Elevator air conditioner

Abstract

This utility model provides an elevator air conditioner, relating to the field of air conditioning technology. The elevator air conditioner includes: a housing with a return air vent; a partition for dividing the internal space of the housing into a first cavity and a second cavity; an evaporator disposed in the first cavity and near the return air vent; a condenser disposed in the second cavity; an axial fan disposed in the second cavity; a water tray defining a water trough located below the evaporator and condenser; a water level detection device for detecting the water level in the water trough; a water pump assembly for drawing condensate from the water trough to the condenser for evaporation; and a water agitator installed on the outer edge of the axial fan, with the bottom of the water agitator not lower than the preset high water level of the water trough. The water agitator of the axial fan serves as a backup and auxiliary means. At a preset low water level, only the water pump draws water; if the water pump is clogged, the water agitator can be used to evaporate the condensate. At a preset high water level, the water pump and water agitator work together to improve the condensate evaporation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, and in particular relates to an elevator air conditioner. Background Technology

[0002] Elevator air conditioning is a small cooling unit specifically designed for elevator cars. It is typically installed on the top of the car or inside the shaft to provide a comfortable riding environment for passengers in summer or high-temperature conditions. Due to the confined, enclosed space and poor heat dissipation of elevator shafts, elevator air conditioning systems must meet specific requirements such as small size, high energy efficiency, and high reliability. Condensate treatment is one of its key technologies: during the cooling process, condensate continuously precipitates on the evaporator surface. If it cannot be drained or evaporated in a timely and reliable manner, it can easily cause water accumulation and overflow, leading to problems such as electrical short circuits, metal corrosion, and bacterial growth.

[0003] Elevator air conditioning systems often employ a single drainage / evaporation method for condensate drainage. This not only lacks reliability but also presents various drawbacks depending on the specific drainage / evaporation method used. For example, when only a fan-driven water impeller is used, the water volume is insufficient under low load or low speed conditions, leading to condensate accumulation. Under high load or high speed conditions, the high-speed water impeller generates significant noise, resulting in a poor passenger experience. When only a water pump is used, drainage is impossible if the pump is clogged, malfunctions, or there is a power outage, posing a risk of overflow.

[0004] In related technologies, there is a technical solution that combines a fan-driven water impeller with a water pump. However, this solution involves placing a water baffle in the water-receiving base, dividing the space within the base into a first water-receiving cavity and a second water-receiving cavity located on either side of the baffle. This ensures that the first and second water-receiving cavities do not interfere with each other. The water impeller and water pump are respectively located within the first and second water-receiving cavities and operate independently. The water impeller evaporates condensate that falls into the first water-receiving cavity before it has time to evaporate from the condenser surface, preventing water accumulation in the first water-receiving cavity. However, this solution still suffers from technical problems such as high noise levels, water output limited by rotational speed, and the risk of overflow if the water pump becomes clogged or malfunctions. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, According to embodiments of this disclosure, an elevator air conditioner is provided, the elevator air conditioner comprising: The housing includes a cold air outlet and a return air inlet; A partition is provided inside the housing to divide the internal space of the housing into a first cavity and a second cavity, and the return air vent and the cold air outlet are connected to the first cavity; An evaporator is located within the first cavity and is positioned near the return air vent. The condenser is located within the second cavity; An axial fan is disposed in the second cavity and located between the condenser and the partition plate, for blowing air onto the condenser; A water receiving tray is installed at the bottom of the housing, and a water receiving trough is defined inside the water receiving tray below the evaporator and the condenser; A water level detection device is installed on the water receiving tray to detect the water level in the water receiving tank; A water pump assembly for drawing condensate from the water tank to the condenser for evaporation, the water pump assembly including a water pump configured to start or stop according to the water level in the water tank; A water impeller is installed on the outer edge of the axial flow fan, and the bottom of the water impeller is not lower than the preset high water level of the water receiving tank. When the water level detection device detects that the water level in the water receiving tank has reached a preset low water level, the water pump starts to draw the condensate onto the condenser; when the water level detection device detects that the water level in the water receiving tank has reached a preset high water level, the axial fan and the water pump work together, and the rotation of the axial fan drives the water pumping wheel to rotate, so as to pump water onto the condenser for evaporation.

[0006] The above technical solution has the following advantages or beneficial effects: the evaporator and condenser share the same water collection tank, and all condensate evaporates within the casing, eliminating the need for external drain pipes or water emptying during shutdown. Utilizing the axial fan's water agitator as a backup and auxiliary means, the agitator can operate independently to continuously evaporate condensate when the water pump fails due to blockage or malfunction, avoiding the risk of overflow due to excessive condensate and ensuring the continuous operation of the elevator air conditioner within the enclosed elevator shaft, thus improving redundancy and reliability. When the condensate reaches a preset high level, the coordinated operation of the water pump and the agitator connected to the axial fan achieves efficient evaporation of the condensate, significantly improving evaporation efficiency and avoiding the risk of condensate overflow while effectively preventing the noise problem caused by prolonged independent use of the agitator.

