CN1154805C - An outdoor unit of an air conditioner - Google Patents

Abstract

An outdoor unit of an air conditioner, which comprises a vertical compressor (3) and whose housing (1) is, nonetheless, small because the components (including a heat exchanger (2)) are arranged in the housing (1) in a specific manner. In the outdoor unit, the vertical compressor (3), fan unit (4), and heat exchanger (2) are arranged in one straight line. The housing (1) can therefore have a small width, occupying a small installation space. Further, the operating efficiency of the heat exchanger (2) is enhanced, whereby the vertical compressor (3) and the motor (4a) of the fan unit (4) can be cooled with high efficiency.

Description

An outdoor unit of an air conditioner

Technical field

The present invention relates to an air conditioner comprising an indoor unit and an outdoor unit, especially an improvement in the arrangement of components of the outdoor unit.

Background technique

29A and 29B show an outdoor unit of an air conditioner. The outdoor unit has a generally vertical compressor (ie, a compressor in which the compression mechanism has a vertical axis such that the height dimension is greater than the width dimension). 30A and 30B show an outdoor unit of an air conditioner. The outdoor unit has a generally horizontal compressor (ie, a compressor in which the compression mechanism has a horizontal axis such that its width dimension is greater than its height dimension).

First, the outdoor unit shown in Figs. 29A and 29B will be described. This outdoor unit has a main body or housing 101 . In the housing 101, a partition 102 divides the inner space into two chambers, a left chamber and a right chamber. The left chamber serves as a heat exchange chamber 103 . The right chamber serves as a machine room 106 . An L-shaped heat exchanger 104 and a fan unit are disposed in the heat exchange chamber 103 . A compressor 107 , a gas-liquid separator 108 , an electrical component box 109 and the like are arranged in the machine room 106 .

The outdoor unit shown in Figs. 30A and 30B will now be described. This outdoor unit has a main body or housing 110 . In the housing 110 , a partition 111 divides the inner space into two chambers, namely, an upper chamber 112 and a lower chamber 115 . In the upper chamber 112 are provided a fan unit 113 and a heat exchanger 114 . The fan unit 113 is located in the middle of the upper chamber 112 . Heat exchanger 114 includes three sections. The first part of the heat exchanger 114 is located above the fan 113 . The second part and the third part are disposed on left and right sides of the fan unit 113, respectively.

In the lower chamber 115 a horizontal compressor is arranged. No openings are machined into the walls of the housing 110 defining the lower chamber 115 . In contrast, holes 118 and 119 are machined into the wall defining the upper chamber 112 . The upper chamber serves as a heat exchange chamber 103 . The first hole 118 exposes the fan 117 of the fan unit 113 . The second hole 119 exposes the heat exchanger 114 .

As described above, the outdoor unit shown in FIGS. 29A and 29B is equipped with a vertical compressor 107 and has two chambers on the left and right sides of the partition 102 , namely, the heat exchange chamber 103 and the machine chamber 106 . Therefore, its casing 101 extends in the horizontal direction, which must occupy a large installation space.

The outdoor unit shown in Figures 30A and 30B is not as wide as the outdoor unit shown in Figures 29A and 29B. This is because the partition 111 divides the inner space of the housing 110 into an upper chamber 112 and a lower chamber 115 . However, this also does not allow a significant reduction in the width of the housing 110, since the lower chamber contains various pipes (not shown), such as an outlet pipe and an inlet pipe.

Disclosure of the present invention

An object of the present invention is to provide an outdoor unit of an air conditioner, comprising a vertical compressor, whose casing is nevertheless small, because the components inside the casing, including the heat exchanger, are arranged in a special way .

In this outdoor unit, a compressor, a fan unit and a heat exchanger are arranged in a straight line. In this way, the width of the housing is relatively small, occupying a small installation space. Furthermore, the operating efficiency of the heat exchanger is enhanced because the motors of the vertical compressor and fan units are efficiently cooled.

Another object of the present invention is to provide an outdoor unit of an air conditioner whose housing is small due to the special arrangement of its components (including a heat exchanger) relative to the housing.

In this outdoor unit, a compressor, a heat exchanger, and a fan unit are arranged in that order upstream from an airflow generated by the fan unit. Therefore, the width of the housing can be small, occupying a small installation space. Furthermore, the operating efficiency of the heat exchanger is improved because the motors of the vertical compressor and fan units can be cooled efficiently.

A brief description of the drawings

1 is a plan view of an outdoor unit of an air conditioner according to a first embodiment of the present invention;

Fig. 2 is a plan view of the outdoor unit of the air conditioner according to the second embodiment of the present invention;

Fig. 3 is a plan view of the outdoor unit of the air conditioner according to the third embodiment of the present invention;

4 is a perspective view of an outdoor unit of an air conditioner according to a fourth embodiment of the present invention;

5A is a plan view of an outdoor unit of an air conditioner according to a fifth embodiment of the present invention;

Figure 5B is a side view of the outdoor unit shown in Figure 5A;

6A is a plan view of an outdoor unit of an air conditioner according to a sixth embodiment of the present invention;

Fig. 6B is a cross-sectional view of the outdoor unit shown in Fig. 6A;

7 is a sectional view of an outdoor unit of an air conditioner according to a seventh embodiment of the present invention;

8A is a perspective view of a fan support plate installed in an eighth embodiment of the present invention;

Fig. 8B is a front view of the fan support plate shown in Fig. 8A;

Fig. 9 is a perspective view of the inverter box fixed to the fan support plate in the ninth embodiment of the present invention;

10 is a front view of a fan support plate fixed to a tenth embodiment of the present invention;

11 is a plan view of an outdoor unit of an air conditioner according to an eleventh embodiment of the present invention;

12 is a plan view of an outdoor unit of an air conditioner according to a twelfth embodiment of the present invention;

13 is a plan view of an outdoor unit of an air conditioner according to a thirteenth embodiment of the present invention;

14 is a plan view of an outdoor unit of an air conditioner according to a fourteenth embodiment of the present invention;

15A is a plan view of an outdoor unit of an air conditioner according to a fifteenth embodiment of the present invention;

Figure 15B is a side view of the outdoor unit shown in Figure 15A;

16 is a plan view of an outdoor unit of an air conditioner according to a sixteenth embodiment of the present invention;

17 is a plan view of an outdoor unit of an air conditioner according to a seventeenth embodiment of the present invention;

18A and 18B are diagrams showing the positional relationship between fins and heat exchanger pipes installed in a conventional outdoor unit;

18C and 18D are diagrams showing the positional relationship between fins and heat exchanger pipes installed in an outdoor unit according to an eighteenth embodiment of the present invention;

