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Method for detecting unbalance amount of front loading washing machine

A technology of a drum washing machine and a detection method, which is applied to other washing machines, washing devices, textiles and papermaking, etc., can solve the problems of increased washing machine vibration, noise and energy consumption, unreliable washing machine protection, and poor dehydration performance. Long, good precision control, improve the effect of accuracy

Active Publication Date: 2014-06-11
WUXI FILIN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the accuracy of this detection method is not high, and the measured unbalance value does not eliminate the influence of inertia, that is to say, it is only a relative unbalance amount.
The control program based on this is not reliable enough for the protection of the washing machine. For example, the actual unbalance is too large and it enters high-speed dehydration, which not only increases the vibration, noise and energy consumption of the washing machine, but also deteriorates the dehydration performance.

Method used

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  • Method for detecting unbalance amount of front loading washing machine
  • Method for detecting unbalance amount of front loading washing machine
  • Method for detecting unbalance amount of front loading washing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1, the case of an empty bucket (without balanced load) + 1000g of pure eccentric load 2, the specific load distribution is as follows image 3 :

[0036] set up ,set up , calculated according to the method of the present invention =101, w1=401617, w2=2318315, measured number of turns m=4, load moment of inertia J=62, finally obtained =93; Assume the design of a washing machine If it is not greater than 100, the current imbalance is in a controllable and reasonable range.

Embodiment 2

[0037] Example 2, 5.1kg balanced load 1+1000g pure eccentric load 2, the load distribution is as follows Figure 4 :

[0038] set up , , calculated to get =52, w1=641276, w2=4038294, measured number of turns m=4, load moment of inertia J=128, =99.

[0039] It can be seen from the above two examples that in the case of the same 1000g eccentricity, the difference between the unbalance data obtained under the condition of an empty bucket and a load of 5.1kg (5.1 load is a commonly used normal washing load) is very small, so It can more accurately reflect the unbalanced amount of the washing machine, and is less affected by the normal balanced load. Compared with the existing "relative unbalanced quantity", there is obvious progress.

[0040] It is easy to know that the above detection steps and calculation methods can be compiled into a program in the main controller; the final data It can be compared with the unbalance limit parameter set in advance according to the ...

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Abstract

The invention discloses an impeller for a washing machine. The impeller comprises a foundation and a plurality of blades arranged on the foundation; each blade comprises a blade vein and water splashing surfaces which have slope and are arranged on two sides; the impeller is characterized in that a conical table is arranged in the middle of the foundation; protruded stirring ribs of which the number is the same as that of the blades are arranged on the outer vertical face of the conical table and are smoothly connected to the corresponding blade veins; the water splashing surfaces of each blade have different slopes; each water splashing surface is provided with a concave surface and a convex surface; each blade vein is S-shaped according to the camber change of the concave surface and the convex surface of the corresponding water splashing surface; and moreover, the side-looking line of each blade vein is a continuous curve which is concave first and then convex from the center of the foundation to the outward direction. According to the impeller, each blade has a streamline shape of a propeller; each water splashing surface is smooth and mild, but the power is strong, and the washing capacity is excellent; meanwhile, middle rising water flow can be generated to scatter clothes, which are rotated to the center of a washing bucket, so that winding is effectively avoided; and damage to trend of water flow is reduced, so that the winding preventing capacity is further improved.

Description

technical field [0001] The invention relates to a control method of a drum washing machine, in particular to a method for detecting imbalance of a drum washing machine with high precision. Background technique [0002] The drum washing machine is more and more popular among consumers because of its advantages of energy saving, environmental protection, and little damage to clothes. However, due to the complex load situation of the drum washing machine, the problem of unbalanced load placement occurs frequently. The resulting problem is that the high-speed dehydration of the washing machine leads to high noise, large vibration, and high energy consumption. These not only affect the machine. Life expectancy, and serious damage to personal and property safety. Therefore, unbalance detection is a very important function on the drum washing machine, and high-precision unbalance measurement is one of the important means to improve the overall performance of the washing machine. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06F37/20G06F17/10
Inventor 陈定宙徐刚陈海兵刘宗贵
Owner WUXI FILIN ELECTRONICS CO LTD