CN102704238B

CN102704238B - Drying judgment method for rotary washing machine

Info

Publication number: CN102704238B
Application number: CN201210193808.7A
Authority: CN
Inventors: 陈海兵; 徐刚; 陈定宙
Original assignee: Wuxi Little Swan Co Ltd
Current assignee: Wuxi Little Swan Electric Co Ltd
Priority date: 2012-06-13
Filing date: 2012-06-13
Publication date: 2015-02-04
Anticipated expiration: 2032-06-13
Also published as: CN102704238A

Abstract

The invention relates to a control method for a rotary washing machine, in particular to a drying judgment method for the rotary washing machine. The preset time includes t1, t2 and n; the temperature difference includes N, Delta Tmax and Delta Tmin; and the number of clothings is judged through comparing the difference between the T1 at t1 and the T2 at t2 with the N, and then the time of drying the clothings is selected according to the number of the clothings. According to the drying judgment method, the drying process is selected according to the number of the clothings, so that the energy is saved, and the drying judge accuracy is improved.

Description

A kind of roller washing machine dries determination methods

Technical field

The present invention relates to a kind of control method for drum washing machine, be specially roller washing machine and dry the method judged.

Background technology

Current roller washing machine is towards future development that is more energy-conservation, intelligent, hommization, and the roller washing machine with drying function also becomes the main flow in market gradually.Existing technology is still dried based on constant temperature timing the control of drying, the precision of intelligence oven dry aspect is all lower, and the function of weighing that variable-frequency motor has can't high-precisionly realize at series excited machine, so cause washing machine to be difficult to accurately judge to need the number of drying clothes, cause occurring when clothing is few over-drying thus, and occur the situation of not drying more when clothing.

Although the signal that now also with good grounds temperature-detecting device feeds back controls, effectively raise the degree of accuracy of temperature detection, avoid the error that additional temperature checkout gear or other checkout gears cause, simplify the control method of drying procedure.Such as patent application CN101082161A provides a kind of roller washing machine and the control method thereof that are provided with drying procedure.But the reference temperature(TR) that technology disclosed in above-mentioned patent application document is selected when judging oven dry is absolute value, but reality may affect by the temperature of environment temperature, humidity, voltage, frequency and condensed water when roller washing machine runs, in bucket, the temperature of actual heating has relative difference.

Summary of the invention

The object of the invention is distinguishing the how many accuracy of bucket undergarment to improve washing machine, different clothes weight can be improved like this and determine the parameters such as drying time, thus realize final effect of drying, prevent some small clothes owing to being reduced its life-span by excessively drying simultaneously, so not only provide the user more humane service, and can energy consumption be reduced.Concrete technical scheme is:

Preset time t 1, t2, n; Temperature difference N, △ Tmax, △ Tmin, concrete determining step comprises:

The first step, when after drying heating tube and opening, complete machine moves to time t1, the condenser intake air temperature T1 that record is now corresponding;

Second step, dries when moving to time t2 from heating tube, then records now corresponding condenser intake air temperature T2;

3rd step, calculates T2-T1=T, and being then defaulted as T>N in bucket is a small amount of clothing, and being then defaulted as T<=N in bucket is a large amount of clothing;

4th step, meanwhile, under the heating of drying heating tube, calculates condenser air inlet maximum temperature value Timax in relative time n;

5th step, after above process completes, the difference calculating Current Temperatures Tinew and the Timax of condenser air inlet is; As clothing more ， ∣ Timax-Tinew ∣ >=△ Tmax, dry and terminate, program enters into cool time; As clothing less Shi ， ∣ Timax-Tinew ∣ >=△ Tmin, dry and terminate, program enters into cool time.

Described preset time t 1 is 2 ~ 4 minutes, and optimal selection is 3 minutes, and t2 is 10 ~ 20 minutes, and optimal selection is 15 minutes.

Described Preset Time n is 7 ~ 15 minutes, and optimal selection is 10 minutes.

Described Timax preparation method is, is recorded to maximum temperature Tin1 when time n1, and all, Tin2 is greater than or equal to temperature Tin1 to the temperature Tin2 within the n1+n time afterwards, then the temperature Tin2 now recorded just can be decided to be maximum temperature value Timax.N is 5 ~ 15 minutes, is preferably 10 minutes.

In general bucket, clothing weight is less than 1.5kg, can think that clothing is less, is greater than 1.5gk, thinks that laundry amounts is larger.

Method provided by the invention can be applied in variable-frequency motor and non-frequency motor, the weight of concrete clothing can not be judged by the impact that motor weighing precision is not high, what judge the method selection of drying on the other hand is relative temperature, and the impact of the temperature of the environment temperature, power supply and the condensed water that used by washing machine is less.And the concrete numerical value of above parameters can be determined according to the result of reality test.

