Duct unit and air conditioner

Abstract

The present invention provides an in-duct unit and an air conditioner, the in-duct unit comprising: an evaporator bracket, an evaporator, a water collection pan, a main liquid level switch, and a secondary liquid level switch. The evaporator bracket is used to support the evaporator. The main liquid level switch is disposed on the evaporator bracket to detect the liquid level in the water collection pan. The water collection pan is also provided with a fixed bracket. The secondary liquid level switch can be installed on the fixed bracket after the main liquid level switch fails, and can directly detect the liquid level in the water collection pan through the secondary liquid level switch. According to the present invention, the main liquid level switch can be easily installed after a failure, greatly reducing the difficulty of repairing the main liquid level switch after a failure. Compared with traditional water collection pans, the structural strength remains unchanged, the functions are increased, and after-sales maintenance is more convenient and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of duct units, and in particular to an in-duct unit and an air conditioner. Background Art

[0002] The liquid level switch of the existing duct unit is installed on the liquid level switch fixing bracket of the evaporator right bracket. There is a complex piping structure and drainage structure around the liquid level switch fixing bracket, and the operating space is very small. Once the duct unit has an after-sales problem of liquid level switch damage after installation, it is necessary to remove the lower cover, water tray, and evaporator right bracket, replace the new liquid level switch and re-route the wiring. The piping structure near the evaporator right bracket makes the after-sales maintenance of the hydraulic switch cumbersome and complicated, which is very difficult.

[0003] Since the existing duct unit has technical problems such as difficulty in after-sales maintenance of the liquid level switch, the present invention studies and designs an duct unit and an air conditioner. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the existing duct unit that the liquid level switch is difficult to repair after sales, thereby providing an duct unit and an air conditioner.

[0005] In order to solve the above problems, the present invention provides an air duct indoor unit, which includes:

[0006] An evaporator bracket, an evaporator, a water receiving pan, a main liquid level switch and an auxiliary liquid level switch. The evaporator bracket is used to support the evaporator. The main liquid level switch is arranged on the evaporator bracket to detect the liquid level in the water receiving pan. A fixed bracket is also provided on the water receiving pan. The auxiliary liquid level switch can be installed on the fixed bracket after the main liquid level switch fails, and the liquid level in the water receiving pan can be directly detected through the auxiliary liquid level switch.

[0007] In some embodiments, a fan is further included, the main liquid level switch is arranged on a side away from the fan relative to the fixed bracket, the fixed bracket is arranged on a side close to the fan relative to the main liquid level switch, and the height of the fixed bracket is higher than the height of the bottom of the water receiving tray.

[0008] In some embodiments, the water collection tray includes a side panel, and the duct unit also includes a fan mounting plate, one side of the fan mounting plate is used to install the fan, and the other side of the fan mounting plate is connected to or opposite to one side of the side panel, and the fixing bracket is provided on the other side of the side panel.

[0009] In some embodiments, the fixed bracket includes a bracket base and a clamping piece, one end of the bracket base is connected to the side panel, and the other end protrudes outward, the clamping piece is arranged on the bracket base and forms a clamping space between the bracket base, the auxiliary liquid level switch includes a liquid level mounting plate and a detection part, the liquid level mounting plate is located above the detection part and is spaced apart from the detection part, the detection part can detect the liquid level height in the water receiving tray, and the liquid level mounting plate can be clamped in the clamping space so that the auxiliary liquid level switch is clamped with the fixed bracket.

[0010] In some embodiments, the clamping member includes a first pressing buckle and a second pressing buckle protruding from the bracket base, the first pressing buckle and the second pressing buckle are spaced apart and arranged opposite to each other, the first pressing buckle includes a first protruding portion and a first bent portion, the lower end of the first protruding portion is in contact with the top surface of the bracket base, the upper end of the first protruding portion extends upward, one end of the first bent portion is connected to the upper end of the first protruding portion, and the other end of the first bent portion extends toward the direction of the second pressing buckle, the second pressing buckle includes a second protruding portion and a second bent portion, the lower end of the second protruding portion is in contact with the top surface of the bracket base, the upper end of the second protruding portion extends upward, one end of the second bent portion is connected to the upper end of the second protruding portion, and the other end of the second bent portion extends toward the direction of the first pressing buckle;

[0011] After the liquid level mounting plate is clamped in the clamping space, the bottom surface of the first bent portion is located above the liquid level mounting plate and is relatively matched with the top surface of the liquid level mounting plate. The side of the first protrusion facing the second buckle is the first side, and the first side can be relatively matched with the side surface of the liquid level mounting plate. The bottom surface of the second bent portion is located above the liquid level mounting plate and is relatively matched with the top surface of the liquid level mounting plate. The side of the second protrusion facing the first buckle is the second side, and the second side can be relatively matched with the side surface of the liquid level mounting plate. The first side is not parallel to the second side, and the opening formed between the first side and the second side is a flared structure toward the direction of the liquid level mounting plate.

[0012] In some embodiments, along the insertion direction of the liquid level mounting plate, the first side surface extends toward the second side surface while also extending toward the side plate, and the second side surface extends toward the first side surface while also extending toward the side plate, and the angle between the first side surface and the second side surface is (0,180°).

