JP6242245B2 - Air conditioner indoor unit - Google Patents

Description

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

  As a conventional indoor unit of an air conditioner, for example, as shown in Patent Document 1 below, one in which auxiliary piping is fixed to a piping fixing portion of an auxiliary bottom plate provided on the lower side of a bottom plate of a housing is known. ing.

JP-A-5-231673 (page 3, FIGS. 1 and 2)

  However, the conventional indoor unit of an air conditioner requires an auxiliary bottom plate that is a dedicated member for fixing the auxiliary pipe, and the number of members has increased. Furthermore, in the conventional indoor unit of an air conditioner, the work of fixing the connection pipe to the auxiliary bottom plate is complicated.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an indoor unit of an air conditioner that can easily fix a connection pipe without adding a new component. That is.

An indoor unit of an air conditioner according to the present invention includes a heat exchanger, a housing in which the heat exchanger is accommodated, a left and right side of the heat exchanger that protrude from one side, and the indoor unit and the outdoor unit. A connection pipe to be connected; a heat exchanger cover that is disposed in the housing and receives the condensed water scattered on the one side of the heat exchanger; and a connection pipe cover that covers the connection pipe, and The heat exchanger cover presses the connection pipe cover against the casing to fix the connection pipe to the casing, and the heat exchanger includes a plurality of pipe groups protruding to the one side. The connecting pipe is bent away from the heat exchanger at a location farther from the heat exchanger than the plurality of pipe groups, and then bent downward. A connecting pipe housing part that houses the part extending along the direction is formed. The heat exchanger cover presses a portion of the connection pipe cover, which is accommodated in the connection pipe accommodating portion, bent upward and then bent downward, against the casing, and connects the connection pipe to the casing. It is characterized by being fixed to.

  According to the present invention, the connecting pipe can be fixed only by attaching the heat exchanger cover for receiving condensed water to the housing. As a result, according to the present invention, an indoor unit of an air conditioner that can easily fix the connection pipe without adding a new component is obtained.

It is a perspective view of the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of the indoor unit described in FIG. It is an enlarged view of the heat exchanger cover of FIG. It is the schematic which described roughly the longitudinal cross-section of the indoor unit described in FIG. It is the enlarged view to which the right side of the heat exchanger as described in FIG. 2 was expanded. It is the enlarged view to which the right side of the back side housing | casing, heat exchanger cover, and drain pan of FIG. 2 was expanded. It is a perspective view of the state which installed the heat exchanger of FIG. 5 in the back side housing | casing described in FIG. It is a schematic diagram explaining the screwing of the heat exchanger cover of FIG. 7, and a back side housing | casing. It is the schematic which described roughly the cross section of the state which assembled the heat exchanger, back side housing | casing, and heat exchanger cover of FIG. It is the enlarged view to which the part of the connection piping accommodating part of FIG. 9 was expanded. It is a rear view of the back cover board of the heat exchanger cover of FIG. It is the schematic diagram which looked at the positional relationship of a drain pan and a heat exchanger cover from the upper side. It is the schematic diagram which looked at the positional relationship of a heat exchanger, a drain pan, and a heat exchanger cover from the left side. It is the perspective view which looked at the heat exchanger cover of FIG. 13 from the left side.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof is omitted or simplified as appropriate. Further, the size and arrangement of the configurations shown in the drawings can be appropriately changed within the scope of the present invention.

Embodiment 1 FIG.
FIG. 1 is a perspective view of an indoor unit 100 of an air conditioner according to this embodiment. The indoor unit 100 according to this embodiment is, for example, a wall-mounted type that is attached to an indoor wall that is an air-conditioned space. The indoor unit 100 includes a front design panel 1 on the front surface and a blowout port 2 on the lower portion of the front surface.

  FIG. 2 is an exploded perspective view of the indoor unit 100 described in FIG. 1. The indoor unit 100 includes a rear housing 3, a left housing 11, a right housing 12, and a front housing 13, which constitute a housing of the indoor unit 100. A front design panel 1 that is a design member is attached to the front side of the front case 13. Note that the left housing 11 and the right housing 12 constitute design members on the left and right side surfaces of the indoor unit 100.

  A heat exchanger 4, a heat exchanger cover 5, an electrical component box 6, a drain pan 7, a fan fixing unit 9, and a propeller fan 10 are accommodated in the casing of the indoor unit 100. The heat exchanger 4 performs heat exchange between the refrigerant flowing inside and the ambient air. The drain pan 7 is installed on the lower side of the heat exchanger 4 and receives water droplets that have condensed and dropped in the casing of the indoor unit 100.

