JP2020003176A - Outdoor air conditioner - Google Patents

Abstract

To enhance maintainability while providing a heat source side communication pipe communicating between a heat source side heat exchanger and a compressor, and a utilization side communication pipe communicating between a utilization side heat exchanger and the compressor.SOLUTION: An outdoor air conditioner comprises a casing housing a heat source side heat exchanger and a utilization side heat exchanger 3 therein, and having a polygonal contour having a plurality of corners 25a to 25d in a plan view. Both a portion of the heat source side heat exchanger to which a heat source side gas side communication pipe 51 is connected and portions 33 to 37 of the utilization side heat exchanger 3 to which a utilization side gas side communication pipe 53 is connected are arranged at a position closer to the corner 25d (one of the plurality of corners 25a to 25d that the contour of the casing has in a plan view) than the center of the polygon which is the contour of the casing in a plan view.SELECTED DRAWING: Figure 6

Description

  The present disclosure relates to an outdoor air conditioner.

  DESCRIPTION OF RELATED ART Conventionally, as described in patent document 1 (Japanese Unexamined Patent Application Publication No. 2002-228186), for example, an integrated air conditioner that can be installed in a corner of a room has been proposed.

  The outer shape of the air conditioner body in Patent Literature 1 has an outer diameter that can be installed at a corner of a room, but the internal structure has not been studied at all.

  An object of the present disclosure is to provide a heat source side communication pipe for connecting a heat source side heat exchanger and a compressor and a use side communication pipe for connecting a use side heat exchanger and a compressor, and to improve the maintainability of an outdoor. An object of the present invention is to provide an air conditioner.

  The outdoor air conditioner according to the first aspect includes a compressor, a heat source side heat exchanger, a first fan, a use side heat exchanger, a second fan, a heat source side communication pipe, and a use side communication pipe. , A casing. The first fan generates an airflow passing through the heat source side heat exchanger. The second fan generates an airflow passing through the use side heat exchanger. The heat source side communication pipe communicates the heat source side heat exchanger and the compressor. The use side communication pipe communicates the use side heat exchanger and the compressor. The casing houses at least the heat source side heat exchanger and the use side heat exchanger. The casing has a polygonal outline having a plurality of corners in plan view. One of the plurality of corners of the contour shape of the casing in plan view is a first corner. Both the heat source side pipe connection part to which the heat source side communication pipe of the heat source side heat exchanger is connected, and the use side pipe connection part to which the use side communication pipe of the use side heat exchanger is connected, In plan view, it is arranged at a position closer to the first corner than the center of the polygon which is the contour of the casing.

  Here, it is preferable that the casing houses at least the heat source side heat exchanger, the use side heat exchanger, and the compressor, and has a support, a bottom plate, and a top plate.

  In this outdoor air conditioner, the heat source side connection pipe to which the heat source side communication pipe of the heat source side heat exchanger is connected, and the use side pipe connection to which the use side communication pipe of the use side heat exchanger is connected Since both of the parts are arranged at positions near the same first corner, it is possible to enhance maintainability.

  The outdoor air-conditioning apparatus according to the second aspect is the outdoor air-conditioning apparatus according to the first aspect, wherein both the heat-source-side pipe connection part and the use-side pipe connection part form a first corner in plan view. The first side is located closer to the first corner than the line connecting the centers of the two sides.

  In this outdoor air conditioner, both the heat source side pipe connection and the use side pipe connection can be collectively located near the first corner in plan view.

  An outdoor air-conditioning apparatus according to a third aspect is the outdoor air-conditioning apparatus according to the first aspect or the second aspect, wherein the heat-source-side pipe connection includes a heat-source-side tube sheet provided in the heat-source-side heat exchanger. . The use side pipe connection includes a use side tube sheet provided in the use side heat exchanger.

  In this outdoor air conditioner, the heat source side tube sheet and the use side tube sheet are arranged at a position closer to the first corner than the center of the polygon which is the contour of the casing in plan view, so that the heat source side in plan view is provided. The position of the tube sheet and the use side tube sheet can be put together near the same first corner.

  An outdoor air conditioner according to a fourth aspect is the outdoor air conditioner according to any of the first to third aspects, wherein the heat source side communication pipe and the use side communication pipe extend along the first corner. ing.

  Here, "the heat source side connecting pipe and the use side connecting pipe extend along the first corner" means that the entire heat source side connecting pipe and the entire use side connecting pipe extend along the first corner. Not only the case where it extends but also the case where at least a part of the heat source side communication pipe and a part of the use side communication pipe extend along the first corner portion.

  In this outdoor air conditioner, the maintainability of the heat source side communication pipe and the use side communication pipe can be improved.

  An outdoor air-conditioning apparatus according to a fifth aspect is the outdoor air-conditioning apparatus according to any of the first to fourth aspects, wherein the casing has a quadrangular contour in plan view. In addition, as this quadrangle, a polygon constituted by main sides of the contour shape in plan view may be a quadrangle, or a quadrangle in which each vertex is chamfered.

  An outdoor air conditioner according to a sixth aspect is the outdoor air conditioner according to any of the first to fifth aspects, wherein the heat source side heat exchanger and the use side heat exchanger are formed of a casing in plan view. It has a portion extending along two or more adjacent sides of each side constituting the polygonal outline shape.

  In this outdoor air conditioner, it is easy to secure a long effective length of the heat source side heat exchanger and the use side heat exchanger. Here, the effective length refers to a length from one end to the other end along the shape of the heat exchanger in plan view.

  An outdoor air-conditioning apparatus according to a seventh aspect is the outdoor air-conditioning apparatus according to any of the first to sixth aspects, wherein the heat-source-side heat exchanger has an L-shape in plan view having a heat-source-side bent portion. It has two heat source side heat exchange units. The plurality of heat-source-side heat exchange units are arranged such that the insides of the respective heat-source-side bent portions face each other in plan view. The use-side heat exchanger includes two use-side heat exchange portions having an L-shape in plan view having use-side bent portions. The plurality of use-side heat exchange units are arranged such that the insides of the respective use-side bent portions face each other in plan view. Both the heat-source-side pipe connection portion of each of the plurality of heat-source-side heat exchange portions and the use-side pipe connection portion of each of the plurality of use-side heat exchange portions are located in plan view from the center of the polygon which is the contour shape of the casing. Are also located near the first corner.

  In this outdoor air conditioner, even when the heat source side heat exchanger and the use side heat exchanger have a plurality of heat exchange units, each heat source side piping is utilized by utilizing the space of the first corner. A connection part and each utilization side pipe connection part can be arranged.

  An outdoor air conditioner according to an eighth aspect is the outdoor air conditioner according to any of the first to seventh aspects, wherein the heat source side heat exchanger and the use side heat exchanger are arranged apart from each other. ing.

  In this outdoor air conditioner, the influence of heat between the heat source side heat exchanger and the use side heat exchanger can be suppressed.

  The outdoor air conditioner according to a ninth aspect is the outdoor air conditioner according to the eighth aspect, wherein the second fan is inside the casing and between the heat source side heat exchanger and the use side heat exchanger. Is housed in

The figure which shows the refrigerant circuit of the outdoor air conditioner 100. FIG. 2 is an external perspective view of the outdoor air conditioner 100. FIG. 2 is a perspective view showing an internal configuration of the outdoor air conditioner 100. FIG. 1 is a side view schematic layout configuration diagram illustrating an internal configuration of an outdoor air conditioner 100. FIG. 3 is a schematic plan view showing an arrangement relationship of each element on a bottom plate 12. FIG. 3 is a schematic plan view showing an arrangement relationship of each element on a first partition plate 17. FIG. 4 is a schematic plan view showing an arrangement relationship of each element on a second partition plate 16. FIG. 4 is a schematic plan view showing an arrangement relationship of each element on a third partition plate 15. FIG. 6 is a schematic plan view showing the arrangement relationship of each element on a fourth partition plate 14.

