CN118103637A - Outdoor unit of refrigeration cycle device - Google Patents

Abstract

Provided is an outdoor unit of a refrigeration cycle device, which can be prevented from becoming large and can obtain a high air volume even when the external static pressure is high. The outdoor unit is provided with a casing (1), wherein the casing (1) is provided with a machine chamber (2) and a blower chamber (3), and the blower chamber (3) accommodates a heat exchanger (4) and a blower (100) therein. The blower (100) is a double suction centrifugal blower, and is provided with: an impeller (200); and a scroll (110) which is provided with a suction port and a discharge port (112) and in which an impeller (200) is disposed. A plurality of discharge ports (112) are provided, and the plurality of discharge ports (112) are arranged on a discharge port arrangement surface of the housing (1). The sum of the widths of the plurality of discharge ports (112) in the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing (1) is mounted is larger than the width of the blower chamber (3) in the direction.

Description

Outdoor unit of refrigeration cycle device

Technical Field

The present disclosure relates to an outdoor unit of a refrigeration cycle apparatus.

Background

In an outdoor unit of an air conditioner provided with an air heat exchanger and a blower, a configuration is known in which the blower is a centrifugal blower (sirocco fan), an air intake port is provided on at least a rear surface side of a casing, and an air outlet port is provided on any one of a right side surface, a left side surface, both left and right side surfaces, and an upper surface of the casing (for example, refer to patent document 1).

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 07-027369

Disclosure of Invention

Problems to be solved by the invention

However, in the outdoor unit of the refrigeration cycle apparatus shown in patent document 1, the size of the air outlet of the centrifugal blower is easily smaller than the size of the casing of the outdoor unit, particularly the size of the air heat exchanger, and the air volume is smaller than that of the conventional outdoor unit having the same size as the propeller fan mounted therein. Therefore, in particular, when the static pressure outside the outdoor unit is high, it is difficult to obtain a sufficient air volume. Further, since the air volume is reduced, it is difficult to perform sufficient pressure recovery, and thus noise is increased and input is deteriorated.

The present disclosure has been made to solve such problems. The purpose of the present invention is to provide an outdoor unit of a refrigeration cycle device, which can suppress the size of the outdoor unit from increasing, and can obtain high air volume even when the static pressure outside the outdoor unit is high, and can further realize low noise and low input.

Means for solving the problems

An outdoor unit of a refrigeration cycle device is provided with a housing formed with: a machine chamber in which a compressor is housed; and a blower chamber that is partitioned from the machine chamber and accommodates therein a heat exchanger and a blower, the blower being disposed on a secondary side of the heat exchanger, the blower being a double suction centrifugal blower, the blower comprising: an impeller having a plurality of blades arranged in a circumferential direction around a rotation axis; and a scroll casing having a discharge port and two bell mouths as suction ports, in which the impeller is disposed, the discharge port being provided in plural, the discharge ports being disposed on a discharge port disposition surface of the casing, a sum of widths of the discharge ports in a direction parallel to the discharge port disposition surface and horizontal in a state where the casing is mounted being larger than a width of the blower chamber in the direction.

Effects of the invention

According to the outdoor unit of the refrigeration cycle device disclosed by the invention, the following effects are achieved: the size of the outdoor unit can be prevented from increasing, and even when the static pressure outside the outdoor unit is high, a high air volume can be obtained, and further, noise and input can be reduced.

Drawings

Fig. 1 is a front view of an outdoor unit of a refrigeration cycle apparatus according to embodiment 1 in a state in which a front panel is removed.

Fig. 2 is a plan view showing a main part of an outdoor unit of the refrigeration cycle apparatus according to embodiment 1.

Fig. 3 is a side view showing a main part of an outdoor unit of the refrigeration cycle apparatus according to embodiment 1.

Fig. 4 is a front view of an outdoor unit of the refrigeration cycle apparatus according to embodiment 1.

Fig. 5 is a front view of an outdoor unit of the refrigeration cycle apparatus according to embodiment 1.

Fig. 6 is a plan view of an impeller of a blower provided in the outdoor unit of embodiment 1.

Fig. 7 is a cross-sectional view of a blower provided in the outdoor unit of embodiment 1.

Fig. 8 is a plan view of an impeller of a blower provided in the outdoor unit of embodiment 1.

Fig. 9 is a cross-sectional view of an impeller of a blower provided in the outdoor unit of embodiment 1.

Fig. 10 is a perspective view of an impeller of a blower provided in the outdoor unit of embodiment 1.

Fig. 11 is a plan view showing a perspective main part of another example of an outdoor unit of the refrigeration cycle apparatus according to embodiment 1.

Fig. 12 is a plan view showing another example of the outdoor unit of the refrigeration cycle apparatus according to embodiment 1.

Fig. 13 is a plan view showing another example of the outdoor unit of the refrigeration cycle apparatus according to embodiment 1.

Fig. 14 is a plan view showing a state in which a top plate is removed from an outdoor unit of the refrigeration cycle apparatus according to embodiment 1.

Fig. 15 is a front view showing a perspective main part of another example of an outdoor unit of the refrigeration cycle apparatus according to embodiment 1.

