Outdoor unit of air conditioner

Abstract

The utility model discloses an outdoor unit of an air conditioner. The outdoor unit of the air conditioner comprises a shell, the compressor is mounted in the shell, and an exhaust port is formed in the compressor; the liquid storage tank is installed in the shell and communicates with the compressor, and an air return opening is formed in the liquid storage tank; the outdoor heat exchanger is installed in the shell, a refrigerant inlet is formed in the outdoor heat exchanger, and the refrigerant inlet is connected with the exhaust port through an exhaust pipe; the exhaust pipe is provided with a damping pipeline between the outdoor heat exchanger and the exhaust port; the damping pipeline comprises transverse bent sections and longitudinal bent sections, the transverse bent sections extend from the exhaust port to the air return port in the overlook projection, the longitudinal bent sections are located on the sides, facing the refrigerant inlet, of the transverse bent sections in the overlook projection, and the transverse bent sections and the longitudinal bent sections are alternately arranged in the extending direction of the exhaust pipe. The outdoor unit of the air conditioner has the advantages of reducing vibration and stress, improving reliability, being low in noise and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an outdoor unit of an air conditioner Background Art

[0002] In the outdoor unit of an air conditioner in the related art, an exhaust pipe is connected to an outdoor heat exchanger through a compressor to provide power for the refrigerant of the outdoor unit of the air conditioner. At the moment when the compressor starts, a large acceleration will be generated, and the exhaust pipe will generate a large exhaust stress under the influence of the compressor

[0003] Therefore, it is necessary to lengthen the straight section of the exhaust pipe. At this time, another problem arises. Lengthening the straight section of the exhaust pipe will cause the vibration to increase, vibration stress will be generated, and resonance is likely to occur in the flow of the refrigerant in the exhaust pipe. The exhaust pipe is subjected to vibration stress for a long time, resulting in fatigue of the pipe wall, and then there is a risk of fracture, and the reliability is difficult to be guaranteed. Moreover, too large vibration of the exhaust pipe will also generate abnormal noise, affecting the user experience Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide an outdoor unit of an air conditioner, which has the advantages of reducing vibration and stress, improving reliability, and low noise

[0005] To achieve the above object, according to an embodiment of the utility model, an outdoor unit of an air conditioner is provided. The outdoor unit of the air conditioner includes: a housing; a compressor installed in the housing, the compressor being configured with an exhaust port; a liquid storage tank installed in the housing and communicating with the compressor, the liquid storage tank being configured with a return air port; an outdoor heat exchanger installed in the housing, the outdoor heat exchanger being configured with a refrigerant inlet, and the refrigerant inlet and the exhaust port are connected through an exhaust pipe; the exhaust pipe is configured with a shock-absorbing pipeline between the outdoor heat exchanger and the exhaust port and the outdoor heat exchanger; wherein, the shock-absorbing pipeline includes a plurality of horizontal bending sections and a plurality of vertical bending sections, the horizontal bending sections extend in the direction from the exhaust port to the return air port in the top view projection, the vertical bending sections are located on the side of the horizontal bending sections facing the refrigerant inlet in the top view projection, the bending directions of the plurality of horizontal bending sections are the same, the bending directions of the plurality of vertical bending sections are the same, and the horizontal bending sections and the vertical bending sections are alternately arranged along the extending direction of the exhaust pipe

[0006] The outdoor unit of the air conditioner according to the embodiment of the utility model has the advantages of reducing vibration and stress, improving reliability, and low noise

[0007] According to some specific embodiments of the present utility model, both the transverse bending section and the longitudinal bending section are multiple sections, and the transverse bending section and the longitudinal bending section are alternately arranged along the extending direction of the exhaust pipe. The bending directions of the multiple transverse bending sections are the same, and the bending directions of the multiple longitudinal bending sections are the same.

[0008] According to some specific embodiments of the present utility model, the multiple transverse bending sections are all at the same height, the multiple longitudinal bending sections are all at the same height, and the height of the transverse bending section is higher than the height of the longitudinal bending section.

[0009] According to some specific embodiments of the present utility model, the shock-absorbing pipeline further includes: multiple vertical connection sections, and each vertical connection section is connected between adjacent transverse bending sections and longitudinal bending sections. The multiple vertical connection sections are parallel to each other and all extend in the vertical direction.

[0010] Further, the length of the vertical connection section is less than 100 mm.

