circumferential direction. The second retaining portions 57c, 59c are formed at positions shifted approximately 135° from the main body portion 51 in the circumferential direction.

[0033] In addition, stoppers 32a, 34a are formed above the insertion portion 32 and the shaft portion 34 in the frame 30. The stoppers 32a, 34a are shaped with protrusions protruding downward from the front end of a flat plate extending in the front-rear direction. The lower ends of the protrusions of the stoppers 32a, 34a are located radially inward from the tips of the respective holding portions 57b, 57c, 59b, 59c. Therefore, when the opening / closing member 50 rotates, the respective holding portions 57b, 57c, 59b, 59c come into contact with the stoppers 32a, 34a. In addition, a space is formed above the stoppers 32a, 34a. Therefore, the stoppers 32a, 34a can escape upward when pushed up from below.

[0034] FIG. 9 is a cross-sectional view of the opening / closing member 50 in an open state opened at a first angle, and shows the opening / closing member 50 in a cross section perpendicular to the left-right direction. As shown in FIG. 9, the first holding parts 57b, 59b come into contact with the stoppers 32a, 34a from the rear, so that the opening / closing member 50 is held in an open state opened at the first angle. In this embodiment, when the opening / closing member 50 is opened at the first angle, the opening / closing member 50 is in a rotation position rotated about 90° from the closed state. That is, in this embodiment, the first angle is about 90°. At this time, the main body part 51 is approximately parallel to the vertical direction. Therefore, when the opening / closing member 50 is opened at the first angle, the main body part 51 does not block the connection pipe storage part 33 from below.

[0035] FIG. 10 is a cross-sectional view of the opening / closing member 50 in an open state opened at the second angle, and shows the opening / closing member 50 in a cross section perpendicular to the left-right direction. As shown in FIG. 10, the second holding parts 57c, 59c come into contact with the stoppers 32a, 34a from the rear, so that the opening / closing member 50 is held in an open state opened at the second angle. In this embodiment, when the opening / closing member 50 is opened at the second angle, the opening / closing member 50 is in a rotation position rotated about 135° from the closed state. That is, the second angle in this embodiment is about 135°. At this time, the main body part 51 extends in a direction inclined downward toward the front from the rotation axis of the opening / closing member 50. Therefore, when the opening / closing member 50 is opened at the second angle, the main body part 51 does not block the connection pipe storage part 33 from below.

[0036] FIG. 11 is a cross-sectional view of the opening / closing member 50 during attachment / detachment, showing a cross section perpendicular to the left-right direction of the bearing portion 59. As described above, the cross-sectional shape of the bearing portion 59 is C-shaped. That is, the opening / closing member 50 is formed with a fitting opening 59d that penetrates the bearing portion 59 in the radial direction and communicates with the fitting recess 59a. In this embodiment, the fitting opening 59d faces upward when the opening / closing member 50 is in the closed state. When the shaft portion 34 fits into the fitting recess 59a, the shaft portion 34 can pass through the fitting opening 59d. Therefore, the opening / closing member 50 can be attached to and detached from the underframe 30.

[0037] As shown in FIG. 11, the side surface of the shaft portion 34 parallel to the left-right direction has a pair of flat portions 34b and a pair of curved portions 34c. The pair of flat portions 34b are parallel flat surfaces. The pair of curved portions 34c are curved surfaces curved in an arc shape centered on the rotation axis of the opening / closing member 50, and connect the pair of flat portions 34b. The distance between the flat portions 34b is smaller than the distance between the curved portions 34c. The size of the fitting opening 59d in the circumferential direction is configured to be smaller than the distance between the flat portions 34b so that the shaft portion 34 does not easily come out of the bearing portion 59. As shown in FIG. 10, the distance between the flat portions 34b is smaller than the distance between the curved portions 34c, so that the bearing portion 59 is easily attached to and detached from the shaft portion 34 when it moves parallel to the flat portions 34b in the radial direction. 11, when the opening / closing member 50 is opened at an angle between the first angle and the second angle, the bearing portion 59 can be attached to and detached from the shaft portion 34. Specifically, when the opening / closing member 50 in the open state opened at the first angle is lifted forward by an operator's hand or the like, and the second holding portions 57c, 59c come into contact with the stoppers 32a, 34a from the front side, the bearing portion 59 can be attached to and detached from the shaft portion 34.

