JP2010151413A - Indoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioner, improving user comfort by solving a problem on airflow. <P>SOLUTION: This indoor unit 2 of the air conditioner buried in an indoor wall surface W and performing at least a cooling operation or a heating operation, is provided with: a supply opening forming member 20; a projecting member 80 for cooling; and/or a projecting member 81 for heating. The supply opening forming member 20 forms a supply opening 21b capable of supplying conditioned air conditioned by performing the cooling operation or the heating operation. The projecting member 80 for cooling has a first supply air guide face 80a moving and projecting to an indoor side with respect to the wall surface W from the neighborhood of a lower edge part of the supply opening 21b in the cooling operation. The projecting member 81 for heating has a second supply air guide face moving and projecting to the indoor side with respect to the wall surface W from the neighborhood of an upper edge part of the supply opening 21b in the heating operation. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

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

Conventionally, an indoor unit of a so-called wall-embedded air conditioner in which an indoor unit main body is embedded in an opening formed on a wall surface has been proposed (see Patent Document 1). In this indoor unit, the air outlet from which the conditioned air can be blown out is at substantially the same position as the wall surface.
Japanese Patent Laid-Open No. 9-14748

  In general, air heated by the heating operation of the air conditioner is lighter than room air and therefore tends to flow upward in the room. In addition, in the indoor unit of the so-called wall-embedded air conditioner as described above, the blowout port is almost at the same position as the wall surface, so even if the horizontal flap angle is maximally downward, it cannot be blown out directly below. Is also envisaged. For this reason, it is assumed that the warmed air does not reach the floor surface. Therefore, in the indoor unit of Patent Document 1, warm air is caused to flow downward as much as possible by taking the corner of the lower surface of the air outlet and utilizing the Counder effect. However, even in this case, it is assumed that the warm air still does not reach the floor surface, and it is preferable that the warm air reaches the floor surface in consideration of the user's comfort.

  On the other hand, during the cooling operation, since the cooled air is heavier than the room air, it is assumed that the air flows downward in the room. Further, since the indoor unit of the wall-embedded air conditioner is embedded in the wall surface, it is assumed that even if the horizontal flap is leveled, the cooled air cannot reach far.

  Then, the subject of this invention is providing the indoor unit of the air conditioner which improves the problem of an air flow and improves a user's comfort.

  An indoor unit of an air conditioner according to a first aspect of the present invention is an indoor unit of an air conditioner that is embedded in a wall surface of a room and performs at least a cooling operation or a heating operation. And a projecting member for heating. A blower outlet formation member forms the blower outlet which can blow off the air-conditioning air conditioned by cooling operation or heating operation. The cooling projecting member has a first blown air guide surface that protrudes by moving from the vicinity of the lower edge of the air outlet toward the indoor side of the wall surface during cooling operation. The heating projecting member has a second blown air guide surface that projects from the vicinity of the upper edge of the air outlet toward the indoor side from the wall surface during the heating operation.

  In the indoor unit of the air conditioner according to the first aspect of the invention, the cooling projecting member protrudes toward the indoor side during the cooling operation, so that the cooled air that easily flows downward collides with the first blowing air guide surface, Can be made to flow. On the other hand, at the time of heating operation, the heating projecting member protrudes to the indoor side, so that warmed air that easily flows upward can collide with the second blowing air guide surface and flow downward in the room. Therefore, when the user feels hot, the cold air spreads from above to below, and when it feels cold, the air is warmed from the feet by the warm air, improving the comfort of the user.

  An indoor unit of an air conditioner according to a second aspect of the present invention is the indoor unit of the air conditioner according to the first aspect of the present invention, performs a cooling operation and a heating operation, and includes a cooling projecting member and a heating projecting member. The cooling projecting member is housed in a first position that does not project indoors more than the air outlet forming member during heating operation, and the heating projecting member projects more indoor than the air outlet forming member during cooling operation. Not stored in the second position.

  In the indoor unit of the air conditioner according to the second aspect of the present invention, the heating protruding member is easy to function because the cooling protruding member is housed in the first position during the heating operation. In addition, since the heating projection member is housed in the second position during the cooling operation, the cooling projection member can easily function.

  An indoor unit for an air conditioner according to a third aspect of the present invention is the indoor unit for an air conditioner according to the first aspect or the second aspect of the present invention, and further includes a blowing direction changing member. The blowing direction changing member changes the blowing direction of the conditioned air by an operation different from the cooling protruding member and / or the heating protruding member.

  Here, for example, the blowing direction changing member is a horizontal flap.

