CN210399238U - Outdoor unit of air conditioner and air conditioner - Google Patents

Abstract

The utility model discloses an outdoor unit of an air conditioner and an air conditioner, and relates to the technical field of air conditioners. In order to solve the problem that the air outlet space at the existing outdoor unit is narrow and the air intake is not smooth, the return air short circuit occurs, which affects the normal operation of the air conditioner. invention. The outdoor unit of the air conditioner includes a casing, the casing includes a first side wall, an air inlet and an air outlet are arranged on the first side wall, and a cross-flow fan, a heat exchanger and an air duct assembly are arranged in the casing, so The air duct assembly forms a ventilation duct for connecting the air inlet and the air outlet, the cross-flow fan is arranged in the ventilation duct, and the heat exchanger is arranged in the cross-flow fan and the air inlet between. The outdoor unit of the air conditioner of the utility model is used for the heat exchange of the air conditioner.

Description

Outdoor unit of air conditioner and air conditioner

technical field

The utility model relates to the technical field of air conditioners, in particular to an outdoor unit of an air conditioner and an air conditioner.

Background technique

The traditional outdoor unit of the air conditioner adopts an axial flow fan, and its air duct structure is air intake from the rear and side, and air out from the front. In the current buildings, the outdoor unit of the air conditioner is mostly placed in a reserved position outside the wall, which is generally a protruding stone slab, or a fixing frame for placing the outdoor unit is installed on the outdoor wall, and the outer wall is recessed. in the slot.

However, in the above-mentioned installation method of the outdoor unit, the back of the outdoor unit is close to the wall, resulting in a narrow space at the air inlet of the outdoor unit, and when the outdoor unit is working, the air inlet cannot flow smoothly at the rear, resulting in the air intake volume. Therefore, the air output from the air outlet is closer to the outdoor unit, and it may be sucked into the air inlet again, that is, a short circuit of the return air occurs, making the The high-temperature airflow after heat exchange is continuously heated, resulting in high temperature in the outdoor unit of the air conditioner, which in turn will cause the air conditioner to malfunction.

Utility model content

The embodiments of the present utility model provide an outdoor unit of an air conditioner and an air conditioner, which can ensure that the ventilation volume is not affected, make the air conditioner operate normally, and avoid the occurrence of short circuit of the return air.

In order to achieve the above object, the embodiment of the present utility model adopts the following technical solutions:

An outdoor unit of an air conditioner includes a casing, the casing includes a first side wall, an air inlet and an air outlet are arranged on the first side wall, and a cross-flow fan, a heat exchanger and an air duct are arranged in the casing The air duct assembly constitutes a ventilation duct for connecting the air inlet and the air outlet, the cross-flow fan is arranged in the ventilation duct, and the heat exchanger is arranged in the cross-flow fan and the air inlet.

The outdoor unit of the air conditioner provided by the embodiment of the present invention adopts a cross-flow fan. Since the cross-flow fan has a cylindrical structure, the air flow enters the inside of the fan from between the blades on one side of the cross-flow fan, and flows from the other side of the cross-flow fan. However, in the embodiment of the present invention, based on the characteristics of the cross-flow fan, the ventilation structure of the outdoor unit is changed to a single-sided air inlet and outlet structure, that is, the air inlet and the air outlet are both arranged on the first side wall of the casing, The cross-flow fan is arranged in the casing, and the axis line of the cross-flow fan is arranged in parallel with the first side wall, and the ventilation air duct formed by the air duct assembly restricts the flow direction of the air out of the cross-flow fan, so that the air flows from the air inlet. Enter into the housing, and enter into the fan by the fan blade of the cross-flow fan on the inlet side of the ventilation air duct, and then be discharged by the fan blade on the other side of the cross-flow fan, and the exhausted wind is blown along the ventilation air duct to the air outlet. The outside of the outdoor unit, so that the air inlet and the air outlet are arranged on the same side wall. During installation, the first side wall is arranged on the outside, away from the wall, to ensure that the air inlet can smoothly enter the air and avoid short circuit of the return air. , to ensure the normal operation of the outdoor unit.

Further, the air duct assembly includes a volute portion and a volute tongue portion, the volute portion is arranged along the circumferential direction of the cross-flow fan, and divides the inside of the casing into a first accommodating cavity and a second accommodating cavity , the cross-flow fan, the heat exchanger and the volute tongue are arranged in the first accommodating cavity, and a press assembly is arranged in the second accommodating cavity;

The volute portion is arranged on the first side wall and between the air inlet and the air outlet, and the volute portion extends from the first side wall to the periphery of the cross-flow fan. By extension, the volute tongue portion and the volute portion form the ventilation air duct communicating with the air inlet and the air outlet.

