Refrigerator drain pipe
By improving the structural design of the refrigerator drain pipe, and adopting a U-shaped flange and a V-shaped flare for drainage, the problems of poor sealing performance and low drainage efficiency were solved, achieving stable sealing and efficient drainage.
Patent Information
- Application Number
- CN202511344665.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2025-11-21
AI Technical Summary
Existing refrigerator drain pipes suffer from poor sealing performance, easy leakage, and low drainage efficiency, especially during long-term use and under vibration.
A refrigerator drain pipe was designed, comprising an inlet section, a transition section, and an outlet section. The inlet section has a U-shaped flange to increase the contact area and sealing performance. The transition section adopts a V-shaped flared design to optimize the water flow path. The outlet section achieves initial sealing through a tight insertion to avoid water accumulation and blockage.
It improves the sealing performance of the drain pipe, reduces the risk of leakage, ensures smooth and fast drainage, and provides a stable seal for long-term vibration environments.
Smart Images
Figure CN120991537A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of refrigerator equipment, in particular to a refrigerator drain pipe. BACKGROUND
[0002] In the use process of the refrigerator, condensate water will be generated inside the refrigerator, which needs to be discharged in time through the drain pipe to ensure the dryness and normal operation of the refrigerator interior, therefore, the drain pipe is an important component in the refrigerator.
[0003] Firstly, in terms of sealing performance, the connection part of the existing refrigerator drain pipe and the internal drainage system of the refrigerator is prone to water leakage. This is mainly because the interface design of the existing drain pipe is not reasonable enough, mostly adopting a simple cylindrical interface, the contact area between which and the matching component is small, and the sealing performance is poor. Moreover, the dimensional accuracy control of the interface is not strict enough, and dimensional deviation is prone to occur, leading to loose connection and water leakage. Especially in the long-term use process of the refrigerator, due to the influence of factors such as vibration, the sealing performance of the interface will further decrease, and the water leakage problem will be more prominent.
[0004] Secondly, in terms of drainage efficiency, the structural design of the existing refrigerator drain pipe has defects, the pipe diameter of some drain pipes is designed unreasonably, either too large to occupy too much space, or too small to affect the drainage speed; the bending angle of some drain pipes is designed improperly, and water is prone to accumulate at the bending part, even causing blockage, affecting the smoothness of drainage.
[0005] In view of the problems existing in the above-mentioned prior art, the refrigerator drain pipe needs to be further improved and optimized to improve its sealing performance and drainage efficiency, and meet the use requirements of the refrigerator. SUMMARY
[0006] The present application aims to provide a refrigerator drain pipe to solve the problem of low drainage efficiency of the existing refrigerator drain pipe.
[0007] A refrigerator drain pipe, comprising: a water inlet section, a transition section and a water outlet section connected in sequence; one end of the water inlet section is provided with an interface part, the interface part has a U-shaped flange, the flange comprises a horizontal section and an arc section, the angle between the arc section and the horizontal section is 66-68°; the transition section is in the shape of a V, comprising an outlet and an inlet with an expanded port shape, the outlet is inserted into the water outlet section, and the included angle of the two ends of the inlet is 31-32°.
[0008] Working principle and beneficial effects of the present application: The water inlet section seals the refrigerator drainage system, the transition section optimizes the water flow path, and the water outlet section completes the final drainage delivery. In the U-shaped flange, the horizontal section greatly increases the contact length with the refrigerator drainage port (compared to the existing cylindrical interface, the contact area is increased), and the sealing surface is expanded; the arc-shaped section is designed through an angle of 66-68°, so that the flange can closely fit the curved surface / matching component of the refrigerator drainage port, while dispersing the contact pressure and avoiding local stress concentration leading to sealing failure. The V-shaped flared inlet of the transition section guides the condensed water to quickly converge, avoiding water stagnation at the junction of the water inlet section and the transition section; the V-shaped side walls form a flow guide slope, forcing the water to flow along the slope to the outlet, eliminating the water accumulation dead angle at the bend. The transition section outlet is inserted into the water outlet section, forming a preliminary seal through tight insertion.
[0009] The core problem of poor sealing and easy water leakage of the existing technology interface is solved, the large contact area and angle adaptability of the U-shaped flange greatly improve the reliability of the interface sealing, and the interface can still be stably sealed in a long-term vibration environment, the risk of water leakage is reduced, the flared flow guide and slope design of the V-shaped transition section improve the drainage speed and completely avoid water accumulation at the bend, ensuring smooth drainage.
[0010] Preferably, the angle between the arc-shaped section and the horizontal section is 66°, and the included angle of the inlet two ends is 31°. The flange angle of 66° makes the bending curvature of the arc-shaped section adapt to the structure height of the common refrigerator drainage port, and the pressure distribution is most uniform when the sealing surface is fitted, without local gap; after the water flows out of the flange, it can slide into the transition section flared at an almost frictionless angle, reducing splashing and energy loss caused by water impact.
[0011] Preferably, the angle between the arc-shaped section and the horizontal section is 68°, and the included angle of the inlet two ends is 31.3°.
[0012] Preferably, the angle between the arc-shaped section and the horizontal section is 67°, and the included angle of the inlet two ends is 32°. It ensures sufficient sealing contact area and does not cause excessive bending resistance when the water flows out.
[0013] Preferably, the transition section has an external thread, and the water outlet section has an internal thread that cooperates with the external thread.
