JP3998030B2 - Ceiling-mounted air conditioner - Google Patents

Description

  The present invention relates to a ceiling-mounted air conditioner, in particular, a casing having a substantially rectangular shape in plan view, a heat exchanger disposed in the casing so as to extend along the two long sides of the casing, and a short of the heat exchanger. The present invention relates to a ceiling-mounted air conditioner including a blower fan arranged between sides.

As a conventional ceiling-mounted air conditioner, a plan view has a substantially rectangular casing, and in the plan view of the casing, a heat exchanger is disposed along two long sides of the casing, There is one in which a blower fan is disposed between the casing short sides of the exchanger. In such a ceiling-mounted air conditioner, a drain pan is disposed below the heat exchanger. In the drain pan, a drain water receiving portion that receives drain water generated by condensation of moisture in the air in the heat exchanger is formed along the arrangement of the heat exchanger. That is, the drain water receiving portion is formed so as to extend from one end side to the other end side in the casing long side direction along two long sides of the drain pan in a plan view of the casing. The two drain water receiving portions are provided with a gradient of a predetermined angle so that drain water flows from one end side in the casing long side direction toward the other end side, near the other end in the casing long side direction. Is set at a position lower than the height position of the drain water receiving portion, and a drain water storage portion for storing drain water flowing in from the two drain water receiving portions is formed. The drain water storage part is provided with a drain pump for discharging drain water received by the drain water receiving part and flowing into the drain water storage part to the outside of the casing.
Japanese Patent Laid-Open No. 9-53837

  However, in the conventional ceiling-mounted air conditioner, as described above, the drain pump is disposed in the drain water storage part formed near the other end in the casing long side direction, and the drain water is stored in the drain water storage part. In order to be able to flow in quickly, a gradient is provided from one end side to the other end side in the casing long side direction of the drain water receiving portion. In the conventional ceiling-mounted air conditioner, the height of the drain pan is increased in order to ensure such a gradient.

  On the other hand, recently, it has been demanded to reduce the height of the ceiling-mounted air conditioner to make it thinner, but the height of the drain pan for ensuring the gradient of the drain water receiving portion as described above. Due to dimensional constraints, sufficient thickness reduction has not been realized.

  An object of the present invention is a casing having a substantially rectangular shape in plan view, a heat exchanger disposed in the casing along the two long side directions of the casing, and a short side direction of the heat exchanger. In a ceiling-mounted air conditioner equipped with a blower fan, the height dimension of the drain pan is reduced to enable a reduction in thickness.

The ceiling-mounted air conditioner according to the first invention includes a casing having a substantially rectangular shape in plan view, a heat exchanger, a blower fan, a drain pan, and a drain pump. The heat exchanger is disposed in the casing along the two long sides of the casing in a plan view of the casing. There are two blower fans , and they are arranged between the casing short sides of the heat exchanger and in the casing long sides in the plan view of the casing. The drain pan has a groove for receiving drain water generated by condensation of moisture in the air in the heat exchanger. The groove part is formed so as to connect the lower part of the part along the two long sides of the casing of the heat exchanger and the two parts at substantially the center in the casing long side direction. The drain pump discharges drain water received in the groove portion out of the casing. The lowermost part of the groove part and the drain pump are substantially at the center in the longitudinal direction of the casing in the plan view of the casing , and along a part along one of the two long sides of the casing of the heat exchanger and the other long side of the casing. It is arrange | positioned between the parts along .

  In this ceiling-mounted air conditioner, since the lowermost part of the drain pump and drain pan groove is arranged at the approximate center in the casing long side direction, the lowermost part of the drain pump and drain pan groove is one end side in the casing long side direction. Compared with the case where it arrange | positions to, the distance from the position most distant from the lowest part of a groove part to the lowest part of a groove part becomes short among groove parts. Thereby, in this ceiling-mounted air conditioner, the height dimension of the drain pan necessary for providing a gradient in the groove portion of the drain pan can be reduced, so that the ceiling-mounted air conditioner can be made thinner.

Moreover, in this ceiling-mounted air conditioner, the drain pump is disposed between a portion along one of the two long sides of the casing of the heat exchanger and a portion along the other long side of the casing. The noise resulting from the operation sound of the drain pump can be reduced.

  A ceiling-mounted air conditioner according to a second aspect of the present invention is the ceiling-mounted air conditioner according to the first aspect of the present invention, wherein the drain pump has drain water discharged outside the casing by drain water discharged from the drain pump. A drain pipe for sending to the pipe is connected.

  The ceiling-mounted air conditioner pertaining to the third invention is the ceiling-mounted air conditioner pertaining to the second invention, wherein the drain pipe is disposed between the blower fan and the heat exchanger.

  In this ceiling-mounted air conditioner, when the operation of cooling the air passing through the heat exchanger is performed, moisture in the air is condensed and drain water is generated, and after this drain water is received by the groove portion Then, it is sent to the drain drain pipe outside the casing through the drain pipe by the drain pump. At this time, in this ceiling-mounted air conditioner, since the drain pipe is installed between the blower fan and the heat exchanger, the air is cooled by the drain water flowing in the drain pipe. Thereby, in this ceiling-mounted air conditioner, the cooling water of the drain water generated by the operation in which the air passing through the heat exchanger is cooled can be effectively used.

  The ceiling-mounted air conditioner according to a fourth aspect of the present invention is the ceiling-mounted air conditioner according to the third aspect of the present invention, wherein the drain pipe is disposed at a position substantially immediately above the groove.

  In this ceiling-mounted air conditioner, since the drain pipe is disposed at a position almost immediately above the groove, the operation of cooling the air passing through the heat exchanger is performed, so that the drain generated in the drain pipe is performed. Can receive water reliably.

  The ceiling-mounted air conditioner pertaining to the fifth invention is the ceiling-mounted air conditioner pertaining to the third or fourth invention, wherein the drain pipe is made of copper.

  In this ceiling-mounted air conditioner, since the drain pipe is made of copper, the thermal conductivity is high, and cooling of the air by the drain water can be promoted.