[0007] According to an embodiment of this disclosure, the water receiving tray includes: The first water receiving tray has the water receiving trough formed inside it, and a support part is provided on the side wall of the water receiving trough; The second water receiving tray has its bottom edge supported on the support part. The second water receiving tray is provided with an overflow part and a through part. The overflow part connects the water receiving tank and the second cavity. The water pump is installed on the second water receiving tray and its inlet extends into the water receiving tank through the through part.

[0008] The above technical solution has the following advantages or beneficial effects: by setting up a separate first water receiving tray, the water storage capacity of the water receiving tank is increased, which can meet the normal operation of the elevator air conditioner in humid weather and avoid the risk of condensate overflow.

[0009] According to an embodiment of this disclosure, the evaporator, the condenser, and the partition are mounted on the second water receiving tray. A gap is formed between the side wall of the second water receiving tray and the side wall of the water receiving trough. The bottom end of the housing is inserted into the gap. The housing is detachably connected to the side walls of the second water receiving tray and the first water receiving tray.

[0010] The above technical solution has the following advantages or beneficial effects: the first water receiving tray can be disassembled separately, allowing for pump repair without draining the condensate from the entire water receiving tank in case of pump failure, thus shortening downtime. Simultaneously, the first water receiving tray can be quickly and periodically disassembled and cleaned without disassembling the entire unit, preventing mud, dust, and other contaminants from clogging the pump or spray nozzles, and ensuring long-term stable operation of the elevator air conditioner.

[0011] According to an embodiment of this disclosure, the bottom surface of the water receiving tank gradually decreases in the direction from the condenser to the evaporator.

[0012] The above technical solution has the following advantages or beneficial effects: the bottom of the water receiving tank is set with a slope, so that the condensate flows naturally along the slope to the lowest point below the evaporator, and the condensate can be pumped away by the water pump in time without the need for additional guide parts.

[0013] According to an embodiment of this disclosure, the bottom surface of the water receiving tank is provided with a plurality of reinforcing ribs, which are arranged in a crisscross pattern along the axial direction of the axial fan and its perpendicular direction to form a grid-like rectangular array.

[0014] The above technical solution has the following advantages or beneficial effects: the grid-like rectangular array of several reinforcing ribs not only improves the overall rigidity of the water receiving tray and prevents warping and deformation during transportation or operation, but also traps large particles of mud and sand, avoids water pump suction and blockage, and extends the maintenance-free cycle.

[0015] According to an embodiment of this disclosure, the water pump assembly further includes a water delivery pipe and a spray box, the spray box being disposed above the condenser, and the water delivery pipe connecting the water pump and the spray box.

[0016] The above technical solution has the following advantages or beneficial effects: the water pump assembly sprays condensate onto the condenser through the spray box for evaporation, which not only absorbs the heat of the condenser, but also cleans the condenser and effectively improves the efficiency of the condenser.

[0017] According to an embodiment of this disclosure, the spray box has a water storage cavity inside, and a plurality of spray holes facing downward toward the condenser are evenly distributed on the spray box, and the plurality of spray holes are arranged in at least one row along the length direction of the spray box.

[0018] The above technical solution has the following advantages or beneficial effects: several evenly distributed spray holes ensure that condensate is sprayed evenly onto the fins of the condenser, which improves the heat exchange efficiency and thus improves the cooling effect of the elevator air conditioner.

[0019] According to embodiments of this disclosure, the diameter of the spray hole is d, where d≤5mm and d≥2mm.

[0020] The above technical solution has the following advantages or beneficial effects: If the orifice diameter d is greater than 5mm, the water droplet size is too large, causing the condensate to drip off before it is fully evaporated, thus weakening the self-evaporation capacity of the condensate. If the orifice diameter d is less than 2mm, not only is the total spray volume insufficient, but condensate also accumulates in the drip tray. Furthermore, the high dust content in the condensate makes spray holes smaller than 2mm prone to clogging, leading to spray interruption and loss of the dual function of "cleaning + evaporation". Setting the spray holes within a smaller orifice diameter range of 2-5mm can effectively remove dust and evenly evaporate condensate, improving evaporation and drainage efficiency.

[0021] According to an embodiment of this disclosure, the spray box has two clamping walls extending toward the water receiving tray, and a clamping position for inserting the top of the condenser is formed between the two clamping walls. The two clamping walls abut against the two sides of the condenser in the thickness direction.

[0022] The above technical solution has the following advantages or beneficial effects: by setting two clamping walls, the spray box can be directly snapped onto the top of the condenser, which simplifies the assembly process of the production line and reduces the difficulty of maintenance.

