JP5338883B2 - Heat source unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact heat source unit that attains high heat exchange efficiency without being affected by the deflected flow of the amount of suction air. <P>SOLUTION: In the heat source unit constituted so as to arrange a heat exchange unit X and a fan 3 in a casing 10, the heat exchange unit X is constituted so that a substantially hook-shaped first heat exchanger 1 and a substantially hook-shaped second heat exchanger 2, which are formed by arranging heat transfer pipes adjacent to each other in one or two lines in the ventilation direction, are arranged in a position where one straight part 1a of the first heat exchanger 1 and one straight part 2a of the second heat exchanger 2 face a front surface suction portion 11A, the other straight part 1b of the first heat exchanger 1 to face a first side surface suction port 11B and the other straight part 2b of the second heat exchanger 2 to face a second side surface suction port 11C are arranged, and a plurality of the heat exchangers 1, 2 show substantially U-shaped as a whole and are arranged inside the heat exchange unit X so that the axis line of a fan 3 is perpendicular to the front surface suction port 11A and an air blow-out port 12. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a heat source unit that is configured by housing equipment such as a heat exchanger, a fan, and a compressor in a casing, and mainly used as an outdoor unit of an air conditioner.

  In this type of heat source unit, air inlets are provided on the front surface and both left and right side surfaces of the casing so that air is sucked from as wide an area as possible, and heat is generated so as to correspond to the arrangement of the air inlet ports. When the shape of the exchanger is set, the intake air amount varies between the air intake ports due to the relationship with the formation position of each air intake port, and therefore, a drift of the intake air amount occurs in the heat exchanger. Heat exchange efficiency will be deteriorated.

  In order to cope with such a problem, in the heat exchanger having a single-row configuration in which the heat transfer tubes are arranged in a single row, the fin pitch in each part is changed corresponding to the suction air volume (see Patent Document 1), While the heat exchanger itself has two rows of heat exchangers facing the fan suction side and corresponding to the front air intake port with a large amount of suction air, the suction air volume is provided to deviate from the left and right of the fan suction direction. The heat exchanger corresponding to the side air inlet with a small number of side walls is configured in a single row (see Patent Document 2), and further provided with a U-shaped heat exchanger, and the compressor is projected to the front side of the casing Thus, there has been proposed one that enlarges the passage space from the side air suction port to increase the suction air volume (see Patent Document 3).

  On the other hand, when arranging devices such as a heat exchanger, a compressor, and an accumulator in the casing, it is necessary to connect these devices by piping. In this case, for example, as shown in Patent Document 4, It is customary to secure a piping space between the device and the wall surface of the casing and arrange the piping through the piping space.

JP 7-198167 A JP-A-8-270985 JP 2003-130393 A JP 2003-106568 A

  However, as shown in Patent Document 1, in the configuration in which the fin pitch is changed in the heat exchanger of the single row configuration, the pressure loss increases as the fin pitch becomes denser. Therefore, the heat exchange efficiency is improved by changing the fin pitch. There are limits. Further, in such a configuration, the structure of the heat exchanger is complicated, and the cost is increased due to a decrease in production efficiency.

  As shown in Patent Document 2, the structure in which the front-side heat exchanger is configured in two rows and the side-side heat exchanger is configured in one row has a single heat exchanger as a front air inlet and air on both sides. It cannot be applied to a U-shaped heat exchanger whose shape is set in a U shape so as to correspond to each of the suction ports.

  As shown in Patent Document 3, in the method of expanding the intake air passage space by changing the installation position of the compressor in the casing, the casing is enlarged and the shape is irregular. There are problems such as poor sex.

  On the other hand, when a pipe space is provided between a device such as a heat exchanger and the wall surface of the casing located outside the pipe, and the pipe is arranged through the pipe space, the heat source unit is formed by the amount of the pipe space. The width dimension is enlarged, which is against the demand for compactness.

  Accordingly, the present invention has been made for the purpose of providing a heat source unit that can achieve high heat exchange efficiency without being affected by the drift of the suction air volume, and that can meet the demand for compactness.

  In the present invention, the following configuration is adopted as a specific means for solving such a problem.

In the heat source unit according to the first invention of the present application, the front suction port 11A is provided on the front surface 1a, the first side suction port 11B is provided on one side surface 1b, the second side suction port 11C is provided on the other side surface 1c, and the rear surface 1d. in the heat source unit configured by arranging a heat exchange unit X and the fan 3 in the casing 10 in the air outlet (12) is provided, the heat exchange unit X, one after the heat transfer tube in the airflow direction A first heat exchanger 1 having a substantially bowl shape in plan view arranged in one or two rows and a second heat exchanger 2 having a substantially bowl shape in plan view having heat transfer tubes arranged in one or two rows are arranged in the first. One straight portion 1a of the heat exchanger 1 and one straight portion 2a of the second heat exchanger 2 are arranged so as to be moved back and forth in the ventilation direction at a position facing the front suction port (11A) and the first side surface. Heat is applied to the other straight portion 2b of the second heat exchanger 2 facing the suction port 11B. While it configured to exhibit plane substantially U-shape as a whole of the plurality of heat exchangers 1 and 2 are arranged so as to face the interrupter units width direction, the first one of the straight portions of the heat exchanger 1 1a and one straight portion 2a of the second heat exchanger 2 are arranged in close proximity to each other and are “high-capacity” first heat exchange portions X1, and the other direct portion 1b of the first heat exchanger 1 The second heat exchange section X2 having only “medium capacity” and the third heat exchange section X3 having “small capacity” consisting only of the other direct portion 2b of the second heat exchanger 2 Inside the heat exchange unit X, the fan 3 has its axis orthogonal to the front suction port 11A and the air outlet 12 and has a higher heat exchange capability than the center in the width direction of the heat exchange unit X. It is characterized by being displaced .

In the heat source unit according to the second invention of the present application, in the heat source unit according to the first invention, the compressor 6 is disposed near the end of the heat exchanger unit X on the side where the heat exchange capability is low. It is said.

The heat source unit according to the third aspect of the present invention, in the first or the heat source unit according to the second invention, the heat exchanger unit X of the first heat exchanger 1 and the second heat exchanger 2 When each of the heat exchangers 1 and 2 performs a condensing action, of the heat exchangers 1 and 2, the heat exchanger 1 or 2 having a high heat exchange capability is disposed upstream of the refrigerant, and the heat having a low heat exchange capability is obtained. The exchanger 2 or 1 is positioned on the downstream side of the refrigerant, and the flow direction of the refrigerant in the heat exchanger 1 or 2 having a high heat exchange capability and the flow of the refrigerant in the heat exchanger 2 or 1 having a low heat exchange capability. It is characterized by pipe connection so that the directions face each other.

The heat source unit according to the fourth aspect of the present invention, the in the first, the second or the heat source unit according to the third invention, among the first heat exchanger 1 and the second heat exchanger 2, a suction air volume The stage pitch or fin pitch of many heat exchangers 1 or 2 is set to be smaller than the stage pitch or fin pitch of the heat exchanger 2 or 1 with a small amount of intake air.

The heat source unit according to a fifth aspect of the present invention, in the above-mentioned heat source unit according to the first invention, among the first heat exchanger 1 and the second heat exchanger 2, the heat exchanger located in the ventilating direction upstream side The height dimension of the heat exchanger 1 or 2 is set smaller than the height dimension of the heat exchanger 2 or 1 located on the downstream side in the ventilation direction, and the lower end of the heat exchanger 1 or 2 located on the upstream side in the ventilation direction and the downstream in the ventilation direction The space 20 for piping is provided between the lower ends of the heat exchanger 2 or 1 located in the side.