The present invention judges the size of actual clothing in bucket in the speed of starting stage (in the setting-up time) variations in temperature of drying by condenser air inlet sensor, the time judged can complete at about 15 minutes, relatively seldom consuming time, the overall process also not affecting actual oven dry, then judge respectively again to dry the time needed according to clothing is how many, improve and dry accuracy of judgement degree.

Accompanying drawing explanation

Fig. 1 is method flow diagram of the present invention;

Fig. 2 is the sub-temperature-time charts of embodiments of the invention.

Detailed description of the invention

Accompanying drawings the specific embodiment of the present invention,

Flow chart as shown in Figure 1, first arranging t1 is 3 minutes, and t2 is 15 minutes, and N is 30, △ Tmax be 5, △ Tmin be 8, n is 10 minutes.

As shown in Figure 2, the clothing of 1kg is placed in inner tank of washing machine, after preorder cleaning, starts to dry, dry heating tube and open, when moving to t1:3 minute, condenser intake air temperature T1:47 DEG C now;

When heating tube runs to t2:15 minute time, condenser intake air temperature T2:84 DEG C;

Calculate T=T2-T1=84 DEG C-47 DEG C=37 DEG C, due to 37 > N=30, in washing machine identification inner tank of washing machine, have a small amount of clothing;

Meanwhile, after oven dry heating tube is opened 38 minutes, temperature is 109 DEG C, then after getting after this 10 minutes, interior temperature is all less than 109 DEG C, and calculating condenser air inlet maximum temperature value Timax is 109 DEG C;

When oven dry was by 58 minutes, the Current Temperatures Tinew of condenser air inlet is 101 DEG C, with the difference of Timax Wei ∣ 101 DEG C of-109 ∣=8 DEG C, reach the value of △ Tmin:8, dry and terminate, program enters into cool time.

The clothing of 4kg is placed in inner tank of washing machine, after preorder cleaning, starts to dry, dry heating tube and open, when moving to t1:3 minute, condenser intake air temperature T1:36 DEG C now;

When heating tube runs to t2:15 minute time, condenser intake air temperature T2:65 DEG C;

Calculate T=T2-T1=65 DEG C-36 DEG C=29 DEG C, due to 29 < N=30, in washing machine identification inner tank of washing machine, have a large amount of clothing;

Meanwhile, after oven dry heating tube is opened 1 hour, temperature is 107 DEG C, then after getting after this 10 minutes, interior temperature is all less than 107 DEG C, and calculating condenser air inlet maximum temperature value Timax is 107 DEG C;

When oven dry was by 2 hours 17 minutes, the Current Temperatures Tinew of condenser air inlet is 112 DEG C, with the difference of Timax Wei ∣ 112 DEG C of-107 ∣=5 DEG C, reach the value of △ Tmax:5, dry and terminate, program enters into cool time.

Claims

1. roller washing machine dries a determination methods, preset time t 1, t2, n; Temperature difference N, △ Tmax, △ Tmin, is characterized in that, comprises the following steps,

First according to the heating scheduled time of heat time heating time and condenser intake air temperature and setting, judge that bucket undergarment is more clothing or less clothing:

1), when after drying heating tube and opening, complete machine moves to time t1, the condenser intake air temperature T1 that record is now corresponding;

2), dry when moving to time t2 from heating tube, then record now corresponding condenser intake air temperature T2;

3), calculate T2-T1=T, being then defaulted as T>N in bucket is a small amount of clothing, and being then defaulted as T≤N in bucket is a large amount of clothing;

Meanwhile, under the heating of drying heating tube, in relative time n, condenser air inlet maximum temperature value Timax is calculated;

After above process completes, calculate the Temperature Difference Ratio of the absolute value of the Current Temperatures Tinew of condenser air inlet and the difference of maximum temperature value Timax and setting comparatively, as clothing more ， ∣ Timax-Tinew ∣ >=△ Tmax, dry and terminate, program enters into cool time; As clothing less Shi ， ∣ Timax-Tinew ∣ >=△ Tmin, dry and terminate, program enters into cool time; Described maximum temperature value Timax preparation method is, be recorded to maximum temperature Tin1, temperature Tin2 within the n1+n time afterwards when time n1, Tin2 >=Tin1, then the temperature Tin2 now recorded just is decided to be maximum temperature value Timax.

2. a kind of roller washing machine according to claim 1 dries determination methods, and it is characterized in that, described preset time t 1 is 2 ~ 4 minutes, and t2 is 10 ~ 20 minutes.

3. a kind of roller washing machine according to claim 1 dries determination methods, and it is characterized in that, described Preset Time n is 7 ~ 15 minutes.

4. a kind of roller washing machine according to claim 1 dries determination methods, and it is characterized in that, described Preset Time n is 5 ~ 15 minutes.