Further, the volute part includes a first air baffle plate, a circular arc plate and a second air baffle plate connected in sequence, the arc opening of the arc plate faces the cross-flow fan, and the arc plate runs along the The circumferential direction of the cross-flow fan extends, and the cross-flow fan is arranged between the arc plate and the volute tongue portion.

Further, the housing includes a second side wall, a third side wall and a fourth side wall, the second side wall is arranged opposite to the first side wall, and the third side wall and the fourth side wall are arranged between the first side wall and the second side wall and parallel to the axis of the cross-flow fan, the third side wall is connected to the first side wall, the second side wall and the The volute portion constitutes the first accommodating cavity, and the fourth side wall and the third side wall are arranged opposite to each other;

The volute portion includes a first side surface and a second side surface, the first side surface is arranged opposite to the second air baffle, and the second side surface is arranged opposite to the first side surface;

The angle formed by the first side surface and the first side wall is the first outlet angle α ₁ , and the angle opening of the first outlet angle is toward the third side wall, and satisfies: 40°≤ α ₁ ≤90°;

The included angle formed by the second air baffle and the first side wall is the second outlet angle α ₂ , and the angle opening of the second outlet angle is toward the fourth side wall, and meets: 90 °≤α ₂ ≤140°.

Further, the included angle formed by the first air baffle plate and the plane parallel to the first side wall is the first inlet included angle α ₃ , and the included angle opening of the first inlet included angle is toward the third side wall, and satisfy: 0°≤α ₃ ≤90°;

The included angle formed by the second side surface and the plane parallel to the first side wall is the second inlet included angle α ₄ , and the included angle opening of the second inlet included angle is toward the air inlet, and satisfies: 70 °≤α ₄ ≤150°.

Further, the diameter D of the cross-flow fan satisfies: 150mm≤D≤350mm.

Further, the heat exchanger is a flat plate heat exchanger, and the flat plate heat exchanger is parallel to the first side wall, or an angle is formed between the flat plate heat exchanger and the first side wall;

Or the heat exchanger is a heat exchanger with an L-shaped cross-section, and the angle opening of the L-shaped structure of the heat exchanger with an L-shaped cross-section is arranged opposite to the cross-flow fan;

Or the heat exchanger is a U-shaped heat exchanger, and the U-shaped structure opening of the U-shaped heat exchanger is arranged opposite to the cross-flow fan;

Or the heat exchanger is a heat exchanger with a multi-section bending section, and the opening of the bending section of the cross-section bending section is arranged opposite to the cross-flow fan.

Further, the heat exchangers are provided with at least two groups.

Further, the air inlet is opened on the second side wall and/or the third accommodating cavity.

Further, there are two cross-flow fans, each of the cross-flow fans is provided with the heat exchanger and the air duct assembly, and the first side wall corresponds to one of the cross-flow fans. The fan is provided with one air outlet and one air inlet, and the first side wall is provided with another air outlet and another air inlet corresponding to the other cross-flow fan.

Further, the two air outlets are arranged between the two air inlets.

Further, the two air inlets are arranged between the two air outlets.

Another embodiment of the present invention further provides an air conditioner, comprising an indoor unit and the outdoor unit of the air conditioner according to any of the above technical solutions, wherein the outdoor unit and the indoor unit are connected by a connecting pipe.

In the air conditioner provided by the embodiment of the present invention, the outdoor unit adopts a cross-flow fan, and the ventilation structure is changed to a single-sided air inlet and outlet structure, that is, the air inlet and the air outlet are located on the same side wall, so that the space at the air inlet is increased. Therefore, after heat exchange, the air volume blown out from the air outlet increases, the pressure at the air outlet increases, and the air supply distance increases, so that the air blown from the air outlet can be sent to the outdoor unit. Position the air outlet to prevent the air blown from the air outlet from being re-inhaled by the air inlet, and cycle heating, effectively preventing the occurrence of short circuit in the return air, so that the outdoor unit can operate normally, thereby improving the heat exchange efficiency of the outdoor unit and ensuring the use effect of the air conditioner.