A ceiling-mounted air conditioner according to a sixth aspect of the present invention is the ceiling-mounted air conditioner according to any of the first to fifth aspects of the present invention, wherein the two long sides of the casing of the heat exchanger are viewed in plan view of the casing. The center part of the heat exchange, which is a substantially central part in the casing long side direction, of the part along one of the two parts protrudes toward the other long side of the casing.

  In this ceiling-mounted air conditioner, in the plan view of the casing, the central portion of the heat exchange, which is a substantially central portion in the casing long side direction, of the portions along one of the two long sides of the casing of the heat exchanger is Since it protrudes toward the other long side, a portion along one of the two long sides of the casing of the heat exchanger in the drain pan groove portion is positioned at the substantially central position in the casing long side direction. Can be connected to the long side. Moreover, since the heat transfer area of the heat exchanger can be increased by projecting the heat exchange center part toward the other long side of the casing, the heat exchange capacity can be improved, or the long side direction of the casing Can be reduced in size. And when reducing the size in the longitudinal direction of the casing, since the distance from the position farthest from the lowest part of the groove part to the lowest part of the groove part is further shortened among the groove parts, in order to provide a gradient in the groove part of the drain pan The required drain pan height can be further reduced.

A ceiling-mounted air conditioner according to a seventh aspect includes a casing having a substantially rectangular shape in plan view, a heat exchanger, a blower fan, a drain pan, and a drain pump. The heat exchanger is disposed in the casing along the two long sides of the casing in a plan view of the casing. There are two blower fans , and they are arranged between the casing short sides of the heat exchanger and in the casing long sides in the plan view of the casing. The drain pan has a groove for receiving drain water generated by condensation of moisture in the air in the heat exchanger. The groove part is formed so as to connect the lower part of the part along the two long sides of the casing of the heat exchanger and the two parts at substantially the center in the casing long side direction. The drain pump discharges drain water received in the groove portion out of the casing. In a plan view of the casing, a heat exchange central portion that is a substantially central portion in the casing long side direction out of a portion along one of the two long sides of the casing of the heat exchanger projects toward the other long side of the casing. ing. In the plan view of the casing, the lowermost part of the groove part and the drain pump are formed in a space formed on the side of the heat exchange center part on the side opposite to the air blowing fan by projecting the heat exchange center part in the longitudinal direction of the casing. Has been placed.

  In this ceiling-mounted air conditioner, since the lowermost part of the drain pump and drain pan groove is arranged at the approximate center in the casing long side direction, the lowermost part of the drain pump and drain pan groove is one end side in the casing long side direction. Compared with the case where it arrange | positions to, the distance from the position most distant from the lowest part of a groove part to the lowest part of a groove part becomes short among groove parts. Thereby, in this ceiling-mounted air conditioner, the height dimension of the drain pan necessary for providing a gradient in the groove portion of the drain pan can be reduced, so that the ceiling-mounted air conditioner can be made thinner.

Moreover, in this ceiling-mounted air conditioner, in the plan view of the casing, the heat exchange central portion, which is a substantially central portion in the casing long side direction, of the portion along one of the two long sides of the casing of the heat exchanger, Since it protrudes toward the other long side of the casing, a portion along one of the two long sides of the casing of the heat exchanger in the groove portion of the drain pan is positioned at a substantially central position in the casing long side direction. It can be connected to the other long side portion.

In addition, by projecting the heat exchange center part toward the other long side of the casing, the heat transfer area of the heat exchanger can be increased, so that the heat exchange capacity can be improved, or the long side direction of the casing Can be reduced in size. Here, when the size of the casing in the longitudinal direction is reduced, the distance from the position farthest from the lowest part of the groove part to the lowest part of the groove part is further shortened, so that a gradient is provided in the groove part of the drain pan. The height of the drain pan required for the process can be further reduced.

Furthermore, in this ceiling-mounted air conditioner, the drain pump is disposed on the side of the heat exchange center opposite to the air blowing fan, so that the heat exchange center is projected toward the other long side of the casing. Space can be used effectively.

A ceiling-mounted air conditioner according to an eighth aspect of the present invention is the ceiling-mounted air conditioner according to the seventh aspect of the present invention, wherein the drain pump has drain water discharged outside the casing by drain water discharged from the drain pump. A drain pipe for sending to the pipe is connected.

A ceiling-mounted air conditioner according to a ninth invention is the ceiling-mounted air conditioner according to any of the second to sixth and eighth inventions, wherein the drain pipe is inclined downward toward the drain drain pipe. It is arranged to be.

  In this ceiling-mounted air conditioner, the drain pipe is arranged so as to be inclined downward toward the drain drain pipe, so drain water outside the casing is promoted, and the drain that flows backward when the drain pump stops The amount of water can be reduced.

A ceiling-mounted air conditioner according to a tenth aspect of the present invention is the ceiling-mounted air conditioner according to any of the second to sixth, eighth, and ninth aspects, wherein the heat exchanger is disposed outside the casing. A refrigerant pipe for exchanging refrigerant with the refrigerant communication pipe installed is connected. The drain pipe is disposed so as to penetrate the casing from the vicinity of the position where the refrigerant pipe penetrates the casing.

  In this ceiling-mounted air conditioner, since the drain pipe is disposed so as to penetrate the casing from the vicinity of the position where the refrigerant pipe penetrates the casing, it is possible to improve workability of piping construction.

A ceiling-mounted air conditioner pertaining to an eleventh aspect of the invention is the ceiling-mounted air conditioner pertaining to any of the sixth to tenth aspects of the invention, wherein the two long sides of the casing of the heat exchanger are viewed in plan view of the casing. Among the portions along one of these, the heat exchange end portion which is the end portion in the casing long side direction extends toward the other long side of the casing.

  In this ceiling-mounted air conditioner, in the plan view of the casing, the heat exchange end portion, which is the end portion in the casing long side direction, of the portion along one of the two long sides of the casing of the heat exchanger is the other side of the casing. Therefore, the heat transfer area of the heat exchanger can be further increased. Thereby, in this ceiling-mounted air conditioner, the heat exchange capability can be further improved, and the size of the casing in the long side direction can be further reduced. And when reducing the size in the longitudinal direction of the casing, since the distance from the position farthest from the lowest part of the groove part to the lowest part of the groove part is further shortened among the groove parts, in order to provide a gradient in the groove part of the drain pan The required drain pan height can be further reduced.