[0023] According to embodiments of this disclosure, an elevator air conditioner is also provided, comprising: The housing includes a cold air outlet and a return air inlet; A partition is provided inside the housing to divide the internal space of the housing into a first cavity and a second cavity, and the return air vent and the cold air outlet are located on the side wall of the first cavity; An evaporator is located within the first cavity and is positioned near the return air vent. The condenser is located within the second cavity; An axial fan is disposed in the second cavity and located between the condenser and the partition plate, for blowing air onto the condenser; A water receiving tray is installed at the bottom of the housing, and a water receiving trough is defined inside the water receiving tray below the evaporator and the condenser; A water level detection device is installed on the water receiving tray to detect the water level in the water receiving tank; A water pump that, when the water level in the water receiving tank reaches or exceeds a preset low water level, removes the condensate from the water receiving tank. A water impeller is installed on the outer edge of the axial flow fan. When the water level in the water receiving tank reaches a preset high water level, the axial flow fan rotates to pump water to the condenser for evaporation.

[0024] The above technical solution has the following advantages or beneficial effects: the evaporator and condenser share the same water collection tank, and all condensate evaporates within the casing, eliminating the need for an external drain pipe or water emptying during shutdown. The water level detection device automatically starts and stops the water pump or links the axial fan to handle condensate evaporation based on two preset water level signals: "preset low water level" and "preset high water level," saving energy and reducing noise. It also avoids the risk of condensate overflow in case of pump failure, effectively ensuring reliable air conditioning operation. Attached Figure Description

[0025] Figure 1 This is an exterior view of an elevator air conditioner according to one embodiment of this disclosure; Figure 2 This is an exterior view of the elevator air conditioner from another perspective according to one embodiment of the present disclosure; Figure 3 This is a schematic diagram of the internal structure of an elevator air conditioner according to one embodiment of this disclosure; Figure 4 This is a schematic diagram of the internal structure of an elevator air conditioner from another perspective according to one embodiment of this disclosure; Figure 5 This is a cross-sectional view of an elevator air conditioner according to one embodiment of this disclosure; Figure 6 This is a schematic diagram of a refrigeration module installed on a water receiving tray according to one embodiment of the present disclosure; Figure 7 This is a structural schematic diagram of a water pump assembly according to one embodiment of the present disclosure; Figure 8 This is a partial schematic diagram of the internal structure of an elevator air conditioner according to an embodiment of the present disclosure; Figure 9 This is a structural schematic diagram of the water receiving tray according to one embodiment of the present disclosure; Figure 10 This is a structural schematic diagram of the first water receiving tray according to an embodiment of this disclosure; Figure 11 This is a cross-sectional view of the water receiving tray according to one embodiment of the present disclosure; Figure 12 This is an explosion diagram of the water receiving tray according to one embodiment of this disclosure; Figure 13This is a schematic diagram of the structure of the spray box according to one embodiment of the present disclosure.

[0026] In the above figures: Elevator air conditioner 100; Housing 1; Return air vent 11; Cold air outlet 12; Condenser air inlet 13; Condenser air outlet 14; First cavity 15; Second cavity 16; Return air vent connecting wall 17; Cold air outlet connecting wall 18; Partition 2; Air duct housing 3; Air inlet 31; Exhaust outlet 32; First air duct 33; Refrigeration module 4; Evaporator 41; Condenser 42; Axial flow fan 43; Refrigeration fan blade 44; Drive motor 45; Output shaft 451; Compressor 46; First water receiving tray 5; Water receiving trough 51; Support part 52; Recessed part 53; Second water receiving tray 6; Overflow part 61; Through part 62; Water pump assembly 7; Water pump 71; Water pipe 72; Spray box 73; Spray hole 731; Clamping wall 732; Water impeller 8; Reinforcing rib 9. Detailed Implementation

[0027] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0028] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0029] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] This utility model proposes an elevator air conditioner 100, as described below (refer to...). Figures 1-13 Describe the elevator air conditioner 100.

[0033] refer to Figure 1 The elevator air conditioner 100 may include a housing 1, the interior of which is defined by a receiving space for accommodating various components of the elevator air conditioner 100.

[0034] In this embodiment, the housing 1 can be a hexahedral structure that matches the rectangular space at the top of the elevator, making it easy to install close to the top and improving the utilization rate of the shaft space.

[0035] The housing 1 can be a sheet metal part. The housing 1 made of sheet metal has the advantages of low cost, light weight, and easy mass production stamping, and can balance strength and heat dissipation.

[0036] Continue to refer to Figure 1 The housing 1 may include a return air vent 11, which is used for air intake.

[0037] The housing 1 may include a cold air outlet 12, which is used to discharge the cooled air and can directly provide cooling to the car.