(1) Configuration of Refrigerant Circuit of Outdoor Air Conditioner 100 FIG. 1 shows a refrigerant circuit of the outdoor air conditioner 100 of the present embodiment, and FIG. The outdoor air conditioner 100 of the present embodiment is an air conditioner that is arranged outdoors and performs outdoor heating, cooling, dehumidification, and the like using a heat pump. Here, the outdoor means a space exposed to the outside air. For example, there may be a place without a roof, such as a park or an outdoor stadium, or an outdoor space with a roof, an arbor, or a place like a veranda.

  The outdoor air conditioner 100 may be a cooling-only machine that performs a cooling operation and / or a dehumidifying operation. The outdoor air-conditioning apparatus 100 may be a heating-only machine that performs only the heating operation or the heating operation and the defrosting operation. The outdoor air-conditioning apparatus 100 may be an air-conditioning apparatus that performs at least one of a cooling operation and a dehumidifying operation and performs only a heating operation or both a heating operation and a defrost operation.

  The outdoor air-conditioning apparatus 100 is an air-conditioning apparatus in which the entire refrigerant circuit 9 illustrated in FIG. As shown in FIG. 1, the outdoor air conditioner 100 includes a compressor 1, an accumulator 8, a four-way switching valve 2, a use side heat exchanger 3, an expansion unit 5, and a heat source side heat exchanger 6. These devices constitute the refrigerant circuit 9 by being connected by piping.

  More specifically, the accumulator 8 is connected between the first connection port of the four-way switching valve 2 and the suction side of the compressor 1. The discharge side of the compressor 1 is connected to a second connection port of the four-way switching valve 2. The third connection port of the four-way switching valve 2 is connected to the gas refrigerant side of the heat source side heat exchanger 6 via the heat source side gas side communication pipe 51, and the fourth connection port of the four way switching valve 2 is It is connected to the gas refrigerant side of the use side heat exchanger 3 via the use side gas side communication pipe 53. The expansion means 5 is connected to the liquid refrigerant side of the heat source side heat exchanger 6 via the heat source side liquid side communication pipe 52, and is connected to the liquid refrigerant of the usage side heat exchanger 3 via the usage side liquid side communication pipe 54. Connected to the side. Note that, for example, as a configuration without the four-way switching valve 2 in the cooling only machine, the heat source side gas side communication pipe 51 communicates the discharge side of the compressor 1 with the gas refrigerant side of the heat source side heat exchanger 6, The use side gas side communication pipe 53 may communicate the suction side of the compressor 1 and the gas refrigerant side of the use side heat exchanger 3.

  In addition, the refrigerant circuit 9 including the four-way switching valve 2 is a heating-only machine that performs a heating operation and a defrosting operation, or at least one of a cooling operation and a dehumidifying operation, and only a heating operation or a heating operation and a defrosting operation. Both are employed in air conditioners that do. Further, in a cooling only machine that performs a cooling operation and / or a dehumidifying operation, a refrigerant circuit in which the four-way switching valve 2 is omitted can be used. Specifically, a refrigerant circuit in which the discharge side of the compressor 1 is connected to the heat source side heat exchanger 6 and the suction side of the compressor 1 is connected to the use side heat exchanger 3 (via the accumulator 8 as necessary) Can be used.

  In the outdoor air conditioner 100 described above, the refrigerant sealed in the refrigerant circuit 9 circulates through each device, so that a vapor compression refrigeration cycle is performed. Here, in the case of the cooling operation, the dehumidification operation and the defrost operation, the use side heat exchanger 3 functions as a refrigerant evaporator, and the heat source side heat exchanger 6 functions as a refrigerant condenser. In the case of the heating operation, the use side heat exchanger functions as a refrigerant condenser, and the heat source side heat exchanger functions as a refrigerant evaporator. Switching between the cooling operation, the dehumidifying operation, the defrost operation, and the heating operation is performed by switching the switching state of the four-way switching valve 2 in the refrigerant circuit 9.

  As the refrigerant used in the outdoor air conditioner 100, for example, R32 alone, a mixed refrigerant containing R32, and the like can be given. Examples of the mixed refrigerant containing R32 include R452B, R410A, and R454B. In R452B, R32 is 67.0 wt%, R125 is 7.0 wt%, and R1234yf is 26.0%. In R410A, R32 is 50 wt% and R125 is 50 wt%. R454B has R2.5 of 72.5 wt% and R1234yf of 27.5 wt%.

(2) Arrangement of each device of outdoor air conditioner 100 FIG. 2 is a perspective view of the exterior of outdoor air conditioner 100, and FIG. 3 is a perspective view of the internal configuration of the outdoor air conditioner 100 with some decorative plates, columns, etc. removed. FIG. 4 shows a schematic arrangement configuration diagram in a side view.

  In the outdoor air-conditioning apparatus 100 according to the present embodiment, the casing 10 accommodates all devices constituting the refrigerant circuit 9, the heat source-side fan 7, and the use-side fan 4.

  The casing 10 has a rectangular parallelepiped shape having a substantially rectangular horizontal cross section, and extends vertically so that the longitudinal direction is the vertical direction. The top view of the casing 10 has a shape having symmetry. In the present embodiment, the shape of the casing 10 in plan view mainly includes the four side surfaces 20a to 20d and the four corner portions 25a formed of the portions between the adjacent ones of the side surfaces 20a to 20d. To 25d. The outline of the shape of the casing 10 in plan view may be a polygon such as a triangle, a quadrangle, a pentagon, a hexagon, a heptagon, or an octagon, and all the sides constituting the polygon in a plan view are all straight lines. It is not limited to a target, and may have a curved portion.

  The corners 25a to 25d are not particularly limited, but can be determined as follows, for example. First, the average length of each remaining line is obtained by excluding the curved portion and the inwardly depressed portion from among the lines constituting the contour shape of the casing 10 in plan view. Further, from among the lines constituting the contour shape of the casing 10 in plan view, the remaining lines excluding the curved portion and the inwardly depressed portion, the remaining lines excluding the lines shorter than the average length, Identify as the main contour. In a plan view, each intersection obtained by extending each of these main contour lines is determined. Then, in a plan view, a point where the line connecting the center (center of gravity) of the contour shape of the casing and the intersection and the contour of the casing intersect can be defined as a corner. In the present embodiment, each of the corners 25a to 25d can be the center of a portion exposed to the outside of each of the columns 11a to 11d in a plan view.

  The casing 10 includes four columns 11a to 11d, a top plate 13, a bottom plate 12, a fourth partition plate 14, a third partition plate 15, a second partition plate 16, a first partition plate 17, four upper decorative plates 21, It has four intermediate decorative panels 22, four lower decorative panels 23, four wind direction adjusting members 24, and the like.

  The outer shape of the casing 10 generally includes four pillars 11a to 11d, a top plate 13, a bottom plate 12, four upper decorative plates 21, four intermediate decorative plates 22, four lower decorative plates 23, And four wind direction adjusting members 24, and has a structure extending vertically so that the longitudinal direction is a vertical direction. The four pillars 11a to 11d are located at four corners of the top plate 13 and the bottom plate 12 in a top view, and constitute four corner portions 25a to 25d of the casing 10 in a plan view. Each of these four columns 11a to 11d is provided in a posture in which the longitudinal direction is a vertical direction. The top plate 13 is a plate member fixed near the upper ends of the four columns 11a to 11d and extending horizontally. The bottom plate 12 is a plate member fixed near the lower ends of the four columns 11a to 11d and extending horizontally. In addition, the upper decorative board 21, the wind direction adjusting member 24, the intermediate decorative board 22, and the lower decorative board 23 are arranged between the columns 11a to 11d, which are adjacent to each other, in order from the top on all four sides. . The upper decorative panel 21 and the lower decorative panel 23 have a shape in which a plurality of protrusions protruding toward the side and arranged in a horizontal direction extend in the up-down direction. A portion facing the air inlet 45 and the heat source side suction port 47 has a portion opened so that air can be sent in the circumferential direction. The intermediate decorative plate 22 covers the lower decorative plate 23 in the circumferential direction, and has no opening or the like through which air passes. The wind direction adjusting member 24 is capable of adjusting the supply destination of the airflow passing through the portion above the intermediate decorative plate 22 and below the upper decorative plate 21 so that the portion can be closed. Is provided.