Fig. 16 is a front view of the outdoor unit of the refrigeration cycle apparatus according to embodiment 2 in a state in which the front panel is removed.

Fig. 17 is a cross-sectional view of an outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 18 is a front view of an outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 19 is a front view of an outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 20 is a front view showing a state in which a front panel is removed in a modification of the outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 21 is a front view showing a state in which a front panel is removed in other example 1 of the outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 22 is a front view showing a state in which a front panel is removed in another example of the outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 23 is a cross-sectional view showing another example 2 of the outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 24 is a front view showing the 2 nd other example of the outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 25 is a front view showing the 2 nd other example of the outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 26 is a front view showing a state in which a front panel is removed in a modification of the outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 27 is a front view showing a modification of the outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 28 is a perspective view of a blower provided in a modified example of an outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Fig. 29 is a cross-sectional view of a blower provided in a modification of the outdoor unit of the refrigeration cycle apparatus according to embodiment 2.

Detailed Description

Modes of an outdoor unit of a refrigeration cycle apparatus according to the present disclosure will be described with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and repetitive description thereof will be appropriately simplified or omitted. In the following description, for convenience, the positional relationship of each structure may be expressed with reference to the illustrated state. The present disclosure is not limited to the following embodiments, and any combination of the embodiments, modification of any component of the embodiments, or omission of any component of the embodiments may be made without departing from the spirit of the present disclosure.

Embodiment 1.

Embodiment 1 of the present disclosure will be described with reference to fig. 1 to 15. Fig. 1 is a front view of an outdoor unit of a refrigeration cycle apparatus in a state in which a front panel is removed. Fig. 2 is a plan view illustrating a main portion of an outdoor unit of the refrigeration cycle apparatus. Fig. 3 is a side view illustrating a main portion of an outdoor unit of the refrigeration cycle apparatus. Fig. 4 and 5 are front views of an outdoor unit of the refrigeration cycle apparatus. Fig. 6 is a plan view of an impeller of the blower provided in the outdoor unit. Fig. 7 is a cross-sectional view of a blower provided in the outdoor unit. Fig. 8 is a plan view of an impeller of a blower provided in the outdoor unit. Fig. 9 is a cross-sectional view of an impeller of a blower provided in the outdoor unit. Fig. 10 is a perspective view of an impeller of a blower provided in the outdoor unit. Fig. 11 is a plan view showing a perspective main part of another example of an outdoor unit of the refrigeration cycle apparatus. Fig. 12 and 13 are plan views showing other examples of the outdoor unit of the refrigeration cycle apparatus. Fig. 14 is a plan view showing a state in which a top plate is removed from an outdoor unit of the refrigeration cycle apparatus. Fig. 15 is a front view showing a perspective main part of another example of an outdoor unit of the refrigeration cycle apparatus.

The refrigeration cycle apparatus of the present embodiment includes an indoor unit and an outdoor unit. The indoor unit and the outdoor unit are respectively provided with a heat exchanger. The heat exchanger of the indoor unit and the heat exchanger of the outdoor unit are connected by a refrigerant pipe provided in a circulating manner. The refrigeration cycle apparatus functions as a heat pump that circulates a refrigerant flowing through a refrigerant pipe between a heat exchanger of an indoor unit and a heat exchanger of an outdoor unit to move heat between the heat exchanger of the indoor unit and the heat exchanger of the outdoor unit.

As shown in fig. 1 to 5, the outdoor unit of the refrigeration cycle apparatus of the present embodiment includes a casing 1. The housing 1 has, for example, a rectangular parallelepiped shape. That is, in the illustrated structure, the housing 1 has a front surface, a rear surface, an upper surface, a bottom surface, and left and right side surfaces.

A machine chamber 2 and a blower chamber 3 are formed in the casing 1. The machine chamber 2 is disposed on one of the left and right sides of the housing 1. The blower chamber 3 is disposed on the other of the left and right sides of the casing 1. The machine chamber 2 is partitioned from the blower chamber 3. A compressor, not shown, an electric component box, and the like are housed in the machine chamber 2. The heat exchanger 4 and the blower 100 are housed in the blower chamber 3.

As shown in fig. 2, an outdoor unit suction port 5 is formed in the side surface and the back surface of the portion of the casing 1 where the blower chamber 3 is arranged. As shown in fig. 4 and 5, a front panel 10 is provided on the front surface of the portion of the casing 1 where the blower chamber 3 is disposed. The front panel 10 is formed with an outdoor unit outlet 11. The interior of the blower chamber 3 serves as an air passage leading from the outdoor unit suction port 5 to the outdoor unit discharge port 11. As shown in fig. 5, a grid 12 may be provided at the outdoor unit outlet 11. In this case, the grille 12 may be attached to the front panel 10 or may be provided integrally with the front panel 10.

The heat exchanger 4 is disposed in an L-shape from the side surface to the back surface of the casing 1 having the outdoor unit suction port 5 in the blower chamber 3 in a plan view. The blower 100 is disposed downstream of the heat exchanger 4 in the air passage in the blower chamber 3. In other words, the blower 100 is disposed on the secondary side of the heat exchanger 4.

