Humidifying device and air conditioner using same

Abstract

The utility model discloses a kind of humidifying device and air conditioner applied to it, air conditioner includes evaporimeter, humidifying device includes drive assembly, first transmission component, second transmission component, wet film component and sink, first transmission component and second transmission component are respectively arranged in the two ends close to evaporimeter, wet film component is connected with first transmission component and second transmission component respectively and located in the air outlet side of evaporimeter, drive assembly is used to drive first transmission component to drive wet film component to move towards first direction, or drive second transmission component to drive wet film component to move towards second direction, at least one of first transmission component and second transmission component is arranged in sink, the water absorption of wet film component along first direction gradually increases or reduces.The utility model has wet film component and supporting transmission component and sink with water absorption gradient configuration along moving direction by reciprocating movement along air outlet side, in this way, energy-saving, integrated humidification control is realized, without increasing external device.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a humidification device and an air conditioner using the same. Background Technology

[0002] Current household air conditioners mostly rely on independent spray or atomizing devices or external fresh air humidification units for humidification. This increases equipment purchase and installation costs, and the continuous operation of the atomizer and the additional motor load from the external device are not energy-efficient. Furthermore, existing technologies (such as solutions that only focus on water level control) do not provide an integrated humidification structure and control path that integrates with the indoor heat exchange and air supply processes. Currently, it is difficult to achieve low-power, adjustable-volume integrated humidification using the condensate generated by the air conditioner itself on the evaporator outlet side without adding external devices and additional motor load. Utility Model Content

[0003] The purpose of this invention is to provide a humidification device and an air conditioner using the same, aiming to solve the problem that existing humidification devices cannot perform energy-saving humidification without adding external devices.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved through the following technical solution: A humidification device is provided for use in an air conditioner. The air conditioner includes an evaporator, and the humidification device includes a drive assembly, a first transmission assembly, a second transmission assembly, a wet film assembly, and a water tank. The first transmission assembly and the second transmission assembly are respectively disposed at both ends near the evaporator. The wet film assembly is connected to the first transmission assembly and the second transmission assembly and is located on the air outlet side of the evaporator. The drive assembly is used to drive the first transmission assembly to move the wet film assembly in a first direction, or to drive the second transmission assembly to move the wet film assembly in a second direction opposite to the first direction. At least one of the first transmission assembly and the second transmission assembly is disposed in the water tank. The water absorption of the wet film assembly gradually increases or decreases along the first direction.

[0005] Furthermore, the water tank includes a first water tank disposed at one end of the evaporator, the first transmission component includes a first reel, the drive component includes a first drive member connected to the first reel, the first reel is disposed in the first water tank, the first water tank is used to collect condensate generated by the evaporator, one end of the wet film component is wound and connected to the first reel, and the first drive member can drive the first reel to rotate, so as to drive the wet film component to move in the first direction.

[0006] Furthermore, the water tank includes a second water tank disposed at the other end of the evaporator, the second transmission assembly includes a second reel, the drive assembly includes a second drive member connected to the second reel, the other end of the wet film assembly is wound and connected to the second reel, and the second drive member can drive the second reel to rotate so as to drive the wet film assembly to move in the second direction.

[0007] Furthermore, the first water tank and the second water tank are located at the bottom and top of the evaporator, respectively. The humidification device also includes a water pump and a water outlet pipe. The water pump is used to extract the condensate collected in the first water tank. One end of the water outlet pipe is connected to the water pump, and the other end is connected to the second water tank.

[0008] Furthermore, the humidification device also includes at least two fixed shafts, which are spaced apart between the first transmission assembly and the second transmission assembly.

[0009] Furthermore, the wet membrane assembly includes a hydrophilic membrane and a non-hydrophilic membrane, wherein the hydrophilic membrane is connected to the non-hydrophilic membrane and the connection point is arranged diagonally.

[0010] Furthermore, the wet membrane assembly includes at least three segments arranged sequentially along the first direction or the second direction: a first segment, a second segment, and a third segment, wherein the first segment is a hydrophilic membrane segment, the third segment is a non-hydrophilic membrane segment, and the second segment is a mixed segment of hydrophilic and non-hydrophilic membranes; in the second segment, the hydrophilic membrane and the non-hydrophilic membrane are connected and the connection is arranged diagonally.

[0011] Furthermore, in the first direction, the length of any one of the first, second, and third segments is greater than the length of the evaporator.

[0012] Furthermore, the hydrophilic membrane has a porous mesh structure.