In the present invention, the following effects can be obtained.
(A) According to the heat source unit according to the first invention of the present application, the front suction port 11A is provided on the front surface 1a, the first side suction port 11B is provided on one side surface 1b, and the second side suction port 11C is provided on the other side surface 1c. In the heat source unit configured by disposing the heat exchange unit X and the fan 3 in the casing 10 provided with the air outlet 12 on the back surface 1d, the heat exchange unit X is moved back and forth in the direction of ventilation of the heat transfer tube. The first heat exchanger 1 having a generally planar shape in a plan view arranged in one or two rows and the second heat exchanger 2 having a generally saddle shape in a plan view having heat transfer tubes arranged in one or two rows, One straight portion 1a of the first heat exchanger 1 and one straight portion 2a of the second heat exchanger 2 are arranged in the airflow direction at a position facing the front suction port 11A, and the first side surface. The other straight portion 1b of the first heat exchanger 1 facing the suction port 11B and the above The plurality of heat exchangers 1 and 2 are flat as a whole by disposing the other side portion 2b of the second heat exchanger 2 facing the two-side suction port 11C so as to face the heat exchanger unit width direction. The fan 3 is configured so as to have a substantially U-shape when viewed, and the fan 3 is arranged inside the heat exchange unit X so that the axis thereof is orthogonal to the front suction port 11A and the air outlet 12. Therefore, the heat exchange capacities of the plurality of heat exchangers 1 and 2 can be individually set, and the heat exchange of the heat exchange unit X can be performed by appropriately setting the combination of the plurality of heat exchangers 1 and 2. It is easy to make the capacity correspond to the air volume distribution between the parts of the heat exchange unit X. As a result, the heat exchange unit X has a substantially U shape in plan view, and the intake air between the parts of the heat exchange unit X Drift Be configured arising is that without being affected in drift of, it is possible to achieve a high heat exchange efficiency as a whole the heat exchange unit X, and by extension may provide a heat source unit of a high capacity.
(B) Further, in the heat source unit according to the first invention of the present application, the heat exchanger unit X is arranged in a row or row in front and rear in the direction of ventilation of the heat transfer tube, and has a substantially bowl-shaped first in plan view. a heat exchanger 1 and the heat transfer tube 1 row or the plan view hook arranged in two rows the second heat exchanger 2, the first one of the straight portions of the heat exchanger 1 1a and the second heat exchanger 2, the other straight part 1 b of the first heat exchanger 1 and the other straight part 2 b of the second heat exchanger 2 are arranged in the heat exchanger unit width direction. It arrange | positions so that it may oppose.
Therefore, the portion where the first one straight portion 1a of the heat exchanger 1 and the second one of the straight portion 2a of the heat exchanger 2 is longitudinal in the ventilating direction is opposite so as to be perpendicular to the suction axis of the fan However, since the first heat exchanger 1 and the second heat exchanger 2 move back and forth in the ventilation direction, the highest heat exchange capacity can be obtained at the portion where the intake air amount is the largest.

  On the other hand, the other straight portion 1b of the first heat exchanger 1 and the other straight portion 2b of the second heat exchanger 2 are opposed to each other in the heat exchanger unit width direction. These portions are portions where the first heat exchanger 1 and the second heat exchanger 2 are disposed independently, respectively, where the suction air volume is small and the portion is located away from the suction axis in the width direction. The heat exchange capacity is relatively low.

As a result, in the heat exchange unit X, the amount of the intake air flow corresponds to the level of the heat exchange capacity, and high heat exchange efficiency is achieved as a whole.
(C) In addition, the heat exchange unit X is arranged in a state where one straight portion 1a of the first heat exchanger 1 and one straight portion 2a of the second heat exchanger 2 are arranged in close proximity to each other. "Capacity" first heat exchanging part X1, second medium heat capacity second heat exchanging part X2 consisting only of the other direct part 1b of the first heat exchanger 1, and the other heat exchanging part 2 of the second heat exchanger 2 The small heat capacity third heat exchanging part X3 consisting only of the straight part 2b is used, and inside the heat exchanging unit X, the fan 3 has its axis lined to the front inlet port 11A and the air outlet port 12A. Since the heat exchanging unit X is arranged so as to be deviated to the side where the heat exchanging capacity is higher than the center in the width direction of the heat exchanging unit X, there is a correspondence between the amount of air intake and the level of heat exchanging capacity. As a whole, a high heat exchange efficiency is achieved.
(D) According to the heat source unit according to the second aspect of the invention, the (a), (b) or specific effect is obtained as follows in addition to the effect described in (c). In other words, in the present invention, the compressor 6 is disposed near the end of the heat exchanger unit X where the heat exchange capacity is low, so that the compressor 6 is sucked from the compressor 6 due to the presence of the compressor 6. Even if the air passage space is narrowed and the suction air volume from the part is smaller than the suction air volume from the other part and the suction air to the heat exchange unit X is drifted, As a result, the heat exchange capacity corresponds to a certain amount (air volume distribution). As a result, in the heat exchange unit X, the suction air volume corresponds to the heat exchange capacity. High heat exchange efficiency is achieved as a whole regardless of the existence.
(E) According to the heat source unit according to the third aspect of the present invention, the (a), (b), (c) or obtained specific effect as follows in addition to the effects described in (d) of It is done. That is, in the present invention, the heat exchanger unit X of the first heat exchanger 1 and the second heat exchanger 2, each of said heat exchanger when the respective heat exchangers 1 and 2 forms a condensation action 1 and 2, heat exchanger 1 or 2 with high heat exchange capability is located on the refrigerant upstream side, heat exchanger 2 or 1 with low heat exchange capability is located on the refrigerant downstream side, and heat exchange capability is high Since the piping connection is made so that the flow direction of the refrigerant in the heat exchanger 1 or 2 and the flow direction of the refrigerant in the heat exchanger 2 or 1 having a low heat exchange capacity are opposed to each other, the heat exchanger having a high heat exchange capacity 1 or 2 is on the gas side, and the heat exchanger 2 or 1 having a low heat exchange capability is on the liquid side, so that a counter flow of the refrigerant during condensation is realized, and a heat source unit having a higher condensation capability can be provided.
According to the heat source unit according to the fourth aspect of (f) application, the (a), (b), (c), (d) or specific as follows in addition to the effect described in (e) The effect is obtained. That is, in the present invention, the step pitch or fin pitch of the heat exchanger 1 or 2 having a large suction air amount out of the first heat exchanger 1 and the second heat exchanger 2 is replaced with the heat exchanger 2 or 2 having a small suction air amount. Since the heat exchanger 1 or 2 having a large suction air volume can be set smaller than the stage pitch or fin pitch of 1, the heat exchange capacity can be increased by reducing the stage pitch or fin pitch. In the few heat exchangers 2 or 1, the increase in the ventilation resistance at the time of frosting can be suppressed low by increasing the step pitch or the fin pitch. As a synergistic effect of these, a heat source unit having a high heat exchanging capacity is provided. Can be provided.
(G) According to the heat source unit according to a fifth aspect of the present invention, the (a), (b) or specific effect is obtained as follows in addition to the effect described in (c). That is, the thermal this invention, among the first heat exchanger 1 and the second heat exchanger 2, which is located a height of the heat exchanger 1 or 2 located ventilating direction upstream side in the airflow direction downstream side For the piping between the lower end of the heat exchanger 1 or 2 located on the upstream side in the ventilation direction and the lower end of the heat exchanger 2 or 1 located on the downstream side in the ventilation direction. Since the space 20 is provided, when the heat exchangers 1, 2, etc. are installed in the casing 10, first, the heat exchanger 2 or 1 located on the downstream side in the ventilation direction (that is, closer to the fan 3). To connect the piping of the heat exchanger 2 or 1 and the in-machine piping, and then install the heat exchanger 1 or 2 located on the upstream side in the ventilation direction (that is, the side close to the air suction port) , The machine through the piping gap 20 provided on the lower end side of the heat exchanger 1 or 2 Pipes can be pulled out to the heat exchanger 1 or 2 side and connected to the pipes, for example, by bypassing the side of equipment such as heat exchangers or compressors on the side in the machine as in the past Compared to the case where a space is provided, the casing 10 can be made compact in the width direction, and thus the heat source unit can be made compact in the width direction.

