Water pan

Abstract

The utility model discloses a water pan which comprises a bearing portion and a circulation portion, a first inclined face is formed on the bearing portion, the first inclined face inclines downwards, the circulation portion is communicated with the bearing portion and located at the tail end of the bearing portion in the inclination direction of the first inclined face, and a second inclined face is formed on the circulation portion. The second inclined face inclines downwards, and the tail end position, in the inclination direction of the second inclined face, of the circulation part communicates with a water outlet pipe. The water pan has the effect of smoothly discharging accumulated water below the surface air cooler.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning unit equipment, and in particular to a water receiving tray. Background Technology

[0002] Currently, central air conditioning equipment - air handling units - generally use surface coolers for cooling. During the cooling process, condensate is generated, and this condensate is collected through a drip tray installed below the surface cooler and discharged outside the unit.

[0003] The processing and installation methods of water collection pans vary among manufacturers in the industry. A common method is to bend the water collection pan through sheet metal to create a slope on the surface of the pan towards the outlet pipe, allowing condensate to drain smoothly. The surface cooler is supported by a number of pads placed inside the water collection pan. However, in existing water collection pans, because they need to support the surface cooler, the area below the surface cooler is often set horizontally. But after long-term support of the surface cooler, the surface of the water collection pan will become concave. Condensate in the concave area cannot drain to the sloped part of the water collection pan, resulting in water accumulation and affecting the unit's operating status. Therefore, this application provides a water collection pan that facilitates the drainage of condensate below the surface cooler into the outlet pipe. Utility Model Content

[0004] The purpose of this utility model is to provide a water receiving tray to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The solution to the technical problem of this utility model is:

[0006] Water collection tray, including:

[0007] The supporting part has a first inclined surface that slopes downwards.

[0008] A flow section is connected to the support section and located at the end of the support section along the inclined direction of the first inclined surface. The flow section forms a second inclined surface, which is inclined downwards. A water outlet pipe is connected to the end of the flow section along the inclined direction of the second inclined surface.

[0009] This technical solution has at least the following beneficial effects: When installing the air conditioning unit, the surface cooler is installed on the support part of the water receiving pan. When the condensate produced in the surface cooler drips into the water receiving pan, it first falls into the support part. Due to the downward tilt of the first inclined surface, it naturally falls into the flow part connected to the support part. Then, the second inclined surface allows the condensate to flow to the outlet pipe, reducing the accumulation of condensate under the surface cooler, which would otherwise cause corrosion, mold growth, and other adverse effects on the unit, thus extending the service life of the unit.

[0010] As a further improvement to the above technical solution, the water receiving tray also includes a water seal assembly, which includes a mounting base, a connecting pipe, and a sealing element. A water seal channel is formed in the mounting base. One end of the connecting pipe is connected to the water outlet pipe, and the other end is connected to the water seal channel. The sealing element is used to seal the water seal channel.

[0011] During unit operation, the internal pressure of the unit is negative relative to atmospheric pressure. If the water outlet pipe is directly connected to the outside, it will cause air leakage and affect the operation of the unit. The above solution connects the water seal assembly to the end of the water outlet pipe that extends out of the unit. During normal use, the water seal assembly blocks the water seal channel with the sealing parts, thereby sealing the condensate in the connecting pipe and forming a seal for the entire water outlet pipe, reducing air leakage and cross-flow of the air conditioning unit.

[0012] As a further improvement to the above technical solution, the sealing component includes a sealing plate and a first float. The end of the connecting pipe away from the outlet pipe extends downward. The sealing plate is installed in the water seal channel. A sealing space is formed between the downward side of the sealing plate and the inner wall of the water seal channel. The input end of the water seal channel is located in the sealing space. The sealing plate has an upwardly extending through hole. The first float is movably installed in the water seal channel and located outside the sealing space. The first float can be moved to engage with the through hole.

