Volute drainage structure and mobile air conditioner

Abstract

The utility model discloses a volute drainage structure and a mobile air conditioner, and belongs to the technical field of air conditioners. The volute drainage structure comprises a volute and a water collecting tray, the volute is provided with an air outlet and an air duct communicated with the air outlet, and the air outlet is arranged upwards; the water collecting tray is connected with the volute and is arranged side by side with the air outlet; the water collecting tray is provided with a drain hole communicated with the air duct; the inner wall of the air duct is provided with an installation part used for installing the motor, the installation part is located below the drainage hole, the peripheral edge of the installation part protrudes out of the inner wall, and the installation part is configured to guide water drained out of the drainage hole to the position below the installation part in the peripheral direction of the installation part. According to the utility model, the drainage of the condensate water from the outside of the volute is avoided, the possibility that the condensate water is led along a wire body outside the volute to cause the damage to an electric control device is reduced, the drainage and drainage of the condensate water from the inside of the volute are realized, the risk that the condensate water wets the motor is also reduced, and the safety and reliability of the motor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a volute drainage structure and a mobile air conditioner. Background Art

[0002] During the cooling process of the mobile air conditioner, condensed water usually accumulates near the air outlet. In order to effectively discharge the accumulated condensed water, a drainage structure is often provided on the outside of the volute in the related art, and the condensed water is discharged along the outside of the volute through the drainage structure. However, since there are many linear bodies on the outer surface of the volute, the condensed water can easily flow along the linear bodies to the electronic control device, causing damage to the electronic control device. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a volute drainage structure, which can reduce the risk of condensed water flowing to the outer surface of the volute.

[0004] The utility model also provides a mobile air conditioner comprising the volute drainage structure.

[0005] According to the volute drainage structure of the first aspect embodiment of the utility model, it includes: a volute and a water collecting tray, the volute is provided with an air outlet and an air duct connected to the air outlet, and the air outlet is arranged upward; the water collecting tray is connected to the volute and arranged side by side with the air outlet, and the water collecting tray is provided with a drainage hole connected to the air duct; wherein the inner wall of the air duct is provided with a mounting portion for mounting a motor, the mounting portion is located below the drainage hole, the peripheral edge of the mounting portion protrudes from the inner wall, and is configured to guide the water discharged from the drainage hole along the circumference of the mounting portion to below the mounting portion.

[0006] The volute drainage structure according to the embodiment of the utility model has at least the following beneficial effects:

[0007] The volute drainage structure of the utility model embodiment is achieved by setting a water collecting tray connected to the volute, and the water collecting tray is arranged side by side with the air outlet, so that condensed water generated near the air outlet can be collected by the water collecting tray; the water collecting tray is provided with a drainage hole connected to the air duct, so that the condensed water in the water collecting tray can flow into the air duct through the drainage hole, and there is no need to drain the condensed water from the outer surface of the volute, thereby reducing the possibility of condensed water being drained along the outer line of the volute and causing damage to the electronic control components; the inner wall of the air duct is provided with a mounting portion for mounting the motor, and the peripheral edge of the mounting portion protrudes from the inner wall, and the peripheral edge of the mounting portion can guide the condensed water discharged from the drainage hole along the circumference of the mounting portion to the bottom of the mounting portion, which not only realizes the drainage and discharge of condensed water from the inside of the volute, but also reduces the risk of condensed water contacting the motor.

[0008] According to some embodiments of the present invention, a first water retaining rib is provided at an end of the mounting portion away from the inner wall, and the first water retaining rib is configured to guide water to the bottom of the mounting portion along the circumference of the mounting portion.

[0009] According to some embodiments of the present invention, the first water retaining rib forms an annular structure along the circumference of the mounting portion.

[0010] According to some embodiments of the utility model, the mounting portion is provided with a mounting groove for accommodating the motor, and the bottom wall of the mounting groove is provided with a wire outlet along the up and down directions of the volute, and the annular structure is provided with a first notch, and the first notch is located on the lower side of the annular structure.