[0038] [1-2. Operation] The following describes the actions of a worker when installing the indoor unit 1 configured as above. The following describes the case where the indoor side pipes 17, 19 and the inside / outside connection pipes P1, P2 are routed from the left side of the indoor unit 1. At the start of the work, the opening / closing member 50 is in the closed state.

[0039] When mounting the indoor unit 1 on a wall surface W, a worker 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.

[0040] Next, the worker routes the indoor side pipes 17, 19 toward the left side within the connection pipe storage section 33. As a result, the end of the indoor side liquid pipe 17 is disposed above the opening and closing member 50.

[0041] Thereafter, the worker hooks the upper fixing claws 35 of the indoor unit 1 onto the upper edge of the mounting plate 40. This causes the indoor unit 1 to be held by the mounting plate 40. The worker also removes the lower rail 28 of the decorative cover 20 to expose the opening and closing member 50.

[0042] Next, the worker moves the opening / closing member 50 from below the connection pipe storage section 33 in order to connect the interior / exterior connection pipes P1, P2 to the indoor side pipes 17, 19. Specifically, the worker opens the opening / closing member 50 at the first angle or the second angle, or removes the opening / closing member 50 from the frame 30.

[0043] When the opening / closing member 50 is opened at the first angle, the worker grasps the main body 51 and pulls it downward. This causes the angled protrusion 52 of the opening / closing member 50 to come out of the angled recess 36 of the frame 30, and the opening / closing member 50 to rotate downward about the rotation axis. As the opening / closing member 50 rotates, the first holding parts 57b and 59b move rearward and upward along the circumferential direction and come into contact with the stoppers 32a and 34a. When the worker further rotates the opening / closing member 50, the first holding parts 57b and 59b climb over the stoppers 32a and 34a. This causes the opening / closing member 50 to enter an open state opened at the first angle.

[0044] When the opening / closing member 50 is opened at the second angle, the worker rotates the opening / closing member 50, which is opened at the first angle, further forward. As a result, the second holding portions 57c, 59c move rearward and upward along the circumferential direction and come into contact with the stoppers 32a, 34a. When the worker further rotates the opening / closing member 50, the second holding portions 57c, 59c climb over the stoppers 32a, 34a. As a result, the opening / closing member 50 is opened at the second angle.

[0045] When removing the opening / closing member 50 from the underframe 30, the worker further rotates the opening / closing member 50 in the open state opened at the first angle toward the front, and brings the second holding portions 57c, 59c into contact with the stoppers 32a, 34a from the front. In this state, the fitting opening 59d of the bearing portion 59 formed in the opening / closing member 50 is located on the curved surface portion 34c of the shaft portion 34 formed in the underframe 30. Therefore, the worker can remove the bearing portion 59 from the shaft portion 34 by pulling the opening / closing member 50 in the front-upward direction, which is the opposite side of the fitting opening 59d. Thereafter, the worker moves the opening / closing member 50 to the right and removes the cylindrical portion 57 from the insertion portion 32. As a result, the opening / closing member 50 is removed from the underframe 30.

[0046] After moving the opening / closing member 50 from below the connection pipe storage section 33, the worker performs the connection work between the indoor side pipes 17, 19 and the indoor / outdoor connection pipes P1, P2. Since the movement of the opening / closing member 50 makes it easy to secure a working space, the worker can easily perform the connection work.

[0047] After the piping connection work is completed, the worker closes the opening / closing member 50 again. If the opening / closing member 50 has been removed for the piping connection work, the worker moves the opening / closing member 50 and covers the insertion portion 32 with the tubular portion 57 from the right side. After that, the worker presses the fitting opening 59d against the curved surface portion 34c of the shaft portion 34 from the upper front diagonally upward. As a result, the shaft portion 34 passes through the fitting opening 59d and fits into the fitting recess 59a, and the opening / closing member 50 is attached to the underframe 30 in an open state opened at the first angle.

