Drainage auxiliary device, air conditioner outdoor unit and drainage control method

Abstract

The invention provides a drainage auxiliary device, an air conditioner outdoor unit and a drainage control method, relates to the technical field of air conditioners, and aims at solving the problem that a chassis of an existing air conditioner outdoor unit is low in drainage speed. The drainage auxiliary device is used for draining condensate water of a chassis, a drainage hole is formed in the chassis, the drainage auxiliary device comprises a fixing frame and an impeller, the impeller is rotatably installed on the fixing frame, and the fixing frame is used for being fixedly connected with the chassis; in the mounting state of the fixing frame, the impeller is located below the drainage hole and used for forming negative pressure at the position of the drainage hole. Active drainage of the chassis can be achieved, and the drainage speed is high.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a drainage auxiliary device, an air conditioner outdoor unit and a drainage control method. Background Art

[0002] When the air conditioner is running in heating mode, the heat exchanger of the air conditioner will be in a heat absorption state, and its temperature is lower than the outside temperature, causing condensation on the surface of the heat exchanger. As the air conditioner runs longer, the condensation on the surface of the heat exchanger will gradually increase and drip onto the chassis and accumulate. In order to prevent the condensation from damaging the machine, it is necessary to drain the condensation.

[0003] The existing method of draining the condensed water from the chassis is usually to set a water channel with a certain inclination angle on the chassis, and use the characteristic of water flowing to lower places to drain the condensed water. However, this drainage method has a slow drainage speed, especially in cold areas, where the drainage speed is lower than the freezing speed, and the water channel is easily blocked, causing the ice layer to gradually thicken. During the rotation of the fan blades, they will hit the ice layer and cause the fan blades to be damaged, thus causing after-sales complaints. Summary of the invention

[0004] The first object of the present invention is to provide a drainage auxiliary device to solve the technical problem of slow drainage speed of the chassis of the existing air conditioner outdoor unit.

[0005] The drainage auxiliary device provided by the present invention is used to discharge condensed water from a chassis, wherein the chassis is provided with a drainage hole, and the drainage auxiliary device comprises a fixing frame and an impeller, wherein the impeller is rotatably mounted on the fixing frame, wherein the fixing frame is used to be fixedly connected to the chassis; when the fixing frame is in the installed state, the impeller is located below the drainage hole, and is used to form a negative pressure at the position of the drainage hole.

[0006] By setting up a drainage auxiliary device mainly composed of a fixing frame and an impeller, when it is necessary to speed up the drainage speed of the chassis, the drainage auxiliary device can be installed on the chassis by utilizing the fixed connection between the fixing frame and the chassis. At this time, the impeller is located below the drainage hole, and the rotation of the impeller is utilized to form a negative pressure at the location of the drainage hole, thereby realizing active suction of the condensed water in the chassis, so that the condensed water in the chassis can be quickly discharged through the drainage hole.

[0007] The drainage auxiliary device uses the rotation of the impeller to realize the active drainage operation of the chassis. This active drainage method can discharge the condensed water when it is initially formed, reducing the residence time of the condensed water in the chassis. Compared with the previous passive drainage method, the drainage auxiliary device can effectively prevent the condensed water from accumulating in the chassis and reduce the damage caused by the condensed water to the machine. Especially in cold areas, this setting can quickly drain the condensed water from the chassis, making the drainage speed faster than the freezing speed, avoiding the condensed water freezing and causing the waterway to be blocked, thereby preventing after-sales complaints caused by the fan blades hitting the ice layer.

[0008] Furthermore, the fixing frame is provided with a magnetic attraction portion, and the fixing frame is magnetically adsorbed and connected to the chassis via the magnetic attraction portion. This arrangement can utilize the magnetic attraction portion of the fixing frame to be connected to the chassis, and directly adsorb the drainage auxiliary device to the chassis, without the need for screws or other connecting parts for fixing, thereby improving installation convenience.

[0009] Furthermore, the fixing frame includes a support arm and a mounting arm fixedly connected to the support arm, the mounting arm is used to be fixedly connected to the chassis, and the impeller is mounted on the support arm. This setting form of the fixing frame is not only simple in structure, but also does not block the condensed water from being discharged from the drainage hole, thereby ensuring the timeliness and reliability of drainage.

[0010] Furthermore, the two ends of the support arm along the length direction are fixedly connected to the mounting arm. This arrangement, on the one hand, ensures the stability of the support arm and reduces the shaking of the impeller, and on the other hand, can also reduce the load of each mounting arm and prevent the connection between the mounting arm and the support arm from breaking.

[0011] Furthermore, the length of the support arm is adjustable. By setting the support arm to be adjustable in length, before installing the drainage auxiliary device, the length of the support arm can be adjusted according to the size of the drainage hole opened in the chassis to change the radial position of the installation arm along the drainage hole, thereby achieving the purpose of adapting to different drainage hole diameters.

[0012] Furthermore, the drainage auxiliary device further includes a power supply module, which is mounted on the fixing frame and electrically connected to the driving part of the impeller. The provision of the power supply module eliminates the need for additional power supply to the drainage auxiliary device, thereby improving the integration of the drainage auxiliary device and avoiding the entanglement of the power supply cable during the wiring process.