[0011] According to some specific embodiments of the present utility model, the multiple transverse bending sections sequentially include, from the exhaust port to the refrigerant inlet: a first transverse bending section and a second transverse bending section; the multiple longitudinal bending sections sequentially include, from the exhaust port to the refrigerant inlet: a first longitudinal bending section and a second longitudinal bending section. The first longitudinal bending section is located between the first transverse bending section and the second transverse bending section, and the second longitudinal bending section is located on the side of the second transverse bending section facing the refrigerant inlet.

[0012] Further, in the top view projection, the connection part of the first transverse bending section and the first longitudinal bending section is inside the outer contour of the compressor; in the top view projection, the connection part of the first longitudinal bending section and the second transverse bending section is outside the outer contour of the compressor.

[0013] According to some specific embodiments of the present utility model, in the top view projection, the distance between the connection part of the second transverse bending section and the second longitudinal bending section and the exhaust port is greater than the distance between the exhaust port and the suction port, and less than the maximum distance from the exhaust port to the outer contour of the liquid storage tank.

[0014] According to some specific embodiments of the present utility model, the included angle between the transverse bending section and the line connecting the exhaust port to the suction port in the top view projection is less than 30°.

[0015] According to some specific embodiments of the present utility model, the included angle between the transverse bending section and the longitudinal bending section in the top view direction is less than 90°.

[0016] According to some specific embodiments of the present utility model, a return air pipe is connected to the return air port of the liquid storage tank. The return air pipe is adapted to be connected to a four-way valve. The return air pipe is configured with a horizontal return air section and a vertical return air section. The horizontal return air section and the horizontal bending section are parallel to each other in a top view projection, and the vertical return air section and the vertical bending section are parallel to each other in a top view projection.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a schematic structural diagram inside an outdoor unit of an air conditioner in the prior art;

[0020] Figure 2 is a schematic structural diagram inside an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0021] Figure 3 is a partial schematic diagram of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0022] Figure 4 is a top view of the inside of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0023] Figure 5 is a top view of the compressor of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0024] Figure 6 is another top view of the compressor of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0025] Figure 7 is a schematic structural diagram of the exhaust pipe of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0026] Figure 8 is a top view of the exhaust pipe of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0027] Figure 9 is a schematic diagram of the principle of the torque of the exhaust pipe of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0028] Figure 10 is a broken line graph of the stress of the exhaust pipe of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0029] Reference numerals:

[0030] Prior art:

[0031] Outdoor unit 1' of air conditioner, compressor 200', outdoor heat exchanger 400', exhaust pipe 500';

[0032] The present utility model:

[0033] Outdoor unit 1 of air conditioner, housing 100, compressor 200, exhaust port 201, liquid storage tank 300, suction port 301,

[0034] Outdoor heat exchanger 400, refrigerant inlet 401, exhaust pipe 500, shock-absorbing pipeline 501,

[0035] Horizontal bending section 510, vertical bending section 520, vertical connection section 530, first horizontal bending section 511,

[0036] Second horizontal bending section 512, first vertical bending section 521, second vertical bending section 522,

[0037] Suction pipe 310, four-way valve 600, horizontal suction section 311, vertical suction section 312. Detailed implementation manners

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0039] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features.

[0040] In the description of the present utility model, the meaning of "a plurality" is two or more.

[0041] The outdoor unit 1 of the air conditioner according to an embodiment of the present utility model will be described below with reference to the drawings.

[0042] As Figures 1-10 shown, the outdoor unit 1 of the air conditioner according to an embodiment of the present utility model includes: a housing 100, a compressor 200, a liquid storage tank 300, and an outdoor heat exchanger 400.

[0043] The compressor 200 is installed inside the housing 100, and the compressor 200 is configured with an exhaust port 201. The liquid storage tank 300 is installed inside the housing 100 and is connected to the compressor 200, and the liquid storage tank 300 is configured with a return air port 301. The outdoor heat exchanger 400 is installed inside the housing 100, and the outdoor heat exchanger 400 is configured with a refrigerant inlet 401, and the refrigerant inlet 401 is connected to the exhaust port 201 through an exhaust pipe 500. The exhaust pipe 500 is configured with a shock-absorbing pipeline 501 between the outdoor heat exchanger 400 and the exhaust port 201 and the outdoor heat exchanger 400.