19 is a vertical sectional view of an outdoor unit of an air conditioner according to a nineteenth embodiment of the present invention;

20A is a vertical sectional view of an outdoor unit of an air conditioner according to a twentieth embodiment of the present invention;

Figure 20B is a perspective view of the outdoor unit shown in Figure 20A;

FIG. 21 is a perspective view of a compressor housing provided in a twenty-first embodiment of the present invention;

22A and 22B are perspective views of an outdoor unit of an air conditioner according to a twenty-second embodiment of the present invention, showing different conditions of the outdoor unit, respectively;

23A is a sectional view of a compressor housing incorporated in a twenty-third embodiment of the present invention;

Figure 23B is a perspective view of the compressor housing shown in Figure 23A;

24 is a plan view of an outdoor unit of an air conditioner according to a twenty-fourth embodiment of the present invention;

25 is a plan view of an outdoor unit of an air conditioner according to a twenty-fifth embodiment of the present invention;

26 is a plan view of an outdoor unit of an air conditioner according to a twenty-sixth embodiment of the present invention;

27A is a plan view of an outdoor unit of an air conditioner according to a twenty-seventh embodiment of the present invention;

Figure 27B is a perspective view of the outdoor unit shown in Figure 27A;

28 is a plan view of an outdoor unit of an air conditioner according to a twenty-eighth embodiment of the present invention;

Fig. 29A is a sectional view of the outdoor unit of a common air conditioner;

Fig. 29B is a plan view of the common outdoor unit shown in Fig. 29A;

Fig. 30A is a sectional view of another common outdoor unit;

Fig. 30B is a plan view of the common outdoor unit shown in Fig. 30A;

Fig. 30C is a perspective view of the common outdoor unit shown in Fig. 30A,

The best mode for implementing the present invention

Embodiments of the present invention are described below with reference to the drawings.

Referring first to FIG. 1, an outdoor unit according to a first embodiment of the present invention will be described. The outdoor unit has a main body or housing 1 . Seen from above, the housing is rectangular. The outdoor unit includes a heat exchanger 2 , a vertical compressor 3 and a fan unit 4 . A heat exchanger 2 , a vertical compressor 3 and a fan 4 are arranged in the casing 1 . (Compressor 3 has a compression mechanism that has a vertical axis, so the height dimension is greater than the width dimension.)

Housing 1 has an axis 5 . Its left and right halves are symmetrical about the axis 5 . The heat exchanger 2 , the vertical compressor 3 and the fan unit 4 are arranged along the axis 5 of the housing 1 . The axes of the heat exchanger 2 , the vertical compressor 3 and the fan unit 4 are all substantially aligned with the axis 5 of the housing 1 . The respective left and right halves of these components are therefore symmetrical about the axis 5 of the housing 1 .

Figure 1 is a plan view of this outdoor unit. As shown in FIG. 1, the housing 1 has a front wall 1a, a rear wall 1b and side walls 1c. When this outdoor unit is installed, the rear wall 1b is spaced a predetermined distance from, for example, an outer wall of a casing. The front wall 1a, the rear wall 1b and the side wall 1c have holes (not shown). When the fan unit is in operation, air is sucked into the housing 1 through the holes machined in the rear wall 1b and side wall 1c, and sent out from the housing 1 through the holes machined in the front wall 1a.

The heat exchanger 2, the vertical compressor 3, and the fan unit 4 are distributed in the stated order from the upstream side of the airflow generated by the fan unit 4. Thus, the holes made in the rear wall 1b and side wall 1c opposite to the heat exchanger 2 function as inlet holes, while the holes made in the front wall 1a opposite to the fan unit 4 serve as outlet holes.

The heat exchanger 2 is substantially U-shaped, comprising a long part 2a and two short parts 2b. The long portion 2a is opposed to the rear wall 1b of the housing, and the short portion 2b is opposed to the side walls 1c, respectively. In other words, the long portion 2a is located between the rear wall 1a and the vertical compressor 3, and the short portion 2b is located between the fan unit 4 and the side wall 1c. Pipes (not shown, ie, inlet and outlet pipes) connected to the heat exchanger 2 and refrigeration cycle components of the indoor unit (ie, the heat exchanger) are connected to the vertical compressor 3 . These lines are arranged in the space defined by the heat exchanger 2 , the vertical compressor 3 and the fan unit 4 . There is no extra space inside the housing 1 . This means that the available space within the housing 1 is used.

The fan unit 4 includes a fan motor 4a and a blade fan 4b (hereinafter referred to as "fan"). The fan 4b is fixed on the shaft of the fan motor 4a. The fan 4b is located upstream of the air flow, while the fan motor 4a is arranged downstream thereof. The fan 4b is located between the short sections 2b of the heat exchanger 2 . Thus, one short portion 2b is located between the fan 4b and one side wall 1c and the other short portion 2b is between the fan 4b and the other side wall 1c.

In operation, the vertical compressor 3 is driven to compress the refrigerant. The compressed refrigerant circulates in the refrigeration circuit including the heat exchanger 2 . Thus, the outdoor unit operates to air-condition the room in which the indoor unit is installed.

When the compressor 3 is driven and the refrigerant circulates in the refrigeration circuit, the fan unit 4 is also driven to draw air into the casing 1 through the inflow holes made in the rear wall 1b and the side wall 1c. Air flows into the housing 1 and passes through the heat exchanger 2 . The heat exchanger 2 performs heat exchange between air and refrigerant. Part of the air contacts the compressor 3 to cool the compressor. Then, the fan unit 4 discharges the air out of the casing 1 through the outflow holes made in the front wall 1a.

In the above structure, as long as the diameter of the fan 4b of the fan unit 4 is determined, an appropriate width of the casing 1 can be determined. Neither the compressor 3 nor the lines limit the width of the housing 1 at all. In this way, the width of the casing 1 can be reduced and the installation space of the outdoor unit can be reduced.

In addition, the housing 1 is rectangular when viewed from above, and is very simple in structure.

Since the heat exchanger 2 , the vertical compressor 3 and the fan unit 4 are arranged along the axis 5 of the casing 1 , their axes are all substantially aligned with the axis 5 , so their respective left and right halves are symmetrical to the axis 5 . As a result, this outdoor unit is well balanced in weight and holds up nicely when moving it from place to place.

Moreover, since the heat exchanger 2 is located at the upstream end of the air flow, the air contacts the heat exchanger 2 as soon as it is sucked into the housing 1 through the inlet. This means that the heat exchanger 2 works efficiently.