[0048] When closing the opening / closing member 50 in the open state opened at the first angle or the second angle, the worker rotates the opening / closing member 50 upward toward the rear. As a result, the angled protrusion 52 of the opening / closing member 50 fits into the angled recess 36 of the frame 30, and the opening / closing member 50 is held in the closed state.

[0049] Next, the worker hooks the lower fixing claw 38 formed on the lower fixing portion 37 of the underframe 30 onto the first hook portion 41. At the same time, the worker brings the opening / closing member fixing claw 53 formed on the opening / closing member 50 into a state where it is engaged with the second hook portion 43. This suppresses rattling and displacement of the indoor unit 1.

[0050] Next, the worker inserts a fastener into the elongated hole 39 formed in the lower fixing portion 37 of the frame 30, and fastens the lower fixing portion 37 to the mounting plate 40. Similarly, the worker inserts a fastener into the fastening hole 56 formed in the opening / closing member 50 and the screw hole 47 formed in the mounting plate 40, and fastens the inclined surface 55 of the opening / closing member 50 to the fastening surface 45 of the mounting plate 40. This fixes the indoor unit 1, and rattling and displacement of the indoor unit 1 are further suppressed. In addition, since the inclined surface 55 faces diagonally downward and forward, it is easy for the worker to fasten the inclined surface 55 to the fastening surface 45.

[0051] Next, the worker attaches the lower rail 28 to the indoor unit 1. This completes the work of installing the indoor unit 1.

[0052] [1-3. Effects, etc.] As described above, in this embodiment, the air conditioner is provided with a wall-mounted indoor unit 1 that is attached to a wall surface W via a mounting plate 40, and the indoor unit 1 has a housing 10 that stores an indoor heat exchanger 11, and an indoor liquid piping 17 and an indoor gas piping 19 that are pulled out to the outside from a rear part 31 of the housing 10, and a connection piping storage section 33 capable of storing the indoor liquid piping 17 and the indoor gas piping 19 is formed in the rear part 31, and an opening / closing member 50 that opens and closes by rotating is provided below the connection piping storage section 33, and the opening / closing member 50 has an opening / closing member fixing claw 53 that can be held in a state engaged with the mounting plate 40 in the closed state, and is configured to be able to expose the connection piping storage section 33 below when in the open state. This allows the connection pipe storage section 33 to be exposed downward when installing the indoor unit 1, and the opening / closing member fixing claws 53 can be locked to the installation plate after installation of the indoor unit 1. This makes it easier to connect the indoor side pipes 17, 19 and the inside / outside connection pipes P1, P2 when installing the indoor unit 1, while suppressing rattling of the indoor unit 1 after installation.

[0053] As in this embodiment, the opening / closing member 50 may be configured to have first retaining portions 57b, 59b that contact the first stopper 32a and the second stopper 34a formed on the frame 30 of the housing 10 and retain the opening / closing member 50 in an open state opened at a first angle. This allows the worker to hold the opening / closing member 50 in the open state without continuing to press the opening / closing member 50. This makes it easier to connect the indoor side piping 17, 19 and the indoor / outdoor connection piping P1, P2 when installing the indoor unit 1. In particular, in this embodiment, since the first angle is approximately 90°, it is easy to expose the tip 17a of the indoor side liquid piping 17 downward, making it easier to perform the connection work.

[0054] As in this embodiment, the opening / closing member 50 may be configured to have second holding portions 57c, 59c that contact the first stopper 32a and the second stopper 34a formed on the frame 30 of the housing 10 and hold the opening / closing member 50 in an open state opened at a second angle. This allows the worker to hold the opening / closing member 50 in an open state at a second angle different from the first angle, without continuing to press the opening / closing member 50. This makes it easier to connect the indoor side pipes 17, 19 and the interior / exterior connection pipes P1, P2 when installing the indoor unit 1. In particular, in this embodiment, the second angle is approximately 135°, which is larger than the first angle, making it easier to perform the connection work.