  In the indoor unit of an air conditioner according to the third aspect of the present invention, the direction of the conditioned air blown out from the outlet can be determined by providing the blowing direction changing member.

  An indoor unit of an air conditioner according to a fourth aspect of the present invention is the indoor unit of an air conditioner according to any of the first to third aspects of the present invention, wherein the heating projecting member has a first part and a second part. . The first part has a horizontal plane or a plane having an angle close to the horizontal plane. The second part has a vertical surface or a surface with an angle close to the vertical surface, and is located far from the wall surface.

  In the indoor unit of an air conditioner according to the fourth aspect of the present invention, the heating projecting member has a first surface having a horizontal surface or a surface having an angle close to the horizontal surface, and a second portion having a vertical surface or a surface having an angle close to the vertical surface. Thus, the conditioned air passing through the outlet can collide with the first part and the second part and be guided downward.

  An indoor unit for an air conditioner according to a fifth aspect of the present invention is the indoor unit for an air conditioner according to any one of the first to fourth aspects of the invention, which performs a cooling operation and a heating operation and includes at least a cooling projecting member. A blower outlet formation member has a lower part formation part. A lower part formation part forms the lower part of a blower outlet. A curved surface is formed in the lower forming portion. The cooling projecting member projects into the space above the curved surface during the cooling operation.

  Here, for example, the cooling projecting member is an upper space of the curved surface and projects to a position where the cooled air blown from the outlet can be prevented from flowing along the curved surface.

  In the indoor unit of an air conditioner according to the fifth aspect of the invention, the curved surface is formed in the lower forming portion, so that the conditioned air conditioned by the heating operation easily flows downward when passing through the curved surface. Thereby, the warmed conditioned air can reach the floor surface. Moreover, at the time of air_conditionaing | cooling operation, it is possible to prevent the cool air from flowing downward easily by allowing the air cooling protruding member to protrude above the curved surface, and to flow upward.

  An indoor unit of an air conditioner according to a sixth aspect of the present invention is the indoor unit of an air conditioner according to any of the first to fourth aspects of the invention, which performs a cooling operation and a heating operation, and includes at least a cooling projecting member. A blower outlet formation member has a lower part formation part. A lower part formation part forms the lower part of a blower outlet. A curved surface is formed in the lower forming portion. The cooling projecting member projects into the space below the curved surface during the cooling operation.

  Here, for example, the cooling projecting member is a space below the curved surface, and projects to a position where the cooled air blown from the blowout port can flow upward.

  In the indoor unit of an air conditioner according to the sixth aspect of the present invention, the cooling projecting member projects into the space below the curved surface during the cooling operation, so that the cold air flowing downward along the curved surface can flow upward.

  In the indoor unit of the air conditioner according to the first aspect of the invention, the cooling projecting member projects to the indoor side during the cooling operation, so that the cooled air that easily flows downward collides with the cooling projecting member and flows upward in the room. Can be made. On the other hand, at the time of heating operation, the heating protrusion member protrudes indoors, so that warmed air that easily flows upward can collide with the heating protrusion member and flow downward in the room. Therefore, when the user feels hot, the cold air spreads from above to below, and when it feels cold, the air is warmed from the feet by the warm air, improving the comfort of the user.

  In the indoor unit of the air conditioner according to the second aspect of the present invention, the heating protruding member is easy to function because the cooling protruding member is housed in the first position during the heating operation. In addition, since the heating projection member is housed in the second position during the cooling operation, the cooling projection member can easily function.

  In the indoor unit of an air conditioner according to the third aspect of the present invention, the direction of the conditioned air blown out from the outlet can be determined by providing the blowing direction changing member.

  In the indoor unit of an air conditioner according to the fourth aspect of the present invention, the heating projecting member has a first surface having a horizontal surface or a surface having an angle close to the horizontal surface, and a second portion having a vertical surface or a surface having an angle close to the vertical surface. Thus, the conditioned air passing through the outlet can collide with the first part and the second part and be guided downward.

  In the indoor unit of an air conditioner according to the fifth aspect of the invention, the curved surface is formed in the lower forming portion, so that the conditioned air conditioned by the heating operation easily flows downward when passing through the curved surface. Thereby, the warmed conditioned air can reach the floor surface. Moreover, at the time of air_conditionaing | cooling operation, it is possible to prevent the cool air from flowing downward easily by allowing the air cooling protruding member to protrude above the curved surface, and to flow upward.

  In the indoor unit of an air conditioner according to the sixth aspect of the present invention, the cooling projecting member projects into the space below the curved surface during the cooling operation, so that the cold air flowing downward along the curved surface can flow upward.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.

<First Embodiment>
<Configuration of air conditioner 1>
First, the overall configuration of the air conditioner 1 will be described.