[0011] According to some embodiments of the present invention, along the axial direction of the volute, the height of the first water retaining rib protruding from the end surface of the end portion is greater than or equal to 5 mm.

[0012] According to some embodiments of the present invention, the drainage hole and the mounting portion are located on the same side wall in the air duct.

[0013] According to some embodiments of the utility model, an expansion section is provided at one end of the drainage hole connected to the air duct, and the aperture of the expansion section gradually increases or increases in a step-like manner in the direction toward the air duct; or, a second notch is opened on the side wall of the expansion section, and the second notch is inclined downward.

[0014] According to some embodiments of the utility model, the mounting portion is provided with a mounting groove for accommodating the motor, and the bottom wall of the mounting groove is provided with a wire outlet along the up and down directions of the volute, and the outer side wall of the volute is provided with at least one rib, and at least one of the ribs is distributed below the wire outlet and is configured to separate the water flow flowing out along the wire outlet.

[0015] According to some embodiments of the utility model, the mounting portion is provided with a mounting groove for accommodating the motor, and the bottom wall of the mounting groove is provided with a wire outlet along the up and down directions of the volute, and the outer wall of the volute is provided with a second water retaining rib, which is located below the wire outlet and protrudes from the volute in a direction away from the air duct.

[0016] The mobile air conditioner according to the second embodiment of the utility model comprises the volute drainage structure described in the first embodiment, and the volute drainage structure is arranged at the upper part of the mobile air conditioner.

[0017] The mobile air conditioner according to the embodiment of the utility model has at least the following beneficial effects:

[0018] The mobile air conditioner adopts the volute drainage structure of the first aspect of the embodiment. The mobile air conditioner is provided with a water collecting pan connected to the volute. The water collecting pan is arranged at a position adjacent to the air outlet, so that it can collect condensed water generated near the air outlet; the water collecting pan is provided with a drainage hole connected to the air duct. Therefore, the condensed water in the water collecting pan can flow into the air duct through the drainage hole, and there is no need to drain the condensed water from the outer surface of the volute, thereby reducing the possibility of condensed water being drained along the external line of the volute and causing damage to the electronic control components, thereby reducing the risk of electrical failure of the mobile air conditioner; an installation portion is provided on the inner wall of the air duct to install the motor, and the peripheral edge of the installation portion protrudes from the inner wall. The peripheral edge of the installation portion can guide the condensed water discharged from the drainage hole along the circumference of the installation portion to the bottom of the installation portion, which not only realizes the drainage and discharge of condensed water from the inside of the volute, but also reduces the risk of condensed water contacting the motor, thereby improving the reliability of the mobile air conditioner.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 It is a structural schematic diagram of the volute drainage structure and the heat exchanger when assembled in one embodiment of the utility model;

[0022] Figure 2 A top view of the volute drainage structure and the heat exchanger when assembled in one embodiment of the utility model;

[0023] Figure 3 An exploded view of a volute drainage structure and a heat exchanger according to an embodiment of the utility model;

[0024] Figure 4 for Figure 2 The enlarged view of point A in the middle;

[0025] Figure 5 It is a schematic diagram of a first shell in a volute drainage structure according to an embodiment of the utility model;

[0026] Figure 6 It is a front view of the first shell in the volute drainage structure of one embodiment of the utility model;

[0027] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0028] Figure 8 for Figure 1 Enlarged view of point C in the middle;

[0029] Fig. 9It is a schematic diagram of the connection between the volute drainage structure and the water receiving tray in one embodiment of the utility model;

[0030] Fig.10 A bottom view of a volute drainage structure according to an embodiment of the present utility model;

[0031] Fig.11 It is a schematic diagram of a mobile air conditioner according to an embodiment of the utility model.