Description of drawings

1 is a schematic structural diagram of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

Fig. 2 is the front view of the outdoor unit of the air-conditioning room according to the embodiment of the utility model;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the first three-dimensional cross-sectional view of the outdoor unit of the air conditioner according to the embodiment of the present utility model;

5 is a second perspective cross-sectional view of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

6 is a first structural schematic diagram of a heat exchanger with an L-shaped cross-section in the outdoor unit of the air conditioner according to the embodiment of the present invention;

7 is a schematic diagram of a second structure of a heat exchanger with an L-shaped cross-section used in the outdoor unit of the air conditioner according to the embodiment of the present utility model;

8 is a schematic structural diagram of a flat plate heat exchanger used in the outdoor unit of the air conditioner according to the embodiment of the present invention, and the flat plate heat exchanger is parallel to the first side wall;

9 is a schematic structural diagram of a flat plate heat exchanger used in the outdoor unit of the air conditioner according to the embodiment of the present invention, and the flat plate heat exchanger and the first side wall forming an included angle;

10 is a schematic structural diagram of a heat exchanger whose cross-section is a multi-section bending structure in the outdoor unit of the air conditioner according to the embodiment of the present invention;

11 is a schematic structural diagram of adopting three-sided air intake in the outdoor unit of the air conditioner according to the embodiment of the present invention;

12 is a schematic structural diagram of the outdoor unit of the air conditioner according to the embodiment of the present utility model using two-sided air intake;

13 is a schematic structural diagram of two groups of heat exchangers formed by adopting a flat plate heat exchanger and a heat exchanger with an L-shaped cross-section in the outdoor unit of the air conditioner according to the embodiment of the present invention;

14 is a schematic structural diagram of two sets of flat plate heat exchangers used in the outdoor unit of the air conditioner according to the embodiment of the present invention;

15 is a schematic structural diagram of two sets of cross-flow fans and two sets of L-shaped heat exchangers in the outdoor unit of the air conditioner according to the embodiment of the present invention, and two air outlets are arranged between the two air inlets;

16 is a schematic structural diagram of two sets of cross-flow fans and two sets of L-shaped heat exchangers in the outdoor unit of the air conditioner according to the embodiment of the present invention, and two air inlets are arranged between the two air outlets;

17 is a schematic structural diagram of two sets of cross-flow fans and one set of flat plate heat exchangers used in the outdoor unit of the air conditioner according to the embodiment of the present invention, and two air inlets are arranged between two air outlets;

Fig. 18 is a schematic diagram showing the structural dimension of the outdoor unit of the air conditioner according to the embodiment of the present invention.

Reference numerals: 1. Shell; 2. Air inlet; 3. Air outlet; 4. Cross-flow fan; 5. Heat exchanger; 6. First air baffle; 7. First accommodating cavity; Cavity; 9, volute part; 10, volute tongue part; 11, ventilation air duct; 12, first side wall; 13, second side wall; 14, third side wall; 15, fourth side wall; 16, Circular arc plate; 17, the second air baffle; 18, the first side; 19, the second side.

Detailed ways

The outdoor unit of the air conditioner and the air conditioner according to the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, rather than indicating Or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

An outdoor unit of an air conditioner, as shown in FIG. 1-FIG. 5, includes a casing 1, the casing 1 includes a first side wall 12, and an air inlet 2 and an air outlet 3 are arranged on the first side wall 12, so The casing 1 is provided with a cross-flow fan 4, a heat exchanger 5 and an air duct assembly, and the air duct assembly forms a ventilation air duct 11 for connecting the air inlet 2 and the air outlet 3. The fan 4 is arranged in the ventilation duct 11 , and the heat exchanger 5 is arranged between the cross-flow fan 4 and the air inlet 2 .

The outdoor unit of the air conditioner provided by the embodiment of the present invention adopts the cross-flow fan 4. Since the cross-flow fan 4 has a cylindrical structure, the air flow enters the fan from between the blades on one side of the cross-flow fan 4, and flows from the cross-flow fan 4 to the inside of the fan. 4 is discharged between the fan blades on the other side, and the embodiment of the present utility model, based on the characteristics of the cross-flow fan 4, changes the ventilation structure of the outdoor unit to a single-sided air inlet and outlet structure, that is, the air inlet 2 and the air outlet 3 are arranged in the outer casing. On the first side wall 12 of The flow direction of the air out of the cross-flow fan 4, that is, the wind enters the casing 1 from the air inlet 2, and enters the fan through the fan blade of the cross-flow fan 4 on the inlet side of the ventilation duct 11, and then passes through the cross-flow fan 4 on the other side. The fan blades on the side are exhausted, and the exhausted air is blown to the air outlet 3 along the ventilation duct 11 and is discharged to the outside of the outdoor unit, so that the air inlet 2 and the air outlet 3 are arranged on the same side wall. The wall 12 is arranged on the outside, away from the wall, so as to ensure that the air inlet 2 can smoothly enter the air, avoid the short circuit phenomenon of the return air, and ensure the normal operation of the outdoor unit.