  The air conditioner 1 is an air conditioner capable of performing an air conditioning operation including a heating operation and a cooling operation, a filter cleaning operation, and the like, and includes an indoor unit 2 and an outdoor unit 4. The indoor unit 2 is installed indoors so that the front surface is along the wall surface W (see FIG. 2). The outdoor unit 4 is installed outdoors.

(Schematic configuration of the refrigerant circuit of the air conditioner 1)
As shown in FIG. 1, the refrigerant circuit of the air conditioner 1 mainly includes an indoor heat exchanger 27 located in the indoor unit 2, an accumulator 41 located in the outdoor unit 4, a compressor 42, a four-way switching valve 43, The outdoor heat exchanger 40 and the expansion valve 44 are configured.

  The accumulator 41 is connected to the suction side of the compressor 42. The four-way switching valve 43 is connected to the discharge side of the compressor 42. The outdoor heat exchanger 40 is connected to the four-way switching valve 43. The expansion valve 44 is an electric expansion valve connected to the outdoor heat exchanger 40. The expansion valve 44 is connected to the communication pipe 10 via the liquid side closing valve 46, and is connected to one end of the indoor heat exchanger 27 via this pipe. The four-way switching valve 43 is connected to the communication pipe 10 via a gas-side closing valve 47, and is connected to the other end of the indoor heat exchanger 27 via this pipe.

<Configuration of indoor unit 2>
Next, the configuration of the indoor unit 2 will be described in detail.

  The indoor unit 2 is a wall-embedded indoor unit that is installed by being embedded in an opening opened in the wall surface W in order to install the indoor unit 2.

  As shown in FIG. 2, the indoor unit 2 includes a main body casing 200 having a box shape.

  The main body casing 200 includes an installation frame (not shown), a frame 11, and the front frame 20 that fits into the installation frame and the frame 11 and is actually exposed to the front side of the wall surface W.

  In the indoor unit 2, the frame 11 is first embedded in an opening portion opened in the wall surface W, and then an installation frame is installed so as to fit into the frame 11 and along the wall surface W. It is installed on the wall surface W by being installed so that the front grille 20 fits into the wall.

  The front grill 20 is constituted by a horizontal lattice-shaped plate member, and is detachable from the installation frame and the frame 11. A suction port 21 a is formed in the upper portion of the front grill 20. The suction port 21 a is an opening generated because the front grill 20 has a horizontal lattice shape, and indoor air can be sucked into the main body casing 200 from the suction port 21 a.

  A blower outlet 21 b is formed in the lower portion of the front grill 20. The air outlet 21b is an opening generated because the front grill 20 has a horizontal lattice shape, and the conditioned air conditioned by the indoor unit 2 can be blown out from the air outlet 21b into the room.

  A horizontal flap 24 is provided at the bottom of the front grill 20. When the tip of the horizontal flap 24 is substantially vertical, the conditioned air cannot flow into the room. When the tip of the horizontal flap 24 is not in a substantially vertical state, the conditioned air can flow into the room. . Therefore, in order for the air outlet 21b described above to blow out the conditioned air, the horizontal flap 24 needs to be in a state that is not substantially vertical.

  Further, a semicircular arc-shaped curved surface 20b is formed on the lower forming portion 20a that forms the lower portion of the front grill 20 from the opposite side of the room side with respect to the wall surface W toward the lower side on the indoor side. The curved surface 20b has a function of causing the conditioned air blown out from the outlet 21b to flow downward.

  A filter 23 for removing floating substances such as dust contained in room air is provided in the main body casing 200 in a detachable manner on the front grill 20.

  The main body casing 200 mainly contains an indoor fan 26, an indoor heat exchanger 27, and a drain pan 28.

  The indoor fan 26 is a cross flow fan that has a variable air flow rate and is driven by a fan motor.

  The indoor heat exchanger 27 includes a heat transfer tube that is bent back and forth at both ends in the longitudinal direction and a plurality of fins that are inserted through the heat transfer tube, and performs heat exchange between the air that contacts the heat transfer tube.

  The drain pan 28 collects drain water generated in the indoor heat exchanger 27.

  Further, as shown in FIGS. 2 and 3, the main body casing 200 includes a cooling projecting member 80 and a heating projecting member 81.

(Configuration of cooling projection member 80)
The cooling projecting member 80 is a movable plate-like member, and as shown in FIG. 2, the first tip 80b is inclined upward with respect to the horizontal plane. The cooling projecting member 80 has a cold air guide surface 80a on the upper end surface. During the cooling operation, the conditioned air blown out by the indoor fan 26 is cooled, so that it tends to flow downward. However, it collides with the cooling air guide surface 80a, so that it flows easily upward.