[0032] Figure Number:

[0033] Volute drainage structure 1000; Mobile air conditioner 2000;

[0034] Scroll 100; first shell 110; buckle 111; second shell 120; slot 121; air outlet 130; air duct 140; inner wall 141; mounting portion 150; first water retaining rib 151; annular structure 1511; first notch 1512; mounting slot 152; wire outlet 1521; rib 160; second water retaining rib 170; gap 180;

[0035] Water collecting tray 200; drainage hole 210; second notch 211;

[0036] Motor 300; heat exchanger 400; water receiving tray 500; wind wheel 600; electric control box 700. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0039] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] Some embodiments of the present invention provide a volute drainage structure 1000, which is suitable for a mobile air conditioner 2000. Figures 1 to 11 The volute drainage structure 1000 is shown for illustration.

[0042] Reference Figure 1 and Figure 2 As shown, in the embodiment of the utility model, the volute drainage structure 1000 includes a volute 100 and a water collecting tray 200, wherein the air outlet 130 of the volute 100 is arranged upwardly, and it can be understood that the volute drainage structure 1000 is arranged at the upper part of the mobile air conditioner 2000. Based on this, the air outlet 130 of the volute 100 is arranged upwardly to realize the top air outlet of the mobile air conditioner 2000. An air duct 140 connected to the air outlet 130 is arranged in the volute 100. When the mobile air conditioner 2000 is cooled, the cold air in the air duct 140 is sent to the outside from the air outlet 130.

[0043] The water collecting pan 200 is connected to the volute 100 and is arranged near the air outlet 130. Specifically, in order to collect the condensed water generated near the air outlet 130, the water collecting pan 200 can be arranged on the upper side of the volute 100 and located near the air outlet 130. For example, the air outlet 130 and the water collecting pan 200 are arranged side by side along the length direction of the volute 100, or the air outlet 130 and the water collecting pan 200 are arranged side by side along the width direction of the volute 100, that is, the air outlet 130 and the water collecting pan 200 are placed on the same horizontal line, and the two are in adjacent positions. In some embodiments, the air outlet 130 can be located on the upper side of the water collecting pan 200, that is, the water collecting pan 200 is located at a lower position than the air outlet 130, so that the condensed water generated near the air outlet 130 can fall into the water collecting pan 200 more easily under the action of gravity.

[0044] Reference Figure 2 , Figure 4 and Figure 6As shown, in the embodiment of the utility model, the water collecting tray 200 is provided with a drain hole 210 connected to the air duct 140. Specifically, the drain hole 210 can be provided on the bottom wall of the water collecting tray 200, that is, provided at the lower part of the side wall of the water collecting tray 200. For example, the inlet of the drain hole 210 is located on the bottom wall of the water collecting tray 200, and the outlet of the drain hole 210 is located on the inner wall 141 of the air duct 140. It can be understood that the outlet of the drain hole 210 is located at the lower side of the inlet of the drain hole 210. Based on this, the condensed water in the water collecting tray 200 can flow from the water collecting tray 200 to the air duct 140 through the drain hole 210 under the action of gravity, so that the condensed water is drained to the inside of the volute 100 without draining the condensed water through the outer surface of the volute 100. In addition, the outlet of the drain hole 210 is located on the inner wall 141, so that the water discharged from the drain hole 210 can flow downward along the inner wall 141, thereby reducing the flow rate of the water flow.

[0045] Reference Figure 3 As shown, in the embodiment of the utility model, a wind wheel 600 and a motor 300 for driving the wind wheel 600 to rotate are provided inside the volute 100, and the motor 300 is provided at the center position inside the volute 100. Based on this, the inner wall 141 of the air duct 140 is provided with a mounting portion 150 for mounting the motor 300. Since the mounting portion 150 is located below the drain hole 210, in order to reduce the risk of condensed water discharged from the drain hole 210 dripping onto the motor 300, which may easily cause water to enter the motor 300, in this embodiment, the circumference of the mounting portion 150 protrudes from the inner wall 141, and is configured to guide the water discharged from the drain hole 210 to the bottom of the mounting portion 150 along the circumference of the mounting portion 150.