As shown in fig. 1 and fig. 3 to 5, in the configuration example described here, three blowers 100 are provided in the blower chamber 3. In this configuration example, three blowers 100 are arranged in the vertical direction. Each blower 100 is a so-called double suction centrifugal blower. The blower 100 includes an impeller 200, a scroll 110, a motor 101, and a shaft 102.

The impeller 200 is a centrifugal fan of the blower 100 for generating an air flow. As shown in fig. 2, the impeller 200 is disposed inside the scroll 110. The impeller 200 is rotatable about a rotation axis inside the scroll 110. As shown in fig. 6, the impeller 200 has a plurality of blades 210. The plurality of blades 210 of the impeller 200 are arranged in the circumferential direction around the rotation axis of the impeller 200.

The scroll 110 rectifies air blown from the impeller 200. The scroll 110 has a peripheral wall and two side walls. The side walls of the scroll 110 are provided on both sides of the impeller 200 in the rotation axis direction of the impeller 200. The peripheral wall of the scroll 110 is provided so as to surround the impeller 200 from the radially outer side of the impeller 200. The two side walls are disposed opposite to each other with the peripheral wall interposed therebetween.

As shown in fig. 7, two flare 111 are formed in the scroll 110. The two flare 111 of the scroll 110 serve as the suction ports of the blower 100. The flare 111 is provided at both sidewalls of the scroll 110, respectively. The suction port formed by the flare 111 is circular with the rotation axis of the impeller 200 as the center. The shape of the suction port is not limited to a circular shape, and may be other shapes such as an elliptical shape. The bell mouth 111 rectifies the gas sucked into the impeller 200 and makes it flow into the suction port of the impeller 200. The flare 111 is formed such that the opening diameter gradually decreases from the outside toward the inside of the scroll 110. Thus, the air in the vicinity of the suction port smoothly flows along the flare 111, and efficiently flows from the suction port into the impeller 200.

The scroll 110 has a discharge port 112. The discharge port 112 is an opening through which the air flow in the scroll 110 generated by the impeller 200 is discharged. The opening shape of the discharge port 112 is, for example, rectangular. The opening shape of the discharge port 112 is not limited to a rectangular shape. The opening surface of the discharge port 112 is arranged parallel to the rotation axis of the impeller 200.

The peripheral wall of the scroll 110 guides the air flow generated by the impeller 200 to the discharge port 112 along a curved wall surface. The peripheral wall is a wall disposed between side walls that are opposed to each other. The peripheral wall is disposed parallel to the rotation axis direction of the impeller 200, for example. The peripheral wall may be inclined with respect to the rotation axis direction of the impeller 200, and is not limited to being disposed parallel to the rotation axis direction.

The peripheral wall of the scroll 110 is formed into a curved surface having a vortex shape when viewed in a direction parallel to the rotation axis of the impeller 200. Examples of the scroll shape include a scroll shape based on a logarithmic spiral, an archimedes spiral, an involute curve, or the like. Thus, the air sent from the impeller 200 smoothly flows in the direction of the discharge port 112 in the gap between the impeller 200 and the peripheral wall. Accordingly, the static pressure of the air in the scroll 110 efficiently rises toward the discharge port 112.

In the following description, the "rotation axis of the impeller 200" may be referred to as the "rotation axis of the blower 100". The blower 100 configured as described above is a double suction centrifugal blower that sucks air from both end sides of the rotation shaft of the blower 100 and blows out the air in a direction perpendicular to the rotation shaft of the blower 100.

The motor 101 and the shaft 102 of each blower 100 are shared. That is, in the configuration example described here, one motor 101 and one shaft 102 are provided for three blowers 100. The motor 101 is disposed outside the scroll 110 of each blower 100. In the example shown in fig. 3, the motor 101 is disposed above three blowers 100 arranged vertically. The shaft 102 transmits the rotational driving force of the motor 101 to the impeller 200 of each blower 100. The blowers 100 are arranged such that the rotation axes of the impellers 200 of the blowers 100 coincide with each other. The shaft 102 is provided along the rotation axis of the impeller 200 of each blower 100. The center of each impeller 200 of each blower 100 is fixed to the shaft 102.

In the outdoor unit of the present embodiment, there are a plurality of discharge ports. In the example described here, three blowers 100 are provided, and each blower 100 has one discharge port 112, so that the outdoor unit has a total of three discharge ports 112. The number of the discharge ports 112 of the outdoor unit is not limited to three, and two or more discharge ports 112 may be provided.

As described above, the outdoor unit air outlet 11 is formed in the front panel 10 provided on the front surface of the casing 1. The outdoor unit air outlets 11 are provided in the same number as the discharge ports 112 in correspondence with the discharge ports 112. That is, in the configuration example described here, three outdoor unit outlets 11 are formed in the front panel 10. The position and size of each outdoor unit discharge port 11 are adjusted according to the position and size of each discharge port 112. That is, when the front panel 10 is properly attached to the casing 1, the discharge ports 112 are disposed at the outdoor unit discharge ports 11.