  As described above, according to the present invention, the following effects can be obtained.

In the 1st or 2nd invention, since the height dimension of a drain pan required in order to provide a gradient in the groove part of a drain pan can be made small, thickness reduction of a ceiling installation type air conditioning apparatus is attained. In addition, it is possible to reduce the noise caused by the operation sound of the drain pump.

  In the third aspect of the invention, it is possible to effectively use the cold energy of the drain water generated by the operation in which the air passing through the heat exchanger is cooled.

  In the fourth aspect of the invention, the operation of cooling the air passing through the heat exchanger is performed, so that drain water generated in the drain pipe can be reliably received.

  In 5th invention, cooling of the air by drain water can be accelerated | stimulated.

In 6th invention, the part which follows one of the two long sides of the casing of a heat exchanger among the groove parts of a drain pan is connected with the part of the other long side side of a casing in the position of the approximate center of a casing long side direction. be able to. Moreover, since the heat transfer area of the heat exchanger can be increased, the heat exchange capacity can be improved and the size of the casing in the long side direction can be reduced. And when reducing the size in the longitudinal direction of the casing, since the distance from the position farthest from the lowest part of the groove part to the lowest part of the groove part is further shortened among the groove parts, in order to provide a gradient in the groove part of the drain pan The required drain pan height can be further reduced.

In 7th or 8th invention, since the height dimension of a drain pan required in order to provide a gradient in the groove part of a drain pan can be made small, thickness reduction of a ceiling installation type air conditioning apparatus is attained. In addition, a portion along one of the two long sides of the casing of the heat exchanger in the groove portion of the drain pan can be connected to a portion on the other long side of the casing at a substantially central position in the casing long side direction. Moreover, since the heat transfer area of the heat exchanger can be increased, the heat exchange capacity can be improved, and the size of the casing in the long side direction can be reduced. Here, when the size of the casing in the longitudinal direction is reduced, the distance from the position farthest from the lowest part of the groove part to the lowest part of the groove part is further shortened, so that a gradient is provided in the groove part of the drain pan. The height of the drain pan required for the process can be further reduced. Furthermore, the space formed by projecting the heat exchange center part toward the other long side of the casing can be used effectively.

In the ninth invention, drainage of the drain water to the outside of the casing is promoted, and the amount of drain water flowing back when the drain pump is stopped can be reduced.

In the tenth invention, the workability of piping construction can be improved.

In the eleventh aspect , since the heat transfer area of the heat exchanger can be further increased, the heat exchange capability can be further improved, and the size of the casing in the long side direction can be further reduced. And when reducing the size in the longitudinal direction of the casing, since the distance from the position farthest from the lowest part of the groove part to the lowest part of the groove part is further shortened among the groove parts, in order to provide a gradient in the groove part of the drain pan The required drain pan height can be further reduced.

  Hereinafter, an embodiment of a ceiling-mounted air conditioner according to the present invention will be described based on the drawings.

(1) Basic Configuration of Ceiling-Installed Air Conditioner FIG. 1 is an external perspective view (ceiling is omitted) of a ceiling-mounted air conditioner 1 according to an embodiment of the present invention. The air conditioner 1 of this embodiment is an air conditioner installed in a ceiling-embedded form, and mainly includes a casing 2 that houses various components inside.

  As shown in FIGS. 1 to 6, the casing 2 mainly includes a box-shaped casing body 2 a having a substantially rectangular shape in plan view and an open bottom surface, and a casing so as to cover the opening on the bottom surface of the casing body 2 a. And a drain pan 2b attached to the lower part of the main body 2a. Here, FIG. 2 is a schematic cross-sectional view of the air-conditioning apparatus 1 and corresponds to a cross-section AA in FIG. FIG. 3 is a schematic plan view of the air conditioner 1 with the top plate 21 removed as viewed from above. FIG. 4 is a schematic cross-sectional view of the air conditioner 1, and corresponds to a cross section taken along the line BB of FIG. FIG. 5 is a schematic cross-sectional view of the air-conditioning apparatus 1 and corresponds to a CC cross-section of FIG. FIG. 6 is a schematic cross-sectional view of the air-conditioning apparatus 1 and corresponds to a DD cross section of FIG.

  The casing body 2a constitutes an upper surface and a side surface of the casing 2, and in a plan view, a substantially rectangular top plate 21 formed such that long sides and short sides are alternately continued, and the top plate 21 Side plates 22, 23, 24, and 25 that extend downward from the peripheral edge portion. The side plates 22 and 24 correspond to the long sides of the top plate 21, respectively, and constitute a pair of opposite sides facing each other. The side plates 23 and 25 respectively correspond to the short sides of the top plate 21 and constitute a pair of opposite sides facing each other.

  The drain pan 2b constitutes the lower surface of the casing 2, and is a substantially rectangular plate-like member formed so that the long sides and the short sides are alternately continuous in the plan view, like the top plate 21. The drain pan body 26 is provided.

  The drain pan body 26 is formed with a plurality of (here, two) suction openings 26 a and 26 b in the plan view of the casing 2. The suction openings 26a and 26b are arranged at positions that are substantially symmetrical with respect to a plane that divides the drain pan 2b into two in the longitudinal direction of the casing 2 in a plan view of the casing 2, and in the plan view of the casing 2 It is arranged at a substantially central position in the short side direction. The suction openings 26a and 26b are substantially circular holes in the present embodiment. Here, the casing long side direction refers to a direction along the side plates 22 and 24 of the casing 2. Further, the casing short side direction refers to a direction along the side plates 23 and 25 of the casing 2, and is orthogonal to the casing long side direction in a plan view of the casing 2. Of the suction openings 26a and 26b, the suction opening on the side plate 23 side is referred to as a suction opening 26a, and the suction opening on the side plate 25 side is referred to as a suction opening 26b.