When in use, as shown in FIG. 2 , since the first side wall 12 is on the outside, away from the wall, the space between the air inlet 2 and the air outlet 3 is not restricted, the air inlet 2 can smoothly enter the air, and the air intake volume increases. As shown in Figure 3, after heat exchange by the heat exchanger 5, it is sent to the air outlet 3 along the ventilation duct 11. Because the volute part 9 and the volute tongue part 10 restrict the flow direction of the air, and the size of the ventilation duct 11 After the determination, the size of the air outlet 3 is determined. On the premise that the size of the air outlet 3 is determined, the larger the air intake, the greater the pressure at the air outlet 3, and the longer the air supply distance, so that the air blown out of the air outlet 3 will be blown to It is far away from the outdoor unit, so as to prevent the air blown from the air outlet 3 from being sucked into the air inlet 2 again, and avoid the high temperature airflow after heat exchange being heated by circulation. Therefore, it can effectively prevent the short circuit of the return air and ensure the normal operation of the outdoor unit. .

The above-mentioned air duct assembly includes a volute portion 9 and a volute tongue portion 10. As shown in FIG. 1 to FIG. The first accommodating cavity 7 and the second accommodating cavity 8 are provided with the cross-flow fan 4, the heat exchanger 5 and the volute portion 10, and the second accommodating cavity 8 is provided with a press assembly; the volute portion 10 is arranged on the first side wall 12 and between the air inlet 2 and the air outlet 3, and the volute portion 10 is formed by the The first side wall 12 extends toward the periphery of the cross-flow fan 4 , and the volute tongue portion 10 and the volute portion 9 form the ventilation air duct 11 that communicates with the air inlet 2 and the air outlet 3 . . In the embodiment of the present invention, a second accommodating cavity 8 for accommodating the press assembly is formed on one side of the volute portion 9 , and a first accommodating cavity for accommodating the cross-flow fan 4 , the heat exchanger 5 and the volute tongue portion 10 is formed on the other side. 7. The cross-flow fan 4 and the heat exchanger 5 are arranged in the first accommodating chamber 7. On the one hand, the high-temperature airflow after heat exchange is prevented from entering the placement area of the compressor assembly, which increases the temperature of the compressor assembly and affects the normal operation of the compressor assembly. On the other hand, the wind entering through the air inlet 2 enters the first accommodating cavity 7 after heat exchange, and reaches the air outlet 3 along the ventilation duct 11, and then is sent out from the air outlet 3 to ensure the ventilation inside the first accommodating cavity 7 smooth.

Preferably, in the embodiment of the present invention, the second accommodating cavity 8 can be arranged on the rear side of the cross-flow fan 4, that is, the compressor assembly is arranged close to the rear of the outdoor unit. The outdoor unit of this structure is relatively narrow in the lateral direction and thicker in the longitudinal direction. It can be placed in the narrow space formed between the two walls, as shown in Figure 7; the second accommodating cavity 8 can also be arranged on the side of the cross-flow fan 4, that is, the compressor assembly and the cross-flow fan 4 are arranged laterally, The outdoor unit of this structure is wider horizontally and thinner vertically, and can be placed close to the wall, as shown in Figure 6. The above two structures can be optimally designed according to different installation environments, so as to adapt to different house structures and ensure the normal operation of the outdoor unit.

It should be pointed out that the compressor component in the embodiment of the present invention is a system component in the outdoor unit of the air conditioner, which is a commonly used prior art, and therefore will not be described in detail here.

