A method for preventing clogging of water discharge of a window-type air conditioner

Abstract

The application discloses a kind of window type air conditioner's drainage anti-blocking control method, including indoor unit, outdoor unit and saddle bridge, indoor unit is equipped with the water receiving tray for receiving condensate, outdoor unit is equipped with drainage pump, the water inlet of drainage pump is connected between water receiving tray and water inlet pipe, the water outlet of drainage pump is connected with water outlet pipe, drainage pump is used to drain the condensate in water receiving tray to the bottom plate of outdoor unit, filter part is arranged between water inlet pipe and the water inlet of drainage pump, for filtering the condensate flowing into drainage pump, to prevent drainage pump from being blocked, drainage pump reverses to extract the condensate in bottom plate to reverse flush filter part, to avoid filter part from being blocked and affect normal drainage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to a drainage anti-blocking control method of a window air conditioner. BACKGROUND

[0002] The saddle type window air conditioner comprises an indoor unit, an outdoor unit and a saddle bridge, the saddle bridge connects the indoor unit and the outdoor unit together, the window air conditioner has an n-shaped structure as a whole, the indoor unit and the outdoor unit are separated through the saddle bridge to separate the indoor unit and the outdoor unit, thereby effectively reducing indoor noise, the saddle bridge is arranged at a window, and the window air conditioner is installed at the window. The indoor unit is provided with an indoor heat exchanger, an indoor fan, a water receiving tray and the like, and the water receiving tray is used for receiving condensate water dropped from the indoor heat exchanger. The outdoor unit is provided with an outdoor heat exchanger, an outdoor fan, a rear partition plate and the like.

[0003] Based on the n-shaped structure of the saddle type window air conditioner, the condensate water in the water receiving tray on the indoor side cannot automatically flow to the outdoor side, and the condensate water in the indoor water receiving tray needs to be introduced to the outdoor side through a drainage pump. The condensate water in the indoor water receiving tray contains impurities, and after the window air conditioner is used for a long time, the impurities in the indoor water receiving tray will block the drainage pipeline and the drainage pump, thereby affecting the normal drainage of the indoor condensate water, and even causing the indoor water receiving tray to overflow.

[0004] The above information disclosed in the background of the application is only used to increase the understanding of the background of the application, and therefore, it can include prior art known by those skilled in the art. SUMMARY

[0005] In view of the problems in the background, the present application provides a drainage anti-blocking control method of a window air conditioner, which solves the problem that impurities in condensate water block the drainage pump and the drainage pipeline, thereby affecting the indoor drainage and even causing overflow.

[0006] To achieve the above-mentioned application purposes, the present application adopts the following technical solutions:

[0007] The present application provides a drainage anti-blocking control method of a window air conditioner, which comprises an indoor unit, an outdoor unit and a saddle bridge, the indoor unit is provided with a water receiving tray for receiving condensate water, the outdoor unit is provided with a drainage pump, a water inlet pipe is arranged between the water receiving tray and the water inlet of the drainage pump, a water outlet pipe is arranged at the water outlet of the drainage pump, the drainage pump is used for draining the condensate water in the water receiving tray to the bottom plate of the outdoor unit, a filter part is arranged between the water inlet pipe and the water inlet of the drainage pump, and is used for filtering the condensate water flowing into the drainage pump, thereby preventing the drainage pump from being blocked, and the drainage pump is reversed to suck the condensate water in the bottom plate to reversely flush the filter part, thereby avoiding that the filter part is blocked and affecting the normal drainage.

[0008] By arranging the filter part at the position where the water inlet pipe is communicated with the water inlet of the drainage pump, the filter part is used to filter the condensate water flowing into the drainage pump, so as to avoid that the impurities block the drainage pump.

[0009] If the filter part is not replaced or cleaned in time after long-term use, a large amount of impurities are accumulated on the water inlet side of the filter part, which affects the normal water flow of the drainage passage, increases the drainage resistance, prolongs the drainage time, and even causes the drainage to fail to be normally performed. In order to solve this problem, the drainage pump is reversed to extract the condensate water in the bottom plate, and the clean condensate water in the bottom plate is used to reversely flush the filter part, so that the impurities accumulated on the water inlet side of the filter part are flushed away, the effect of reverse flushing of the filter part is achieved, and the reliability of the condensate water drainage is improved, so that the drainage passage is prevented from being blocked or the indoor water overflow phenomenon is avoided.

[0010] In some embodiments of the present application, the drainage pump determines whether to reverse according to the actual single pumping time.

[0011] In some embodiments of the present application, the drainage pump has a first set time length for single pumping, and when the actual single pumping time of the drainage pump is greater than the first set time length, the air conditioner stops the refrigeration operation, and the air conditioner gives a prompt to replace the filter part.