[0013] In some embodiments, the angle between the first side surface and the second side surface is 90°.

[0014] In some embodiments, the liquid level mounting plate includes a top surface, a third side surface, a fourth side surface, a fifth side surface, a sixth side surface and a bottom surface, and the third side surface, the fourth side surface, the fifth side surface and the sixth side surface are the circumferential surfaces of the liquid level mounting plate arranged in sequence along the circumferential direction, and the liquid level mounting plate can be clamped between the first buckle and the second buckle in the direction of the first buckle and the second buckle, and after the liquid level mounting plate is clamped between the first buckle and the second buckle, the third side surface abuts or is spaced apart from the first side surface, and the fourth side surface abuts or is spaced apart from the second side surface, and the top surface of the liquid level mounting plate is simultaneously located below the first bending portion and the second bending portion, and the top surface of the liquid level mounting plate abuts against the lower end surface of the first bending portion and the lower end surface of the second bending portion, respectively, or the top surface of the liquid level mounting plate is spaced apart from the lower end surface of the first bending portion and the lower end surface of the second bending portion, respectively.

[0015] In some embodiments, a first positioning member is provided on the liquid level mounting plate, and a second positioning member is provided on the bracket base. The first positioning member is opposite to the second positioning member so that the liquid level mounting plate and the bracket base are positioned and installed. One of the first positioning member and the second positioning member is a positioning column, and the other is a positioning hole. The positioning column and the positioning hole are plugged into each other to achieve positioning.

[0016] In some embodiments, the spacing height between the bottom surface of the first bending portion and the top surface bracket of the bracket base is greater than the thickness of the liquid level mounting plate, and the difference between the two is 0.08 to 0.1 mm; and / or, the diameter of the positioning hole is greater than the outer diameter of the positioning column, and the difference between the two is 0.05 to 0.06 mm; when the first positioning member is a positioning hole and the second positioning member is a positioning column, the top height of the positioning column is higher than the top surface of the liquid level mounting plate, and the difference between the two is 0.08 to 0.1 mm; the third side surface is spaced apart from the first side surface by a gap of 0 to 0.05 mm, and the fourth side surface is spaced apart from the second side surface by a gap of 0 to 0.05 mm.

[0017] In some embodiments, a first clip and a second clip are provided on the top surface of the liquid level mounting plate so as to protrude upward, and the first clip and the second clip are arranged at intervals. The main liquid level switch and the auxiliary liquid level switch have the same structure, and the first clip and the second clip on the main liquid level switch are used to be connected to the evaporator bracket by clipping; and / or, a first rib and a second rib are provided on the top surface of the bracket base so as to protrude upward, the first rib is located on the side of the first buckle away from the second buckle, and the second rib is located on the side of the second buckle away from the first buckle, the first rib and the second rib are respectively connected to the side plate, and the detection part includes a float.

[0018] The present invention also provides an air conditioner, which includes the aforementioned duct internal unit.

[0019] The duct unit and air conditioner provided by the present invention have the following beneficial effects:

[0020] 1. The present invention can set the main liquid level switch on the evaporator bracket through the setting of the main liquid level switch, so that the detection part (including the float) on it can be extended into the water receiving tray to effectively detect the liquid level. However, after the main liquid level switch fails, the present invention does not need to remove multiple components inside the duct unit (such as the water pump component, evaporator bracket, multiple internal unit capillaries, etc.) to repair or replace the main liquid level switch. It only needs to cut the connecting wire of the faulty main liquid level switch, and then install the auxiliary liquid level switch on the fixed bracket and connect the wires to effectively continue the liquid level detection. The difficulty of after-sales maintenance is greatly reduced. There is no need to remove multiple components such as the water pump component and evaporator bracket inside the duct unit to replace or repair the main liquid level switch. Therefore, the present invention can be conveniently installed after the main liquid level switch fails through the setting of the fixed bracket on the water receiving tray and the setting of the auxiliary liquid level switch, which greatly reduces the difficulty of repairing the main liquid level switch after the failure of the main liquid level switch. Compared with the traditional water receiving tray, the structural strength remains unchanged, the function is increased, and the after-sales maintenance is more convenient and efficient.

[0021] 2. The present invention also sets the two side surfaces of the liquid level mounting plate used to cooperate with the two snap buckle structures as a flared structure facing the direction of the liquid level mounting plate, so that the liquid level mounting plate of the auxiliary liquid level switch can be clamped towards the two snap buckles, only needs to make the liquid level mounting plate roughly horizontal, and then insert a corresponding corner into the clamping space (guide slide) formed between the snap buckle and the bracket base, and insert it with force. Compared with the existing parallel slide for installing the liquid level mounting plate, which requires fixing the bottom plate to be horizontal, and then the two side edges of the bottom plate must also be kept parallel to the guide slide and inserted with force to complete the installation, the above-mentioned structure of the present invention is more convenient and effective in installing the liquid level mounting plate, and the installation efficiency is greatly improved; the snap buckles on both sides of the present invention play a guiding role in the installation of the liquid level mounting plate, and at the same time, play a limiting role in the circumferential direction and the spatial Z direction of the installed liquid level switch; while improving the fixing effect of the liquid level mounting plate, it also effectively improves the efficiency of installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the internal structure of the air duct unit of the present invention;