In this way, the plurality of discharge ports 112 are disposed at the outdoor unit discharge port 11 of the front panel 10. In the outdoor unit of the present embodiment, the front surface of the casing provided with the front panel 10 is a discharge port arrangement surface. The plurality of discharge ports 112 are arranged on the discharge port arrangement surface. On the other hand, the suction ports of the blowers 100 are arranged in the upper surface direction and the bottom surface direction of the casing 1. That is, the rotation shaft of the blower 100 is arranged in the up-down direction.

In the outdoor unit of the present embodiment, the sum of the widths of the plurality of discharge ports 112 is adjusted to be larger than the width of the blower chamber 3. The width of the outlet 112 and the width of the blower chamber 3 herein are widths in a horizontal direction parallel to the outlet arrangement surface and in a state where the casing 1 is mounted. That is, the sum of the widths of the discharge port 112 in the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing 1 is mounted is larger than the width of the blower chamber 3 in this direction. Since the rotation axis of the blower 100 is arranged along the vertical direction as described above, the direction horizontal in the state where the housing 1 is mounted may be referred to as a direction perpendicular to the rotation axis of the blower 100. Therefore, regarding the width of the discharge port 112 and the width of the blower chamber 3, in other words, the sum of the widths of the discharge port 112 in the direction perpendicular to the rotation axis of the blower 100 and parallel to the discharge port arrangement surface is larger than the width of the blower chamber 3 in this direction.

In the configuration example described here, the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing 1 is mounted is the left-right direction. That is, the dimension a shown in fig. 2 is the width of the discharge port 112 in the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing 1 is mounted. The dimension B shown in the figure is the width of the blower chamber 3 in the horizontal direction parallel to the discharge port arrangement surface in the state where the housing 1 is mounted. Also, each dimension of A1, A2, and A3 shown in fig. 1 is the width of the discharge port 112 in the horizontal direction in a state parallel to the discharge port arrangement surface and in which the housing 1 is mounted. The dimension B shown in the figure is the width of the blower chamber 3 in the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing 1 is mounted. The sum of the widths of the plurality of discharge ports 112 is adjusted to be larger than the width of the blower chamber 3. That is, the following relation of the formula (1) holds for the respective dimensions A1, A2, A3, and B.

A1+A2+A3>B…(1)

According to the outdoor unit of the refrigeration cycle apparatus of the present embodiment configured as described above, the outdoor unit is not increased in size, and even when the static pressure outside the outdoor unit is high, a high air volume can be obtained, and further, noise reduction and input reduction can be achieved.

In this configuration example, the rotation axis of the blower 100 is arranged along the vertical direction. That is, the rotation axis of the impeller 200 is arranged parallel to the discharge port arrangement surface. In this case, the fan diameter of the impeller 200 may be larger than one half of the width of the blower chamber 3 in the direction perpendicular to the discharge port arrangement surface, that is, in the front-rear direction. This can further increase the air volume, and can further reduce noise and input.

Next, an example of the structure of the blower 100 provided in the outdoor unit of the present embodiment will be described with reference to fig. 8 to 10. As described above, the blower 100 is a double suction centrifugal blower. The blower 100 further includes an impeller 200 as a centrifugal fan. The impeller 200 includes a main plate 201, a side plate 203, and a plurality of blades 210.

The main plate 201 is a disk-shaped member. A boss portion 202 is provided in a central portion of the main plate portion 201. A hole through which the shaft 102 passes is formed in the center of the boss portion 202. The plurality of blades 210 are radially arranged along the circumferential direction of the main plate portion 201 at the peripheral edge portion of the main plate portion 201. The blades 210 are provided on the two plate surfaces of the main plate 201.

One end of each blade 210 is connected to the main plate portion 201, and the other end is connected to the side plate portion 203. That is, the plurality of blades 210 are disposed between the main plate 201 and the side plate 203. The plurality of blades 210 are arranged at a fixed interval from each other in the circumferential direction of the main plate portion 201.

The side plate 203 is an annular member. The side plate 203 is fixed to an end of the plurality of blades 210 on the opposite side to the main plate 201 and on the outer peripheral side. The side plate portions 203 are provided on both plate surface sides of the main plate portion 201, respectively. The side plate 203 connects the plurality of blades 210, thereby maintaining the positional relationship of the tips of the respective blades 210 and reinforcing the plurality of blades 210.

The impeller 200 is driven by the motor 101 to rotate about a rotation axis. By the rotation of the impeller 200, the air outside the blower 100 is sucked from the suction port formed in the bell mouth of the scroll 110. Then, by the rotation of the impeller 200, the air sucked into the space surrounded by the main plate 201 and the plurality of blades 210 passes through the space between the adjacent blades 210 and the blades 210, and is sent out to the outside in the radial direction of the impeller 200.