[0055] As in this embodiment, the opening / closing member 50 may be configured to be detachable from the housing 10. As a result, when installing the indoor unit 1, the opening / closing member 50 can be removed to expose the connection pipe storage section 33 downward, and after installing the indoor unit 1, the opening / closing member fixing claws 53 can be locked to the installation plate. Therefore, rattling of the indoor unit 1 after installation can be suppressed, and it is possible to easily connect the indoor side pipes 17, 19 and the inside / outside connection pipes P1, P2 when installing the indoor unit 1.

[0056] As in this embodiment, the opening / closing member 50 may have a hollow cylindrical tubular portion 57 and a bearing portion 59 having a C-shaped cross section arranged coaxially with the tubular portion 57, and the frame 30 of the housing 10 may have an insertion portion 32 that is inserted into the tubular portion 57 and an axis portion 34 into which the bearing portion 59 fits. This allows the opening / closing member 50 to be rotatably attached to the housing 10 with a simple configuration, and also enables attachment and detachment of the opening / closing member 50. Therefore, with a simple configuration, rattling of the indoor unit 1 after installation can be suppressed, and the indoor side pipes 17, 19 and the interior / exterior connection pipes P1, P2 can be easily connected when the indoor unit 1 is installed.

[0057] As in this embodiment, the side surface of the shaft portion 34 may be provided with a pair of flat plane portions 34b arranged parallel to each other, and a pair of curved surface portions 34c curved outwardly to connect the planar portions 34b, and the distance between the planar portions 34b may be smaller than the distance between the curved surface portions 34c. This makes it easier for the bearing portion 59 to be attached to and detached from the shaft portion 34 when it moves parallel to the flat portion 34b. This makes it possible to prevent the opening / closing member 50 from being unintentionally detached.

[0058] As in this embodiment, the opening / closing member 50 may be configured to have fastening holes 56 formed therein, which allow the opening / closing member 50 to be fastened to the installation plate 40 when the opening / closing member 50 is in the closed state. This makes it easier to prevent the indoor unit 1 from rattling after installation.

[0059] As in this embodiment, the opening and closing member 50 may be configured to be provided below the tip 17a of the indoor side liquid piping 17 in a state where it is stored in the connection piping storage section 33. This makes it possible to easily connect the indoor side liquid piping 17 to the inside / outside connecting piping P1 even when the tip 17a of the indoor side liquid piping 17 is in a position where it is covered from below by the opening / closing member 50.

[0060] (Other embodiments) As described above, the first embodiment has been described as an example of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. In addition, it is also possible to combine the components described in the first embodiment to create new embodiments. Therefore, other embodiments will be exemplified below.

[0061] In the first embodiment, the opening / closing member 50 is described as being provided below the tip 17a of the indoor liquid piping 17, but this is only one example. The opening / closing member 50 is located below the connection piping storage section 33, and may be configured to hold the opening / closing member fixing claw 53 in a state of being engaged with the installation plate 40. Therefore, the position at which the opening / closing member 50 is provided is not limited to below the tip 17a of the indoor liquid piping 17. For example, the opening / closing member 50 may be provided below the tip 19a of the indoor gas piping 19. The opening / closing member 50 may also be provided at a position in the connection piping storage section 33 that does not overlap the tips 17a, 19a of the indoor pipings 17, 19 in a plan view. Even in such a case, the connection piping storage section 33 is exposed downward by opening the opening / closing member 50, so that it is easy to secure a working space for connecting the tips 17a, 19a of the indoor pipings 17, 19 to the inside and outside connection piping P1, P2. However, when the opening / closing member 50 is positioned below the ends 17a, 19a of the indoor side pipes 17, 19, the effect of improving workability by opening the opening / closing member 50 can be increased.

[0062] In the first embodiment, the indoor unit 1 has been described as being configured to include one opening / closing member 50, but this is just one example. A plurality of opening / closing members 50 may be provided.