  In addition, four casters 18 are attached under the bottom plate 12 for moving the outdoor air conditioner 100 to change the installation location. Further, to the bottom plate 12, two fixed plates 19a and 19b having a main surface extending parallel to the ground are fixed. The outdoor air-conditioning apparatus 100 is prevented from falling by these fixing plates 19a and 19b. The fixing plates 19a and 19b are fixed to the bottom plate 12 by screws and can be removed.

  The inside of the casing 10 includes a fourth partition plate 14, a third partition plate 15, a second partition plate 16, and a first partition plate 17 in order from the top so as to partition the inside of the casing 10 into a plurality of spaces arranged vertically. Are located. Each of the fourth partition plate 14, the third partition plate 15, the second partition plate 16, and the first partition plate 17 is fixed inside the four columns 11a to 11d, so that the structure of the casing 10 is improved. It also contributes to reinforcement. In order to secure a plurality of spaces vertically arranged inside the casing 10, the fourth partition plate 14, the third partition plate 15, and the Since the two partition plates 16 and the first partition plate 17 are used, it is possible to suppress an increase in the size of the outdoor air-conditioning apparatus 100 in the vertical direction.

  As shown in FIG. 5, a space vertically surrounded by the bottom plate 12 and the first partition plate 17 in the interior of the casing 10 includes the compressor 1, the expansion means 5, the accumulator 8, the electrical components 28, and the drain A tank 29 is arranged. Here, the compressor 1 may be a variable capacity machine (inverter machine) or a fixed capacity machine (non-inverter machine) driven at a constant speed. The expansion means 5 is not particularly limited, and may be an electric expansion valve whose valve opening can be controlled, may be a mechanical expansion valve used together with a temperature-sensitive cylinder, or may be a capillary tube. Good. The electrical component 28 functions as a control unit that performs drive control of each element of the outdoor air conditioner 100, and includes a CPU, a ROM, a RAM, and the like. The electrical component 28 includes the compressor 1, the use side fan motor 4a, and the heat source side fan motor 7a (when the expansion means 5 is a controllable electric expansion valve or the like, the electric expansion valve, the four-way switching valve 2 is provided via the communication line 71 to the four-way switching valve 2 and to the wind direction adjusting member 24 if the attitude of the wind direction adjusting member 24 is controllable. The drain tank 29 captures and stores dew water generated in the use side heat exchanger 3 functioning as an evaporator. The drain tank 29 has a substantially rectangular parallelepiped shape, and the vertical height of the drain tank 29 is preferably equal to or more than half the length in the longitudinal direction of the drain tank 29 in plan view. It is more preferable that the length is not less than the length in the direction. Here, the four side surfaces between the bottom plate 12 and the first partition plate 17 are such that the portions between the two columns 11a to 11d adjacent to each other do not allow air to pass through the corresponding lower decorative plate 23. Covered by parts.

  From the four-way switching valve 2, a heat source side gas side communication pipe 51 and a use side gas side communication pipe 53 extend toward the corner 25d in plan view. Further, from the expansion means 5, a heat source side liquid side communication pipe 52 and a use side liquid side communication pipe 54 extend toward the corner 25d side in plan view. As will be described later, the vertically extending portions of the heat source side gas side communication pipe 51 and the heat source side liquid side communication pipe 52 and the heat source side tube plate 63 which is a connection point between these and the heat source side heat exchanger 6. The vertically extending portions of the usage-side gas-side communication pipe 53 and the usage-side liquid-side communication pipe 54, and the usage-side tube sheet 33 and the like, which are connection points between these and the usage-side heat exchanger 3, In any case, the casing 10 is arranged at a position closer to the corner 25d than the center (center of gravity) in plan view. Further, a portion extending in the vertical direction of the heat source side gas side communication pipe 51 and the heat source side liquid side communication pipe 52, and a part extending in the vertical direction of the use side gas side communication pipe 53 and the use side liquid side communication pipe 54. Each of them extends vertically along the corner 25d. It should be noted that not the entirety of the heat source side gas side communication pipe 51 and the whole heat source side liquid side communication pipe 52, but at least the heat source side tube plate 63 which is the heat source side pipe connection part of the heat source side heat exchanger 6 and the If the portions connected to the first heat source side gas branch pipe 64, the second heat source side gas branch pipe 65, the first heat source side liquid branch pipe 66, and the second heat source side liquid branch pipe 67 extend along the corner 25d. Good. Similarly, not the entire use-side gas-side communication pipe 53 and the entire use-side liquid-side communication pipe 54, but at least the use-side tube sheet that is the use-side pipe connection part of the use-side heat exchanger 3. A portion connected to the first use side gas branch pipe 33, the second use side gas branch pipe 35, the first use side liquid branch pipe 36, and the second use side liquid branch pipe 37 extends along the corner 25d. It should just be.

In the space inside the casing 10 which is vertically surrounded by the first partition plate 17 and the second partition plate 16, the use side heat exchanger 3 is arranged as shown in FIG.
The first partition plate 17 has a notch 17a penetrating in the vertical direction in the vicinity of the corner 25d. By forming the notch 17a, the communication line 71 and the heat source side gas side communication pipe 51, the use side gas side communication pipe 53, the heat source side liquid side communication pipe 52 which is a part of the refrigerant circuit 9, and The use-side liquid-side communication pipe 54 may be extended further upward through a region surrounded by the use-side tube plate 33 and the support 11d provided so that the vicinity of the edge of the notch 17a extends in the vertical direction. It is possible. The use-side gas-side communication pipe 53 and the use-side liquid-side communication pipe 54 extend upward to a height between the first partition plate 17 and the second partition plate 16, and are connected to the heat source-side gas connection pipe. The communication line 71 extending from the heat source side liquid side communication pipe 52 and the electrical component 28 extends further upward. The use side heat exchanger 3 is an air heat exchanger that performs heat exchange between a refrigerant flowing inside and air passing outside. The use-side heat exchanger 3 is constituted by two heat exchange units (a first use-side heat exchange unit 31 and a second use-side heat exchange unit 32) having a substantially L-shape in a top view. , 32 are arranged such that the insides of the L-shaped corners face each other. Each of the heat exchange units 31 and 32 of the use-side heat exchanger 3 is configured to have a plurality of heat transfer tubes extending in the horizontal direction and a plurality of heat transfer fins penetrated by the heat transfer tubes. I have. The heat exchange portions 31 and 32 of the use side heat exchanger 3 are integrated via a common use side tube sheet 33 at the end on the support 11d side. The use side tube sheet 33 is provided so as to extend in the vertical direction along the edge of the notch 17 a of the first partition plate 17. Each of the heat exchange sections 31 and 32 of the use-side heat exchanger 3 has two heat exchange surfaces that are perpendicular to each other and are oriented in the circumferential direction. Here, the two heat exchange surfaces of the first usage-side heat exchange unit 31 are provided along side surfaces 20a and 20b adjacent to each other. The two heat exchange surfaces of the second usage-side heat exchange section 32 are provided along side surfaces 20c and 20d adjacent to each other. The refrigerant supplied to the use-side heat exchanger 3 is diverted toward the two heat exchange units 31 and 32, and after flowing in the heat exchange units 31 and 32 so that the refrigerant is turned back, the refrigerant is merged and used. It flows outside the heat exchanger 3.

