A floor drain device for internal drainage of air conditioning units
By designing a floor drain device inside the air conditioning unit, the problem of difficult sewage discharge is solved, enabling convenient drainage and preventing condensation, ensuring stable unit performance, and making it particularly suitable for special environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG JIRONG AIR CONDITIONING CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-26
AI Technical Summary
The wastewater generated during the cleaning process of existing air conditioning units is difficult to discharge effectively, resulting in difficult operation, long time consumption, and easy suction into the unit's base plate, affecting the insulation layer's performance. In particular, it may cause condensation problems under special environments.
Design a floor drain device for internal drainage of an air conditioning unit, including a small water tank assembly, a water collection tray assembly, and a floor drain cover assembly. The drain pipe is connected by full welding and fixed with sealant to ensure that the drain pipe fits tightly with the base plate. When needed, the internal threaded pipe cap can be unscrewed to drain sewage. The water collection tray is welded to the base plate of the unit as one piece, and the cover assembly does not occupy space.
It enables convenient discharge of wastewater, avoids water accumulation inside the machine, maintains the performance of the unit without damage, is suitable for use in low-temperature environments, and prevents condensation.
Smart Images

Figure CN224284926U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioning unit drainage technology, and in particular to a floor drain device for internal drainage of air conditioning units. Background Technology
[0002] In the air conditioning unit industry, wastewater generated during internal unit cleaning needs to be drained; drainage is also necessary when heat exchange equipment such as surface coolers and evaporators experience water drift or condensate pan overflow onto the base plate; and drainage is required for outdoor air conditioning units where rainwater is drawn into the fresh air section due to inadequate rain protection. This is particularly true in special environments like cigarette factories, where internal cleaning of components such as cartridge filters, heat exchangers, and fans is frequent. If the base plate of the unit is not designed with drainage in mind, the wastewater generated during cleaning must be manually drained, which is difficult and time-consuming. Prolonged operation can lead to wastewater being drawn into the base plate insulation layer and flowing outside. Over time, this water absorption can cause the insulation to fail, resulting in condensation on the lower base plate of the air conditioning unit, severely impacting the production of the serviced units. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a floor drain device for internal drainage of air conditioning units.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A floor drain device for internal drainage of an air conditioning unit includes an air conditioning base plate and a floor drain body installed on the air conditioning base plate. The floor drain body is mainly composed of a small water tank assembly, a water collection tray assembly, and a floor drain cover assembly. The small water tank assembly is mainly composed of a small water tank, a drain pipe, an internally threaded pipe cap, and insulation material. The water collection tray assembly is mainly composed of a water collection tray and a water outlet pipe. The floor drain cover assembly is mainly composed of a cover plate and a handle.
[0006] Preferably, the small water tank is made of steel bent into shape and connected to the steel drain pipe by full welding. The top of the small water tank has a flange with holes. During installation, the flange surface is coated with sealant, and it is tightly attached to the air conditioner base plate and fastened with rivets. The outside of the small water tank is provided with heat insulation material. The internal thread cap installed at the lower end of the drain pipe is normally closed and is unscrewed when drainage is required.
[0007] Preferably, the water collection tray is made of steel bent into shape, with the bent part fully welded, and is connected to the steel water outlet pipe by full welding. The top of the water collection tray is flanged, and the flanged surface is in close contact with the upper base plate of the unit. The four sides are fully welded together.
[0008] Preferably, the drain cover assembly is made of steel with flanged edges on all four sides, and small holes are punched on the front of the cover, with the holes evenly distributed. A handle is installed in the middle of the cover facing upwards.
[0009] Compared with the prior art, the advantages of this utility model are as follows:
[0010] 1. The small water tank assembly is installed on the bottom plate of the unit. The drain pipe extends out of the unit through the through hole in the base of the unit. When needed, the internal threaded pipe cap can be unscrewed to discharge the sewage out of the machine, thus preventing the impact caused by water accumulation inside the machine.
[0011] 2. The water collection pan assembly is welded to the base plate of the unit as one piece. After the drain cover assembly is installed, it is flush with the base plate of the unit, which will not have a negative impact on maintenance, etc., and will not take up space or affect the performance of the unit.
[0012] 3. The entire exterior of this device is insulated to prevent condensation, making it particularly suitable for low-temperature environments inside the machine. Attached Figure Description
[0013] Figure 1 A schematic diagram of the structure of the floor drain device for internal drainage of the air conditioning unit installed on the base plate of the air conditioning unit;
[0014] Figure 2 This is a schematic diagram of a floor drain device for internal drainage of an air conditioning unit proposed in this utility model.
[0015] Figure 3 This is a schematic diagram of the small water tank component structure of a floor drain device for internal drainage of an air conditioning unit proposed in this utility model.
[0016] Figure 4 This is a first cross-sectional view of the small water tank component of a floor drain device for internal drainage of an air conditioning unit proposed in this utility model.
[0017] Figure 5 This is a second sectional view of the small water tank assembly of a floor drain device for internal drainage of an air conditioning unit proposed in this utility model.
[0018] Figure 6 This is a schematic diagram of the water collection tray assembly of a floor drain device for internal drainage of an air conditioning unit proposed in this utility model.