[0044] Among them, the shock-absorbing pipeline 501 includes a plurality of horizontal bending segments 510 and a plurality of vertical bending segments 520. The horizontal bending segments 510 extend in the direction from the exhaust port 201 to the return air port 301 in the top view projection. The vertical bending segments 520 are located on the side of the horizontal bending segments 510 facing the refrigerant inlet 401 in the top view projection. The bending directions of the multiple horizontal bending segments 510 are the same, and the bending directions of the multiple vertical bending segments 520 are the same. The horizontal bending segments 510 and the vertical bending segments 520 are alternately arranged along the extending direction of the exhaust pipe 500.

[0045] For example, the compressor 200 is specifically a rotary compressor. The motor of the compressor 200 rotates and drives the refrigerant to flow along the exhaust pipe 500. During the operation of the compressor 200, relatively large vibrations are generated and transmitted to the exhaust pipe 500, and the refrigerant flowing in the exhaust pipe 500 further generates relatively large torques. Both the horizontal bending segments 510 and the vertical bending segments 520 are configured as U-shaped elbows. The vibrations generated by the compressor 200 and the torques of the refrigerant flow are transmitted to the exhaust pipe 500, causing the pipe wall of the exhaust pipe 500 to be subjected to relatively large vibrations and torques. It can be understood that the stress magnitude of the exhaust pipe 500 depends on the torque. If the stress of the exhaust pipe 500 is too large, resonance is likely to occur, and it is also prone to fatigue and then fracture.

[0046] Among them, the stress of the exhaust pipe 500 satisfies N = F·L = m·a·L,

[0047] In the formula: N - the torque received by the pipe wall;

[0048] L - the force arm (m);

[0049] F - the force on the pipe wall (N);

[0050] m - the effective mass of the moving part of the pipeline (kg);

[0051] a - the acceleration at the moment when the compressor starts (m / s 2 );

[0052] For the exhaust pipe 500' of the compressor 200' in the prior art air conditioner outdoor unit 1', the direction of the exhaust pipe 500' extends directly from the exhaust port of the compressor 200' to the refrigerant inlet of the outdoor heat exchanger 400'. The lever arm L of the exhaust pipe 500 is relatively long, resulting in a relatively large torque N when closed, and the internal stress of the exhaust pipe 500' is too large and it is prone to damage.

[0053] According to the air conditioner outdoor unit 1 of the embodiment of the present invention, the exhaust pipe 500 of the compressor 200 passes through the configured shock-absorbing pipeline 501. The shock-absorbing pipeline 501 forms a horizontal bending section 510 and a vertical bending section 520, decomposing the lever arm of the exhaust pipe 500 into multiple shorter lever arms. The lever arm of each horizontal bending section 510 is relatively small and is blocked by the vertical bending section 520, which can effectively reduce the total torque N received by the exhaust pipe 500. And the shock-absorbing pipeline 501 also increases the flexibility of the exhaust pipe 500 by configuring the horizontal bending section 510 and the vertical bending section 520, indirectly reducing the received stress. According to the stress analysis by software simulation, as Figure 10 shown, the stress of the exhaust pipe 500 is reduced from the original 71.655 MPa to 33.386 MPa.

[0054] Similarly, for the vibration when the compressor 200 operates, as Figure 9 shown, the vibration direction of the compressor 200 is tangent to the outer contour direction of the compressor 200. When the vibration is transmitted to the exhaust pipe 500, for the exhaust pipe 500 with a straight pipeline in the prior art, the vibration received at the position with a larger diameter is more obvious. The magnitude of the vibration is represented by kinetic energy, and the kinetic energy generated at different particle positions satisfies the following formula:

[0055]

[0056] where, R 2 > R 1 Assume R 2 = 2R 1 Then That is, when the radius from the vibration center doubles, the energy increases by 4 times; at the same time, the energy is proportional to the mass. Therefore, the layout of the pipeline exhaust pipe 500 should be as close as possible to the compressor 200 to reduce the movement radius. And a shock-absorbing structure should be set to separate the particles at a relatively far distance from the vibration center. The horizontal bending section 510 and the vertical bending section 520 are arranged alternately along the extension direction of the exhaust pipe to reduce the kinetic energy transmitted from the compressor 200 to the exhaust pipe 500 at a relatively far position.