[0013] With the above technical solution, when the air conditioning unit is in use, the condensate produced flows into the connecting pipe. When the condensate in the vertically extending connecting pipe overcomes the negative pressure in the unit and flows, the condensate flows into the sealing space and lifts the first float ball, so that the sealing space is connected to the water seal channel through the through hole. The condensate flows smoothly into the water seal channel. When no condensate is produced, the negative pressure generated by the unit draws the first float ball to the through hole, forming a seal on the through hole, thereby sealing the entire water seal channel and reducing the decrease in cooling and heating efficiency caused by the mixing of external gas into the unit.

[0014] As a further improvement to the above technical solution, the mounting base is provided with a limiting plate inside the water seal channel and outside the sealing space. An active space is formed between the side wall of the limiting plate near the connecting pipe, the outer side wall of the sealing plate facing upward, and the inner side wall of the water seal channel. A water outlet gap is left between the limiting plate and the sealing plate, and the first float is located in the active space.

[0015] When the condensate water pushes the first float up, the limiting plate restricts the first float within the movement space, preventing the first float from moving into the water seal channel under the impact of the condensate water, thus causing the seal to fail.

[0016] As a further improvement to the above technical solution, a filter seat is provided between the water receiving tray and the water outlet pipe. The filter seat is installed at the output end of the water flow section. A filter channel is formed inside the filter seat. The filter channel, the water outlet pipe and the connecting pipe are connected one by one. A filter plate is provided in the filter channel of the filter seat.

[0017] Because air conditioning units draw in outside air at the air intake duct, they may draw in outside dust into the unit. The dust falls into the water collection pan and accumulates, then flows into the subsequent pipes with the condensate, which may cause blockage and corrosion. By installing a filter plate at the water outlet, the dust is carried away by the condensate and accumulates on the filter plate, making it easier to clean the dust on the filter plate during later maintenance, reducing the workload and cost of drainage system maintenance.

[0018] As a further improvement to the above technical solution, the filter seat is connected to a sliding groove on the inner wall of the filter channel, a scraper is installed in the sliding groove, and the filter seat is provided with a driving component for driving the scraper to slide in the sliding groove. The sliding direction of the scraper is horizontal and perpendicular to the water flow direction in the filter channel. The scraper is provided with a leakage hole, and the scraper can slide until the leakage hole covers the filter plate.

[0019] After prolonged use, a large amount of dust usually accumulates in front of the filter plate. When the dust clumps together, it may clog the filter plate. With the above solution, after the filter plate becomes clogged, the drive component is activated to drive the scraper to move on the filter plate, thereby scraping away the dust accumulated on the filter plate. The condensate then flows out through the holes on the scraper, reducing the excessive accumulation of impurities that could cause the filter plate to become clogged, thus maintaining the filter plate's good filtration performance at all times.

[0020] As a further improvement to the above technical solution, the driving assembly includes a driving plate and a power source. The filter seat has a sliding groove connected to the side of the sliding groove away from the filter channel. The sliding groove extends vertically. The driving plate is installed in the sliding groove. The power source is used to drive the driving plate to slide vertically in the sliding groove. The driving plate has a guide surface at its upper end. The guide surface is inclined downwards along the direction gradually approaching the sliding groove. The scraper is located on the moving path of the guide surface.

[0021] The power source drives the drive plate upward until the guide surface abuts the scraper, and pushes the scraper to move horizontally until the scraper completely covers the filter plate, thus removing the dust and impurities accumulated on the filter plate. This solution separates the power source from the scraper through the drive plate, reducing the impact of condensate on the power source and ensuring the stability of the scraper's movement.

[0022] As a further improvement to the above technical solution, the power source includes a second float, and the filter seat is provided with a connecting rod that can slide in the vertical direction. One end of the connecting rod passes through the filter seat and is connected to the drive plate, and the other end passes through the flow section and is connected to the second float.

[0023] When excessive accumulation of dust and impurities causes blockage of the filter plate, the water level in the flow section rises, causing the second float to move vertically. Through the linkage of the connecting rod, the drive plate is driven upward, which in turn drives the scraper to automatically clean the filter plate. Since the second float is in direct contact with the condensate, it can provide feedback on the drainage situation in a timely manner, ensuring that the filter plate will not fail due to the accumulation of dust and impurities, and ensuring the stability of the drainage of the water tray.