An outdoor unit according to a second embodiment of the present invention will be described below with reference to FIG. 2 . The second embodiment is otherwise the same as the first embodiment except for the shapes of the casing 1A and the heat exchanger 2A. As in the first embodiment, the heat exchanger 2A, the vertical compressor 3 and the fan unit 4 are arranged along the axis 5 of the casing 1A, and the axes of these components are aligned with the axis 5 . Also, the air flows in the same direction as in the first embodiment in the housing 1A, and the inflow holes and outflow holes all formed in the wall of the housing 1A are in the same positional relationship as in the first embodiment. Therefore, in view of these structural features, the second embodiment obtains the same advantages as those of the first embodiment.

The rear wall of the casing 1A is curved and includes a flat central portion 1d and left and right inclined side portions 1e. The central portion 1d is parallel to the front wall 1a. The left and right side walls 1e are inclined toward the side wall 1c, respectively. Although the casing 1A has the same depth as the casing 1 shown in FIG. 1, its rear wall has inclined left and right portions.

The heat exchanger 2A is substantially U-shaped, but its long portion 2c is arc-shaped with a predetermined radius of curvature. The long portion 2c extends substantially along the central portion 1d and side portions 1e of the rear wall of the housing 1A.

Since the rear wall of the housing 1A is curved as described above, the inflow hole made in the side portion 1e is not closed when the outdoor unit is installed with the central portion 1d in contact with the outer wall 6 of the housing. Therefore, air can be smoothly sucked into the housing 1A not only through the inflow holes formed in the side walls 1c of the housing 1A but also through the inflow holes formed in the side portions 1e.

In other words, the outdoor unit shown in Fig. 2 may be mounted in contact with the outer wall 6 of the enclosure. This means a reduction in the installation space of the outdoor unit. Furthermore, the housing 1A does not appear to be as deep as it actually is because its rear wall has side portions 1e that slope from a flat central portion 1d to side walls 1c.

An outdoor unit according to a third embodiment of the present invention will now be described with reference to FIG. 3 . The second embodiment is the same as the first embodiment except for the shapes of the casing 1A and the heat exchanger 2A. Therefore, the third embodiment obtains the advantages of the first embodiment.

The casing 1B has the same depth as the casing 1 in the first embodiment. The rear wall of the housing 1B is curved and includes a flat central portion 1f, two flat side portions 1g and two inclined portions. These two inclined parts connect the central part 1f with the flat side parts 1g. The central portion 1d and the side portions 1g are parallel to the front wall 1a. Although the casing 1A has the same depth as the casing 1 shown in FIG. 1 , its rear wall has inclined left and right portions. Such an outdoor unit can be installed with the central part 1f in contact with the outer wall 6 of the enclosure. As long as the outdoor unit is thus installed, the side wall 1g extends parallel to the outer wall 6 and is spaced a predetermined distance therefrom.

As in the first embodiment, the heat exchanger 2B has a straight short portion 2b extending along the side wall 1c of the casing 1B. The long portion 2d of the heat exchanger 2B includes curved ends and a U-shaped central portion connected to the curved ends. Therefore, the heat exchanger 2B is M-shaped as a whole.

Since the rear wall of the housing 1B is curved as described above, the side portions 1g of the rear wall remain spaced apart from the outer wall 6 of the housing after the outdoor unit is installed with the central portion 1f in contact with the outer wall 6 . Consequently, the inflow openings formed on both sides 1g are not closed. In this way, air can be smoothly sucked into the housing 1B not only through the inflow holes formed on the side walls 1c of the housing 1B, but also through the inflow holes formed on the side portions 1e.

Furthermore, since the heat exchanger 2B has a shape similar to the letter M, it can be longer than the heat exchanger 2 shown in FIG. 1 and the heat exchanger 2A shown in FIG. 2 . Therefore, heat exchanger 2B can operate more efficiently than heat exchangers 2 and 2A.

Fig. 4 shows an outdoor unit according to a fourth embodiment of the present invention. The components contained in the housing are the same as those of the third embodiment shown in FIG. 3 . Also, their arrangement is exactly the same as that of the third embodiment.

The fourth embodiment differs from the third embodiment in that a housing 1C has a semi-cylindrical 1h formed on the middle of the rear wall. Column 1h represents a surface curved with a predetermined radius of curvature. The outdoor unit may be installed such that the column 1h is in contact with the outer wall of an enclosure. In this case, the column 1h only contacts the outer wall with its top end, and the other part of the column 1h is spaced from the outer wall of the housing. These parts of the column 1h are provided with inlet holes 7 through which air can be sucked into the housing 1C. Thus, a large amount of air can flow into the casing 1C, thereby enhancing the efficiency of the heat exchanger in the casing 1C.

An outdoor unit of a fifth embodiment of the present invention will now be described with reference to FIGS. 5A and 5B. The fifth embodiment is the same as the third embodiment ( FIG. 3 ) in the structure of the casing 1B and the heat exchanger 2B. Also, the vertical compressor 3, the heat exchanger 2B, and the fan unit 4 can be arranged in the same manner as in the third embodiment. Therefore, the fifth embodiment obtains the advantages of the third embodiment.

As shown in FIG. 5B, the box 20 is mounted on the top of the casing 1B. Box 20 contains electrical components. Terminals 3 a are provided on top of the vertical compressor 3 . A portion of the housing 1B above the terminal 3a (ie, an inclined portion) has no opening. This prevents rain from getting the terminals wet.

The fan motor 4a and the fan 4b of the fan unit 4 are located in opposite directions with respect to the airflow direction. More precisely, the fan motor 4a is located upstream, opposite the heat exchanger 2B, and the fan 4b is located downstream, opposite the outflow hole made in the front wall 1a of the casing 1B. This is the difference between the fifth embodiment and the first to fourth embodiments shown in FIGS. 1 to 4 .

As long as the fan unit 4 is in operation, the fan motor inevitably generates heat. However, the fan motor 4a can be effectively cooled. At this time, since the motor 4a is located upstream, it can be well cooled by the air sucked into the housing 1B.

Similar to the fan motor 4a, the compressor 3 is located at the upstream end of the air flow, and like the fan motor 4a is located on the axis Q of the fan 4b. Therefore, the blade fan 4b drives the air to flow in a region around the axis Q at a lower speed. In this way, if there is any obstacle in this area, the obstacle will not create resistance to the airflow and will not greatly impair the airflow efficiency of the fan 4b.

The same advantages are obtained in the first to fourth embodiments shown in FIGS. 1 to 4 . At this time, since the compressor 3 is located on the axis Q of the fan 4b, and is located upstream of the fan 4b.

In the first to fifth embodiments shown in Figs. 1 to 5B, the compressor 3 is located at the upstream end of the gas flow in the casing. Therefore, during the refrigeration cycle of the outdoor unit, the compressor 3 can be efficiently cooled.

