CN101225596A

CN101225596A - Drying perception principle of washing machine

Info

Publication number: CN101225596A
Application number: CNA2008100189431A
Authority: CN
Inventors: 周国贤; 薛秀超
Original assignee: Nanjing LG Panda Appliance Co Ltd
Current assignee: Nanjing LG Panda Appliance Co Ltd
Priority date: 2008-02-01
Filing date: 2008-02-01
Publication date: 2008-07-23

Abstract

The invention relates to a washing machine drying sensing principle, which senses the temperature value of drying air through a plurality of temperature sensors arranged in a condensation pipe, judges the temperature difference and identifies dried cloth in the tube when the temperature difference reaches a certain value. The washing machine drying sensing principle is characterized in that: the sensing of temperature value of the drying air and the judging of the temperature difference are synchronous with the working procedures of a drainage pump; the temperature value is sensed and the temperature difference is judged when the drainage pump is working; when the drainage pump is shut down, temperature value sensing and temperature difference judging are not conducted. Through adopting the new washing machine drying sensing method, the washing machine drying sensing principle has the advantages that: temperature sensing and drainage pump working are synchronous; the drying degree and stability of automatic drying are greatly improved; the disturbing of residue water in the pipe is avoided; and the probability of wrong sensing is reduced.

Description

Drying perception principle of washing machine

Technical field

The present invention relates to a kind of oven dry cognitive method of washing machine, especially relate to a kind of drying perception principle of washing machine that improves washing machine oven dry degree and stability.

Background technology

Washing machine oven dry performance is a key factor that influences client's user satisfaction always.

Dry basic principle: by cold water the air that contains saturated steam is cooled off and condense.

In the prior art, in drying course, heated dry air enters washtub clothing is dried, when the hot and humid air after the oven dry passes through condenser pipe from bottom to top, the water inlet water valve that is positioned at the condenser pipe upper end is opened, and makes cold water with the flow direction opposite with hot and humid air, sprays downwards.The temperature of air is reduced, and saturated vapor condenses into the globule, flows in the bucket, discharges through pump (pump).After the air of supercooling heats through heater (heater), enter in the bucket, enter next circulation, proceed oven dry.

In drying procedure,, judge whether the clothing in the bucket is dry by the temperature value that a plurality of temperature sensors about the control condenser pipe perceive.When perceiving condenser pipe temperature contrast up and down when reaching certain value Δ T, then think barrel interior clothing drying.

In drying course, because the water that condensation is used finally flow back in the bucket along condenser pipe, and then discharge through draining pump (drain pump), because the work of draining pump (drain pump) has certain reality to move rate (work that is draining pump is intermittence), add draining pump when closing (drain pump off), the residual current in washing machine pump (pump) the inside return in the bucket, like this will continual residual a lot of water in pipe (tub).One of them temperature sensor that is used for perception oven dry degree just near residual water, therefore, can influence the perception of temperature sensor to actual temperature.And in the prior art, temperature sensor is judged the perception of temperature and is carried out all the time, as shown in Figure 1, with regard to causing easily the false sense of degree of drying is known like this, causes as not drying or excessive phenomenon such as oven dry.

Summary of the invention

For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of new cognitive method that passes through, improve washing machine the oven dry degree and the stable drying perception principle of washing machine of oven dry automatically.

For achieving the above object, the present invention is achieved by the following technical solutions:

A kind of drying perception principle of washing machine, by a plurality of temperature sensors about being located in the condenser pipe, the perception oven dry is carried out temperature contrast and is judged with the temperature value of air, when temperature contrast reaches certain value, is judged as barrel interior clothing drying; It is characterized in that the carrying out that described oven dry is judged with the temperature value perception and the temperature contrast of air, synchronous with the job step of draining pump, during draining pump work, carry out temperature value perception and temperature contrast and judge; When draining pump cuts out, do not carry out temperature value perception and temperature contrast and judge.

The invention has the beneficial effects as follows: the present invention is by new washing machine oven dry cognitive method, with temperature perception and the real together moving rate of draining pump, make all to improve a lot the oven dry degree and the stability of drying automatically, avoid the interference of residual water in the pipe, reduce the probability that false sense is known.

Description of drawings

Fig. 1 is perception principle figure of the prior art;

Fig. 2 is perception principle figure of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is carried out concrete introduction.

Fig. 2 is perception principle figure of the present invention.Because the work of draining pump has certain reality to move rate, work is intermittence, and when draining pump cut out, residual current returned in the bucket in the draining pump, form residual water in pipe, can influence the perception of temperature sensor.When draining pump is worked, there is not residual water in the bucket and in the pipe, the temperature perception suits to carry out.

The present invention utilizes this point to improve exactly.With the present perception of in drying course, carrying out temperature difference T always, be improved to and the mode of draining pump with real moving rate, promptly only when working, draining pump carries out the perception of Δ T, when cutting out, draining pump do not carry out the perception of Δ T, know because of ponding in the pipe too much causes the false sense of temperature sensor (Thermastor) with regard to having avoided like this, improved the oven dry degree and the stability of washing machine.

The foregoing description does not limit the present invention in any form, and all technical schemes that mode obtained of taking to be equal to replacement or equivalent transformation all drop in protection scope of the present invention.

Claims

1. drying perception principle of washing machine, by being located in the condenser pipe a plurality of temperature sensors up and down, the perception oven dry is carried out temperature contrast and is judged with the temperature value of air, when temperature contrast reaches certain value, is judged as barrel interior clothing drying; It is characterized in that the carrying out that described oven dry is judged with the temperature value perception and the temperature contrast of air, synchronous with the job step of draining pump, during draining pump work, carry out temperature value perception and temperature contrast and judge; When draining pump cuts out, do not carry out temperature value perception and temperature contrast and judge.