[0023] Figure 2 yes Figure 1 The internal stereoscopic view of the duct unit after partial disassembly;

[0024] Figure 3 This is an exploded structural diagram of the water receiving tray, auxiliary liquid level switch and fixing bracket inside the air duct unit of the present invention before installation;

[0025] Figure 4 This is a three-dimensional structural diagram of the water receiving tray, auxiliary liquid level switch and fixing bracket inside the air duct unit of the present invention after installation;

[0026] Figure 5 This is a three-dimensional structural diagram of the water receiving tray and fixing bracket inside the air duct unit of the invention;

[0027] Figure 6 yes Figure 5 A partial enlarged view of the fixing bracket portion;

[0028] Figure 7 yes Figure 4 The three-dimensional structure diagram of the auxiliary liquid level switch;

[0029] Figure 8 yes Figure 4 A three-dimensional structural diagram of the auxiliary liquid level switch and the fixed bracket.

[0030] The accompanying drawings are:

[0031] 1. Evaporator bracket; 2. Evaporator; 3. Water collecting tray; 4. Main liquid level switch; 5. Auxiliary liquid level switch; 6. Fixed bracket; 7. Fan; 8. Side panel; 9. Fan mounting plate; 10. Bracket base; 11. Connector; 12. Liquid level mounting plate; 121. Third side surface; 122. Fourth side surface; 123. Fifth side surface; 124. Sixth side surface; 13. Detection unit; 14. First pressing buckle; 141. First protrusion; 142. First bending portion; 143. First side surface; 15. Second pressing buckle; 151. Second protrusion; 152. Second bending portion; 153. Second side surface; 16. First positioning member; 17. Second positioning member; 18. First snap buckle; 19. Second snap buckle; 20. First rib; 21. Second rib; 22. Power supply line. DETAILED DESCRIPTION

[0032] like Figure 1-8 As shown, the present invention provides an air duct indoor unit, which includes:

[0033] Evaporator bracket 1, evaporator 2, water receiving tray 3, main liquid level switch 4 and auxiliary liquid level switch 5, the evaporator bracket 1 is used to support the evaporator 2, the main liquid level switch 4 is arranged on the evaporator bracket 1 to detect the liquid level in the water receiving tray 3, and a fixed bracket 6 is also provided on the water receiving tray 3. The auxiliary liquid level switch 5 can be installed on the fixed bracket 6 after the main liquid level switch 4 fails, and the liquid level in the water receiving tray 3 can be directly detected through the auxiliary liquid level switch 5.

[0034] The present invention can set the main liquid level switch on the evaporator bracket through the setting of the main liquid level switch, so that the detection part (including the float) on it can be extended into the water receiving tray to effectively detect the liquid level. However, after the main liquid level switch fails, the present invention does not need to remove multiple components inside the duct machine (such as water pump components, evaporator bracket, multiple internal machine capillaries, etc.) to repair or replace the main liquid level switch. It only needs to cut the connecting line of the faulty main liquid level switch, and then install the auxiliary liquid level switch on the fixed bracket and connect the line to effectively continue the liquid level detection. The difficulty of after-sales maintenance is greatly reduced. There is no need to remove multiple components such as the water pump components and evaporator bracket inside the duct machine to replace or repair the main liquid level switch. Therefore, the present invention can be conveniently installed after the main liquid level switch fails through the setting of the fixed bracket on the water receiving tray and the setting of the auxiliary liquid level switch, which greatly reduces the difficulty of repairing the main liquid level switch after the failure of the main liquid level switch. Compared with the traditional water receiving tray, the structural strength remains unchanged, the function is increased, and the after-sales maintenance is more convenient and efficient.

[0035] The main liquid level switch of the present invention is installed on the evaporator bracket, that is, on the side close to the air outlet, which can facilitate the testing work after the installation is completed. The operator only needs to put his hand into the interior through the air outlet to toggle the main liquid level switch, and then he can effectively detect whether the main liquid level switch is working normally by checking whether the machine is shut down. The auxiliary liquid level switch is set inside, which is not convenient for testing after installation. If the main liquid level switch fails, it is very inconvenient to disassemble and repair it. At this time, by opening the side panel ( Figure 1 The auxiliary liquid level switch can be installed on the fixed bracket by simply using the innermost side of the bracket perpendicular to the paper. This makes it easy to quickly install the auxiliary liquid level switch after the main liquid level switch fails, quickly ensuring the normal operation of the duct unit.

[0036] The present invention provides a new water receiving tray and its water receiving tray assembly. The water receiving tray assembly includes a new water receiving tray 3 and an auxiliary liquid level switch (see Figure 1-4 Compared with the traditional water tray, the new water tray has the feature of adding a spare auxiliary liquid level switch fixing bracket 6 (see Figure 3 The new drain pan includes the traditional function of collecting refrigeration condensate. At the same time, by developing a new function of a backup fixing bracket for the liquid level switch, it achieves improvements in both functional development and simplified after-sales maintenance compared to the traditional drain pan.