[0038] In this embodiment, one side of the housing 1 is a function panel, and both the return air vent 11 and the cold air outlet are located on the function panel.

[0039] refer to Figure 5 The elevator air conditioner 100 may include a partition 2. The partition 2 is disposed inside the housing 1 to divide the internal space of the housing 1 into a first cavity 15 and a second cavity 16. The return air vent 11 and the cold air outlet 12 are located on the side wall of the first cavity 15.

[0040] By setting up partition 2, the hot and cold areas inside the casing 1 are physically isolated, preventing hot air from entering the cold air side and improving cooling efficiency.

[0041] refer to Figure 3 The elevator air conditioner 100 may include a duct housing 3, which is disposed within the first cavity 15. A first air duct 33 is formed inside the duct housing 3, which can form a directional airflow channel.

[0042] refer to Figure 3 , Figure 4 The air duct housing 3 may include an air inlet 31, which is connected to the first air duct 33 to allow air to enter the first air duct 33. The air inlet 31 of the first air duct 33 is arranged opposite to the return air inlet 11, which allows external air to enter in a straight line, reducing flow resistance and power consumption.

[0043] The air duct housing 3 may include an exhaust port 32, which is connected to the first air duct 33 to allow air to be discharged from the first air duct 33. The exhaust port 32 of the first air duct 33 is arranged opposite to the cold air outlet 12. This arrangement allows the cold air to be blown out in a straight line, avoiding eddies, reducing noise and increasing the air delivery distance.

[0044] In some embodiments of this application, reference is made to Figure 4 To ensure convenient pipe connection, a return air inlet connecting wall 17 is provided on the outer side of the functional panel at the position corresponding to the return air inlet 11. A cold air outlet connecting wall 18 is provided on the outer side of the functional panel at the position corresponding to the cold air outlet.

[0045] In some embodiments of this application, the elevator air conditioner 100 may include a refrigeration module 4.

[0046] The refrigeration module 4 may include an evaporator 41, which is positioned near the return air vent 11. (Reference) Figure 4 Evaporator 41 is installed on the air duct housing 3. Evaporator 41 is located between air inlet 31 and return air inlet 11. During the flow and rotation of the air, the air will pass through evaporator 41 and be cooled by the action of evaporator 41.

[0047] The cooling module 4 may include a cooling fan blade 44, which is disposed in the first air duct 33. The cooling fan blade 44 is disposed to drive the airflow in a specific direction, so as to ensure that the airflow can enter from the air inlet 31 of the first air duct 33 and exit from the air outlet 32 ​​of the first air duct 33.

[0048] In some embodiments of this application, the refrigeration module 4 may include a condenser 42 disposed within the second cavity 16. This arrangement completely isolates the condenser 42 from the cold air side, allowing the hot air from the condenser 42 to be directly discharged into the shaft, avoiding secondary heating of the cold air.

[0049] The cooling module 4 may include an axial fan 43, which is disposed within the second cavity 16. (Reference) Figure 5 An axial fan 43 is located between the condenser 42 and the baffle 2 to blow air onto the condenser 42. The axial fan 43 forces convection to cool the condenser 42, reducing the condensing temperature and improving the overall energy efficiency ratio of the unit.

[0050] In some embodiments of this application, the cooling module 4 may include a drive motor 45, as shown in the reference. Figure 5 The drive motor 45 is installed inside the second cavity 16. The drive motor 45 is located on the side of the air duct housing 3 away from the functional panel. The output shaft 451 of the drive motor 45 is connected to the cooling fan blade 44 and is used to drive the cooling fan blade 44 to rotate.

[0051] In this embodiment, the partition 2 and the air duct housing 3 are respectively provided with through holes at positions corresponding to the output shaft 451 of the drive motor 45, and the through holes are used for the output shaft 451 to pass through. The output shaft 451 of the drive motor 45 passes through the partition 2 in sequence and is connected to the cooling fan blade 44 via the air duct housing 3.

[0052] In this embodiment, the drive motor 45 is a dual-head motor. The first output end of the output shaft 451 of the drive motor 45 is connected to the cooling fan blade 44, and the second output end of the output shaft 451 of the drive motor 45 is connected to the axial fan 43. With this configuration, the axial fan 43 and the cooling fan blade 44 can be driven by a single drive motor 45, ensuring the effective operation of the condenser 42 and the evaporator 41 while reducing the number of parts, lowering costs, and reducing potential points of failure.

[0053] In some embodiments of this application, reference is made to Figure 3 The refrigeration module 4 may include a compressor 46. The compressor 46 is disposed within the second cavity 16.

