CONTROL METHOD OF FLOCCULATION WASHING MACHINE, AND WASHING MACHINE

Abstract

A control method of a flocculation washing machine comprises: detecting an amount of washing water V and an amount of a detergent delivered m in a washing procedure to obtain a concentration of the detergent C=m/V; and determining a number of times N of flocculation circulation and a dose M.sub.n of a flocculant corresponding to each flocculation circulation according to the concentration of the detergent C. The number of times N of flocculation circulation and the dose M.sub.n of the flocculant corresponding to each flocculation circulation can be obtained accurately only based on one parameter. Besides, the flocculation treatment and the rinsing procedure of the washing machine are synchronously executed, and at an end node, the concentration of the detergent in the outer drum is lower than a set value, thereby achieving the purpose of removing detergent residual on clothes.

Claims

1. A control method of a flocculation washing machine, comprising: acquiring an amount of washing water V and an amount of a detergent delivered m in a washing procedure to obtain a concentration of the detergent C=m/V; determining a number of times N of flocculation circulation of the washing water and a dose of a flocculant M.sub.n corresponding to each flocculation circulation according to the concentration of the detergent C.

2. The method according to claim 1 comprising the following specific steps, 1) obtaining the amount of the washing water V by a selection of a user and/or a detection of the washing machine, and invoking a corresponding amount V.sub.1 of water treated in each flocculation circulation and an amount V.sub.2 of residual water after treatment and returning; and obtaining a dilution rate p after each flocculation treatment according to ?=(V.sub.1?V.sub.2)/(V?V.sub.2); 2) obtaining a concentration of the detergent C.sub.n in an outer drum after a n-th time of flocculation circulation according to C.sub.n=C ?.sup.n, which n is any integer larger than 0; 3) comparing C.sub.n with a set value C.sub.min to obtain the number of times N of flocculation circulation; and 4) obtaining a dose of the flocculant M.sub.n delivered in the n-th time of flocculation circulation according to M.sub.n=(V.sub.1?V.sub.2)*? C ?.sup.n-1.

3. The method according to claim 2, wherein, the amount V.sub.1 of water treated in each flocculation circulation is a maximum capacity of a flocculation drum when the amount of the washing water V is larger than a set value; and the amount V.sub.1 of water treated in each flocculation circulation is ? to ? of the maximum capacity of the flocculation drum when the amount of the washing water V is smaller than the set value.

4. The method according to claim 2, wherein, the amount V.sub.2 of the residual water after treatment and returning is an amount of residual water in a flocculation drum after the flocculation treatment, and V.sub.2 is a set value smaller than ? of a maximum capacity of the flocculation drum.

5. The method according to claim 2, wherein, a value C.sub.n closest to the set value C.sub.min and smaller than C.sub.min is determined, and then the number of times N of flocculation circulation is n corresponding to the value determined.

6. The method according to claim 2, wherein, in step 4), a dose M.sub.1 of the flocculant delivered in a first time of flocculation circulation satisfies M.sub.1=? m V.sub.1/V=V.sub.1 ? C.

7. The method according to claim 1, wherein, after the washing procedure of the washing machine ends, a rinsing procedure starts running by utilizing the washing water, and simultaneously the washing water is subjected to N times of flocculation circulation, and the flocculant is delivered into the flocculation drum in an amount M.sub.n of in each flocculation circulation.

8. The method according to claim 7, wherein, a specific working process of the washing machine is as follows: S1) obtaining the amount of the washing water V and the amount of the detergent delivered m by detection after the washing machine starts running the washing procedure, and obtaining the concentration of the detergent C according to C=m/V; S2) determining the number of times N of flocculation circulation of the washing water and the dose M.sub.n of the flocculant delivered corresponding to each flocculation circulation according to the concentration of the detergent C; S3) after the washing procedure ends, allowing the washing water in an outer drum to flow into the flocculation drum until the amount V.sub.1 of washing water in the flocculation drum is, delivering the flocculant in the amount of M.sub.n into the flocculation drum, performing flocculation treatment on the washing water in the flocculation drum, and thereafter allowing water in the flocculation drum to flow back to the outer drum until an amount V.sub.2 of residual water in the flocculation drum is; S4) adding 1 to the number of times of flocculation circulation to get an accumulated value, and determining whether the accumulated value reaches N or not; if not, continuously executing step S3) while substituting the accumulated value into step S3) as n; and if yes, executing step S6); S5) starting running the rinsing procedure by utilizing the washing water in the outer drum while executing step S3) and step S4); and S6) after the rinsing procedure ends, completely draining out water in the outer drum and the flocculation drum, and cleaning the flocculation drum.