It is a cross-sectional view of the heat source unit according to the first embodiment of the present invention. It is an II-II arrow line view of FIG. It is a piping diagram of a heat exchanger. It is a cross-sectional view of the heat source unit according to the second embodiment of the present invention. It is a cross-sectional view of a heat source unit according to a third embodiment of the present invention. It is a cross-sectional view of the heat source unit according to the first reference example of the present invention. It is a cross-sectional view of a heat source unit according to a second reference example of the present invention. It is a cross-sectional view of a heat source unit according to a third reference example of the present invention. It is a cross-sectional view of a heat source unit according to a fourth reference example of the present invention. It is a cross-sectional view of a heat source unit according to a fifth reference example of the present invention. It is a cross-sectional view of a heat source unit according to a sixth reference example of the present invention.

  Hereinafter, the present invention will be specifically described based on preferred embodiments.

I: First Embodiment FIGS. 1 and 2 show an outdoor unit Z1 of an air conditioner as a heat source unit according to a first embodiment of the present invention. This outdoor unit Z1 includes a heat exchange unit X described below, a fan 3 including a motor 4 and an impeller 5, a vertical compressor 6 and a horizontal accumulator in a casing 10 having a rectangular box shape. 8 is accommodated.

  The casing 10 includes a front suction port 11A on the front surface 1a, a first side suction port 11B on one side surface 1b, and a second side suction port 11C on the other side surface 1c. The air inlet 11 is comprised by 11B and 11C. An air outlet 12 is provided on the back surface 1 d of the casing 10.

  And the said fan 3 is arrange | positioned facing the said air blower outlet 12, and blows off the air suck | inhaled from each said air suction inlet 11A, 11B, 11C from the said air blower outlet 12. FIG. The compressor 6 is arranged upright at the bottom of the corner surrounded by the other side surface 1c and the back surface 1d of the casing 10. Further, the accumulator 8 is placed horizontally so as to be positioned near the bottom surface 10 e of the casing 10 and below the fan 3.

  On the other hand, the heat exchange unit X is configured by combining a cross fin-shaped first heat exchanger 1 and a second heat exchanger 2 described below, and has a generally U-shaped form in plan view. The air intake ports 11A, 11B, and 11C correspond to the air intake ports 11A, 11B, and 11C, respectively, and are disposed so as to surround the fan 3 and the compressor 6 on the concave portion side.

  The first heat exchanger 1 is a heat exchanger having a two-row configuration in which the paths are arranged in two rows in the front and rear directions, and has a long width by bending a portion near one end in the width direction in a substantially orthogonal shape. It has a substantially bowl-shaped configuration in plan view, which includes the straight portion 1a and the other straight portion 1b having a short width.

  The second heat exchanger 2 is a one-row heat exchanger having one row of paths, and a straight portion 2a having a long width by bending a portion near one end in the width direction in a substantially orthogonal shape. It has a substantially bowl-shaped shape in plan view provided with the other straight portion 2b having a short width.

  Moreover, the height dimension of the said 1st heat exchanger 1 is set to the dimension larger only the predetermined dimension than the height dimension of the said 2nd heat exchanger 2, as shown in FIG.

  Further, the fin pitch of the first heat exchanger 1 is set to be smaller than the fin pitch of the second heat exchanger 2, and the heat exchange capacity of both of them is that the path configuration is a two-row configuration and a one-row configuration. Combined with this, the first heat exchanger 1 has a higher heat exchange capacity than the second heat exchanger 2. Such a configuration can achieve high heat exchange efficiency by disposing the first heat exchanger 1 having a high heat exchange capacity in a portion having a large amount of suction air. Moreover, the said 2nd heat exchanger 2 with a low heat exchange capability arrange | positions this in the site | part with a small amount of suction | inhalation air | flow, and when this 2nd heat exchanger 2 made | forms a condensing effect | action, the frost formed in the fin However, the increase in ventilation resistance due to this can be minimized.

  When the first heat exchanger 1 and the second heat exchanger 2 configured as described above are combined to form the heat exchange unit X, first, the first heat exchanger 1 is directly connected to one of the first heat exchanger 1 and the second heat exchanger 2. The part 1a is disposed at a predetermined position in the casing 10 so as to face the front suction port 11A and the other straight part 1b to face the first side suction port 11B. Then, the pipe of the first heat exchanger 1 is connected to the in-machine pipe.

  Next, the second heat exchanger 2 is placed on the outside of the first heat exchanger 1, and one straight portion 2a thereof is in close proximity to one straight portion 1a of the first heat exchanger 1, and the other The part 2b is disposed so as to be opposed to the other direct part 1b of the first heat exchanger 1 with the interior space interposed therebetween. In this case, by arranging the upper surfaces of the first heat exchanger 1 and the second heat exchanger 2 at the same height, a pipe gap is provided below the other end of the second heat exchanger 2 having a small height. 20 is formed.

  In this state, one straight portion 1a of the first heat exchanger 1 and one straight portion 2a of the second heat exchanger 2 are placed outside the second heat exchanger 1 in the bending direction of the first heat exchanger 1. The first heat exchanger 1 is arranged so as to be positioned back and forth, and the tube plate 14 connects the vicinity of the bent portion of the first heat exchanger 1 and the end of the straight portion 2a of the second heat exchanger 2 with the first heat. The end portion of the straight portion 1a of the exchanger 1 and the vicinity of the bent portion of the second heat exchanger 2 are connected by a tube plate 15 to be integrated to constitute the heat exchange unit X.

  Thereafter, the pipe of the second heat exchanger 2 is connected to the pipe in the machine, and the pipe in the machine is further passed from the lower side of the second heat exchanger 2 through the pipe gap 20 to the front 1a side of the casing 10. Pull out to. Thus, the width of the heat exchange unit X can be obtained by passing the in-machine piping through the piping gap 20 formed by making the first heat exchanger 1 and the second heat exchanger 2 different in height. Compared to the case where a gap for piping is provided on the outer side in the direction, the width of the casing 10 can be reduced to make the casing compact.

  The heat exchange capacity of the heat exchange unit X configured as described above is such that one straight part 1a of the first heat exchanger 1 and one straight part 2a of the second heat exchanger 2 are arranged close to each other. The first heat exchanging part X1 is “large capacity”, the second heat exchanging part X2 composed only of the other straight part 1b of the first heat exchanger 1 is “medium capacity”, and the second heat exchanging is further performed. The third heat exchanging part X3 configured only by the other straight part 2b of the vessel 2 is set to “small capacity”. That is, the heat exchange unit X is composed of three parts having different heat exchange capabilities.

  In FIG. 1, reference numeral 7 denotes a header arranged in a space between the end of one straight portion 1 a of the first heat exchanger 1 and the corner portion of the second heat exchanger 2.

