Anti-overflow draining pump structure for duct type air conditioner

Abstract

The utility model discloses an anti-overflow draining pump structure for a duct type air conditioner, and belongs to the technical field of air conditioning equipment. The structure comprises a water tank shell and a detachably-connected drainage pump body, a water inlet is formed in the lower portion of the water tank shell to receive condensate water, and an upper drainage opening is formed in the upper portion of the water tank shell to serve as an emergency overflow channel. A liquid level sensor is arranged at the bottom end of the pump body to monitor the water level in real time, and a pump water outlet and a gradienter are arranged at the top end of the pump body. When the drainage pump breaks down, the water level rises to the upper drainage port and then is directionally drained through the water outlet pipe, and ceiling soaking is avoided; the buckle type connecting structure simplifies maintenance operation, and the sealing ring and the damping washer are matched to ensure sealing performance and operation stability. The design solves the problems that overflow detection of a traditional drainage pump lags behind, and disassembly and assembly are complex.

Description

Technical Field

[0001] This utility model relates to the field of drainage technology for duct air conditioners, and more specifically, to a structure for an anti-overflow drainage pump for duct air conditioners. Background Technology

[0002] In traditional ducted air conditioning systems, condensate drains naturally by gravity. However, under certain installation conditions, such as in high-rise buildings or basements, gravity drainage may be limited. In these situations, ducted air conditioning systems with built-in drain pumps play a crucial role. The drain pumps actively extract the condensate and discharge it to a suitable location, thereby ensuring the normal operation of the system.

[0003] Patent CN 216131985 U discloses a duct air conditioner with a freely combinable drainage pump, including a duct air conditioner body and a water system assembly. The duct air conditioner body has a drainage pump mounting hole on its side wall to prevent water from being held in place by the pump. Multiple screw holes are evenly distributed around the drainage pump mounting hole. The water system assembly includes a water system and a pump mounting plate, which is fixedly connected to the side plate of the drainage pump to fix the pump to one side of the duct air conditioner. The drainage pump mounting plate has a drainage hole and multiple fixing holes, and is fixed to the duct air conditioner body with screws. The drainage pump's inlet pipe is connected to a water receiving tray inside the duct air conditioner body, and the drainage pipe extends through the drainage hole and connects to the outside of the duct air conditioner body. This invention improves the structure of the duct air conditioner, enabling free combination of the drainage pump and the duct air conditioner itself. This improves the versatility of the duct air conditioner model and solves the problem of difficult disassembly of the drainage pump during maintenance, significantly reducing the maintenance cost of the duct air conditioner.

[0004] Although the aforementioned ducted air conditioner and drainage pump can be freely combined, disassembly requires tightening multiple sets of screws. The drainage pump of the ducted air conditioner is usually located inside the ceiling, making operation very inconvenient. Furthermore, if the drainage pump breaks down, water will continuously enter through the inlet until it overflows and soaks the ceiling before the user realizes that the drainage pump is broken. This is extremely inefficient and can easily cause damage.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0006] In view of the problems in the related technologies, this utility model proposes an anti-overflow drainage pump structure for duct air conditioners to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] An overflow prevention and drainage pump structure for a duct air conditioner includes a water tank housing, a drainage pump body installed on the top of the water tank housing, a water inlet at the lower inner end of the water tank housing, an upper drainage outlet at the upper inner end of the water tank housing, a clamping plate fixedly connected to the upper end of the water tank housing, a clamping block fixedly connected to the outer side of the drainage pump body, a liquid level sensor installed at the bottom end of the drainage pump body, and a water outlet pipe installed on the outer side of the upper drainage outlet of the drainage pump body.

[0009] As a further embodiment of this utility model, a sealing ring is installed between the water tank housing and the drainage pump body.

[0010] As a further embodiment of this utility model, a fixing lug is fixedly connected to the outer side of the water tank shell, and a vibration damping washer is provided on the outer side of the fixing lug.

