热水器、水泵组件及其降噪装置
By using a dot-matrix distributed elastic convex hull and circumferential limiting ridge structure of the fixed seat in the water pump assembly, the water pump vibration is damped and suppressed, and low-frequency noise is absorbed, thus solving the problem of low-frequency vibration noise of the water pump in gas water heaters and achieving efficient noise reduction and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-17
AI Technical Summary
In existing gas water heaters, the low-frequency vibration noise generated by the water pump during high-speed operation has limited effect in reducing resonance noise through rubber damping pads, and noise reduction methods need to be improved.
The fixed seat uses a matrix of elastic protrusions on the bottom wall of the enclosed cavity, which, together with the elastic limiting ridges distributed circumferentially on the side wall, dampens and suppresses the vibration of the water pump in the enclosed cavity. The elastic protrusions and limiting ridges also reduce the contact area and absorb low-frequency vibration noise.
It effectively reduces the operating noise of the water pump assembly and water heater, reduces friction noise, improves installation stability, and reduces the amplitude of vibration transmitted from the water pump assembly to the mounting base and water heater.
Smart Images
Figure CN224515494U_ABST
Abstract
Claims
1. A noise reduction device for a water pump assembly, comprising: include: The mounting base is constructed as a compressible elastomer. The mounting base forms a cavity for wrapping the bottom of the water pump. The cavity includes a bottom wall and a side wall. The bottom wall is provided with a plurality of elastic protrusions arranged in a dot matrix. The side wall is provided with a plurality of elastic limiting ridges arranged at intervals along the circumference. The elastic protrusions are used to form point contact with the water pump. The elastic limiting ridges are used to make an interference fit with the water pump. Mounting base, the fixing seat is disposed on the mounting base.
2. The noise reduction apparatus of a water pump assembly according to claim 1, wherein The two adjacent elastic convex hulls are spaced apart, and the outer wall of the elastic convex hull forms a reflective wall for reflecting sound waves.
3. The noise reduction apparatus of a water pump assembly according to claim 1, wherein The fixed base, the elastic protrusion, and the elastic limiting ridge are integrally formed.
4. The noise reduction apparatus of a water pump assembly according to claim 1, wherein The outer diameter of the elastic convex bulge is D1, 3mm≤D1≤8mm; the outer diameter of the elastic limiting rib is D2, 8mm≤D2≤15mm.
5. The noise reduction apparatus of a water pump assembly according to claim 1, wherein The fixed base and the mounting base form a buffer air cavity, and the fixed base has a connecting hole, through which the enclosing cavity communicates with the buffer air cavity.
6. The noise reduction apparatus of a water pump assembly according to claim 5, wherein The fixed base has an exhaust groove at one end near the mounting base. The enclosed cavity is connected to the exhaust groove through the connecting hole. The mounting base seals the opening side of the exhaust groove to form the buffer air cavity.
7. The noise reduction apparatus of a water pump assembly according to claim 5, wherein The wrapping cavity, the connecting hole, and the buffer air cavity are coaxially connected, and the inner diameter of the buffer air cavity is larger than the inner diameter of the wrapping cavity, while the inner diameter of the connecting hole is smaller than the inner diameter of the wrapping cavity.
8. The noise reduction apparatus of a water pump assembly according to claim 7, wherein The inner diameter of the buffer air chamber is D3, the inner diameter of the wrapping cavity is D4, and the inner diameter of the connecting hole is D5. D3, D4, and D5 satisfy: D3 = D4 + 10mm, 5mm ≤ D5 ≤ 10mm.
9. The noise reduction apparatus of a water pump assembly according to claim 5, wherein The depth of the encapsulation cavity is H1, 20mm≤H1≤50mm; the depth of the buffer air cavity is H2, 5mm≤H2≤10mm.
10. The noise reduction device of a water pump assembly according to any one of claims 1 to 9, characterized in that, The side wall of the fixing seat is provided with a wire passage groove, which communicates with the packaging cavity.
11. A water pump assembly characterized by, include: Water pump; The noise reduction device according to any one of claims 1 to 10, wherein the bottom of the water pump is mounted in the enclosed cavity.
12. A water heater, characterized by It includes a water heater body and a water pump assembly as described in claim 11, wherein the water pump assembly is mounted on the water heater body via the mounting base.