  Here, although it is a piping structure of the said 1st heat exchanger 1 and the 2nd heat exchanger 2, in this embodiment, as shown in FIG. 3, each of these heat exchangers 1 and 2 acts as a condenser. In this case, the paths are connected so that the first heat exchanger 1 having a high heat exchange capability is located on the upstream side of the refrigerant and the second heat exchanger 2 having a low heat exchange capability is located on the downstream side of the refrigerant. That is, FIG. 3 shows an example in which the first heat exchanger 1 and the second heat exchanger 2 both have a single-row arrangement, but in this case, each of the first heat exchangers 1 in the first heat exchanger 1 is shown. After the paths 16A to 16F adjacent to each other on the downstream side are joined together, the joining pipes are connected to the paths 17A to 17C of the second heat exchanger 2, respectively. By adopting such a piping configuration, it is possible to equalize the refrigerant flow rate on the first heat exchanger 1 side where gas refrigerant mainly flows and the refrigerant flow rate on the second heat exchanger 2 side where liquid refrigerant mainly flows. As compared to the case where the refrigerant flow rate is different between both the heat exchangers 1 and 2 as a result of the same number of passes of the first heat exchanger 1 and the second heat exchanger 2, the heat exchange unit High heat exchange efficiency can be obtained as a whole X.

  In this embodiment, considering that the heat exchange capacity of the other straight part 1b of the first heat exchanger 1 is higher than that of the other straight part 2b of the second heat exchanger 2. The axis L2 of the fan 3 is displaced closer to the first side suction port 11B than the center line L1 of the heat exchange unit X so that a larger amount of air flows to the side with higher heat exchange capacity. Yes.

  In the outdoor unit Z1 configured as described above, as shown in FIG. 1, air is sucked from the air suction ports 11A, 11B, and 11C of the casing 10 as the fan 3 is operated. The relative relationship of the intake air amount from each of these air intake ports 11A, 11B, and 11C is that the front intake port 11A facing in the axial direction of the fan 3 is “large air amount”, and it is lateral to the fan 3. Although the first side suction port 11B close to the fan 3 is positioned at the “medium air volume”, the second side suction port 11C located on the side of the fan 3 and far from the fan 3 is “ “Small air volume”.

  In order to correspond to this air volume distribution, the heat exchange unit X has a “large capacity” first heat exchanging portion X1 in the “large capacity” front suction port 11A and a “medium capacity” second heat. The exchange part X2 is arranged to face the first side suction port 11B with "medium air volume" and the third heat exchange part X3 with "small capacity" faces the second side suction port 11C with "small air volume". .

  As a result, in this outdoor unit Z1, the amount of suction air corresponds to the level of heat exchange capacity, and high heat exchange efficiency is achieved as a whole.

II: Second Embodiment FIG. 4 shows an outdoor unit Z2 of an air conditioner as a heat source unit according to a second embodiment of the present invention. The outdoor unit Z2 has the same basic configuration as the outdoor unit Z1 of the first embodiment, and is different from the outdoor unit Z1 in the configuration of the heat exchange unit X. Therefore, here, by omitting the description by using the corresponding description of the first embodiment by attaching the same reference numerals to the respective constituent members in FIG. 4 corresponding to the respective constituent members in FIG. Description will be made focusing on the configuration of the heat exchange unit X.

  The heat exchanging unit X provided in the outdoor unit Z2 of this embodiment has a long width by bending a portion near one end in the width direction of a cross fin type heat exchanger having a single row structure having a single row path in a substantially orthogonal shape. A widthwise direction of a first heat exchanger 1 having a substantially bowl shape in plan view having one straight part 1a having a short width and the other straight part 1b having a short width, and a cross fin type heat exchanger having a single line structure having a single line path A second heat exchanger 2 having a substantially bowl shape in plan view is provided, which includes one straight portion 2a having a long width and the other straight portion 2b having a short width by bending a portion near one end of the first straight portion. And one straight part 1a of the first heat exchanger 1 and one straight part 2a of the second heat exchanger 2 are placed outside the second heat exchanger 2 in the bending direction of the first heat exchanger 1. And the end of the straight portion 2a of the second heat exchanger 2 is connected to the first heat exchanger 1 by the tube plate 14 between the bent portion of the first heat exchanger 1 and the end of the straight portion 2a of the second heat exchanger 2. The heat exchange unit having a substantially U-shaped planar view as a whole is integrated by connecting the end of the straight part 1a of 1 and the vicinity of the bent part of the second heat exchanger 2 with a tube plate 15, respectively. Unit X is configured.

  Further, between the first heat exchanger 1 and the second heat exchanger 2, the fin pitch of the first heat exchanger 1 is made smaller than the fin pitch of the second heat exchanger 2, The heat exchange capacity of the first heat exchanger 1 is set higher than the heat exchange capacity of the second heat exchanger 2. Therefore, the heat exchanging capacity in the heat exchange unit X is the first in which the one straight part 1a of the first heat exchanger 1 and the one straight part 2a of the second heat exchanger 2 are arranged in close proximity to each other. “High capacity” in the heat exchanging part X1, “medium capacity” in the second heat exchanging part X2 composed only of the other straight part 1b of the first heat exchanger 1, and the other of the second heat exchanger 2 In the third heat exchanging part X3 configured only by the straight part 2b, the “small capacity” is set. That is, the heat exchange unit X is composed of three parts having different heat exchange capabilities.

  On the other hand, the relative relationship of the intake air amount from each air intake port 11A, 11B, 11C of the casing 10 is that the front intake port 11A facing in the axial direction of the fan 3 is “large air amount”. On the other hand, the first side surface suction port 11B close to the fan 3 but located on the side of the fan 3 is "medium air volume", and further on the second side surface located on the side of the fan 3 and far from the fan 3. The suction port 11C has a “small air volume”.

  In order to correspond to this air volume distribution, the heat exchange unit X has a “large capacity” first heat exchanging portion X1 in the “large capacity” front suction port 11A and a “medium capacity” second heat. The exchange part X2 is arranged to face the first side suction port 11B with "medium air volume" and the third heat exchange part X3 with "small capacity" faces the second side suction port 11C with "small air volume". .

  As a result, in this outdoor unit Z2, the amount of the suction air volume corresponds to the level of the heat exchange capacity, and high heat exchange efficiency is achieved as a whole.

III: Third Embodiment FIG. 5 shows an outdoor unit Z3 of an air conditioner as a heat source unit according to a third embodiment of the present invention. The outdoor unit Z3 has the same basic configuration as the outdoor unit Z1 of the first embodiment, and is different from the outdoor unit Z1 in the configuration of the heat exchange unit X. Therefore, here, by omitting the description by using the corresponding description of the first embodiment by attaching the same reference numerals to the respective constituent members in FIG. Description will be made focusing on the configuration of the heat exchange unit X.

  The heat exchanging unit X provided in the outdoor unit Z3 of this embodiment has a substantially orthogonal shape near one end in the width direction of a cross fin type heat exchanger having a two-row configuration having two rows of paths before and after in the ventilation direction. The first heat exchanger 1 having a substantially bowl shape in plan view, which includes one straight portion 1a having a long width and the other straight portion 1b having a short width, and two rows having two rows of paths The cross fin type heat exchanger having the configuration has a straight portion 2a having a long width and a straight portion 2b having a short width by bending a portion near one end in the width direction substantially orthogonally. A second heat exchanger 2 of the shape is provided. And one straight part 1a of the first heat exchanger 1 and one straight part 2a of the second heat exchanger 2 are placed outside the second heat exchanger 2 in the bending direction of the first heat exchanger 1. And the end of the straight portion 2a of the second heat exchanger 2 is connected to the first heat exchanger 1 by the tube plate 14 between the bent portion of the first heat exchanger 1 and the end of the straight portion 2a of the second heat exchanger 2. The heat exchange unit having a substantially U-shaped planar view as a whole is integrated by connecting the end of the straight part 1a of 1 and the vicinity of the bent part of the second heat exchanger 2 with a tube plate 15, respectively. Unit X is configured.