  Further, the drain pan body 26 is formed with a plurality (two in this case) of blowout openings 26c and 26d in a plan view of the casing 2. The blowout openings 26c and 26d are arranged at positions on both ends (that is, the side plates 22 and 24 side) of the drain pan main body 26 in the casing short side direction in the plan view of the casing 2. In the present embodiment, the blowout openings 26c and 26d are elongated cutout portions extending along two long sides of the drain pan body 26 in a plan view of the casing 2. Of the blowing openings 26c and 26d, the blowing opening on the side plate 22 side is referred to as a blowing opening 26c, and the blowing opening on the side plate 24 side is referred to as a blowing opening 26d. Thus, the blower openings 26c and 26d are formed in the drain pan main body 26, so that the lower surface of the casing 2 is substantially rectangular surrounded by the blower opening 26c and the inner surface of the side plate 22 along the long side direction of the casing. A substantially rectangular hole surrounded by the blowout opening 26d and the inner surface of the side plate 24 is formed.

  A blower fan 3 is disposed in the casing 2. In the present embodiment, the blower fan 3 is opposed to the suction openings 26 a and 26 b, and the rotation axis OO extends in the vertical direction. Are the two blower fans 3a and 3b. The blower fans 3a and 3b are turbo fans. The blower fan 3a includes a fan motor 31a provided at a position facing the suction opening 26a of the top plate 21, and an impeller 32a connected to the fan motor 31a and driven to rotate. 3b has a fan motor 31a provided at a position facing the suction opening 26b of the top plate 21, and an impeller 32b connected to the fan motor 31a and driven to rotate. The impellers 32a and 32b can suck air from the lower side and blow out toward the outer peripheral side.

  Further, a bell mouth 4a having a shape that spreads downward from the vicinity of the tip on the suction opening 26a side of the impeller 32a is disposed in the suction opening 26a of the drain pan 2b, and the impeller 32b is disposed in the suction opening 26b. A bell mouth 4b having a shape that spreads downward from the vicinity of the tip on the suction opening 26b side is arranged.

  In the casing 2, a heat exchanger 5 is disposed in the casing 2 along the two long sides of the casing 2 in a plan view of the casing 2. In the present embodiment, the heat exchanger 5 includes a heat exchanger 5a extending along the side plate 22 of the casing 2 between the blower opening 26c and the blower fans 3a and 3b along the side plate 22, and the blower opening 26d and the blower fan 3a. The heat exchanger 5b extends along the side plate 24 of the casing 2 between the short side directions of the casing 3b. In the present embodiment, the heat exchangers 5 a and 5 b extend straight from a position near the side plate 23 to a position near the side plate 25. The upper ends of the heat exchangers 5a and 5b extend substantially vertically downward from the inner surface of the top plate 21 of the casing 2 toward the upper surface of the drain pan 2b. The heat exchangers 5a and 5b include, for example, a fin-and-tube heat exchanger using a cross fin or the like, a stacked heat exchanger using a corrugated fin, or the like. The heat exchanger 5 is connected to refrigerant pipes 53 and 54 for exchanging refrigerant with the refrigerant communication pipes 51 and 52 installed outside the casing 2 (in connection with the heat exchanger 5). The details are not shown) and are arranged so as to penetrate the side plate 23 of the casing 2. The refrigerant communication pipes 51 and 52 are connected to an outdoor unit (not shown) and the like, and constitute a refrigerant circuit for circulating the refrigerant between the air conditioner 1.

  A decorative panel 6 is attached to the lower end of the casing 2. The decorative panel 6 is a substantially rectangular member that is larger than the casing 2 (that is, the top plate 21 and the drain pan 2b) in a plan view, and has a suction port 61 that communicates with both of the two suction openings 26a and 26b of the casing 2. And air outlets 62a and 62b communicating with the air outlets 26c and 26d of the casing 2 are formed. The air outlets 62a and 62b are elongated rectangular holes arranged so as to face the air outlets 26c and 26d in the vertical direction and along the long side of the decorative panel 6. The suction port 61 is an opening arranged at a position sandwiched from both sides by the air outlet 62a and the air outlet 62b. In addition, a cover panel 61a smaller than the opening size of the suction port 61 is disposed substantially at the center of the suction port 61, and substantial suction ports are formed on both sides of the cover panel 61a in the short side direction of the decorative panel. . Further, a filter 61b is disposed above the cover panel 61a of the suction port 61.

(2) Detailed structure of drain pan and drain pump First, the detailed structure of the drain pan 2b will be described. The drain pan 2b is formed with drain water receiving portions 26e, 26f, 26g and a drain water storing portion 26h as grooves for receiving drain water generated by condensation of moisture in the air in the heat exchanger 5.

  The drain water receiving portion 26e has a substantially U-shaped cross-section into which the lower end of the heat exchanger 5a can be inserted, and the drain water receiving portion 26e disposed below the heat exchanger 5a The bottom surface forms a downward gradient from the end on the side plate 25 side toward the approximate center in the casing long side direction, and from the end on the side plate 23 side toward the approximate center in the casing long side direction. It is formed as follows. The inclination angle α (see FIG. 4) of the gradient in the drain water receiving portion 26e is directed from the end on the casing long side direction side plate 25 side or the end on the casing long side direction side plate 23 side to the approximate center in the casing long side direction. It is set to be more than the angle that can drain water. Thereby, when drain water is generated in the heat exchanger 5a, the drain water is received by the drain water receiving portion 26e and flows toward the substantially center of the drain water receiving portion 26e in the casing long side direction. It has become.

  The drain water receiving part 26f has a substantially U-shaped cross section into which the lower end of the heat exchanger 5b can be inserted, and is disposed below the heat exchanger 5b. Similarly to the drain water receiving portion 26e, the drain water receiving portion 26f has a bottom surface inclined downward from the end portion on the side plate 25 side toward the approximate center in the casing long side direction, and on the side plate 23 side. It is formed so as to form a downward gradient from the end toward the approximate center in the casing long side direction. The inclination angle β (see FIG. 5) of the gradient in the drain water receiving portion 26f is from the end on the casing long side direction side plate 25 side or the end on the casing long side direction side plate 23 side to the approximate center in the casing long side direction. The angle is set to be more than the angle at which drain water can flow. In the present embodiment, the inclination angle β and the inclination angle α are set to the same angle. Thereby, when drain water is generated in the heat exchanger 5b, the drain water is received by the drain water receiving portion 26f and flows toward the substantially center of the drain water receiving portion 26f in the casing long side direction. It has become.