In order to enable the volute portion 9 and the volute tongue portion 10 to form a ventilation air duct 11 that restricts the air outlet direction, as shown in FIG. 3 and FIG. The arc plate 16 and the second air baffle plate 17, preferably, the first air baffle plate 6 is connected to the side wall disposed opposite to the first side wall 12, and the second air baffle plate 17 is connected to the first air baffle plate 17. The side walls 12 are connected, the arc opening of the arc plate 16 faces the cross-flow fan 4, the arc plate 16 extends along the circumferential direction of the cross-flow fan 4, and the cross-flow fan 4 is arranged at the between the circular arc plate 16 and the volute tongue portion 10 . The first air baffle 6 and the side of the volute tongue portion 10 adjacent to the air inlet 2 together form the entrance of the ventilation air duct 11, the arc plate 16 extends along the circumferential direction of the cross-flow fan 4, and the second air baffle 17 and the volute. The side of the tongue portion 10 adjacent to the air outlet 3 constitutes the outlet of the ventilation air duct 11, and is communicated with the air outlet 3. When the incoming air passes through the heat exchanger 5 for heat exchange, the inlet of the ventilation air duct 11 enters the interior of the cross-flow fan 4, It is discharged from the other side of the cross-flow fan 4, and the exhausted air continues to flow in the direction of the air outlet 3 along the direction restricted by the arc plate 16. Due to the smooth transition of the arc plate 16, when the wind blows out from the cross-flow fan 4, it hits the air outlet 3. The instantaneous turning angle on the arc plate 16 is reduced, which reduces the pressure loss of the wind and ensures the wind speed.

Further, the above-mentioned housing 1 includes a second side wall 13 , a third side wall 14 and a fourth side wall 15 . As shown in FIGS. 4 and 5 , the second side wall 13 is opposite to the first side wall 12 The third side wall 14 and the fourth side wall 15 are arranged between the first side wall 12 and the second side wall 13, and are arranged parallel to the axis of the cross-flow fan 4. The The third side wall 14 , the first side wall 12 , the second side wall 13 and the volute portion 9 constitute the first accommodating cavity 7 , the fourth side wall 15 and the third side The walls 14 are arranged opposite to each other; as shown in FIG. 18 , the volute portion 10 includes a first side surface 18 and a second side surface 19 , the first side surface 18 is arranged opposite to the second air baffle 17 , and the second The side surface 19 is arranged opposite to the first side surface 18 .

Since the size of the outlet of the ventilation duct 11 limits the size of the air outlet, when the outlet is too small, the air outlet will be unsmooth. The angle is the first outlet angle α ₁ , and the angle opening of the first outlet angle faces the third side wall 14 and satisfies: 40°≤α ₁ ≤90°; the second air baffle 17 The angle formed with the first side wall 12 is the second outlet angle α ₂ , and the angle opening of the second outlet angle faces the fourth side wall 15 and satisfies: 90°≤α ₂ ≤ 140°. As shown in FIG. 18 , when the included angle of the first outlet is greater than 90° and the included angle of the second outlet is greater than 140°, the outlet of the ventilation air duct 11 is too large, and the flow duct has a great diffusive effect, which will cause flow separation and cause outdoor The noise of the unit increases and the capacity decreases, which affects the performance of the outdoor unit. When the included angle of the first outlet is less than 40° and the included angle of the second outlet is less than 90°, both the first side 18 and the second air baffle 17 will form a The inclined plane forms a shrinkage flow, which increases the outlet wind speed, increases the noise, and reduces the air volume, which affects the normal performance of the outdoor unit. After testing, when the first outlet angle and the second outlet angle are within the above range, the effect is optimal.

In the embodiment of the present invention, the first air baffle 6 and the second side 19 constitute the entrance of the ventilation air duct 11. In order to enable the wind to enter the ventilation air duct 11 smoothly, the first air baffle in the embodiment of the present invention 6 The angle formed with the plane parallel to the first side wall 12 is the first inlet angle α ₃ , and the angle opening of the first inlet angle faces the third side wall 14 and satisfies: 0 °≤α ₃ ≤90°; the included angle formed by the second side surface 19 and the plane parallel to the first side wall 12 is the second inlet included angle α ₄ , and the included angle of the second inlet included angle is open toward the air inlet 2 and satisfy: 70°≤α ₄ ≤150°. As shown in FIG. 18 , when the included angle of the first inlet is greater than 90°, a concave area is formed between the first air baffle 6 and the first side wall 12 , and part of the wind will enter this area, forming a vortex and increasing noise , when the second inlet angle is greater than 150°, the space of the volute tongue portion 10 will be seriously reduced; when it is less than 70°, the effective length of the heat exchanger will be reduced, and the area of the air inlet will be reduced, affecting the performance of the outdoor unit. After testing, the first inlet angle and the second inlet angle are within the above-mentioned range, and the effect is optimal.

In the cross-flow fan 4 provided by the embodiment of the present invention, if the diameter is too small, the air intake will be affected, and if the diameter is too large, the overall size of the outdoor unit will increase, which is inconvenient for installation. After testing, the diameter D of the cross-flow fan 4 is as follows: As shown in Figure 18, it satisfies: 150mm≤D≤350mm, and the effect is the best.