[0012] In some embodiments of the present application, the filter part includes a sleeve, a filter plate is arranged in the sleeve, one end of the sleeve is detachably connected with the water outlet end of the water inlet pipe, and the other end of the sleeve is detachably connected with the water inlet of the drainage pump, and the filter plate is used to filter the condensate water flowing through the sleeve. When the filter part is replaced, only the filter plate is replaced.

[0013] In some embodiments of the present application, the drainage pump has a second set time length for single pumping, and the second set time length is less than the first set time length.

[0014] When the actual single pumping time of the drainage pump is between the first set time length and the second set time length, the drainage pump is reversed to reversely flush the filter part.

[0015] In some embodiments of the present application, when the actual single pumping time of the drainage pump is less than the second set time length, the air conditioner is normally operated.

[0016] In some embodiments of the present application, the reverse time length of the drainage pump is in a proportional relationship with the actual single pumping time of the drainage pump.

[0017] In some embodiments of the present application, a water storage tank is arranged in the bottom plate, and a filter element is arranged at the water inlet of the water storage tank.

[0018] The water outlet pipe includes a first water outlet pipe and a second water outlet pipe.

[0019] The first water outlet pipe is used to introduce the drainage water into the bottom tray, and the condensed water on the bottom tray flows into the water storage tank after being filtered by the filter, and the first control valve is arranged on the first water outlet pipe;

[0020] The second water outlet pipe extends into the water storage tank, and the drainage pump draws the clean condensed water in the water storage tank to reversely flush the filter part when the drainage pump reverses, and the second control valve is arranged on the second water outlet pipe;

[0021] When the drainage pump is in the state of discharging water, the first control valve is opened, and the second control valve is closed;

[0022] When the drainage pump is in the state of reverse flushing, the first control valve is closed, and the second control valve is opened.

[0023] In some embodiments of the present application, the water pan is provided with a drainage port, and a plug is arranged in the drainage port. After the drainage pump reverses for a certain time, the drainage port is opened to discharge the impurities in the filter part into the water pan.

[0024] In some embodiments of the present application, a liquid level sensor for detecting the liquid level of the condensed water in the water pan is arranged in the water pan. When the liquid level of the condensed water in the water pan reaches a guard line liquid level P1, the drainage pump is opened to discharge the water in the water pan.

[0025] When the liquid level of the condensed water in the water pan is less than P0, the drainage pump is allowed to reverse, and P0 is less than P1.

[0026] Other features and advantages of the present application will become more apparent after reading the specific embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor.

[0028] Figure 1 Structure diagram of a window type air conditioner according to an embodiment Figure 1 ;

[0029] Figure 2 Structure diagram of a window type air conditioner according to an embodiment Figure 2 ;

[0030] Figure 3 Structure diagram of a window type air conditioner according to an embodiment in a stretched state

[0031] Figure 4 A side view of an internal structure of an outdoor unit of a window air conditioner according to an embodiment;

[0032] Figure 5 A top view of an internal structure of an outdoor unit of a window air conditioner according to an embodiment;

[0033] Figure 6 A structural schematic diagram of a drainage assembly according to an embodiment;

[0034] Figure 7 A structural schematic diagram of a filter according to an embodiment;

[0035] Figure 8 A structural schematic diagram of a sleeve according to an embodiment;

[0036] Figure 9 A structural schematic diagram of an assembly between a bottom of an electric control box and a bottom chassis of an outdoor unit according to an embodiment;

[0037] Figure 10 A structural schematic diagram of a bottom chassis of an outdoor unit according to an embodiment;

[0038] Figure 11 A structural schematic diagram of an electric control box according to an embodiment;

[0039] Figure 12 A flow chart of drainage anti-blocking control according to an embodiment;

[0040] Reference signs:

[0041] 100 - indoor unit;

[0042] 200 - outdoor unit, 210 - outdoor heat exchanger, 220 - rear partition, 230 - fan support, 240 - compressor, 250 - rear back plate, 260 - side plate, 270 - bottom chassis, 271 - first protruding part, 2711 - first screw hole, 2712 - folded part, 272 - second protruding part, 2721 - socket;

[0043] 300 - saddle bridge;

[0044] 400 - electric control box, 410 - second screw hole, 420 - plug-in part, 430 - extension part, 431 - notch, 440 - inclined surface;

[0045] 500 - drainage pump, 510 - water inlet pipe, 520 - water outlet pipe;

[0046] 600 - filter, 610 - sleeve, 611 - step, 620 - filter plate. Embodiments

[0047] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0048] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0049] The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0050] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0052] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0053] This embodiment discloses a window air conditioner, referring to... Figures 1 to 3 It includes an indoor unit 100 located on the indoor side, an outdoor unit 200 located on the outdoor side, and a saddle bridge 300 connecting the indoor unit 100 and the outdoor unit 200.