[0011] As a further embodiment of this utility model, a soundproof cover is attached to the outside of the water tank shell.

[0012] As a further embodiment of this utility model, the card plate and the card block engage with each other, and both the card plate and the card block are provided with 4 sets.

[0013] As a further embodiment of this utility model, a pump drain outlet is fixedly installed at the top of the pump body, and a level is fixedly installed at the top of the pump body, with three sets of levels.

[0014] As a further embodiment of this utility model, a suction head is fixedly installed at the center of the bottom end of the drainage pump body, and a filter is installed at the bottom end of the suction head.

[0015] The beneficial effects of this utility model are as follows:

[0016] In this utility model, the upper drain outlet is located at the upper end of the inner side of the water tank shell, forming a dual channel with the pump drain outlet of the drainage pump body; during normal operation, the liquid level sensor triggers the drainage pump to actively drain water; when the pump body fails, the water level reaches the height of the upper drain outlet and automatically overflows to the maintenance port through the water outlet pipe, realizing immediate fault alarm and overflow protection, and completely avoiding the problem of ceiling water leakage caused by pump failure.

[0017] In this utility model, the pump body of the drainage pump and the water tank housing are quickly installed and separated by the engagement of four sets of symmetrically distributed card plates and card blocks, combined with the elastic deformation of the sealing ring. Compared with the traditional screw fixing method, disassembly and assembly can be completed without tools during maintenance, which is especially suitable for high-altitude or confined space operations, thus improving maintenance efficiency.

[0018] The liquid level sensor in this device is integrated into the bottom of the drainage pump body to accurately control the water level when starting and stopping, avoiding energy consumption and wear caused by frequent pump start-up. The sound insulation cover attached to the outside of the water tank shell is made of porous sound-absorbing material. Combined with the vibration damping pads at the fixing ears, the pump operating noise can be reduced to below 35dB to meet the requirements of a quiet environment.

[0019] The level in this device displays the tilt of the drain pump in real time, ensuring that the suction head is always at the optimal working angle; the filter at the bottom of the suction head can intercept impurities ≥0.5mm to prevent pipe blockage; the mounting ears support multi-directional mounting holes to adapt to the spatial layout of different duct air conditioners. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an exploded view of the overall structure of an anti-overflow drainage pump for a duct air conditioner according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the external overall structure of an anti-overflow drainage pump structure for a duct air conditioner according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the overall structure of the water tank housing of an anti-overflow drainage pump structure for a duct air conditioner according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the overall structure of a drainage pump body for an anti-overflow drainage pump structure for a duct air conditioner according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the installation structure of the sealing ring and vibration damping washer of an anti-overflow drainage pump structure for a duct air conditioner according to an embodiment of the present utility model.

[0026] In the picture:

[0027] 1. Water tank housing; 2. Drain pump body; 3. Sealing ring; 4. Soundproof cover; 5. Fixing lug; 6. Water inlet; 7. Upper drain outlet; 8. Clamping plate; 9. Clamping block; 10. Pump drain outlet; 11. Level; 12. Suction head; 13. Liquid level sensor; 14. Water outlet pipe; 15. Vibration damping washer. Detailed Implementation

[0028] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0029] According to an embodiment of the present invention, an anti-overflow drainage pump structure for duct air conditioners is provided.

[0030] Please refer to the instruction manual appendix. Figure 1-5 According to an embodiment of the present invention, an anti-overflow drainage pump structure for a duct air conditioner includes a water tank housing 1, a drainage pump body 2 installed on the upper part of the water tank housing 1, a water inlet 6 provided at the lower inner end of the water tank housing 1, an upper drain outlet 7 provided at the upper inner end of the water tank housing 1, a clamping plate 8 fixedly connected to the upper end of the water tank housing 1, a clamping block 9 fixedly connected to the outer side of the drainage pump body 2, a liquid level sensor 13 installed at the bottom end of the drainage pump body 2, and a water outlet pipe 14 installed on the outer side of the upper drain outlet 7 of the drainage pump body 2.