  Further, between the first heat exchanger 1 and the second heat exchanger 2, the fin pitch of the first heat exchanger 1 is made smaller than the fin pitch of the second heat exchanger 2, The heat exchange capacity of the first heat exchanger 1 is set higher than the heat exchange capacity of the second heat exchanger 2.

  Therefore, the heat exchanging capacity in the heat exchange unit X is the first in which the one straight part 1a of the first heat exchanger 1 and the one straight part 2a of the second heat exchanger 2 are arranged in close proximity to each other. “High capacity” in the heat exchanging part X1, “medium capacity” in the second heat exchanging part X2 composed only of the other straight part 1b of the first heat exchanger 1, and the other of the second heat exchanger 2 In the third heat exchanging part X3 configured only by the straight part 2b, the “small capacity” is set. That is, the heat exchange unit X is composed of three parts having different heat exchange capabilities.

  On the other hand, the relative relationship of the intake air amount from each air intake port 11A, 11B, 11C of the casing 10 is that the front intake port 11A facing in the axial direction of the fan 3 is “large air amount”. On the other hand, the first side surface suction port 11B close to the fan 3 but located on the side of the fan 3 is "medium air volume", and further on the second side surface located on the side of the fan 3 and far from the fan 3. The suction port 11C has a “small air volume”.

  In order to correspond to this air volume distribution, the heat exchange unit X has a “large capacity” first heat exchanging portion X1 in the “large capacity” front suction port 11A and a “medium capacity” second heat. The exchange part X2 is arranged to face the first side suction port 11B with "medium air volume" and the third heat exchange part X3 with "small capacity" faces the second side suction port 11C with "small air volume". .

  As a result, in this outdoor unit Z3, the amount of intake air corresponds to the level of heat exchange capacity, and high heat exchange efficiency is achieved as a whole.

IV: The first reference example 6, as a heat source unit according to a first reference example of the present invention showing an outdoor unit Z4 of the air conditioner. This outdoor unit Z4 has the same basic configuration as that of the outdoor unit Z1 of the first embodiment, and is different from this in the configuration of the heat exchange unit X. Therefore, here, by omitting the description by using the corresponding description of the first embodiment by assigning the same reference numerals to the respective constituent members in FIG. Description will be made focusing on the configuration of the heat exchange unit X.

The heat exchange unit X provided in the outdoor unit Z4 of this reference example has a substantially orthogonal shape near one end in the width direction of a cross fin type heat exchanger having a two-row configuration having two rows of paths before and after in the ventilation direction. The first heat exchanger 1 having a substantially bowl shape in plan view, which is provided with one straight portion 1a having a long width and the other straight portion 1b having a short width, and a single-row cross having a single-row path The fin-shaped heat exchanger is provided with a central portion 2a having a long width, a straight portion 2b having a short width, and a straight portion 2c having the short width by bending the portions near both ends in the width direction substantially orthogonally in the same direction. The second heat exchanger 2 having a substantially U shape in plan view is provided. Then, the one straight portion 1a and the other straight portion 1b of the first heat exchanger 1 are close to the central portion 2a of the second heat exchanger 2 and the inner side (downstream side in the ventilation direction) of the one straight portion 2b. It arrange | positions in the opposing state, The vicinity of the bending part of the said 1st heat exchanger 1 and the bending part near one straight part 2b of the said 2nd heat exchanger 2 are the tube plates 14, and the said 1st heat exchanger 1 by connecting the end of one straight portion 1a and the vicinity of the bent portion of the second heat exchanger 2 near the other straight portion 2c with a tube plate 15, respectively. The heat exchange unit X having a plan view shape is configured.

  Further, between the first heat exchanger 1 and the second heat exchanger 2, the fin pitch of the first heat exchanger 1 is made smaller than the fin pitch of the second heat exchanger 2, and the Since the first heat exchanger 1 has a two-row configuration and the second heat exchanger 2 has a one-row configuration, the heat exchange capacity of the first heat exchanger 1 is the second heat exchanger 2. It is set higher than the heat exchange capacity.

  Therefore, the heat exchange capacity in the heat exchange unit X is the first heat exchange in which one straight part 1a of the first heat exchanger 1 and the central part 2a of the second heat exchanger 2 are arranged in close proximity to each other. "High capacity" in the part X1, and the second heat exchange part X2 in which the other straight part 1b of the first heat exchanger 1 and the one straight part 2b of the second heat exchanger 2 are arranged in close proximity to each other The third heat exchanging part X3 configured only by the other straight part 2c of the second heat exchanger 2 is set to “small capacity”. That is, the heat exchange unit X is composed of two parts having different heat exchange capabilities.

  On the other hand, the relative relationship of the intake air amount from each air intake port 11A, 11B, 11C of the casing 10 is that the front intake port 11A facing in the axial direction of the fan 3 is “large air amount”. On the other hand, the first side surface suction port 11B close to the fan 3 but located on the side of the fan 3 is "medium air volume", and further on the second side surface located on the side of the fan 3 and far from the fan 3. The suction port 11C has a “small air volume”.

  In the heat exchange unit X, the “large capacity” first heat exchange section X1 is in the “large air volume” front suction port 11A, and the “large capacity” second heat exchange section X2 is “medium air volume”. The small heat capacity third heat exchange portion X3 is disposed at the first side surface suction port 11B of the first side surface suction port 11B and faces the second side surface suction port 11C with a small air volume.

  Therefore, in this outdoor unit Z4, the amount of the suction air volume and the level of the heat exchange capacity substantially correspond to each other, and high heat exchange efficiency is achieved as a whole.

  Further, depending on the path condition of the air introduced from the outside side of the outdoor unit Z4 to the outdoor unit Z4, the suction air amount from the front suction port 11A side and the suction air amount from the first side suction port 11B are substantially equal. In such a case, for example, when the outdoor unit Z4 is installed, the wall near the outside of the front suction port 11A is opposed in close proximity and the suction air volume tends to decrease. On the other hand, when there is no obstacle to ventilation outside the first side surface suction port 11B and the suction air volume tends to increase, and both the suction air volumes are substantially equal, in the outdoor unit Z4 The amount of suction air and the level of heat exchange capacity correspond as much as possible, and higher heat exchange efficiency is achieved as a whole. That is, an outdoor unit having specifications corresponding to the ambient conditions of the installation location can be provided.

V: Second Reference Example FIG. 7 shows an outdoor unit Z5 of an air conditioner as a heat source unit according to a second reference example of the present invention. The outdoor unit Z5 has the same basic configuration as the outdoor unit Z1 of the first embodiment, and is different from the outdoor unit Z1 in the configuration of the heat exchange unit X. Therefore, here, by omitting the explanation by using the corresponding explanation of the first embodiment by attaching the same reference numerals to the constituent members of FIG. Description will be made focusing on the configuration of the heat exchange unit X.