[0046] Specifically, refer to Figure 5 and Figure 6 As shown, in the embodiment of the utility model, the mounting portion 150 is connected to the inner wall 141 at one end of the air duct 140 along the axial direction of the volute 100, and the periphery of the mounting portion 150 can be extended along the axial direction of the volute 100. The periphery of the mounting portion 150 is arranged around the motor 300 so that the mounting portion 150 can be sleeved on the motor 300. Based on this, when the water discharged from the drain hole 210 drips downward under the action of gravity, the periphery of the mounting portion 150 can prevent the water from dripping directly onto the motor 300. The water dripping on the periphery of the mounting portion 150 can be as Figure 6 As shown by the arrow in FIG. 1 , the water moves along the circumference of the mounting portion 150 . Under the guidance of the circumference of the mounting portion 150 , the water can drip to the bottom of the mounting portion 150 . Fig.10 As shown, in this embodiment, the bottom of the volute 100 has a gap 180, and the water dripping below the mounting portion 150 can be discharged from the volute 100 through the gap 180, thereby achieving the drainage and discharge of condensed water.

[0047] Reference Figure 1 , Figure 3 and Fig.10 As shown, in the embodiment of the utility model, the volute 100 adopts a split design. Specifically, the volute 100 includes a first shell 110 and a second shell 120, and the first shell 110 and the second shell 120 are connected along the axial direction of the volute 100 to enclose and form an air duct 140. The heat exchanger 400 is connected to an end of the second shell 120 facing away from the first shell 110. The mounting portion 150 is connected to the inner wall 141 of the first shell 110, and its periphery can be extended toward the second shell 120. In this embodiment, when the first shell 110 and the second shell 120 are connected, the periphery of the first shell 110 and the periphery of the second shell 120 have a gap 180.

[0048] Reference Fig. 9 As shown, in the embodiment of the utility model, the volute drainage structure 1000 can be connected to the water receiving tray 500 of the mobile air conditioner 2000, and the water receiving tray 500 is arranged at the lower side of the volute 100. Based on this, the condensed water in the air duct 140 flows out of the volute 100 from the gap 180, and the condensed water flowing out can drip into the water receiving tray 500. It can be understood that the setting of the water receiving tray 500 can facilitate the user to clean up the condensed water uniformly.

[0049] In order to simplify the assembly process of the volute 100, refer to Figure 3 and Figure 5 As shown, in the embodiment of the utility model, the first housing 110 and the second housing 120 can be connected by snapping, so as to shorten the assembly time of the volute 100, improve the assembly efficiency of the volute 100, and facilitate the assembly, repair and replacement of the wind wheel 600 and the motor 300 in the volute 100. Specifically, the outer peripheral wall of the first housing 110 can be provided with a plurality of buckles 111, and the plurality of buckles 111 can be arranged at intervals along the circumference of the first housing 110. Correspondingly, the outer peripheral wall of the second housing 120 can be provided with a plurality of slots 121, and the plurality of slots 121 can be arranged at intervals along the circumference of the second housing 120, and the plurality of slots 121 and the plurality of buckles 111 can be snapped in one-to-one correspondence.

[0050] The volute drainage structure 1000 of the utility model embodiment is provided with a water collecting pan 200 connected to the volute 100, and the water collecting pan 200 is arranged at a position adjacent to the air outlet 130, so that it can collect condensed water generated near the air outlet 130; the water collecting pan 200 is provided with a drainage hole 210 connected to the air duct 140, so that the condensed water in the water collecting pan 200 can flow into the air duct 140 through the drainage hole 210, and there is no need to drain the condensed water from the outer surface of the volute 100, which reduces The condensed water is drawn along the outer line of the volute 100 and may cause damage to the electronic control components. The inner wall 141 of the air duct 140 is provided with a mounting portion 150 for mounting the motor 300. The peripheral edge of the mounting portion 150 protrudes from the inner wall 141. The peripheral edge of the mounting portion 150 can guide the condensed water discharged from the drainage hole 210 to the bottom of the mounting portion 150 along the circumference of the mounting portion 150, which not only realizes the drainage of the condensed water from the inside of the volute 100, but also reduces the risk of the condensed water contacting the motor 300.

