CN1928188A

CN1928188A - Drum washing machine

Info

Publication number: CN1928188A
Application number: CN200610110163.0A
Authority: CN
Inventors: 松冈真二; 皆吉裕子; 羽生敏; 玉江贞之
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2005-09-06
Filing date: 2006-08-04
Publication date: 2007-03-14
Anticipated expiration: 2026-08-04
Also published as: TW200712281A; JP2007068678A; MY154557A; SG130992A1; JP4600221B2; CN100562617C; TWI318259B

Abstract

A washing machine that prevents failure of electrical parts, etc. caused by a large amount of detergent foam generated during washing. The washing machine comprises a rotating drum (31) with a rotating center shaft in a horizontal direction or an inclined direction; a water tank (33) wrapped around the rotating drum (31) and elastically supported; a water supply valve ( 44); the water level detection device (46) for detecting the water level in the water tank (33); the drain valve (43) for discharging the water in the water tank (33); the control device (48) for controlling actions such as washing, rinsing, and dehydration ), according to the signal change of the water level detection device (46), detect the generation state of detergent foam in the water tank (33), control the subsequent defoaming process, washing process, rinsing process, water supply device and drainage device, thereby preventing the occurrence of The detergent foam adheres to electrical parts, causing them to malfunction, etc.

Description

Tumbling-box washing machine

Technical field

The present invention relates to a kind of tumbling-box washing machine, drive in the horizontal direction or incline direction has the swing roller of rotary middle spindle, wash, each program such as rinsing, dehydration, drying.

Background technology

At present, this tumbling-box washing machine, its cylinder can level or incline direction be the central shaft rotation, the water level of setting in the screw clamp that can feed water, wash, rinsing, dehydration, oven dry, have the condensate tank of dehumidifier (for example with reference to patent documentation 1) of the water level of the feedwater of detecting.

Shown in Fig. 4,5 is the structure of existing washing machine, describes with regard to its structure below.Swing roller 1 is provided with a plurality of limberss 2 on whole of peripheral part, and rotation is arranged on tank 3 inside freely.Rotating shaft 4 along continuous straight runs are fixed on the pivot of cylinder 1, connect motor 5, head roll 1 rotation at this rotating shaft 4.Internal face at swing roller 1 is provided with several raised plate 6, so that stir clothing.

Tank 3 utilizes spring body 8 to hang by body of the washing machine 7, can swing, connect an end of drainage connecting pipe 9 in the bottom of tank 3, the other end of drainage connecting pipe 9 is connected with draining pump 10, the distolateral connection drainpipe 11 of another of draining pump 10 is to discharge the washings in the tank 3.The drainpipe 11 that is connected with draining pump 10 erects earlier in main body upward, turns back below the height of flood level 26 partly bends towards.Water-supply valve 12 feeds water in tank 3, the water level that condensate tank of dehumidifier 18 detects in the tank 3.

Blowing fan 13, heater 14 and hot blast air-supply path 15 are taken in the air in the tank 3 from hot blast intake 17, discharge from hot blast outlet 16, and carry out drying.By above structure wash, rinsing, dehydration and oven dry.

Patent documentation 1: the spy opens flat 10-201991 communique

But in this existing washing machine, when producing detergent foam because of the too much input of washing agent etc. singularly in washing process, detergent foam just might immerse, be full of hot blast air-supply path etc., and attached on the electric component etc.Thereby therefore detergent foam, in case attached on the electric components such as heater and fan motor, corrosion or electrical short just might take place, causes the generation of unfavorable conditions such as fault owing to contain detergent ingredients electrical conductivity height.

In addition, if detergent foam continues to increase, the detergent foam that spills into from washing agent input port etc. inside and outside the washing machine will be attached on the electric components such as motor, or fall to the ground, and its infringement may increase, as building etc. is exerted an influence etc.

Furtherly, if under the unusual state that takes place of this detergent foam, remain in operation, then a large amount of detergent foam can hinder the rotation of cylinder, poor starting (rotation of cylinder is unusual) when causing the dehydration running, can not guarantee sufficient rinsing function and spin-dry function, or produce the unfavorable condition that prolong the duration of runs.

Summary of the invention

The present invention develops in order to address the above problem, and its purpose is, prevents that the detergent foam that produces in washing process from reduce the washing machine function, and attached to making it on the electric component to break down etc.