[0024] As a further improvement to the above technical solution, the height difference between the highest and lowest points of the first inclined surface is not less than 15 mm. Through the rated height difference, the potential energy of the condensate at the bearing part is significantly enhanced. Even if the bearing part carries the surface cooler for a long time and a depression is formed, the condensate can still flow through the first inclined surface to the second inclined surface.

[0025] As a further improvement to the above technical solution, the supporting part and the flow part are integrally formed. The integral structure reduces the gap and weak points at the connection between the supporting part and the flow part, effectively avoiding condensate leakage caused by gaps. At the same time, it is easier to ensure the dimensional accuracy and shape consistency of the supporting part and the flow part during the manufacturing process, thereby improving the production quality and efficiency of the product. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the water receiving tray of this utility model when it supports the surface cooler;

[0028] Figure 2 This is a side view of the water receiving tray of this utility model;

[0029] Figure 3 This is a front view of the water receiving tray of this utility model;

[0030] Figure 4 The water-cooling assembly of the water receiving tray of this utility model is along Figure 3 A cross-sectional view from the perspective of the middle BB (Black-Body) section;

[0031] Figure 5 The filter seat edge of the water receiving tray of this utility model Figure 2 A cross-sectional view from the perspective of the middle AA (analogous to ...

[0032] Figure 6 This is a cross-sectional view of the filter seat of the water receiving tray of this utility model from a top view perspective. Attached Figure Description

[0034] 1. Support unit; 11. Bracket; 2. Flow unit; 3. Water seal assembly; 31. Mounting base; 32. Connecting pipe; 33. Sealing plate; 34. First float; 35. Water seal channel; 36. Sealing space; 37. Limiting plate; 38. Movement space; 4. Filter base; 41. Filter channel; 42. Filter plate; 43. Sliding groove; 431. Scraper; 44. Sliding groove; 441. Drive plate; 45. Connecting rod; 46. Second float. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0039] In existing air conditioning unit condensate trays, the tray is usually divided into two parts: a horizontal part that supports the condensate and a sloping part. When condensate from the condensate drips onto the horizontal part, it flows into the sloping part and then out of the air conditioning unit due to the slope. However, after supporting the condensate for a long time, the tray will develop depressions, and the horizontal tray cannot drain all the condensate to the sloping part, which can lead to water accumulation, corrosion, or bacterial growth. Therefore, this application provides a condensate tray that facilitates the drainage of water accumulated under the condensate.

[0040] Reference Figure 1 , Figure 2 and Figure 3 This application provides a water receiving tray, which is installed inside an air conditioning unit. The water receiving tray includes:

[0041] The bearing part 1 has a first inclined surface formed on its upper surface, and the first inclined surface is inclined downward. The bottom of the bearing part 1 is provided with a bracket 11, and the lower surface of the bracket 11 is parallel to the horizontal plane.

[0042] The circulation section 2 is located at the end of the support section 1 along the inclined direction of the first slope. The circulation section 2 is connected to the support section 1. A second slope is formed on the upper surface of the circulation section 2. The second slope is inclined downward. The projections of the straight lines containing the inclined directions of the first slope and the second slope on the horizontal plane are perpendicular to each other. A water outlet pipe is connected to the end of the circulation section 2 along the inclined direction of the second slope.

[0043] The first inclined surface slopes downwards, effectively catching the condensate produced by the surface cooler and using gravity to quickly guide the condensate to the flow section 2, reducing its residence time in the bearing section 1 and preventing water accumulation. The second inclined surface of the flow section 2 also slopes downwards. These two inclined surfaces work together to form a relay-style flow path, allowing the condensate to flow more efficiently and accurately to the outlet pipe, greatly improving the drainage speed and smoothness of the condensate. This double-inclined flow guide design effectively avoids the problem of condensate accumulation caused by the depression at the bearing section of the traditional water tray, ensuring the stability and reliability of the water tray's drainage. This provides strong support for the normal operation of the central air conditioning air handling unit, reduces the risk of equipment failure caused by poor drainage, extends the service life of the unit, reduces maintenance costs and downtime, and ensures that the unit can operate stably under different operating conditions, maintaining indoor environmental comfort and air quality.