In the embodiment of the present invention, the heat exchanger 5 is a flat plate heat exchanger 5, and the flat plate heat exchanger 5 is parallel to the first side wall 12, or the flat plate heat exchanger 5 is parallel to the first side wall 12. An angle is formed between the side walls 12, as shown in Figures 8 and 9; the structure of forming an angle between the flat plate heat exchanger 5 and the first side wall 12, that is, installation along the inclined surface, this structure adds the heat exchanger 5 The length can increase the heat exchange area of the heat exchanger 5, and compared with the structure parallel to the first side wall 12, the heat exchange effect is better. In addition, the flat plate heat exchanger 5 is simple in structure and convenient in installation, and is suitable for outdoor units of various structures.

In the embodiment of the present invention, the heat exchanger 5 is a heat exchanger 5 with a multi-section bending section, and the cross-section fan 4 has an opening of the bending section of the multi-section bending heat exchanger 5 and the cross-flow fan 4 Relatively arranged, as shown in Figure 10, the number of bending sections and the bending angle of the multi-section bending heat exchanger 5 are selected according to the size of the interior space of the outer casing 1 of the outdoor unit, which can be better suitable for outdoor with different structures. in the machine.

In the embodiment of the present invention, the heat exchanger 5 is a heat exchanger 5 with an L-shaped cross-section, and the angle opening of the L-shaped structure of the heat exchanger 5 with an L-shaped cross-section is connected to the cross-flow fan 4 . Relatively arranged, as shown in Figures 6 and 7; the L-shaped structure angle of the L-shaped heat exchanger is preferably 45° to 90°, and the heat exchange area of the L-shaped heat exchanger 5 is increased, which can improve the outdoor unit. heat transfer effect.

In the embodiment of the present invention, the heat exchanger 5 is a U-shaped heat exchanger 5, and the U-shaped structure opening of the U-shaped heat exchanger 5 is arranged opposite to the cross-flow fan 4, As shown in Figure 11. The heat exchanger 5 with a U-shaped cross-section further increases the heat exchange area and further improves the heat exchange effect of the outdoor unit.

In order to further improve the heat exchange efficiency, the heat exchanger 5 provided in the embodiment of the present invention is provided with at least two groups, as shown in FIG. 13 and FIG. 14 . The heat exchanger 5 can be set up in multiple groups. One end of the multiple groups of heat exchangers 5 is connected to the inner wall of the casing 1, and the other end can be connected to the volute tongue portion 10, and can also be connected to the inner wall of the first side wall 12, and is sucked from the air inlet 2. The air passes through multiple sets of heat exchangers 5 for multiple heat exchange, which further improves the heat exchange efficiency of the outdoor unit.

In order to reduce the noise generated when the outdoor unit is working, the air inlet 2 is provided on the second side wall 13 and/or the third side wall 14 in the embodiment of the present invention, as shown in FIGS. 4 , 5 and 14 . 11. As shown in Figure 12. When the multi-face air intake structure is adopted, it is preferable to use the heat exchanger 5 with an L-shaped cross-section and the heat exchanger 5 with a U-shaped cross-section. Due to the increase of the tuyere, the air intake volume increases, and the heat exchange area of the heat exchanger 5 increases. Further improve the heat exchange efficiency.

Specifically, the above-mentioned two side walls are both parallel to the axis line of the cross-flow fan 4. Therefore, the air inlet 2 or both of the second side wall 13 and the third side wall 14 can be opened. That is, a structure with two-sided or three-sided air intake is provided, as shown in Figure 11 and Figure 12, so that when the rotation speed of the cross-flow fan 4 is constant, the air intake volume of the outdoor unit can be increased, that is, the heat exchange efficiency is improved. Therefore, in the On the premise that there is no need to improve the heat exchange efficiency, since the multiple air inlets 2 increase the air intake, the speed of the cross-flow fan 4 can be reduced to ensure the same heat exchange efficiency, and the speed of the cross-flow fan 4 can be reduced by reducing the speed. Noise from the outdoor unit.