[0013] Furthermore, the drainage auxiliary device further includes a communication module, which is in communication connection with the driving part of the impeller; the communication module is mounted on the fixing frame, and the communication module is also in communication connection with the main controller of the air conditioner outdoor unit. This arrangement enables the user to control the rotation or stop of the impeller using the main controller, which is convenient for operation.

[0014] The second object of the present invention is to provide an air conditioner outdoor unit to solve the technical problem of slow drainage speed of the chassis of the existing air conditioner outdoor unit.

[0015] The air conditioner outdoor unit provided by the present invention comprises a chassis and the above-mentioned drainage auxiliary device, wherein the chassis is provided with a plurality of drainage holes, and the drainage auxiliary device is installed at the position of at least one of the drainage holes.

[0016] By arranging the drainage auxiliary device in the air conditioner outdoor unit, the air conditioner outdoor unit accordingly has all the advantages of the drainage auxiliary device, which will not be described one by one here.

[0017] In addition, when the above-mentioned drainage auxiliary device is provided at the position of each drainage hole of the chassis, active drainage operation at multiple positions of the chassis can be realized, further accelerating the drainage speed.

[0018] Furthermore, the plurality of drainage holes include a main drainage hole and at least one edge drainage hole, the main drainage hole is opposite to the evaporator of the air conditioner outdoor unit, and the aperture of the main drainage hole is larger than the aperture of the edge drainage hole; the drainage auxiliary device is installed at the positions of the main drainage hole and the edge drainage hole. Through this arrangement, the condensed water generated by the evaporator can be discharged in time, shortening the residence time of the condensed water in the chassis.

[0019] Furthermore, the impeller of the drainage auxiliary device is directly opposite to the drainage hole where the drainage auxiliary device is installed. This arrangement ensures the effective overlap area between the impeller and the corresponding drainage hole, thereby ensuring that during the rotation of the impeller, a reliable negative pressure can be generated at the position of the corresponding drainage hole, further accelerating the drainage speed of the chassis.

[0020] The third object of the present invention is to provide a drainage control method to solve the technical problem of slow drainage speed of the chassis of the existing air conditioner outdoor unit.

[0021] The drainage control method provided by the present invention comprises:

[0022] Get the operating mode of the air conditioner;

[0023] If the air conditioner is in heating mode, obtaining the outdoor ambient temperature;

[0024] If the outdoor environment temperature is higher than a first preset temperature, the drainage auxiliary device is controlled to enter a drainage auxiliary mode.

[0025] This drainage control method can actively drain the condensed water on the chassis when the air conditioner is running in heating mode. Compared with the previous passive drainage method, it can effectively prevent the condensed water from gathering and freezing on the chassis, thereby avoiding the gradual thickening of the ice layer due to blockage of the water channel, and preventing after-sales complaints caused by the rotation of the fan blades hitting the ice layer.

[0026] Furthermore, the drainage assistance mode includes:

[0027] The impellers of the drainage auxiliary devices at the main drainage holes and the edge drainage holes are controlled to run alternately according to continuous operation for a first preset time and stop for a second preset time. The speed of the impeller when it runs continuously for the first preset time is the first preset speed.

[0028] This setting can not only ensure the drainage speed of the chassis and prevent condensed water from accumulating in the chassis, but also reduce the power consumption at each impeller, thereby saving energy.

[0029] Furthermore, the drainage assistance mode also includes:

[0030] Get the compressor running time;

[0031] If the outdoor ambient temperature is greater than or equal to the second preset temperature and less than the first preset temperature, or the compressor operating time is greater than the third preset time and less than or equal to the fourth preset time, the impeller of the drainage auxiliary device at the edge drainage hole is controlled to operate alternately in a manner of continuously running at the second preset speed for the fifth preset time and stopping for the sixth preset time, and the second preset speed is greater than the first preset speed; the impeller of the drainage auxiliary device at the main drainage hole is controlled to continuously operate at the third preset speed, and the third preset speed is greater than the second preset speed.

[0032] This arrangement can improve the drainage efficiency of condensed water in the main drainage holes and the edge drainage holes.

[0033] Further, the second preset speed is 1.2-1.5 times of the first preset speed, the third preset speed is 1.3-1.4 times of the first preset speed, and the third preset speed is 1.1-1.2 times of the second preset speed.

[0034] By limiting the second preset speed within the above range, on the one hand, it is possible to avoid the situation where the drainage efficiency of the edge drainage hole is low due to the second preset speed being too low, so that condensed water cannot be discharged from the edge drainage hole in time. On the other hand, it is also possible to avoid the situation where the power consumption is high due to the impeller speed at the edge drainage hole being too fast.

[0035] By limiting the third preset rotation speed within the above range, the impeller rotation speed at the main drainage hole can be greater than the impeller rotation speed at the edge drainage hole, so as to improve the drainage efficiency of the condensed water from the main drainage hole.