[0044] Specifically, the height difference between the highest and lowest points of the first slope and the height difference between the highest and lowest points of the second slope are both no less than 15 mm. This design ensures that after the surface cooler has been supported for a long time, the supporting part 1 still has enough inclination to allow condensate to flow into the circulation part 2.

[0045] Specifically, the first inclined surface is parallel to the airflow direction of the air conditioning unit and extends downward. The circulation section 2 is installed in front of the support section 1 along the airflow direction of the air conditioning unit. The height of the circulation section 2 is lower than the height of the support section 1. The second inclined surface is horizontal and perpendicular to the airflow direction of the air conditioning unit and tilts downward. Under the action of the airflow of the air conditioning unit, the condensate on the support section 1 can flow to the circulation section 2 more quickly. After the condensate enters the circulation section 2, the circulation section 2, which is lower than the support section 1, is less impacted by the airflow, thereby reducing the oscillation of the condensate in the circulation section 2 and improving the stability of the condensate flow in the circulation section 2.

[0046] As a further preferred embodiment, the highest point of the bottom of the flow section 2 is located below the lowest point of the support section 1, and the lengths of the support section 1 and the flow section 2 are equal in the horizontal and vertical airflow direction, so that the condensate at each point on the support section 1 can flow directly to the flow section 2 along the airflow direction.

[0047] As a further preferred embodiment, the support part 1 is provided with a connecting frame, the upper surface of which is flush with the horizontal plane. The surface cooler is installed on the connecting frame so that the surface cooler can maintain a horizontal state and provide stable cooling.

[0048] In this embodiment, the support part 1 and the flow part 2 are integrally bent from the same sheet metal. Each outward-facing side of the support part 1 and the flow part 2 is integrally bent with a retaining edge. The retaining edge can block the condensate from each part of the support part 1 and the flow part 2. Moreover, by integrally forming each component, the gaps at the joints of each part on the water receiving tray are reduced, the sealing degree of the water receiving tray is improved, and the risk of condensate flowing out of the water receiving tray into the air conditioning unit and causing equipment failure is reduced.

[0049] Reference Figure 3 and Figure 4The water seal assembly 3 is installed outside the air conditioning unit. The water seal assembly 3 includes a mounting base 31, a connecting pipe 32, and a sealing component. The mounting base 31 is located below the flow section 2, and a water seal channel 35 is formed within the mounting base 31. The connecting pipe 32 extends vertically, with one end connected to the outlet pipe and the other end connected to the water seal channel 35. The sealing component is used to seal the water seal channel 35. Specifically, a first right-angle connector is provided between the connecting pipe 32 and the outlet pipe, and a second right-angle connector is provided between the connecting pipe 32 and the mounting base 31. Both the connecting pipe 32 and the first and second right-angle connectors are connected by... The threaded connection uses a sealing component to block the water seal channel 35. When a negative pressure is formed inside the air conditioning unit relative to atmospheric pressure, the sealing component blocks the water seal channel 35, preventing external airflow from passing through the water seal channel 35 and entering the air conditioning unit along the connecting pipe 32. This causes air mixing at the output end of the surface cooler, reducing the air quality of the air conditioning unit. When condensate flows into the connecting pipe 32, the sealing component seals the condensate in the connecting pipe 32. Under the action of gravity, the condensate accumulates below the connecting pipe 32, forming a seal, further reducing the possibility of external airflow entering the air conditioning unit and causing air mixing.