[0051] It is understandable that, in order to facilitate the assembly of the motor 300, the mounting portion 150 may be a semi-open structure, with its opening disposed in the air duct 140. Based on this, in order to reduce the risk of water from the drain hole 210 splashing when dripping onto the edge of the mounting portion 150 and entering the mounting portion 150 from the opening to wet the motor 300, refer to Figure 5 and Figure 6 As shown, in the embodiment of the utility model, the end of the mounting portion 150 away from the inner wall 141 is provided with a first water retaining rib 151, that is, the first water retaining rib 151 can be provided on an end surface of the mounting portion 150 facing the second housing 120. The first water retaining rib 151 is configured to guide water to the bottom of the mounting portion 150 along the circumference of the mounting portion 150. Specifically, the first water retaining rib 151 extends from the end surface of the mounting portion 150 facing the second housing 120 along the axial direction of the volute 100 toward the second housing 120. Since the first water retaining rib 151 protrudes from the mounting portion 150, the first water retaining rib 151 can resist the splashing of water when dripping to the periphery of the mounting portion 150, thereby reducing the possibility of water entering the mounting portion 150.

[0052] Since water splashing onto the first water retaining rib 151 will adhere to the outer peripheral wall of the first water retaining rib 151, the water on the first water retaining rib 151 moves along the outer peripheral wall of the first water retaining rib 151 under the action of gravity until it drips from the first water retaining rib 151 to the bottom of the air duct 140. In the embodiment of the utility model, the first water retaining rib 151 is arranged around the circumference of the mounting portion 150. It should be noted that the projection of the first water retaining rib 151 in the axial direction of the volute 100 can be annular, can be a single arc, or can be a multi-segment arc arranged at intervals.

[0053] Reference Figure 5 and Figure 6As shown, in the embodiment of the utility model, the first water retaining rib 151 forms an annular structure 1511 along the circumference of the mounting portion 150, that is, the first water retaining rib 151 is a circular ring protruding from the end surface of the mounting portion 150 facing the second housing 120. It can be understood that when the motor 300 is assembled on the mounting portion 150, the annular structure 1511 can surround the motor 300, so that the motor 300 can resist water from multiple directions, thereby improving the protection of the motor 300.

[0054] Reference Figure 5 , Figure 6 and Figure 8 As shown, in the embodiment of the utility model, the mounting portion 150 may be provided with a mounting groove 152 for accommodating the motor 300. It is understood that the mounting portion 150 protrudes from the inner wall 141 of the first housing 110. Based on this, the mounting portion 150 may be a hollow structure, and the mounting groove 152 suitable for accommodating the motor 300 may be provided therein. It is understood that the motor 300 is connected with a connecting wire for connecting a power supply or an electric control system. In order to allow the connecting wire to pass through the air duct 140, the bottom wall of the mounting groove 152 is provided with a wire outlet 1521 along the up and down direction of the volute 100. The wire outlet 1521 penetrates the mounting portion 150 and the inner wall 141 of the air duct 140 along the axial direction of the volute 100, so that the connecting wire can pass through the volute 100. In this embodiment, the first water retaining rib 151 can resist water from multiple directions from entering the mounting portion 150, thereby reducing the possibility that the water in the air duct 140 flows out of the volute 100 from the wire outlet 1521.