[0036] Furthermore, the drainage auxiliary mode also includes:

[0037] Get the compressor running time;

[0038] If the outdoor ambient temperature is lower than the second preset temperature, or the compressor operating time is greater than the fourth preset time, or the air conditioner is in the defrost mode, the impeller of the drainage auxiliary device at the edge drain hole is controlled to continuously operate at the fourth preset speed, and the impeller of the drainage auxiliary device at the main drain hole is controlled to continuously operate at the fifth preset speed, and the fifth preset speed is greater than the fourth preset speed, the fourth preset speed is greater than the first preset speed, and the second preset temperature is lower than the first preset temperature.

[0039] This arrangement can further improve the efficiency of draining condensed water from the main drain holes and the edge drain holes, so that even in colder areas, there will not be excessive condensed water on the chassis and a thick layer of ice.

[0040] Further, the fourth preset speed is 1.5-2 times of the first preset speed, the fifth preset speed is 2-2.2 times of the first preset speed, and the fifth preset speed is 1.1-1.2 times of the fourth preset speed.

[0041] By limiting the fourth preset speed within the above range, the drainage efficiency of condensed water at the edge drain hole can be guaranteed. At the same time, by setting the speed of the impeller of the main drain hole to be greater than the speed of the impeller of the edge drain hole, the drainage efficiency of the main drain hole can also be accelerated, so that the condensed water dripping from the evaporator can be discharged from the main drain hole in time, shortening the residence time of the condensed water on the chassis and reducing the risk of chassis freezing in cold areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0043] Figure 1 A schematic structural diagram of a chassis of an air conditioner outdoor unit provided by an embodiment of the present invention;

[0044] Figure 2 for Figure 1A magnified view of the local structure at point A in the middle;

[0045] Figure 3 A schematic flow chart of a drainage control method provided by an embodiment of the present invention;

[0046] Figure 4 A schematic flow chart of another drainage control method provided in an embodiment of the present invention.

[0047] Description of reference numerals:

[0048] 010- chassis; 020- drainage hole; 021- main drainage hole; 022- edge drainage hole; 030- drainage auxiliary device;

[0049] 100-fixed frame; 200-impeller; 300-power supply module; 400-communication module;

[0050] 110 - support arm; 120 - mounting arm. DETAILED DESCRIPTION

[0051] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0052] Figure 1 This is a schematic diagram of the structure of the chassis 010 of the air conditioner outdoor unit provided in this embodiment. Figure 2 for Figure 1 A magnified view of the local structure at point A. Figure 1 and Figure 2 As shown, this embodiment provides a drainage auxiliary device 030 for draining condensed water from the bottom plate 010. Specifically, the bottom plate 010 is provided with a drainage hole 020, and the drainage auxiliary device 030 includes a fixing frame 100 and an impeller 200, wherein the impeller 200 is rotatably mounted on the fixing frame 100, wherein the fixing frame 100 is used for being fixedly connected with the bottom plate 010; when the fixing frame 100 is installed, the impeller 200 is located below the drainage hole 020, and is used for forming a negative pressure at the location of the drainage hole 020.

[0053] By setting up a drainage auxiliary device 030 mainly composed of a fixing frame 100 and an impeller 200, when it is necessary to speed up the drainage speed of the chassis 010, the drainage auxiliary device 030 can be installed on the chassis 010 by utilizing the fixed connection between the fixing frame 100 and the chassis 010. At this time, the impeller 200 is located below the drainage hole 020. By utilizing the rotation of the impeller 200, a negative pressure is formed at the position of the drainage hole 020, thereby realizing active suction of the condensed water in the chassis 010, so that the condensed water in the chassis 010 can be quickly discharged through the drainage hole 020.

[0054] The drainage auxiliary device 030 utilizes the rotation of the impeller 200 to realize the active drainage operation of the chassis 010. This active drainage method can discharge the condensed water when it is initially formed, reducing the residence time of the condensed water in the chassis 010. Compared with the previous passive drainage method, the drainage auxiliary device 030 can effectively prevent the condensed water from accumulating in the chassis 010, reducing the damage caused by the condensed water to the machine. Especially in cold areas, this setting can quickly discharge the condensed water in the chassis 010, so that the drainage speed is greater than the freezing speed, avoiding the condensed water freezing and causing the waterway to be blocked, thereby preventing after-sales complaints caused by the fan blades hitting the ice layer.

[0055] In this embodiment, the fixing frame 100 is provided with a magnetic attraction portion, wherein the fixing frame 100 is magnetically adsorbed and connected to the chassis 010 via the magnetic attraction portion.

[0056] When the drainage auxiliary device 030 needs to be installed on the chassis 010, the magnetic attraction portion of the fixing frame 100 can be connected to the chassis 010 by magnetic attraction, and the drainage auxiliary device 030 can be directly adsorbed on the chassis 010 without the need for screws or other connecting parts to fix it, thereby improving the convenience of installation.

[0057] Moreover, the form of installing the drainage auxiliary device 030 on the chassis 010 by magnetic adsorption also allows users to selectively install the drainage auxiliary device 030 according to the ambient temperature. For example, for users in cold areas, the drainage auxiliary device 030 can be selected as an after-sales component.

[0058] Please continue to refer to Figure 2 In this embodiment, the fixing frame 100 may include a supporting arm 110 and a mounting arm 120 fixedly connected to the supporting arm 110 , wherein the mounting arm 120 is used to be fixedly connected to the chassis 010 , and the impeller 200 is mounted on the supporting arm 110 .