  In the present embodiment, the drain water receiving portion 26g has a substantially U-shaped cross section extending from the position in the casing long-side direction substantially center of the heat exchanger 5b toward the casing short-side direction side plate 22 side. More specifically, the drain water receiving part 26g is arrange | positioned so that it may extend between the casing long side directions of the ventilation fan 3a and the ventilation fan 3b. The drain water receiving portion 26g is formed such that the bottom surface forms a downward slope from the end on the drain water receiving portion 26f side toward the casing short side direction side plate 22 side. The inclination angle γ (see FIG. 6) of the gradient in the drain water receiving portion 26g is equal to or greater than the angle at which drain water can flow from the end portion on the drain water receiving portion 26f side toward the casing short side direction side plate 22 side. Is set to In the present embodiment, the inclination angle γ and the inclination angles α and β are set to the same angle. As a result, when drain water is generated in the heat exchanger 5b, the drain water is first received by the drain water receiving portion 26f as described above, and is approximately in the casing long side direction of the drain water receiving portion 26f. After flowing to the center, it further flows from the end of the drain water receiving part 26g on the drain water receiving part 26f side toward the casing short side plate 22 side.

  In this embodiment, the drain water storage part 26h is a relatively large-capacity container part that is disposed substantially at the center in the casing long side direction of the drain pan 2b. More specifically, the drain water storage part 26h is disposed between casing long sides of the blower fan 3a and the blower fan 3b, and is a container portion having a substantially rectangular shape in plan view. The drain water storage portion 26h has a bottom surface that is the height of the bottom surface of the substantially central portion in the casing long side direction of the drain water receiving portion 26e and the portion on the casing short side direction side plate 22 side of the drain water receiving portion 26g. Drain water receiving portions 26e, 26f, 26g as drain portions for receiving drain water generated by condensation of moisture in the air in the heat exchanger 5 and drain water are set to be lower than the bottom surface height. A portion having the lowest bottom surface (that is, the lowermost portion) is formed in the storage portion 26h. And the drain water storage part 26h is connected with the substantially central part of the casing long side direction of the drain water receiving part 26e, and can drain the drain water received in the drain water receiving part 26e. ing. More specifically, the drain water storage portion 26h is disposed such that a portion on the casing short side direction side plate 22 side is in contact with a substantially central portion in the casing long side direction of the drain water receiving portion 26e. Further, the drain water storage portion 26h communicates with a portion of the drain water receiving portion 26g on the casing short side direction side plate 22 side, and drain water received at the drain water receiving portion 26f flows into the drain water receiving portion 26g. It can be made to. More specifically, the drain water storage portion 26h is disposed such that a portion on the casing short side direction side plate 24 side is in contact with a portion on the casing short side direction side plate 24 side of the drain water receiving portion 26g.

  In the present embodiment, the drain water receiving portion 26g extends from the substantially central portion in the casing long side direction of the drain water receiving portion 26f toward the side plate 22 and the drain water storage portion 26h is provided as a drain. Although it is arrange | positioned near the water receiving part 26e, it is not limited to this, For example, the drain water receiving part 26g extends toward the side plate 24 side from the substantially center part of the casing long side direction of the drain water receiving part 26e. And the drain water storage part 26h may be arrange | positioned near the drain water receiving part 26f. Further, the drain water receiving portion 26g extends from the substantially central portion in the casing long side direction of the drain water receiving portion 26e toward the side plate 24, and from the substantially central portion in the casing long side direction of the drain water receiving portion 26f. The drain water storage part 26h may extend toward the side plate 22 side, and may be arranged at the approximate center in the casing short side direction of the drain water receiving part 26e and the drain water receiving part 26f.

  Next, the drain pump 7 will be described. A drain pump 7 for discharging drain water received by the drain water receiving portions 26e, 26f, 26g and the drain water storing portion 26h to the outside of the casing 2 is disposed in the drain water storing portion 26h. The drain pump 7 mainly has a pump body 71 and a pump motor 72 that rotationally drives the pump body 71. In this embodiment, the pump main body 71 is a type of pump that pumps up drain water stored in the drain water storage portion 26h, and the suction port 71a located at the lower end thereof is close to the bottom surface of the drain water storage portion 26h. The discharge port 71b is formed at the side portion (here, the side portion on the side plate 22 side). In the present embodiment, the pump motor 72 is disposed on the upper side of the pump main body 71, and is fixed to the top plate 21 with the pump main body 71 pivotally supported via a support member 73, for example.

  Thus, in the air conditioner 1 of this embodiment, the drain water storage part 26h as the lowest part of the groove part which receives the drain water generated when the moisture in the air is condensed in the heat exchanger 5 is the drain pan 2b. The drain water storage portion 26h is disposed on one end side (for example, the side plate 23 side) in the casing long side direction, as in a conventional ceiling-mounted air conditioner. Compared to the case where the drain water receiving portions 26e and 26f are farthest from the drain water storage portion 26h (that is, the other end side of the drain water receiving portions 26e and 26f in the casing long side direction (for example, the side plate) The distance to the portion 25) is shortened. If it does so, the height dimension of the drain pan 2b required in order to provide the inclination of the above-mentioned inclination-angle (alpha) and (beta) in the drain water receiving parts 26e and 26f as mentioned above can be made small, As a result, the air conditioning apparatus 1 Thinning is realized. In the air conditioner 1, the drain pump 7 includes a heat exchanger 5 a that is a portion along one of the two long sides of the casing 2 of the heat exchanger 5 (here, corresponding to the side plate 22), and a heat exchanger. 5 is disposed between the heat exchanger 5b, which is a portion along one of the two long sides of the casing 2 (corresponding to the side plate 24 in this case), and thus noise caused by the operation sound of the drain pump 7 is reduced. It can be made smaller.