9. A washing machine adopting the control method according to claim 1, wherein, a flow sensor is arranged on a water intake structure of the washing machine and/or a liquid level sensor is disposed in an outer drum to detect an amount of washing water V; and a flow sensor is arranged on an automatic detergent deliverer to detect an amount of a detergent delivered m.

10. The washing machine according to claim 7, wherein, a liquid level sensor disposed in the flocculation drum and/or a flow sensor is arranged on a pipe for connecting the outer drum with the flocculation drum to detect an amount of water in the flocculation drum; and a flow sensor is arranged on an automatic flocculant deliverer to detect a dose of a flocculant.

11. The method according to claim 2, wherein, after the washing procedure of the washing machine ends, a rinsing procedure starts running by utilizing the washing water, and simultaneously the washing water is subjected to N times of flocculation circulation, and the flocculant is delivered into the flocculation drum in an amount M.sub.n of in each flocculation circulation.

12. The washing machine adopting the control method according to claim 2, wherein, a flow sensor is arranged on a water intake structure of the washing machine and/or a liquid level sensor is disposed in an outer drum to detect the amount of washing water V; and a flow sensor is arranged on an automatic detergent deliverer to detect the amount of a detergent delivered m.

13. The washing machine adopting the control method according to claim 7, wherein, a flow sensor is arranged on a water intake structure of the washing machine and/or a liquid level sensor is disposed in an outer drum to detect the amount of washing water V; and a flow sensor is arranged on an automatic detergent deliverer to detect the amount of a detergent delivered m.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG. 1 is a schematic diagram of an embodiment of the present disclosure;

[0038] FIG. 2 and FIG. 3 are flow charts of a control method of a flocculation washing machine according to an embodiment of the present disclosure; and

[0039] FIG. 4 is a flow chart of determination of a number of times N of flocculation circulation according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

[0040] The present disclosure is further described below in detail with reference to embodiments.

[0041] As shown in FIG. 1, a washing machine of the embodiment of the present disclosure is internally provided with a conventional washing machine structure and is also provided with a circulation water treatment device. The washing machine structure comprises an outer drum, an inner drum disposed inside the outer drum, a door body, a control panel, a water intake system and a washing motor, the bottom and an upper part of the outer drum are connected with a casing frame through a damper and a suspension spring, respectively, and the water intake system comprises a water intake structure and an automatic detergent delivering device. The outer drum is a containing structure for containing washing water, and the inner drum disposed inside the outer drum is a washing structure. The outer drum is in communication with the water intake structure.

[0042] In the embodiments of the present disclosure, a flow sensor is arranged on the water intake structure of the washing machine and/or a liquid level sensor is disposed in the outer drum to detect an amount of washing water V; and a flow sensor is arranged on the automatic detergent deliverer to detect an amount of detergent delivered m.

[0043] In the embodiments of the present disclosure, the circulating water treatment device at least comprises a flocculation treatment unit; the flocculation treatment unit comprises a flocculation drum in communication with the outer drum and a flocculant deliverer by which a flocculant is delivered into the flocculation drum, and water is drained from the outer drum into the flocculation drum for flocculation treatment.

[0044] A liquid level sensor is disposed in the flocculation drum and/or a flow sensor is arranged on a pipe, connected with the outer drum, of the flocculation drum to detect an amount of water in the flocculation drum; and a flow sensor is arranged on the automatic flocculant deliverer to detect a dose of flocculant delivered.

[0045] The flocculation drum is provided with a water inlet, a water return opening and a drain outlet; a water outlet of the outer drum is in communication with the water inlet of the flocculation drum through a pipe equipped with a first water pump, and the water return opening of the flocculation drum is in communication with a water inlet of the outer drum through a pipe equipped with a second water pump, thereby forming a controllable circulation loop of washing water between the outer drum and the flocculation drum. The drain outlet of the flocculation drum is in communication with the external of the washing machine through a pipe equipped with a drainage valve, and the drain outlet drains out sewage and flocculates after washing is completed.