[0059] This arrangement of the fixing frame 100 is not only simple in structure, but also does not block the condensed water from draining out of the drain hole 020, thus ensuring the timeliness and reliability of drainage. In addition, this arrangement can also reduce the weight of the fixing frame 100, thereby achieving the purpose of reducing the weight of the drainage auxiliary device 030.

[0060] In this embodiment, the mounting arm 120 is made of a magnetic material. This arrangement can increase the magnetic adsorption force of the mounting arm 120, improve the installation reliability of the drainage auxiliary device 030, and reduce the risk of the drainage auxiliary device 030 falling off.

[0061] In other embodiments, the outer surface of the mounting arm 120 may be coated with a magnetic material. This arrangement can also achieve the purpose of magnetically adsorbing the mounting arm 120 to be connected to the chassis 010 .

[0062] Please continue to refer to Figure 2 In this embodiment, both ends of the support arm 110 along the length direction are fixedly connected to the mounting arms 120.

[0063] By providing mounting arms 120 at both ends of the support arm 110, after the drainage auxiliary device 030 is installed on the chassis 010, both ends of the support arm 110 are supported by the mounting arms 120. On the one hand, the stability of the support arm 110 is ensured, and the shaking of the impeller 200 is reduced. On the other hand, the load of each mounting arm 120 can be reduced to prevent the connection between the mounting arm 120 and the support arm 110 from breaking. In addition, the fixing frame 100 can be magnetically adsorbed and connected to the chassis 010 at multiple points, further improving the installation reliability of the drainage auxiliary device 030.

[0064] In this embodiment, the length of the support arm 110 is adjustable.

[0065] By setting the support arm 110 to be adjustable in length, before installing the drainage auxiliary device 030, the length of the support arm 110 can be adjusted according to the size of the drainage hole 020 opened in the chassis 010, so as to change the radial position of the installation arm 120 along the drainage hole 020, thereby achieving the purpose of adapting to different diameters of the drainage hole 020. This setting of the support arm 110 enables the drainage auxiliary device 030 to meet the drainage requirements of drainage holes 020 of various diameters, and has a high degree of commonality.

[0066] Specifically, the support arm 110 can be set in the form of a telescopic rod. In this case, the support arm 110 can include an outer sleeve and a movable rod sleeved inside the outer sleeve, wherein movable rods are provided at both ends of the outer sleeve, the impeller 200 is installed in the outer sleeve, and the two mounting arms 120 are respectively connected to the two movable rods. By adjusting the position of the movable rod along the length direction of the outer sleeve, the purpose of adjusting the length of the support arm 110 is achieved.

[0067] It should be noted that the structure of the support arm 110 can refer to the structure of an existing umbrella telescopic rod, which is well known to those skilled in the art. This embodiment does not make any improvements thereto, so it will not be described in detail.

[0068] Please continue to refer to Figure 2 In this embodiment, the drainage auxiliary device 030 may further include a power supply module 300 , wherein the power supply module 300 is installed on the fixing frame 100 , and the power supply module 300 is electrically connected to the driving part of the impeller 200 .

[0069] By providing the power supply module 300, electric energy can be provided to the driving part of the impeller 200, thereby ensuring the reliability of the rotation of the impeller 200. Moreover, the provision of the power supply module 300 makes it unnecessary to connect the drainage auxiliary device 030 to an additional power supply, thereby improving the integration of the drainage auxiliary device 030 and avoiding the entanglement of the power supply cable during the wiring process, thereby reducing the adverse effects of the power supply cable on the internal structure of the air conditioner outdoor unit.

[0070] In this embodiment, the driving part of the impeller 200 may be a rotary motor. Among them, how to use the power supply module 300 to power the rotary motor so as to use the rotary motor to drive the impeller 200 to rotate is something that those skilled in the art can obtain based on the prior art, and it is not the focus of improvement of this application, so it will not be described in detail.

[0071] Please continue to refer to Figure 2 In this embodiment, the drainage auxiliary device 030 may also include a communication module 400. Specifically, the communication module 400 is communicatively connected to the driving part of the impeller 200. The communication module 400 is installed on the fixing frame 100. The communication module 400 is also communicatively connected to the main controller of the air conditioner outdoor unit.

[0072] When the drainage auxiliary device 030 is installed on the chassis 010, the communication module 400 can be used to establish a communication connection between the drainage auxiliary device 030 and the main controller of the air conditioner outdoor unit, so that the user can use the main controller to control the impeller 200 to rotate or stop, which is convenient for operation. The user can control the main controller through the remote control of the air conditioner.

[0073] It should be noted that, in the present embodiment, how to establish a communication connection between the main controller of the air conditioner outdoor unit and the driving part of the impeller 200 so as to realize the rotation control of the impeller 200 by means of the main controller can be obtained by those skilled in the art based on the prior art. It is not the focus of improvement of the present application and will not be elaborated on here.

[0074] It should also be noted that, in this embodiment, the communication module 400 may also be powered by the power supply module 300 .

[0075] In this embodiment, the power supply module 300 and the communication module 400 are both installed on the support arm 110 of the fixing frame 100. This arrangement can ensure that the positions of the power supply module 300 and the communication module 400 are fixed during the operation of the drainage auxiliary device 030, thereby avoiding unstable power supply and communication failure caused by shaking of the power supply module 300 and the communication module 400.