The plurality of blades 210 of the impeller 200 each have a turbine blade portion 211 and a ciloke blade portion 212. The turbine blade 211 is provided on the inner peripheral side of the bisque blade 212 in the radial direction around the rotation axis of the impeller 200. Conversely, the ciloke wing 212 is disposed on the outer peripheral side of the turbine wing 211 in the radial direction around the rotation axis of the impeller 200. The turbine wing 211 constitutes a backward vane having an outlet angle of 90 degrees or less. The cilokes wing 212 constitutes a forward vane with an outlet angle of more than 90 degrees. Here, the outlet angle is an angle formed by the center line of the blade 210 and a tangent line of the outer diameter circle of the impeller 200 at the intersection point of the outer diameter circle of the impeller 200 and the center line of the blade 210. The boundaries of the turbine airfoil 211 and the ciloke airfoil 212 are shown in phantom in fig. 8. The ciloke wing 212 may not be provided. However, provision of the sirocco fins 212 can increase the air volume of the blower 100.

In particular, as shown in fig. 10, the plurality of blades 210 are formed such that the height protruding from the plate surface of the main plate 201 is lower toward the inner peripheral side from the inner peripheral end 204. The turbine blade 211 includes the inner peripheral end 204. The position of the inner peripheral end 204 is indicated by a one-dot chain line in fig. 8.

As shown in fig. 2, when the blower 100 is viewed from a direction parallel to the rotation axis of the blower 100, the turbine blade 211 is exposed from the suction port of the blower 100. This can improve the pressure recovery performance of the blower 100 by the turbine blade 211, and further reduce the input.

The shape of the heat exchanger 4 is not limited to an L-shape in plan view. For example, as shown in fig. 11, the heat exchanger 4 may have a U-shape or a C-shape in a plan view. Furthermore, a flat plate-shaped heat exchanger 4 may be used.

As shown in fig. 2 and 3, in the configuration example described here, a protruding portion 113 protruding toward the heat exchanger 4 is provided in a portion of the scroll 110 close to the main plate portion 201 of the impeller 200. Therefore, the distance C between the protruding portion 113, which is a portion of the scroll 110 close to the main plate portion 201 of the impeller 200, and the heat exchanger 4 is smaller than the distance D between the side plate portion 203 of the scroll 110 close to the impeller 200 and the heat exchanger 4. Thus, the air flow passing through the heat exchanger 4 is smoothly guided from a portion near the main plate portion 201 of the impeller 200 to a portion near the side plate portion 203 along the outer shape of the scroll 110, and flows into the suction port formed in the bell mouth of the scroll 110. This can improve the inflow of the air flow from the heat exchanger 4 to the blower 100 to reduce the pressure loss, thereby further reducing the input. Further, the front end of the protruding portion 113 of the scroll 110 may be formed in a circular arc shape. This allows the air flow passing through the heat exchanger 4 to be guided more smoothly, and the inflow of the air flow from the heat exchanger 4 to the blower 100 can be further improved.

In the above-described configuration example, the discharge port arrangement surface is the front surface of the housing 1. However, the discharge port arrangement surface is not limited to the front surface of the housing 1, and may be any surface of the housing 1. For example, fig. 12 to 15 show a configuration example in the case where the discharge port arrangement surface is the upper surface of the casing 1. As shown in fig. 12, a top plate 20 is provided on the upper surface of the portion of the casing 1 where the blower chamber 3 is disposed. The top plate 20 is formed with an outdoor unit discharge port 11. As shown in fig. 13, a grid 12 may be provided at the outdoor unit air outlet 11. In this case, the grill 12 may be attached to the top plate 20, or may be integrally provided with the top plate 20.

The top plate 20 has the same number of outdoor unit outlets 11 as the discharge ports 112 corresponding to the discharge ports 112. In the illustrated configuration example, three blowers 100 are provided in the blower chamber 3, and each blower 100 has one discharge port 112, so that the outdoor unit has a total of three discharge ports 112 as a whole. Therefore, three outdoor unit outlets 11 are formed in the top plate 20. The position and size of each outdoor unit discharge port 11 are adjusted according to the position and size of each discharge port 112. That is, when the top plate 20 is properly attached to the casing 1, the discharge ports 112 are disposed at the outdoor unit discharge ports 11.

In this way, the plurality of discharge ports 112 are disposed at the outdoor unit discharge port 11 of the top plate 20. In this configuration example, the upper surface of the housing provided with the top plate 20 is the discharge port arrangement surface. The plurality of discharge ports 112 are arranged on the discharge port arrangement surface. On the other hand, as shown in fig. 14 and 15, the suction ports of the blowers 100 are arranged in the front direction and the rear direction of the housing 1. That is, the rotation shaft of the blower 100 is disposed along the front-rear direction.

The sum of the widths of the plurality of discharge ports 112 in the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing 1 is mounted is larger than the width of the blower chamber 3 in this direction. In this example, the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing 1 is mounted includes at least the left-right direction. Therefore, in this example, in other words, the sum of the widths of the discharge port 112 in the direction perpendicular to the rotation axis of the blower 100 and parallel to the discharge port arrangement surface is larger than the width of the blower chamber 3 in this direction. In such a configuration example, the outdoor unit is not increased in size, and even when the static pressure outside the outdoor unit is high, a high air volume can be obtained, and further, noise reduction and input reduction can be achieved.

Embodiment 2.