An outdoor unit of a sixth embodiment of the present invention will now be described with reference to FIGS. 6A and 6B. The sixth embodiment is similar to the first embodiment shown in FIG. 1 . Housing 1 is rectangular when viewed from above, within which heat exchanger 2 , vertical compressor 3 and fan unit 4 are arranged along axis 5 of housing 1 . As with the first embodiment, the heat exchanger 2 is U-shaped when viewed from above. The sixth embodiment differs from the first embodiment in that, like the fifth embodiment shown in FIGS. 5A and 5B , the fan motor 4 a is located upstream of the fan 4 b.

The outdoor unit according to the sixth embodiment further includes a frequency converter 7 , a frequency converter box 8 and a reactor 9 . The frequency converter 7 is installed in the frequency converter box 8 . The frequency converter box 8 , the reactor 9 and the heat exchanger 2 are arranged along the axis 5 of the casing 1 and aligned with a straight line parallel to the top 1 h of the casing 1 . The frequency converter 7 and the reactor 9 are used for electronic control of the operating frequency of the compressor 3 .

A support plate 10 is fixed on the heat exchanger 2 . The support plate 10 supports the frequency conversion box 8 and the reactor 9 . The plate 10 comprises three parts integrally formed. The first part is fixed on the upper edge of the heat exchanger 2, and its cross section is inverted U-shaped. The second part supports the reactor 9 and has a U-shaped cross section. The third part extends in the horizontal direction and supports the frequency conversion box 8 .

A fan support plate 11 supports the fan motor 4a. The plate 11 is shaped like a basin, having a vertical portion 11a, a bottom 11b and a top 11c. The fan motor 4a is fixed to the vertical portion 11a. The bottom 11b is fixed to the bottom 1j of the casing 1 . The top 11c is attached to the front wall 1a of the housing 1 .

Therefore, the frequency conversion box 8 , the reactor 9 and the heat exchanger 2 can be disposed in the middle of the top 1 h of the housing 1 and extend on the front wall 1 a and the rear wall 1 b of the housing 1 . The frequency conversion box 8 , reactor 9 and heat exchanger 2 arranged in this way increase the strength of the casing 1 . The heat exchanger 2 is firmly fixed. The number of bolts used to secure the frequency converter 8, reactor 9 and heat exchanger 2 may be fewer than would otherwise be required. In this way, the outdoor unit is easy to assemble.

Referring now to FIG. 7, an outdoor unit according to a seventh embodiment of the present invention will be described. As in the sixth embodiment shown in FIGS. 6A and 6B , the frequency converter box 8 and the reactor 8 equipped with the frequency converter 7 are arranged in a straight line along the top 1 h of the housing 1 .

The top 11c of the fan support plate 11A is raised to contact the lower surface of the inverter case 8 . That is to say, the board 11A supports not only the fan unit 4 but also the inverter case 8 . The support plate 10A fixed to the upper edge of the heat exchanger 2 only supports the reactor 9 .

Therefore, the inverter case 8 and the fan support plate 11A are aligned in the vertical direction within the casing 1 . More specifically, the frequency converter box 8 and the fan support plate 11A are located in the middle of the housing 1 and disposed between the top 1h and the bottom 1j of the housing 1 . Therefore, the casing 1 is more solid than other methods, and the frequency conversion box 8 is supported more firmly.

Eighth, ninth and tenth embodiments of the present invention will now be described with reference to FIGS. 8A to 10, each of which has a modified inverter box 8 or a modified fan support plate 11A.

An eighth embodiment of the present invention will first be described with reference to FIGS. 8A and 8B. In the eighth embodiment, the inverter box 8 is the same as that in the sixth embodiment. The fan support plate 11B is different. That is, the fan support plate 11B has a pair of positioning protrusions 12 . As shown in FIGS. 8A and 8B, protrusions 12 are integrally formed with the support plate 11B, and protrude upward from both left and right ends of the top portion 11c.

When the inverter box 8 is mounted on the top 11c of the fan support plate 11B, it is disposed in the space between the positioning protrusions 12 . This prevents movement of the inverter box 8 in the width direction of the housing. The frequency conversion box 8 is also not movable in the depth direction, since it is arranged between the front wall 1 a of the housing and the reactor 9 on the one hand, and between the reactor 9 and the heat exchanger 2 on the other hand.

Referring now to FIG. 9, an outdoor unit according to a ninth embodiment of the present invention will be described. As shown in FIG. 9, a pair of rods 13 each having a triangular cross-section are provided at both left and right ends of the lower surface 8b of the inverter case 8A. The width of the fan support plate 11C is equal to the distance that the rods 13 are separated from each other. Therefore, when the inverter box 8A is mounted on the fan support plate 11C, the rods 12 are in contact with the left and right edges of the support plate 11C. Once mounted on the plate 11C, the inverter case 8A is firmly held on the fan support plate 11C.

An outdoor unit of a tenth embodiment of the present invention will now be described with reference to FIG. 10 . In the tenth embodiment, the inverter case 8B has a pair of positioning protrusions 14 . The protrusion 14 protrudes downward from the lower surface of the inverter case 8B. The width of the fan support plate 11D is substantially equal to the width of the inverter. The plate 11D has a pair of positioning holes 15 formed in the top 11c. The holes 15 are spaced apart from the positioning protrusions 14 by the same distance. The inverter box 8B is mounted on the top 11c of the plate 11D such that the protrusion 14 is inserted into the positioning hole 15 of the support plate 11D. Therefore, the inverter case 8B is firmly held on the top 11c of the fan support plate 11D.

An outdoor unit of an eleventh embodiment of the present invention will now be described with reference to FIG. 11 . As shown in FIG. 11, the casing 21 of the eleventh embodiment is rectangular when viewed from above. Inside the casing 21, a vertical compressor 22, a heat exchanger 23 and a fan unit 24 are arranged in the above order from the upstream end of the air flow. (Compressor 22 has a compression mechanism which has a vertical axis and therefore has a greater height than width dimension).

The axis O of the vertical compressor 22, the center of the heat exchanger 23 and the axis of the fan unit 24 are all on the axis 25 of the outdoor unit. This means that both left and right halves of the compressor 22 , heat exchanger 23 and fan unit 24 are positioned relative to the axis 25 .

The housing 21 has a front wall 21a (lower side in FIG. 11) and a rear wall 21b (upper side in FIG. 11). This outdoor unit is installed such that the rear wall 21b is spaced a predetermined distance from, for example, the outer wall of the housing. When the fan unit 24 is driven, air flows in the direction of the arrow in FIG. 11 . The vertical compressor 22, heat exchanger 23 and fan unit 24 are arranged in the above order in the direction of air flow. Both the front wall 21a and the rear wall 21b have holes (not shown). The holes made in the rear wall 21b are inlet holes through which air is sucked into the casing 21 when the fan unit 24 is driven. The holes made in the front wall 21a are inflow holes through which air exits the casing 21 when the fan unit 24 is driven.