[0076] Please continue to refer to Figure 1 and Figure 2In this embodiment, the power supply module 300 and the communication module 400 can be installed on the side of the support arm 110 away from the chassis 010. That is, when the air conditioner outdoor unit is in use, the power supply module 300 and the communication module 400 are located on the lower surface of the support arm 110. Through this arrangement, it is possible to prevent the condensed water dripping from the self-draining hole 020 from directly acting on the power supply module 300 and the communication module 400, which plays a certain protective role on the power supply module 300 and the communication module 400.

[0077] It should be noted that, in this embodiment, a waterproof housing may also be provided for the power supply module 300 and the communication module 400 .

[0078] In this embodiment, the communication module 400 includes a WIFI module. This arrangement of the communication module 400 can realize wireless communication between the main controller and the impeller 200 without laying communication cables, which not only saves the cumbersome process of wiring, but also avoids the situation where the impeller 200 cannot work normally due to the entanglement of the cable and the impeller 200.

[0079] In addition, this embodiment further provides an air conditioner outdoor unit, including a chassis 010 and the above-mentioned drainage auxiliary device 030, wherein the chassis 010 is provided with a plurality of drainage holes 020, and the above-mentioned drainage auxiliary device 030 is installed at the position of each drainage hole 020.

[0080] By providing the drainage auxiliary device 030 in the air conditioner outdoor unit, the air conditioner outdoor unit accordingly has all the advantages of the drainage auxiliary device 030, which will not be described one by one here.

[0081] In addition, by providing the above-mentioned drainage auxiliary device 030 at the position of each drainage hole 020 of the chassis 010, active drainage operation at multiple positions of the chassis 010 can also be achieved, further accelerating the drainage speed.

[0082] In this embodiment, the chassis 010 is provided with three drainage holes 020, which include a main drainage hole 021 and two edge drainage holes 022. Specifically, when the chassis 010 is installed in the casing of the air conditioner outer unit, the main drainage hole 021 is opposite to the evaporator; the two edge drainage holes 022 are arranged on both sides of the main drainage hole 021, and the aperture of the main drainage hole 021 is larger than the aperture of the edge drainage hole 022. Through this arrangement, the condensed water generated by the evaporator can be discharged in time, and the residence time of the condensed water in the chassis 010 can be shortened.

[0083] In this embodiment, the diameter of the main drainage hole 021 is between 25-35 mm, and the diameter of the edge drainage hole 022 is between 10-20 mm.

[0084] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the impeller 200 of the drainage auxiliary device 030 is directly opposite to the drainage hole 020 where the drainage auxiliary device 030 is installed. In other words, the impeller 200 of the drainage auxiliary device 030 installed in the main drainage hole 021 is directly opposite to the main drainage hole 021; the impeller 200 of the drainage auxiliary device 030 installed in the edge drainage hole 022 is directly opposite to the edge drainage hole 022.

[0085] It should be noted that the impeller 200 is directly opposite to the drain hole 020, which means that the center line of the impeller 200 coincides with the center line of the drain hole 020. This arrangement ensures the effective overlap area between the impeller 200 and the drain hole 020, thereby ensuring that a reliable negative pressure can be generated at the position of the drain hole 020 during the rotation of the impeller 200.

[0086] In other embodiments, the impeller 200 may also be arranged to be opposite to the corresponding drainage hole 020, that is, at the location of the drainage hole 020 where the drainage auxiliary device 030 is installed, the impeller is located at the edge of the drainage hole 020. This arrangement can also form a negative pressure at the location of the drainage hole 020, thereby realizing active drainage of the chassis 010.

[0087] Please continue to refer to Figure 1 In this embodiment, the drainage auxiliary device 030 is located below the chassis 010 , and the fixing frame 100 is connected to the lower surface of the chassis 010 .

[0088] This position setting form of the drainage auxiliary device 030, on the one hand, can reduce the damage to the drainage auxiliary device 030 caused by collisions during the installation of components above the chassis 010. On the other hand, it also realizes the hidden design of the connection between the fixing frame 100 and the chassis 010, so that when the condensed water is discharged from the drainage hole 020, it will not directly act on the connection between the fixing frame 100 and the chassis 010, thereby reducing the adverse effects of the condensed water flow and flushing on the above-mentioned connection part, ensuring the connection reliability between the fixing frame 100 and the chassis 010, and further ensuring the installation stability of the drainage auxiliary device 030.

[0089] Figure 3 Schematic flow chart of the drainage control method provided by the embodiment of the present invention. Figure 3 As shown, this embodiment also provides a drainage control method for controlling the drainage of the chassis 010 of the above-mentioned air conditioner outdoor unit, the method comprising:

[0090] S200: Acquire the operating mode of the air conditioner.

[0091] The operating modes of the air conditioner mainly include cooling mode and heating mode. When the indoor temperature is low, the air conditioner operates in heating mode; when the indoor temperature is high, the air conditioner operates in cooling mode.

[0092] S400: If the air conditioner is in the heating mode, the outdoor ambient temperature T is obtained.