  Further, the cooling projecting member 80 is formed with a rack, and a pinion gear is provided below the cooling projecting member 80. The rack and the pinion gear mesh with each other and the pinion gear is driven by the motor, so that the cooling projection member 80 can move. The specific operation of the cooling projection member 80 will be described in detail later.

(Structure of the protrusion member 81 for heating)
The heating projecting member 81 is a movable member, and includes a hood member 82 having a fan-shaped surface, a guide rail 83, and a support member 84, as shown in FIGS.

  The hood member 82 is a plate-like member whose second tip 82a (which is the tip of the two tips located on the indoor side) is curved downward with respect to the horizontal plane. The hood member 82 has a warm air guide surface 81a on the inner side. During the heating operation, the conditioned air blown out by the indoor fan 26 is warm and therefore tends to flow upward. However, it collides with the warm air guide surface 81a, so that it tends to flow downward.

  The guide rail 83 is a rail extending from the front grill 20 to the lower part of the drain pan 28, and accommodates the hood member 82.

  The support member 84 is a member that supports the hood member 82. The support member 84 is connected to the second tip portion 82a of the hood member 82 with a pin. A driven gear 85 is formed on the third tip portion 84a of the support member 84 that is not connected to the hood member 82, and a drive gear 86 is provided in the vicinity of the third tip portion 84a. When the driven gear 85 and the drive gear 86 are engaged with each other, and the drive gear 86 is rotated by the motor 87, the heating projecting member 81 can move. The specific operation of the heating projecting member 81 will be described in detail later.

<Operation of air conditioner 1>
Next, the operation of the air conditioner 1 will be described. Note that these operations are performed by a control unit (not shown) that controls various devices of the air conditioner 1.

  As the operation mode of the air conditioner 1, there is a normal operation mode in which various devices of the outdoor unit 4 and the indoor unit 2 are mainly controlled according to the operation load of the indoor unit 2. The normal operation mode includes a cooling operation and a heating operation.

(1) Cooling Operation First, the cooling operation in the normal operation mode will be described with reference to FIG.

  During the cooling operation, the four-way switching valve 43 is in the state indicated by the solid line in FIG. 1, that is, the discharge side of the compressor 42 is connected to the gas side of the outdoor heat exchanger 40 and the suction side of the compressor 42 is the indoor heat. It is in a state connected to the gas side of the exchanger 27.

  When the compressor 42 and the outdoor fan 45 are activated, the low-pressure gas refrigerant is sucked into the compressor 42 and compressed to become a high-pressure gas refrigerant. Thereafter, the high-pressure gas refrigerant is sent to the outdoor heat exchanger 40 via the four-way switching valve 43, exchanges heat with the outdoor air supplied by the outdoor fan 45, and is condensed to form a high-pressure liquid refrigerant. Become. The high-pressure liquid refrigerant is decompressed by the expansion valve 44 to become a low-pressure gas-liquid two-phase refrigerant, and is sent to the indoor unit 2 via the liquid-side closing valve 46 and the communication pipe 10.

  The low-pressure gas-liquid two-phase refrigerant sent to the indoor unit 2 is sent to the indoor heat exchanger 27 where it is evaporated by exchanging heat with the indoor air in the indoor heat exchanger 27 to become a low-pressure gas refrigerant. .

  The low-pressure gas refrigerant is sent to the outdoor unit 4 via the communication pipe 10 and flows into the accumulator 41 via the gas-side closing valve 47 and the four-way switching valve 43. Then, the low-pressure gas refrigerant that has flowed into the accumulator 41 is again sucked into the compressor 42.

(2) Heating operation Next, the heating operation in the normal operation mode will be described.

  During the heating operation, the four-way switching valve 43 is in the state indicated by the broken line in FIG. 1, that is, the discharge side of the compressor 42 is connected to the gas side of the indoor heat exchanger 27 and the suction side of the compressor 42 is the outdoor heat. It is connected to the gas side of the exchanger 40.

  When the compressor 42 and the outdoor fan 45 are activated, the low-pressure gas refrigerant is sucked into the compressor 42 and compressed to become a high-pressure gas refrigerant, and the four-way switching valve 43, the gas-side shut-off valve 47, and the communication pipe 10. Is sent to the indoor unit 2 via.

  The high-pressure gas refrigerant sent to the indoor unit 2 is condensed by exchanging heat with indoor air in the indoor heat exchanger 27, and then becomes a high-pressure liquid refrigerant. Sent to machine 4.