[0013] This utility model also provides an air conditioner, including an evaporator, a fan, and a humidification device as described above. The fan is disposed on the air inlet side of the evaporator, and the wet film assembly of the humidification device is disposed on the air outlet side of the evaporator.

[0014] This invention provides a humidification device applied to an air conditioner. The air conditioner includes an evaporator, and the humidification device includes a drive assembly, a first transmission assembly, a second transmission assembly, a wet film assembly, and a water tank. The first and second transmission assemblies are respectively disposed near both ends of the evaporator. The wet film assembly is connected to both the first and second transmission assemblies and is located on the air outlet side of the evaporator. The drive assembly drives the first transmission assembly to move the wet film assembly in a first direction, or drives the second transmission assembly to move the wet film assembly in a second direction opposite to the first direction. At least one of the first and second transmission assemblies is disposed in the water tank. The water absorption of the wet film assembly gradually increases or decreases along the first direction. This invention achieves energy-saving and integrated humidification control by using a wet film assembly that can reciprocate along the air outlet side and has a water absorption gradient along the movement direction, along with a matching transmission assembly and a water tank, thus eliminating the need for external devices. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a humidification device provided in an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of part A' in the middle; Figure 3 This is a schematic diagram of the structure of the wet film assembly provided in an embodiment of the present invention; Figure 4 A flowchart illustrating the operation of the humidification device provided in this embodiment of the utility model; Figure 5 A schematic block diagram of the humidification device control system provided in the embodiment of this utility model.

[0017] Explanation of the markings in the image: 100. Evaporator; 200. Fan; 10. Drive component; 11. First drive element; 12. Second drive element; 20. First transmission assembly; 21. First reel; 30. Second transmission assembly; 31. Second reel; 40. Wet membrane assembly; 41. Hydrophilic membrane; 42. Non-hydrophilic membrane; 50. Water tank; 51. First water tank; 52. Second water tank; 60. Water pump; 70. Water outlet pipe; 80. Fixed shaft. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0020] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0021] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0022] Combination Figure 1 As shown, this utility model embodiment provides a humidification device applied to an air conditioner. The air conditioner includes an evaporator 100, and the humidification device includes a drive assembly 10, a first transmission assembly 20, a second transmission assembly 30, a wet film assembly 40, and a water tank 50. The first transmission assembly 20 and the second transmission assembly 30 are respectively disposed at both ends near the evaporator 100. The wet film assembly 40 is connected to the first transmission assembly 20 and the second transmission assembly 30 and is located on the air outlet side of the evaporator 100. The drive assembly 10 is used to drive the first transmission assembly 20 to move the wet film assembly 40 in a first direction, or to drive the second transmission assembly 30 to move the wet film assembly 40 in a second direction opposite to the first direction. At least one of the first transmission assembly 20 and the second transmission assembly 30 is disposed in the water tank 50. The water absorption of the wet film assembly 40 gradually increases or decreases along the first direction.

[0023] In this embodiment, the humidification device can be installed inside the indoor unit casing of the air conditioner, arranged around the evaporator 100. The first transmission assembly 20 and the second transmission assembly 30 are respectively fixed near both ends of the evaporator 100, and the wet film assembly 40 is disposed across the air outlet side of the evaporator 100, with the unfolded surface of the wet film assembly 40 facing the air outlet channel. For ease of description, the direction from the second transmission assembly 30 to the first transmission assembly 20 is defined as the first direction, and the opposite direction is defined as the second direction.

[0024] Furthermore, the drive assembly 10 is connected to the first transmission assembly 20 and / or the second transmission assembly 30. The drive assembly 10 is preferably a reversible motor-reduction transmission unit, used to selectively drive the first transmission assembly 20 or the second transmission assembly 30 to rotate. The two ends of the wet film assembly 40 are respectively wound around the first transmission assembly 20 and the second transmission assembly 30. When the drive assembly 10 drives the first transmission assembly 20 to rotate, the wet film assembly 40 moves along a first direction; when the drive assembly 10 drives the second transmission assembly 30 to rotate, the wet film assembly 40 moves along a second direction, thereby realizing the reciprocating movement of the wet film assembly 40 on the air outlet side of the evaporator 100. The water tank 50 can be arranged along the width direction of the evaporator 100 to collect the condensate generated and falling during the operation of the evaporator 100, serving as the water source for the wet film assembly 40. At least one of the first transmission assembly 20 and the second transmission assembly 30 is disposed in the water tank 50, such that the end of the wet film assembly 40 connected to the transmission assembly forms an immersion section when it moves into the water tank 50 area, allowing it to directly contact the condensate in the water tank 50 to obtain moisture. Driven, the wet film assembly 40 expands from the immersion section towards the air outlet side of the evaporator 100, completing the water intake and humidification cycle. To avoid interference, an installation gap is maintained between the wet film assembly 40 and the fins of the evaporator 100, and the movement trajectory and tension state of the wet film assembly 40 can be limited by a guide structure within the housing. The wet film assembly 40 can be configured with a water absorption performance gradient along a first direction, meaning that the water absorption of the wet film assembly 40 gradually increases or decreases from the end closer to the first transmission assembly 20 towards the end closer to the second transmission assembly 30. This gradient can be achieved by continuously or segmentally varying the material ratio, porosity, surface hydrophilic treatment depth, or fiber density of the wet film assembly 40 along the first direction. Therefore, when the wet film assembly 40 moves back and forth along the first and second directions, the effective air receiving area on the air outlet side of the evaporator 100 will have different moisture content distributions, which makes it easy to achieve continuous adjustment of the humidification amount by moving the position without replacing the components.