[0050] The water seal channel 35 extends horizontally, and the sealing component includes a sealing plate 33 and a first float 34. The sealing plate 33 is L-shaped, with its inner side facing the input end of the water seal channel 35. The two ends of the sealing plate 33 are respectively connected to the inner walls of the upper and lower sides of the input end of the water seal channel 35. A sealing space 36 is formed between the lower side of the sealing plate 33 and the inner wall of the water seal channel 35. The input end of the water seal channel 35 is located in the sealing space 36. An upwardly extending through hole is provided on the sealing plate 33. The first float 34 is movably installed in the water seal channel 35 and located directly above the sealing space 36. The first float 34 can be moved to engage with the through hole. In this embodiment, the first float 34 is a ping-pong ball.

[0051] The mounting base 31 is provided with a vertically extending limiting plate 37 inside the water seal channel 35 and directly above the sealing space 36. An active space 38 is formed between the side wall of the limiting plate 37 near the connecting pipe 32, the outer side wall of the sealing plate 33 facing upward, and the inner side wall of the water seal channel 35. The first float 34 is located in the active space 38, and a water outlet gap is left between the limiting plate 37 and the sealing plate 33.

[0052] With the above scheme, when the surface cooler is operating normally and producing condensate, the condensate flows from the water collection pan through the connecting pipe 32 to the sealing space 36 of the water seal channel 35. When the gravity of the condensate at the connecting pipe 32 is greater than the suction force formed by the negative pressure inside the air conditioning unit, the condensate overcomes the negative pressure inside the air conditioning unit and lifts the first float 34. At this time, the sealing space 36 is connected to the movable space 38 through the through hole, and then connected to the output end of the water seal channel 35 through the water outlet gap. The condensate can pass through the sealing space 36 and the movable space 38 in sequence into the water seal channel 35 and flow to the external water collection point. When the condensate does not need to be discharged, under the action of the negative pressure inside the air conditioning unit and the gravity of the first float 34 itself, the first float 34 is stably locked at the through hole, sealing the sealing space 36, so that the inside and outside of the air conditioning unit are not interconnected, thereby reducing the phenomenon of air leakage and mixing.

[0053] In this embodiment, the first float 34 has a relatively small self-weight, which makes it easy for negative pressure or condensate water to push the first float 34. During normal drainage, the first float 34 can float freely within the activity space 38 of the water seal channel 35 without obstructing the drainage of the connecting pipe 32. The range of motion of the first float 34 is limited by the limiting plate 37 to ensure the stability and predictability of its movement trajectory.

[0054] The mounting base 31 is equipped with a removable top cover. After removing the top cover, the inside of the mounting base 31 can be cleaned.

[0055] Reference Figure 2 , Figure 5 and Figure 6 A filter seat 4 is installed between the flow section 2 and the outlet pipe in the water receiving tray. The filter seat 4 is installed at the output end of the flow section 2. The filter seat 4 is box-shaped and has a filter channel 41 extending horizontally inside. The filter channel 41, the outlet pipe, and the connecting pipe 32 are connected one by one. The filter seat 4 has a filter plate 42 in the filter channel 41. When the fan in the air conditioning unit draws outside air into the air conditioning unit, it brings dust and impurities from the outside into the air conditioning unit. After the dust settles in the water receiving tray, it may flow with the water flow into the connecting pipe 32 and the sealing space 36, causing dust to accumulate inside the connecting pipe 32 and the sealing plate 33 fixedly installed on the mounting base 31, blocking the pipe and making it difficult for condensate to flow. By setting up the filter seat 4, dust and impurities are blocked outside the connecting pipe 32. When cleaning the water receiving tray, only the smaller space of the filter channel 41 needs to be cleaned, reducing the workload of cleaning.

[0056] The filter base 4 has a sliding groove 43 connected to the inner wall of the filter channel 41. The sliding groove 43 extends horizontally and is located on one side of the filter channel 41 in the left-right direction. A scraper 431 is installed in the sliding groove 43. The scraper 431 is located on the side of the filter plate 42 near the flow section 2. The filter base 4 is provided with a drive assembly for driving the scraper 431 to slide in the sliding groove 43. The sliding direction of the scraper 431 is horizontal and perpendicular to the water flow direction in the filter channel 41. The scraper 431 has leakage holes, which correspond one-to-one with the holes on the microporous plate. The scraper 431 can slide until the leakage holes cover the filter plate 42.