[0037] In some embodiments, a fan 7 is further included. The main liquid level switch 4 is positioned on a side of the fixing bracket 6 away from the fan 7, while the fixing bracket 6 is positioned on a side closer to the fan 7 relative to the main liquid level switch 4. The height of the fixing bracket 6 is higher than the bottom of the water receiving tray 3. This is the preferred location for the fixing bracket of the present invention, namely, away from the main liquid level switch (i.e., the evaporator bracket) and closer to the fan. Since the evaporator bracket has many pipes, such as capillary tubes in the internal unit, which are difficult to remove, the fixing bracket is effectively positioned away from the evaporator bracket and closer to the fan. This allows the operator to simply remove the bottom plate of the duct internal unit and reach directly into it to effectively install the auxiliary liquid level switch on the fixing bracket, making wiring more convenient. This is a major innovation of the present invention, as it effectively exploits and utilizes this space. This allows for quick installation of the auxiliary liquid level switch in the event of a malfunction of the main liquid level switch, ensuring that the duct internal unit can continue to detect the liquid level, allowing for quick and effective continued operation and improving operational continuity.

[0038] In some embodiments, the water receiving tray 3 includes a side panel 8, and the duct unit further includes a fan mounting plate 9. One side of the fan mounting plate 9 is used to mount the fan 7, and the other side of the fan mounting plate 9 is connected to or opposite to one side of the side panel 8. The other side of the side panel 8 is provided with the fixing bracket 6. This is a further preferred setting position and setting method of the fixing bracket of the present invention, that is, the fixing bracket is provided on the side panel of the water receiving tray of the fan mounting plate, and can be provided at the end away from the evaporation bracket, that is, the end close to the fan, so that the operator can conveniently install the auxiliary liquid level switch on the water receiving tray without removing multiple pipelines, water pumps, evaporator brackets, etc., and facilitate the quick and effective installation of the auxiliary liquid level switch when the main liquid level switch fails, ensuring that the duct unit can continuously detect the liquid level and ensure its continuous and effective operation.

[0039] In some embodiments, the fixed bracket 6 includes a bracket base 10 and a clamping member 11, one end of the bracket base 10 is connected to the side panel 8, and the other end protrudes outward, the clamping member 11 is arranged on the bracket base 10 and forms a clamping space between the bracket base 10, the auxiliary liquid level switch 5 includes a liquid level mounting plate 12 and a detection part 13, the liquid level mounting plate 12 is located above the detection part 13 and is spaced apart from the detection part 13, the detection part 13 can detect the liquid level height in the water receiving tray 3, and the liquid level mounting plate 12 can be clamped in the clamping space so that the auxiliary liquid level switch 5 is clamped with the fixed bracket 6. This is the preferred structural form of the fixed bracket of the present invention. The bracket base can support the clamping member and the auxiliary liquid level switch. The auxiliary liquid level switch includes a liquid level mounting plate. The liquid level mounting plate can be connected with the clamping member to form a clamping connection, so that the auxiliary liquid level switch can be fixed effectively and quickly, and is convenient to disassemble. A detection part (including a float) is provided below the liquid level mounting plate, which can detect the height of the liquid level, thereby realizing the function of quickly installing and fixing the auxiliary liquid level switch, and the auxiliary liquid level switch can play the same role and effect of detecting the liquid level as the main liquid level switch.

[0040] In some embodiments, the clamping member 11 includes a first pressing buckle 14 and a second pressing buckle 15 protruding from the bracket base 10, the first pressing buckle 14 and the second pressing buckle 15 are spaced apart and arranged opposite to each other, the first pressing buckle 14 includes a first protruding portion 141 and a first bent portion 142, the lower end of the first protruding portion 141 is connected to the top surface of the bracket base 10, the upper end of the first protruding portion 141 extends upward, one end of the first bent portion 142 is connected to the upper end of the first protruding portion 141, and the other end of the first bent portion 142 extends toward the direction of the second pressing buckle 15, the second pressing buckle 15 includes a second protruding portion 151 and a second bent portion 152, the lower end of the second protruding portion 151 is connected to the top surface of the bracket base 10, the upper end of the second protruding portion 151 extends upward, one end of the second bent portion 152 is connected to the upper end of the second protruding portion 151, and the other end of the second bent portion 152 extends toward the direction of the first pressing buckle 14;

[0041] After the liquid level mounting plate 12 is clamped in the clamping space, the bottom surface of the first bent portion 142 is located above the liquid level mounting plate 12 and is matched with the top surface of the liquid level mounting plate 12. The side of the first protrusion 141 facing the second buckle 15 is the first side surface 143. The first side surface 143 can be matched with the side surface of the liquid level mounting plate 12. The bottom surface of the second bent portion 152 is located above the liquid level mounting plate 12 and is matched with the top surface of the liquid level mounting plate 12. The side of the second protrusion 151 facing the first buckle 14 is the second side 153, and the second side 153 can cooperate with the side of the liquid level mounting plate 12, and the first side 143 and the second side 153 are not parallel, and the opening formed between the first side 143 and the second side 153 is a flared structure toward the liquid level mounting plate 12 (the flared structure is a trumpet-shaped opening with a gradually increasing cross-sectional area toward the direction of the liquid level mounting plate before it is installed between the two buckles).