The heat exchanger 23 is rectangular when viewed from above. Its center is on the axis 25 of the housing 21 . The center C of the vertical compressor 22 is also on the axis 25 . Thus, the heat exchanger 23 has a left half extending on the diameter of the compressor 22 and positioned symmetrically with respect to the axis 25 .

The vertical compressor 22 is a so-called helical vane compressor. The compressor 22 is connected to the heat exchanger 23 and a refrigeration cycle component (ie, heat exchanger) of an indoor unit through various pipes including an inlet pipe and an outlet pipe.

The fan unit 24 includes a fan motor 24a and a blade fan 24b (hereinafter referred to as "fan"). The fan 24b is fixed on the shaft of the fan motor 24a. The fan 24b is located upstream of the air flow, while the fan motor 24a is provided downstream therefrom.

During operation, the vertical compressor 22 is driven to compress the refrigerant. The compressed refrigerant circulates in the refrigeration circuit including the heat exchanger 23 . Thus, the outdoor unit operates to air-condition a room in which the indoor unit is installed.

When the compressor 22 is driven and the refrigerant circulates in the refrigerating circuit, the fan unit 24 is also driven to draw air into the casing 21 through the inflow hole on the rear wall 21b. Air flows inside the casing 21 . A portion of the air contacts the vertical compressor 22 , cools the compressor 22 , and then flows through a heat exchanger 23 . The rest of the air flows directly through the heat exchanger 23 . Therefore, the heat exchanger 23 performs heat exchange between the air and the refrigerant. Then, the fan unit 24 discharges the air from the housing 21 through the outlet holes in the front wall 21a.

In the above eleventh embodiment, as long as the diameter of the fan 24b of the fan unit 24 is determined, the appropriate diameter of the housing 21 can be determined. Neither the compressor 22 nor the pipeline connected to it will be limited at all. The width of the housing 21. Therefore, the width of the housing 21 can be reduced, thereby reducing the installation space of the outdoor unit. In addition, the housing 21 is rectangular when viewed from above, and is also simple in structure.

The vertical compressor 22 , the heat exchanger 23 and the fan unit 24 are arranged on the axis of the housing 1 with their axes substantially aligned with the axis 25 . The respective left and right halves of these components are symmetrical about the axis 25 . As a result, the outdoor unit according to the eleventh embodiment is well balanced in weight and can be kept stable when it is moved from one place to another.

Also, a part of the air contacts the vertical compressor 22 immediately after being introduced into the casing 21 through the inlet hole, because the compressor 22 is located at the upstream end of the air flow. This means that the vertical compressor 22 acts to increase cooling efficiency.

The vertical compressor 22 is located upstream of the fan unit 24 and its center O is on the axis of the fan 24b, which is aligned with the axis 25 of the housing 21 . The air flows at a lower speed in a region around the axis of the fan 24b. Therefore, the fan 24b makes the air flow at a lower speed in an area around the axis Q. As shown in FIG. Therefore, if there is any obstacle in this area, it will not act as a resistance to the airflow, nor will it greatly impair the blowing efficiency of the fan 24b.

Fig. 12 shows an outdoor unit of an air conditioner according to a twelfth embodiment of the present invention. Components that are the same as those in the eleventh embodiment (FIG. 11) are numbered in FIG. 12 as before and will not be discussed in detail. As shown in plan view 12, a vertical compressor 22 is provided on one corner of the housing 21. As shown in FIG. In other words, the center O of the compressor 22 is located outside the axis 25 of the casing 21 or close to the side of the heat exchanger 3 .

The outdoor unit is completely unbalanced in weight but the direction of airflow is not changed. Therefore, the heat exchange efficiency of the heat exchanger is improved. In addition, the width of the housing 21 can be reduced, thereby reducing the installation space of the outdoor unit, because neither the compressor 22 nor the pipelines connected thereto limit the width of the housing 21 . Furthermore, the casing 21 is rectangular when viewed from above, and has a very simple structure.

Fig. 13 shows an outdoor unit of an air conditioner according to a thirteenth embodiment of the present invention. As shown in FIG. 13, a vertical compressor 22, a heat exchanger 23A and a fan unit 24 are provided in the casing 21 of the outdoor unit along the axis 25 of the casing 21 in the above order. More precisely, the compressor 22 , the heat exchanger 23A and the fan unit 24 are all centered on the axis 25 of the housing 21 .

The housing 21A is substantially rectangular when viewed from above, but a protrusion 26 is formed on the rear wall 21b. The protrusion 26 is integrally formed with the housing 21A and extends outwardly on the axis 25 of the housing 21A.

The depth of the housing 21A, that is, the distance between the front wall 21a of the housing 21A and the distal end of the protrusion 26 is the same as that of the housing 21 in the eleventh and twelfth embodiments ( FIGS. 11 and 12 ). The protrusion 26 has a curved surface with a predetermined radius of curvature. Both ends of the protrusion 26 are substantially straight, and are inclined to the rear wall 21b of the housing 21A. The vertical compressor 22 is disposed in the protrusion 26 . That is, the compressor 22 is located behind the heat exchanger 23A provided in the housing 21A and extending along the inner surface of the rear wall 21b.

The heat exchanger 23A is substantially U-shaped when viewed from above. Its long portion 23a is opposed to the rear wall 21b of the housing 21A, and its left and right short portions 23b are opposed to the side walls 21c of the housing 21A. That is to say, the long portion 23a is provided in a space defined by the rear wall 21b of the casing 21A, the vertical compressor 22 and the fan unit 24, and the short portion 23b is disposed in a space defined by the side wall 21c and the fan unit 24. within a space.

Through-holes (not shown) are made in the front wall 21a, rear wall 21b, side wall 21c and the walls of the protrusion 26 of the housing 21A. Holes made in the front wall 21a serve as outlet holes. The holes made in the walls 21b and 21c and in the wall of the protrusion 26 serve as inflow holes. A vertical compressor 22, a heat exchanger 23A, and a fan unit 24 are provided in the casing 21A in the stated order from the upstream of the air flow.

The thirteenth embodiment operates exactly the same as the first to twelfth embodiments. The width of the casing 21A is reduced, thereby reducing the installation space of the outdoor unit. The left and right halves of each part 22 , 23A and 24 are symmetrical about the axis 25 . Therefore, the outdoor unit according to the thirteenth embodiment has a good weight balance and can be kept stable while being moved from one place to another.