[0057] Among them, the "horizontal" and "vertical" in the horizontal bending section 510 and the vertical bending section 520 are not necessarily perpendicular to each other, as long as there is a certain deflection angle between them. The horizontal bending section 510 extends from the exhaust port 201 towards the return air port 301. When the compressor 200 starts instantaneously, the direction of vibration of the compressor 200 is tangent to its outer contour, that is, a force in the direction perpendicular to the direction of the horizontal bending section 510. The exhaust pipe 500 forms the horizontal bending section 510 and the vertical bending section 520 through the shock-absorbing pipeline 501, and can separate the straight exhaust pipe 500 into multiple horizontal bending sections 510 and multiple vertical bending sections 520 extending in different directions. The lever arm of each horizontal bending section 510 is small and will not bear a large vibration stress. The vertical bending section 520 is located on the side of the horizontal bending section 510 facing the refrigerant inlet 401, so that the shock-absorbing pipeline 501 is arranged into a broken-line pipeline extending in multiple different directions. The horizontal bending section 510 and the vertical bending section 520 disperse the vibration of the pipeline, and the horizontal bending section 510 and the vertical bending section 520 face different directions respectively, and the refrigerant inside will not generate large resonance, thus having good shock-absorbing performance, reducing the sound emitted by the outdoor unit 1 of the air conditioner, and preventing the exhaust pipe 500 from being fatigued due to long-term vibration stress. In addition, since the shock-absorbing pipeline 501 forms the horizontal bending section 510 and the vertical bending section 520, and the horizontal bending section 510 and the vertical bending section 520 form a broken line, there is also a certain deformation space at the connection of the horizontal bending section 510 and the vertical bending section 520 to provide shock absorption. Therefore, the vibration of the exhaust pipe 500 is further reduced, and the flow of the refrigerant in the exhaust pipe 500 is smoother.

[0058] Moreover, the horizontal bending section 510 and the vertical bending section 520 are arranged alternately. When the compressor 200 is started, the vibration of the compressor 200 is transmitted along the tangent direction of its outer contour. When it is transmitted to the exhaust pipe 500, after the vibration passes through the first horizontal bending section 510, the vertical bending section 520 plays a role in blocking the vibration for the horizontal bending section 510, so that the vibration generated when the vibration is transmitted to the downstream is very small. Further, only the refrigerant near the exhaust port 201 in the exhaust pipe 500 is subjected to a large vibration in the exhaust pipe 500, and the refrigerant in the exhaust pipe 500 will not continue to transmit the vibration downstream. When the refrigerant enters the downstream vertical bending section 520, the vibration of the refrigerant in the vibration direction is greatly reduced, thus avoiding resonance of the refrigerant in the exhaust pipe 500.

[0059] Therefore, the outdoor unit 1 of the air conditioner according to the embodiment of the present invention has the advantages of reducing vibration and stress, improving reliability, and having low noise.

[0060] In some specific embodiments of the present invention, such as Figure 3As shown, all the multi-segment horizontal bending segments 510 are at the same height, all the multi-segment vertical bending segments 520 are at the same height, and the height of the horizontal bending segments 510 is higher than that of the vertical bending segments 520.

[0061] After the exhaust pipe 500 is led out from the exhaust port 201, it is first connected to the horizontal bending segment 510 with a higher height. After being guided by the horizontal bending segment 510, it is connected downward to the vertical connecting segment 530, and then connected to the vertical bending segment 520 with a lower position, and finally connected upward to the vertical connecting segment 530. In this way, the horizontal bending segment 510, the vertical connecting segment 530, and the vertical bending segment 520 are connected in sequence to form an undulating flow path. Compared with the straight pipeline in the prior art, the vertical connecting segment 530 of the exhaust pipe 500 in this embodiment extends up and down with a small undulating distance, the gravitational potential energy that the refrigerant needs to overcome during flow is small, the energy utilization rate is higher, and the flow velocity at each position in the exhaust pipe 500 is also more uniform.

[0062] In some specific embodiments of the present utility model, such as Figure 3 and Figure 7 As shown, the shock-absorbing pipeline 501 further includes: a plurality of vertical connecting segments 530, each vertical connecting segment 530 is connected between adjacent horizontal bending segments 510 and vertical bending segments 520, and the plurality of vertical connecting segments 530 are parallel to each other and all extend in the vertical direction.