[0025] During assembly and use, the wet film assembly 40 can be kept taut by the first transmission assembly 20 and the second transmission assembly 30. Under the action of control commands, the drive assembly 10 selectively drives the first transmission assembly 20 or the second transmission assembly 30, causing the wet film assembly 40 to reciprocate between two extreme end positions, realizing a cycle of water intake-spreading-air intake-water intake. The water tank 50 continuously receives condensate from the evaporator 100 to ensure that the wet film assembly 40 obtains a stable water source and completes the above-mentioned cycle during the movement cycle.

[0026] Combination Figure 2 As shown, in one embodiment, the water tank 50 includes a first water tank 51 disposed at one end of the evaporator 100, the first transmission assembly 20 includes a first reel 21, and the drive assembly 10 includes a first drive member 11 connected to the first reel 21. The first reel 21 is disposed in the first water tank 51, and the first water tank 51 is used to collect condensate generated by the evaporator 100. One end of the wet film assembly 40 is wound and connected to the first reel 21. The first drive member 11 can drive the first reel 21 to rotate, so as to drive the wet film assembly 40 to move in the first direction.

[0027] In this embodiment, the first water tank 51 is disposed along the width direction of the evaporator 100 at one end near its lower edge, with its opening facing the air outlet side of the evaporator 100. It is used to collect the condensate that condenses on the fin surface of the evaporator 100 during operation and falls naturally along the direction of gravity, thereby passively collecting the condensate into the first water tank 51 by gravity. The first transmission assembly 20 includes a first spool 21 disposed inside the first water tank 51 and whose axis is parallel to the width direction of the evaporator 100. The two ends of the first spool 21 are rotatably supported on the opposite sidewalls of the first water tank 51 by bearing seats. One end of the wet film assembly 40 is fixedly connected to the first roll 21 in a winding manner. The winding direction is preferably consistent with the unfolding direction of the wet film assembly 40 to provide stable traction and tension during driving. The drive assembly 10 includes a first drive member 11 that is drively connected to the first roll 21. The first drive member 11 is preferably a stepper motor. The stepper motor can be connected to the first roll 21 through a sealed coupling or magnetic coupling. When the first drive member 11 drives the first roll 21 to rotate under control, it drives the wet film assembly 40 that is wound around it to move in a first direction from the second drive assembly 30 to the first drive assembly 20.

[0028] In one embodiment, the water tank 50 includes a second water tank 52 disposed at the other end of the evaporator 100, the second transmission assembly 30 includes a second spool 31, the drive assembly 10 includes a second drive member 12 connected to the second spool 31, the other end of the wet film assembly 40 is wound and connected to the second spool 31, and the second drive member 12 can drive the second spool 31 to rotate so as to drive the wet film assembly 40 to move in the second direction.

[0029] In this embodiment, the water tank 50 includes a second water tank 52 disposed at the other end of the evaporator 100, preferably at its upper edge; the second transmission assembly 30 includes a second reel 31 disposed inside the second water tank 52, the axis of the second reel 31 extending along the width direction of the evaporator 100, and its two ends being rotatably supported on the opposite sidewalls of the second water tank 52 by bearing seats, so that the outer circle of the second reel 31 forms a controllable wetting contact with the water in the second water tank 52 in the working state. The drive assembly 10 includes a second drive member 12 that is drively connected to the second reel 31, the second drive member 12 being preferably a stepper motor, and is connected to the second reel 31 by a sealed coupling or magnetic coupling to ensure the sealing and waterproofing of the second water tank 52. The other end of the wet film assembly 40 is fixedly connected to the second roll 31 in a winding manner. When the second drive member 12 is controlled to drive the second roll 31 to rotate, it drives the wet film assembly 40 to move in a second direction opposite to the first direction, so that the wet film assembly 40 takes water from the second water tank 52 and unfolds to the air outlet side of the evaporator 100.