  Further, a drain pipe 75 for sending drain water discharged from the pump main body 71 to a drain drain pipe 74 installed outside the casing 2 is connected to the discharge port 71 b of the pump main body 71. As a result, as in the cooling operation or the dehumidifying operation, the air blown out from the blower fan 3 passes through the heat exchanger 5 and is cooled so that moisture in the air is condensed and drain water is generated. Then, this drain water is sent to the drain drain pipe 74 outside the casing 2 through the drain pipe 75. And this drain pipe 75 is arrange | positioned between the ventilation fan 3 (here ventilation fan 3a) and the heat exchanger 5 (here heat exchanger 5a). Thus, when the drain pipe 75 is installed between the blower fan 3 and the heat exchanger 5, the air blown from the blower fan 3 passes through the drain pipe 75. Then, the air blown out from the blower fan 3 is cooled by the drain water flowing through the drain pipe 75. Thereby, in the air conditioning apparatus 1, it is possible to effectively use the cooling heat of the drain water generated by the operation of cooling the air passing through the heat exchanger 5 such as the cooling operation and the dehumidifying operation. It has become. Moreover, when the drain pipe 75 is disposed between the blower fan 3 and the heat exchanger 5 as in the present embodiment (that is, when the drain pipe 75 is disposed on the upstream side of the flow). The air blown out from the blower fan 3 passes through the heat exchanger 5 after passing through the drain pipe 75 through which drain water having a slightly higher temperature than the refrigerant flowing in the heat exchanger 5 passes. A cold source with a high level can be used for cooling the air first, and the effective use of the cool water of the drain water is further promoted.

  In the present embodiment, the drain pipe 75 is made of copper. For this reason, the thermal conductivity of the drain pipe 75 is high, and cooling of the air by the above-described drain water can be further promoted.

  In the present embodiment, the drain pipe 75 includes drain water receiving portions 26e and 26f and a drain water storage portion 26h serving as a groove portion for receiving drain water generated by condensation of moisture in the air in the heat exchanger 5. It is arranged at a position almost immediately above. More specifically, the drain pipe 75 extends upward from the discharge port 71b located directly above the drain water storage portion 26h, and then drains the drain water storage portion 26h across the casing short side direction side plate 22 side. It extends toward the casing short side direction side plate 22 side until it reaches a position immediately above the water receiving portion 26e (here, a position on the blower fan 3 side of the heat exchanger 5a). Furthermore, the drain pipe 75 is disposed so as to penetrate the side plate 23 after extending a position immediately above the drain water receiving portion 26e toward the casing long side direction side plate 23 side. As described above, in the air conditioner 1, the drain pipes are drain water receiving portions 26e and 26f and drain water storage portions as grooves for receiving drain water generated by condensation of moisture in the air in the heat exchanger 5. Since it is arranged at a position immediately above 26h, the operation of cooling the air passing through the heat exchanger 5 is performed, so that the drain water generated in the drain pipe 75 can be reliably received.

  Further, in the present embodiment, the drain pipe 75 is disposed so as to have a downward slope toward the drain drain pipe 74. More specifically, the portion 75a extending toward the casing long side direction side plate 23 that occupies most of the drain pipe 75 is set to be inclined downward toward the side plate 23 side. Thereby, in the air conditioner 1, drainage of the drain water to the outside of the casing 2 is promoted, and the amount of drain water that flows back to the drain water reservoir 26h when the drain pump 7 is stopped can be reduced. .

  Further, the drain pipe 75 is disposed so as to penetrate the casing 2 (here, the side plate 23) from a position in the vicinity of the position where the refrigerant tubes 53 and 54 penetrate the side plate 23 of the casing 2. Thereby, in the air conditioning apparatus 1, when performing piping construction of the refrigerant pipes 53 and 54, piping of the drain pipe 75 can be easily performed together so that workability of piping construction can be improved. It has become. On the other hand, in consideration of drainage performance outside the drain water casing 2 and prevention of backflow when the drain pump 7 is stopped, it is desirable to make the drain pipe 75 as short as possible. However, as in the present embodiment, the drain pump 7 has a casing. In the case of being arranged at approximately the center of 2, the length of the drain pipe 75 becomes long. However, in the air conditioner 1, as described above, the drain pipe 75 is disposed so as to have a downward slope toward the drain drain pipe 74, thereby draining the drain water outside the casing 2 and the drain pump 7. Since consideration is given to the prevention of backflow at the time of stopping, the length of the drain pipe 75 can be increased. That is, in the air conditioner 1, drainage of the drain water to the outside of the casing 2 and prevention of backflow when the drain pump 7 is stopped, such as the drain pump 7 being arranged at substantially the center of the casing 2 as in the present embodiment. Or, it is configured such that these problems can be solved while the arrangement of the devices is disadvantageous for improving the workability of piping construction.

(3) Modification 1
In the above-described embodiment, the heat exchangers 5a and 5b are connected to the drain water receiving portions 26e and 26f from the top plate 21 when the casing 2 is viewed from the long side direction, as shown in FIGS. Although it has a shape extending vertically downward, as shown in FIG. 7 and FIG. 8, the casing 2 may be arranged to be inclined when viewed from the long side direction. In the present modification, the heat exchanger 5a is arranged so that the upper part is inclined to the side farther from the lower part (that is, the casing short side direction side plate 22 side) than the blower fans 3a and 3b. The heat exchanger 5b is disposed so that the upper part is inclined to the side farther from the lower part (that is, the casing short side direction side plate 24 side) with respect to the blower fans 3a and 3b.

  In this modification, since the heat exchanger 5 is disposed so as to be inclined in the casing 2, the heat transfer area of the heat exchanger 5 can be increased. The size in the long side direction can be reduced. When the size of the casing 2 in the longitudinal direction is to be reduced, the portion of the drain water receiving portions 26e, 26f that is farthest from the drain water storage portion 26h (that is, the casing long side of the drain water receiving portions 26e, 26f). Since the distance to the other end side (for example, the side plate 25 side) in the direction is shortened, the height dimension of the drain pan 2b necessary for providing a gradient in the drain water receiving portions 26e and 26f can be reduced. It becomes like this.