[0093] When the air conditioner is running in heating mode, it indicates that the outdoor ambient temperature T is low, and the heat exchanger of the air conditioner outdoor unit is used as an evaporator. The condensed water generated on the surface of the evaporator will gradually drip onto the chassis 010 and continue to accumulate on the chassis 010.

[0094] S600: If the outdoor ambient temperature is higher than the first preset temperature, the drainage auxiliary device 030 is controlled to enter the drainage auxiliary mode.

[0095] In the heating mode of the air conditioner, when the outdoor ambient temperature is higher than the first preset temperature, the drainage auxiliary device 030 is controlled to enter the drainage auxiliary mode, and the chassis 010 can be actively drained so that the condensed water in the chassis 010 can be quickly discharged through the drainage hole.

[0096] This drainage control method can actively drain the condensed water on the chassis 010 when the air conditioner is running in heating mode. Compared with the previous passive drainage method, it can effectively prevent the condensed water from gathering and freezing on the chassis 010, thereby avoiding the gradual thickening of the ice layer due to blockage of the water channel, and preventing after-sales complaints caused by the rotation of the fan blades hitting the ice layer.

[0097] Specifically, in this embodiment, the drainage assistance mode includes:

[0098] S620: Control the impeller 200 of the drainage auxiliary device 030 at the main drainage hole 021 and the edge drainage hole 022 to alternately operate according to the first preset time period and stop for the second preset time period, wherein the speed of the impeller 200 when it continuously operates for the first preset time period is the first preset speed.

[0099] When the outdoor ambient temperature is higher than the first preset temperature T1, it indicates that although the air conditioner is running in heating mode at this time, the outdoor ambient temperature is not too cold. At this time, the impellers 200 of the drainage auxiliary device 030 at the main drainage hole 021 and the edge drainage hole 022 can be operated alternately in a manner of continuously running for a first preset time and stopping for a second preset time. This setting can not only ensure the drainage speed of the chassis 010 and prevent condensed water from accumulating in the chassis 010, but also reduce the power consumption of each impeller 200, thereby saving energy.

[0100] The first preset time length may be 3-7 minutes, the second preset time length may be 3-7 minutes, the second preset time length may be equal to the first preset time length, or may be different from the first preset time length. The first preset rotation speed V0 may be 600-800 rpm.

[0101] It should be noted that, in the present embodiment, the drainage control method is only exemplified by taking the case where the number of the main drainage holes 021 is one and the number of the edge drainage holes 022 is two. It can be understood that the drainage control method is also applicable when the number of the main drainage holes 021 and the edge drainage holes 022 is other than that of the edge drainage holes 022.

[0102] Specifically, in this embodiment, the drainage assistance mode also includes:

[0103] S640: Obtaining the operating time of the compressor;

[0104] By obtaining the compressor running time, the compressor continuous working time can be obtained.

[0105] S660: If the outdoor ambient temperature is greater than or equal to the second preset temperature and less than the first preset temperature, or the compressor operating time is greater than the third preset time and less than or equal to the fourth preset time, the impeller 200 of the drainage auxiliary device 030 at the edge drainage hole 022 is controlled to operate alternately in a manner of continuously running at the second preset speed for the fifth preset time and stopping for the sixth preset time, and the second preset speed is greater than the first preset speed; the impeller 200 of the drainage auxiliary device 030 at the main drainage hole 021 is controlled to continuously run at the third preset speed, and the third preset speed is greater than the second preset speed.

[0106] When the outdoor ambient temperature T is greater than or equal to the second preset temperature T2 and less than the first preset temperature T1, that is, when T1>T≥T2, it indicates that the outdoor ambient temperature is reduced and the freezing speed of the condensed water is accelerated; when the compressor running time t is greater than the third preset time t1 and less than or equal to the fourth preset time t2, that is, when t2≥t>t1, it indicates that the continuous operation time of the compressor is extended, the condensed water generated on the surface of the evaporator increases, and the chassis 010 will accumulate more condensed water.

[0107] At this time, the stop time of the impeller 200 at the edge drain hole 022 can be shortened, that is, the continuous operation time of the impeller 200 at the edge drain hole 022 is made longer than the stop time, and the speed of the impeller 200 at the edge drain hole 022 is increased during continuous operation, so that it can continuously operate at the speed V1 for the fifth preset time, that is, while shortening the stop time of the impeller 200, the speed of the impeller 200 is increased to ensure the drainage efficiency of the condensed water at the edge drain hole 022. At the same time, the impeller 200 at the main drain hole 021 can be made to continuously operate at a speed V2 higher than V1, that is, while the impeller 200 at the main drain hole 021 is not stopped, its speed is increased, so that the condensed water dripping from the evaporator can be discharged from the main drain hole 021 in time, so as to improve the drainage efficiency at the main drain hole 021.

[0108] Among them, the third preset time length t1 can be 10-15 minutes, the fourth preset time length t2 can be 15-30 minutes, the fifth preset time length can be 3-7 minutes, and the sixth preset time length can be 30-90 seconds; 0℃≤T1≤10℃, -5℃≤T2≤0℃.