[0054] The refrigeration module 4 may include a throttling device, and the compressor 46, condenser 42, throttling device, and evaporator 41 are connected in a cyclic manner. The elevator air conditioner 100 performs a refrigeration cycle by using the compressor 46, condenser 42, throttling device, and evaporator 41. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0055] Compressor 46 compresses the refrigerant gas at low temperature and low pressure, discharging it as refrigerant gas at high temperature and high pressure. The discharged refrigerant gas flows into condenser 42. Condenser 42 condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0056] The throttling device expands the high-temperature, high-pressure liquid refrigerant condensed in condenser 42 into a low-pressure liquid refrigerant. Evaporator 41 evaporates the refrigerant expanded in the throttling device and returns the low-temperature, low-pressure refrigerant gas to compressor 46. Evaporator 41 achieves a cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, elevator air conditioning 100 can lower the temperature inside the elevator.

[0057] In some embodiments of this application, reference is made to Figure 2 A condenser air inlet 13 is provided on the side wall of the second cavity 16. The condenser air inlet 13 is used for air intake when the condenser 42 is working. The condenser 42 is located close to the condenser air inlet 13 to reduce air intake resistance and reduce the power consumption of the axial fan 43.

[0058] A condenser air outlet 14 is provided on the side wall of the second cavity 16. The condenser air outlet 14 is used for air outlet when the condenser 42 is working. The condenser air inlet 13 and the condenser air outlet 14 can provide independent and directional cooling air channels for the condenser 42, thereby improving the heat exchange efficiency of the condenser 42.

[0059] The condenser outlet 14 can be a louvered through-hole, a honeycomb through-hole, or a through-hole composed of multiple rectangles, which can prevent foreign objects from entering and reduce air noise, taking into account both aesthetics and strength.

[0060] It should be noted that the structure of the refrigeration module 4 in this utility model adopts the simplest refrigeration module 4 structure to constitute the refrigeration system of the elevator air conditioner 100 in this utility model embodiment. In specific implementation, adaptive changes can be made according to the refrigeration system under the existing technology, such as adding components such as a dryer filter and a liquid receiver.

[0061] In some embodiments of this application, the elevator air conditioner 100 may include a water collection tray, which is installed at the bottom of the housing 1 to facilitate the natural flow of condensate.

[0062] refer to Figure 5 The drip tray contains a drip trough 51 located below the evaporator 41 and condenser 42, used to collect condensate generated during the operation of the elevator air conditioner 100. Condensate dripping from the surfaces of the evaporator 41 and condenser 42 is directly deposited into the same drip trough 51 by gravity, eliminating the need for additional guide pipes, resulting in a very simple structure and no risk of leakage.

[0063] In related technologies, the drainage methods for condensate from elevator air conditioners 100 are mostly single-method drainage, and different drainage methods have different drawbacks. These drainage methods include manual drainage, installation of drain pipes, fan water pumping, and water pump 71 pumping.

[0064] 1. Manual drainage requires stopping the elevator, which is labor-intensive and increases elevator downtime. 2. The narrow space in the elevator shaft restricts pipe routing and complicates installation. Long-term vibration can cause pipes to loosen or break, making maintenance difficult and posing a risk of leakage. 3. High-speed fan operation generates significant noise, resulting in a poor passenger experience. 4. Condensate contains dust and oil, easily clogging water pump 71 and nozzles. Therefore, relying solely on water pump 71 for drainage can easily lead to malfunction. If water pump 71 fails, condensate will overflow rapidly, requiring shutdown for repair and affecting the reliability of the elevator air conditioning system 100.

[0065] To address the aforementioned technical issues, in some embodiments of this application, the elevator air conditioner 100 integrates two condensate evaporation paths: "water pump 71 extraction" and "water wheel pumping." It also achieves intelligent switching and redundancy protection through water level detection, enabling drainage redundancy and ensuring that the system can operate without shutting down or overflowing even if the water pump 71 fails.

[0066] Specifically, the elevator air conditioner 100 may include a water level detection device, which is installed on the water receiving tray and used to detect the water level in the water receiving tank 51. The water level monitoring device is used to monitor at least two water levels, "preset low water level" and "preset high water level", which can fully meet the switching of three operating conditions.

[0067] refer to Figure 3 The elevator air conditioner 100 may include a water pump assembly 7, which is used to draw condensate from the water tank 51 to the condenser 42 for evaporation. In this embodiment, the waste heat of the condenser 42 is used to evaporate the condensate, which can achieve zero discharge of condensate and improve cooling efficiency.

[0068] refer to Figure 7 The water pump assembly 7 includes a water pump 71, which is configured to start or stop according to the water level in the water tank 51 to avoid dry running, extend the life of the water pump 71, and reduce energy consumption.

[0069] Specifically, when the water level detection device detects that the water level in the water receiving tank 51 has reached the preset low water level, the water pump 71 starts to draw condensate water to the condenser 42 for evaporation. When the water level detection device detects that the water level in the water receiving tank 51 is lower than the preset low water level, the water pump 71 stops to stop drawing condensate water.