[0030] In one embodiment, the first water tank 51 and the second water tank 52 are located at the bottom and top of the evaporator 100, respectively. The humidification device also includes a water pump 60 and a water outlet pipe 70. The water pump 60 is used to extract the condensate collected in the first water tank 51. One end of the water outlet pipe 70 is connected to the water pump 60, and the other end is connected to the second water tank 52.

[0031] In this embodiment, the first water tank 51 and the second water tank 52 are respectively fixedly installed at the bottom and top of the evaporator 100. The opening of the first water tank 51 faces the air outlet side of the evaporator 100 and is used to collect the condensate that condenses on the surface of the heat exchange fins and falls naturally along the direction of gravity when the evaporator 100 is working. The water pump 60 and the outlet pipe 70 together form a closed water system with the first water tank 51 and the second water tank 52. The suction end of the water pump 60 is connected to the first water tank 51, and the outlet end of the water pump 60 is connected to the second water tank 52 through the outlet pipe 70. The outlet pipe 70 is arranged from bottom to top along the inside of the casing to realize the lifting and transportation of condensate. During operation, by starting and stopping the water pump 60 and controlling the flow rate, the condensate collected in the first water tank 51 is pumped to the second water tank 52 to form an upper water source.

[0032] Preferably, the second spool 31 of the second transmission assembly 30 is placed inside the second water tank 52, so that the end of the wet film assembly 40 wound around it forms an immersion section in the second water tank 52. When there is water in the second water tank 52, the wet film assembly 40 absorbs the water in the second water tank 52 into the membrane body under its own water absorption. Then, driven by the drive assembly 10 (for example, driven by the second drive member 12 to rotate the second spool 31), the wet film assembly 40 leaves the second water tank 52 in a second direction opposite to the first direction and unfolds to the air outlet side of the evaporator 100 to complete the humidification process. The water on the membrane that is not carried away by the air falls back through the lower edge of the evaporator 100 under the action of gravity and naturally collects in the first water tank 51, thereby forming a circulating water replenishment path of "first water tank 51 - water pump 60 - water outlet pipe 70 - second water tank 52 - wet film assembly 40 absorbs water - air humidification - condensation falls back to the first water tank 51".

[0033] In one embodiment, the humidification device further includes at least two fixed shafts 80, which are spaced apart between the first transmission assembly 20 and the second transmission assembly 30.

[0034] In this embodiment, at least two fixed shafts 80 are used to guide and tension the running path of the wet film assembly 40. Specifically, the fixed shafts 80 include a first fixed shaft and a second fixed shaft, both of which have axes parallel to the axes of the first reel 21 and the second reel 31, and their ends are fixedly connected to the left and right side plates of the indoor unit housing. The first fixed shaft and the second fixed shaft are arranged sequentially along the unfolding direction of the wet film assembly 40 between the air outlet side of the evaporator 100 and the line connecting the reels, thereby forming a multi-point guide between the first transmission assembly 20 and the second transmission assembly 30. During operation, the wet film assembly 40 is led out from the second reel 31, passes through the first fixed shaft and the second fixed shaft in sequence, then passes through the air outlet area of ​​the evaporator 100, and then winds onto the first reel 21. When the second driving member 12 drives the second reel 31 to rotate, the wet film assembly 40 moves in the second direction; conversely, the first driving member 11 drives the first reel 21 to rotate, causing the wet film assembly 40 to move in the first direction. The fixed axis 80, which is set at the above intervals, limits the movement trajectory of the wet film assembly 40 within a predetermined channel on the air outlet side of the evaporator 100.

[0035] Combination Figure 3 As shown, in one embodiment, the wet membrane assembly 40 includes a hydrophilic membrane 41 and a non-hydrophilic membrane 42, the hydrophilic membrane 41 and the non-hydrophilic membrane 42 are connected and the connection is arranged diagonally.