  A fan fixing part 9 for fixing the propeller fan 10 is installed on the upper side of the heat exchanger 4. Propeller fan 10 sucks air from the outside of the casing of indoor unit 100, passes the sucked air through heat exchanger 4, and blows out the air that has passed through heat exchanger 4 to the outside of the casing of indoor unit 100. Thus, an air flow is generated.

  The heat exchanger cover 5 is installed on the right side of the heat exchanger 4 and receives condensed water scattered from the right side of the heat exchanger 4. The condensed water splashed from the right side of the heat exchanger 4 is received by the heat exchanger cover 5 and dropped, and is led to a drain pan 7 installed on the lower side of the heat exchanger cover 5. In this embodiment, an example in which the heat exchanger cover 5 is installed on the right side of the heat exchanger 4 will be described. However, heat exchanger covers are installed on the right and left sides of the heat exchanger 4. It may be.

  FIG. 3 is an enlarged view of the heat exchanger cover 5 shown in FIG. The heat exchanger cover 5 includes a front cover plate 5a, a back cover plate 5b, and a side cover plate 5c that connects the front cover plate 5a and the back cover plate 5b. For example, in this embodiment, the front cover plate 5a, the back cover plate 5b, and the side cover plate 5c are integrally formed. Two positioning projections 5d are formed on one end (left side) of the back cover plate 5b, and two screwing portions 5e are formed on the other end (right side) of the back cover plate 5b. The positions and number of the positioning protrusions 5d and the screwing portions 5e can be changed as appropriate according to the size of the heat exchanger cover 5 and the like.

  The electrical component box 6 shown in FIG. 2 is disposed on the opposite side of the heat exchanger 4 with the heat exchanger cover 5 interposed therebetween. The electrical component box 6 accommodates a circuit board and the like. The vertical adjustment plate 8 adjusts the vertical direction of the air blown out from the air outlet 2.

  FIG. 4 is a schematic diagram schematically illustrating a longitudinal section of the indoor unit 100 illustrated in FIG. 1. When propeller fan 10 is driven, air is sucked into the housing of indoor unit 100 from the upper side of indoor unit 100. The air sucked into the housing of the indoor unit 100 is subjected to heat exchange by the heat exchanger 4. Air that has undergone heat exchange in the heat exchanger 4 is blown out from the air outlet 2. Note that when the cooling operation is performed, the air sucked into the indoor unit 100 is cooled by the heat exchanger 4. Further, when the heating operation is performed, the air sucked into the indoor unit 100 is warmed by the heat exchanger 4.

  FIG. 5 is an enlarged view in which the right side of the heat exchanger 4 shown in FIG. 2 is enlarged. The heat exchanger 4 has a plurality of U-shaped pipes 14, a plurality of auxiliary pipes 15, and a plurality of connection pipes 16 on the right side thereof. The U-shaped pipe 14 is substantially U-shaped and protrudes from the right side surface of the heat exchanger 4. The U-shaped pipe 14 connects a heat transfer tube (not shown) of the heat exchanger 4. The auxiliary pipe 15 extends further to the right side than the U-shaped pipe 14 and connects, for example, a heat transfer tube on the front surface side and a heat transfer tube on the back surface side of the heat exchanger 4. In the following description, a pipe group including a plurality of U-shaped pipes 14 and a plurality of auxiliary pipes 15 is also simply referred to as a pipe group Z.

  The connection pipe 16 connects the indoor unit 100 and the outdoor unit (not shown). The connection pipe 16 protrudes from the right side surface of the heat exchanger 4 and is bent further downward on the right side than the U-shaped pipe 14 and the auxiliary pipe 15. The connection pipe 16 connects the heat exchanger 4 of the indoor unit 100 and an external pipe (not shown) toward the outdoor unit.

  Most of the connection pipe 16 is covered with a connection pipe cover 17. The connection pipe cover 17 suppresses heat exchange between the connection pipe 16 and the ambient air. The connection pipe cover 17 is preferably formed of a material having flexibility (elasticity) and heat insulation.

  FIG. 6 is an enlarged view in which the right side of the back-side housing 3, the heat exchanger cover 5, and the drain pan 7 shown in FIG. 2 is enlarged. FIG. 7 is a perspective view of a state in which the heat exchanger 4 shown in FIG. 5 is installed in the rear side housing 3 shown in FIG. In addition, the heat exchanger cover 5 described in FIG. 7 is attached to the back side housing 3 in which the heat exchanger 4 is installed, as will be described later.