[0055] It is understandable that when the water dripping onto the annular structure 1511 moves along the outer peripheral wall of the first water retaining rib 151 to the lower end of the annular structure 1511, it may adhere to the outer peripheral wall of the first water retaining rib 151 without dripping downwards, and the water adhering to the outer peripheral wall of the first water retaining rib 151 may flow out of the volute from the outlet 1521. Based on this, referring to Figure 5 and Figure 6 As shown, in the embodiment of the utility model, the annular structure 1511 is provided with a first notch 1512, and the first notch 1512 is located at the lower side of the annular structure 1511. Since the annular structure 1511 is provided with the first notch 1512, the two ends of the annular structure 1511 are respectively located at the two sides of the outlet 1521, and both ends of the annular structure 1511 have a certain gap with the outlet 1521. Based on this, the water flowing to the end of the annular structure 1511 can directly drip downward from the end of the annular structure 1511, which increases the difficulty of the water moving along the outer peripheral wall of the first water retaining rib 151 entering the outlet 1521, thereby reducing the possibility of the water adhering to the outer peripheral wall of the first water retaining rib 151 flowing out of the outlet 1521.

[0056] Reference Figure 6As shown, the dotted arrow in the figure represents the flow direction of condensed water entering the air duct 140 from the drain hole 210 when the water flow pressure in the drain hole 210 is large or the water volume is large. Specifically, after the condensed water flows into the air duct 140, it directly drips onto the outer wall of the first water retaining rib 151 and flows along the annular structure 1511; the water flowing to the end of the annular structure 1511 directly drips downward from the end of the annular structure 1511.

[0057] It is understandable that the inventors learned during the test that if the height of the first water retaining rib 151 protruding from the end surface of the end of the mounting portion 150 away from the inner wall 141 is too low, the water retaining performance of the first water retaining rib 151 cannot meet the protection requirements for the motor 300. Figure 5 As shown, in a preferred embodiment of the utility model, along the axial direction of the volute 100, the height of the end surface of the first water retaining rib 151 protruding from the end of the mounting portion 150 away from the inner wall 141 is greater than or equal to 5mm (millimeter). It can be understood that the height of the first water retaining rib 151 protruding from the end surface of the end is l. In this embodiment, l≥5mm is satisfied. For example, the height l can be 5mm, 8mm, 10mm, etc., so that the first water retaining rib 151 has a higher water retaining performance, reducing the possibility of water splashing from all directions into the mounting groove 152 and then flowing out from the outlet 1521. The specific height of the first water retaining rib 151 can be selected according to the actual application requirements.

[0058] Reference Figure 6 As shown, in the embodiment of the utility model, the drain hole 210 and the mounting portion 150 are located on the same side wall in the air duct 140. Specifically, the drain hole 210 is provided on the inner wall 141 of the first housing 110. Similarly, the mounting portion 150 is connected to the inner wall 141 of the first housing 110. It can be understood that the drain hole 210 and the mounting portion 150 are located on the same side wall in the air duct 140 so that the water flowing out of the drain hole 210 can directly drip onto the outer peripheral wall of the mounting portion 150. The water can move along the circumference of the mounting portion 150 and drip onto the bottom of the air duct 140, simplifying the drainage path of the condensed water and shortening the length of the drainage path of the condensed water. In addition, the possibility of water directly dripping onto the inner wall 141 of the air duct 140 and splashing onto the opening of the mounting portion 150 can also be reduced.

[0059] It can be understood that when the amount of water in the water collecting tray 200 is large, the water flow rate and water pressure of the drain hole 210 will increase. In order to prevent the condensed water from being ejected from the drain hole 210 at a large flow rate, in the embodiment of the utility model, an expansion section is provided at one end of the drain hole 210 connected to the air duct 140, and the aperture of the expansion section gradually increases in the direction toward the air duct 140, or, referring to Figure 6 and Figure 7As shown, the side wall of the expansion section is provided with a second notch 211, and the second notch 211 is arranged to be inclined downward. It can be understood that the drainage hole 210 and the expansion section form a drainage channel, and the expansion section, as the outlet section of the drainage channel, gradually increases its inner diameter to relieve pressure, thereby reducing the pressure of water when passing through the expansion section, thereby reducing the flow rate of the water flow, reducing the distance of the water splashing when the water flow is discharged from the drainage hole 210, and further reducing the risk of water entering the outlet.