[0036] In this embodiment, the wet film assembly 40 can be divided into a hydrophilic membrane 41 and a non-hydrophilic membrane 42. The hydrophilic membrane 41 is preferably a composite material composed of cellulose-based materials and inorganic fiber materials, and its surface has hydrophilicity and capillary channels. The non-hydrophilic membrane 42 is a material that does not have hydrophilic effect and has basically no capillary action, preferably a non-hydrophilic material such as plastic, and water is difficult to adhere evenly to its surface. The hydrophilic membrane 41 and the non-hydrophilic membrane 42 are compositely connected within the same sheet. The connection point between the two is diagonally arranged relative to the unfolded edge of the wet film assembly 40 or relative to the first direction of movement of the wet film assembly 40. The diagonal connection line can be a straight line or an arc, so that the effective area of ​​the hydrophilic membrane 41 in the wind-receiving area can be continuously varied along the length or movement direction of the wet film assembly 40, thereby allowing the humidification area to be continuously varied to achieve continuous adjustment of the humidification amount. During assembly, the wet film assembly 40 unfolds along the air outlet side of the evaporator 100. The relative positions of the hydrophilic membrane 41 and the non-hydrophilic membrane 42 can be selected according to the location of the water source: in one arrangement, the hydrophilic membrane 41 is placed on the side closer to the water source (such as the second water tank 52), and the non-hydrophilic membrane 42 is placed on the side farther away from the water source; in another equivalent arrangement, the hydrophilic membrane 41 can be placed near the bottom, and the non-hydrophilic membrane 42 can be placed near the top. During operation, when water is present in the water tank 50, the end of the hydrophilic membrane 41 of the wet membrane assembly 40 forms an immersion section in the water tank. Water is uniformly adsorbed into the membrane body under the combined action of capillary action and hydrophilicity on the surface of the hydrophilic membrane 41. After the wet membrane assembly 40 is driven out of the water tank 50, the air flowing through the air outlet side of the evaporator 100 passes through the wet membrane assembly 40. The water molecules carried by the hydrophilic membrane 41 evaporate from the membrane surface into the air, while the non-hydrophilic membrane 42 basically does not adsorb or retain moisture.

[0037] In one embodiment, the wet membrane assembly 40 includes at least three segments arranged sequentially along the first direction or the second direction: a first segment, a second segment, and a third segment. The first segment is a hydrophilic membrane segment, the third segment is a non-hydrophilic membrane segment, and the second segment is a mixed segment of hydrophilic and non-hydrophilic membranes. In the second segment, the hydrophilic membrane 41 and the non-hydrophilic membrane 42 are connected and the connection is arranged diagonally.

[0038] In this embodiment, the wet membrane assembly 40 is sequentially divided into at least three segments along the first direction or the second direction: a first segment, a second segment, and a third segment. The first segment is a hydrophilic membrane segment (e.g., ...). Figure 3 The rectangular region from A to B can be constructed entirely using a hydrophilic membrane 41; the third segment is a non-hydrophilic membrane segment (such as...). Figure 3 The rectangular region from C to D can be constructed entirely of a non-hydrophilic membrane 42; the second segment is a hybrid segment of hydrophilic membrane 41 and non-hydrophilic membrane 42 (e.g. Figure 3 (The rectangular area from B to C). The above three sections are connected as a whole to form a single-piece wet film assembly 40 to meet the installation requirements of winding, guiding and reciprocating movement.

[0039] In the second segment, the hydrophilic membrane 41 and the non-hydrophilic membrane 42 are connected to each other at a diagonal arrangement. This "diagonal arrangement" means that the connecting line is obliquely arranged relative to the unfolded edge of the wet membrane assembly 40 or relative to the direction of movement of the wet membrane assembly 40. The connecting line can be a straight line or an arc. Through this diagonal arrangement, the effective coverage area of ​​the hydrophilic membrane within the windward area continuously changes along the direction of movement of the wet membrane assembly 40, thereby correspondingly making the humidification area continuously change and meeting the need for continuous adjustment of the humidification amount. Specifically, when the wet membrane assembly 40 moves along the first direction, the windward coverage ratio of the hydrophilic membrane 41 in the second segment can gradually increase; when the wet membrane assembly 40 moves along the second direction, the above change process reverses, achieving bidirectional adjustability.

[0040] Regarding the assembly orientation, the relative positions of the three sections can be selected based on the geometric relationship between the water source and the windward area: in a preferred arrangement, the first section (hydrophilic membrane section) is positioned closer to the water source to form the initial water intake section through wetting; the third section (non-hydrophilic membrane section) is positioned further away from the water source to form a low water content zone at the end of the stroke; in another equivalent arrangement, the hydrophilic membrane 41 can be positioned closer to the bottom and the non-hydrophilic membrane 42 closer to the top. Through the above segmentation and diagonal connection relationship, the first section provides stable water absorption and storage capacity, the second section achieves continuous adjustment of humidification through a continuous transition of hydrophilic or non-hydrophilic ratios, and the third section provides a low water retention zone to facilitate water reflux or reduce end-of-stroke residue.