[0070] refer to Figure 6 The elevator air conditioner 100 may include a water pump 8, which is installed on the outer edge of the axial fan 43. The bottom of the water pump 8 is not lower than the preset high water level of the water tank 51, ensuring that the water pump 8 can contact the water surface to perform water pumping and evaporation operations when the preset high water level is reached.

[0071] When the water level detection device detects that the water level in the water receiving tank 51 has reached the preset high water level, the axial flow fan 43 and the water pump 71 work together. The rotation of the axial flow fan 43 drives the water pumping wheel 8 to rotate, so as to pump water to the condenser 42 for evaporation.

[0072] Specifically, when the condensate reaches the preset low water level, only water pump 71 is activated, improving the level of automation, reducing the working time of water pump 71, and helping to reduce energy consumption. At this time, water pump 71 operates to transport condensate to the surface of condenser 42, operating quietly and with high energy efficiency.

[0073] When the condensate level drops below the preset low level, water pump 71 stops to prevent it from running dry. When the condensate level reaches the preset high level, water pump 71 continues to operate, while the impeller 8 on the outer edge of the axial fan 43 rotates at high speed, spraying excess condensate onto the condenser 42. This achieves parallel evaporation in both directions, improving the evaporation efficiency of the condensate, quickly lowering the preset low level, and preventing overflow.

[0074] In addition, when the water pump 71 is blocked or fails, it can be switched to the "fan pumping water alone" mode, which relies on the water pumping wheel 8 to continuously pump water for evaporation, avoiding the risk of condensate overflow, ensuring that the elevator air conditioner 100 does not need to be shut down or manually drained, and effectively ensuring the reliable operation of the elevator air conditioner 100.

[0075] In this embodiment, through the above-mentioned collaborative / redundant design of "water pump 71 + water impeller 8", the existing defects such as manual drainage, easy damage to drainage pipes, high noise caused by long-term operation of water impeller 8, and easy clogging of water pump 71 are completely eliminated while maintaining a compact structure and easy installation. This achieves zero discharge of condensate water from elevator air conditioner 100 and long-term reliable operation.

[0076] Continue to refer to Figure 7 The water pump assembly 7 may include a spray box 73, which is located above the condenser 42, so that the condensate water evenly wets all the fins from top to bottom, ensuring sufficient evaporation area.

[0077] The water pump assembly 7 may include a water supply pipe 72, which is connected between the water pump 71 and the spray box 73 to connect the water pump 71 and the spray box 73.

[0078] In this embodiment, the water pump assembly 7 sprays condensate onto the condenser 42 through the spray box 73, which not only absorbs the heat of the condenser 42, but also cleans the condenser 42, effectively improving the efficiency of the condenser 42.

[0079] In some embodiments of this application, the spray box 73 has a water storage cavity inside, and a plurality of spray holes 731 facing downward toward the condenser 42 are evenly distributed on the spray box 73.

[0080] In this embodiment, a number of evenly distributed spray holes 731 ensure that condensate is sprayed evenly onto the fins of the condenser 42, thereby improving the heat exchange efficiency and thus improving the cooling effect of the elevator air conditioner 100.

[0081] A plurality of spray holes 731 are arranged in at least one row along the length of the spray box 73. (Reference) Figure 13 For example, several spray holes 731 are arranged in 4 rows, which can quickly evaporate condensate.

[0082] In some embodiments of this application, the diameter of the spray hole 731 is d. Where d ≤ 5 mm and d ≥ 2 mm.

[0083] If the aperture d is greater than 5 mm, the water droplet size will be too large, causing the condensate sprayed onto the condenser 42 to drip off before it is fully evaporated, thus weakening the self-evaporation capacity of the condensate. Therefore, in order to improve the self-evaporation capacity of the condensate sprayed onto the condenser 42, the aperture of the spray hole 731 is set to be less than or equal to 5 mm.

[0084] If the orifice diameter d is less than 2mm, not only will the total amount of condensate sprayed be insufficient, leading to condensate accumulation in the drip tray, but the high dust content in the condensate will also cause the spray holes 731, smaller than 2mm, to easily become clogged, resulting in interrupted spraying and loss of the dual function of "cleaning + evaporation". Therefore, to avoid clogging of the spray holes 731 due to excessively small orifice diameter, the orifice diameter of the spray holes 731 is set to be greater than or equal to 2mm. In this embodiment, the spray hole 731 is set in a small hole diameter range of 2~5mm, which can effectively remove dust and evenly evaporate condensate, thereby improving the evaporation and drainage effect of condensate and the cleaning effect of condenser 42.