[0042] This is a further preferred structural form of the clamping member of the present invention, by arranging two spaced and opposite buckle structures, the two buckle structures respectively include a protrusion connected to the bracket base, and a bent portion connected to the top of the protrusion (the two protrusions are preferably extended in the vertical direction, the two bent portions are preferably extended in the horizontal direction, and the bent portions are preferably bent at a 90° angle to the protrusions), so that the liquid level mounting plate can be clamped in the clamping space between the bent portions and the protrusions of the two buckles, and by setting the two side surfaces of the two buckle structures for cooperating with the liquid level mounting plate as flared structures facing the direction of the liquid level mounting plate, the liquid level mounting plate of the auxiliary liquid level switch can be clamped toward the two buckles in the process of being clamped. After the mounting plate is roughly horizontal, insert a corresponding corner into the clamping space (guide slide) formed between the buckle and the bracket base, and insert it with force. Compared with the existing parallel slide for installing the liquid level mounting plate, which requires fixing the bottom plate to be horizontal, and then the two side edges of the bottom plate must also be kept parallel to the guide slide and inserted with force to complete the installation, the above-mentioned structure of the present invention is more convenient and effective in installing the liquid level mounting plate, and the installation efficiency is greatly improved; the buckles on both sides of the present invention play a guiding role in the installation of the liquid level mounting plate, and at the same time, play a limiting role in the circumferential direction and the spatial Z direction of the installed liquid level switch; while improving the fixing effect of the liquid level mounting plate, it also effectively improves the efficiency of installation and disassembly.

[0043] The water tray liquid level switch fixing bracket of the present invention is attached to the inner wall of the water tray, and mainly plays the role of positioning and supporting the auxiliary liquid level switch. The fixing bracket 6 of the water tray is composed of a bracket base 10, a positioning column and a buckle (see Figure 6 To ensure the strength of the liquid level switch mounting bracket, ribs are added to both sides of the bracket base. The entire structure of the new water tray is constructed from injection molded parts. The bracket base 10 of the mounting bracket 6 supports the liquid level switch; the positioning column positions the liquid level switch in the X and Y directions; and the mounting bracket buckle positions the liquid level switch in the Z and circumferential directions. The combined effect of these structures achieves support and axial positioning of the liquid level switch.

[0044] The fixing bracket 6 of the water receiving tray of the present invention is located on the left side of the water receiving tray 3 to facilitate the installation and wiring of the auxiliary liquid level switch 5.

[0045] In some embodiments, along the insertion direction of the liquid level mounting plate 12, the first side surface 143 extends toward the second side surface 153 while also extending toward the side panel 8, and the second side surface 153 extends toward the first side surface 143 while also extending toward the side panel 8, and the angle between the first side surface 143 and the second side surface 153 is (0,180°). This is a further preferred setting form of the first side of the first buckle that cooperates with the side of the liquid level mounting plate and the second side of the second buckle of the present invention, that is, the two side surfaces extend from the end away from the side plate 8 toward the end close to the side plate to form an opening with a gradually narrowing opening, that is, a flaring structure is formed in the direction away from the side plate, so that the liquid level mounting plate is gradually guided and limited by the two side surfaces and the two bent portions during the movement toward the side plate, and compared with the structure in which the two side surfaces are relative and parallel, the position for the liquid level mounting plate to be clamped is large, and the liquid level mounting plate can be clamped in a larger space range, without the need to adjust the position of the liquid level mounting plate to a specific angle and position when in a parallel slide groove before it can be clamped, thereby effectively improving the installation efficiency of the auxiliary liquid level switch.

[0046] In some embodiments, the angle between the first side surface 143 and the second side surface 153 is 90°, which is a preferred angle between the two side surfaces of the present invention, and preferably, the two side surfaces form a perpendicular angle.

[0047] In some embodiments, the liquid level mounting plate 12 includes a top surface, a third side surface 121, a fourth side surface 122, a fifth side surface 123, a sixth side surface 124 and a bottom surface, wherein the third side surface 121, the fourth side surface 122, the fifth side surface 123 and the sixth side surface 124 are the circumferential surfaces of the liquid level mounting plate 12 arranged in sequence along the circumferential direction, and the liquid level mounting plate 12 can be inserted between the first pressing buckle 14 and the second pressing buckle 15 in the direction of the first pressing buckle 14 and the second pressing buckle 15, and after the liquid level mounting plate 12 is inserted between the first pressing buckle 14 and the second pressing buckle 15 The third side surface 121 is in contact with or spaced apart from the first side surface 143, the fourth side surface 122 is in contact with or spaced apart from the second side surface 153, the top surface of the liquid level mounting plate 12 is simultaneously (respectively) located below the first bending portion 142 and the second bending portion 152, the top surface of the liquid level mounting plate 12 is in contact with the lower end surface of the first bending portion 142 and the lower end surface of the second bending portion 152, respectively, or the top surface of the liquid level mounting plate 12 is spaced apart from the lower end surface of the first bending portion 142 and the lower end surface of the second bending portion 152, respectively.