  As shown in FIG. 7, the heat exchanger 4 is attached to the back side housing 3. The connection pipe cover 17 extending downward on the right side of the heat exchanger 4 includes a left guide wall (first guide wall) 18-1 and a right guide wall (second guide wall) 18 formed in the back side housing 3. 2 is accommodated in the connecting pipe accommodating portion 18 (see FIG. 6). The connection pipe accommodating part 18 is formed integrally with the back side housing 3, for example.

  The left guide wall 18-1 and the right guide wall 18-2 of the connection pipe housing part 18 regulate the position of the connection pipe cover 17 in the left-right direction. That is, the left guide wall 18-1 and the right guide wall 18-2 are formed so that the width between the left guide wall 18-1 and the right guide wall 18-2 is substantially equal to the diameter of the connection pipe cover 17. The The connection pipe cover 17 is sandwiched between the left guide wall 18-1 and the right guide wall 18-2. As shown in FIG. 7, the left guide wall 18-1 and the right guide wall 18-2 are formed on the right side of the pipe group Z of the heat exchanger 4 attached to the back side housing 3.

  As shown in FIG. 6, the connection pipe housing part 18 includes a back guide part 18-3 that supports the back side of the connection pipe cover 17. The back guide portion 18-3 is a plurality of protrusions protruding toward the connection pipe cover 17, and is formed in substantially the same shape as the outer peripheral shape of the connection pipe cover 17. The connection pipe housing part 18 holds a connection pipe cover 17 that extends on the right side of the pipe group Z of the heat exchanger 4 and extends in the vertical direction of the back side housing 3.

  As shown in FIG. 6, an insertion portion into which the positioning projection 5 d of the heat exchanger cover 5 is inserted into the left guide wall 18-1 formed on the heat exchanger 4 side with respect to the right guide wall 18-2. 19 is formed. By inserting the positioning protrusion 5d of the heat exchanger cover 5 into the insertion portion 19 of the left guide wall 18-1, the heat exchanger cover 5 and the back side housing 3 are positioned. The positioning protrusion 5d and the insertion portion 19 constitute a positioning portion that positions the heat exchanger cover 5 and the rear housing 3.

  When the heat exchanger cover 5 and the rear housing 3 are positioned, the positions of the screw fastening portions 5e of the heat exchanger cover 5 shown in FIG. 7 and the screw bosses 20 formed on the right guide wall 18-2 are aligned. . When screwing is performed using the screwing portion 5e and the screw boss 20, the heat exchanger cover 5 and the back side housing 3 are fixed. The screwing portion 5 e and the screw boss 20 constitute a fixing portion that fixes the heat exchanger cover 5 and the back side housing 3. Since the screw boss 20 for screwing is formed on the right guide wall 18-2 farther from the heat exchanger 4 than the left guide wall 18-1, the screwing can be easily performed. In this embodiment, since the screw fixing portion 5e and the screw boss 20 are formed at two locations, the screw fixing is performed at two locations. However, the screw fixing location may be one location or three or more locations. Also good.

  FIG. 8 is a schematic diagram for explaining screwing between the heat exchanger cover 5 and the back-side housing 3. When the positioning protrusion 5d of the heat exchanger cover 5 shown in FIG. 6 is inserted into the insertion portion 19 of the back side housing 3, the heat exchanger cover 5 and the back side housing 3 are positioned, and the position shown in FIG. As described above, the positions of the screw fixing portion 5e and the screw boss 20 are aligned. In the state where the screw fixing portion 5e and the screw boss 20 are aligned, the fixing screw 21 is used for screwing.

  FIG. 9 is a schematic view schematically illustrating a transverse section in a state where the heat exchanger 4, the back side housing 3, and the heat exchanger cover 5 illustrated in FIG. 7 are assembled. FIG. 10 is an enlarged view in which a portion of the connection pipe housing portion 18 shown in FIG. 9 is enlarged. FIG. 11 is a rear view of the back cover plate 5b of the heat exchanger cover 5 shown in FIG.

  As shown in FIGS. 9 and 10, when the heat exchanger cover 5 is attached to the rear housing 3, the heat exchanger cover 5 covers the pipe group Z on the right side of the heat exchanger 4 and also connects the connection pipe cover. 17 is pressed to the back side. Since the heat exchanger cover 5 presses the connecting pipe cover 17 having elasticity against the back-side casing 3, the connecting pipe cover 17 is suitably sandwiched between the heat exchanger cover 5 and the back-side casing 3. . In this embodiment, a portion of the connecting pipe cover 17 that is sandwiched between the left guide wall 18-1 and the right guide wall 18-2 and extends in the vertical direction is pressed against the rear housing 3, and the connecting pipe cover 17 is pressed. Is fixed to the rear housing 3. In addition, the heat exchanger cover 5 may press the connection piping cover 17 against the back side housing 3 in another place.