[0046] Preferably, the circulating water treatment device further comprises a filtering unit; the filtering unit performs filtering treatment on water after flocculation treatment in the flocculation treatment unit to separate flocculates from clean water. However, flocculates can also be separated from clean water without a filtering device, for example, a water level sensor is disposed in the flocculation drum to ensure that the water level of the flocculation drum always keeps a certain height, so that flocculates floating on the water surface of the flocculation drum are always left in the flocculation drum, and the purpose of removing flocculates in flocculation water is also achieved.

[0047] In the embodiments of the present disclosure, an amount of the washing water V and an amount of the detergent delivered m in the washing procedure are obtained by detection, and a concentration of the detergent C is obtained according to C=m/V. And a number of times N of flocculation circulation and a dose of the flocculant delivered corresponding to each flocculation circulation M.sub.n are determined according to the concentration of detergent C.

[0048] By the above modes, different flocculation treatment processes are matching with different washing procedures, and the dose of the flocculant delivered is accurately controlled to prevent a condition that flocculates cannot be stratified from occurring. Besides, the number of times of flocculation circulation is also accurately determined to prevent a condition that the detergent is treated incompletely or the number of times of flocculation circulation is excessive to waste electric power from occurring. Further, in the present disclosure, the number of times N of flocculation circulation and the dose M.sub.n of the flocculant delivered corresponding to each flocculation circulation can be obtained accurately only based on the concentration of the detergent in the washing procedure, and the accurate control on the flocculation treatment processes of the washing machine is achieved.

Embodiment 1

[0049] As shown in FIG. 3, in this embodiment, specific steps for determining a number of times N of flocculation circulation and a dose of a flocculant delivered corresponding to each flocculation circulation M.sub.n are as follows:

[0050] 1) an amount of washing water V is selected by a user and/or detected by a washing machine to invoke a corresponding amount V.sub.1 of water in each flocculation circulation and an amount V.sub.2 of residual water after treatment and returning; and a dilution rate ? in each flocculation circulation is obtained according to ?=(V.sub.1?V.sub.2)/(V?V.sub.2);

[0051] 2) a concentration C.sub.min of a detergent in an outer drum after the n-th time of flocculation circulation is obtained according to C.sub.n=C ?.sup.n (n is any integer larger than 0);

[0052] 3) C.sub.n is compared with a set value C.sub.min to obtain the number of times N of flocculation circulation; and

[0053] 4) a dose of the flocculant delivered in the n-th time of flocculation circulation M.sub.n is obtained according to M.sub.n=(V.sub.1?V.sub.2)*? C ?.sup.n-1.

[0054] In this embodiment, the amount V.sub.2 of the residual water after treatment and returning in the flocculation drum does not exist before the very first time of flocculation circulation, so that, a special condition exists in step 4). Namely the dose of the flocculant delivered in the first time of flocculation circulation M.sub.1=? m V.sub.1/V=V.sub.1 ? C; and the dose of the flocculant delivered in other times of flocculation circulation is still equal to the dose of the flocculant delivered in the n-th time of flocculation circulation M.sub.n=(V.sub.1?V.sub.2)*? C ?.sup.n-1 (M.sub.n includes M.sub.2 corresponding to the second time of flocculation circulation, . . . and M.sub.n corresponding to the n-th time of flocculation circulation).

[0055] In this embodiment, the amount of water treated in flocculation circulation is an amount of water in the flocculation drum during the flocculation treatment. The amount V.sub.1 of water treated in each flocculation circulation is the maximum capacity of the flocculation drum when the amount of the washing water V is larger than a set value; and the amount V.sub.1 of water treated in each flocculation circulation is ? to ? of the maximum capacity of the flocculation drum when the amount of the washing water V is smaller than the set value. Preferably, V.sub.1 is ? of the maximum capacity of the flocculation drum.

[0056] In this embodiment, the amount V.sub.2 of residual water after treatment and returning is a set value which is smaller than ? of the maximum capacity of the flocculation drum; and preferably, V.sub.2 is a set value between 0.5 L and 3 L.