For achieving the above object, the invention provides a kind of tumbling-box washing machine, it has: in the horizontal direction or incline direction have the swing roller of rotary middle spindle; Be wrapped in described swing roller and flexibly be bearing in tank on the body of the washing machine; The waterworks that in described tank, feed water; Detect the condensate tank of dehumidifier of water level in the described tank; Drainage arrangement with the discharge of the water in the described tank; The control device of actions such as control washing, rinsing, dehydration, described control device changes according to the signal of described condensate tank of dehumidifier, detect the generation state of detergent foam in the tank, according to testing result, control washing process, rinse cycle, dehydration and waterworks and drainage arrangement.

In view of the above, can eliminate a large amount of detergent foam that produce in washing process rapidly, or suppress the generation of detergent foam.In addition, can prevent to produce the above detergent foam of ormal weight, to prevent these foams the washing machine function be reduced, or, form the state of corrosion or electric short circuit attached on the electric components such as heater and fan motor.

Description of drawings

Fig. 1 is the sectional side view of the tumbling-box washing machine of embodiment of the present invention 1;

Fig. 2 is the control circuit figure after a part of modularization of the same washing machine;

Fig. 3 is the workflow diagram at the main position of the same washing machine;

Fig. 4 is the sectional side view of existing washing machine;

Fig. 5 is the stereogram after the part of existing washing machine is cut.

Reference numeral

31 swing rollers

33 tanks

43 draining valves (drainage arrangement)

44 water-supply valves (waterworks)

46 condensate tank of dehumidifier (detergent foam checkout gear)

48 control device

The specific embodiment

Followingly embodiments of the present invention are described with reference to accompanying drawing.In addition, the invention is not restricted to this

Embodiment.

(embodiment 1)

The sectional side view of the tumbling-box washing machine of Fig. 1 the 1st embodiment of the present invention, Fig. 2 are the control circuit figure after the localized mode blocking of this tumbling-box washing machine.

As depicted in figs. 1 and 2, swing roller 31 is formed with the round-ended cylinder shape, is provided with a plurality of limberss 32 on whole of peripheral part, is rotated to be arranged on freely in the tank 33.Swing roller 31 has the rotating shaft (rotary middle spindle) 34 that is provided with at its pivot, and the axis direction of swing roller 31 is set to have a down dip to back side side direction from face side.On this rotating shaft 34, be mounted on the motor 35 of tank 33 bottoms, rotate to just changeing with reverse direction to drive swing roller 31.Internal face at swing roller 31 is provided with several raised plate 36, so that stir clothing.

The peristome that is provided with at the face that is inclined upwardly of the face side of tank 33 is covered by lid 37, and these lid 37 switches freely.By opening this lid 37, can in swing roller 31, pick and place washings by clothing gateway 38.Because lid 37 is located at upwards inclined plane, so can bend over when picking and placeing washings.

Tank 33 is played by spring body 40 and damper 41 on body of the washing machine 39, can swing.An end that connects drainage channel 42 in tank 33 bottoms is connected the other end and the draining valve (drainage arrangement) 43 of drainage channel 42, with the discharge of the washings in the tank 33.The part process that water-supply valve (waterworks) 44 will feed water by the 1st water-feeding path 60 is formed in the detergent put-in device 61 of body of the washing machine 39 front upper, feeds water in tank 33 from feed pipe 62.In addition, a part of feedwater, is fed water in swing roller 31 through admission port 64 from the top peristome of tank 33 via second feed pipe 63 from water-supply valve (waterworks) 44.For example, before the 1st predetermined water level, feed water, thereafter, before the 2nd predetermined water level, feed water by the 2nd feed pipe 63 by water-feeding path 60.

Condensate tank of dehumidifier 46 is the devices that detect the water level in the tank 33, still detects the detergent foam checkout gear of washing agent foam state in the tank 33 simultaneously.Bottom in tank 33 is provided with the washing heater 45 of the water that injects being heated into warm water.

Here, condensate tank of dehumidifier 46 pressure sensors by detected pressures such as diaphragm types constitute, usually possess the output that is drawn by hydraulic pressure is converted to frequency, and the function of detection tank 33 interior predetermined water level, also possesses following function, when producing a large amount of detergent foam in the tank 33, in the tank 33 that is close to sealing state, detergent foam is had nowhere to go, pressure in the tank 33 begins to rise, change (for example 1.5kHz) by the pressure that has detected from the regulation of the state of predetermined water level (pressure), thereby can detect the state of too much generation detergent foam.Owing to have two functions of carrying out the detection of the detection of washings water level and abnormal pressure by a checkout gear, so be very economical and practical.

