JP6593387B2 - Air conditioner piping fixing structure and indoor unit - Google Patents

Description

  The present invention relates to a pipe fixing structure of an air conditioner and an indoor unit using the same.

  Patent Document 1 discloses a ceiling-embedded air conditioner in which an indoor unit having a fan, a motor, a heat exchanger, and a cabinet in which refrigerant piping is housed is embedded in the ceiling. In this air conditioner, the cabinet is divided so that the refrigerant pipe can be clamped from the direction orthogonal to the extending direction, and one of the divided cabinets is configured to be detachable from the other of the divided cabinets. Has been.

Japanese Patent No. 2561679

  However, in the air conditioner, since the refrigerant pipe is only sandwiched between the cabinets, the movement of the refrigerant pipe in the extending direction cannot be restricted. For this reason, for example, when the refrigerant pipe is pulled during installation of the air conditioner, the pipe of the heat exchanger to which the refrigerant pipe is connected is pulled and deformed, resulting in problems such as abnormal noise and gas leakage. There was a fear.

  Then, this invention makes it a subject to provide the piping fixing structure of the air conditioner which can prevent a deformation | transformation of a heat exchanger, and an air conditioner using the same.

The pipe fixing structure of the air conditioner of one aspect of the present invention is
A pipe fixing structure of an air conditioner provided with a casing having a wall portion through which a refrigerant pipe connecting portion passes,
The wall is
A main body having a notch portion in which the refrigerant pipe connecting portion extending from the inside of the casing to the outside of the casing is located;
A holding plate that is fitted into the notch and sandwiches the refrigerant pipe connecting portion together with the main body portion;
The holding plate is
The holding plate body,
An extending portion extending from the holding plate main body toward the outside of the casing, and a connecting portion extending from the extending portion toward the refrigerant pipe connecting portion and connecting the extending portion and the refrigerant pipe connecting portion. And a piping fixing part including.

  According to the pipe fixing structure of the air conditioner of the above aspect, the pressing plate extends from the pressing plate main body toward the outside of the casing, and extends from the extending portion toward the refrigerant pipe connecting portion. And a pipe fixing part constituted by a connection part for connecting the refrigerant pipe connection part. Thereby, since the movement to the extension direction of a refrigerant | coolant piping connection part can be controlled, the deformation | transformation of the pipe | tube of a heat exchanger by pulling of the refrigerant | coolant piping connected to the refrigerant | coolant piping connection part can be prevented, for example.

Moreover, the pipe fixing structure of the air conditioner of one aspect of the present invention is
The extension portion extends along the refrigerant pipe connection portion.

  According to the pipe fixing structure of the air conditioner of the above aspect, the movement of the refrigerant pipe connecting portion in the extending direction can be more reliably regulated.

Moreover, the pipe fixing structure of the air conditioner of one aspect of the present invention is
A slit is provided at the tip of the refrigerant pipe connection located outside the casing,
The connection part of the pipe fixing part has a protrusion that can be fitted into the slit,
The protruding portion is fitted into the slit, and the extending portion and the distal end portion of the refrigerant pipe connecting portion are connected.

  According to the pipe fixing structure of the air conditioner of the above aspect, the movement of the refrigerant pipe connecting portion in the extending direction can be restricted with a simple configuration.

Moreover, the pipe fixing structure of the air conditioner of one aspect of the present invention is
The main body has a pressing plate fixing portion that is disposed in the vicinity of the refrigerant pipe connecting portion and fixes the pressing plate.

  According to the pipe fixing structure of the air conditioner of the aspect, the pressing plate can be reliably fixed by the main body portion.

Moreover, the pipe fixing structure of the air conditioner of one aspect of the present invention is
The pressing plate fixing portion is constituted by a claw portion formed by cutting and raising the main body portion.

  According to the pipe fixing structure of the air conditioner of the above aspect, the pressing plate can be fixed to the main body with a simple configuration.

An indoor unit of one embodiment of the present invention is
A pipe fixing structure for an air conditioner of the above aspect is provided.