  Specifically, the first use side heat exchange section 31 has a first use side gas branch pipe 34 connecting the use side tube plate 33 and the use side gas side communication pipe 53 at the gas side portion, In the portion, there is a first usage-side liquid branch pipe 36 that connects the usage-side tube sheet 33 and the usage-side liquid-side communication pipe 54. In addition, the second usage-side heat exchange unit 32 has a second usage-side gas branch pipe 35 that connects the usage-side tube sheet 33 and the usage-side gas-side communication pipe 53 in the gas-side part, A second use-side liquid branch pipe 37 that connects the use-side tube sheet 33 and the use-side liquid-side communication pipe 54 is provided. Thus, when the use-side heat exchanger 3 functions as an evaporator for the refrigerant, the liquid refrigerant flowing through the use-side liquid-side communication pipe 54 is supplied to the first use-side liquid branch pipe 36 via the first use-side liquid branch pipe 36. Each of the first usage-side heat exchange units 31 and 31 is branched into a refrigerant flowing toward the heat exchange unit 31 and a refrigerant flowing toward the second usage-side heat exchange unit 32 via the second usage-side liquid branch pipe 37. The refrigerant flowing from the first usage-side heat exchange unit 31 through the first usage-side gas branch pipe 34 after being evaporated in the second usage-side heat exchange unit 32 and the second usage-side gas from the second usage-side heat exchange unit 32 The refrigerant flowing through the branch pipe 35 joins and flows in the use-side gas-side communication pipe 53. When the use-side heat exchanger 3 functions as a refrigerant condenser, the flow of the refrigerant is reversed.

  The use side tube plate 33, the first use side gas branch tube 34, the second use side gas branch tube 35, the first use side liquid branch tube 36, and the second use side liquid branch tube 37 are all The first partition plate 17 is gathered at a position closer to the corner 25d than the center (center of gravity) 17c in plan view. In particular, the use side tube sheet 33, the first use side gas branch pipe 34, the second use side gas branch pipe 35, the first use side liquid branch pipe 36, and the second use side liquid branch pipe 37 are all corner portions. With respect to the side surface 20a and the side surface 20d constituting both sides of the casing 10 with respect to 25d, they are gathered further on the corner 25d side than the reference line 17x connecting the centers of the side surfaces 20a and 20d in plan view. For example, when the use-side heat exchanger 3 has a use-side header (not shown), it is preferable that the use-side header is also arranged at a position close to the corner 25d.

The above-mentioned use side heat exchanger 3 is mounted on the first partition plate 17. Here, as for the four side surfaces at the height position between the first partition plate 17 and the second partition plate 16, the portion between the two columns 11a to 11d adjacent to each other corresponds to the corresponding lower decorative plate. 23 is covered with a portion including a use side suction port 45 configured to allow air to pass through.
When the use-side heat exchanger 3 functions as a refrigerant evaporator, dew condensation water may be generated in the use-side heat exchanger 3. After being caught by a first partition plate 17 arranged below and configured to function as a drain pan, a drain tank arranged below through an opening (not shown) provided in the first partition plate 17 29. The drain tank 29 can be taken out of the casing 10 by removing a part of the lower decorative plate 23, and can be drained appropriately.

  As shown in FIG. 7, a use-side bell mouth 41, a use-side fan 4, and the like are arranged in a space vertically surrounded by the second partition plate 16 and the third partition plate 15 in the inside of the casing 10. The second partition plate 16 has a notch 16a penetrating vertically in the vicinity of the support 11d. Since the notch 16 a is formed in the second partition plate 16, the communication line 71 and the heat source side gas side communication pipe 51 and the heat source side liquid side communication pipe 52 which are a part of the refrigerant circuit 9 are notched. It is possible to extend further upward through a region surrounded by the partition member 16c and the support 11d provided so that the edge of 16a extends in the vertical direction. The partition member 16c is provided between the second partition plate 16 and the third partition plate 15 so that a portion of the second partition plate 16 along the edge of the notch 16a extends in the vertical direction. As a result, the air blown out from the usage-side fan 4 in the space between the second partition plate 16 and the third partition plate 15 causes the cutout 16a of the second partition plate 16 and the cutting of the third partition plate 15 described later. Flowing toward the notch 15a is prevented. Further, the second partition plate 16 has an upper surface facing upward which is a space side where the use side fan 4 is arranged, a lower surface facing downward which is a space side where the use side heat exchanger 3 is arranged, and a center. And an opening 16b which penetrates substantially vertically in the vicinity. The use-side bell mouth 41 is attached to the opening 16b, and guides air below the use-side bell mouth 41 to above the use-side bell mouth 41. The usage-side fan 4 is disposed above the vicinity of the upper end of the usage-side bell mouth 41 in a posture in which the rotation axis direction is the vertical direction. The use side fan 4 is not particularly limited, but is preferably a centrifugal blower such as a turbo fan. The use-side fan 4 includes an impeller and a use-side fan motor 4a that is disposed above the impeller and that drives the impeller to rotate. The use-side fan motor 4a is disposed inside a use-side fan motor accommodating portion 15b formed so as to protrude upward at the center of the third partition plate 15. Fixed. This allows the casing 100 to be downsized in the vertical direction. The use-side fan motor 4a is a different motor from the heat-source-side fan motor 7a of the heat-source-side fan 7, and can be independently driven and controlled. Here, the lower part (the lower part of the wind direction adjusting member 24) of the four side surfaces at the height position between the second partition plate 16 and the third partition plate 15 is two columns 11a adjacent to each other. The portion between -11d is covered by the corresponding intermediate decorative panel 22. Note that the intermediate decorative plate 22 is configured not to allow air to pass through. Then, the portions above the intermediate decorative plate 22 among the four side surfaces at the height positions between the second partition plate 16 and the third partition plate 15 are two columns 11a to 11d adjacent to each other. The use side outlet 46 is constituted by being surrounded by. Each of the four use-side outlets 46 is provided with a wind direction adjusting member 24, so that the direction of the conditioned air flow blown out from the use-side outlets 46 can be independently changed. . The change of the attitude of the wind direction adjusting member 24 for changing the blowing direction may be performed by control, or may be manually performed by a user. Further, the outdoor air conditioner 100 of the present embodiment is configured such that all the conditioned air blown out from the use-side outlet 46 is air that has passed through the use-side heat exchanger 3.

  As shown in FIG. 8, a heat source-side heat exchanger 6 is arranged in a space vertically surrounded by the third partition plate 15 and the fourth partition plate 14 in the inside of the casing 10. The third partition plate 15 has a notch 15a penetrating in the vertical direction in the vicinity of the support 11d. Due to the formation of the notch 15a, the communication line 71 and the heat-source-side gas-side communication pipe 51 and the heat-source-side liquid-side communication pipe 52, which are parts of the refrigerant circuit 9, are placed near the edge of the notch 15a. Can be extended further upward through a region surrounded by the heat source side tube sheet 63 and the support 11d provided so as to extend in the vertical direction. The communication line 71, the heat source side gas side communication pipe 51, and the heat source side liquid side communication pipe 52 extend upward to a height between the third partition plate 15 and the fourth partition plate 14. The heat source side heat exchanger 6 is an air heat exchanger that performs heat exchange between the refrigerant flowing inside and the air passing outside. The heat source side heat exchanger 6 is constituted by two heat exchange units (a first heat source side heat exchange unit 61 and a second heat source side heat exchange unit 62) that are substantially L-shaped when viewed from above. , 62 are arranged such that the insides of the L-shaped corners face each other. Each of the heat exchange portions 61 and 62 of the heat source side heat exchanger 6 is configured to include a plurality of heat transfer tubes extending in the horizontal direction and a plurality of heat transfer fins penetrated by the heat transfer tubes. The heat exchange portions 61 and 62 of the heat source side heat exchanger 6 are integrated at a corner 25 d side end through a common heat source side tube plate 63. Each of the heat exchange portions 61 and 62 of the heat source side heat exchanger 6 is configured to have two circumferentially oriented heat exchange surfaces that are perpendicular to each other. Here, the two heat exchange surfaces of the first heat source side heat exchange unit 61 are provided along side surfaces 20a and 20b adjacent to each other. The two heat exchange surfaces of the second heat source side heat exchange section 62 are provided along side surfaces 20c and 20d adjacent to each other. The refrigerant supplied to the heat source side heat exchanger 6 is diverted toward the two heat exchange units 61 and 62, and after flowing the refrigerant in each of the heat exchange units 61 and 62 so as to return, the refrigerant is merged and joined. It flows outside the heat exchanger 6.