Carry out being used for when Warm Wash is washed the washing heater 45 that constitutes by ceramic heater etc. of heated scrub water in tank 33 bottom 33a configuration.

Control device 47 is configured in body of the washing machine 39 lower inner, and lotion feeding device 61 configurations of the upper front of its input setting device 50 and indication device 51 close body of the washing machine 39.

In addition, in the present embodiment although understand, swing roller 31 has the rotating shaft (rotary middle spindle) 34 that is provided with at its pivot, the axis direction of swing roller 31 is set to be had a down dip to back side side direction by face side, but the swing roller 31 with rotating shaft 34 also can be configured to the relative body of the washing machine almost parallel in its center.

In addition, do not have drying function in the present embodiment, but be not limited thereto.

In general, when the water temperature of washing raises (about about 60 ℃), be easy to generate foam, so the present invention is effective especially to the washing machine with warm water function.

The circuit structure that control device 47 adopts as shown in Figure 2, has the control device 48 that constitutes by microcomputer, by the action of power switch device 49 control motor 35, draining valve 43, water-supply valve 44, washing heater 45 etc., control a series of strokes such as washing, rinsing, dehydration successively.Input setting device 50 is set operation process etc., and control device 48 receives the information that input setting device 50 is sent, and shows in display unit 51 according to this information, notifies the user.In addition, source power supply 52 is that operating power switch 53 carries out power supply input and connection.In addition, control device 48 bases are from the information of the speed detector 54 of the rotating speed that detects motor 35, the rotation of control motor 35.

Fig. 3 is the workflow diagram at main position of the tumbling-box washing machine of embodiment of the present invention.

Action, effect when detecting detergent foam below in conjunction with Fig. 3 to utilizing condensate tank of dehumidifier in the washing describe.

Washing beginning (step 100), after water-supply valve 44 feeds water to the water level of stipulating (step 101), condensate tank of dehumidifier 46 carries out the setting (step 102) of normal water level (pressure).Thereafter, surpass the 1st standard value for example (step 103) during 1.5kHz from the frequency change of normal water level, then judge detergent foam and produce in a large number singularly, after draining (step 104), operation is 7 minutes de-bubble programs (step 105) for example.

The function of said here de-bubble program (step 105) is, be preferably in halted state or below 20r/min by the rotation that makes swing roller 31, simultaneously, make water-supply valve 44 action and draining valve 43 actions simultaneously or hocket, drainage channel 42 detergent foam on every side that accumulates in tank 33 is discharged efficiently.In addition,, pass through admission port 64 to swing roller 33 and inner clothing and detergent foam water spray, then will significantly improve described de-bubble function from tank 33 top peristomes if via the 2nd feed pipe 63 illustrated in fig. 1.

After de-bubble operation (step 105) finishes, finish washing procedure (step 110), enter next operation.

As mentioned above, when judging detergent foam and produce in a large number, can utilize the de-bubble function to eliminate detergent foam rapidly, produce the unfavorable condition that detergent foam is brought thereby can eliminate.

(embodiment 2)

Control circuit figure with reference to Fig. 3 illustrates the 2nd embodiment of the present invention.

In step 103, when the frequency change of judging based on normal water level is lower than 1.5kHz, when detergent foam does not produce unusually, in next procedure 106, surpass the 2nd a reference value in the frequency change that produces based on normal water level, for example under the situation of 1.0kHz, judge detergent foam and be multimode slightly, thereby judge the de-bubble operation 105 when also needn't move detergent foam produces in a large number, after the program (step 107) of the washing action that weakened turned round 3 minutes, return to normal procedure (step 108).

Here the said program (step 107) that has weakened the washing action is, with the rotating speed of swing roller 31 by normal procedure as 40～50r/min, slow down as about 10～20r/min, or the rotary work efficient (rotational time of cylinder/(rotational time+dwell time of cylinder)) of swing roller 31 is for example reduced about 30% wash, reduce mixing power thus, suppress the generation of detergent foam.

In step 106, when the frequency change of judging based on normal water level is lower than 1.0kHz, detergent foam after a little while, just according to normal program continuous running.

After wash time is according to the rules carried out above action repeatedly (step 109), washing finishes (step 110), enters next program.

As mentioned above, in washing process, can suppress to produce present situation or than the more detergent foam of present situation.