[0109] Specifically, in this embodiment, the second preset speed is 1.2-1.5 times the first preset speed, the third preset speed is 1.3-1.4 times the first preset speed, and the third preset speed is 1.1-1.2 times the second preset speed. That is, 1.2V0≤V1≤1.5V0, 1.3V0≤V2≤1.4V0, 1.1V1≤V2≤1.2V1.

[0110] By limiting the second preset speed within the above range, on the one hand, it is possible to avoid the situation where the drainage efficiency of the edge drainage hole 022 is low due to the second preset speed being too low, so that condensed water cannot be discharged from the edge drainage hole 022 in time. On the other hand, it is also possible to avoid the situation where the power consumption is high due to the speed of the impeller 200 at the edge drainage hole 022 being too fast.

[0111] By limiting the third preset rotation speed within the above range, the rotation speed of the impeller 200 at the main drainage hole 021 can be greater than the rotation speed of the impeller 200 at the edge drainage hole 022 to improve the drainage efficiency of the condensed water from the main drainage hole 021.

[0112] In this embodiment, the drainage auxiliary mode also includes:

[0113] S680: If the outdoor ambient temperature is lower than the second preset temperature, or the compressor operation time is greater than the fourth preset time, or the air conditioner is in the defrost mode, the impeller 200 of the drainage auxiliary device 030 at the edge drainage hole 022 is controlled to continuously operate at the fourth preset speed, and the impeller 200 of the drainage auxiliary device 030 at the main drainage hole 021 is controlled to continuously operate at the fifth preset speed, and the fifth preset speed is greater than the fourth preset speed, the fourth preset speed is greater than the first preset speed, and the second preset temperature is lower than the first preset temperature.

[0114] When the outdoor ambient temperature T is lower than the second preset temperature T2, that is, T<T2, it indicates that the outdoor ambient temperature is further reduced and the freezing speed of the condensed water is further accelerated; when the compressor operation time t is greater than the fourth preset time t2, that is, t>t2, it indicates that the continuous operation time of the compressor is further extended, the condensed water generated on the surface of the evaporator is further increased, and the chassis 010 will also accumulate more condensed water; when the air conditioner is in defrost mode, it indicates that the evaporator is frosted.

[0115] At this time, the impellers 200 at the main drain hole 021 and the edge drain hole 022 can be kept running continuously. At the same time, the rotation speed of the impellers 200 at the main drain hole 021 and the edge drain hole 022 is increased to ensure the drainage efficiency of the condensed water in the main drain hole 021 and the edge drain hole 022.

[0116] Specifically, in this embodiment, the fourth preset speed is 1.5-2 times the first preset speed, the fifth preset speed is 2-2.2 times the first preset speed, and the fifth preset speed is 1.1-1.2 times the fourth preset speed. That is, 1.5V0≤V3≤2V0, 2V0≤V4≤2.2V0, 1.1V3≤V4≤1.2V3.

[0117] By limiting the fourth preset rotation speed within the above range, the drainage efficiency of the condensed water at the edge drain hole 022 can be ensured. At the same time, by setting the rotation speed of the impeller 200 of the main drain hole 021 to be greater than the rotation speed of the impeller 200 of the edge drain hole 022, the drainage efficiency of the main drain hole 021 can be accelerated, so that the condensed water dripping from the evaporator can be discharged from the main drain hole 021 in time, shortening the residence time of the condensed water on the chassis 010 and reducing the risk of freezing of the chassis 010 in cold areas.

[0118] Figure 4 A schematic flow chart of another drainage control method provided by an embodiment of the present invention. Figure 4 As shown, this embodiment also provides another drainage control method, including:

[0119] S101: The air conditioner operates in heating mode, and the outdoor ambient temperature T is greater than T1;

[0120] S102: The impellers 200 of the main drainage hole 021 and the edge drainage hole 022 are both turned on and run at V0;

[0121] S103: The impellers 200 of the main drainage hole 021 and the edge drainage hole 022 are operated according to the rule of opening for 5 minutes and stopping for 5 minutes;

[0122] S104: Detecting the outdoor ambient temperature T or the compressor running time t;

[0123] S105: Determine whether the outdoor ambient temperature T and the compressor operation time t satisfy T1>T≥T2 or t2≥t>t1;

[0124] S106: If T1>T≥T2 or t2≥t>t1, the impeller 200 of the edge drain hole 022 runs at a speed of V1 and in a pattern of 5 minutes on and 1 minute off, and the impeller 200 of the main drain hole 021 runs continuously at a speed of V2;

[0125] S107: Determine whether the outdoor ambient temperature T and the compressor operation time t satisfy T<T2 or t>t2, or the air conditioner is in defrost mode;

[0126] S108: If T<T2 or t>t2, the impeller 200 of the edge drain hole 022 continuously operates at the rotation speed V3, and the impeller 200 of the main drain hole 021 continuously operates at the rotation speed V4.

[0127] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program is read and executed by a processor, the method provided in the above embodiment is implemented and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0128] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

[0129] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0130] In the above embodiments, the descriptions of directions such as "up" and "down" are all based on the perspective when the air conditioner outdoor unit is in use.