  Specifically, the first heat source side heat exchange section 61 has a first heat source side gas branch pipe 64 connecting the heat source side tube plate 63 and the heat source side gas side communication pipe 51 in the gas side portion, In the portion, a first heat source side liquid branch pipe 66 that connects the heat source side tube plate 63 and the heat source side liquid side communication pipe 52 is provided. Further, the second heat source side heat exchange part 62 has a second heat source side gas branch pipe 65 connecting the heat source side tube plate 63 and the heat source side gas side communication pipe 51 in the gas side part, and in the liquid side part, A second heat source side liquid branch pipe 67 that connects the heat source side tube plate 63 and the heat source side liquid side communication pipe 52 is provided. Thereby, when the heat source side heat exchanger 6 functions as a refrigerant condenser, the liquid refrigerant flowing through the heat source side gas side communication pipe 51 is supplied to the first heat source side gas branch pipe 64 via the first heat source side gas branch pipe 64. The refrigerant is branched into a refrigerant flowing to the heat exchange unit 61 side and a refrigerant flowing to the second heat source side heat exchange unit 62 side via the second heat source side gas branch pipe 65, and each of the first heat source side heat exchange unit 61 and the After the refrigerant is condensed in the second heat source side heat exchange section 62, the refrigerant flows out of the first heat source side heat exchange section 61 through the first heat source side liquid branch pipe 66 and the second heat source side heat exchange section 62 has a second heat source side liquid branch pipe. The refrigerant flowing out through 67 flows into the heat source side liquid side communication pipe 52 in a combined manner. When the heat source side heat exchanger 6 functions as a refrigerant evaporator, the flow of the refrigerant is reversed.

  The heat source side tube plate 63, the first heat source side gas branch tube 64, the second heat source side gas branch tube 65, the first heat source side liquid branch tube 66, and the second heat source side liquid branch tube 67 are all The third partition plate 15 is gathered at a position closer to the corner 25d than the center (center of gravity) 15c in plan view. In particular, the heat source side tube sheet 63, the first heat source side gas branch pipe 64, the second heat source side gas branch pipe 65, the first heat source side liquid branch pipe 66, and the second heat source side liquid branch pipe 67 are all corner portions. With respect to 25d, they are further gathered on the corner 25d side than a reference line 15x connecting the centers of the side surfaces 20a and 20d constituting both sides of the casing 10 in plan view. In addition, for example, when the heat source side heat exchanger 6 has a heat source side header (not shown), it is preferable that the heat source side header is also arranged at a position close to the corner 25d.

  The above heat source side heat exchanger 6 is fixed by being placed on the third partition plate 15. Here, as for the four side surfaces at the height position between the third partition plate 15 and the fourth partition plate 14, the portion between the two columns 11a-11d adjacent to each other corresponds to the corresponding upper decorative plate. 21 is covered with a portion including a heat source side suction port 47 configured to allow air to pass through. The third partition plate 15 is configured to have a function as a drain pan that receives dew water generated when the heat source side heat exchanger 6 functions as a refrigerant evaporator. The condensed water caught by the third partition plate 15 as a drain pan is disposed below the drain tank via an opening (not shown) provided in the third partition plate 15 and a drainage passage along the columns 11a to 11c. 29.

  As shown in FIG. 9, a heat source side bell mouth 42, a heat source side fan 7, and the like are arranged in a space inside the casing 10 which is vertically surrounded by the fourth partition plate 14 and the top plate 13. In the fourth partition plate 14, an opening 14a is formed in the vicinity of the center so as to penetrate greatly in the vertical direction. The heat-source-side fan 7 is arranged in a posture in which the rotation axis direction is the vertical direction. The heat source side fan 7 is not particularly limited, but is preferably an axial blower such as a propeller fan. The heat-source-side fan 7 has an impeller and a heat-source-side fan motor 7a that is disposed below the impeller and drives the impeller to rotate. The heat source side fan motor 7a is located below the center of the fourth partition plate 14, and is fixed to a fan motor base (not shown) fixed to the fourth partition plate 14. The heat-source-side bell mouth 42 is provided above the heat-source-side fan 7 such that the diameter increases toward the upper side, and guides the air below the heat-source-side bell mouth 42 to above the heat-source-side bell mouth 42. Here, as for the four side surfaces at the height position between the fourth partition plate 14 and the top plate 13, the portion between the two columns 11 a-11 d adjacent to each other is the same as that of the corresponding upper decorative plate 21. It is covered by a part that does not allow air to pass through.

  The top plate 13 is formed with a heat source side outlet 48 that penetrates vertically in the vicinity of the center in plan view. The heat source side outlet 48 has a shape corresponding to the upper end portion of the heat source side bell mouth 42 and is located immediately above the upper end portion of the heat source side bell mouth 42. The upper part of the heat source side outlet 48 is covered with a mesh-shaped fan guard 43.

(3) Configuration of flowing air in outdoor air conditioner 100 and description of air flow (3-1) Flow of air passing through use side heat exchanger 3 Main air flow indicated by arrows 3, the flow of the air passing through the use side heat exchanger 3 will be described.

  When the usage-side fan 4 is driven during operation of the outdoor air-conditioning apparatus 100, the surrounding air below the outdoor air-conditioning apparatus 100 causes each of the usage-side suction ports 45 provided to correspond to the four side surfaces 20a to 20d. Is taken into each heat exchanging section of the use side heat exchanger 3. The air taken into each heat exchanging section of the use side heat exchanger 3 exchanges heat with the refrigerant flowing inside the use side heat exchanger 3 and is conditioned. Then, the conditioned air gathers above the center of the space between the first partition plate 17 and the second partition plate 16 and is directed upward toward the inside of the use-side bell mouth 41, causing the use-side fan 4 to operate. pass. In this way, the conditioned air that has passed through the use-side fan 4 is sent outward in the circumferential direction through each of the use-side outlets 46 provided to correspond to the four side surfaces 20a to 20d. When the conditioned air passes through the use-side outlet 46, the wind direction is adjusted by the wind direction adjusting member 24. Although not particularly limited, the wind direction passing through the use-side outlet 46 may be ± 30 ° in the horizontal direction, and the angle of the wind direction with respect to the horizontal direction is adjusted by the wind direction adjusting member 24 in a wider range. The conditioned air does not pass through the use-side outlet 46 that is closed by the wind direction adjusting member 24.

(3-2) Flow of air passing through heat source side heat exchanger 6 The flow of air passing through heat source side heat exchanger 6 will be described with reference to FIG. 3 in which the main air flow is indicated by arrows. I do.

  When the heat source side fan 7 is driven during the operation of the outdoor air conditioner 100, the ambient air above the outdoor air conditioner 100 causes the heat source side inlets 47 provided to correspond to the four side surfaces 20a to 20d. Is taken into each heat exchange part of the heat source side heat exchanger 6. The air taken into each heat exchange part of the heat source side heat exchanger 6 exchanges heat with the refrigerant flowing inside the heat source side heat exchanger 6. Then, the air after the heat exchange gathers above the center of the space between the third partition plate 15 and the fourth partition plate 14 and is directed upward inside the bell mouth 42 of the heat source side, and the heat source side fan 7 Pass through. In this way, the heat-exchanged air that has passed through the heat-source-side fan 7 is mainly sent vertically upward through the heat-source-side outlet 48 formed in the top plate 13.

(4) Features of the embodiment (4-1)
In the outdoor air-conditioning apparatus 100 of the present embodiment, the contour of the casing 10 that houses the components of the refrigerant circuit 9 in a plan view is a polygon having a plurality of corners 25a to 25d. For this reason, the structural strength can be increased as compared with the cylindrical casing. Further, as compared with a cylindrical casing, it is easier to suppress the overturn.

  The heat source side gas side communication pipe 51, the heat source side liquid side communication pipe 52, and the use side gas are provided near at least one of the corners 25a to 25d (the corner 25d in the present embodiment) of the casing 10. Side connection pipe 53, use side liquid side connection pipe 54, first heat source side gas branch pipe 64, second heat source side gas branch pipe 65, first heat source side liquid branch pipe 66 connected to these connection pipes. , The second heat source side liquid branch pipe 67, the first use side gas branch pipe 34, the second use side gas branch pipe 35, the first use side liquid branch pipe 36, the second use side liquid branch pipe 37, and the heat source side. The tube sheet 63 and the use side tube sheet 33 are arranged together. For this reason, when performing maintenance of any of these components, it is easy to perform maintenance of other components that are collectively arranged in the vicinity thereof. Further, the work of connecting these components by welding or the like can be performed collectively.