Embodiment 2 of the present disclosure will be described with reference to fig. 16 to 29. Fig. 16 is a front view of the outdoor unit of the refrigeration cycle apparatus in a state in which the front panel is removed. Fig. 17 is a sectional view of an outdoor unit of the refrigeration cycle apparatus. Fig. 18 and 19 are front views of an outdoor unit of the refrigeration cycle apparatus. Fig. 20 is a front view showing a state in which a front panel is removed in a modification of an outdoor unit of the refrigeration cycle apparatus. Fig. 21 is a front view showing a state in which a front panel is removed in other example 1 of an outdoor unit of the refrigeration cycle apparatus. Fig. 22 is a front view showing a state in which a front panel is removed in the 2 nd other example of the outdoor unit of the refrigeration cycle apparatus. Fig. 23 is a cross-sectional view showing the 2 nd other example of the outdoor unit of the refrigeration cycle apparatus. Fig. 24 and 25 are front views showing other example 2 of the outdoor unit of the refrigeration cycle apparatus. Fig. 26 is a front view showing a state in which a front panel is removed in a modification of an outdoor unit of the refrigeration cycle apparatus. Fig. 27 is a front view showing a modification of the outdoor unit of the refrigeration cycle apparatus. Fig. 28 is a perspective view of a blower provided in a modified example of an outdoor unit of the refrigeration cycle apparatus. Fig. 29 is a cross-sectional view of a blower provided in a modified example of an outdoor unit of the refrigeration cycle apparatus.

In the structure of embodiment 1 described above, each of the blowers of the outdoor unit is provided with one discharge port. In contrast, embodiment 2 described herein is provided with two or more discharge ports in one blower. Hereinafter, the outdoor unit of the refrigeration cycle apparatus according to embodiment 2 will be described mainly with respect to differences from embodiment 1. The structure omitted from the description is basically the same as that of embodiment 1. In the following description, the same or corresponding structures as those in embodiment 1 are denoted by the same reference numerals as those used in the description of embodiment 1.

In an example of the outdoor unit of the refrigeration cycle apparatus of the present embodiment, as shown in fig. 16 and 17, two blowers 100 are provided in the blower chamber 3. Further, two discharge ports 112 are formed in the scroll 110 of each blower 100. Thus, the two blowers 100 each have two discharge ports 112, and thus the outdoor unit has a total of four discharge ports 112 as a whole.

As shown in fig. 18, a front panel 10 is provided on the front surface of the portion of the casing 1 where the blower chamber 3 is disposed. The front panel 10 is formed with an outdoor unit outlet 11. As shown in fig. 19, a grid 12 may be provided at the outdoor unit air outlet 11.

The front panel 10 has the same number of outdoor unit outlets 11 as the number of outlets 112 corresponding to the number of outlets 112. In the illustrated configuration example, the outdoor unit has a total of four discharge ports 112. Therefore, four outdoor unit outlets 11 are formed in the front panel 10. The position and size of each outdoor unit discharge port 11 are adjusted according to the position and size of each discharge port 112. That is, when the front panel 10 is properly attached to the casing 1, the discharge ports 112 are disposed at the outdoor unit discharge ports 11.

In this way, the plurality of discharge ports 112 are disposed at the outdoor unit discharge port 11 of the front panel 10. In this configuration example, the front surface of the housing provided with the front panel 10 is the discharge port arrangement surface. The plurality of discharge ports 112 are arranged on the discharge port arrangement surface. On the other hand, the suction ports of the blowers 100 are arranged in the left and right side surfaces of the housing 1. That is, the rotation shaft of the blower 100 is arranged in the left-right direction. The sum of the widths of the discharge port 112 in the direction parallel to the discharge port arrangement surface and horizontal with the housing 1 mounted therein is larger than the width of the blower chamber 3 in this direction. In this example, the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing 1 is mounted is the left-right direction. As shown in fig. 20, a blower chamber 3 may be provided on the upper side of the casing 1, and a machine chamber 2 may be provided on the lower side of the casing 1.

In such a configuration example, the outdoor unit is not increased in size, and even when the static pressure outside the outdoor unit is high, a high air volume can be obtained, and further, noise reduction and input reduction can be achieved. Further, by directing the suction port of the blower 100 in the direction of the left and right side surfaces of the casing 1, in particular, the air can be efficiently sucked from the outdoor unit suction port 5 provided in the side surface of the casing 1, and the air volume and the heat exchange efficiency can be improved.

In this configuration example, the rotation axis of the blower 100 is arranged in the left-right direction. That is, the rotation axis of the impeller 200 is arranged parallel to the discharge port arrangement surface. In this case, the fan diameter of the impeller 200 may be larger than one half of the width of the blower chamber 3 in the front-rear direction, which is the direction perpendicular to the discharge port arrangement surface. This can further increase the air volume, and can further reduce noise and input.

Next, other examples of the outdoor unit of the refrigeration cycle apparatus according to the present embodiment will be described with reference to fig. 21 to 29. First, fig. 21 shows a configuration of the outdoor unit of the refrigeration cycle apparatus according to the present embodiment in other example 1. In the other example 1, two blowers 100 are arranged in the up-down direction in the blower chamber 3. In fig. 21, one of two blowers 100 is illustrated. Further, two discharge ports 112 are formed in the scroll 110 of each blower 100. Thus, the two blowers 100 each have two discharge ports 112, and thus the outdoor unit has a total of four discharge ports 112 as a whole.