[0031] The water tank shell 1 serves as a water storage container, with its lower inlet 6 receiving condensate and its upper drain 7 providing an emergency overflow path. The drain pump body 2 is quickly assembled and disassembled via a clamping plate 8 and a clamping block 9. The liquid level sensor 13 controls active drainage, and the outlet pipe 14 outside the upper drain ensures directional discharge of overflow. This structure forms a dual protection system of active drainage and passive overflow prevention.

[0032] In one embodiment, please refer to the appendix to the specification. Figure 1-5 As a further embodiment of this utility model, a sealing ring 3 is installed between the water tank housing 1 and the drainage pump body 2.

[0033] The sealing ring 3 is further defined. It is installed on the mating surface between the water tank housing 1 and the drainage pump body 2. It is made of silicone rubber and undergoes compression deformation when the buckle is locked to eliminate gaps and prevent water vapor leakage, while reducing the transmission of pump body vibration.

[0034] In one embodiment, please refer to the appendix to the specification. Figure 1-5 As a further embodiment of this utility model, a fixing ear 5 is fixedly connected to the outer side of the water tank shell 1, and a vibration damping washer 15 is provided on the outer side of the fixing ear 5.

[0035] The fixing ears 5 are located on both sides of the water tank shell 1 and are connected to the air duct frame by bolts; the vibration damping washer 15 is made of rubber and is fitted into the mounting hole of the fixing ears 5 to absorb the high-frequency vibration of the pump body during operation and prevent structural loosening caused by resonance.

[0036] In one embodiment, please refer to the appendix to the specification. Figure 1-5 As a further embodiment of this utility model, a soundproof cover 4 is attached to the outer side of the water tank shell 1.

[0037] The soundproof cover 4 is a U-shaped cover made of EPDM foam material. It is covered on the outer surface of the water tank shell 1 by adhesive backing, which blocks the sound of water flow and pump noise from spreading outward, and the noise reduction effect can reach 8-10dB.

[0038] In one embodiment, please refer to the appendix to the specification. Figure 1-5 As a further embodiment of this utility model, the card plate 8 and the card block 9 are engaged, and both the card plate 8 and the card block 9 are provided with 4 sets.

[0039] Four sets of clamping plates 8 and clamping blocks 9 are arranged in a cross-shaped symmetrical distribution. The clamping plates are L-shaped metal sheets, and the clamping blocks are matching barbed structures. This layout ensures that the pump body is subjected to uniform force, and locking / releasing can be completed by applying a force of ≥5kg on one side, while withstanding an axial tensile force of ≥30kg.

[0040] In one embodiment, please refer to the appendix to the specification. Figure 1-5 As a further embodiment of this utility model, a pump drain outlet 10 is fixedly installed at the top of the pump body 2 of the drainage pump, and a level 11 is fixedly installed at the top of the pump body 2 of the drainage pump, wherein the level 11 is provided with 3 sets.

[0041] The pump drain outlet 10 is a standard G3 / 4 threaded interface, and the level 11 is an embedded bubble level, used to calibrate the pump body installation posture, ensure that the suction head 12 is perpendicular to the water surface, and improve the pumping efficiency.

[0042] In one embodiment, please refer to the appendix to the specification. Figure 1-5 As a further embodiment of this utility model, a suction head 12 is fixedly installed at the center of the bottom end of the drainage pump body 2, and a filter is installed at the bottom end of the suction head 12.

[0043] The suction head 12 has a conical mesh structure, and the bottom filter uses a 304 stainless steel filter screen (mesh count ≥ 80), which can separate algae, dust and other particles in the water, avoid pump cavity blockage, and extend service life to more than 5 years.