[0048] This is the preferred structural form of the liquid level mounting plate of the present invention, that is, it is a roughly rectangular plate structure, the third, fourth, fifth and sixth side surfaces can be connected in sequence, or an arc chamfer can be set between two adjacent side surfaces, such as Figure 7-8 As shown, the third side surface is arranged relative to the first side surface of the first pressure buckle, and the two can abut or be separated by a certain gap. The fourth side surface is arranged relative to the second side surface of the second pressure buckle, and the two can abut or be separated by a certain gap. The first and second side surfaces can guide and limit the forward direction of the third and fourth side surfaces, and the vertical direction of the liquid level mounting plate can be limited by the lower end surfaces of the two bent portions and the bracket base, thereby completing the function of fixing the liquid level mounting plate, forming a flared structure in the direction away from the side plate, so that the liquid level mounting plate is gradually limited by the two side surfaces and the two bent portions during the movement toward the side plate, and compared with the structure in which the two side surfaces are relative and parallel, the position for the liquid level mounting plate to be clamped is large, and the liquid level mounting plate can be clamped within a larger space range, without the need to adjust the position of the liquid level mounting plate to a specific angle and position when in a parallel slide groove before it can be clamped, effectively improving the installation efficiency of the auxiliary liquid level switch.

[0049] In some embodiments, a first positioning member 16 is provided on the liquid level mounting plate 12, and a second positioning member 17 is provided on the bracket base 10. The first positioning member 16 and the second positioning member 17 are relative to each other so that the liquid level mounting plate 12 and the bracket base 10 are positioned and installed. One of the first positioning member 16 and the second positioning member 17 is a positioning column, and the other is a positioning hole. The positioning column and the positioning hole are plugged together to achieve positioning. The present invention can effectively achieve the installation of the liquid level mounting plate to a preset position on the bracket base by relative installation of the first positioning member on the liquid level mounting plate and the second positioning member on the bracket base to meet detection requirements, etc. The two are preferably a plug-in structure of the positioning column and the positioning hole, which can form a snap connection between the two and effectively limit the movement direction of the auxiliary liquid level switch.

[0050] In some embodiments, the spacing height between the bottom surface of the first bending portion 142 and the top surface bracket of the bracket base 10 is greater than the thickness of the liquid level mounting plate 12, and the difference between the two is 0.08 to 0.1 mm; and / or, the diameter of the positioning hole is greater than the outer diameter of the positioning column, and the difference between the two is 0.05 to 0.06 mm; and / or, when the first positioning member 16 is a positioning hole and the second positioning member 17 is a positioning column, the top height of the positioning column is higher than the top surface of the liquid level mounting plate 12, and the difference between the two is 0.08 to 0.1 mm; and / or, the third side surface 121 and the first side surface 143 are separated by a gap of 0 to 0.05 mm, and the fourth side surface 122 and the second side surface 153 are separated by a gap of 0 to 0.05 mm.

[0051] This is the relationship between the first bending portion, the bracket base and the liquid level mounting plate of the present invention. The spacing height between the bottom surface of the first bending portion 142 and the top surface bracket of the bracket base 10 is greater than the thickness of the liquid level mounting plate 12, and the difference between the two is 0.08~0.1mm, which can effectively ensure that there is enough space to accommodate the insertion of the liquid level mounting plate; the diameter of the positioning hole is greater than the outer diameter of the positioning column, and the difference between the two is 0.05~0.06mm, which can effectively accommodate the positioning column to be inserted into the positioning hole; the third side surface 121 and the first side surface 143 are spaced apart by a gap of 0~0.05mm, and the fourth side surface 122 and the second side surface 153 are spaced apart by a gap of 0~0.05mm, which can ensure that the liquid level mounting plate has an effective movement space, and ensure that the liquid level mounting plate moves to the designated position where the positioning column and the positioning hole are plugged in and matched.

[0052] Structural Fixing Method and Data: The liquid level switch (excluding the float) and the fixing bracket are both made of ABS-121H material. The lower surface of the fixing bracket is horizontal, with the upper and lower surfaces of the two snaps parallel to the upper surface of the bracket base, and the two side surfaces forming a 90-degree angle with each other. Furthermore, to facilitate installation and meet machining accuracy, the height of the lower surface of the fixing bracket snap from the bracket base surface must be 0.08 to 0.1 mm greater than the thickness of the liquid level switch fixing plate. The diameter of the liquid level switch fixing hole must be 0.05 to 0.06 mm greater than the diameter of the liquid level switch fixing bracket positioning column. The fixing bracket positioning column must be 0.08 to 0.1 mm higher than the liquid level switch fixing plate to ensure stability after fixing. After assembly, a single-sided gap of 0 to 0.05 mm is allowed between the side of the liquid level switch and the side of the fixing bracket snap.

[0053] The fixing bracket 6 of the present invention is not limited to being made of plastic, and can also be made of sheet metal, and the fixing bracket is embedded in the inner wall of the water receiving tray body through mold processing.