[0054] This window air conditioner has an n-type structure, also known as a saddle-type window unit. The indoor unit 100 and the outdoor unit 200 are located at opposite ends of the saddle bridge 300 and on the same side of the saddle bridge 300. When the saddle-type window unit is installed on the window, the saddle bridge 300 sits directly on the window, the indoor unit 100 is located on the indoor side, and the outdoor unit 200 is located on the outdoor side.

[0055] There is a certain gap between the rear panel of the outdoor unit 200 and the outdoor side wall. Air inlets are provided on the rear panel, the two side panels, and the top panel of the outdoor unit 200, and an air outlet is provided on the front side panel. Outdoor air flows into the inner cavity of the outdoor unit 200 from the air inlets on the rear, left, right, and top sides, undergoes heat exchange in the outdoor heat exchanger 210, and then flows out from the front air outlet.

[0056] There is a certain gap between the rear panel of the indoor unit 100 and the indoor side wall. The front panel and rear panel of the indoor unit 100 are provided with air inlets, and the top of the indoor unit 100 is provided with an air outlet. Indoor air flows into the inner cavity of the indoor unit 100 from the air inlets on the front and rear sides, and after heat exchange by the indoor heat exchanger, it flows out from the air outlet 111 on the top.

[0057] The saddle bridge 300 is telescopic, and its length can be adjusted to accommodate walls of different thicknesses. Figure 1 and Figure 2 The diagram shown is a structural schematic of the saddle bridge 300 when it is not stretched. Figure 3 The diagram shown is a structural schematic of the 300 saddle bridge after stretching.

[0058] The indoor unit 100 has an indoor heat exchanger, a drip tray and other components inside its cavity. The drip tray is used to collect the condensate dripping from the indoor heat exchanger.

[0059] With reference to Figure 5 , the inner cavity of the outdoor unit 200 is provided with a compressor 240, an outdoor heat exchanger 210, a rear partition 220, a fan, a fan bracket 230 and other components, the rear partition 220 is used to install the outdoor heat exchanger 210, the fan bracket 230 is used to install the fan, and the rear partition 220 is fixedly arranged on the bottom plate 270 of the outdoor unit.

[0060] Based on the n-type structure of the window type air conditioner in the embodiment, the condensate water in the indoor water pan cannot automatically flow from the indoor side to the outdoor side, and needs to be introduced to the outdoor side by the drainage pump 260.

[0061] With reference to Figure 4 and Figure 6 , the water inlet of the drainage pump 500 is provided with a water inlet pipe 510 between the indoor water pan, and the water outlet of the drainage pump 500 is provided with a water outlet pipe 520, and the drainage pump 500 is used to drain the condensate water in the water pan to the outdoor side. When the condensate water in the indoor water pan needs to be drained, the drainage pump 500 is started, and the condensate water in the water pan flows into the drainage pump 500 through the water inlet pipe 510, and then is discharged through the water outlet pipe 520.

[0062] After the air conditioner is used for a long time, impurities will accumulate in the water pan. If these impurities cannot be filtered and removed before entering the drainage pump 500, they will accumulate for a long time and cause the drainage pump 500 to be blocked, thereby affecting the normal drainage of the indoor water pan and causing the indoor water pan to overflow.

[0063] To solve this technical problem, the embodiment is provided with a filter part 600 at the communication position of the water inlet pipe 510 and the water inlet of the drainage pump 500, which is used to filter the condensate water flowing into the drainage pump 500, thereby avoiding the blockage of the drainage pump by impurities.

[0064] Usually, a filter device is arranged on the side of the water pan, and the condensate water in the water pan is first filtered once before entering the water inlet pipe 510. However, it is difficult to ensure the filtering effectiveness of impurities by filtering the condensate water once through the filter device on the side of the water pan, and there is still a risk of blocking the drainage pump after long-term use.

[0065] The embodiment is provided with a filter part 600 at the communication position of the water inlet pipe 510 and the water inlet of the drainage pump 500, which is used to filter the condensate water flowing into the drainage pump 500, thereby avoiding the blockage of the drainage pump by impurities.

[0066] The water outlet end of the water outlet pipe 520 extends to the bottom plate 270 of the outdoor unit to discharge the condensate water to the bottom plate 270. When the fan rotates, the condensate water in the bottom plate 270 splashes onto the outdoor heat exchanger 210 to cool the outdoor heat exchanger 210.

[0067] If the filter part 600 is not replaced or cleaned in time after long-term use, a large amount of impurities will accumulate on the water inlet side of the filter part 600, affecting the normal water flow of the drainage passage, increasing the drainage resistance, prolonging the drainage time, and even causing the drainage passage to be blocked.