[0063] In other words, the indoor unit 1 may be configured to be provided with a plurality of opening and closing members 50. As a result, when connecting each indoor side pipe 17, 19 to the inside / outside connection pipe P1, P2, a large work space can be secured by opening the multiple opening / closing members 50. However, in the first embodiment, compared to the case where multiple opening / closing members 50 are provided, by not replacing the lower fixing parts 37 located away from the ends 17a, 19a of each indoor side pipe 17, 19 with the opening / closing members 50, the complexity of the configuration is suppressed without impairing workability.

[0064] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, and the like can be made within the scope of the claims or their equivalents.

[0065] [Configuration supported by the above embodiment] The above embodiment supports the following configurations.

[0066] (Additional Note) (Technology 1) An air conditioner comprising a wall-mounted indoor unit that is attached to a wall surface via a mounting plate, the indoor unit having a housing that stores an indoor heat exchanger, and indoor piping that is pulled out to the outside from the back of the housing, a connection piping storage section capable of storing the indoor piping is formed on the back, and an opening / closing member that opens and closes by rotating is provided below the connection piping storage section, the opening / closing member has a fixed claw that can be held in a state in which the fixed claw is engaged with the mounting plate in a closed state, and is configured to be able to expose the connection piping storage section below when in an open state.

[0067] This allows the connection pipe storage section to be exposed downward when the indoor unit is installed, and the fixing claws can be locked to the mounting plate after the indoor unit is installed. This makes it easy to connect the indoor side pipes and the inside / outside connection pipes when the indoor unit is installed, while suppressing rattling of the indoor unit after installation.

[0068] (Technical 2) The air conditioner according to Technical 1, wherein the opening / closing member has a first holding portion that contacts the housing and holds the opening / closing member in an open state opened at a first angle.

[0069] This allows the worker to hold the opening / closing member in the open state without having to continue pressing the opening / closing member, which makes it easier to connect the indoor side piping and the indoor / outdoor connecting piping when installing the indoor unit.

[0070] (Technical Technique 3) The air conditioner according to Technical Technique 2, wherein the opening / closing member has a second holding portion that contacts the housing and holds the opening / closing member in an open state opened at a second angle.

[0071] This allows the worker to hold the opening / closing member in an open state at the second angle different from the first angle without continuing to press the opening / closing member, making it easier to connect the indoor side piping and the indoor / outdoor connection piping when installing the indoor unit.

[0072] (Technical Aspect 4) The air conditioner according to any one of Technical Aspects 1 to 3, wherein the opening and closing member is detachable from the housing.

[0073] As a result, when installing the indoor unit, the opening and closing member can be removed to expose the connection pipe storage section downward, and after the indoor unit is installed, the fixing claws can be locked to the mounting plate. This makes it possible to easily connect the indoor side pipes and the inside and outside connection pipes when installing the indoor unit while suppressing rattling of the indoor unit after installation.

[0074] (Technology 5) An air conditioner described in any one of Technologies 1 to 4, wherein the opening / closing member has a hollow cylindrical tubular portion and a bearing portion with a C-shaped cross section arranged coaxially with the tubular portion, and the housing has an insertion portion that is inserted into the tubular portion and an axis portion into which the bearing portion fits.

[0075] This allows the opening and closing member to be rotatably attached to the housing with a simple configuration, and also makes it possible to attach and detach the opening and closing member. Therefore, with a simple configuration, it is possible to easily connect the indoor side piping and the inside / outside connecting piping when installing the indoor unit while suppressing rattling of the indoor unit after installation.

[0076] (Technology 6) An air conditioner as described in Technology 5, in which a pair of flat plane portions parallel to each other and a pair of curved surface portions curved outwardly to connect the planar portions are provided on the side of the shaft portion, and the distance between the planar portions is smaller than the distance between the curved surface portions.

[0077] This makes it easier for the bearing portion to be attached to and detached from the shaft portion when moved parallel to the flat portion, thereby making it possible to prevent the opening / closing member from being unintentionally detached.

[0078] (Technology 7) An air conditioner described in any one of Technologies 1 to 6, wherein the opening / closing member is formed with a fastening hole that allows the opening / closing member to be fastened to the mounting plate when the opening / closing member is in a closed state.

[0079] This makes it even easier to prevent the indoor unit from rattling after installation.