[0054] In some embodiments, a first clip 18 and a second clip 19 are provided on the top surface of the liquid level mounting plate 12 so as to protrude upward, and the first clip 18 and the second clip 19 are arranged at intervals. The main liquid level switch 4 and the auxiliary liquid level switch 5 have the same structure, and the first clip 18 and the second clip 19 on the main liquid level switch 4 are used to be snap-connected with the evaporator bracket 1; and / or, a first rib 20 and a second rib 21 are provided on the top surface of the bracket base 10 so as to protrude upward, the first rib 20 is located on the side of the first pressure buckle 14 away from the second pressure buckle 15, and the second rib 21 is located on the side of the second pressure buckle 15 away from the first pressure buckle 14, the first rib 20 and the second rib 21 are respectively connected to the side panel 8, and the detection part 13 includes a float.

[0055] The present invention uses the structural arrangement of the first clip and the second clip to provide a structure for fixing the main liquid level switch to the evaporator bracket; the arrangement of the first and second ribs can firmly fix the bracket base to the side panel, thereby forming a structural reinforcement effect.

[0056] Installation steps: When installing the liquid level switch, place the side of the liquid level switch with the float (detection part 13) downward and the side with the power supply line 22 upward. Keep the liquid level switch vertical as a whole, and keep the lower surface of the liquid level mounting plate 12 and the upper surface of the bracket base 10 aligned. Insert the corner of the liquid level switch with the positioning hole into the fixed bracket 6 until the positioning column is inserted into the positioning hole to complete the installation. The state after installation is as follows: Figure 8 After installation, the positioning posts of the fixed bracket mate with the positioning holes of the liquid level switch, achieving horizontal positioning of the liquid level switch. The third side 121 and fourth side 122 of the liquid level mounting plate mate with the first side 143 and second side 153 of the two snaps, respectively, achieving circumferential positioning of the liquid level switch. The upper surface of the bracket base 10 mates with the lower surface of the liquid level mounting plate 12, and the lower surface of the snaps mates with the upper surface of the liquid level mounting plate. These two points mate to achieve vertical positioning of the liquid level switch. Only after the liquid level switch is installed can the wiring be continued to complete the installation.

[0057] The present invention also provides an air conditioner (preferably a duct air conditioner), which includes the aforementioned duct in-unit.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A duct unit, characterized in that: include: An evaporator bracket (1), an evaporator (2), a water receiving tray (3), a main liquid level switch (4) and an auxiliary liquid level switch (5), wherein the evaporator bracket (1) is used to support the evaporator (2), the main liquid level switch (4) is arranged on the evaporator bracket (1) so as to detect the liquid level in the water receiving tray (3), the water receiving tray (3) is further provided with a fixed bracket (6), the auxiliary liquid level switch (5) can be installed on the fixed bracket (6) after the main liquid level switch (4) fails, and can directly detect the liquid level in the water receiving tray (3) through the auxiliary liquid level switch (5); It also includes a fan (7), the main liquid level switch (4) is arranged on a side away from the fan (7) relative to the fixed bracket (6), the fixed bracket (6) is arranged on a side close to the fan (7) relative to the main liquid level switch (4), and the height of the fixed bracket (6) is higher than the height of the bottom of the water receiving tray (3); The water receiving tray (3) includes a side plate (8), and the air duct internal unit also includes a fan mounting plate (9), one side of the fan mounting plate (9) is used to mount the fan (7), and the other side of the fan mounting plate (9) is connected to or opposite to one side of the side plate (8), and the fixing bracket (6) is provided on the other side of the side plate (8); The fixed bracket (6) includes a bracket base (10) and a clamping member (11), one end of the bracket base (10) is connected to the side plate (8), and the other end protrudes outward, the clamping member (11) is arranged on the bracket base (10) and forms a clamping space with the bracket base (10), the auxiliary liquid level switch (5) includes a liquid level mounting plate (12) and a detection part (13), the liquid level mounting plate (12) is located above the detection part (13) and is spaced apart from the detection part (13), the detection part (13) can detect the liquid level height in the water receiving tray (3), and the liquid level mounting plate (12) can be clamped in the clamping space so that the auxiliary liquid level switch (5) and the fixed bracket (6) are clamped. The clamping member (11) includes a first pressing buckle (14) and a second pressing buckle (15) protruding from the bracket base (10), the first pressing buckle (14) and the second pressing buckle (15) are spaced apart and arranged opposite to each other, the first pressing buckle (14) includes a first protruding portion (141) and a first bending portion (142), the lower end of the first protruding portion (141) is connected to the top surface of the bracket base (10), the upper end of the first protruding portion (141) extends upward, and one end of the first bending portion (142) is connected to the upper surface of the first protruding portion (141). The first bending portion (142) is connected to the second end thereof, the other end of the first bending portion (142) extends toward the direction of the second pressing buckle (15), the second pressing buckle (15) comprises a second protruding portion (151) and a second bending portion (152), the lower end of the second protruding portion (151) is connected to the top surface of the bracket base (10), the upper end of the second protruding portion (151) extends upward, one end of the second bending portion (152) is connected to the upper end of the second protruding portion (151), and the other end of the second bending portion (152) extends toward the direction of the first pressing buckle (14).