The heat exchange unit X provided in the outdoor unit Z5 of this reference example has a long width by bending a portion near one end in the width direction of a cross fin type heat exchanger having a single row path to a substantially orthogonal shape. A widthwise direction of a first heat exchanger 1 having a substantially bowl shape in plan view having one straight part 1a having a short width and the other straight part 1b having a short width, and a cross fin type heat exchanger having a single line structure having a single line path The portions near both ends are bent substantially orthogonally in the same direction, and have a central portion 2a having a long width, one straight portion 2b having a short width, and the other straight portion 2c. Two heat exchangers 2 are provided. Then, the one straight portion 1a and the other straight portion 1b of the first heat exchanger 1 are close to the central portion 2a of the second heat exchanger 2 and the inner side (downstream side in the ventilation direction) of the one straight portion 2b. It arrange | positions in the opposing state, The vicinity of the bending part of the said 1st heat exchanger 1 and the bending part near one straight part 2b of the said 2nd heat exchanger 2 are the tube plates 14, and the said 1st heat exchanger 1 by connecting the end of one straight portion 1a and the vicinity of the bent portion of the second heat exchanger 2 near the other straight portion 2c with a tube plate 15, respectively. The heat exchange unit X having a plan view shape is configured.

  Further, since the fin pitch of the first heat exchanger 1 is made smaller than the fin pitch of the second heat exchanger 2 between the first heat exchanger 1 and the second heat exchanger 2, The heat exchange capacity of the first heat exchanger 1 is set higher than the heat exchange capacity of the second heat exchanger 2.

  Therefore, the heat exchange capacity in the heat exchange unit X is the first heat exchange in which one straight part 1a of the first heat exchanger 1 and the central part 2a of the second heat exchanger 2 are arranged in close proximity to each other. "High capacity" in the part X1, and the second heat exchange part X2 in which the other straight part 1b of the first heat exchanger 1 and the one straight part 2b of the second heat exchanger 2 are arranged in close proximity to each other The third heat exchanging part X3 configured only by the other straight part 2c of the second heat exchanger 2 is set to “small capacity”. That is, the heat exchange unit X is composed of two parts having different heat exchange capabilities.

  On the other hand, the relative relationship of the intake air amount from each air intake port 11A, 11B, 11C of the casing 10 is that the front intake port 11A facing in the axial direction of the fan 3 is “large air amount”. On the other hand, the first side surface suction port 11B close to the fan 3 but located on the side of the fan 3 is "medium air volume", and further on the second side surface located on the side of the fan 3 and far from the fan 3. The suction port 11C has a “small air volume”.

  In the heat exchange unit X, the “large capacity” first heat exchange section X1 is in the “large air volume” front suction port 11A, and the “large capacity” second heat exchange section X2 is “medium air volume”. The small heat capacity third heat exchange portion X3 is disposed at the first side surface suction port 11B of the first side surface suction port 11B and faces the second side surface suction port 11C with a small air volume.

  Therefore, in this outdoor unit Z5, the amount of the intake air amount and the level of the heat exchange capacity substantially correspond to each other, and high heat exchange efficiency is achieved as a whole.

  Further, depending on the path condition of the air introduced from the outside side of the outdoor unit Z5 to the outdoor unit Z5, the suction air amount from the front suction port 11A side and the suction air amount from the first side suction port 11B are substantially equal. In such a case, for example, when the outdoor unit Z5 is installed, the wall near the outside of the front suction port 11A is opposed in close proximity, and the suction air volume tends to decrease. On the other hand, when there is no obstacle to ventilation outside the first side surface suction port 11B and the suction air volume tends to increase, and both the suction air volumes are substantially equal, in the outdoor unit Z5 The amount of suction air and the level of heat exchange capacity correspond as much as possible, and higher heat exchange efficiency is achieved as a whole. That is, an outdoor unit having specifications corresponding to the ambient conditions of the installation location can be provided.

VI: Third Reference Example FIG. 8 shows an outdoor unit Z6 of an air conditioner as a heat source unit according to a third reference example of the present invention. The outdoor unit Z6 has the same basic configuration as the outdoor unit Z1 of the first embodiment, and is different from the outdoor unit Z1 in the configuration of the heat exchange unit X. Therefore, here, by omitting the description by using the corresponding description of the first embodiment by assigning the same reference numerals to the respective constituent members in FIG. Description will be made focusing on the configuration of the heat exchange unit X.

The heat exchanging unit X provided in the outdoor unit Z6 of this reference example is formed by bending the portions close to both ends in the width direction of a cross fin type heat exchanger having a two-row configuration having two rows in the ventilation direction. A first U-shaped first heat exchanger 1 having a central portion 1a having a long width, one straight portion 1b having a short width, and the other straight portion 1c, and a cross-fin heat in a single row configuration. The 2nd heat exchanger 2 formed by forming an exchanger in a straight shape is provided. And the vicinity of one bending part of the center part 1a of the said 1st heat exchanger 1 and the end of the said 2nd heat exchanger 2 are the tube sheets 14, and the other of the center part 1a of the said 1st heat exchanger 1 is used. The heat exchange unit X having a substantially U-shaped planar view as a whole is configured by connecting the vicinity of the bent portion and the other end of the second heat exchanger 2 with the tube plate 15. Yes.

  Further, between the first heat exchanger 1 and the second heat exchanger 2, the fin pitch of the first heat exchanger 1 is made smaller than the fin pitch of the second heat exchanger 2, and the Since the first heat exchanger 1 has a two-row configuration and the second heat exchanger 2 has a one-row configuration, the heat exchange capacity of the first heat exchanger 1 is the second heat exchanger 2. It is set higher than the heat exchange capacity.

  Therefore, the heat exchanging capacity in the heat exchanging unit X is “high capacity” in the first heat exchanging part X1 in which the central part 1a of the first heat exchanger 1 and the second heat exchanger 2 are arranged in close proximity to each other. The second heat exchanging part X2 and the third heat exchanging part X3 each constituted by one straight part 1b and the other straight part 1c of the first heat exchanger 1 are both “small capacity”. That is, the heat exchange unit X is composed of two parts having different heat exchange capabilities.

  On the other hand, the relative relationship of the intake air amount from each air intake port 11A, 11B, 11C of the casing 10 is that the front intake port 11A facing in the axial direction of the fan 3 is “large air amount”. On the other hand, the first side surface suction port 11B close to the fan 3 but located on the side of the fan 3 is "medium air volume", and further on the second side surface located on the side of the fan 3 and far from the fan 3. The suction port 11C has a “small air volume”.

  In the heat exchange unit X, the “large capacity” first heat exchange section X1 is in the “large capacity” front suction port 11A, and both the “small capacity” second heat exchange section X2 and the third heat exchange section. The portion X3 is disposed so as to face the first side surface inlet port 11B and the second side surface inlet port 11C of “small air volume”, respectively.

  Therefore, in this outdoor unit Z6, the amount of the suction air volume and the level of the heat exchange capacity substantially correspond to each other, and high heat exchange efficiency is achieved as a whole.

  Further, depending on the path conditions of the air introduced from the outside side of the outdoor unit Z6 to the outdoor unit Z6, the amount of suction air from the first side surface suction port 11B and the amount of suction air from the second side surface suction port 11C side are For example, when the outdoor unit Z6 is installed, there is a wall or the like that obstructs ventilation in the vicinity of the outside of the first side suction port 11B, and the first side suction port 11B In the case where the suction air volume from both of the two side suction ports 11C is closer to the fan 3 than the second side suction port 11C, the heat exchange is performed with some of the suction air volume in the outdoor unit Z6. The level of capacity corresponds as much as possible, and higher heat exchange efficiency is achieved as a whole. That is, an outdoor unit having specifications corresponding to the ambient conditions of the installation location can be provided.