[0063] By constructing the vertical connecting segment 530, there is a relatively long buffer length between the horizontal bending segment 510 and the vertical bending segment 520, which can further reduce vibration, and the refrigerant inside the exhaust pipe 500 can flow more smoothly. The plurality of vertical connecting segments 530 all extend in the vertical direction. The refrigerant in the vertical connecting segment 530 between a part of the upstream horizontal bending segment 510 and the downstream vertical bending segment 520 flows from top to bottom, and the refrigerant in the vertical connecting segment 530 between a part of the upstream vertical bending segment 520 and the downstream horizontal bending segment 510 flows from bottom to top. The vertical connecting segment 530 forms a transition between the horizontal bending segment 510 and the vertical bending segment 520, playing a shock-absorbing role similar to a "spring". It can not only block the transmission of vibration, but also further reduce vibration by relying on its own deformation. And for the refrigerant inside the exhaust pipe 500, during the flow process between the horizontal bending segment 510 and the vertical bending segment 520, it can also be transitioned by the vertical connecting segment 530, the change in the flow direction of the refrigerant is small, and the refrigerant flows more smoothly.

[0064] Furthermore, the length of the vertical connection section 530 is less than 100 mm. Since the length of the vertical connection section 530 is relatively small, the gravitational potential energy that needs to be overcome during the refrigerant flow is also relatively small, and the compressor 200 can transfer the refrigerant more efficiently. Moreover, the flow velocity of the refrigerant at various positions of the exhaust pipe 500 is relatively uniform. In addition, the lengths of the transverse bending section 510 and the longitudinal bending section 520 can also be equal to the length of the vertical connection section 530, further improving the flow velocity of the refrigerant and the uniformity of the force. And since the length of the vertical connection section 530 is small, the total length of the exhaust pipe 500 is shortened, and the weight of the exhaust pipe 500 is reduced. Since the stress of the exhaust pipe 500 satisfies the torque N = F·L = m·a·L, reducing the weight of the exhaust pipe 500 can further reduce the stress of the exhaust pipe 500.

[0065] In some specific embodiments of the present invention, as Figures 5-8 shown, the multiple transverse bending sections 510 successively include, from the exhaust port 201 to the refrigerant inlet 401: a first transverse bending section 511 and a second transverse bending section 512. The multiple longitudinal bending sections 520 successively include, from the exhaust port 201 to the refrigerant inlet 401: a first longitudinal bending section 521 and a second longitudinal bending section 522. The first longitudinal bending section 521 is located between the first transverse bending section 511 and the second transverse bending section 512, and the second longitudinal bending section 522 is located on the side of the second transverse bending section 512 facing the refrigerant inlet 401.

[0066] Among them, the pipeline at the exhaust port 201 extends vertically upward and is connected to one end of the first transverse bending section 511. The downstream of the second longitudinal bending section 522 is connected to a vertically upward pipeline and is connected to the refrigerant inlet 401. The first transverse bending section 511 and the second transverse bending section 512 extend horizontally to share the transverse vibration stress. The vibration of the exhaust pipe 500 is relatively large at the end adjacent to the exhaust port 201. The first longitudinal bending section 521 blocks the stress between the first transverse bending section 511 and the second transverse bending section 512. The first transverse bending section 511, the second transverse bending section 512, the first longitudinal bending section 521, and the second longitudinal bending section 522 form a structure similar to a spring, absorbing the vibration of the end of the exhaust pipe 500 adjacent to the exhaust port 201, so that the vibration is difficult to be transmitted to the downstream. The vibration of the exhaust pipe 500 is effectively reduced, and the vibration of the compressor 200 will not be transmitted to the outdoor heat exchanger 400, and at the same time, the generation of noise is avoided.

[0067] Furthermore, as Figure 5 and Figure 6 shown, in the top view projection, the connection part of the first transverse bending section 511 and the first longitudinal bending section 521 is inside the outer contour of the compressor 200. In the top view projection, the connection part of the first longitudinal bending section 521 and the second transverse bending section 512 is outside the outer contour of the compressor 200.

[0068] Among them, in the top view direction, one end of the first horizontal bending section 511 coincides with the position of the exhaust port 201. The connection part of the first horizontal bending section 511 and the first vertical bending section 521 is inside the outer contour of the compressor 200, that is, the whole of the first horizontal bending section 511 is inside the outer contour of the compressor 200. The bending distance of the first horizontal bending section 511 is short. Since the torque N = F·L and the lever arm L is small, the stress of the transverse vibration is small.