[0041] In one embodiment, in the first direction, the length of any one of the first, second, and third segments is greater than the length of the evaporator 100.

[0042] In this embodiment, to match the winding-guiding-spreading path, the length of each of the first, second, and third segments is designed to be greater than the length of the evaporator 100 in the first direction, and a winding allowance is reserved at the ends of each segment to accommodate the winding and unwinding of the first reel 21 and the second reel 31, as well as the guiding crossing of the fixed shaft 80. The first water tank 51 and the second water tank 52 are respectively fixed to the bottom and top of the evaporator 100. The first reel 21 is disposed in the first water tank 51, and the second reel 31 is disposed in the second water tank 52. The suction end of the water pump 60 is connected to the first water tank 51, and the outlet end is connected to the second water tank 52 via the outlet pipe 70, forming a water system of "first water tank 51-water pump 60-outlet pipe 70-second water tank 52".

[0043] In one embodiment, the hydrophilic membrane 41 has a porous mesh structure.

[0044] In this embodiment, the hydrophilic membrane 41 can be formed using a porous mesh structure, preferably composed of a composite of cellulose-based materials and inorganic fiber materials. The mesh skeleton with three-dimensional interconnected pores is formed by interlacing the fibers to construct continuous capillary channels inside the membrane. The hydrophilic membrane 41 and the non-hydrophilic membrane 42 are composited in the same sheet and are diagonally connected in the second section of the wet membrane assembly 40, so that the effective coverage area of ​​the hydrophilic membrane 41 in the air outlet area of ​​the evaporator 100 changes continuously with the reciprocating movement of the wet membrane assembly 40.

[0045] Combination Figure 4 and Figure 5 As shown, to achieve energy-saving humidification control based on relative humidity closed-loop, the control system of the first drive unit 11 and the second drive unit 12 consists of a signal receiving module 101, a main control module 102, and a processing module 103. The signal receiving module 101 receives sampling data from the indoor unit's temperature and humidity sensors, as well as user mode commands. The processing module 103 calculates the current indoor relative humidity φ1 according to a preset algorithm and reads the target relative humidity range φ2. The main control module 102 generates control commands to drive the first drive unit 11 and the second drive unit 12, controlling the forward and reverse winding of the upper and lower rollers (i.e., the second roller 31 and the first roller 21), thereby changing the effective air-receiving area of ​​the wet film assembly 40 on the air outlet side of the evaporator 100 and achieving humidification adjustment. For ease of description, the reset reference position of the wet film assembly 40 on the air outlet side is defined as AA (i.e., Figure 3 The position where point D coincides with the first scroll 21) defines the target displacement reference position in the humidification direction as BB (i.e. Figure 3 Point B coincides with the position of the first roll 21), the single displacement step is p (a constant calibrated before leaving the factory), the temperature and humidity sampling interval is T (a constant), and the (n+1)th sampling refers to the cyclic sampling after the first sampling (n=1,2,3…).

[0046] When the air conditioner starts up and enters the control process, it first performs a reset (step 1): the first drive component 11 is activated, the second drive component 12 stops, and the wet film assembly 40 is driven back to position AA to ensure consistent initial airflow area. Then, at the first interval T (step 2), the indoor temperature and humidity are collected by the indoor unit's temperature and humidity sensors, and the processing module 103 calculates the current indoor relative humidity φ1. The control strategy supports two modes: automatic and manual. In automatic mode (step 3.1), φ1 is compared with the human comfort relative humidity φ2. During cooling operation, φ2 is set to 40%RH~60%RH; during heating operation, φ2 is set to 30%RH~60%RH. When φ1 < φ2, humidification begins; when φ1 ≥ φ2, humidification stops. In manual mode (step 3.2), the user can select one of three humidity modes: "Dry / Cool / Comfortable". The main control module 102 sets the φ2 range accordingly: Cooling: Dry 40%RH~45%RH, Cooling 45%RH~55%RH, Comfortable 55%RH~60%RH; Heating: Dry 30%RH~40%RH, Cooling 40%RH~50%RH, Comfortable 50%RH~60%RH. See the table below for details. In the first round of decision-making and execution (step 4), when φ1 > φ2, both the first driving component 11 and the second driving component 12 stop to maintain the current wet film area and stop humidification; when φ1 = φ2, both motors stop to maintain humidity; when φ1 < φ2, the first driving component 11 operates and the second driving component 12 stops, driving the wet film position to move a distance p from AA along the humidification direction to BB, expanding the wind-receiving area of ​​the hydrophilic zone to increase evaporation and achieve humidification. The system then enters a cyclic adjustment (step 5): at the (n+1)th interval T, the indoor temperature and humidity are acquired again and φ1 is calculated. When φ1 > φ2, the second drive 12 is activated and the first drive 11 is stopped. The wet film position moves back a distance p from AA to BB to reduce humidification (during this process, the winding in the upper direction of the spool reduces the wind-receiving area of ​​the hydrophilic film 41 and increases the wind-receiving area of ​​the non-hydrophilic film 42 in the wet film assembly 40). When φ1 = φ2, both drive components stop and maintain the current state. When φ1 < φ2, the first drive 11 is activated again and the second drive 12 is stopped. The wet film moves a distance p from AA to BB to enhance humidification. To avoid mechanical over-limit and control oscillation, the main control module 102 sets travel limits and position memory at both ends of AA / BB. Minimum hysteresis and minimum holding time can be introduced in the engineering implementation to ensure stable execution of the step p without causing frequent start-stop.