VII: Fourth Reference Example FIG. 9 shows an outdoor unit Z7 of an air conditioner as a heat source unit according to a fourth reference example of the present invention. The outdoor unit Z7 has the same basic configuration as the outdoor unit Z1 of the first embodiment, and is different from the outdoor unit Z1 in the configuration of the heat exchange unit X. Therefore, here, by omitting the description by using the corresponding description of the first embodiment by assigning the same reference numerals to the respective constituent members in FIG. Description will be made focusing on the configuration of the heat exchange unit X.

The heat exchanging unit X provided in the outdoor unit Z7 of this reference example has a long width by bending both end portions in the width direction of the cross fin type heat exchanger having a single row path in a substantially orthogonal shape. A first U-shaped first heat exchanger 1 having a central portion 1a having a short width, one straight portion 1b having a short width, and the other straight portion 1c, and a cross-fin heat exchanger in a single row are formed in a straight line. The 2nd heat exchanger 2 formed in is provided. And the vicinity of one bending part of the center part 1a of the said 1st heat exchanger 1 and the end of the said 2nd heat exchanger 2 are the tube sheets 14, and the other of the center part 1a of the said 1st heat exchanger 1 is used. The heat exchanger unit X is configured by integrating the vicinity of the bent portion and the other end of the second heat exchanger 2 with the tube plate 15.

  Further, since the fin pitch of the first heat exchanger 1 is made smaller than the fin pitch of the second heat exchanger 2 between the first heat exchanger 1 and the second heat exchanger 2, The heat exchange capacity of the first heat exchanger 1 is set higher than the heat exchange capacity of the second heat exchanger 2.

  Therefore, the heat exchanging capacity in the heat exchanging unit X is “high capacity” in the first heat exchanging part X1 in which the central part 1a of the first heat exchanger 1 and the second heat exchanger 2 are arranged in close proximity to each other. The second heat exchanging part X2 and the third heat exchanging part X3 each constituted by one straight part 1b and the other straight part 1c of the first heat exchanger 1 are both “small capacity”. That is, the heat exchange unit X is composed of two parts having different heat exchange capabilities.

  On the other hand, the relative relationship of the intake air amount from each air intake port 11A, 11B, 11C of the casing 10 is that the front intake port 11A facing in the axial direction of the fan 3 is “large air amount”. On the other hand, the first side surface suction port 11B close to the fan 3 but located on the side of the fan 3 is "medium air volume", and further on the second side surface located on the side of the fan 3 and far from the fan 3. The suction port 11C has a “small air volume”.

  In the heat exchange unit X, the “large capacity” first heat exchange section X1 is in the “large capacity” front suction port 11A, and both the “small capacity” second heat exchange section X2 and the third heat exchange section. The portion X3 is disposed so as to face the first side surface inlet port 11B and the second side surface inlet port 11C of “small air volume”, respectively.

  Therefore, in this outdoor unit Z7, the amount of the suction air volume and the level of the heat exchange capacity substantially correspond to each other, and high heat exchange efficiency is achieved as a whole.

  Further, depending on the path condition of the air introduced from the outside side of the outdoor unit Z7 to the outdoor unit Z7, the suction air volume from the first side surface suction port 11B side and the suction air volume from the second side surface suction port 11C side are For example, when the outdoor unit Z7 is installed, there is a wall surface or the like that obstructs ventilation in the vicinity of the outside of the first side suction port 11B, and the first side suction port 11B When the suction air volume from both of them is substantially equal even though the fan 3 is located closer to the fan 3 than the second side surface suction port 11C, heat exchange with some of the suction air volume in the outdoor unit Z7. The level of capacity corresponds as much as possible, and higher heat exchange efficiency is achieved as a whole. That is, an outdoor unit having specifications corresponding to the ambient conditions of the installation location can be provided.

VIII: Fourth Reference Example FIG. 10 shows an outdoor unit Z8 of an air conditioner as a heat source unit according to a fourth reference example of the present invention. This outdoor unit Z8 has the same basic configuration as that of the outdoor unit Z1 of the first embodiment, and is different from this in the configuration of the heat exchange unit X. Therefore, here, by omitting the explanation by using the corresponding explanation of the first embodiment by attaching the same reference numerals to the constituent members of FIG. 10 corresponding to the constituent members of FIG. Description will be made focusing on the configuration of the heat exchange unit X.

The heat exchange unit X provided in the outdoor unit Z8 of this reference example is substantially orthogonal to both end portions in the width direction of a cross fin type heat exchanger having a two-row configuration having two rows of paths in front and back in the ventilation direction. A first heat exchanger 1 having a substantially U shape in plan view, which is provided with a central portion 1a having a long width, one straight portion 1b having a short width, and the other straight portion 1c, and a two-row configuration. A second heat exchanger 2 formed by forming a cross fin heat exchanger in a straight shape is provided. And the vicinity of one bending part of the center part 1a of the said 1st heat exchanger 1 and the end of the said 2nd heat exchanger 2 are the tube sheets 14, and the other of the center part 1a of the said 1st heat exchanger 1 is used. The heat exchange unit X having a substantially U-shaped planar view as a whole is configured by connecting the vicinity of the bent portion and the other end of the second heat exchanger 2 with the tube plate 15. Yes.

  Further, since the fin pitch of the first heat exchanger 1 is made smaller than the fin pitch of the second heat exchanger 2 between the first heat exchanger 1 and the second heat exchanger 2, The heat exchange capacity of the first heat exchanger 1 is set higher than the heat exchange capacity of the second heat exchanger 2.

  Therefore, the heat exchanging capacity in the heat exchanging unit X is “high capacity” in the first heat exchanging part X1 in which the central part 1a of the first heat exchanger 1 and the second heat exchanger 2 are arranged in close proximity to each other. The second heat exchanging part X2 and the third heat exchanging part X3 each constituted by one straight part 1b and the other straight part 1c of the first heat exchanger 1 are both “small capacity”. That is, the heat exchange unit X is composed of two parts having different heat exchange capabilities.

  On the other hand, the relative relationship of the intake air amount from each air intake port 11A, 11B, 11C of the casing 10 is that the front intake port 11A facing in the axial direction of the fan 3 is “large air amount”. On the other hand, the first side surface suction port 11B close to the fan 3 but located on the side of the fan 3 is "medium air volume", and further on the second side surface located on the side of the fan 3 and far from the fan 3. The suction port 11C has a “small air volume”.

  In the heat exchange unit X, the “large capacity” first heat exchange section X1 is in the “large capacity” front suction port 11A, and both the “small capacity” second heat exchange section X2 and the third heat exchange section. The portion X3 is disposed so as to face the first side surface inlet port 11B and the second side surface inlet port 11C of “small air volume”, respectively.

  Therefore, in this outdoor unit Z8, the amount of the suction air volume and the level of the heat exchange capacity substantially correspond to each other, and high heat exchange efficiency is achieved as a whole.

  Further, depending on the path condition of the air introduced from the outside side of the outdoor unit Z8 to the outdoor unit Z8, the suction air volume from the first side suction port 11B side and the suction air volume from the second side suction port 11C side are For example, when the outdoor unit Z7 is installed, there is a wall surface or the like that obstructs ventilation in the vicinity of the outside of the first side suction port 11B, and the first side suction port 11B When the suction air volume from both of them is substantially equal to the second side suction port 11C even though it is closer to the fan 3, the heat exchange with some of the suction air volume in the outdoor unit Z8. The level of capacity corresponds as much as possible, and higher heat exchange efficiency is achieved as a whole. That is, an outdoor unit having specifications corresponding to the ambient conditions of the installation location can be provided.