Furthermore, since the vertical compressor 22 is disposed in the protrusion 26 and the inlet hole is on the wall of the protrusion 26, a large space is provided around the protrusion 26. A large amount of air can be sucked into the housing 21A from this large space.

The amount of air contacting the vertical compressor 22 is increased, thereby enhancing cooling efficiency.

The amount of air applied to the heat exchanger 23A is also increased, and the heat exchanger 23A is U-shaped when viewed from above. This contributes to an increase in heat exchange efficiency.

Fig. 14 shows an outdoor unit of an air conditioner according to a fourteenth embodiment of the present invention. The fourteenth embodiment is identical to the thirteenth embodiment (FIG. 13) except that the protrusion 26 is provided on the right half of the rear wall 21b of the housing 21B instead of the axis 25 of the housing 21B. (The protrusion 26 may also be provided on the left half of the rear wall 21b). As in the thirteenth embodiment, a vertical compressor 22 is provided on the protrusion 26 .

Since the protrusion 26 is provided on the right half of the rear wall 21b, the weight of this outdoor unit must be unbalanced. However, the direction of the airflow does not change. Therefore, heat exchange efficiency is improved. Furthermore, the width of the housing 21B can be reduced, thereby reducing the installation space of the outdoor unit, because neither the compressor 22 nor the pipelines connected thereto limit the width of the housing 21B. This reduces the installation space of the outdoor unit, and the housing 21B is very simple in structure.

Further, when the outdoor unit is installed such that the protrusion 26 is defined according to the outer wall of a casing, a large space is provided around the protrusion 26 . A large amount of air can be sucked into the protrusion 26 from this large space, and also into the housing 21B. Since the vertical compressor 22 and the heat exchanger 23A are disposed in the protrusion 26 and the housing 21B, respectively, as in the thirteenth embodiment, both cooling efficiency and heat exchange efficiency are improved.

15A and 15B show an outdoor unit of a fifteenth embodiment of the present invention. The fifteenth embodiment is identical to the thirteenth embodiment shown in FIG. 13 except for the shapes of the casing 21C and the heat exchanger 23B.

The vertical compressor 22, the heat exchanger 23B, and the fan unit 24 are arranged on the same axis, that is, the axis 25 of the casing 21C, which is the same as the thirteenth embodiment. In other words, the axes of the compressor 22 , the central portion of the heat exchanger 23B and the fan unit 24 are aligned with the axis 25 . The fan unit 24 draws air into the housing 21C in the same direction as in the thirteenth embodiment, and discharges air therein. The positional relationship of the inflow hole and the outflow hole formed in the wall of the housing 21C is the same as that in the thirteenth embodiment. Therefore, the fifteenth embodiment obtains the same advantages as those of the thirteenth embodiment.

A protrusion 26A is integrally formed with the housing 21A at the center of the rear wall 21b of the housing 21A. The depth of the housing 21C, that is, the distance between the front wall 21a and the distal end of the protrusion 26A is substantially equal to that of the housing 21, the thirteenth embodiment The depth of the housing 21A in ( FIG. 13 ) and the housing 21B in the fourteenth embodiment ( FIG. 14 ).

The wall of the protrusion 26A includes a flat central portion 21f and two inclined portions 21e. The flat central portion 21f is parallel to the rear wall 21b of the housing 21C. The inclined portion connects the central portion 21f of the housing 21C with the rear wall 21b. Inlet holes (not shown) are formed on the central portion 21f and the inclined portion 21e.

The heat exchanger 23B has a straight short portion 23b extending along the side wall 21c of the casing 21B. The long portion 23d of the heat exchanger 23B includes several portions 23q which appear curved when the heat exchanger 23B is viewed from above. Of these bent portions 23q, at least one has a bent direction opposite to that of the other two.

More specifically, the long portion 23d includes three curved portions 23q. The central portion 23q is bent in a U shape, and the side portions 23q are bent in an inverted U shape. As a result, the central portion 23q extends curved along a portion of the peripheral surface of the vertical compressor 22 . The number of bent portions 23q forming the heat exchanger 23B is not limited to three. The heat exchanger 23B may include more curved portions 23q.

An electric parts box 30 is provided at the upper portion of the casing 21C. The top plate 21g of the housing 21C covers the top of the box 30 . The heat exchanger 23B is higher than the vertical compressor 22 . The top plate 21g covering the top of the heat exchanger 23B is at a level higher than the top of the vertical compressor 22 .

The terminal 22a is mounted on the top of the vertical compressor 22 . A portion of the housing 21C above the terminal 22a (ie, an inclined portion) has no hole. This prevents rainwater from getting the terminal 22a wet.

Such an outdoor unit may be installed so that only the middle portion 21f of the protrusion 26a contacts the outer wall of the housing. In this case, the inclined portion 21e of the protrusion 26a remains spaced from the outer wall of the housing. Therefore, the inflow hole formed in the inclined portion 21e is in an open state. They fulfill their function of guiding air smoothly into the casing 21C.

Since the housing 21C can be installed so that the protrusion 26a contacts the outer wall of the housing, this outdoor unit looks neat and compact and occupies only a small space. Furthermore, the depth of this outdoor unit appears to be smaller than it actually is because of the stepped portion on the rear wall of the housing.

Further, since the heat exchanger 23B has several bent portions 23q, it can be longer than the heat exchangers 23 and 23A shown in FIGS. 11 and 12 . Accordingly, heat exchanger 23B may operate more efficiently than heat exchangers 23 and 23A.

Fig. 16 is a schematic diagram of an outdoor unit according to a sixteenth embodiment of the present invention. The sixteenth embodiment is identical to the fifteenth embodiment shown in FIGS. 15A and 15B except that the position of the fan unit 24 is reversed with respect to the direction of the air flow. Components similar to those in the fifteenth embodiment are given the same numerals and will not be described in detail.

More specifically, the fan unit 24 is positioned with its fan 24b opposite the heat exchanger 23B upstream of the air flow and its fan motor 24a opposite the front wall 21a provided downstream of the air flow. Since the fan motor 24a is opposed to the front wall 21a of the housing 21C, it is easy to wire the motor 24a and perform maintenance. This is an additional advantage of the sixteenth embodiment having the same advantages as the fifteenth embodiment.

Fig. 17 shows an outdoor unit according to a seventeenth embodiment of the present invention. This embodiment is identical to the fifteenth embodiment shown in FIGS. 15A and 15B except that the housing 21D has a projection 26B having a vertical wall curved with a predetermined radius of curvature. The top 40b of the protrusion 26B is inclined downward, has no hole thereon, and is lower than the top plate 21g of the housing 21D. The vertical wall of the protrusion 26B has an inlet hole 27 . Therefore, the seventeenth embodiment has two advantages. The first advantage is the same as that obtained by the projection 26 with a curved vertical wall of the thirteenth embodiment (FIG. 13). The second advantage is the same as that obtained by the closed inclined portion of the housing 21C of the fifteenth embodiment (FIGS. 15A and 15B ) above the terminals 22a.