  As shown in FIGS. 10 and 11, on the back side of the back cover plate 5b of the heat exchanger cover 5, a positioning projection 5d and a pressing projection 5f protruding from the back surface of the back cover plate 5b are formed. . The positioning protrusion 5d and the pressing protrusion 5f abut against the connection pipe cover 17 and press the connection pipe cover 17 against the back side housing 3. The positioning protrusion 5d protrudes to the right of the pressing protrusion 5f and is inserted into the insertion portion 19 of the left guide wall 18-1 shown in FIG. 7 as described above.

  As shown in FIG. 11, a guide portion 5h is formed between the two positioning protrusions 5d so as to protrude from the left side surface of the heat exchanger cover 5 in the same direction (left side) as the positioning protrusion 5d. . The guide portion 5h has a tapered shape formed so that the tip side (left side) in the protruding direction is thin. Positioning of the heat exchanger cover 5 and the rear housing 3 by bringing the guide portion 5h into contact with the front side end (end surface) between the insertion portions 19 of the left guide wall 18-1 shown in FIG. Can be suitably performed. Furthermore, when the heat exchanger cover 5 is attached to the rear housing 3, the stress acting on the positioning protrusion 5d can be reduced, so that the possibility of the positioning protrusion 5d being deformed or damaged is reduced. Yes.

  As shown in FIGS. 10 and 11, the plurality of pressing protrusions 5f formed on the back side of the back cover plate 5b have lengths in the left-right direction that are the left guide wall 18-1 and the right guide wall 18-. 2 to be approximately equal to the width between the two. For this reason, the pressing protrusion 5f of the heat exchanger cover 5 is aligned between the left guide wall 18-1 and the right guide wall 18-2, thereby positioning the heat exchanger cover 5 and the back side housing 3. It can be carried out.

  FIG. 12 is a schematic view of the positional relationship between the drain pan 7 and the heat exchanger cover 5 as viewed from above. FIG. 13 is a schematic view of the positional relationship among the heat exchanger 4, the drain pan 7, and the heat exchanger cover 5 as viewed from the left side.

  If heat is exchanged in the heat exchanger 4 during the cooling operation, condensation may occur in the heat exchanger 4. Therefore, as shown in FIG. 13, a drain pan 7 for receiving the condensed water that has fallen is installed in the lower part of the heat exchanger 4. A heat exchanger cover 5 for receiving condensed water scattered on the right side of the heat exchanger 4 is installed on the right side of the heat exchanger 4.

  As described above, the pipe group Z protrudes from the side surface of the heat exchanger 4 on the right side of the heat exchanger 4. In the place where the pipe group Z is arranged, the pipes are arranged in a complicated manner, and the condensed water falling from a certain pipe may hit another pipe and the condensed water may be scattered. For example, in the case of a pipe having a circular cross-sectional shape, condensed water is likely to scatter in the left-right direction of the pipe group Z. For this reason, the heat exchanger cover 5 is provided between the piping group Z of the heat exchanger 4 and the electrical component box 6 so that condensed water does not adhere to the electrical component box 6 installed on the right side of the heat exchanger 4. Is installed. The heat exchanger cover 5 covers the piping group Z of the heat exchanger 4 and receives condensed water scattered on the right side of the heat exchanger 4.

  The front cover plate 5a of the heat exchanger cover 5 covers the front side of the piping group Z as shown in FIG. Further, as shown in FIGS. 9 and 10, the right side and the back side of the piping group Z are covered with a side cover plate 5 c, a back cover plate 5 b, and a back side housing 3. Therefore, in this embodiment, the dew condensation water is not scattered on the right side of the heat exchanger cover 5. As a result, condensed water does not adhere to the electrical component box 6 (see FIG. 2) installed on the right side of the heat exchanger cover 5.

  FIG. 14 is a perspective view of the heat exchanger cover 5 shown in FIG. 13 as viewed from the left side. The condensed water received by the heat exchanger cover 5 moves downward due to gravity. Here, the heat exchanger cover 5 is formed larger than the drain pan 7 so as to reliably receive the dew condensation water scattered on the right side of the heat exchanger 4. Therefore, the lower side of the heat exchanger cover 5 is formed in an inclined portion 5g that is inclined so that the dew condensation water is directed to the drain pan 7 located inside the heat exchanger cover 5. The condensed water received by the heat exchanger cover 5 is guided to the drain pan 7 through the inclined portion 5g.