[0047] During the shutdown reset phase (step 6), after the air conditioner is shut down, the second drive component 12 is activated and the first drive component 11 stops, controlling the wet film assembly 40 to return to position AA, so that it can directly enter the standard initial state the next time it is turned on. In conjunction with the water system linkage, during the cooling operation, the evaporator condensate is collected from the lower water tank (first water tank 51), and the water pump pumps the low-temperature condensate through the outlet pipe 70 to the upper water tank (second water tank 52). On the one hand, this provides a continuous water source for the wet film at the upper roller end in the upper water tank to achieve isenthalpic evaporative humidification. On the other hand, the low-temperature condensate is used to re-cool the water in the upper water tank, thus improving the indoor cooling experience. Liquid level switches are set in the upper and lower water tanks respectively and connected to the signal receiving module 101. When the liquid level is abnormal, an alarm can be set in time to avoid overflow or dry running. When φ1 < φ2 is obtained from 6 consecutive samplings (determining that the system needs continuous humidification but the humidity is not up to standard), the main control module 102 triggers a user reminder, prompting the user to check whether the upper water tank is short of water and to replenish water in time.

[0048] In summary, the above program, with the fan 200 located on the air inlet side of the evaporator 100 and the wet film assembly 40 located on the air outlet side, achieves discrete and continuous adjustment of the effective area of ​​the wet film at the air outlet of the evaporator 100 by step p through time-division control of the upper and lower windings by the drive components: when humidification is needed, the proportion of the hydrophilic area covered by the wind is increased; when humidification is suppressed, the winding is reversed to reduce the proportion of the covered area. In automatic mode, the system keeps the indoor relative humidity close to the human comfort zone (40%RH~60%RH for cooling, 30%RH~60%RH for heating), and in manual mode, the user can select the target range of "dry / cool / comfortable". The entire process does not introduce external loads such as atomizers, and only relies on the existing motor and transmission mechanism of the indoor unit to achieve humidification function control, taking into account both energy saving and comfort, and ensuring a stable and perceptible comfort experience under both cooling and heating conditions; at the same time, liquid level monitoring and water shortage reminders improve operational safety and maintainability.

[0049] In summary, a reciprocating wet film assembly 40 (including a hydrophilic / non-hydrophilic composite sheet and changing the effective evaporation area in the first / second direction via a first transmission assembly 20 and a second transmission assembly 30) is arranged on the air outlet side of the evaporator 100 of the air conditioner. The evaporator condensate is circulated to the upper water tank (i.e., the first water tank 51) by a water system consisting of a first water tank 51, a water pump 60, a water outlet pipe 70, and a second water tank 52, thereby achieving continuous wetting of the wet film. The control end calculates the indoor relative humidity based on the real-time detection of the indoor unit's temperature / humidity sensor and compares the deviation with the preset relative humidity. The drive assembly 10 (e.g., the start / stop, speed, and displacement stroke of the stepper motor) is adjusted in a closed loop according to the magnitude of the deviation, thereby continuously adjusting the wind coverage ratio and isenthalpic evaporation area of ​​the wet film, and achieving continuous variable control of the humidification amount. The entire humidification process does not introduce external loads such as atomizers. It utilizes only the existing motor of the indoor unit and the operation of the fan 200 on the air intake side to complete the humidification function control, forming an energy-saving integrated solution. Therefore, after entering humidification control, the system can stabilize the indoor relative humidity within the user-set comfort range, and users can also achieve personalized adjustments through target humidity / comfort settings. The beneficial effects of this solution are: energy-saving humidification can be achieved without adding new equipment; indoor relative humidity can be maintained within a comfortable range and supports user-adjusted settings; a humidification device with continuously adjustable evaporation area is installed on the indoor unit side to achieve continuous variation in humidification output; indoor relative humidity is calculated and controlled in a closed loop using temperature and humidity sensors; and isenthalpic humidification devices and control strategies are adopted to avoid continuous operation of the atomizer, further reducing energy consumption.