  This high-pressure liquid refrigerant is reduced in pressure by the expansion valve 44 via the liquid-side closing valve 46 to become a low-pressure gas-liquid two-phase refrigerant and flows into the outdoor heat exchanger 40. The low-pressure gas-liquid two-phase refrigerant flowing into the outdoor heat exchanger 40 exchanges heat with the outdoor air supplied by the outdoor fan 45 to evaporate into a low-pressure gas refrigerant. And flows into the accumulator 41.

  Hereinafter, operations of the cooling projection member 80 and the heating projection member 81 that function during the cooling operation and the heating operation, respectively, will be described.

<Operation of Projecting Member 80 for Cooling and Projecting Member 81 for Heating>
(1) Operation of cooling projection member 80 A rack formed on the cooling projection member 80 meshes with a pinion gear provided below the cooling projection member 80, and the pinion gear is driven by the motor. As a result, the cooling projecting member 80 moves.

  Specifically, the cooling projecting member 80 is accommodated along the lower edge of the main casing 200 when the air conditioner 1 is heated or stopped (see FIG. 3). When switched, the first tip 80b (referring to the tip of the two tips located on the inside of the room) passes along the lower edge of the main body casing 200 and passes through the front grill 20 toward the room. Move so that it protrudes. Finally, the cooling projecting member 80 stops in a state of projecting into the upper space in the vicinity of the curved surface 20b (see FIG. 2), and causes the conditioned air blown out from the outlet 21b to flow downward. The curved surface 20b that functions as described above is prevented from functioning. Here, the state in which the cooling projecting member 80 projects into the upper space in the vicinity of the curved surface 20b means that the conditioned air blown from the outlet 21b does not flow downward along the curved surface 20b. From the position where the end surface of the cooling projection member 80 which is not on the first tip end portion 80b side contacts the lowest point of the curved surface 20b, the first tip end portion 80b of the cooling projection member 80. It means a state in which the non-side end protrudes into any space up to a position where it abuts on the uppermost position of the curved surface 20b.

The cooling projecting member 80 that protrudes to the indoor side during the cooling operation of the air conditioner 1 is stopped when the operation of the air conditioner 1 is stopped or switched to the heating operation, as shown in FIG. It returns to the state accommodated along the inner lower edge.

(2) Operation of heating projection member 81 The heating projection member 81 includes a driven gear 85 formed at the third tip portion 84a of the support member 84 and a drive gear provided near the third tip portion 84a. 86 and the drive gear 86 is moved by being driven by the motor 87.

  Specifically, the heating projection member 81 is in a stationary state in which the hood member 82 is housed in the guide rail 83 and the support member 84 is in contact with the main body casing 200 when the air conditioner 1 is in cooling operation or stopped. Yes (see FIG. 2). When switched to the heating operation, the motor 87 is driven and the drive gear 86 is driven, so that the support member 84 protrudes toward the indoor side from the state in contact with the main body casing 200. At this time, the hood member 82 fixed to the support member 84 protrudes toward the indoor side together with the support member 84. Finally, the state shown in FIG. 3 is obtained.

The heating projecting member 81 that protrudes indoors during the heating operation of the air conditioner 1 stops the operation of the air conditioner 1 or is switched to the cooling operation, as shown in FIG. It returns to the state where it touches inside.

<Air flow in the indoor unit 2>
Hereinafter, the flow of air in the indoor unit 2 will be described with reference to FIGS. 2 and 3.

  In the air conditioning indoor unit 2, when the indoor fan 26 is driven by the fan motor, room air flows into the air conditioning indoor unit 2 from the suction port 21a. The indoor air sucked from the suction port 21a is heat-exchanged by the indoor heat exchanger 27. The conditioned air heat-exchanged by the indoor heat exchanger 27 flows downward of the indoor heat exchanger 27. The conditioned air passes through the indoor fan 26 and is blown out into the room from the air outlet 21b.

  Here, during the cooling operation, since the cooling projecting member 80 protrudes, even if the conditioned air passing through the outlet 21b flows downward, it collides with the cold air guide surface 80a, so that it easily flows upward (FIG. 2). Arrow A1). During cooling operation, the cooling projecting member 80 protrudes into the upper space in the vicinity of the curved surface 20b so that the curved surface 20b does not function, so the conditioned air passing through the outlet 21b is guided downward by the curved surface 20b. Never be.

  In addition, here, since the heating projecting member 81 protrudes during the heating operation, even if the conditioned air that has passed through the air outlet 21b flows upward, it collides with the warm air guide surface 81a, so that it tends to flow downward ( (See arrow A2 in FIG. 3). Moreover, since the curved surface 20b is formed in the lower formation part 20a, when the air-conditioning air which passes the blower outlet 21b passes the vicinity of the curved surface 20b, a Counder effect arises and it flows so that it may flow along the surface below. It has become.