The plurality of discharge ports 112 are disposed at outdoor unit discharge ports formed in a front panel, not shown. In this configuration example, the front surface of the housing provided with the front panel is the discharge port arrangement surface. The plurality of discharge ports 112 are arranged on the discharge port arrangement surface. On the other hand, the suction ports of the blowers 100 are arranged in the upper surface direction and the bottom surface direction of the casing 1. That is, the rotation shaft of the blower 100 is arranged in the up-down direction. The sum of the widths of the discharge port 112 in the direction parallel to the discharge port arrangement surface and horizontal with the housing 1 mounted therein is larger than the width of the blower chamber 3 in this direction. In this example, the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing 1 is mounted is the left-right direction. In such a configuration example, the outdoor unit is not increased in size, and even when the static pressure outside the outdoor unit is high, a high air volume can be obtained, and further, noise reduction and input reduction can be achieved.

Next, fig. 22 to 25 show another example of the configuration of the outdoor unit of the refrigeration cycle apparatus according to the present embodiment. In the other example of the present invention 2, as shown in fig. 22 and 23, one blower 100 is provided in the blower chamber 3. Further, two discharge ports 112 are formed in the scroll 110 of the blower 100. Thus, one blower 100 has two discharge ports 112, and thus the outdoor unit has a total of two discharge ports 112.

As shown in fig. 24, a front panel 10 is provided on the front surface of the portion of the casing 1 where the blower chamber 3 is disposed. The front panel 10 is formed with an outdoor unit outlet 11. As shown in fig. 25, a grid 12 may be provided at the outdoor unit air outlet 11.

The front panel 10 has the same number of outdoor unit outlets 11 as the number of outlets 112 corresponding to the number of outlets 112. In the illustrated configuration example, the outdoor unit has a total of two discharge ports 112. Therefore, two outdoor unit air outlets 11 are formed in the front panel 10. The position and size of each outdoor unit discharge port 11 are adjusted according to the position and size of each discharge port 112. That is, when the front panel 10 is properly attached to the casing 1, the discharge ports 112 are disposed at the outdoor unit discharge ports 11.

In this way, the plurality of discharge ports 112 are disposed at the outdoor unit discharge port 11 of the front panel 10. In this configuration example, the front surface of the housing provided with the front panel 10 is the discharge port arrangement surface. The plurality of discharge ports 112 are arranged on the discharge port arrangement surface. On the other hand, the suction ports of the blowers 100 are arranged in the front surface direction and the rear surface direction of the housing 1. That is, the rotation shaft of the blower 100 is disposed along the front-rear direction. The sum of the widths of the discharge port 112 in the direction parallel to the discharge port arrangement surface and horizontal with the housing 1 mounted therein is larger than the width of the blower chamber 3 in this direction. In this example, the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing 1 is mounted is the left-right direction.

In such a configuration example, the outdoor unit is not increased in size, and even when the static pressure outside the outdoor unit is high, a high air volume can be obtained, and further, noise reduction and input reduction can be achieved. Further, by directing the suction port of the blower 100 in the rear surface direction of the casing 1, in particular, the air can be efficiently sucked from the outdoor unit suction port 5 provided in the rear surface of the casing 1, and the air volume and the heat exchange efficiency can be improved.

Fig. 26 to 29 show configurations of the other example 2 of the outdoor unit of the refrigeration cycle apparatus according to the present embodiment. In this modification, as shown in fig. 26, 28 and 29, two or more discharge ports 112 of one blower 100 are radially arranged when viewed from the front side of the casing 1. In the illustrated configuration, six discharge ports 112 are provided in one blower 100. The inner peripheral side of each discharge port 112 is arc-shaped centered on the rotation axis of blower 100. In other words, the inner peripheral side of each discharge port 112 is arc-shaped, which is formed by a part of the concentric circle of the suction port of the blower 100. The outer peripheral side of each discharge port 112 is arc-shaped, and is formed by a part of an ellipse centering on the rotation axis of blower 100.

As shown in fig. 27, the front panel 10 has the same number of outdoor unit outlets 11 as the discharge ports 112 and the discharge ports 112. In the illustrated configuration example, the outdoor unit has six discharge ports 112 in total. Accordingly, six outdoor unit air outlets 11 are formed in the front panel 10. The position and size of each outdoor unit discharge port 11 are adjusted according to the position and size of each discharge port 112. That is, when the front panel 10 is properly attached to the casing 1, the discharge ports 112 are disposed at the outdoor unit discharge ports 11.