[0069] Moreover, in the top view direction, the connection part of the first vertical bending section 521 and the second horizontal bending section 512 is outside the outer contour of the compressor 200, that is, the first vertical bending section 521 extends to the outside of the liquid storage pipe. Thus, the other end of the exhaust pipe 500 is closer to the outdoor heat exchanger 400. The horizontal bending section 510 and the vertical bending section 520 of the shock-absorbing pipeline 501 are more evenly distributed between the exhaust port 201 of the compressor 200 and the refrigerant inlet 401 of the outdoor heat exchanger 400. The layout of the exhaust pipe 500 between the compressor 200 and the outdoor heat exchanger 400 is relatively compact, and the space utilization rate is higher.

[0070] In some specific embodiments of the present utility model, as Figure 6 shown, in the top view projection, the distance between the connection part of the second horizontal bending section 512 and the second vertical bending section 522 and the exhaust port 201 is greater than the distance between the exhaust port 201 and the suction port 301, and less than the maximum distance from the exhaust port 201 to the outer contour of the liquid storage tank 300.

[0071] For example, in the top view projection, the bending length of the second horizontal bending section 512 is greater than the bending length of the first horizontal bending section 511. The extension distance of the second horizontal bending section 512 is kept within a certain range, which can not only maintain an appropriate stress range but also be as close as possible to the refrigerant inlet 401 of the outdoor heat exchanger 400. The layout of the exhaust pipe 500 is more compact and occupies less space.

[0072] In some specific embodiments of the present utility model, the included angle between the horizontal bending section 510 and the connection line from the exhaust port to the suction port in the top view projection is less than 30°. It can be understood that, as Figure 5 shown, in the top view direction, the horizontal bending section 510 extends from the exhaust port 201 to the suction port 301. It is not necessary that the extension direction of the horizontal bending section 510 is completely parallel or coincident with the connection line between the exhaust port 201 and the suction port 301. The offset angle between the extension direction of the horizontal bending section 510 and the connection line between the exhaust port 201 and the suction port 301 is within 30°. Within this range, while the exhaust pipe 500 meets the design of good vibration stress, the vertical bending section 520 of the exhaust pipe 500 is also easier to extend to the refrigerant inlet 401.

[0073] In some specific embodiments of the present utility model, as Figure 8 shown, the included angle between the horizontal bending section 510 and the vertical bending section 520 in the top view direction is less than 90°.

[0074] For example, the horizontal bending section 510 and the vertical bending section 520 can be directly connected, or a vertical connection section 530 can be connected between the horizontal bending section 510 and the vertical bending section 520. By forming an included angle less than 90° between the horizontal bending section 510 and the vertical bending section 520 in the top view direction, the stress received by the exhaust pipe 500 in the same direction will not be too large, and the refrigerant will also flow in different directions respectively. A larger turning angle is formed between the horizontal bending section 510 and the vertical bending section 520, avoiding the instantaneous acceleration being too large when the compressor 200 starts and the impact caused by the too fast refrigerant flow rate, and the inner wall of the exhaust pipe 500 being impacted. The included angle between the horizontal bending section 510 and the vertical bending section 520 is small, and the bending direction of the vertical bending section 520 is generally the same as the direction of the vibration stress, so that the vertical bending section 520 will not be subjected to a large stress, and the vertical connection section 530 can block the stress of the horizontal bending section 510 and reduce the risk of pipeline fatigue.

[0075] In some specific embodiments of the present utility model, as Figure 3 and Figure 5 shown, a return air pipe 310 is connected to the return air port 301 of the liquid storage tank 300. The return air pipe 310 is adapted to be connected to the four-way valve 600. The return air pipe 310 is configured with a horizontal return air section 311 and a vertical return air section 312. The horizontal return air section 311 and the horizontal bending section are parallel to each other in the top view projection, and the vertical return air section 312 and the vertical bending section 520 are parallel to each other in the top view projection.

[0076] Specifically, the horizontal return air section 311 and the vertical return air section 312 are at least arranged in a position adjacent to the return air port 301. By arranging the horizontal return air section 311 parallel to the horizontal bending section 510 and the vertical return air section 312 parallel to the vertical bending section 520 in the top view direction, the exhaust pipe 500 and the return air pipe 310 can be neatly arranged, occupying less space, and also avoiding interference between the exhaust pipe 500 and the return air pipe 310. And the refrigerant inside the exhaust pipe 500 and the return air pipe 310 both flow along the horizontal and vertical directions. The distances that the exhaust pipe 500 and the return air pipe 310 extend in the same direction are both short, and the stresses of the exhaust pipe 500 and the return air pipe 310 are both small, ensuring good reliability of the outdoor unit 1 of the air conditioner.