IX: Fifth Reference Example FIG. 11 shows an outdoor unit Z9 of an air conditioner as a heat source unit according to a fifth reference example of the present invention. The outdoor unit Z9 has the same basic configuration as that of the outdoor unit Z1 of the first embodiment, and is different from this in the configuration of the heat exchange unit X. Therefore, here, by omitting the description by using the corresponding description of the first embodiment by assigning the same reference numerals to the respective constituent members in FIG. Description will be made focusing on the configuration of the heat exchange unit X.

The heat exchange unit X provided in the outdoor unit Z9 of this reference example has a long length by bending a portion close to one end of a cross fin type heat exchanger of a two-row configuration having two rows of paths in the ventilation direction. The first heat exchanger 1 having a substantially bowl shape in plan view provided with a central portion 1a having a width and a straight portion 1b having a short width, and a cross-fin-shaped heat exchanger having a single row configuration as a whole are curved at one end side. As a second heat exchanger 2 having a substantially straight planar shape. And the said 2nd heat exchanger 2 is arrange | positioned in the edge part of one straight part 1a of the said 1st heat exchanger 1 so that it may be substantially orthogonal to this, and one end of the said 1st heat exchanger 1 And the one end of the second heat exchanger 2 are connected by a tube plate 15 to constitute the heat exchange unit X having a substantially U-shaped planar view as a whole.

  Further, between the first heat exchanger 1 and the second heat exchanger 2, the fin pitch of the first heat exchanger 1 is made smaller than the fin pitch of the second heat exchanger 2, and the Since the first heat exchanger 1 has a two-row configuration and the second heat exchanger 2 has a one-row configuration, the heat exchange capacity of the first heat exchanger 1 is the second heat exchanger 2. It is set higher than the heat exchange capacity.

  Therefore, the heat exchange capacity in the heat exchange unit X is the second heat exchange composed of the first heat exchange part X1 composed of one straight part 1a of the first heat exchanger 1 and the other direct part 1b. The part X2 is “high capacity”, and the third heat exchange part X3 configured by the second heat exchanger 2 is both “small capacity”. That is, the heat exchange unit X is composed of two parts having different heat exchange capabilities.

  On the other hand, the relative relationship of the intake air amount from each air intake port 11A, 11B, 11C of the casing 10 is that the front intake port 11A facing in the axial direction of the fan 3 is “large air amount”. On the other hand, the first side surface suction port 11B close to the fan 3 but located on the side of the fan 3 is "medium air volume", and further on the second side surface located on the side of the fan 3 and far from the fan 3. The suction port 11C has a “small air volume”.

  In the heat exchange unit X, the “large capacity” first heat exchange part X1 and the second heat exchange part X2 are respectively connected to the front air inlet 11A and the first side air inlet 11B having “large air volume”. The “small capacity” third heat exchanging portion X3 is arranged facing the second side suction port 11C of “small air volume”.

  Accordingly, in the outdoor unit Z9, the amount of the suction air volume and the level of the heat exchange capacity substantially correspond to each other, and high heat exchange efficiency is achieved as a whole.

  Further, depending on the path condition of the air introduced from the outside side of the outdoor unit Z9 to the outdoor unit Z9, the suction air amount from the front suction port 11A side and the suction air amount from the first side suction port 11B are substantially equal. In such a case, for example, when the outdoor unit Z9 is installed, the wall near the outside of the front suction port 11A is opposed in close proximity and the suction air volume tends to decrease. On the other hand, when there is no obstacle to ventilation outside the first side surface suction port 11B and the suction air volume tends to increase, and both the suction air volumes are substantially equal, in the outdoor unit Z9 The amount of suction air and the level of heat exchange capacity correspond as much as possible, and higher heat exchange efficiency is achieved as a whole. That is, an outdoor unit having specifications corresponding to the ambient conditions of the installation location can be provided.

DESCRIPTION OF SYMBOLS 1 ... 1st heat exchanger 2 ... 2nd heat exchanger 3 ... Fan 4 ... Motor 5 ... Impeller 6 ... Compressor 7 ... Header 8 ... Accumulator 10 ... Casing 11 ... Air Suction port 12 ..Air outlet 14 ..Tube plate 15 ..Tube plate 16 ..Heat transfer tube 17 ..Heat transfer tube 20 ..Piping gap

Claims (5)

Front side suction port (11A) on front side (1a), first side side suction port (11B) on one side surface (1b), second side side suction port (11C) on the other side surface (1c), rear side (1d) ) to a heat source unit configured by arranging the heat exchange unit (X) and a fan (3) to the casing (10) in the air outlet (12) is provided,
The heat exchange unit (X) includes a first heat exchanger (1) having a generally bowl shape in a plan view and arranged in one or two rows arranged in one or two rows before and after in the direction of ventilation of the heat transfer tubes. The arranged second heat exchanger (2) having a substantially bowl shape in plan view is connected to one straight part (1a) of the first heat exchanger (1) and one straight part of the second heat exchanger (2). (2a) and the other side of the second heat exchanger (2) that is disposed in the air flow direction at a position facing the front suction port (11A) and that faces the first side suction port (11B). The plurality of heat exchangers (1), (2) are configured to have a substantially U-shape in plan view as a whole by arranging the straight part (2b) so as to face the heat exchanger unit width direction. The one straight part (1a) of the first heat exchanger (1) and the one straight part (2a) of the second heat exchanger (2) are arranged in close proximity to each other. The “large capacity” first heat exchange section (X1) and the “medium capacity” second heat exchange section (X2) consisting only of the other straight section (1b) of the first heat exchanger (1) is composed third heat exchanging portion of the second heat exchanger the other straight portion of the (2) consisting of only (2b) "small capacity" and (X3) by Rutotomoni, inside of the heat exchange unit (X) The fan (3) has its axial line orthogonal to the front inlet (11A) and the air outlet (12), and has a heat exchange capability more than the center in the width direction of the heat exchange unit (X). A heat source unit characterized in that the heat source unit is deviated on the higher side . Oite to claim 1,
The heat source unit, wherein the compressor (6) is arranged near the end of the heat exchange unit (X) having a lower heat exchange capacity. In claim 1 or 2,
The first heat exchanger (1) and the second heat exchanger (2) of the heat exchange unit (X) are connected to the heat exchangers (1) and (2) when the heat exchangers (1) and (2) perform a condensing action. Of the exchangers (1) and (2), the heat exchanger (1 or 2) having a high heat exchange capacity is on the refrigerant upstream side, and the heat exchanger (2 or 1) having a low heat exchange capacity is on the refrigerant downstream side, respectively. Pipe connection so that the flow direction of the refrigerant in the heat exchanger (1 or 2) having a high heat exchange capacity is opposite to the flow direction of the refrigerant in the heat exchanger (2 or 1) having a low heat exchange capacity A heat source unit characterized by that. In claim 1, 2 or 3,
Of the first heat exchanger (1) and the second heat exchanger (2), the fin pitch of the heat exchanger (1 or 2) with a large amount of suction air is used as the heat exchanger (2 or 1) with a small amount of suction air. Heat source unit characterized by being set smaller than the fin pitch of Oite to claim 1,
Of the first heat exchanger (1) and the second heat exchanger (2), the height dimension of the heat exchanger (1 or 2) located on the upstream side in the ventilation direction is the heat exchange located on the downstream side in the ventilation direction. Set smaller than the height of the vessel (2 or 1),
A piping space (20) is provided between the lower end of the heat exchanger (1 or 2) located on the upstream side in the ventilation direction and the lower end of the heat exchanger (2 or 1) located on the downstream side in the ventilation direction. Heat source unit.

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