  According to the indoor unit of the above aspect, the pipe fixing structure of the air conditioner of the above aspect can prevent deformation of the pipe of the heat exchanger due to, for example, the refrigerant pipe connected to the refrigerant pipe connection part being pulled. Thereby, it is possible to provide an indoor unit that is less prone to problems due to deformation of the piping of the heat exchanger.

  According to the air conditioner pipe fixing structure of one aspect of the present invention, deformation of the heat exchanger pipe due to the refrigerant pipe being pulled can be prevented.

  In addition, according to the indoor unit of one aspect of the present invention, deformation of the heat exchanger pipe due to the refrigerant pipe being pulled is prevented, and a problem caused by the deformation of the heat exchanger pipe is unlikely to occur. An indoor unit can be realized.

The perspective view of the indoor unit of the air conditioner provided with the piping fixing structure of one embodiment of the present invention. The bottom view of the indoor unit of FIG. Sectional drawing along the III-III line of FIG. The perspective view which shows the state which removed the panel and the electrical component box from the indoor unit of FIG. The perspective view which shows the state which removed the pressing plate from the indoor unit of FIG. The perspective view of the holding plate of the indoor unit of FIG. Sectional drawing along the VII-VII line of FIG. The top view which shows an example of the turbo fan of the indoor unit of FIG. 1, a heat exchanger, and a partition plate.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, terms indicating a specific direction or position (for example, terms including “up”, “down”, “right”, “left”, “side”, “end”) are used as necessary. However, the use of these terms is to facilitate understanding of the invention with reference to the drawings, and the technical scope of the present invention is not limited by the meaning of these terms. Further, the following description is merely illustrative in nature and is not intended to limit the present invention, its application, or its use. Furthermore, the drawings are schematic, and the ratios of dimensions and the like do not necessarily match the actual ones.

  As shown in FIG. 1, an indoor unit 100 of an air conditioner according to an embodiment includes a casing body 1, a rectangular plate-like panel 2 provided at one end of the casing body 1 (that is, a lower end in FIG. 1), A casing composed of a grill 3 attached to the panel 2 is provided.

  The casing body 1 has a substantially rectangular box shape, and as shown in FIG. 3, a turbo fan 30 as an example of a centrifugal fan, a heat exchanger 40, and a partition plate 50 are accommodated therein.

  The surface of the casing body 1 to which the panel 2 is attached is provided with a rectangular suction port 1a in a plan view (hereinafter simply referred to as a plan view) viewed along a direction orthogonal to the plate surface of the panel 2. Yes. As shown in FIG. 2, the turbo fan 30 is disposed so as to be located at the suction port 1 a in a plan view. As shown in FIG. 3, a bell mouth 32 is provided between the suction port 1 a of the casing body 1 and the turbofan 30, and a filter 4 is provided between the suction port 1 a and the grill 3. ing.

  As shown in FIG. 3, the heat exchanger 40 and the partition plate 50 are arranged around the rotation shaft 31 of the turbofan 30. Further, a drain pan 60 is disposed on the side of the inlet 1a of the casing body 1 of the heat exchanger 40 and the partition plate 50 (that is, the lower side of FIG. 3).

  Two tubular refrigerant pipe connection portions 5 and 6 are connected to the heat exchanger 40. As shown in FIG. 3, each refrigerant pipe connection portion 5, 6 is connected to one of a pair of wall portions 110, 120 facing the longitudinal direction of the casing body 1 in plan view from the heat exchanger 40 inside the casing body 1. (That is, the left wall portion 110 in FIG. 1) extends in the thickness direction and extends to the outside of the casing body 1. In addition, each of the refrigerant pipe connection portions 5 and 6 is disposed at one end of the casing body 1 in the short direction in the plan view of the wall portion 110.