[0057] In this embodiment, the driving assembly includes a driving plate 441 and a power source. A sliding groove 44 is connected to the sliding channel 43 on the side of the sliding groove 43 in the horizontal direction away from the filter channel 41. The sliding groove 44 extends vertically. The driving plate 441 is installed within the sliding groove 44. The power source drives the driving plate 441 to move and position itself vertically within the sliding groove 44. A guide surface is provided at the upward-facing end of the driving plate 441. The guide surface gradually slopes downwards from the side away from the sliding groove 43 to the side closer to the sliding groove 43. The end of the scraper 431 away from the filter channel 41 can extend into the sliding groove 44. The power source includes a second float 46 located on the sliding path of the drive plate 441 at the guide surface. The mounting base 31 has a connection hole with its length direction parallel to the water flow direction in the flow section 2. One end of the connection hole is connected to the sliding groove 44 and the other end is connected to the flow section 2. The connection hole extends vertically within the mounting base 31. The mounting base 31 also includes a connecting rod 45 with one end inserted into the connection hole and connected to the drive plate 441, and the other end extending out of the flow section 2. The second float 46 is installed at the end of the connecting rod 45 that extends into the flow section 2.

[0058] Reset magnets are provided on the side of scraper 431 away from filter channel 41 and at the bottom of sliding groove 43 away from filter channel 41, and the two reset magnets attract each other.

[0059] After prolonged use, dust and impurities accumulate on the filter plate 42 due to water flow, eventually clogging it and causing water accumulation in the flow section 2 of the water tray. In severe cases, this can lead to overflow. To address this, when the water level in the flow section 2 rises, the second float 46 within it rises accordingly. This float, via the connecting rod 45, moves the drive plate 441 within the sliding groove 44, causing the guide surface to contact the side of the scraper 431 furthest from the filter channel 41. Under the influence of this guide surface, the scraper 431 moves along the water flow... The scraper 431 moves horizontally within the sliding groove 43, scraping away the dust and impurities accumulated on the side of the filter plate 42 near the flow section 2. The condensate then passes through the leak and the filter plate 42 into the connecting pipe 32. The water level in the flow section 2 then drops, and the second float 46 drops again with the water level there. The connecting rod 45 drives the drive plate 441 to fall again. At this time, under the action of the reset magnet, the scraper 431 moves back towards the bottom of the sliding groove 43, thus resetting itself within the sliding groove 43 to prepare for the next scraping.

[0060] In other embodiments, the drive assembly includes a drive cylinder installed inside the air conditioning unit. The output end of the drive cylinder reciprocates in the horizontal direction. The output end of the drive cylinder is connected to the side of the scraper 431 away from the filter channel 41. When the drive cylinder is activated, dust and impurities on the filter plate 42 can be scraped off, restoring the unobstructed flow of the filter channel 41. This design has a high degree of automation and high stability in removing dust and impurities.

[0061] As a further preferred embodiment, the filter channel 41 has a collection groove on the other side of the sliding groove 43. When the scraper 431 slides to the opening of the collection groove, dust and impurities are squeezed into the collection groove, reducing the blockage of condensate in the flow section 2.

[0062] As a further preferred embodiment, an opening is provided above the collection tank. When a certain amount of dust and impurities are collected in the collection tank, the dust and impurities can be directly removed from the opening when workers disassemble the air conditioning unit for maintenance, reducing the workload of workers collecting dust and impurities in the drip tray.

[0063] As a further preferred embodiment, the scraper 431 is provided with a scraping guide surface at one end facing the filter channel 41. The distance between the scraping guide surface and the other end of the scraper 431 gradually decreases from the side away from the filter plate 42 to the side closer to the filter plate 42. By scraping the guide surface, dust and impurities are left between the scraper 431 and the filter plate 42 and sent into the collection groove.

[0064] As a further preferred embodiment, the opening of the receiving groove is smaller than the cross-sectional area of ​​the end of the scraper 431 facing the filter channel 41. When the scraper 431 slides to the receiving groove, the inner wall of the filter channel 41 at the opening of the receiving groove limits the scraper 431, preventing the scraper 431 from sliding too far and failing to return to its original position.