[0077] Other components and operations of the outdoor unit 1 of the air conditioner according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0078] In this application, the air conditioner performs the refrigeration cycle by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

[0079] The compressor compresses the refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0080] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state that has been condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant that has expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by performing a heat exchange with the material to be cooled by utilizing the latent heat of evaporation of the refrigerant. Throughout the cycle, the air conditioner can adjust the temperature of the indoor space.

[0081] The outdoor unit of the air conditioner refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit of the air conditioner includes the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0082] The indoor heat exchanger and the outdoor heat exchanger serve as condensers or evaporators. When the indoor heat exchanger serves as a condenser, the air conditioner serves as a heater in the heating mode. When the indoor heat exchanger serves as an evaporator, the air conditioner serves as a cooler in the cooling mode.

[0083] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0084] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An air conditioner outdoor unit, comprising: case; A compressor, the compressor being installed in the housing and having an exhaust port; A liquid storage tank, the liquid storage tank is installed in the shell and is connected to the compressor, and the liquid storage tank is configured with an air return port; An outdoor heat exchanger, the outdoor heat exchanger is installed in the shell, the outdoor heat exchanger is configured with a refrigerant inlet, and the refrigerant inlet is connected to the exhaust port through an exhaust pipe; Characterized in that the exhaust pipe is constructed with a shock absorbing pipeline between the outdoor heat exchanger and the exhaust port and the outdoor heat exchanger; Among them, the shock-absorbing pipeline includes multiple transverse bending sections and multiple longitudinal bending sections. The transverse bending section extends from the exhaust port to the return air port in the top view projection, and the longitudinal bending section is located on the side of the transverse bending section facing the refrigerant inlet in the top view projection. The bending directions of multiple transverse bending sections are the same, and the bending directions of multiple longitudinal bending sections are the same. The transverse bending sections and the longitudinal bending sections are alternately arranged along the extension direction of the exhaust pipe.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The plurality of transverse bending sections are all at the same height, the plurality of longitudinal bending sections are all at the same height, and the height of the transverse bending section is higher than the height of the longitudinal bending section.

3. The air conditioner outdoor unit according to claim 1, characterized in that: The shock absorbing pipeline also includes: A plurality of vertical connecting sections, each of which is connected between adjacent transverse bending sections and the longitudinal bending sections, and the plurality of vertical connecting sections are parallel to each other and extend in a vertical direction.

4. The air conditioner outdoor unit according to claim 3, characterized in that: The length of the vertical connecting section is less than 100 mm.

5. The air conditioner outdoor unit according to claim 1, characterized in that: The plurality of transverse bending sections sequentially include: a first transverse bending section and a second transverse bending section from the exhaust port to the refrigerant inlet; The multiple longitudinal bending sections from the exhaust port to the refrigerant inlet include: a first longitudinal bending section and a second longitudinal bending section in sequence, the first longitudinal bending section is located between the first transverse bending section and the second transverse bending section, and the second longitudinal bending section is located on the side of the second transverse bending section facing the refrigerant inlet.

6. The air conditioner outdoor unit according to claim 5, characterized in that: In a top view projection, a connection between the first transverse bending section and the first longitudinal bending section is located inside an outer contour of the compressor; In a top view projection, a connection between the first longitudinal bending section and the second transverse bending section is outside the outer contour of the compressor.

7. The air conditioner outdoor unit according to claim 5, characterized in that: In a top view projection, the distance between the connection between the second transverse bending section and the second longitudinal bending section and the exhaust port is greater than the distance between the exhaust port and the air return port, and is less than the farthest distance from the exhaust port to the outer contour of the liquid storage tank.

8. The air conditioner outdoor unit according to claim 1, characterized in that: The included angle between the transverse bending section and the line connecting the exhaust port to the return air port in top view is less than 30°.

9. The air conditioner outdoor unit according to claim 1, characterized in that: The included angle between the transverse bending section and the longitudinal bending section in the top view direction is less than 90°.

10. The air conditioner outdoor unit according to claim 1, characterized in that: The return air port of the liquid storage tank is connected to an air return pipe, which is suitable for being connected to a four-way valve. The air return pipe is constructed with a transverse air return section and a longitudinal air return section. The transverse air return section and the transverse bending section are parallel to each other in a top view projection, and the longitudinal air return section and the longitudinal bending section are parallel to each other in a top view projection.

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