[0014] Preferably, the arc-shaped section extends above the inlet. After the arc-shaped section extends, a flow guide is formed at the end of the water inlet section; after the condensed water flows out of the interface part, it will directly slide to the top of the transition section inlet along the extended part of the arc-shaped section, and then fall into the flared part; the extended arc-shaped section can also block water droplets, preventing water from splashing into the interface sealing area.
[0015] Preferably, the water outlet section is provided with a sponge pad. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1is a top view of a refrigerator drain pipe; Figure 2 is Figure 1 a sectional view.
[0017] Reference signs include: arc segment 1, transition segment 2, water outlet segment 3, transverse segment 4. DETAILED DESCRIPTION
[0018] Further details are described below through specific embodiments: Referring to Figure 1 and Figure 2 , a refrigerator drain pipe comprises: a water inlet segment, a transition segment and a water outlet segment connected in sequence; one end of the water inlet segment is provided with an interface part, the interface part has a U-shaped flange, the flange includes a transverse segment and an arc segment, and the angle between the arc segment and the transverse segment is 66-68°; the transition segment is in the shape of a V, including an outlet and an inlet with a flared shape, the outlet is inserted into the water outlet segment, and the included angle at both ends of the inlet is 31-32°.
[0019] The following experimental groups are designed, see Table 1:
[0020] Through testing the sealing performance and the drainage speed, 3 samples are designed for each group, and the following data are obtained: Table 1-Sealing performance test
[0021] Table 3-Drainage speed and residual water data
[0022] From the analysis of Table 2 and Table 3, it can be seen that: 1. Influence of the presence or absence of the flange (Example 1, Control Group 2) Sealing performance: The critical sealing pressure of Control Group 2 (without flange) is only 11-13 kPa, which is 1 / 3.5 of Example 1 (41-43 kPa); The total amount of static water leakage is 27-37 times that of Example 1, and the leakage increment after vibration is 8-9 times that of Example 1; The absence of the U-shaped flange leads to a small interface contact area, concentrated sealing surface pressure, further expansion of the gap after vibration, and a dramatic increase in the risk of full-circle leakage.
[0023] 2. Drainage and residual: The drainage speed (10.04-10.27 mL / s) of the control group 2 is only 44% of that of example 1, and the residual water amount (289.5-298.6 mg) is 16 times of that of example 1; the reason is that no arc section guide is used, the water flows slowly along the straight port wall, and a dead water corner is formed at the joint between the interface part and the water inlet section. 3. Influence of the flange angle (example 1, control group 1) Sealing performance: the critical sealing pressure of the control group 1 (flange 90°) is 23-25 kPa, which is 56% of that of example 1 (68°); the total amount of static water leakage is 7-9 times of that of example 1; the reason is that the 90° flange angle leads to poor fit of the arc section and the curved surface of the drainage port (the pressure is concentrated in a local part), and the 68° flange can evenly disperse the contact pressure without local gap. 4. Drainage and residual water The drainage speed (13.81-14.05 mL / s) of the control group 1 is 60% of that of example 1, and the residual water amount (89.3-92.5 mg) is 5 times of that of example 1; the reason is that the 90° flange cannot form an effective guide, and the water flow is easy to hit the transition section wall after flowing out of the flange, and the 66° inlet angle leads to water flow dispersion and vortex water accumulation. 5. Influence of the inlet angle (example 1, control group 3) Sealing performance: there is little difference between the two groups (critical pressure 39-41 kPa, 41-43 kPa), which indicates that the inlet angle has no direct effect on sealing; drainage and residual water: the drainage speed (14.49-14.79 mL / s) of the control group 3 (inlet 66°) is 64% of that of example 1 (31.3°), and the residual water amount (80.3-84.1 mg) is 4.5 times of that of example 1; the reason is that the 31.3° inlet angle forms a narrow V-shaped guide slope, forcing the water flow to concentrate and accelerate; the 66° inlet angle is too wide, the water flow is dispersed and merged, and part of it flows back along the wall to form a dead corner.
[0024] The above is only an embodiment of the present application, and well-known specific technical solutions and / or common knowledge of characteristics in the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the patent. The protection scope claimed in this application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.
Claims
1. A refrigerator drain pipe, characterized in that, include: The system comprises an inlet section, a transition section, and an outlet section connected in sequence. One end of the inlet section is provided with an interface portion, which has a U-shaped flange. The flange includes a transverse section and an arc-shaped section, with an angle of 66 to 68° between the arc-shaped section and the transverse section. The transition section is V-shaped and includes an outlet and an inlet with a flared shape. The outlet is inserted into the outlet section, and the included angle between the two ends of the inlet is 31 to 32°.
2. The refrigerator drain pipe according to claim 1, characterized in that, The angle between the arc segment and the transverse segment is 66°, and the included angle between the two ends of the inlet is 31°.
3. The refrigerator drain pipe according to claim 2, characterized in that, The angle between the arc segment and the transverse segment is 68°, and the included angle between the two ends of the inlet is 31.3°.
4. The refrigerator drain pipe according to claim 3, characterized in that, The angle between the arc segment and the transverse segment is 67°, and the included angle between the two ends of the inlet is 32°.
5. The refrigerator drain pipe according to claim 4, characterized in that, The transition section has an external thread, and the water outlet section has an internal thread that mates with the external thread.
6. The refrigerator drain pipe according to claim 5, characterized in that, The curved segment bends and extends above the inlet.
7. The refrigerator drain pipe according to claim 6, characterized in that, The water outlet section is equipped with a sponge pad.