[0065] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A water receiving tray, characterized in that, include: The supporting part (1) has a first inclined surface that slopes downward. The circulation section (2) is connected to the end position of the bearing section (1) along the inclined direction of the first inclined surface. The circulation section (2) forms a second inclined surface, which is inclined downward. The end position of the circulation section (2) along the inclined direction of the second inclined surface is connected to a water outlet pipe.

2. The water receiving tray according to claim 1, characterized in that, The water receiving tray also includes a water seal assembly (3), which includes a mounting base (31), a connecting pipe (32), and a sealing component. A water seal channel (35) is formed in the mounting base (31). One end of the connecting pipe (32) is connected to the water outlet pipe, and the other end is connected to the water seal channel (35). The sealing component is used to seal the water seal channel (35).

3. The water receiving tray according to claim 2, characterized in that, The sealing component includes a sealing plate (33) and a first float (34). The end of the connecting pipe (32) away from the outlet pipe extends downward. The sealing plate (33) is installed in the water seal channel (35). A sealing space (36) is formed between the downward side of the sealing plate (33) and the inner wall of the water seal channel (35). The input end of the water seal channel (35) is located in the sealing space (36). The sealing plate (33) has an upwardly extending through hole. The first float (34) is movably installed in the water seal channel (35) and located outside the sealing space (36). The first float (34) can be moved to engage with the through hole.

4. The water receiving tray according to claim 3, characterized in that, The mounting base (31) is provided with a limiting plate (37) inside the water seal channel (35) and outside the sealing space (36). The limiting plate (37) forms an active space (38) between the side wall of the connecting pipe (32) near the limiting plate (37), the outer side wall of the sealing plate (33) facing upward, and the inner side wall of the water seal channel (35). A water outlet gap is left between the limiting plate (37) and the sealing plate (33). The first float (34) is located in the active space (38).

5. The water receiving tray according to claim 3, characterized in that, The water receiving tray is provided with a filter seat (4) between the flow section (2) and the outlet pipe. The filter seat (4) is installed at the output end of the flow section (2). A filter channel (41) is formed in the filter seat (4). The filter channel (41), the outlet pipe and the connecting pipe (32) are connected one by one. The filter seat (4) is provided with a filter plate (42) in the filter channel (41).

6. The water receiving tray according to claim 5, characterized in that, The filter seat (4) has a sliding groove (43) connected to the inner wall of the filter channel (41). A scraper (431) is installed in the sliding groove (43). The filter seat (4) is provided with a driving component for driving the scraper (431) to slide in the sliding groove (43). The sliding direction of the scraper (431) is horizontal and perpendicular to the water flow direction in the filter channel (41). The scraper (431) has a leakage hole. The scraper (431) can slide until the leakage hole covers the filter plate (42).

7. The water receiving tray according to claim 6, characterized in that, The drive assembly includes a drive plate (441) and a power source. The filter seat (4) has a sliding groove (44) connected to the side of the sliding groove (43) away from the filter channel (41). The sliding groove (44) extends vertically. The drive plate (441) is installed in the sliding groove (44). The power source is used to drive the drive plate (441) to slide vertically in the sliding groove (44). The drive plate (441) has a guide surface at its upper end. The guide surface is inclined downward along the direction gradually approaching the sliding groove (43). The scraper (431) is located on the moving path of the guide surface.

8. The water receiving tray according to claim 7, characterized in that, The power source includes a second float (46), and the filter seat (4) is provided with a connecting rod (45) that can slide in the vertical direction. One end of the connecting rod (45) passes through the filter seat (4) and is connected to the drive plate (441), and the other end passes through the flow section (2) and is connected to the second float (46).

9. The water receiving tray according to claim 1, characterized in that, The height difference between the highest and lowest points of the first inclined plane is not less than 15 mm.

10. The water receiving tray according to claim 1, characterized in that, The supporting part (1) and the flow part (2) are integrally formed structures.

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