  As shown in FIG. 7, each refrigerant pipe connection portion 5, 6 is connected to a piece union joint portion 151 provided at the tip thereof to which a refrigerant pipe can be connected, and to this piece union joint portion 151 and the heat exchanger 40. And a clamped body 153 that covers the outer periphery of the pipe 152 and extends from the inside of the casing body 1 to the single union joint 151. Each of the refrigerant pipe connection parts 5 and 6 is sandwiched between a body part 130 of the wall part 110 of the casing body 1 and a pressing plate 140, which will be described later, via a sandwiched body part 153, and is extended by a pipe fixing structure. The movement in the present direction (that is, the longitudinal direction of the casing body 1 in plan view) is restricted, and is configured to be connectable to a refrigerant pipe (not shown) outside the casing body 1.

  As shown in FIG. 3, a ventilation path P that guides the air blown from the turbofan 30 to the air outlet 10 of the panel 2 is provided inside the casing body 1.

  As shown in FIG. 1, a drain socket 7 that protrudes from the wall portion 110 toward the outside of the casing body 1 is provided on the wall portion 110 of the casing body 1. The drain socket 7 is disposed at a substantially central portion of the wall portion 110 in the short direction of the casing body 1 and is configured to be connected to a drain hose (not shown) outside the casing body 1. The electrical component box 8 is fixed to the wall portion 110. The electrical component box 8 is arranged at the end of the wall 110 opposite to the refrigerant pipe connecting portions 5 and 6 with respect to the drain socket 7 in the short direction of the casing body 1.

  A suspension bolt (not shown) for suspending the indoor unit 100 of the air conditioner from the ceiling can be connected to each of the pair of wall portions 110 and 120 facing in the longitudinal direction of the casing body 1 in a plan view. Metal fittings 101 to 103 are provided.

  As shown in FIG. 3, the panel 2 has a recess 2 c in which a panel opening 2 a is provided on an opening 2 b that is an outer surface in the plate thickness direction. A rectangular grill 3 is detachably attached to the recess 2c in a plan view as viewed in a direction perpendicular to the plate surface of the panel 2. A through hole 2d that penetrates the panel 2 in the thickness direction is provided on the bottom surface of the recess 2c, and a filter 4 is disposed in the through hole 2d. That is, as shown in FIG. 2, by removing the filter 4, the turbo fan 30 is visible from the outside of the casing through the through hole 2d.

  As shown in FIG. 2, a blower outlet 10 extending along the short side of the panel 2 is provided on one side of the grill 3 of the panel 2 in the longitudinal direction. A flap 20 is rotatably attached to the air outlet 10. 1 to 3 show a state in which the air outlet 10 is closed by the flap 20.

  Next, the pipe fixing structure of the indoor unit 100 will be described with reference to FIGS. 4 and 5, the sandwiched body portion 153 of each refrigerant pipe connection portion 5, 6 is omitted.

  As shown in FIG. 4, the wall part 110 has a main body part 130 and a pressing plate 140.

  As shown in FIG. 5, the main body 130 has a notch 131 in which two refrigerant pipe connection portions 5 and 6 are located. The notch 131 extends from the end of the main body 130 on the side where the panel 2 is attached (that is, the lower end in FIGS. 4 and 5) in a direction perpendicular to the plate surface of the panel 2 and away from the panel 2 ( That is, it extends upward in FIGS. 4 and 5. Further, a first groove portion 132 and a second groove portion 133 in which the refrigerant pipe connection portions 5 and 6 are respectively located are provided at the bottom portion of the notch portion 131. Each of the first groove portion 132 and the second groove portion 133 extends along a direction orthogonal to the plate surface of the panel 2 and has a convex curved bottom portion protruding in a direction away from the panel 2.

  Further, as shown in FIG. 5, the main body 130 has a pressing plate fixing portion 134 that fixes the pressing plate 140. The pressing plate fixing part 134 is formed by cutting and raising the main body part 130, and is disposed in the vicinity of the first groove part 132 and the second groove part 133, that is, in the vicinity of the two refrigerant pipe connection parts 5 and 6. It is composed of the nails.