  Moreover, since the heat exchanger 5 is arranged so that the upper part is inclined to the side farther than the lower part with respect to the blower fans 3a and 3b, a large space is provided almost directly above the drain water receiving part 26e as a groove part. As a result, the drain pipe 75 can be reliably disposed almost directly above the drain water receiving portion 26e.

(4) Modification 2
In the above-described embodiment, as shown in FIG. 3, in the plan view of the casing 2, the heat exchangers 5 a and 5 b extend straight from the position near the side plate 23 to the position near the side plate 25, and this corresponds to this. As shown, the drain water receiving portions 26e and 26f of the drain pan 2b also extend straight from the vicinity of the side plate 23 to the vicinity of the side plate 25, and the drain water receiving portions 26e and 26f communicate with the drain water storage portion 26h. The drain water receiving portion 26g is formed so as to extend in the casing short side direction. However, as shown in FIG. 9, a portion along one of the two long sides of the heat exchanger 5 in a plan view of the casing 2 ( Here, in the heat exchanger 5b), the heat exchange central portion 55b, which is a substantially central portion in the casing long side direction, is the other long side of the casing 2 (that is, the casing short side). The drain water receiving portions 26e and 26f (here, the drain water receiving portion 26f) of the drain pan 2b are substantially centered in the casing long side direction so as to protrude toward the direction side plate 22 side). This part may be shaped so as to protrude toward the casing short side plate 22 side. Further, as shown in FIG. 10, not only the heat exchanger 5b and the drain water receiving portion 26f, but also the heat exchanger 5a and the drain water receiving portion 26e are substantially at the center in the casing long side direction of the heat exchanger 5a. The heat exchange central portion 55a, which is a portion, is shaped so as to protrude toward the casing short side direction side plate 24, so that the drain water receiving portion 26e of the drain pan 2b is substantially at the center in the casing long side direction so as to correspond to this. This portion may be shaped so as to protrude toward the casing short side plate 24 side. In the present modification, the heat exchange center portions 55a and 55b are portions facing the space between the casing long sides of the blower fan 3a and the blower fan 3b, and can be said to protrude toward this space. .

  Thereby, the drain water receiving part 26g of the drain pan 2b can be omitted, and the drain water receiving parts 26e, 26f and the drain water storage part 26h can be directly connected at a position substantially in the center in the casing long side direction. In addition, the heat transfer central portion 55b protrudes toward the short-side direction side plate 22 of the casing 2 or the heat-exchange center portion 55a protrudes toward the short-side direction side plate 24 of the casing 2 to thereby transfer heat of the heat exchanger 5. Since the area can be increased, the heat exchange capability can be improved, and the size of the casing 2 in the long side direction can be reduced. When the size of the casing 2 in the longitudinal direction is to be reduced, the portion of the drain water receiving portions 26e, 26f that is farthest from the drain water storage portion 26h (that is, the casing long side of the drain water receiving portions 26e, 26f). Since the distance to the other end side (for example, the side plate 25 side) in the direction is shortened, the height dimension of the drain pan 2b necessary for providing a gradient in the drain water receiving portions 26e and 26f can be reduced. It becomes like this.

  Further, as shown in FIG. 9 and FIG. 10, the heat exchanger central portions 55a and 55b of the heat exchangers 5a and 5b are not only projected in the casing short side direction, but also as shown in FIG. A heat exchange end portion 56a which is an end portion on the casing long side direction side plate 23 side of 5a and a heat exchange end portion 57a which is an end portion on the casing long side direction side plate 25 side protrude toward the casing short side direction side plate 24 side. The heat exchange end portion 56b which is the end portion on the casing long side direction side plate 23 side of the heat exchanger 5b and the heat exchange end portion 57b which is the end portion on the casing long side direction side plate 25 side of the heat exchanger 5b You may make it the shape which protrudes toward the direction side board 22 side. Thereby, since the heat transfer area of the heat exchanger 5 can be further increased, the heat exchange capability can be improved, or the size of the casing 2 in the long side direction can be reduced. When the size of the casing 2 in the longitudinal direction is to be reduced, the portion of the drain water receiving portions 26e, 26f that is farthest from the drain water storage portion 26h (that is, the casing long side of the drain water receiving portions 26e, 26f). Since the distance to the other end side (for example, the side plate 25 side) in the direction is shortened, the height dimension of the drain pan 2b necessary for providing a gradient in the drain water receiving portions 26e and 26f can be reduced. It becomes like this.

  Further, as shown in FIGS. 9, 10 and 11, when the heat exchange center portions 55a and 55b of the heat exchangers 5a and 5b are projected in the casing short side direction, the heat of the heat exchangers 5a and 5b is obtained. Since a space is formed on the anti-blower fan 3 side of the intersection center portions 55a and 55b, in order to make effective use of this space, for example, as shown in FIG. 12, the drain water receiving portion 26e substantially in the casing long side direction. The central portion and the substantially central portion in the casing long side direction of the drain water receiving portion 26f are connected via the drain water receiving portion 26g, and the drain water receiving portions 26e and 26f (here, the drain water receiving portion 26e) are connected. A drain water storage portion 26h is formed on the side of the anti-blower fan 3, and connected to drain water receiving portions 26e and 26f (here, drain water receiving portion 26e), and a drain pump 7 is arranged in the drain water storage portion 26h. It may be.

[Other Embodiments]
As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not restricted to these embodiment, It can change in the range which does not deviate from the summary of invention.

  For example, in the above-described embodiment and its modification, the example in which the present invention is applied to the air conditioner installed in the ceiling-embedded type has been described. However, the air conditioner installed in the ceiling-suspended type The present invention may be applied to.

  If this invention is utilized, it will be arrange | positioned between the short-side direction of the heat exchanger arrange | positioned in a casing and the heat exchanger arrange | positioned in a casing so that a planar view may be along the two long-side directions of a casing in planar view. In the ceiling-mounted air conditioner equipped with the air blower fan, the height of the drain pan can be reduced to make it thinner.