[0080] (Technical Aspect 8) The air conditioner according to any one of Technical Aspects 1 to 7, wherein the opening and closing member is provided below a tip of the indoor side pipe in a state where the indoor side pipe is stored in the connection pipe storage section.

[0081] This makes it possible to easily connect the indoor side liquid piping and the indoor / outdoor connecting piping even when the tip of the indoor side piping is in a position where it is covered from below by the opening and closing member.

[0082] (Technical Aspect 9) The air conditioner according to any one of Technical Aspects 1 to 8, wherein the indoor unit is provided with a plurality of the opening and closing members.

[0083] As a result, when connecting the indoor side piping and the indoor / outdoor connecting piping, a large working space can be secured by opening the multiple opening and closing members. [Industrial Applicability]

[0084] The present disclosure is applicable to air conditioners, specifically to home or commercial air conditioners that are equipped with wall-mounted indoor units. [Explanation of symbols]

[0085] 1 Indoor unit 10. Chassis 11 Indoor heat exchanger 13 Blower 15 Auxiliary piping 17 Indoor liquid piping (indoor piping) 17a Tip 19 Indoor gas piping (indoor piping) 19a Tip 20 Makeup Cover 21 Air outlet 22 Front Panel 23 Flap 24 Top Panel 26 Side Panel 28 Lower rail 30 Frame 31 Back part 32 Insertion section 32a First stopper 33 Connection pipe storage section 34 Shaft 34a Second stopper 34b Plane part 34c curved part 35 Upper fixed claw 36 Mountain-shaped recess 37 Lower fixing part 38 Lower fixing claw 39 long hole 40 Mounting plate 41 First hook part 43 Second hook part 45 Fastening Surface 47 Screw hole 50 Opening and closing members 51 Main body 52 Angled protrusion 53 Opening and closing member fixing claw 55 Slope 56 Fastening hole 57 Cylindrical section 57a Insertion hole 57b 1st holding part 57c 2nd holding part 59 Bearing section 59a Fitting recess 59b 1st holding part 59c 2nd holding part 59d Mating opening P1 Internal and external connection piping P2 Internal and external connection piping W wall

Claims

1. The indoor unit is a wall-mounted type that is attached to a wall surface via a mounting plate; The indoor unit has a housing that houses an indoor heat exchanger and an indoor side pipe that is drawn out to the outside from a rear surface of the housing, A connection pipe storage section capable of storing the indoor side pipe is formed on the rear surface, An opening / closing member that rotates to open and close is provided below the connection pipe storage section, The opening / closing member has a fixed claw, and in a closed state, the fixed claw can be held in a state engaged with the installation plate, and in an open state, the opening / closing member is configured to be able to expose the connection pipe storage section downward. Air conditioner.

2. The opening / closing member has a first holding portion that contacts the housing and holds the opening / closing member in an open state opened at a first angle. The air conditioner according to claim 1.

3. The opening / closing member has a second holding portion that contacts the housing and holds the opening / closing member in an open state opened at a second angle. The air conditioner according to claim 2.

4. The opening and closing member is detachable from the housing. The air conditioner according to claim 1.

5. The opening / closing member has a hollow cylindrical tubular portion and a bearing portion having a C-shaped cross section and arranged coaxially with the tubular portion, The housing has an insertion portion that is inserted into the cylindrical portion and a shaft portion into which the bearing portion is fitted. The air conditioner according to claim 4.

6. A pair of flat plane portions parallel to each other and a pair of curved surface portions curved outwardly and connecting the flat plane portions are provided on the side surface of the shaft portion, The distance between the planar portions is smaller than the distance between the curved portions. The air conditioner according to claim 5.

7. The opening / closing member is formed with a fastening hole that allows the opening / closing member to be fastened to the mounting plate when the opening / closing member is in a closed state. The air conditioner according to claim 1.

8. The opening and closing member is provided below the tip of the indoor side pipe in a state where the indoor side pipe is stored in the connection pipe storage section. An air conditioner according to any one of claims 1 to 7.

9. The indoor unit is provided with a plurality of the opening and closing members. An air conditioner according to any one of claims 1 to 7.

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