In the outdoor unit of the air conditioner provided by the embodiment of the present invention, a plurality of cross-flow fans 4 can be provided, and each cross-flow fan 4 is provided with a heat exchanger 5 correspondingly, and an air inlet 2 is correspondingly provided on the first side wall 12 and the air outlet 3, but multiple cross-flow fans 4 are installed, although the heat exchange efficiency can be improved, the overall size of the casing 1 will also be correspondingly increased, resulting in the problem that the installation of the outdoor unit remains unchanged. Therefore, the embodiment of the present invention Preferably, there are two cross-flow fans 4. As shown in Figure 15, Figure 16, and Figure 17, each of the cross-flow fans 4 is provided with the heat exchanger 5 and the air duct assembly. The first side wall 12 is provided with the air outlet 3 and the air inlet 2 corresponding to each of the cross-flow fans 4 . By arranging two cross-flow fans 4 , better heat exchange efficiency can be ensured, and an oversized casing 1 can be avoided to cause inconvenience in installation.

When two cross-flow fans 4 are used. The two air outlets 3 can be arranged between the two air inlets 2. As shown in FIG. 15, since the two air outlets 3 are provided with the volute portion 9, that is, the two ventilation air ducts 11 are not connected to each other, which can prevent When the two airflows circulate in the two air ducts, a turbulence is formed to ensure the smooth outflow of the airflow.

The heat exchanger 5 in the above structure can be a flat plate heat exchanger 5, a heat exchanger 5 with a multi-section bending structure, an L-shaped heat exchanger 5 or a U-shaped heat exchanger 5 in cross-section. The heat exchanger 5 has the same structure and is symmetrically arranged in the first accommodating cavity 7 on both sides of the outer shell 1. The two first accommodating cavities 7 can also adopt the above-mentioned multi-faceted air intake structure to increase the heat exchange efficiency or reduce the outdoor air intake. machine noise.

If the two air inlets 2 are arranged between the two air outlets 3, as shown in FIG. 16, at this time, the two first accommodating cavities 7 are connected, and the airflow entering from the two air inlets 2 is in the first accommodating cavity 7. The air flows to the two ventilation air ducts 11 on both sides respectively, so that the air pressure in the first accommodating chamber 7 is more balanced, and the outdoor unit vibration caused by the unbalanced air pressure in the two first accommodating chambers 7 is avoided.

The two first accommodating cavities 7 in the above structure are connected to form a accommodating cavity, and two heat exchangers 5 with the same structure are symmetrically arranged in the accommodating cavity, and when a heat exchanger 5 with an L-shaped or U-shaped cross-section is used , the included angle openings of the L-shaped structure or the openings of the U-shaped structure are respectively arranged opposite to the corresponding cross-flow fans 4 , as shown in FIG. 16 . When the flat plate heat exchanger 5 is used, the two flat plate heat exchangers 5 can form a certain angle with the first side wall 12 and be symmetrically arranged in the accommodating cavity. In terms of cost, it is preferable to use a flat plate heat exchanger 5, which is arranged in parallel with the first side wall 12 and covers the two air inlets 2, as shown in FIG. 17 .

Further, for the structure in which the two air inlets 2 are arranged between the two air outlets 3, since the two air inlets 2 are arranged adjacent to each other, the two air inlets 2 can be set as one large air inlet 2, The air inlet 2 corresponds to the above-mentioned two first accommodating chambers 7 that communicate with each other, which further improves the smoothness of the air intake from the air inlet 2 .

Furthermore, by adopting the mechanism form of two cross-flow fans 4 , multiple sets of heat exchangers 5 corresponding to each cross-flow fan 4 can be arranged to meet different heat exchange requirements.

An embodiment of the present invention further provides an air conditioner, comprising an indoor unit and the outdoor unit of the air conditioner according to any of the above technical solutions, wherein the outdoor unit and the indoor unit are connected by a connecting pipe.

In the air conditioner provided by the embodiment of the present invention, since the outdoor unit of the air conditioner used is the same as the outdoor unit of the air conditioner described in the above solution, the two can solve the same technical problem and achieve the same technical effect, that is, it can ensure The air inlet 2 can enter the air smoothly to avoid the short circuit phenomenon of the return air, thereby ensuring the normal operation of the outdoor unit of the air conditioner.