  As shown in FIG. 6, the pressing plate 140 includes a pressing plate main body 141 and two pipe fixing portions 142 and 143.

  As shown in FIG. 4, the pressing plate main body 141 has a plate shape that can be fitted into the notch 131, and is fitted into the notch 131 to connect the refrigerant pipe connecting portions 5 and 6 together with the main body 130 of the wall 110. Hold it.

  As shown in FIG. 6, the pipe fixing portions 142 and 143 are provided at the end portions of the pressing plate main body 141 adjacent to the first groove portion 132 and the second groove portion 133 of the cutout portion 131 of the wall portion 110, respectively. The extending portion 144 and the plate-like connecting portion 145 are configured. That is, the pipe fixing portions 142 and 143 are arranged so as to be positioned in the vicinity of the pressing plate fixing portion 134 in a state where the pressing plate 140 is fitted and fixed in the cutout portion 131 of the main body portion 130.

  As shown in FIG. 4, each extending portion 144 extends from the holding plate main body 141 toward the outside of the casing main body 1 and substantially in parallel along the extending direction of the refrigerant pipe connecting portions 5 and 6. . Each connection portion 145 extends from the corresponding extension portion 144 toward the adjacent refrigerant pipe connection portions 5 and 6, and connects the corresponding extension portion 144 and the adjacent refrigerant pipe connection portions 5 and 6. .

  Specifically, as shown in FIG. 7, an annular slit 154 is provided in the single union joint portion 151 of each refrigerant pipe connection portion 5, 6. In addition, as shown in FIG. 6, a pair of protrusions 146 that can be fitted into the slits 154 are provided in the connection portions 145 of the pipe fixing portions 142 and 143.

  Refrigerant pipe connection adjacent to each extending part 144 by fitting a pair of protrusions 146 of each pipe fixing part 142, 143 into the slit union joint part 151 of the refrigerant pipe connection parts 5, 6 adjacent to each other. The tip portions of the portions 5 and 6 are connected, and the movement of the two refrigerant pipe connection portions 5 and 6 in the extending direction is restricted.

  As shown in FIG. 6, the presser plate main body 141 has a screw 160 (see FIG. 6) at the end opposite to the end where the pipe fixing portions 142 and 143 are provided. 4) and a screw fixing portion 147 for fixing. That is, in the indoor unit 100, the pressing plate 140 is fixed to the main body portion 130 by the pressing plate fixing portion 134 of the main body portion 130 and the screw 160.

  According to the pipe fixing structure, the pressing plate 140 extends from the pressing plate main body 141 toward the outside of the casing main body 1 and extends from the extending portion 144 toward the refrigerant pipe connecting portions 5 and 6. It has pipe fixing parts 142 and 143 including a connecting part 145 for connecting the extending part 144 and the refrigerant pipe connecting parts 5 and 6. Thereby, since movement to the extension direction of refrigerant piping connection parts 5 and 6 can be controlled, for example, heat by pulling connection piping (namely, refrigerant piping connected to refrigerant piping connection parts 5 and 6) is pulled. The deformation of the pipe 152 of the exchanger 40 can be prevented.

  Further, the pipe fixing parts 142 and 143 include an extension part 144 extending from the holding plate main body 141 toward the outside of the casing main body 1 and a connection part 145 connecting the extension part 144 and the refrigerant pipe connection parts 5 and 6. Have. Thereby, the piece union joint part 151 of the front-end | tip part of the refrigerant | coolant piping connection parts 5 and 6 is separated from the wall part 110 of the casing main body 1, and the refrigerant | coolant to the piece union joint part 151 of the front-end | tip part of refrigerant | coolant pipe connection parts 5 and 6 is carried out. A space for facilitating the connection of the pipes can be provided.