[0085] In some embodiments of this application, the spray box 73 has two clamping walls 732 extending toward the water receiving tray, with a clamping position formed between the two clamping walls 732. The clamping position is used for insertion of the top of the condenser 42. Continuing to refer to... Figure 13 The two clamping walls 732 abut against the two sides of the condenser 42 in the thickness direction, respectively.

[0086] In this embodiment, by setting two clamping walls 732, the spray box 73 can be directly snapped onto the top of the condenser 42, which simplifies the assembly process of the production line and reduces the difficulty of maintenance.

[0087] In other embodiments of this application, the elevator air conditioner 100 may include a water pump 71, which pumps out condensate from the water tank 51 when the water level in the water tank 51 reaches a preset low level. The elevator air conditioner 100 may include a water impeller 8, which is installed on the outer edge of the axial fan 43. When the water level in the water tank 51 reaches a preset high level, the axial fan 43 rotates to pump water to the condenser 42 for evaporation.

[0088] In some embodiments of this application, reference is made to Figure 9 The water receiving tray may include a first water receiving tray 5, and a water receiving trough 51 is formed inside the first water receiving tray 5. The first water receiving tray 5 forms the bottom end of the elevator air conditioner 100, and the first water receiving tray 5 is connected to the housing 1 to form the appearance of the elevator air conditioner 100.

[0089] The water receiving tray may include a second water receiving tray 6, which is disposed within the first water receiving tray 5. (See reference) Figure 6 The second water receiving tray 6 is used to provide mounting positions for components such as evaporator 41, condenser 42, drive motor 45, air duct housing 3, and partition 2.

[0090] refer to Figure 8 An overflow section 61 is provided on the second water receiving tray 6. The overflow section 61 is located between the axial fan 43 and the condenser 42, and the overflow section 61 connects the water receiving tank 51 and the second cavity 16. The condensate on the condenser 42 drips into the second water receiving tray 6, and flows into the water receiving tank 51 through the overflow section 61 for collection of condensate.

[0091] refer to Figure 9 The second water receiving tray 6 is provided with a through part 62, which connects the second cavity 16 and the water receiving tank 51. The water pump 71 is installed on the second water receiving tray 6, and the water inlet of the water pump 71 extends into the water receiving tank 51 through the through part 62.

[0092] In some embodiments of this application, a support portion 52 is provided on the side wall of the water receiving tank 51, and the support portion 52 is used to install the second water receiving tray 6. (See reference) Figure 10 , Figure 12 The bottom edge of the second water receiving tray 6 is supported on the support part 52.

[0093] In this embodiment, the water storage capacity of the water tank 51 is increased by the separately set first water receiving tray 5, which can meet the normal operation of the elevator air conditioner 100 in humid weather and avoid the risk of condensate overflow.

[0094] In some embodiments of this application, the evaporator 41, condenser 42, and partition 2 are mounted on the second water receiving tray 6. A gap 9 is formed between the side wall of the second water receiving tray 6 and the side wall of the water receiving trough 51, and the bottom end of the housing 1 is inserted into the gap 9. The housing 1 is detachably connected to the side walls of the second water receiving tray 6 and the first water receiving tray 5.

[0095] In this embodiment, the first water receiving tray 5 can be disassembled separately. In the event of a water pump 71 failure, the water pump 71 can be repaired without draining the condensate from the entire water receiving tank 51, thus shortening downtime. At the same time, the first water receiving tray 5 can be quickly and periodically disassembled and cleaned without disassembling the entire machine, preventing mud, dust, and other contaminants from clogging the water pump 71 or the spray nozzles 731, and ensuring the long-term stable operation of the elevator air conditioner 100.

[0096] In some embodiments of this application, the bottom surface of the water receiving tank 51 gradually decreases in the direction from the condenser 42 to the evaporator 41.

[0097] In other words, the bottom surface of the water collection tank 51 forms an acute angle with the axis of the axial fan 43, pointing towards the evaporator 41. This arrangement makes the bottom surface of the water collection tank 51 slope relative to the horizontal plane, allowing condensate to flow naturally along the slope to the lowest point below the evaporator 41, achieving condensate collection without the need for additional guide components.

[0098] refer to Figure 11 , Figure 12 The bottom of the water tank 51 is recessed downwards to form a recess 53, which corresponds to the water pump 71. In this embodiment, water is concentrated at the lowest point to ensure that the water pump 71 can promptly remove the condensate.

[0099] In some embodiments of this application, the bottom surface of the water receiving tank 51 is provided with a plurality of reinforcing ribs 9. The provision of reinforcing ribs 9 is beneficial to improving structural strength, preventing deformation of the thin bottom plate of the water receiving tank 51, and reducing material thickness and cost.

[0100] refer to Figure 10 Several reinforcing ribs 9 are arranged in a crisscross pattern along the axis of the axial fan 43 and its perpendicular direction, forming a grid-like rectangular array.