An outdoor unit according to an eighteenth embodiment of the present invention will now be described with reference to FIGS. 18C and 18D. The heat exchangers 23, 23A and 23B provided in the above-described embodiments each include a plurality of rectangular fins and heat exchange tubes passing through the fins.

18A and 18B show a conventional heat exchanger. Such a general heat exchanger includes several rectangular fins F and several tubes P, as shown in FIG. 18A. The pipes P are arranged parallel to each other with a predetermined interval therebetween. The ends of the pipes P are connected together, for example by U-bends (not shown). As shown in FIG. 18B, each pipe P includes a straight portion and a bent portion 23e. Rectangular fins F are mounted on the pipe P at predetermined intervals. The fins F on the straight portion of the pipe P are parallel to each other, and the fins on the curved portion 23e are inclined to each other. Assume that the air flow passes through the fin F in the direction indicated by the arrow. Thus, the intervals between the fins F on any one of the curved portions 23e are very short at the downstream ends K of these fins F. FIG. Therefore, the downstream end K of the fin F forms resistance to air flow. Finally, conventional heat exchangers cannot achieve sufficient heat exchange efficiency.

In the eighteenth embodiment of the present invention, the bent portion 23e of the pipe P has the same radius of curvature as that of a normal heat exchanger. The fins F are positioned towards the upstream of the gas flow, as shown in Figure 18C. Therefore, the interval between the downstream ends K of the fins F on any of the curved sections 23e is not so small as to create resistance to air flow. Therefore, the heat exchanger achieves sufficient heat exchange efficiency simply by orienting the fins upstream of the air flow. Sufficient heat exchange efficiency can be obtained without changing the material or shape of the tubes P and fins F.

Fig. 19 shows an outdoor unit of a nineteenth embodiment of the present invention. This embodiment is similar to the fifteenth embodiment ( FIGS. 15A and 15B ) in the following respects. First, the vertical compressor 22, the heat exchanger 23B, and the fan unit 24 are arranged in the casing 21E in the stated order from the upstream of the airflow. Second, the heat exchanger 23B is higher than the vertical compressor 22 , and the top plate 21 f of the casing 21E covering the top of the heat exchanger 23B is positioned higher than the top of the vertical compressor 22 . Third, the portion 40b of the casing 21E covering the top of the compressor 22 is inclined and closed.

The nineteenth embodiment differs from the fifteenth embodiment in that there is no protrusion integrally formed with the rear wall 21b of the casing 23E like the eleventh embodiment shown in FIG. 11 . That is, the housing 21E has a simple shape, rectangular when viewed from above. The outdoor unit is installed so that the rear wall 21b is in contact with the outer wall W of an enclosure, as shown in FIG. 19 . Since the rear portion of the housing 21E has a stepped portion, a space is provided between the wall W and the upper portion of the housing 21E. Pipe P can be provided in this space.

20A and 20B show an outdoor unit according to a twentieth embodiment of the present invention. The twentieth embodiment is provided with a heat exchanger 23B. Similar to the corresponding parts in the fifteenth embodiment ( FIGS. 15A and 15B ) and the sixteenth embodiment ( FIG. 16 ), the heat exchanger 23B has several bent portions 23q. Therefore, the heat exchanger 23B has a larger heat exchanging surface and a smaller weight. The top plate 21i of the casing 21E is curved to form a stepped portion whose front half covers the fan unit 24 and whose rear half covers the heat exchanger 23B and the vertical compressor 22 . Therefore, once the outdoor unit is mounted so that its rear portion touches the outer wall W, a space is provided between the wall W of the casing and the upper portion of the housing 2E. A pipe P may be provided in this space, extending above the heat exchanger 23B and the vertical compressor 22 .

Also, only the rear half of the top plate 21i can be removed. In this case, an inlet to both the vertical compressor 22 and the heat exchanger 23B can be formed by removing only the rear half of the top plate 21i. Therefore, the compressor 22 and the heat exchanger 23B can be easily repaired and maintained.

Fig. 21 shows an outdoor unit of a twenty-first embodiment of the present invention. The twenty-first embodiment is characterized in that the compressor 22 is housed in a separable cylindrical casing 50 . The case 50 is provided in the casing of the outdoor unit, and includes a left half 50a and a right half 50b. Compressor 22 may be of the type that operates with virtually no noise or with some noise (such as a screw vane compressor). If the vertical compressor 22 is of the latter type, the shroud 50 will prevent nearly all of the noise from escaping.

A twenty-second embodiment of the present invention will now be described with reference to Figs. 22A and 22B. The present embodiment is characterized in that the projection provided on the rear wall 21b of the casing 21G is a case 50A covering a vertical compressor (not shown). The case 50A includes a base and a cover. The base is attached to the rear wall 21b. The cover is hinged to the base on one vertical side and has a flange 51 on the other vertical side. When the lid is rotated to a closed position, the flange 51 is secured to the base by a suitable securing means, as shown in Figure 22A.

When the cover is rotated to an open position, as shown in Fig. 22B, vertical compressor 22 is accessible. This facilitates maintenance, wiring and piping of the compressor 22 .

A twenty-third embodiment according to the present invention will now be described with reference to Figs. 23A and 23B. The twenty-third embodiment has a compressor cover 50B in which the vertical compressor 22 is housed. The cover 50B is cylindrical with a closed bottom and a top with a hole 52 for guiding the pipe P. The diameter of the cover 50B is reduced at its upper portion 53 . With the upper portion 53 having a small diameter, the cover 50B presents a high resistance to air flow. As a result, the air flow smoothly flows onto the heat exchanger (not shown). This helps the heat exchanger to obtain a sufficient heat exchange efficiency.

Referring now to FIG. 24, an outdoor unit of a twenty-fourth embodiment of the present invention will be described. A protrusion 26C is integrally formed with the rear wall 21b of the housing 21H. The wall of the projection 26C includes a central portion 21j and side portions 21k. The central portion 21j is curved with a predetermined radius of curvature. The side portion 21k is a straight section and is inclined when viewed from above. They connect the middle portion 21j to the rear wall 21b of the housing 21H. Both side portions 21 k intersect at right angles a straight line 55 extending along a bent portion 23 q of the heat exchanger 23B opposite to the vertical compressor 22 . The side portion 21k has inflow holes 27 through which heat exchange air is sucked into the housing 21H.