[0019] Figure 7 This is a schematic diagram of the drain cover assembly structure of a drain device for internal drainage of an air conditioning unit proposed in this utility model.
[0020] Figure 8 This is a bottom view of the drain cover assembly of a drain device for internal drainage of an air conditioning unit proposed in this utility model.
[0021] In the diagram: 1 Air conditioner base plate, 2 Floor drain body, 3 Small water tank assembly, 301 Drain pipe, 302 Small water tank, 303 Internal threaded pipe cap, 304 Insulation material, 4 Floor drain cover assembly, 401 Cover plate, 402 Handle, 5 Water collection tray assembly, 501 Water outlet pipe. Detailed Implementation
[0022] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0023] Reference Figure 1-8 A floor drain device for internal drainage of an air conditioning unit includes an air conditioning base plate 1 and a floor drain body 2 installed on the air conditioning base plate 1. The floor drain body 2 is characterized by comprising a small water trough assembly 3, a water collection tray assembly 5, and a floor drain cover assembly 4. The small water trough assembly 3 mainly consists of a small water trough 302, a drain pipe 301, an internally threaded pipe cap 303, and insulation material 304. The water collection tray assembly 5 mainly consists of a water collection tray 501 and a water outlet pipe 502. The floor drain cover assembly 4 mainly consists of a cover plate 401 and a handle 402. The small water trough 302 is made of bent steel and is fully welded to the steel drain pipe 301. The top of the small water trough 302 has a flanged edge with holes for installation. The flanged surface is coated with sealant and is tightly attached to the air conditioner base plate 1 and secured with rivets. The exterior of the small water tank 302 is provided with heat insulation material 304. The internal thread cap 303 installed at the lower end of the drain pipe 301 is normally closed. The internal thread cap 303 is unscrewed when drainage is required. The water collection tray 501 is made of steel bent into shape, with full welding at the bend. It is connected to the steel water outlet pipe 502 by full welding. The top of the water collection tray 501 is flanged, and the flanged surface is tightly attached to the upper base plate of the unit. The four sides are fully welded. The floor drain cover assembly 4 is made of steel with flanged edges on all four sides. Small holes are drilled on the front of the cover plate 401. The small holes are evenly distributed. At the same time, a handle 402 is installed in the middle position of the cover plate 401 facing upwards.
[0024] When this utility model is used, according to the actual needs of the air conditioning unit, such as in the fresh air section, intermediate section, and air supply section, a floor drain device for internal drainage of the air conditioning unit is set. Small water tank assembly 3 and water collection tray assembly 5 are installed at corresponding positions on the lower base plate, upper base plate, and longitudinal beam of the unit base, as well as through holes for the drain pipe 301 of the small water tank assembly 3. The small water tank assembly 3 is installed tightly against the lower base of the unit, the surface of the contact is coated with sealant, and it is fastened with rivets. After the installation is completed, the entire small water tank assembly 3 is covered with insulation material 304. The water collection tray assembly 5 is tightly attached to the upper base plate of the unit, and the four sides are fully welded. The floor drain cover assembly 4 is installed on the water collection tray assembly 5. When the air conditioning unit needs to drain, the internal threaded pipe cap 303 installed at the drain pipe 301 is unscrewed.
[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A floor drain device for internal drainage of an air conditioning unit, comprising an air conditioning base plate (1) and a floor drain body (2) installed on the air conditioning base plate (1), characterized in that, The main body (2) of the floor drain is mainly composed of a small water tank assembly (3), a water collection tray assembly (5), and a floor drain cover assembly (4). The small water tank assembly (3) is mainly composed of a small water tank (302), a drain pipe (301), an internal threaded pipe cap (303), and insulation material (304). The water collection tray assembly (5) is mainly composed of a water collection tray (501) and a water outlet pipe (502). The floor drain cover assembly (4) is mainly composed of a cover plate (401) and a handle (402).
2. The floor drain device for internal drainage of an air conditioning unit according to claim 1, characterized in that, The small water tank (302) is made of steel bent into shape and is connected to the steel drain pipe (301) by full welding. The top of the small water tank (302) is flanged and fitted with holes. When installing, the flanged surface is coated with sealant and is attached to the air conditioner base plate (1) and fastened with rivets. The exterior of the small water tank (302) is provided with heat insulation material (304). The internal thread cap (303) installed at the lower end of the drain pipe (301) is normally closed. The internal thread cap (303) is unscrewed when drainage is required.
3. A floor drain device for internal drainage of an air conditioning unit according to claim 2, characterized in that, The water collection tray (501) is made of steel bent into shape, with full welding at the bend, and is connected to the steel water outlet pipe (502) by full welding. The top of the water collection tray (501) is flanged, and the flanged surface is in close contact with the upper base plate of the unit. The four sides are connected by full welding.
4. A floor drain device for internal drainage of an air conditioning unit according to claim 3, characterized in that, The drain cover assembly (4) is made of steel with flanged edges on all four sides, and small holes are punched on the front of the cover (401). The small holes are evenly distributed, and a handle (402) is installed in the middle of the cover (401) facing upward.