[0101] In this embodiment, by setting several reinforcing ribs 9 in a grid-like rectangular array, not only is the overall rigidity of the first water receiving tray 5 where the water receiving tank 51 is located improved, preventing warping and deformation during transportation or operation, but it can also intercept and filter large particles of mud and sand, avoid the water pump 71 from being sucked in and blocked, and extend the maintenance-free cycle.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0103] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. An elevator air conditioner, characterized in that, It includes: The housing includes a cold air outlet and a return air inlet; A partition is provided inside the housing to divide the internal space of the housing into a first cavity and a second cavity, and the return air vent and the cold air outlet are connected to the first cavity; An evaporator is located within the first cavity and is positioned near the return air vent. The condenser is located within the second cavity; An axial fan is disposed in the second cavity and located between the condenser and the partition plate, for blowing air onto the condenser; A water receiving tray is installed at the bottom of the housing, and a water receiving trough is defined inside the water receiving tray below the evaporator and the condenser; A water level detection device is installed on the water receiving tray to detect the water level in the water receiving tank; A water pump assembly for drawing condensate from the water tank to the condenser for evaporation, the water pump assembly including a water pump configured to start or stop according to the water level in the water tank; A water impeller is installed on the outer edge of the axial flow fan, and the bottom of the water impeller is not lower than the preset high water level of the water receiving tank. When the water level detection device detects that the water level in the water receiving tank has reached a preset low water level, the water pump starts to draw the condensate onto the condenser; when the water level detection device detects that the water level in the water receiving tank has reached a preset high water level, the axial fan and the water pump work together, and the rotation of the axial fan drives the water pumping wheel to rotate, so as to pump water onto the condenser for evaporation.

2. The elevator air conditioner according to claim 1, characterized in that, The water receiving tray includes: The first water receiving tray has the water receiving trough formed inside it, and a support part is provided on the side wall of the water receiving trough; The second water receiving tray has its bottom edge supported on the support part. The second water receiving tray is provided with an overflow part and a through part. The overflow part connects the water receiving tank and the second cavity. The water pump is installed on the second water receiving tray and its inlet extends into the water receiving tank through the through part.

3. The elevator air conditioner according to claim 2, characterized in that, The evaporator, the condenser, and the partition are mounted on the second water receiving tray. A gap is formed between the side wall of the second water receiving tray and the side wall of the water receiving trough. The bottom end of the housing is inserted into the gap. The housing is detachably connected to the side walls of the second water receiving tray and the first water receiving tray.

4. The elevator air conditioner according to claim 1, characterized in that, The bottom surface of the water receiving tank gradually decreases in the direction from the condenser to the evaporator.

5. The elevator air conditioner according to claim 1 or 4, characterized in that, The bottom surface of the water receiving tank is provided with several reinforcing ribs, which are arranged in a crisscross pattern along the axial direction of the axial fan and its perpendicular direction to form a grid-like rectangular array.

6. The elevator air conditioner according to claim 1, characterized in that, The water pump assembly also includes a water delivery pipe and a spray box, the spray box being located above the condenser, and the water delivery pipe connecting the water pump and the spray box.

7. The elevator air conditioner according to claim 6, characterized in that, The spray box has a water storage chamber inside, and a plurality of spray holes are evenly distributed on the spray box, pointing downward toward the condenser. The plurality of spray holes are arranged in at least one row along the length of the spray box.

8. The elevator air conditioner according to claim 7, characterized in that, The diameter of the spray hole is d, where d≤5mm and d≥2mm.

9. The elevator air conditioner according to claim 6, characterized in that, The spray box has two clamping walls extending toward the water receiving tray, and a clamping position for inserting the top of the condenser is formed between the two clamping walls. The two clamping walls abut against the two sides of the condenser in the thickness direction.

10. An elevator air conditioner, characterized in that, include: The housing includes a cold air outlet and a return air inlet; A partition is provided inside the housing to divide the internal space of the housing into a first cavity and a second cavity, and the return air vent and the cold air outlet are located on the side wall of the first cavity; An evaporator is located within the first cavity and is positioned near the return air vent. The condenser is located within the second cavity; An axial fan is disposed in the second cavity and located between the condenser and the partition plate, for blowing air onto the condenser; A water receiving tray is installed at the bottom of the housing, and a water receiving trough is defined inside the water receiving tray below the evaporator and the condenser; A water level detection device is installed on the water receiving tray to detect the water level in the water receiving tank; A water pump that, when the water level in the water receiving tank reaches or exceeds a preset low water level, removes the condensate from the water receiving tank. A water impeller is installed on the outer edge of the axial flow fan. When the water level in the water receiving tank reaches a preset high water level, the axial flow fan rotates to pump water to the condenser for evaporation.

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