  Further, in the outdoor air-conditioning apparatus 100 of the present embodiment, the communication line 71 extending from the electrical component 28 is also arranged in the space inside the same corner 25d. Therefore, maintenance and connection work on the telegraph line 71 can be easily performed.

  Further, the heat source side gas side communication pipe 51, the heat source side liquid side communication pipe 52, the use side gas side communication pipe 53, the use side liquid side communication pipe 54, and the first heat source connected to each of these connection pipes Side gas branch pipe 64, second heat source side gas branch pipe 65, first heat source side liquid branch pipe 66, second heat source side liquid branch pipe 67, first use side gas branch pipe 34, second use side gas branch pipe 35 , The first use side liquid branch pipe 36, the second use side liquid branch pipe 37, the heat source side tube plate 63, the use side tube plate 33, and the communication line 71, all of which are higher than the reference lines 15x and 17x. They are collectively arranged on the corner 25d side. For this reason, since it is easy to secure a wide area inside the casing 10 on the side opposite to the corner 25d with respect to the reference lines 15x and 17x, it can be used as an arrangement space for other components. I have.

(4-2)
In the outdoor air conditioner 100 of the present embodiment, the two heat exchange surfaces of the first use side heat exchange unit 31 of the use side heat exchanger 3 and the two heat exchange surfaces of the second use side heat exchange unit 32 are used. A total of four heat exchange surfaces are provided so as to be parallel to the side surfaces 20a to 20d of the casing 10 having a polygonal outline shape in plan view. For this reason, when housed in the casing 10 of the same size, the use-side heat exchanger 3 of the present embodiment is more effective for heat exchange than a heat exchanger in which the heat exchange surface is circular in plan view. It is possible to secure a large area.

  Similarly, the heat source side heat exchanger 6 also has a total of four heat exchange surfaces of two heat exchange surfaces of the first heat source side heat exchange part 61 and two heat exchange surfaces of the second heat source side heat exchange part 62. Since the surfaces are all provided so as to be parallel to the side surfaces 20a to 20d of the casing 10 whose outline shape in plan view is a polygon, it is possible to secure a wide area effective for heat exchange. ing.

(4-3)
In the outdoor air-conditioning apparatus 100 of the present embodiment, the refrigerant flowing into the use-side heat exchanger 3 can flow separately to the first use-side heat exchange unit 31 and the second use-side heat exchange unit 32. For this reason, compared with the case where the refrigerant flow path is not branched, the length of the refrigerant flow path can be suppressed to be shorter, so that the pressure loss of the refrigerant can be reduced.

  Although the use-side heat exchanger 3 is divided into the first use-side heat exchange unit 31 and the second use-side heat exchange unit 32, the space inside the corner 25d is reduced to the first use side. A connection portion between the heat exchange unit 31 and the use-side gas-side communication pipe 53 or the use-side liquid-side communication pipe 54, a second use-side heat exchange unit 32 and the use-side gas-side communication pipe 53 or the use-side liquid-side communication pipe 54 It can be effectively used as both placement space for the connection part.

  Similarly, for the heat source side heat exchanger 6, the refrigerant flowing into the heat source side heat exchanger 6 can be flown separately to the first heat source side heat exchange section 61 and the second heat source side heat exchange section 62. For this reason, compared with the case where the refrigerant flow path is not branched, the length of the refrigerant flow path can be suppressed to be shorter, so that the pressure loss of the refrigerant can be reduced.

  And although the heat source side heat exchanger 6 is divided into the first heat source side heat exchange part 61 and the second heat source side heat exchange part 62 in this way, the space inside the corner 25d is changed to the first heat source side. A connection part between the heat exchange part 61 and the heat source side gas side communication pipe 51 or the heat source side liquid side communication pipe 52, a second heat source side heat exchange part 62 and a heat source side gas side communication pipe 51 or a heat source side liquid side connection pipe 52 It can be effectively used as both placement space for the connection part.

(4-4)
In the outdoor air conditioner 100 of the present embodiment, the heat source side heat exchanger 6 and the use side heat exchanger 3 are arranged in different spaces so as to be separated from each other in the vertical direction. Further, the heat-source-side heat exchanger 6 and the use-side heat exchanger 3 are arranged apart from each other with the use-side fan 4 therebetween. In other words, the heat transfer fins of the heat source side heat exchanger 6 and the heat transfer fins of the use side heat exchanger 3 are not connected. Thereby, the influence of heat between the heat source side heat exchanger 6 and the use side heat exchanger 3 can be suppressed sufficiently small.

  Further, by arranging the heat-source-side heat exchanger 6 and the use-side heat exchanger 3 apart from each other with the use-side fan 4 therebetween, it is necessary to provide the connection pipe so as to straddle the use-side fan 4 vertically. In the present embodiment, the heat source side gas side communication pipe 51 and the heat source side liquid side communication pipe 52 can also be accommodated in the space near the corner 25d.

(4-5)
The outdoor air-conditioning apparatus 100 of the present embodiment has a simple appearance because the components constituting the refrigerant circuit 9, the use side fan 4, and the heat source side fan 7 are accommodated in one casing 10. Can be. As described above, since the appearance of the outdoor air-conditioning apparatus 100 is rich in design, even when the outdoor air-conditioning apparatus 100 is used in a position that is easily visible near the user, the outdoor air-conditioning apparatus 100 received by the user can be used. Impression can be made good.

(4-6)
In the outdoor air conditioner 100 of the present embodiment, when the heat source side heat exchanger 6 functions as a refrigerant condenser, the air heated through the heat source side heat exchanger 6 is heated by the outdoor air conditioner. It is discharged upward from the device 100. Therefore, it is possible to suppress the supply of the heated air in the heat source side heat exchanger 6 to the user who wants the cooling air that has passed through the use side heat exchanger 3 functioning as the evaporator. .

  Moreover, since the air heated in the heat source side heat exchanger 6 has a lower specific gravity than the air cooled in the use side heat exchanger 3, the air heated in the heat source side heat exchanger 6 reaches the user. This can be more reliably suppressed.

  When the heat source side heat exchanger 6 functions as a refrigerant evaporator, the air cooled through the heat source side heat exchanger 6 is supplied to the outdoor air conditioner through the heat source side outlet 48. It is discharged upward from 100. For this reason, it can be suppressed that the air cooled in the heat source side heat exchanger 6 is supplied to a user who wants the heated air that has passed through the use side heat exchanger 3 functioning as a condenser. .

(4-7)
In the outdoor air-conditioning apparatus 100 of the present embodiment, since the electrical component 28 is disposed above the bottom plate 12, dust from the ground does not easily reach the electrical component 28.

  Further, the electrical component 28 is disposed below the use side fan 4, is located far away downward from the heat source side heat exchanger 6, and is used side heat than the heat source side heat exchanger 6. It is arranged at a position close to the exchanger 3. Therefore, even when the ambient temperature is high, such as when the heat source side heat exchanger 6 functions as a refrigerant condenser and the use side heat exchanger 3 functions as a refrigerant evaporator, the electrical components 28 Is suppressed, and the reliability of the electrical component 28 is easily ensured.

  By arranging the electrical component 28 in a relatively lower region in the casing 10 in this manner, the control target components (the use-side fan motor 4a, the heat source-side fan motor 7a, the wind direction adjusting member 24, etc.) via the communication line 71, the space inside the corner 25d can be effectively utilized as the communication line 71 arrangement space. ing.

(4-8)
The outdoor air-conditioning apparatus 100 of the present embodiment is provided with a plurality of use-side outlets 46 that open in the circumferential direction. For this reason, the conditioned air obtained by the heat exchange in the use-side heat exchanger 3 can be supplied in a plurality of directions around the outdoor air conditioner 100. Specifically, it is possible to supply the conditioned air to a wider area of 180 ° or more, more specifically, 270 ° or more, and more specifically, 360 °, excluding the pillars 11a to 11d. It has become.