[0068] To solve this problem, the application provides a drainage anti-blocking control method. The condensate water in the bottom plate 270 is extracted by reversing the drainage pump 500, and the filter part 600 is reversely flushed by using the clean condensate water in the bottom plate 270 to flush away the impurities accumulated on the water inlet side of the filter part 600, so as to achieve the effect of reverse flushing of the filter part 600, thereby improving the reliability of the condensate water drainage and avoiding the phenomenon of indoor water overflow.

[0069] In some embodiments of the application, since the outdoor unit is located outdoors, and the casing of the outdoor unit is provided with a ventilation opening, impurities from the outside may fall on the bottom plate 270 and reduce the cleanliness of the condensate water. If the filter part 600 is directly reversely flushed by using the condensate water on the bottom plate 270, the impurities in the condensate water on the bottom plate 270 will block the drainage pump 500 and the filter part 600 again, which is counterproductive. To solve this problem, a water storage tank (not shown) is arranged in the bottom plate 270. The water storage tank can be a groove structure that is sunken downward from the bottom plate body. A filter (not shown) is arranged at the water inlet of the water storage tank. A part of the condensate water on the bottom plate 270 flows into the water storage tank after being filtered by the filter. A cover plate is arranged at the top of the water storage tank to prevent impurities from the outside from falling into the water storage tank and to ensure the cleanliness of the condensate water in the water storage tank. The clean condensate water in the water storage tank is used as the water source for reversely flushing the filter part 600.

[0070] The water outlet pipe 520 includes a first water outlet pipe (not shown) and a second water outlet pipe (not shown). Both the first water outlet pipe and the second water outlet pipe are connected with the water outlet of the drainage pump 500.

[0071] The first water outlet pipe is used to introduce the drainage of the drainage pump 500 into the bottom plate 270. A part of the condensate water on the bottom plate 270 is used to cool the outdoor heat exchanger by being splashed by the fan, and another part of the condensate water flows into the water storage tank through the filter to reversely flush the filter part 600.

[0072] The second water outlet pipe extends into the water storage tank. When the drainage pump 500 is reversed, the clean condensate water in the water storage tank is extracted to reversely flush the filter part 600, so as to ensure that the water source for reversely flushing the filter part 600 is clean condensate water and improve the effect of reverse flushing of the filter part 600.

[0073] A first control valve is arranged on the first water outlet pipe. The first control valve is used to control the opening / closure of the water passage in the first water outlet pipe.

[0074] The second control valve is arranged on the second water outlet pipe and is used for controlling the opening and closing of the water passage in the second water outlet pipe.

[0075] When the drainage pump 500 is rotated forward to drain water, the first control valve is opened, and the second control valve is closed. The condensed water in the indoor water receiving tray flows into the bottom plate 270 of the outdoor unit through the water inlet pipe 510, the drainage pump 500 and the first water outlet pipe. Part of the condensed water in the bottom plate 270 flows into the water storage tank arranged on the bottom plate 270 after being filtered by the filter. The clean condensed water in the water storage tank is used as the water source for reverse flushing the filter part 600.

[0076] When the drainage pump 500 is rotated reversely to flush, the first control valve is closed, and the second control valve is opened. The clean condensed water in the water storage tank on the bottom plate 270 of the outdoor unit flows to the filter part 600 through the second water outlet pipe, the drainage pump 500 and the water outlet of the drainage pump 500, so as to perform reverse flushing on the filter part 600. The impurities flushed out by the reverse flushing flow into the indoor water receiving tray through the water inlet pipe 510.

[0077] In some embodiments of the present application, the water flow between the water storage tank and the bottom plate 270 of the outdoor unit relies on the gravity to flow naturally. As long as there is water on the bottom plate 270, the clean condensed water can be ensured in the water storage tank when the filter part 600 is reversely flushed, and the water quantity required for the reverse flushing can be ensured.

[0078] In some embodiments of the present application, at the initial stage of the normal drainage by the forward rotation of the drainage pump 500, the first control valve is closed, and the second control valve is opened. The clean condensed water introduced from the indoor side first flows into the water storage tank on the bottom plate 270 of the outdoor unit through the second water outlet pipe, so as to provide a clean water source for the subsequent reverse flushing of the filter part 600. After the clean water in the water storage tank is filled to a set water level, the second control valve is closed, and the first control valve is opened. The indoor condensed water then flows into the bottom plate 270 through the first water outlet pipe. In the process of subsequent reverse rotation of the drainage pump to extract the clean condensed water in the water storage tank, the water level in the water storage tank is continuously lowered, and the condensed water in the bottom plate 270 is continuously supplemented into the water storage tank after being filtered by the filter.