In the housing 21H, the air sucked through the inflow hole 27 flows smoothly along the curved portion 23q of the heat exchanger 23B, encountering little resistance. This contributes to enhancing the heat exchange efficiency of the heat exchanger 23B.

Referring now to FIG. 25, an outdoor unit according to a twenty-fifth embodiment of the present invention will be described. A protrusion 26D is integrally formed with the rear wall of the housing 21J. The wall of the protrusion 26D includes a central portion 21j and side portions 21k. The central portion 21j is curved with a predetermined radius of curvature. The side portions 21k are straight and inclined when viewed from above. They connect the middle portion 21j to the rear wall 21b of the housing 21H. The side portions 21k have holes 27 through which heat exchanging air is sucked into the casing 21J.

In the casing 21J, the air sucked in through the inflow hole 27 smoothly flows along the bent portion 23q of the heat exchanger 23B, encountering little resistance. This contributes to enhancing the heat exchange efficiency of the heat exchanger 23B.

Referring now to FIG. 26, an outdoor unit according to a twenty-sixth embodiment of the present invention will be described. This embodiment is otherwise the same as the fifteenth embodiment shown in FIGS. 15A and 15B except that a partition 57 is provided between the vertical compressor 22 and the central curved portion 23q of the heat exchanger 23B. As in the twenty-fifth embodiment, the wall of the projection 26E includes a central portion 21j and two side portions 21k. The central portion 21j is curved with a predetermined radius of curvature, and the side portions 21k are straight and inclined when viewed from above. The side 21k has inlet openings 27 through which heat exchange air is sucked into the housing 21k.

The air sucked through the inflow hole 27 formed on the left side portion 21k of the protrusion 26E flows along the left curved portion 23q of the heat exchanger 23B. At the same time, the air sucked through the inflow hole 27 formed in the right side wall 21k flows along the right curved portion 23q. As a result, both airflows reach the central curved portion 23q of the heat exchanger 23B. Without the partition 57, the airflows would collide at the central curved portion 23q, creating turbulence and noise.

Spacers 57 prevent these air streams from colliding. They flow smoothly through the heat exchanger 23B without turbulence. Therefore, the noise generated by the air flow is reduced, and the operating efficiency of the heat exchanger 23B is improved.

An outdoor unit of a twenty-seventh embodiment of the present invention will now be described with reference to FIGS. 27A and 27B. In the fifteenth embodiment, the heat exchanger 23B has several bent portions 23q. A spacer 58 is provided between the vertical compressor 22 and the central curved portion 23q opposite to the compressor 22 . Spacer 58 is either integral with vertical compressor 22 or not. In both cases, partition 58 separates heat exchanger 23B from vertical compressor 22 . Therefore, the heat exchange air reliably flows toward the central curved portion 23q of the heat exchanger 23B even if the dimensions of the vertical compressor 22 and the heat exchanger 23B are different from those designed. Therefore, each part of the heat exchanger 23B is effectively used to obtain heat exchange. Also, spacer 58 helps reduce noise that may be caused by airflow.

Fig. 28 shows an outdoor unit according to a twenty-eighth embodiment of the present invention. The bottom of the housing 21L has legs 60 . The legs 60 protrude only from the rear wall of the housing 21L, but not from the side walls thereof, by a distance 60m which is smaller than the depth 26n of the protrusion 26E. The positioning and dimensioning of the legs 60 should prevent the housing 21L from collapsing and improve safety when moving the outdoor unit to or from the installation position.

Claims (13)

1. the outdoor unit of an air-conditioner, it comprises:

One housing, it has the rear portion of air intake effect together and the front portion of air outlet slit effect together, compressor, heat exchanger and fan unit wherein are set to the front portion from this rear portion in order in a straight line, and set-up mode is that the mid portion of described compressor, described heat exchanger and described fan unit is seen the axial alignment with described housing from above;

Wherein, described housing has a projection on described rear portion, and described projection is stretched out on the depth direction of described housing, thereby, cross described rear portion around the described housing of described compressor that part of and stretch out.

2. an outdoor unit as claimed in claim 1 is characterized in that, described fan unit comprises that a fan and is used to make the fan motor of fan rotation, and described compressor is a vertical compression machine.

3. an outdoor unit as claimed in claim 1 is characterized in that, described heat exchanger is crooked, thereby the mid portion relative with a part of outer surface of described compressor of described heat exchanger seen towards front curvature from above.

4. outdoor unit as claimed in claim 3, it is characterized in that, described heat exchanger comprises the two short side parts of seeing the both sides that are parallel to described housing from above, and one the described rear portion along described housing form and the long side part between described short side part, described long side part part therebetween has the sweep relative with a part of outer surface of described compressor, and this sweep is towards front curvature.

5. an outdoor unit as claimed in claim 3 is characterized in that, is provided with a compartment at the described sweep place of described heat exchanger and in the intersection from the heat exchange air of the left and right side of described sweep.

6. an outdoor unit as claimed in claim 3 is characterized in that, between described compressor and sweep described heat exchanger and that compressor is relative separator is set.

7. an outdoor unit as claimed in claim 4 is characterized in that, described heat exchanger comprises some fins and penetrate the heat-exchange tube of described fin, the described fin predetermined interval that is spaced apart from each other;

Wherein said fin is provided with towards the downstream of air-flow.

8. outdoor unit as claimed in claim 1, it is characterized in that, described heat exchanger is than described compressor height, and described housing has a top board that forms, thereby, the part above the described heat exchanger of top board is higher than the part above described compressor, and the part above described compressor tilts at a predetermined angle and seals.

9. an outdoor unit as claimed in claim 1 is characterized in that, described housing has top board, and this top board forms a ladder part, and this step portion provides a space, is used for pipe laying.

10. an outdoor unit as claimed in claim 1 is characterized in that, described compressor is centered on by a case, and described case comprises some sections, and the part of described case is from the outstanding projection that forms of described housing, and housing can be opened or close to described projection.

11. outdoor unit as claimed in claim 1, it is characterized in that, the described projection of described housing has the part that at right angles tilts with the straight line that extends along a sweep of heat exchanger, and this sweep is relative with compressor, and makes the ingate on these parts of projection.

12. outdoor unit as claimed in claim 1, it is characterized in that, the described projection of described housing has the part of bringing discharge orifice into, these are gone into discharge orifice and are used to guide heat exchange air to enter described housing, and be provided at the air guide fins of the described heat exchange air of guiding on the described periphery of going into discharge orifice, described air guide fins is along the direction projection of the sweep relative with described compressor of heat exchanger.

13. an outdoor unit as claimed in claim 1 is characterized in that, described housing has an end and one and is arranged on leg on the rear side at this end, and these legs are towards the left and right sides projection of described projection.

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