[0131] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drainage auxiliary device, characterized in that: The invention is used for discharging condensed water from a chassis (010), wherein the chassis (010) is provided with a drainage hole (020), and the drainage auxiliary device comprises a fixing frame (100) and an impeller (200), wherein the impeller (200) is rotatably mounted on the fixing frame (100), wherein the fixing frame (100) is used for being fixedly connected to the chassis (010); when the fixing frame (100) is in an installed state, the impeller (200) is located below the drainage hole (020), and is used for forming a negative pressure at the position of the drainage hole (020).

2. The drainage auxiliary device according to claim 1, characterized in that: The fixing frame (100) is provided with a magnetic attraction portion, and the fixing frame (100) is magnetically adsorbed and connected to the chassis (010) via the magnetic attraction portion.

3. The drainage auxiliary device according to claim 1, characterized in that: The fixing frame (100) comprises a supporting arm (110) and a mounting arm (120) fixedly connected to the supporting arm (110); the mounting arm (120) is used to be fixedly connected to the chassis (010); and the impeller (200) is mounted on the supporting arm (110).

4. The drainage auxiliary device according to claim 3, characterized in that: Both ends of the support arm (110) along the length direction are fixedly connected to the mounting arm (120); and / or the length of the support arm (110) is adjustable.

5. The drainage auxiliary device according to claim 1, characterized in that: The drainage auxiliary device further comprises a power supply module (300), the power supply module (300) being mounted on the fixing frame (100), the power supply module (300) being electrically connected to a driving portion of the impeller (200); and / or the drainage auxiliary device further comprises a communication module (400), the communication module (400) being communicatively connected to the driving portion of the impeller (200); the communication module (400) being mounted on the fixing frame (100), the communication module (400) being also communicatively connected to a main controller of an air conditioner outdoor unit.

6. An air conditioner outdoor unit, characterized in that: It comprises a chassis (010) and the drainage auxiliary device according to any one of claims 1 to 5, wherein the chassis (010) is provided with a plurality of drainage holes (020), and the drainage auxiliary device is installed at the position of at least one of the drainage holes (020).

7. The air conditioner outdoor unit according to claim 6, characterized in that: The plurality of drainage holes (020) include a main drainage hole (021) and at least one edge drainage hole (022); the main drainage hole (021) is opposite to the evaporator of the air conditioner outdoor unit; the aperture of the main drainage hole (021) is larger than the aperture of the edge drainage hole (022); the drainage auxiliary device is installed at the positions of the main drainage hole (021) and the edge drainage hole (022).

8. The air conditioner outdoor unit according to claim 6, characterized in that: The impeller (200) of the drainage auxiliary device is directly opposite to the drainage hole (020) where the drainage auxiliary device is installed.

9. A drainage control method, characterized in that: Used to control drainage of the chassis (010) of the air conditioner outdoor unit according to claim 7, the method comprising: Get the operating mode of the air conditioner; If the air conditioner is in heating mode, obtaining the outdoor ambient temperature; If the outdoor environment temperature is higher than a first preset temperature, the drainage auxiliary device is controlled to enter a drainage auxiliary mode.

10. The drainage control method according to claim 9, characterized in that: The drainage assistance mode includes: The impeller (200) of the drainage auxiliary device at the main drainage hole (021) and the edge drainage hole (022) is controlled to alternately operate according to a first preset time period of continuous operation and a second preset time period of stoppage, and the rotation speed of the impeller (200) when it continuously operates for the first preset time period is a first preset rotation speed.

11. The drainage control method according to claim 10, characterized in that: The drainage assistance mode also includes: Get the compressor running time; If the outdoor ambient temperature is greater than or equal to the second preset temperature and less than the first preset temperature, or the compressor operation time is greater than the third preset time and less than or equal to the fourth preset time, the impeller (200) of the drainage auxiliary device at the edge drainage hole (022) is controlled to operate alternately in a manner of continuously running at the second preset speed for the fifth preset time and stopping for the sixth preset time, and the second preset speed is greater than the first preset speed; the impeller (200) of the drainage auxiliary device at the main drainage hole (021) is controlled to continuously operate at the third preset speed, and the third preset speed is greater than the second preset speed.

12. The drainage control method according to claim 11, characterized in that: The second preset speed is 1.2-1.5 times the first preset speed, the third preset speed is 1.3-1.4 times the first preset speed, and the third preset speed is 1.1-1.2 times the second preset speed.

13. The drainage control method according to claim 10, characterized in that: The drainage assistance mode also includes: Get the compressor running time; If the outdoor ambient temperature is lower than the second preset temperature, or the compressor operation time is longer than the fourth preset time, or the air conditioner is in the defrost mode, the impeller (200) of the drainage auxiliary device at the edge drainage hole (022) is controlled to continuously operate at the fourth preset speed, and the impeller (200) of the drainage auxiliary device at the main drainage hole (021) is controlled to continuously operate at the fifth preset speed, and the fifth preset speed is greater than the fourth preset speed, the fourth preset speed is greater than the first preset speed, and the second preset temperature is less than the first preset temperature.

14. The drainage control method according to claim 13, characterized in that: The fourth preset speed is 1.5-2 times of the first preset speed, the fifth preset speed is 2-2.2 times of the first preset speed, and the fifth preset speed is 1.1-1.2 times of the fourth preset speed.

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