<Characteristics of the indoor unit 2 of the air conditioner 1 according to the first embodiment>
(1)
During the heating operation of the air conditioner, the warmed conditioned air is lighter than the room air and therefore tends to flow upward in the room. In addition, in the case of a wall-embedded air conditioner, the wall surface and the outlet through which the conditioned air can be blown out are almost at the same position, so that the conditioned air is blown directly down even when the horizontal flap angle is maximally downward. It cannot be done and it does not flow to the floor. For this reason, even if the user of the air conditioner wants to warm his feet, there may be a case where the user cannot be warmed.

  Therefore, in the indoor unit 2 of the air conditioner 1 according to the first embodiment, the heating projection member 81 is housed in the main body casing 200, and the heating projection member 81 is the upper edge of the outlet 21b during the heating operation. It moves from the vicinity of the wall to the indoor side of the wall surface W and protrudes.

  Thereby, the warm air that tends to flow upward collides with the warm air guide surface 81a of the heating projecting member 81, and easily flows downward. Therefore, it becomes easy for warm air to reach the floor surface, and user comfort is improved.

  Further, a curved surface 20b having a semicircular arc shape is formed in the lower forming portion 20a from the opposite side of the room side to the room side with the wall surface W interposed therebetween, and the conditioned air passing through the outlet 21b is sent to the curved surface 20b. Along the bottom.

  Thereby, the warmed conditioned air reaches the floor surface.

(2)
In the wall-embedded air conditioner, since the wall surface and the air outlet are almost at the same position, it is assumed that the cooled air does not reach the corner of the room even when the flap is leveled during the cooling operation. Moreover, since the cooled air is heavier than room air, it tends to flow downward in the room.

  Therefore, in the indoor unit 2 of the air conditioner 1 of the present embodiment, the cooling projecting member 80 is provided, and during the cooling operation, the cooling projecting member 80 moves from the inside of the main body casing 200 to the indoor side and projects. The cooling projecting member 80 has a configuration in which a first tip portion 80b is inclined upward with respect to a horizontal plane.

  As a result, the conditioned air that has passed through the air outlet 21b can collide with the cooling projecting member 80 and flow upward and further away. Thereby, since the cooled air spreads in the whole room, a user's comfort improves.

  Further, the cooling projecting member 80 projects from the state accommodated along the lower edge of the main body casing 200 toward the indoor side toward the upper space in the vicinity of the curved surface 20b. The conditioned air passing therethrough is prevented from being guided downward along the curved surface 20b.

<Modification of the indoor unit 2 of the air conditioner 1 according to the first embodiment>
In the above-described embodiment, the air conditioner 1 is described as being capable of performing both the cooling operation and the heating operation, but may be the air conditioner 1 capable of performing only one of the operations. Further, the indoor unit 2 has been described as including both the cooling projecting member 80 and the heating projecting member 81, but the present invention is not limited to this, and only one of them may be provided.

<Second Embodiment>
The indoor unit 210 of the air conditioner 1 according to the second embodiment is partially different from the configuration of the indoor unit 2 of the air conditioner 1 according to the first embodiment. Specifically, the indoor unit 210 according to the second embodiment is provided with a heating projection member 110 instead of the heating projection member 81 according to the first embodiment, and includes the horizontal flap 24 and the cooling projection member 80. Not provided.

  Hereinafter, the heating projection member 110 having a configuration different from that of the indoor unit 2 according to the first embodiment will be described. In addition, about the same member as the indoor unit 2 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

<Heating protrusion 110>
The heating projecting member 110 is a movable box-shaped member having openings on the back surface and the bottom. In the indoor unit 210 according to the second embodiment, the opening S (see FIG. 6) provided in the lower portion serves as the air outlet 21b, and the opening provided in the back portion includes the conditioned air that has passed through the indoor fan 26 is a protruding member for heating. It becomes an inlet flowing into 110.

  As shown in FIGS. 5 and 6, the heating projecting member 110 is in contact with the front grille 20 and has a first part 110 a having a horizontal surface, and a second part having a first surface 111 that is in contact with the first part 110 a. 110b, and a third portion 110c and a fourth portion 110d that extend downward from the outer edge of the first portion 110a.

  The 1st part 110a has the warm air guide surface 181a which guides the conditioned air which blows off from the blower outlet 21b to the inner surface.