1 is an external perspective view of a ceiling-mounted air conditioner according to an embodiment of the present invention. It is a schematic sectional drawing of an air conditioning apparatus, Comprising: It is a figure corresponded in the AA cross section of FIG. It is the schematic plan view which looked at the air harmony device of the state where the top plate was removed from the upper part. It is a schematic sectional drawing of an air conditioning apparatus, Comprising: It is a figure corresponded in the BB cross section of FIG. It is a schematic sectional drawing of an air conditioning apparatus, Comprising: It is a figure equivalent to CC cross section of FIG. It is a schematic sectional drawing of an air conditioning apparatus, Comprising: It is a figure corresponded in the DD cross section of FIG. It is a schematic sectional drawing of the air conditioning apparatus concerning the modification 1, Comprising: It is a figure corresponded in FIG. It is the schematic plan view which looked at the air conditioning apparatus of the state which removed the top plate concerning the modification 1 from upper direction. It is the schematic plan view which looked at the air conditioning apparatus of the state which removed the top plate concerning the modification 2 from upper direction. It is the schematic plan view which looked at the air conditioning apparatus of the state which removed the top plate concerning the modification 2 from upper direction. It is the schematic plan view which looked at the air conditioning apparatus of the state which removed the top plate concerning the modification 2 from upper direction. It is the schematic plan view which looked at the air conditioning apparatus of the state which removed the top plate concerning the modification 2 from upper direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 2 Casing 3 Blower fan 5 Heat exchanger 7 Drain pump 26e, 26f, 26g Drain water receiving part (groove part)
26h Drain water reservoir (groove)
55a, 55b Heat exchange center part 56a, 56b, 57a, 57b Heat exchange end part 75 Drain pipe

Claims (11)

A casing (2) having a substantially rectangular shape in plan view;
A heat exchanger (5) disposed in the casing along the two long sides of the casing in a plan view of the casing;
In the plan view of the casing , two blower fans (3) arranged between the casing short sides of the heat exchanger and in the casing long sides, and
A groove (26e, 26f, 26g, 26h) for receiving drain water generated by condensation of moisture in the air in the heat exchanger is a portion (5a) along two long sides of the casing of the heat exchanger. 5b) a drain pan (2b) formed so as to connect the lower part and both parts at the approximate center of the casing long side direction ;
A drain pump (7) for draining drain water received in the groove portion out of the casing;
The lowermost part (26h) of the groove part and the drain pump are, in a plan view of the casing, a substantially central part in the casing long side direction and a part along one of the two long sides of the casing of the heat exchanger ( 5a, 5b) and a portion (5b, 5a) along the other long side of the casing ,
Ceiling-mounted air conditioner (1).   The drain pipe (75) for sending drain water discharged from the drain pump to a drain drain pipe (74) installed outside the casing is connected to the drain pump (7). The ceiling-mounted air conditioner (1) described in 1.   The ceiling-mounted air conditioner (1) according to claim 2, wherein the drain pipe (75) is disposed between the blower fan (3) and the heat exchanger (5).   The ceiling-mounted air conditioner (1) according to claim 3, wherein the drain pipe (75) is disposed at a position substantially immediately above the groove (26e, 26f, 26g, 26h).   The ceiling-mounted air conditioner (1) according to claim 3 or 4, wherein the drain pipe (75) is made of copper. In the plan view of the casing (2), the center of heat exchange, which is a substantially central portion in the casing long side direction, of the portions (5a, 5b) along one of the two long sides of the casing of the heat exchanger (5) parts (55a, 55b) protrudes toward the other long side of the casing, ceiling-mounted air conditioning apparatus according to any one of claims 1 to 5 (1). A casing (2) having a substantially rectangular shape in plan view;
A heat exchanger (5) disposed in the casing along the two long sides of the casing in a plan view of the casing;
In the plan view of the casing , two blower fans (3) arranged between the casing short sides of the heat exchanger and in the casing long sides, and
A groove (26e, 26f, 26g, 26h) for receiving drain water generated by condensation of moisture in the air in the heat exchanger is a portion (5a) along two long sides of the casing of the heat exchanger. 5b) a drain pan (2b) formed so as to connect the lower part and both parts at the approximate center of the casing long side direction ;
A drain pump (7) for draining drain water received in the groove portion out of the casing;
In a plan view of the casing, the heat exchanger central portion (55a, 55b) which is a substantially central portion in the casing long side direction among the portions (5a, 5b) along one of the two long sides of the casing of the heat exchanger. Protrudes toward the other long side of the casing,
The lowermost part (26h) of the groove part and the drain pump are substantially at the center of the casing in the long side direction in the plan view of the casing and project the center part of the heat exchange, so that the anti-air blowing of the center part of the heat exchange Arranged in the space formed on the fan side ,
Ceiling-mounted air conditioner (1). Wherein the drain pump (7), drain pipe for feeding drain water the drain pump to discharge drain to the drainage pipe (74) installed on the outside of the casing (75) is connected, according to claim 7 The ceiling-mounted air conditioner (1) described in 1. The ceiling-mounted air conditioner (1) according to any one of claims 2 to 6, wherein the drain pipe (75) is disposed so as to have a downward slope toward the drain drain pipe (74). ). The heat exchanger (5) is connected to refrigerant pipes (53, 54) for exchanging refrigerant with the refrigerant communication pipes (51, 52) installed outside the casing (2). And
The drain pipe (75) is disposed so as to penetrate the casing from the vicinity of the position where the refrigerant pipe penetrates the casing.
The ceiling-mounted air conditioner (1) according to any one of claims 2 to 6, 8, and 9 . In a plan view of the casing (2), a heat exchange end portion that is an end portion in the casing long side direction of the portion (5a, 5b) along one of the two long sides of the casing of the heat exchanger (5). The ceiling-mounted air conditioner (1) according to any one of claims 6 to 10 , wherein (56a, 56b, 57a, 57b) extends toward the other long side of the casing.

Images