  Note that the suspension fitting 103 provided on the outer surface of the end portion of the height near the refrigerant pipe connection portions 5 and 6 of the wall portion 110 of the casing body 1 is suspended in the direction orthogonal to the plate surface of the panel 2. It is provided at a position farther from the panel 2 than the metal fittings 101 and 102. Since the connection work of the refrigerant pipe to the refrigerant pipe connection parts 5 and 6 is performed from the panel 2 side, the suspension fitting 103 is prevented from being obstructed when the refrigerant pipe is connected to the refrigerant pipe connection parts 5 and 6. It is possible to improve the installation.

  Moreover, since the extension part 144 is extended along the refrigerant | coolant piping connection parts 5 and 6, the movement to the extension direction of the refrigerant | coolant pipe connection parts 5 and 6 can be controlled more reliably.

  In addition, a single union joint portion 151 having a slit 154 is provided at the tip of the refrigerant pipe connection portions 5 and 6 located outside the casing body 1, and the connection portions 145 of the pipe fixing portions 142 and 143 are fitted into the slit 154. It has a projection 146 that can be mated. Thereby, with a simple structure, the movement to the extension direction of the refrigerant | coolant piping connection parts 5 and 6 can be controlled more reliably.

  Further, the main body portion 130 of the wall portion 110 has a pressing plate fixing portion 134 for fixing the pressing plate 140, and the pipe fixing portions 142 and 143 are fixed in a state where the pressing plate 140 is fitted into the notch portion 131. Further, it is arranged so as to be positioned in the vicinity of the pressing plate fixing portion 134. Thereby, the pressing plate 140 can be reliably fixed by the main body 130.

  Further, the pressing plate fixing part 134 is constituted by a claw part formed by cutting and raising the main body part 130. Thereby, the pressing plate 140 can be fixed to the main body 130 with a simple configuration.

  Moreover, according to the indoor unit 100 provided with the said piping fixing structure, the deformation | transformation of the piping of the heat exchanger 40 by refrigerant | coolant piping being pulled by the said piping fixing structure can be prevented. Thereby, the indoor unit 100 in which the malfunction resulting from the deformation | transformation of the piping 152 of the heat exchanger 40 cannot generate | occur | produce can be provided.

  In the above piping structure, the refrigerant pipe connecting portions 5 and 6 are sandwiched between the main body portion 130 of the wall portion 110 and the pressing plate 140, and the pressing plate 140 is fixed to the pressing plate main body 141 and the pipe fixing portions 142 and 143. As long as it has.

  For example, the extending portions 144 of the pipe fixing portions 142 and 143 may not extend in parallel along the extending direction of the refrigerant pipe connecting portions 5 and 6, and the holding plate fixing portion 134 includes a plurality of claw portions. However, other configurations that can fix the pressing plate 140 to the main body portion 130 may be adopted, and the pressing plate fixing portion 134 may be omitted, and the pressing plate 140 may be fixed to the main body portion 130 only by the screws 160. May be.

  Moreover, the said piping structure is applicable not only to the refrigerant | coolant piping of the indoor unit 100 but the arbitrary piping used with an air conditioner.

  In addition, the pipe fixing structure is not limited to the refrigerant pipe connection parts 5 and 6 in which the single union joint part 151 having the slit 154 at the tip part is provided, but also to refrigerant pipe connection parts of other configurations. The movement in the extending direction can be restricted. That is, the number of pipe fixing parts and the shape, size, structure, and the like of the extending part and the connecting part of the pipe fixing part are not limited to the above embodiment, and can be changed as appropriate according to the refrigerant pipe connecting part.

  An example of the turbo fan 30, the heat exchanger 40, and the partition plate 50 is shown in FIG. The casing body 1 in FIG. 8 includes a first wall portion 11 on the air outlet 10 side, a second wall portion 12 facing the first wall portion 11, and between the first wall portion 11 and the second wall portion 12. And a third wall portion 14 and a fourth wall portion 14 that are opposed to each other.

  The heat exchanger 40 includes, in plan view, a first heat exchange unit 41, a second heat exchange unit 42 located upstream of the first heat exchange unit 41 in the rotational direction of the turbofan 30, and the first heat exchange unit 41. A third heat exchanging part 43 located downstream of the heat exchanging part 41 in the rotational direction of the turbofan 30.