  The second part 110b is rotatable about a line that is a boundary between the first part 110a and the second part 110b, and the first surface 111 is a vertical surface (see FIG. 6) and a horizontal plane. A certain state (see FIG. 8) can be taken.

  A rack forming member 112 in which a rack is formed is fixed to the third portion 110c and the fourth portion 110d of the heating projecting member 110, and a pinion gear is provided below the rack forming member 112. Yes. The rack forming member 112 and the pinion gear mesh with each other, and the heating projection member 110 is moved when the pinion gear is driven by a motor. Specifically, the heating projecting member 110 can take a state in which the first part 110a and the second part 110b protrude to the indoor side as shown in FIG. 6 during the heating operation. As shown in FIG. 7, it is possible to adopt a state in which the first surface 111 of the second part 110 b is located at the same position as the front grill 20.

  In the cooling operation, as shown in FIG. 8, the second portion 110b is lifted up until the first surface 111 becomes horizontal.

<Air flow during heating operation in indoor unit 210>
Hereinafter, the air flow during the heating operation in the indoor unit 210 will be described with reference to FIG.

  The air flow during the heating operation in the indoor unit 210 is the same as the air flow in the indoor unit 2 according to the first embodiment until the room air is sucked from the suction port 21a and passes through the indoor fan 26. The conditioned air that has passed through the indoor fan 26 flows toward the projecting member 110 for heating. And since the protrusion member 110 for heating has the box-shaped form which has the opening part S in the lower part, conditioned air flows below the opening part S and blows off indoors (refer arrow A3). .

  Here, even when the warmed conditioned air that has flowed into the heating projection member 110 is about to flow upward, the heating projection member 110 remains on the upper side (specifically, the inner surface of the first portion 110a). ) Has the warm air guide surface 181a, the conditioned air can collide with the warm air guide surface 181a and be guided downward. And since the heating projection member 110 has a box-like shape having the opening S in the lower part, the conditioned air collided with the warm air guide surface 181a can be guided as it is. .

  During the cooling operation, the first surface 111 of the second portion 110b is lifted until it becomes horizontal, so that the conditioned air that has exited the indoor fan 26 does not flow downward along the form of the heating projection member 110 as it is. I have to.

<Characteristics of the indoor unit 210 of the air conditioner 1 according to the second embodiment>
In the indoor unit 210 of the air conditioner 1 according to the second embodiment, a box-shaped heating projection member 110 having an opening S at the bottom is provided. The heating projecting member 110 projects from the state housed in the main body casing 250 to the indoor side during the heating operation of the air conditioner 1.

  By the first part 110a, the second part 110b, the third part 110c, and the fourth part 110d of the heating projection member 110, the conditioned air that passes through the indoor fan 26 toward the indoor side flows directly upward or laterally. Can not be. Therefore, the conditioned air that has flowed into the heating projecting member 110 is guided downward. In addition, since the first portion 110a of the heating projection member 110 has the warm air guide surface 181a on the inside, the conditioned air flowing into the heating projection member 110 through the indoor fan 26 flows upward. However, it can be guided downward by colliding with the warm air guide surface 181a.

  Therefore, since the conditioned air conditioned in the indoor unit 210 can reach the floor surface, user comfort is improved.

  In the cooling operation, the second surface 110b is lifted until the first surface 111 becomes horizontal. Thus, the conditioned air can be prevented from being guided downward by the heating projecting member 110.

<Third Embodiment>
In the indoor unit 2 according to the third embodiment, the storage position and operation of the cooling projection member 180 are different from those of the cooling projection member 80 according to the first embodiment. Hereinafter, the cooling projecting member 180 according to the third embodiment will be described. In addition, about the same member as the indoor unit 2 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

<Cooling projection member 180 according to the third embodiment>
As shown in FIG. 9, the cooling projecting member 180 according to the third embodiment has a cool air guide surface 180 a that guides cooled conditioned air that tends to flow downward on the upper end surface thereof.

  The cooling projecting member 180 according to the third embodiment is housed below the curved surface forming portion 90 in which the curved surface 20b is formed at the top when the air conditioner 1 is stopped or heated (see FIG. 9). (Refer to the cooling projecting member 180 in the dotted line portion). Then, during the cooling operation of the air conditioner 1, the air conditioner 1 moves from the housed state to the indoor side, and finally protrudes to the space below the curved surface 20b (the cooling projection member 180 in the solid line portion in FIG. Reference).

  Here, the lower space is a space below the curved surface 20b from the lowermost position, and is a space from the outlet 21b to a position where the cooled air that is directed downward can be directed upward. means.