In the description of this specification, the particular features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (13)

1. An outdoor unit of an air conditioner, characterized in that it comprises a casing, the casing comprises a first side wall, an air inlet and an air outlet are arranged on the first side wall, and a cross-flow fan, A heat exchanger and an air duct assembly, the air duct assembly constitutes a ventilation air duct for connecting the air inlet and the air outlet, the cross-flow fan is arranged in the ventilation air duct, and the heat exchanger is arranged between the cross-flow fan and the air inlet. 2 . The outdoor unit of an air conditioner according to claim 1 , wherein the air duct assembly comprises a volute part and a volute tongue part, and the volute part is arranged along the circumferential direction of the cross-flow fan and connects 2 . The inside of the casing is divided into a first accommodating cavity and a second accommodating cavity, the cross-flow fan, the heat exchanger and the volute tongue are arranged in the first accommodating cavity, and the second accommodating cavity is A press assembly is provided; The volute portion is arranged on the first side wall and between the air inlet and the air outlet, and the volute portion extends from the first side wall to the periphery of the cross-flow fan. By extension, the volute tongue portion and the volute portion form the ventilation air duct communicating with the air inlet and the air outlet. 3 . The outdoor unit of an air conditioner according to claim 2 , wherein the volute part comprises a first air baffle plate, a circular arc plate and a second air baffle plate connected in sequence, and the circular arc plate has a circular arc plate. 4 . The arc opening faces the cross-flow fan, the circular arc plate extends along the circumferential direction of the cross-flow fan, and the cross-flow fan is arranged between the circular arc plate and the volute portion. 4 . The outdoor unit of an air conditioner according to claim 3 , wherein the housing comprises a second side wall, a third side wall and a fourth side wall, and the second side wall is connected to the first side wall. 5 . Oppositely arranged, the third side wall and the fourth side wall are arranged between the first side wall and the second side wall, and are arranged parallel to the axis of the cross-flow fan, and the third side wall The first accommodating cavity is formed with the first side wall, the second side wall and the volute portion, and the fourth side wall is arranged opposite to the third side wall; The volute portion includes a first side surface and a second side surface, the first side surface is arranged opposite to the second air baffle, and the second side surface is arranged opposite to the first side surface; The angle formed by the first side surface and the first side wall is the first outlet angle α ₁ , and the angle opening of the first outlet angle is toward the third side wall, and satisfies: 40°≤ α ₁ ≤90°; The included angle formed by the second air baffle and the first side wall is the second outlet angle α ₂ , and the angle opening of the second outlet angle is toward the fourth side wall, and meets: 90 °≤α ₂ ≤140°. 5 . The outdoor unit of an air conditioner according to claim 4 , wherein the included angle formed by the first air baffle plate and the plane parallel to the first side wall is the first inlet included angle α ₃ , so the The included angle opening of the first inlet angle is toward the third side wall, and satisfies: 0°≤α ₃ ≤90°; The included angle formed by the second side surface and the plane parallel to the first side wall is the second inlet included angle α ₄ , and the included angle opening of the second inlet included angle is toward the air inlet, and satisfies: 70 °≤α ₄ ≤150°. 6 . The outdoor unit of an air conditioner according to claim 5 , wherein the diameter D of the cross-flow fan satisfies: 150mm≦D≦350mm. 7 . 7. The outdoor unit of an air conditioner according to any one of claims 1-6, wherein the heat exchanger is a flat plate heat exchanger, and the flat plate heat exchanger is parallel to the first side wall, or An included angle is formed between the flat plate heat exchanger and the first side wall; Or the heat exchanger is a heat exchanger with an L-shaped cross-section, and the angle opening of the L-shaped structure of the heat exchanger with an L-shaped cross-section is arranged opposite to the cross-flow fan; Or the heat exchanger is a U-shaped heat exchanger, and the U-shaped structure opening of the U-shaped heat exchanger is arranged opposite to the cross-flow fan; Or the heat exchanger is a heat exchanger with a multi-section bending section, and the opening of the bending section of the cross-section bending section is arranged opposite to the cross-flow fan. 8 . The outdoor unit of an air conditioner according to claim 1 , wherein at least two groups of the heat exchangers are provided. 9 . 9 . The outdoor unit of an air conditioner according to claim 4 , wherein the air inlet is opened on the second side wall and/or the third side wall. 10 . 10 . The outdoor unit of an air conditioner according to claim 1 , wherein there are two cross-flow fans, and the heat exchanger is correspondingly arranged at each cross-flow fan. 11 . and the air duct assembly, the first side wall is provided with one of the air outlets and one of the air inlets corresponding to one of the cross-flow fans, and the first side wall corresponds to another of the cross-flow fans Another said air outlet and another said air inlet are provided. 11 . The outdoor unit of an air conditioner according to claim 10 , wherein the two air outlets are arranged between the two air inlets. 12 . 12 . The outdoor unit of an air conditioner according to claim 10 , wherein the two air inlets are arranged between the two air outlets. 13 . 13. An air conditioner, comprising an indoor unit and the outdoor unit according to any one of claims 1-12, wherein the indoor unit and the outdoor unit are connected by a connecting pipe.

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