[0060] Specifically, in one embodiment, the aperture of the expansion section gradually increases in the direction toward the air duct 140, that is, the shape of the expansion section is trumpet-shaped. The trumpet-shaped expansion section can increase the inner diameter of the drainage channel linearly, thereby reducing the water pressure in the drainage channel. In one embodiment, the aperture of the expansion section increases in a step-by-step manner in the direction toward the air duct 140, that is, the expansion section includes multiple layers of steps, and the arrangement of the multiple layers of steps can increase the inner diameter of the drainage channel step by step, thereby reducing the water pressure in the drainage channel.

[0061] Reference Figure 6 and Figure 7 As shown, in another embodiment, the second notch 211 is tilted downward, which can not only increase the inner diameter of the drainage channel and reduce the water flow pressure, but also play a role in gathering the water flow, so that the water discharged from the drainage channel can flow downward along the second notch 211 instead of splashing in all directions.

[0062] In order to prevent the water with a large flow rate in the air duct 140 from gushing out from the outlet 1521 and splashing in all directions, in the embodiment of the utility model, the outer wall of the volute 100 may be provided with at least one rib 160, and the at least one rib 160 may be distributed below the outlet 1521 and configured to separate the water flowing out along the outlet 1521. In one example, referring to Figure 1 and Figure 8 As shown, there is one rib 160, which is arranged at the lower side of the central axis of the outlet 1521, thereby dividing the lower part of the outlet 1521 into two areas. It can be understood that the periphery of the mounting portion 150 can have a certain thickness, based on which, a groove can be formed at one end of the mounting portion 150 away from the air duct 140, and the rib 160 is arranged at the lower end of the groove and protrudes upward. In another example, there are two or more ribs 160, and the two or more ribs 160 can be arranged at intervals along the length direction of the volute 100, thereby separating the lower area of ​​the outlet 1521. When water with a large flow rate flows out of the outlet 1521, the rib 160 can divert the water flow, thereby reducing the water flow pressure, thereby reducing the water flow velocity, and reducing the risk of the water flow discharged from the outlet 1521 spraying to other electrical devices in the mobile air conditioner 2000.

[0063] Reference Figure 1 , Figure 2 and Figure 8 As shown, in the embodiment of the utility model, the outer wall of the volute 100 may be provided with a second water retaining rib 170, which is located below the outlet 1521 and protrudes from the outlet 1521 along the axial direction of the volute 100. Specifically, the second water retaining rib 170 is provided on the outer side of the groove formed at one end of the mounting portion 150 away from the air duct 140, and the second water retaining rib 170 may be extended along the circumference of the groove. It should be noted that, referring to Fig.11 As shown, in this embodiment, the volute 100 can be arranged on the upper side of the electrical control box 700. Based on this, the second water retaining rib 170 protrudes from the volute 100 from the outer wall of the first shell 110 in the direction away from the air duct 140, thereby achieving water blocking and reducing the risk of water flowing out of the outlet 1521 directly dripping downward to the electrical control box 700.

[0064] Reference Fig.11 As shown, the embodiment of the utility model further proposes a mobile air conditioner 2000, comprising the volute drainage structure 1000 of the above embodiment, and the volute drainage structure 1000 is arranged at the upper part of the mobile air conditioner 2000. In order to realize the top air outlet of the mobile air conditioner 2000, in the embodiment of the utility model, the volute drainage structure 1000 is arranged at the upper part of the mobile air conditioner 2000, wherein the air outlet 130 of the volute 100 is arranged upward, and it can be understood that the air outlet 130 can be connected with the air supply port of the mobile air conditioner 2000.