<Characteristics of the indoor unit 2 of the air conditioner 1 according to the third embodiment>
Even if the conditioned air blown out from the air outlet 21b is guided downward along the curved surface 20b, the cooling projecting member 180 protrudes into the space below the curved surface 20b. It can be made to collide with the guide surface 180a. Thereby, the conditioned air that has flowed downward can be directed upward.

  The present invention is useful because it improves the problem of airflow and improves the comfort of the user.

The system diagram of the refrigerant circuit of an air conditioner. Sectional drawing when it cuts so that it may be an indoor unit at the time of the cooling operation which concerns on 1st Embodiment, and it passes along the support member of the protrusion member for heating in the surface orthogonal to the front of an indoor unit. Sectional drawing which shows the case where the indoor unit at the time of heating operation which concerns on 1st Embodiment is cut | disconnected by the cut surface in FIG. The figure which shows the protrusion member for heating which concerns on 1st Embodiment. Sectional drawing at the time of cut | disconnecting the indoor unit at the time of the heating operation which concerns on 2nd Embodiment by the cut surface in FIG. The image figure of the state which the protrusion member for heating which concerns on 2nd Embodiment protrudes. The image figure of the state by which the protrusion member for heating which concerns on 2nd Embodiment is accommodated in the main body casing. The image figure in the air_conditionaing | cooling operation of the protrusion member for heating which concerns on 2nd Embodiment. Sectional drawing at the time of cut | disconnecting in the cut surface in FIG. 2 of an indoor unit which shows the protrusion member for cooling which concerns on 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Indoor unit 20 Front grille (air outlet formation member)
20a Lower formation part 20b Curved surface 21b Air outlet 24 Horizontal flap (blowing direction changing member)
80 Projection member for cooling 80a Cold air guide surface (first blowing air guide surface)
81 Projection member for heating 81a Warm air guide surface (second blown air guide surface)
110 Projection member for heating 110a 1st part 110b 2nd part 180 Projection member for cooling 180a Cold air guide surface (1st blowing air guide surface)
181a Warm air guide surface (second blowing air guide surface)
210 Indoor unit

Claims (6)

An indoor unit (2,210) of an air conditioner (1) that is embedded in a wall surface of a room and performs at least a cooling operation or a heating operation,
An air outlet forming member (20) that forms an air outlet (21b) capable of blowing air-conditioned air that has been air-conditioned by performing the cooling operation or the heating operation;
During the cooling operation, the cooling projecting member (80a, 180a) has a first blown air guide surface (80a, 180a) projecting from the vicinity of the lower edge of the air outlet (21b) to the indoor side of the wall surface. , 180) and / or second air guide surfaces (81a, 181a) projecting from the vicinity of the upper edge of the air outlet (21b) to the indoor side of the wall surface and projecting during the heating operation. A heating projection member (81, 110) having:
An indoor unit (2,210) of an air conditioner (1) comprising: Performing the cooling operation and the heating operation,
The cooling projecting member (80, 180) and the heating projecting member (81, 110),
The cooling projecting members (80, 180) are housed in a first position that does not project to the indoor side of the air outlet forming member (20) during the heating operation.
The heating projecting members (81, 110) are housed in a second position that does not project to the indoor side of the air outlet forming member (20) during the cooling operation.
The indoor unit (2,210) of the air conditioner (1) according to claim 1. A cooling direction changing member (24) that changes the blowing direction of the conditioned air by an operation different from the cooling protruding member (80, 180) and / or the heating protruding member (81);
The indoor unit (2) of the air conditioner (1) according to claim 1 or 2. Comprising at least the heating projecting member (110),
The heating projecting member (110)
A first portion (110a) having a horizontal plane or a plane with an angle close to the horizontal plane;
A second part (110b) having a vertical plane or a plane with an angle close to the vertical plane and located far from the wall;
Having
The indoor unit (210) of the air conditioner (1) according to any one of claims 1 to 3. Performing the cooling operation and the heating operation,
At least the cooling projecting member (80),
The air outlet forming member (20) has a lower part forming part (20a) that forms a lower part of the air outlet (21b),
The lower forming part (20a) is formed with a curved surface (20b),
The cooling projecting member (80) projects into the space above the curved surface (20b) during the cooling operation.
The indoor unit (2) of the air conditioner (1) according to any one of claims 1 to 4. Performing the cooling operation and the heating operation,
At least the cooling projecting member (180),
The air outlet forming member (20) has a lower part forming part (20a) that forms a lower part of the air outlet (21b),
The lower forming part (20a) is formed with a curved surface (20b),
The cooling projecting member (180) projects into a space below the curved surface (20b) during the cooling operation.
The indoor unit (2) of the air conditioner (1) according to any one of claims 1 to 4.

Images