  As described above, in this embodiment, the connection pipe 16 covered with the connection pipe cover 17 is fixed to the back side housing 3 only by attaching the heat exchanger cover 5 that receives dew condensation water to the back side housing 3. can do. In this embodiment, since the connection pipe 16 is suitably fixed by attaching the heat exchanger cover 5, the connection pipe 16 may be twisted, deformed, or damaged inside the housing of the indoor unit 100. It has been reduced.

  Preferably, as shown in FIG. 5, the connection pipe 16 protrudes from the right side surface of the heat exchanger 4, is bent further upward on the right side of the U-shaped pipe 14 and the auxiliary pipe 15, and then downward. Bend. In this way, by bending the connection pipe 16 upward and then downward, the area in which the connection pipe 16 is sandwiched between the heat exchanger cover 5 and the rear housing 3 can be increased. That is, as shown in FIG. 7, since the length of the connection pipe cover 17 accommodated in the connection pipe accommodation portion 18 can be increased, the connection pipe cover pressed by the heat exchanger cover 5 in the connection pipe accommodation portion 18. The area of 17 can be increased. As a result, the connection pipe 16 can be suitably fixed.

  The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. That is, the configuration of the above embodiment may be improved as appropriate, or at least a part of the configuration may be replaced with another configuration. Further, the configuration requirements that are not particularly limited with respect to the arrangement are not limited to the arrangement disclosed in the embodiment, and can be arranged at a position where the function can be achieved.

  For example, in the above embodiment, the example in which the connection pipe 16 protrudes to the right side of the heat exchanger 4 has been described. However, the present invention is also applied to an indoor unit in which the connection pipe protrudes to the left side of the heat exchanger 4. be able to.

  Further, for example, the connection pipe 16 may be directly fixed with the heat exchanger cover 5. In this case, at least a part of the connection pipe cover 17 can be omitted.

  DESCRIPTION OF SYMBOLS 1 Front design panel, 2 blower outlet, 3 back side housing | casing, 4 heat exchanger, 5 heat exchanger cover, 5a front cover plate, 5b back cover plate, 5c side cover plate, 5d positioning protrusion, 5e screwing , 5f Pressing projection, 5g Inclined part, 5h Guide part, 6 Electrical component box, 7 Drain pan, 8 Vertical adjustment plate, 9 Fan fixing part, 10 Propeller fan, 11 Left housing, 12 Right housing, 13 Front Side housing, 14 U-shaped pipe, 15 Auxiliary pipe, 16 Connection pipe, 17 Connection pipe cover, 18 Connection pipe housing, 18-1 Left guide wall, 18-2 Right guide wall, 18-3 Rear guide section, 19 insertion part, 20 screw boss, 21 fixing screw, 100 indoor unit, Z piping group.

Claims (4)

An air conditioner indoor unit,
A heat exchanger,
A housing containing the heat exchanger;
Projecting from one side in the left-right direction of the heat exchanger, a connection pipe connecting the indoor unit and the outdoor unit,
A heat exchanger cover that is disposed within the housing and receives condensed water scattered on the one side of the heat exchanger;
A connection piping cover that covers the connection piping;
The heat exchanger cover presses the connection pipe cover against the casing, and fixes the connection pipe to the casing .
The heat exchanger includes a plurality of piping groups protruding to the one side,
The connecting pipe is bent at the upper side after being bent from the upper side at a place farther from the heat exchanger than the plurality of pipe groups,
The casing is formed with a connecting pipe accommodating portion that accommodates a portion extending along the vertical direction of the connecting pipe cover.
The heat exchanger cover presses a portion of the connection pipe cover, which is accommodated in the connection pipe housing portion, bent upward and then bent downward, against the casing, and connects the connection pipe to the casing. An indoor unit of an air conditioner characterized by being fixed . The connection pipe housing portion has a first guide wall and a second guide wall that regulate a position in a left-right direction of a portion extending along the vertical direction of the connection pipe cover,
A positioning portion for positioning the housing and the heat exchanger cover is formed on the first guide wall formed on the heat exchanger side with respect to the second guide wall,
Wherein the second guide wall, said housing and the indoor unit of an air conditioner according to claim 1, wherein the fixing portion is formed to perform the fixing of the heat exchanger cover. The indoor unit of an air conditioner according to claim 1 or 2 , wherein a pressing protrusion for pressing the connection pipe cover is formed on the connection pipe cover side of the heat exchanger cover. The room of the air conditioner according to any one of claims 1 to 3 , further comprising an electrical component box installed on the opposite side of the heat exchanger across the heat exchanger cover. Machine.

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