[0044] Example 1: Overflow prevention and drainage process

[0045] like Figure 3 As shown, condensate enters the inner cavity of the water tank housing 1 through the inlet 6. When the water level reaches the preset height of the level sensor 13, the drain pump 2 starts, drawing water through the suction head 12 and discharging it through the pump drain outlet 10. If a pump malfunction causes the water level to continue rising, the water flows along the upper drain outlet 7 into the outlet pipe 14 and is discharged in a directed manner to the maintenance port (such as a water collection tank or alarm device), triggering an overflow alarm.

[0046] Example 2: Quick assembly / disassembly operation

[0047] like Figure 1 , Figure 5 As shown, when replacing the drainage pump body 2, pull the locking block 9 outward to disengage it from the locking plate 8, and then lift the pump body upward to complete the disassembly. When installing the new pump body, align the locking block 9 with the groove of the locking plate 8 and press it down; the sealing ring 3 will deform under pressure to achieve a seal. The entire process takes ≤2 minutes and does not require disassembly of the main structure of the duct unit.

[0048] Workflow Description

[0049] Normal drainage stage

[0050] Condensate flows into the bottom of the water tank housing 1 through the inlet 6. When the level sensor 13 detects that the water level has reached the threshold (e.g., 20mm), the drain pump 2 starts, and the suction head 12 draws water to the pump drain outlet 10 for discharge. The pump stops after the water level drops to the low threshold, and the cycle continues.

[0051] Fault emergency phase

[0052] A pump malfunction caused the water level to rise continuously to the height of the upper drain outlet 7 (e.g., 50mm). The water flowed into the outlet pipe 14 through the upper drain outlet 7, triggering an external audible and visual alarm. Maintenance personnel quickly replaced the pump body and reset the system using the snap-fit ​​structure.

[0053] Maintenance and testing phase

[0054] Regularly check the level 11 to ensure that the pump body is installed horizontally with an error of less than 1°, clean the impurities from the suction head 12 filter, replace the aged sealing ring 3, and assess whether the equipment vibration is abnormal by checking the condition of the vibration damping washer 15.

[0055] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A structure for an overflow-proof drainage pump for a ducted air conditioner, comprising a water tank housing (1), characterized in that: A drain pump body (2) is installed on the top of the water tank housing (1). A water inlet (6) is provided at the lower inner side of the water tank housing (1). An upper drain outlet (7) is provided at the upper inner side of the water tank housing (1). A clamping plate (8) is fixedly connected to the upper end of the water tank housing (1). A clamping block (9) is fixedly connected to the outer side of the drain pump body (2). A liquid level sensor (13) is installed at the bottom of the drain pump body (2). A water outlet pipe (14) is installed on the outer side of the upper drain outlet (7) of the drain pump body (2).

2. The anti-overflow drainage pump structure for ducted air conditioners according to claim 1, characterized in that: A sealing ring (3) is installed between the water tank housing (1) and the drainage pump body (2).

3. The overflow drainage pump structure for a ducted air conditioner according to claim 1, characterized in that: The outer side of the water tank shell (1) is fixedly connected with a fixing ear (5), and the outer side of the fixing ear (5) is provided with a vibration damping washer (15).

4. The overflow drainage pump structure for a ducted air conditioner according to claim 1, characterized in that: A soundproof cover (4) is attached to the outside of the water tank shell (1).

5. The overflow drainage pump structure for a ducted air conditioner according to claim 1, characterized in that: The card plate (8) and the card block (9) engage with each other, and both the card plate (8) and the card block (9) are provided with 4 sets.

6. The overflow drainage pump structure for a ducted air conditioner according to claim 1, characterized in that: The top of the drainage pump body (2) is fixedly installed with a pump drain outlet (10), and the top of the drainage pump body (2) is fixedly installed with a level (11), which has 3 sets.

7. The anti-overflow drainage pump structure for ducted air conditioners according to claim 1, characterized in that: A suction head (12) is fixedly installed at the center of the bottom end of the drainage pump body (2), and a filter is installed at the bottom end of the suction head (12).

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