[0079] In some embodiments of the present application, when the filter part 600 is reversely flushed by the reverse rotation of the drainage pump 500, the impurities flushed out from the filter part 600 flow into the indoor water receiving tray through the water inlet pipe 510. If these impurities are not cleaned in time, the impurities will flow through the filter part 600 and the drainage pump 500 again when the drainage pump 500 is rotated forward to drain water, causing re-clogging.

[0080] To solve this problem, the application sets a drain port on the water receiving tray, and a plug is arranged in the drain port. After the drain pump 500 reverses for a certain time, the drain port is opened to discharge the impurities in the water receiving tray, which are washed back into the water receiving tray by the filter part 600. Thus, after the reverse washing, when normal drainage is performed, the impurities washed down can be prevented from repeatedly blocking the filter part 600 and the drain pump 500.

[0081] In some embodiments of the application, the drain pump 500 is regularly started to reverse to regularly perform reverse washing on the filter part 600. This way has simple control logic.

[0082] To more finely control the reverse washing process, in some embodiments of the application, the drain pump 500 determines whether to reverse according to the actual pumping time of a single pumping.

[0083] That is, if the pumping time of a single pumping of the drain pump 500 is relatively long, it indicates that the condensate water in the indoor water receiving tray is relatively clean, the filter part 600 is not blocked, and the drainage passage is smooth. In this case, the drain pump 500 can normally perform forward rotation to drain water. If the pumping time of a single pumping of the drain pump 500 is relatively long, it indicates that the filter part 600 is blocked, the drainage resistance is large, and the drainage passage is not smooth. In this case, the drain pump 500 is started to reverse to timely perform reverse washing on the filter part 600.

[0084] In some embodiments of the application, the reverse time of the drain pump 500 is in a proportional relationship with the actual pumping time of a single pumping of the drain pump 500.

[0085] That is, the longer the pumping time of a single pumping of the drain pump 500, the larger the drainage resistance and the more serious the blockage of the filter part 600. In this case, the reverse time of the drain pump 500 is appropriately prolonged to increase the reverse washing time of the filter part 600 and improve the washing effect.

[0086] In some embodiments of the application, the drain pump 500 has a first set pumping time of a single pumping. When the actual pumping time of a single pumping of the drain pump 500 is greater than the first set pumping time, it indicates that the filter part 600 is seriously blocked. In this case, the air conditioner stops refrigeration operation, and the air conditioner sends a reminder to replace the filter part 600, so that the user timely replaces the filter part 600.

[0087] In some embodiments of the application, the drain pump 500 has a second set pumping time of a single pumping, which is less than the first set pumping time. When the actual pumping time of a single pumping of the drain pump 500 is between the first set pumping time and the second set pumping time, it indicates that the filter part 600 is slightly blocked. In this case, the drain pump 500 is reversed to perform reverse washing on the filter part 600, and the drain pump 500 is automatically stopped after reversing for a certain time.

[0088] When the single actual pumping duration of the drainage pump 500 is less than the second set duration, the filter portion 600 is not blocked, and the air conditioner operates normally.

[0089] Figure 12 The drainage control flowchart is used when the indoor water receiving tray needs to be drained. The drainage pump 500 is started, and the indoor water receiving tray is drained to the outdoor bottom plate 270. When the water level in the water receiving tray is lowered to the set water level, the single drainage is completed, and the system monitors the actual drainage duration of the drainage pump 500 during the single drainage.

[0090] When the single actual pumping duration of the drainage pump 500 is greater than the first set duration, the air conditioner stops the refrigeration operation, and the air conditioner sends a reminder to replace the filter portion 600.

[0091] When the single actual pumping duration of the drainage pump 500 is between the first set duration and the second set duration, the drainage pump 500 is reversed to perform reverse flushing on the filter portion 600.

[0092] When the single actual pumping duration of the drainage pump 500 is less than the second set duration, the air conditioner operates normally.

[0093] After the reverse flushing, the next single pumping duration of the drainage pump 500 is monitored, and the above control process is repeated.

[0094] In some embodiments of the present application, the water receiving tray is provided with a liquid level sensor for detecting the condensate water level in the water receiving tray. When the condensate water level in the water receiving tray reaches the guard line level P1, the drainage pump 500 is started to drain the water receiving tray, so as to prevent the condensate water in the water receiving tray from overflowing.

[0095] When the condensate water level in the water receiving tray is less than P0, the drainage pump 500 is allowed to be reversed. That is, when the drainage pump 500 is reversed, it is not only related to the blocking condition of the filter portion 600, but also related to the liquid level in the water receiving tray at the time.