[0050] This utility model also provides an air conditioner, including an evaporator 100, a fan 200 and a humidification device as described above. The fan 200 is disposed on the air inlet side of the evaporator 100, and the wet film assembly 40 of the humidification device is disposed on the air outlet side of the evaporator 100.

[0051] In this embodiment, the air conditioner includes an air duct, an evaporator 100, and a fan 200 arranged sequentially within the casing. The fan 200 is located on the air inlet side of the evaporator 100 and installed at the front end of the air duct. The fan 200 includes a motor and fan blades and is fixed to the front end of the air duct, so that indoor air is drawn in from the air inlet side and flows along the air duct to the evaporator 100 under the drive of the fan 200. The humidification device is located on the air outlet side of the evaporator 100, and its wet film assembly 40 extends across the air outlet channel of the evaporator 100, so that the air after heat exchange in the evaporator 100 immediately contacts the wet film assembly 40 after flowing out of the evaporator 100, thereby completing the humidification process and being sent out through the air outlet.

[0052] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A humidifying device applied to an air conditioner, the air conditioner comprising an evaporator, characterized in that, The humidification device includes a drive assembly, a first transmission assembly, a second transmission assembly, a wet film assembly, and a water tank. The first transmission assembly and the second transmission assembly are respectively disposed at both ends near the evaporator. The wet film assembly is connected to the first transmission assembly and the second transmission assembly and is located on the air outlet side of the evaporator. The drive assembly is used to drive the first transmission assembly to move the wet film assembly in a first direction, or to drive the second transmission assembly to move the wet film assembly in a second direction opposite to the first direction. At least one of the first transmission assembly and the second transmission assembly is disposed in the water tank. The water absorption of the wet film assembly gradually increases or decreases along the first direction.

2. The humidification device according to claim 1, characterized in that, The water tank includes a first water tank disposed at one end of the evaporator, the first transmission component includes a first reel, the drive component includes a first drive member connected to the first reel, the first reel is disposed in the first water tank, the first water tank is used to collect condensate generated by the evaporator, one end of the wet film component is wound and connected to the first reel, and the first drive member can drive the first reel to rotate so as to move the wet film component in the first direction.

3. The humidification device according to claim 2, characterized in that, The water tank includes a second water tank disposed at the other end of the evaporator, the second transmission component includes a second reel, the drive component includes a second drive member connected to the second reel, the other end of the wet film assembly is wound and connected to the second reel, and the second drive member can drive the second reel to rotate so as to drive the wet film assembly to move in the second direction.

4. The humidification device according to claim 3, characterized in that, The first water tank and the second water tank are located at the bottom and top of the evaporator, respectively. The humidification device also includes a water pump and a water outlet pipe. The water pump is used to extract the condensate collected in the first water tank. One end of the water outlet pipe is connected to the water pump, and the other end is connected to the second water tank.

5. The humidification device according to claim 1, characterized in that, It also includes at least two fixed shafts, which are spaced apart between the first transmission assembly and the second transmission assembly.

6. The humidification device according to claim 1, characterized in that, The wet membrane assembly includes a hydrophilic membrane and a non-hydrophilic membrane, wherein the hydrophilic membrane is connected to the non-hydrophilic membrane and the connection point is arranged diagonally.

7. The humidification device according to claim 6, characterized in that, The wet membrane assembly includes at least three segments arranged sequentially along the first direction or the second direction: a first segment, a second segment, and a third segment. The first segment is a hydrophilic membrane segment, the third segment is a non-hydrophilic membrane segment, and the second segment is a mixed segment of hydrophilic and non-hydrophilic membranes. In the second segment, the hydrophilic membrane and the non-hydrophilic membrane are connected and the connection is arranged diagonally.

8. The humidification device according to claim 7, characterized in that, In the first direction, the length of any one of the first, second, and third segments is greater than the length of the evaporator.

9. The humidification device according to claim 6, characterized in that, The hydrophilic membrane has a porous mesh structure.

10. An air conditioner, characterized in that, The device includes an evaporator, a fan, and a humidification device as described in any one of claims 1-9, wherein the fan is disposed on the air inlet side of the evaporator, and the wet film assembly of the humidification device is disposed on the air outlet side of the evaporator.

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