[0065] The mobile air conditioner 2000 adopts the volute drainage structure 1000 of the above embodiment. The mobile air conditioner 2000 is provided with a water collecting pan 200 connected to the volute 100. The water collecting pan 200 is arranged at a position adjacent to the air outlet 130, so that it can collect condensed water generated near the air outlet 130; the water collecting pan 200 is provided with a drainage hole 210 connected to the air duct 140, so that the condensed water in the water collecting pan 200 can flow into the air duct 140 through the drainage hole 210, and there is no need to drain the condensed water from the outer surface of the volute 100, thereby reducing the condensed water flowing along the volute 100. The possibility of damage to the electronic control components due to water diversion from external wires is reduced, thereby reducing the risk of electrical failure in the mobile air conditioner 2000; the inner wall 141 of the air duct 140 is provided with a mounting portion 150 for mounting the motor 300, and the peripheral edge of the mounting portion 150 protrudes from the inner wall 141. The peripheral edge of the mounting portion 150 can guide the condensed water discharged from the drain hole 210 along the circumference of the mounting portion 150 to the bottom of the mounting portion 150, which not only realizes the drainage of condensed water from the inside of the volute 100, but also reduces the risk of condensed water contacting the motor 300, thereby improving the reliability of the mobile air conditioner.

[0066] Since the mobile air conditioner 2000 adopts all the technical solutions of the volute drainage structure 1000 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0067] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A volute drainage structure, It is characterized in that include: A volute, provided with an air outlet and an air duct connected to the air outlet, wherein the air outlet is arranged upward; A water collecting tray connected to the volute and arranged side by side with the air outlet, the water collecting tray being provided with a drainage hole communicating with the air duct; Among them, the inner wall of the air duct is provided with a mounting portion for mounting the motor, the mounting portion is located below the drainage hole, the periphery of the mounting portion protrudes from the inner wall, and is configured to guide water discharged from the drainage hole along the circumference of the mounting portion to below the mounting portion.

2. The volute drainage structure according to claim 1, It is characterized in that A first water retaining rib is disposed at an end of the mounting portion away from the inner wall, and the first water retaining rib is configured to guide water to the bottom of the mounting portion along the circumference of the mounting portion.

3. The volute drainage structure according to claim 2, It is characterized in that The first water retaining rib forms an annular structure along the circumference of the mounting portion.

4. The volute drainage structure according to claim 3, It is characterized in that The mounting portion is provided with a mounting groove for accommodating the motor, and a wire outlet is provided on the bottom wall of the mounting groove along the up-down direction of the volute, and the annular structure is provided with a first notch, which is located at the lower side of the annular structure.

5. The volute drainage structure according to any one of claims 2 to 4, It is characterized in that Along the axial direction of the volute, the height of the first water retaining rib protruding from the end surface of the end portion is greater than or equal to 5 mm.

6. The volute drainage structure according to claim 1, It is characterized in that The drainage hole and the mounting portion are located on the same side wall in the air duct.

7. The volute drainage structure according to claim 6, It is characterized in that An end of the drainage hole communicating with the air duct is provided with an expansion section, and the aperture of the expansion section increases gradually or stepwise in a direction toward the air duct; or, The side wall of the expansion section is provided with a second notch, and the second notch is inclined downward.

8. The volute drainage structure according to claim 1, It is characterized in that The mounting portion is provided with a mounting groove for accommodating the motor, and a wire outlet is provided on the bottom wall of the mounting groove along the up and down direction of the volute, and at least one rib is provided on the outer side wall of the volute, and at least one rib is distributed below the wire outlet and is configured to separate the water flow flowing out along the wire outlet.

9. The volute drainage structure according to claim 1, It is characterized in that The mounting portion is provided with a mounting groove for accommodating the motor, and a wire outlet is provided on the bottom wall of the mounting groove along the up and down direction of the volute, and a second water retaining rib is provided on the outer side wall of the volute, and the second water retaining rib is located below the wire outlet and protrudes from the volute in a direction away from the air duct.

10. Mobile air conditioner, It is characterized in that It comprises the volute drainage structure according to any one of claims 1 to 9, wherein the volute drainage structure is arranged at the upper part of the mobile air conditioner.

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