[0096] When the liquid level in the water receiving tray approaches the guard line level P1 of the drainage opening, if the drainage pump 500 is reversed at this time, the condensate water flushed into the water receiving tray is likely to cause the liquid level in the water receiving tray to exceed P1 and cause the water to overflow. Therefore, when the actual liquid level in the water receiving tray is set to be a certain distance from the guard line level P1, the drainage pump 500 is allowed to be reversed to perform reverse flushing, so that the water flushed into the water receiving tray will not cause the water to overflow.

[0097] In some embodiments of the present application, the filter part 600 is a detachable structure, that is, the filter part 600 and the water inlet of the water pump 500 are detachably connected. When the impurities accumulated on the filter part 600 are too much to affect the water flow, the filter part 600 can be detached for cleaning or replaced with a new filter part, which is convenient to use.

[0098] In some embodiments of the present application, referring to Figure 7 and Figure 8 , the filter part 600 includes a sleeve 610, which is a hollow cylinder structure with both ends through. The sleeve 610 is provided with a filter plate 620. One end of the sleeve 610 is connected with the water outlet end of the water inlet pipe 510, and the other end of the sleeve 610 is connected with the water inlet of the water pump 500. The filter plate 620 is used for filtering the condensed water flowing through the sleeve 610.

[0099] The filter part 600 has a simple structure and low cost, and is convenient to connect with the water inlet pipe 610 and the water pump 500.

[0100] In some embodiments of the present application, one end of the sleeve 610 is detachably inserted with the water outlet end of the water inlet pipe 510, and the other end of the sleeve 610 is detachably inserted with the water inlet of the water pump 500. The plug-in installation mode improves the convenience of disassembling and assembling the filter part 600.

[0101] In some embodiments of the present application, a step 611 is arranged on the inner wall of the sleeve 610. The step 611 extends along the circumferential direction of the inner wall of the sleeve 610. The filter plate 620 is arranged on the step 611 near the circumferential edge. The water outlet end of the water inlet pipe 510 or the water inlet of the water pump 500 is abutted with the step 611 to limit the filter plate 620.

[0102] For example, the water outlet end of the water inlet pipe 510 is abutted with the step 611, and the filter plate 620 is limited between the water outlet end of the water inlet pipe 510 and the step 611.

[0103] The filter plate 620 is fixed in the abutting limiting mode, and does not need to be provided with a fixing structure, which is simple in structure and convenient for assembling the filter part 600 and disassembling and replacing the filter plate 620.

[0104] In some embodiments of the present application, referring to Figure 5 , the outdoor unit 200 is provided with a rear partition plate 220 for installing the outdoor heat exchanger 210. The water pump 500 is arranged on the rear partition plate 220. The water inlet of the water pump 500 is upwardly arranged, and the water outlet is downwardly arranged. The water inlet pipe 510 drawn from the water pan is introduced into the outdoor unit 200 through the saddle bridge 300. The water outlet pipe 520 extends downwardly from the water outlet of the water pump 500 to the bottom plate 270 of the outdoor unit.

[0105] The drain pump 500 is arranged on the rear partition plate 220, and the structure is compact, and the fixed installation of the drain pump 500 in the outdoor unit 200 is realized.

[0106] In some embodiments of the present application, the window air conditioner in the present application is a variable frequency window air conditioner, and the electric control box 400 is large in size and cannot be installed in the saddle bridge 300. Therefore, in the present embodiment, the electric control box 400 is arranged in the outdoor unit 200.

[0107] Referring to Figure 5 , the electric control box 400 is arranged close to the rear back plate 250 of the outdoor unit, and the space in the outdoor unit 200 is fully utilized, and the structure layout is compact. There is a gap between the electric control box 400 and the side plate 260 of the outdoor unit, and the water inlet pipe 510 extending from the saddle bridge 300 extends to the water inlet of the drain pump 500 through the gap.

[0108] The bottom of the electric control box 400 is fixedly connected with the bottom plate 270 of the outdoor unit, and the top of the electric control box 400 is fixedly connected with the top plate of the outdoor unit, so as to realize the fixed installation of the electric control box 400 in the outdoor unit. The gap between the electric control box 400 and the side plate 260 of the outdoor unit is arranged, on the one hand, to facilitate the circulation of the heat dissipation air flow in the outdoor unit 200 to improve the heat dissipation effect of the electric control box 400, and on the other hand, to leave a pipe running gap for the water inlet pipe 510 between the side of the electric control box 400 and the side plate 260 of the outdoor unit, to improve the compactness and convenience of the pipe running layout.

[0109] The rear back plate 250 is provided with an air inlet, and the outdoor side air inlet directly acts on the electric control box 400, which helps to improve the heat dissipation effect of the electric control box 400.