In this way, the plurality of discharge ports 112 are disposed at the outdoor unit discharge port 11 of the front panel 10. In this configuration example, the front surface of the housing provided with the front panel 10 is the discharge port arrangement surface. The plurality of discharge ports 112 are arranged on the discharge port arrangement surface. On the other hand, the suction ports of the blowers 100 are arranged in the front surface direction and the rear surface direction of the housing 1. That is, the rotation shaft of the blower 100 is disposed along the front-rear direction. The sum of the widths of the discharge port 112 in the direction parallel to the discharge port arrangement surface and horizontal with the housing 1 mounted therein is larger than the width of the blower chamber 3 in this direction. In this example, the direction parallel to the discharge port arrangement surface and horizontal in the state where the housing 1 is mounted is the left-right direction.

In such a configuration example, the outdoor unit is not increased in size, and even when the static pressure outside the outdoor unit is high, a high air volume can be obtained, and further, noise reduction and input reduction can be achieved. Further, by directing the suction port of the blower 100 in the rear surface direction of the casing 1, in particular, the air can be efficiently sucked from the outdoor unit suction port 5 provided in the rear surface of the casing 1, and the air volume and the heat exchange efficiency can be improved. Further, by arranging the discharge ports 112 of the blower 100 radially, air can be sucked into the suction ports from between the respective discharge ports 112 uniformly, and air can be blown from the plurality of discharge ports 112, thereby achieving further high wind.

Industrial applicability

The present disclosure can be used in an outdoor unit of a refrigeration cycle apparatus including a double suction centrifugal blower in a blower chamber of a casing.

Description of the reference numerals

1: A housing;

2: a machine room;

3: a blower chamber;

4: a heat exchanger;

5: an outdoor unit suction inlet;

10: a front panel;

11: an outdoor unit blow-out port;

12: a grille;

20: a top plate;

100: a blower;

101: a motor;

102: a shaft;

110: a scroll;

111: a horn mouth;

112: a discharge port;

113: a protruding portion;

200: an impeller;

201: a main board section;

202: a boss portion;

203: a side plate portion;

204: an inner peripheral end portion;

210: a blade;

211: turbine wing portions;

212: cilobk wing.

Claims (10)

1. An outdoor unit of a refrigeration cycle apparatus, wherein,

The outdoor unit of the refrigeration cycle device is provided with a housing, wherein the housing is formed with: a machine chamber in which a compressor is housed; and a blower chamber which is partitioned from the machine chamber and accommodates therein a heat exchanger and a blower disposed on a secondary side of the heat exchanger,

The blower is a double suction centrifugal blower, and comprises:

an impeller having a plurality of blades arranged in a circumferential direction around a rotation axis; and

A scroll housing having a discharge port and two bell mouths as suction ports, and the impeller being disposed therein,

There is a plurality of said discharge openings,

The plurality of discharge ports are arranged on a discharge port arrangement surface of the housing,

The sum of widths of the plurality of discharge ports in a direction parallel to the discharge port arrangement surface and horizontal in a state where the housing is mounted is larger than a width of the blower chamber in the direction.

2. The outdoor unit of claim 1, wherein,

The plurality of blades of the impeller are respectively provided with a turbine wing part, the turbine wing part forms a backward blade with an outlet angle of less than 90 degrees,

The turbine blade portion is exposed from the suction port when the blower is viewed in a direction parallel to the rotation axis.

3. The outdoor unit of claim 2, wherein,

The plurality of blades of the impeller further include respective cilobk wings provided on the outer peripheral side of the turbine wing in a radial direction around the rotation axis, and forming a forward blade having an outlet angle of more than 90 degrees.

4. The outdoor unit of the refrigeration cycle apparatus according to any one of claims 1 to 3, wherein,

One of the blowers has more than two of the discharge ports,

The discharge port arrangement surface is a front surface of the housing,

The suction port of the blower is disposed toward an upper surface direction and a bottom surface direction of the housing.

5. The outdoor unit of the refrigeration cycle apparatus according to any one of claims 1 to 3, wherein,

One of the blowers has more than two of the discharge ports,

The discharge port arrangement surface is a front surface of the housing,

The suction port of the blower is disposed toward the left and right side surfaces of the housing.

6. The outdoor unit of the refrigeration cycle apparatus according to any one of claims 1 to 5, wherein,

The rotation shaft of the impeller is arranged in parallel with the discharge port arrangement surface,

The fan diameter of the impeller is larger than one half of the width of the blower chamber in a direction perpendicular to the discharge port arrangement surface.

7. The outdoor unit of the refrigeration cycle apparatus according to any one of claims 1 to 3, wherein,

One of the blowers has more than two of the discharge ports,

The discharge port arrangement surface is a front surface of the housing,

The suction port of the blower is disposed in a front direction and a rear direction of the housing.

8. The outdoor unit of claim 7, wherein,

The two or more discharge ports of one blower are arranged radially when viewed from the front side of the housing.

9. The outdoor unit of the refrigeration cycle apparatus according to any one of claims 1 to 8, wherein,

The distance between the portion of the scroll close to the main plate portion of the impeller and the heat exchanger is narrower than the distance between the portion of the scroll close to the side plate portion of the impeller and the heat exchanger.

10. The outdoor unit of claim 9, wherein,

The scroll has a protruding portion at a portion thereof close to the main plate portion of the impeller, the protruding portion protruding toward the heat exchanger, and a tip of the protruding portion has a circular arc shape.