2. The duct unit according to claim 1, characterized in that: After the liquid level mounting plate (12) is clamped in the clamping space, the bottom surface of the first bent portion (142) is located above the liquid level mounting plate (12) and is matched with the top surface of the liquid level mounting plate (12). The side of the first protrusion (141) facing the second buckle (15) is the first side surface (143). The first side surface (143) can be matched with the side surface of the liquid level mounting plate (12). The bottom surface of the second bent portion (152) is located above the liquid level mounting plate (12). The second protrusion (151) is above the liquid level mounting plate (12) and is matched with the top surface of the liquid level mounting plate (12); the side of the second protrusion (151) facing the first buckle (14) is the second side (153); the second side (153) can be matched with the side of the liquid level mounting plate (12); the first side (143) and the second side (153) are not parallel; and the opening formed between the first side (143) and the second side (153) is a flared structure facing the liquid level mounting plate (12).

3. The duct unit according to claim 2, characterized in that: Along the insertion direction of the liquid level mounting plate (12), the first side surface (143) extends in a direction close to the second side surface (153) and also extends in a direction close to the side plate (8), and the second side surface (153) extends in a direction close to the first side surface (143) and also extends in a direction close to the side plate (8), and the angle between the first side surface (143) and the second side surface (153) is (0,180°).

4. The duct unit according to claim 3, characterized in that: The included angle between the first side surface (143) and the second side surface (153) is 90°.

5. The duct unit according to claim 2, characterized in that: The liquid level mounting plate (12) comprises a top surface, a third side surface (121), a fourth side surface (122), a fifth side surface (123), a sixth side surface (124) and a bottom surface, wherein the third side surface (121), the fourth side surface (122), the fifth side surface (123) and the sixth side surface (124) are circumferential surfaces of the liquid level mounting plate (12) arranged in sequence along the circumferential direction, and the liquid level mounting plate (12) can be clamped between the first pressing buckle (14) and the second pressing buckle (15) in the direction of the first pressing buckle (14) and the second pressing buckle (15), and the first pressing buckle (14) and the second pressing buckle (15) are clamped on the liquid level mounting plate (12). After that, the third side surface (121) abuts against or is spaced apart from the first side surface (143), the fourth side surface (122) abuts against or is spaced apart from the second side surface (153), the top surface of the liquid level mounting plate (12) is respectively located below the first bending portion (142) and the second bending portion (152), the top surface of the liquid level mounting plate (12) abuts against the lower end surface of the first bending portion (142) and the lower end surface of the second bending portion (152), or the top surface of the liquid level mounting plate (12) is spaced apart from the lower end surface of the first bending portion (142) and the lower end surface of the second bending portion (152).

6. The duct unit according to claim 5, characterized in that: A first positioning member (16) is provided on the liquid level mounting plate (12), and a second positioning member (17) is provided on the bracket base (10). The first positioning member (16) and the second positioning member (17) are opposite to each other so that the liquid level mounting plate (12) and the bracket base (10) are positioned and mounted. One of the first positioning member (16) and the second positioning member (17) is a positioning column, and the other is a positioning hole. The positioning column and the positioning hole are plugged into each other to achieve positioning.

7. The duct unit according to claim 6, characterized in that: The height of the gap between the bottom surface of the first bending portion (142) and the top surface bracket of the bracket base (10) is greater than the thickness of the liquid level mounting plate (12), and the difference between the two is 0.08~0.1mm; and / or, the diameter of the positioning hole is greater than the outer diameter of the positioning column, and the difference between the two is 0.05~0.06mm; and / or, when the first positioning member (16) is a positioning hole and the second positioning member (17) is a positioning column, the top height of the positioning column is higher than the top surface of the liquid level mounting plate (12), and the difference between the two is 0.08~0.1mm; and / or, the third side surface (121) and the first side surface (143) are separated by a gap of 0~0.05mm, and the fourth side surface (122) and the second side surface (153) are separated by a gap of 0~0.05mm.

8. The duct unit according to any one of claims 1 to 7, characterized in that: A first clip (18) and a second clip (19) are provided on the top surface of the liquid level mounting plate (12) in a manner protruding upward, and the first clip (18) and the second clip (19) are arranged at intervals. The main liquid level switch (4) and the auxiliary liquid level switch (5) have the same structure, and the first clip (18) and the second clip (19) on the main liquid level switch (4) are used for being connected to the evaporator bracket (1); and / or a first rib (20) and a second rib (21) are provided on the top surface of the bracket base (10) in a manner protruding upward, the first rib (20) being located on a side of the first pressing buckle (14) away from the second pressing buckle (15), and the second rib (21) being located on a side of the second pressing buckle (15) away from the first pressing buckle (14), the first rib (20) and the second rib (21) being connected to the side plate (8) respectively, and the detection portion (13) includes a float.

9. An air conditioner, characterized in that: The invention comprises the duct internal unit according to any one of claims 1 to 8.

Images