[0057] In this embodiment, in step 4), ? is a corresponding set value according to characteristics of the detergent and the flocculant. Preferably, a includes a plurality of different values ?.sub.1, ?.sub.2, ?.sub.3, ?.sub.4, . . . and ?.sub.m stored in the washing machine; and each value respectively corresponds to different types of detergents and flocculants to improve the determination accuracy.

[0058] As shown in FIG. 4, in this embodiment, the number of times N of flocculation circulation is obtained in step 3) as follows: a value C.sub.n closest to the set value C.sub.min and smaller than C.sub.min is determined, and then the number of times N of flocculation circulation is n corresponding to the determined value. Specific determination steps are as follows:

[0059] 31) an accumulated value is initialized and is returned to 1;

[0060] 32) C.sub.1 is compared with the set value C.sub.min, and step 30) is executed if C.sub.1 is larger than the set value C.sub.min; otherwise, the accumulated value adds 1 and step 33) is executed;

[0061] 32) C.sub.2 is compared with the set value C.sub.min, and step 30) is executed if C.sub.2 is larger than the set value C.sub.min; otherwise, the accumulated value adds 1 and step 34) is executed, . . . ;

[0062] 30) the accumulated value at this time is taken as the number of times N of flocculation circulation and is outputted.

[0063] By the above modes, the corresponding C.sub.n closest to the set value C.sub.min and smaller than C.sub.min can be quickly determined, and the corresponding number of times N of flocculation circulation can be obtained. Therefore, the concentration of the detergent in the washing drum is smaller than the set value after the flocculation treatment circulates for N times, thereby achieving the purpose of removing detergent residual on the clothes. Besides, an end time node of a rinsing procedure can be accurately controlled through the above determination, improving the control accuracy of the washing machine.

Embodiment 2

[0064] In this embodiment, after the washing procedure of the washing machine ends, a rinsing procedure starts running by utilizing the washing water, and simultaneously the washing water is subjected to N times of flocculation circulation, wherein the flocculant is delivered into the flocculation drum in an amount of M.sub.n in each flocculation circulation.

[0065] As shown in FIG. 2, a specific working process of the washing machine is as follows:

[0066] S1) an amount of the washing water V and an amount of the detergent delivered m are obtained by detection after the washing machine starts running the washing procedure, and a concentration of the detergent C is obtained according to C=m/V;

[0067] S2) the number of times N of flocculation circulation of washing water and a dose M.sub.n of the flocculant delivered corresponding to each flocculation circulation are determined according to the concentration of the detergent C;

[0068] S3) the washing procedure ends, the washing water in the outer drum flows into the flocculation drum until the amount V.sub.1 of washing water in the flocculation drum is, and the flocculant is delivered into the flocculation drum in an amount of M.sub.n; and after the washing water in the flocculation drum is subjected to flocculation treatment, water in the flocculation drum flows back to the outer drum until an amount of residual water in the flocculation drum is V.sub.2;

[0069] S4) an accumulated value of the number of times of flocculation circulation adds 1, and whether the accumulated value reaches N or not is determined; if not, step S3) is continuously executed, and the accumulated value is substituted as n; and if so, step S6) is executed;

[0070] S5) the rinsing procedure starts running by utilizing the washing water in the outer drum while step S3) and step S4) are executed; and

[0071] S6) the rinsing procedure ends, water in the outer drum and the flocculation drum is completely drained out, and the flocculation drum is cleaned.

[0072] In this embodiment, the number of times N of flocculation circulation and the dose M.sub.n of the flocculant delivered corresponding to each flocculation circulation are obtained in step S2) according to the determination method from step 1) to step 4) in the embodiment 1.

[0073] By the above modes, the flocculation treatment and the rinsing procedure of the washing machine are synchronously executed, and at an end node, the concentration of the detergent in the outer drum is lower than the set value, thereby achieving the purpose of removing detergent residual on the clothes; and further, the dose of the flocculant and the number of times of flocculation circulation are accurately controlled, thereby improving the control accuracy of the flocculation treatment process of the washing machine.

[0074] The implementation solutions in the above embodiments are only for describing preferred embodiments of the present disclosure and are not intended to limit the concept and scope of the present disclosure, without departing from the design concept of the present disclosure, various changes and modifications made by those skilled in the art to the technical solutions shall all be covered within the scope of the present disclosure.