[0110] In some embodiments of the present application, the specific installation position of the electric control box 400 in the outdoor unit 200 and the outline thereof are improved, so as to realize the compact installation of the electric control box 400 in the outdoor unit 200 and avoid interference with other components in the outdoor unit 200.

[0111] The space between the rear partition plate 220 and the rear back plate 250 is divided into three regions in communication by the fan bracket 230, as shown in the orientation. Figure 5 For example, from left to right, the first space region, the second space region, and the third space region are arranged in sequence, the first space region is the region surrounded by the left side of the rear partition plate 220 and the left side wall of the rear back plate 250 of the outdoor unit, the second space region is the region between the middle part of the rear partition plate 220 and the rear back plate 250, and the third space region is the region surrounded by the right side of the rear partition plate 220 and the right side wall of the rear back plate 250 of the outdoor unit.

[0112] The compressor 240 is located in the first spatial area on the left, and the electrical control box 400 is located in the second spatial area in the middle and the third spatial area on the right. The electrical control box 400 is installed by making full use of the existing unused space within the outdoor unit 200. The electrical control box 400 and the compressor 240 are aligned along the width direction of the outdoor unit 200 (i.e.,...). Figure 5 The compressor 240 and the electrical control box 400 are arranged at intervals in the left and right directions, and there is a gap between them for gas flow so that they do not interfere with each other.

[0113] Part of the electrical control box 400 is located in the area between the rear partition 220 and the rear back panel 250, and another part is located in the area between the fan bracket 230 and the rear back panel 250, that is, in Figure 5 In the orientation shown, the left part of the electrical control box 400 is located in the second space area in the middle of the outdoor unit 200, and the right part of the electrical control box 400 is located in the third space area on the right side of the outdoor unit 200.

[0114] from Figure 5 It can be seen that the presence of the fan and fan bracket 230 makes the distance between the second space area in the middle and the back panel 250 relatively close. The electrical control box 400 is provided with an inclined surface 440 on the side facing the fan bracket 230, and a gap for gas flow is formed between the inclined surface 440 and the fan bracket 230.

[0115] The inclined surface 440 on the electrical control box 400 serves two purposes. First, it facilitates the smooth installation of the left part of the electrical control box 400 into the narrow space between the fan bracket 230 and the rear panel 250, achieving a compact installation. Second, the inclined surface 440 and the fan bracket 230 form a gap for gas flow, allowing external gas entering from the back, top, and left and right sides of the outdoor unit to flow smoothly through the fan bracket 230 to the fan without being obstructed by the electrical control box 400, thus achieving normal heat exchange and heat dissipation of the outdoor unit 200 without affecting its operating performance.

[0116] The drain pump 500 is located near the side panel 260 of the outdoor unit. The drain pump 500 is located in the third space area mentioned above, making full use of the area between the right side of the electrical control box 400 and the rear partition 220.

[0117] In some embodiments of this application, reference is made to Figures 9 to 11 The chassis 270 has two spaced protrusions, referred to as the first protrusion 271 and the second protrusion 272 respectively. The bottom of the electrical control box 400 is connected to the first protrusion 271 and the second protrusion 272 to fix the bottom of the electrical control box 400 to the chassis 270, and a gap is formed between the bottom of the electrical control box 400 and the chassis 270.

[0118] The installation position of the electric control box 400 is lifted by the first protruding part 271 and the second protruding part 272, so that the bottom of the electric control box 400 is kept a gap from the bottom plate 270. In the case that the bottom plate 270 has accumulated water when the air conditioner is cooling, the gap between the bottom of the electric control box 400 and the bottom plate 270 can effectively prevent the accumulated water on the bottom plate 270 from entering the electric control box 400, thereby achieving the waterproof effect of the electric control box 400.

[0119] In some embodiments of the present application, for the specific installation structure between the bottom of the electric control box 400 and the first protruding part 271 and the second protruding part 272, the first protruding part 271 is provided with a first screw hole 2711, and the second protruding part 272 is provided with a socket 2721; the bottom of the electric control box 400 is provided with a second screw hole 410 and a plug-in part 420; the first screw hole 2711 and the second screw hole 410 are fixed by a connecting member such as a screw, and the plug-in part 420 is inserted into the socket 2721.

[0120] During installation, the plug-in part 420 is first inserted into the socket 2721 to achieve the preliminary installation and positioning of the electric control box 400 on the bottom plate 270, the first screw hole 2711 and the second screw hole 410 are then vertically aligned, and then a connecting member such as a screw is used to fix the first screw hole 2711 and the second screw hole 410, thereby achieving the fixed installation of the electric control box 400 on the bottom plate 270. The top of the electric control box 400 is connected to the top wall of the outdoor unit 200 by a connecting member.