  Then, both ends of the heat exchanger 40 are connected via the arc-shaped partition plate 50, and the turbo fan 30 is surrounded by the heat exchanger 40 and the partition plate 50.

  The pipe connection parts 5 and 6 are connected to the end part of the third heat exchange part 43 of the heat exchanger 40. In addition, a drain pump 70 is disposed in the casing body 1 and on the second wall 12 side between the partition plate 50 and the second wall 12.

  The heat exchanger 40 is not limited to the case where the heat exchanger 40 includes the first heat exchange unit 41, the second heat exchange unit 42, and the third heat exchange unit 43. For example, the heat exchanger 40 has an arc shape or a V shape. It may be a heat exchanger.

  By appropriately combining any of the above-described various embodiments or modifications, it is possible to achieve the respective effects. In addition, combinations of the embodiments, combinations of the examples, or combinations of the embodiments and examples are possible, and combinations of features in different embodiments or examples are also possible.

DESCRIPTION OF SYMBOLS 1 Casing main body 1a Suction port 2 Panel 2a Panel opening part 2b Opening surface 2c Recessed part 2d Through-hole 3 Grill 4 Filter 5, 6 Refrigerant piping connection part 7 Drain socket 8 Electrical component box 10 Outlet 20 Flaps 30 Turbofan 31 Rotating shaft 32 Bell mouth 40 Heat exchanger 50 Partition plate 60 Drain pan 100 Indoor unit 101, 102, 103 Hanging bracket 110, 120 Wall portion 130 Main body portion 131 Notch portion 132 First groove portion 133 Second groove portion 134 Press plate fixing portion 140 Press plate 141 Presser Plate body 142, 143 Pipe fixing part 144 Extension part 145 Connection part 146 Projection part 147 Screw fixing part 151 Single union joint part 152 Pipe 153 Nipped body part 154 Slit 160 Screw

Claims (5)

A pipe fixing structure of an air conditioner including a casing (1, 2, 3) having a wall part (110) through which a refrigerant pipe connection part (5, 6) passes,
The wall (110) is
A main body having a notch (131) in which the refrigerant pipe connecting portion (5, 6) extending from the inside of the casing (1, 2, 3) to the outside of the casing (1, 2, 3) is located. Part (130);
A holding plate (140) fitted into the notch (131) and sandwiching the refrigerant pipe connection (5, 6) together with the main body (130),
The holding plate (140)
A holding plate body (141);
An extension part (144) extending from the pressing plate main body (141) toward the outside of the casing, and an extension part (144) extending from the extension part (144) toward the refrigerant pipe connection part (5, 6). A pipe fixing part (142, 143) including a connection part (145) for connecting the part (144) and the refrigerant pipe connection part (5, 6) ,
A slit (154) is provided at the tip (151) of the refrigerant pipe connection (5, 6) located outside the casing,
The connecting portion (145) of the pipe fixing portion (142, 143) has a protrusion (146) that can be fitted into the slit (154),
Air in which the protrusion (146) is fitted into the slit (154), and the extension (144) and the tip (151) of the refrigerant pipe connection (5, 6) are connected. The piping fixing structure of the harmony machine. In the air conditioner pipe fixing structure according to claim 1,
A pipe fixing structure for an air conditioner, wherein the extending part (144) extends along the extending direction of the refrigerant pipe connecting part (5, 6). In the air conditioner pipe fixing structure according to claim 1 or 2 ,
A pipe fixing structure for an air conditioner, wherein the main body (130) has a pressing plate fixing portion (134) that is disposed in the vicinity of the refrigerant piping connecting portion (5, 6) and fixes the pressing plate (140). . In the pipe fixing structure of the air conditioner according to claim 3 ,
A pipe fixing structure of an air conditioner, wherein the pressing plate fixing part (134) is configured by a claw part formed by cutting and raising the main body part (130). An indoor unit comprising the piping fixing structure for an air conditioner according to any one of claims 1 to 4 .

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