  Furthermore, since the use side outlets 46 are provided with the wind direction adjusting members 24 for independently adjusting the direction of the conditioned air passing therethrough, the conditioned air is sent in every direction around the outdoor air conditioner 100. The position can be adjusted.

  In addition, since any one of the use-side outlets 46 can be closed by the wind direction adjusting member 24, the supply of the conditioned air around the outdoor air conditioner 100 in the direction in which the supply of the conditioned air is unnecessary is avoided. be able to.

  In addition, when the air conditioner is not in use, for example, when the operation is stopped, the use-side outlet 46 is closed by the wind direction adjusting member 24, so that dust and insects can be suppressed from entering the machine.

(4-9)
In the outdoor air-conditioning apparatus 100 of the present embodiment, each of the use-side heat exchanger 3 and the heat-source-side heat exchanger 6 has a plurality of heat exchange surfaces facing different directions, and also corresponds to the casing 10. As described above, the use-side suction port 45 and the heat-source-side suction port 47 that are opened in a plurality of directions are provided, so that both the use-side heat exchanger 3 and the heat-source-side heat exchanger 6 are in the circumferential direction. Heat exchange can be performed using air taken in from various directions.

(5) Modification (5-1) Modification A
In the outdoor air-conditioning apparatus 100 of the above embodiment, the expansion means 5 is disposed in a space vertically surrounded by the bottom plate 12 and the first partition plate 17, and the usage-side liquid-side communication pipe 54 extending from the expansion means 5 has the first partition. The heat source side liquid-side connecting pipe 52 is provided so as to pass vertically through the notch 17 a of the plate 17, and extends from the expansion means 5 to each of the first partition plate 17, the second partition plate 16, and the third partition plate 15. The case where it is provided so as to pass vertically through 17a, 16a and 15a has been described as an example.

  On the other hand, for example, the expansion means 5 is not a space vertically surrounded by the bottom plate 12 and the first partition plate 17, but, for example, the height between the use side heat exchanger 3 and the heat source side heat exchanger 6. It may be arranged in a position. In this case, it is necessary to route the use side liquid side communication pipe 54 extending from the use side heat exchanger 3 and the heat source side liquid side communication pipe 52 extending from the heat source side heat exchanger 6 to the space below the first partition plate 17. There is no. The expansion means 5 disposed at a height between the use-side heat exchanger 3 and the heat-source-side heat exchanger 6 is disposed in such a manner that the longitudinal direction thereof is substantially up and down. It can be a capillary tube housed in the inner space.

(5-2) Modification B
In the outdoor air conditioner 100 of the above embodiment, the top plate 13, the bottom plate 12, the fourth partition plate 14, the third partition plate 15, the second partition plate 16, and the first partition plate 17 are provided for the four columns 11a to 11d. The structure in which is fixed has been described as an example.

  On the other hand, all of the columns 11a to 11d need not be fixed to the top plate 13, the bottom plate 12, the fourth partition plate 14, the third partition plate 15, the second partition plate 16, and the first partition plate 17. For example, the support 11d provided at a position corresponding to the corner 25d in the above-described embodiment may be configured to be easily attached and detached by, for example, reducing the number of fixed portions as compared with the other supports 11a to 11c. This makes it possible to enhance the maintainability of components and the like arranged collectively in the corner 25d.

(5-3) Modification C
In the outdoor air conditioner 100 of the above embodiment, the case where the heat source side heat exchanger 6 is disposed above the use side heat exchanger 3 has been described as an example.

  On the other hand, the arrangement relationship between the heat source side heat exchanger 6 and the use side heat exchanger 3 is not limited to this, and the heat source side heat exchanger 6 is arranged below the use side heat exchanger 3. It doesn't matter. However, when the heat source side heat exchanger 6 functions as a refrigerant condenser and the use side heat exchanger 3 functions as a refrigerant evaporator, the waste heat generated in the heat source side heat exchanger 6 and the refrigerant evaporator Unnecessary cold heat in the heat-source-side heat exchanger 6 functioning as a heat source is easily discharged upward. Further, from the viewpoint that it is easy to supply the air conditioned by the use side heat exchanger 3 to the user in a state where the influence of the heat of the air passing through the heat source side heat exchanger 6 is suppressed. As in the embodiment, it is preferable that the heat source side heat exchanger 6 is disposed above the use side heat exchanger 3.

(5-4) Modification D
In the outdoor air-conditioning apparatus 100 of the above embodiment, the case where the use-side outlets 46 are formed so as to correspond to all of the plurality of side surfaces of the casing 10 has been described as an example.

  On the other hand, the outdoor air conditioner 100 may have, for example, one or two or more side surfaces on which no air outlet is formed. In this case, it is possible to secure the direction in which the blown air is not supplied, suppress the supply of the conditioned air in the direction in which the conditioned air is not required, and adjust the conditioned air in the direction in which the conditioned air is required. It becomes possible to supply air more sufficiently.

(5-5) Modification E
In the outdoor air-conditioning apparatus 100 of the above-described embodiment, the use-side heat exchanger 3 and the heat-source-side heat exchanger 6 which are present in all circumferential directions by providing four heat exchange surfaces have been described as examples. .

  On the other hand, the heat exchange surfaces of the use side heat exchanger 3 and the heat source side heat exchanger 6 may be oriented in three circumferential directions, or may be oriented in two circumferential directions. Or it may be oriented in only one circumferential direction.

  The number of heat exchange surfaces of the use side heat exchanger 3 and the heat source side heat exchanger 6, the number of heat source side suction ports 47, the number of use side suction ports 45, and the number of use side outlets 46 are as follows. For example, when the number of heat exchange surfaces of the use side heat exchanger 3 and the heat source side heat exchanger 6 is three, the heat source side suction port 47, the use side suction port 45, The number of the use side outlets 46 may be four.

(5-6) Modification F
In the outdoor air conditioner 100 of the above embodiment, the case where the electrical component 28 is disposed below the use side fan 4 and the use side heat exchanger 3 has been described as an example.

  On the other hand, it is not necessary that all of the electrical components included in the outdoor air-conditioning apparatus 100 be disposed below the use-side fan 4 and the use-side heat exchanger 3, and some of the electrical components are located at other positions (for example, , The space between the user-side bell mouth 41 and the casing 10).

(5-7) Modification G
In the outdoor air-conditioning apparatus 100 of the above embodiment, a case where the heat source side fan motor 7a of the heat source side fan 7 and the use side fan motor 4a of the use side fan 4 are separately provided as an example. Explained.

  On the other hand, the heat-source-side fan 7 and the use-side fan 4 may have a common fan motor arranged on the rotation shaft of both.

(5-8) Modification H
In the outdoor air conditioner 100 of the above embodiment, the use side heat exchanger 3 is provided on the upstream side of the air flow with respect to the use side fan 4, and the heat source side heat is provided on the upstream side of the air flow with respect to the heat source side fan 7. The case where the exchanger 6 is provided has been described as an example.

  On the other hand, the use side heat exchanger 3 may be disposed downstream of the air flow with respect to the use side fan 4, and the use side heat exchanger 3 is located above the use side fan 4 in the casing 10. May be arranged. However, from the viewpoint of blowing the conditioned air obtained by the use-side heat exchanger 3 from a higher position, the arrangement of the above embodiment is preferable.

  Further, the heat source side heat exchanger 6 may be disposed downstream of the air flow with respect to the heat source side fan 7, and the heat source side heat exchanger 6 is disposed on the heat source side fan 7 in the casing 10. May be. However, from the viewpoint of more easily sending waste heat in the heat source side heat exchanger 6 functioning as a condenser for the refrigerant, the arrangement of the above embodiment is preferable.

(5-9) Modification I
In the outdoor air conditioner 100 of the above embodiment, the heat source side heat exchanger 6 has two L-shaped heat source side heat exchange portions in plan view, and the use side heat exchanger 3 also has two L-shaped plan view. The case where the use side heat exchange unit is provided has been described as an example.