[0121] In some embodiments of the present application, the bottom of the electric control box 400 is provided with an extension part 430 extending forward on the front side edge, and the extension part 430 is provided with a second screw hole 410. The structure after the installation of the extension part 430 and the first protruding part 271 is described in detail below with reference to Figure 9 .

[0122] The provision of the extension part 430 facilitates the screw installation between the second screw hole 410 and the first screw hole 2711.

[0123] In some embodiments of the present application, the top surface of the first protruding part 271 is provided with a folded part 2712 folded upward, and the folded part 2712 is a sheet-shaped structure. The extension part 430 is provided with a notch 431, and the folded part 2712 is embedded in the notch 431.

[0124] During installation, the folded part 2712 is embedded in the notch 431 to achieve the installation and positioning, so that the first screw hole 2711 and the second screw hole 410 can be aligned smoothly, thereby facilitating the screw installation.

[0125] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0126] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1.A method for preventing clogging of a drain of a window air conditioner, the air conditioner comprising: an indoor unit arranged on an indoor side, the indoor unit having a water pan arranged therein for receiving condensed water dripped from an indoor heat exchanger; an outdoor unit arranged on an outdoor side; and a saddle bridge connected between the indoor unit and the outdoor unit; and characterized in that the air conditioner further comprises: a drain pump arranged in the outdoor unit, a water inlet pipe being arranged between a water inlet of the drain pump and the water pan, a water outlet pipe being arranged at a water outlet of the drain pump, the drain pump being configured to drain the condensed water in the water pan to a bottom plate of the outdoor unit; a filter part arranged at a position where the water inlet pipe communicates with the water inlet of the drain pump, the filter part being configured to filter the condensed water flowing into the drain pump; the drain pump being reversed to draw the condensed water in the bottom plate to backwash the filter part; the drain pump being configured to determine whether to be reversed according to a single actual water pumping duration; a liquid level sensor arranged in the water pan for detecting a liquid level of the condensed water in the water pan, the drain pump being turned on to drain the water pan when the liquid level of the condensed water in the water pan reaches a guard line liquid level P1; the drain pump being allowed to be reversed only when the liquid level of the condensed water in the water pan is less than P0, P0 being less than P1; the drain pump having a single water pumping first set duration, the air conditioner being configured to stop a refrigeration operation and to issue a reminder to replace the filter part when the single actual water pumping duration of the drain pump is greater than the first set duration; the filter part comprising a sleeve, a filter plate being arranged in the sleeve, one end of the sleeve being detachably inserted into a water outlet end of the water inlet pipe, the other end of the sleeve being detachably inserted into the water inlet of the drain pump, the filter plate being configured to filter the condensed water flowing through the sleeve, the filter part being configured to be replaced by replacing only the filter plate; the drain pump having a single water pumping second set duration, the second set duration being less than the first set duration; the drain pump being reversed to backwash the filter part when the single actual water pumping duration of the drain pump is between the first set duration and the second set duration; the air conditioner being configured to operate normally when the single actual water pumping duration of the drain pump is less than the second set duration; a duration of the reversal of the drain pump being in a positive correlation with the single actual water pumping duration of the drain pump; the bottom plate having a water storage tank arranged therein, a filter member being arranged at a water inlet of the water storage tank; the water outlet pipe comprising a first water outlet pipe and a second water outlet pipe; the first water outlet pipe being configured to introduce the drain to the bottom plate, a part of the condensed water on the bottom plate being filtered by the filter member and then flowing into the water storage tank, the first water outlet pipe having a first control valve arranged thereon; the second water outlet pipe being inserted into the water storage tank, the drain pump being configured to draw the clean condensed water in the water storage tank to backwash the filter part when the drain pump is reversed, the second water outlet pipe having a second control valve arranged thereon; the first control valve being opened and the second control valve being closed when the drain pump is rotated to drain water; and the first control valve being closed and the second control valve being opened when the drain pump is reversed to backwash. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The drain clogging prevention control method of a window type air conditioner according to claim 1, characterized by, ​ 3. The drain clogging prevention control method of a window type air conditioner according to claim 2, characterized by, ​ 4. The drain clogging prevention control method of a window type air conditioner according to claim 2, characterized by, ​ ​ 5. The drain clogging prevention control method of a window type air conditioner according to claim 4, characterized by, ​ 6. The drain clogging prevention control method of a window type air conditioner according to claim 1, characterized by, ​ 7. The drain clogging prevention control method of a window type air conditioner according to any one of claims 1 to 6, characterized by, ​ ​ ​ ​ ​ ​ 8. The drain clogging prevention control method of a window type air conditioner according to any one of claims 1 to 6, characterized by, The water collecting tray is provided with a drain port, and a plug is arranged in the drain port; after the drain pump reverses for a certain time, the drain port is opened to discharge the impurities in the filter part into the water collecting tray.

Images