  On the other hand, the shape in plan view of the heat source side heat exchange portion of the heat source side heat exchanger 6 is not limited to an L-shape in which two sides are connected via a bent portion, but intersects in plan view. A shape in which three or more portions extending in the direction are connected via a bent portion may be used. Here, it is preferable that all of the three or more portions extend along the opposing side surfaces 20a to 20d of the casing 10 in plan view.

  Similarly, the shape of the utilization exchange unit of the utilization-side heat exchanger 3 in plan view may be a shape in which three or more portions extending in directions intersecting with each other in plan view are connected via a bent portion. . Here, it is preferable that all of the three or more portions extend along the opposing side surfaces 20a to 20d of the casing 10 in plan view.

(5-10) Modification J
In the outdoor air conditioner 100 of the embodiment, the case where the drain tank 29 for storing the dew water generated in the heat exchanger is provided as an example has been described.

  On the other hand, the outdoor air conditioner 100 does not necessarily need to include the drain tank.

  For example, the dew condensation water trapped in the first partition plate 17 which is disposed below the use side heat exchanger 3 and functions as a drain pan may be discharged to the outside of the casing 10 via a drain hose (not shown) or the like. Good. For example, one end of the drain hose is connected to the lower side of an opening (not shown) formed to penetrate vertically near the corner of the first partition plate 17, and the other end of the drain hose penetrates vertically in the bottom plate 12. It may be configured to be connected to an opening (not shown) formed so as to perform drainage below the outdoor air conditioner 100.

  Further, the dew condensation water trapped in the third partition plate 15 which is disposed below the heat source side heat exchanger 6 and functions as a drain pan may be discharged to the outside of the casing 10 via a drain hose or the like.

  Here, the drainage path of the condensed water generated in the use-side heat exchanger 3 and the drainage path of the condensed water generated in the heat source-side heat exchanger 6 may be provided separately or merge from the middle. It may be provided as follows.

  In addition, the heat source side gas side connection pipe 51, the heat source side liquid side connection pipe 52, the use side gas side connection pipe 53, the use side liquid side connection pipe 54, and the first heat source connected to each of these connection pipes Side gas branch pipe 64, second heat source side gas branch pipe 65, first heat source side liquid branch pipe 66, second heat source side liquid branch pipe 67, first use side gas branch pipe 34, second use side gas branch pipe 35. The first use side liquid branch pipe 36, the second use side liquid branch pipe 37, the heat source side tube plate 63, the use side tube plate 33, and the communication line 71 are all arranged collectively in the space of the corner 25d. By doing so, a wide space for the corners 25a to 25c other than the corner 25d is secured. For this reason, the space of the corners 25a to 25c can be used as a space for arranging other components, and a drain hose for draining the condensed water generated in the use side heat exchanger 3 as described above. It can also be used as an arrangement space for a drain hose for draining dew condensation water generated in the heat source side heat exchanger 6.

  While the embodiments of the present disclosure have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the present disclosure described in the claims. .

1: compressor 2: four-way switching valve 3: use side heat exchanger 4: use side fan (second fan)
5: expansion means 6: heat source side heat exchanger 7: heat source side fan (first fan)
8: Accumulator 9: Refrigerant circuit 10: Casing 11a, 11b, 11c, 11d: Column 12: Bottom plate 13: Top plate 14: Fourth partition plate 15: Third partition plate 16: Second partition plate 17: First partition plate 18: Casters 19a, 19b: Fixed plates 20a, 20b, 20c, 20d: Side surfaces 21: Upper decorative plate 22: Intermediate decorative plate 23: Lower decorative plate 24: Wind direction adjusting members 25a, 25b, 25c, 25d: Corners One corner)
28: electrical component 29: drain tank 31: first use side heat exchange section (use side heat exchange section)
32: second use side heat exchange section (use side heat exchange section)
33: Use side tube sheet (use side pipe connection part)
34: 1st use side gas branch pipe (use side pipe connection part)
35: second use side gas branch pipe (use side pipe connection)
36: 1st use side liquid branch pipe (use side pipe connection part)
37: second use side liquid branch pipe (use side pipe connection part)
41: use side bell mouth 42: heat source side bell mouth 45: use side suction port 46: use side outlet 47: heat source side suction port 48: heat source side outlet 51: heat source side gas side connection pipe (heat source side connection pipe)
52: heat source side liquid side connection pipe 53: use side gas side connection pipe (use side connection pipe)
54: utilization side liquid side communication pipe 61: first heat source side heat exchange section (heat source side heat exchange section)
62: second heat source side heat exchange section (heat source side heat exchange section)
63: heat source side tube sheet (heat source side pipe connection part)
64: 1st heat source side gas branch pipe (heat source side pipe connection part)
65: Second heat source side gas branch pipe (heat source side pipe connection part)
66: 1st heat source side liquid branch pipe (heat source side pipe connection part)
67: Second heat source side liquid branch pipe (heat source side pipe connection part)
71: Communication line 100: Outdoor air conditioner

JP 2002-228186 A

Claims (9)

A compressor (1), a heat source side heat exchanger (6), a first fan (7) for generating an air flow passing through the heat source side heat exchanger, a use side heat exchanger (3), A second fan (4) for generating an air flow passing through the use side heat exchanger, a heat source side communication pipe (51) connecting the heat source side heat exchanger and the compressor, and the use side heat exchanger An outdoor air conditioner (100) comprising: a communication pipe (53) for communicating the compressor with the compressor.
A casing (10) accommodating at least the heat source side heat exchanger and the utilization side heat exchanger therein, and having a polygonal shape having a plurality of corners (25a to 25d) in plan view;
One of the plurality of corners of the contour in the plan view of the casing is a first corner (25d),
A heat source side pipe connection part (63 to 67) to which the heat source side communication pipe of the heat source side heat exchanger is connected, and a use side of the use side heat exchanger to which the use side communication pipe is connected. Both of the pipe connection portions (33 to 37) are arranged at a position closer to the first corner portion than the center of the polygon which is the contour shape of the casing in plan view.
Outdoor air conditioner. Both the heat-source-side pipe connection and the use-side pipe connection are, in plan view, more than the line (15x, 17x) connecting the centers of the two sides constituting the first corner. Located on one corner,
The outdoor air conditioner according to claim 1. The heat source side pipe connection portion includes a heat source side tube sheet (63) provided in the heat source side heat exchanger,
The use side pipe connection portion includes a use side tube sheet (33) provided in the use side heat exchanger.
The outdoor air conditioner according to claim 1 or 2. The heat source side communication pipe and the use side communication pipe extend along the first corner,
The outdoor air conditioner according to any one of claims 1 to 3. The casing has a square contour in plan view,
The outdoor air conditioner according to any one of claims 1 to 4. The heat source side heat exchanger and the use side heat exchanger extend in plan view along two or more adjacent sides of each side constituting the polygonal contour of the casing. Having parts,
The outdoor air conditioner according to any one of claims 1 to 5. The heat source side heat exchanger includes two L-shaped heat source side heat exchange portions (61, 62) having a heat source side bent portion, and
The plurality of heat source-side heat exchange sections are arranged such that the insides of the respective heat source-side bent sections face each other in plan view,
The use-side heat exchanger has two use-side heat exchange portions (31, 32) each having an L-shape in plan view having a use-side bent portion,
The plurality of usage-side heat exchange units are arranged such that the insides of the usage-side bent portions face each other in plan view,
The heat source side pipe connection portions (64, 65, 66, 67, 63) of the plurality of heat source side heat exchange portions, and the use side pipe connection portions (34, 35) of the plurality of use side heat exchange portions, respectively. , 36, 37, 33) are disposed at positions closer to the first corner than the center of the polygon, which is the contour shape of the casing, in a plan view.
The outdoor air conditioner according to any one of claims 1 to 6. The heat source side heat exchanger and the use side heat exchanger are arranged apart from each other,
The outdoor air conditioner according to any one of claims 1 to 7. The second fan is housed inside the casing and between the heat source side heat exchanger and the use side heat exchanger,
The outdoor air conditioner according to claim 8.

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