(embodiment 3)

In this tumbling-box washing machine, in rinse cycle, the washings that contain washing agent to be discharged after washing,, make swing roller 31 rotations, utilize its centrifugal force to carry out centrifugation in order further the cleaning solution that contains in the clothing to be removed from clothing.In present embodiment 3, detecting signal in the water level detecting based on detergent foam changes, (surpass under the situation of 1.0kHz) under a large amount of situations about producing of detergent foam, with the dehydration action of not carrying out in the above-mentioned rinse cycle as frequency change based on normal water level.More specifically say to be exactly, generally after washing finishes, can enter normal rinse cycle.That is, discharge the washings that contain cleaning solution, carry out centrifugation (dehydration), afterwards, carry out stipulated number feedwater, rinsing, draining, centrifugation.But in present embodiment 3, when detergent foam produces in a large number, for example when frequency change based on normal water level taking place surpass the situation of 1.0kHz, in above-mentioned normal rinse cycle, add the rinse cycle that does not have the dehydration action in washing process or rinse cycle.The rinse cycle of said here nothing dehydration action is meant the action (centrifugation) of just not dewatering in common rinsing process.For example, when in washing process, as in embodiment 1,2, when frequency change having taken place surpassing the situation of 1.0kHz, then in present embodiment 3, before above-mentioned common rinse cycle, there is not the rinsing process of dehydration action.In addition, when in common rinsing process, producing frequency change and surpass 1.0kHz, then in present embodiment 3, after implementing not have the rinsing process of dehydration action and carrying out de-bubble, implement conventional rinsing process once more.

Like this, even in rinse cycle, also can suppress the generation of detergent foam.

Also the kind because of sensor is different sometimes with the 2nd standard value for above-mentioned the 1st standard value.

As mentioned above, by condensate tank of dehumidifier 46 detect the state of detergent foam based on the frequency change of standard value, carry out de-bubble, thereby prevent that the detergent foam that produces is attached to the generation that causes fault etc. on the electric component.Simultaneously, also can prevent the rotation generation resistance of detergent foam, cause dehydration starting bad (the cylinder rotation is unusual), can not guarantee abundant rinsing function and spin-dry function swing roller 31, and the phenomenon that prolongs the duration of runs.

Utilizability on the industry

As mentioned above, washing machine of the present invention, in the horizontal direction or incline direction have rotary middle spindle, Wherein, can detect by the signal intensity of condensate tank of dehumidifier the state of detergent foam, prevent Therefore the increase of detergent foam, can protect electric component not damaged by detergent foam as having The washing machine etc. of anti-locking apparatus be useful.

Claims

1. A drum-type washing machine, comprising: a rotating drum having a central axis of rotation in a horizontal direction or an inclined direction; a water tank that wraps around the rotating drum and is elastically supported on the main body of the washing machine; and supplies water to the water tank. device; a water level detection device for detecting the water level in the water tank; a drainage device for discharging the water in the water tank; a control device for controlling washing, rinsing, dehydration, etc., and the control device changes according to the signal of the water level detection device Detect the generation state of detergent foam in the sink, and control the washing process, rinsing process, dehydration process, water supply device and drainage device according to the detection results.

2. The drum type washing machine as claimed in claim 1, wherein, during the washing or rinsing process, after the control device detects the change of the signal of the water level detection device caused by detergent foam, the change occurs at the first time of the change. If it exceeds the standard value of 1, perform the defoaming process for a predetermined time.

3. The drum-type washing machine according to claim 2, wherein the control device operates the water supply device and the drain device simultaneously or alternately during the defoaming procedure.

4. The drum-type washing machine according to claim 2 or 3, wherein when the water level detection device is a pressure sensor, the first standard value is 1.5kHz.

5. The drum type washing machine as claimed in claim 1, wherein, during the washing or rinsing process, after the control device detects a change in the signal of the water level detection device caused by detergent foam, the control device stops when the change is less than the first When the standard value is 1 standard value and is greater than or equal to the second standard value, the washing operation is made weaker than the normal washing operation for a predetermined time.

6. The drum-type washing machine according to claim 5, wherein when the water level detection device is a pressure sensor, the first standard value is 1.5 kHz, and the second standard value is 1.0 kHz.

7. The drum-type washing machine according to any one of claims 1-3, 5-6, wherein, during the washing or rinsing process, the control device, when the signal of the water level detection device caused by detergent foam When the change is more than a predetermined value, a rinsing step in which the dehydration operation is not performed is added.

8. The drum-type washing machine according to claim 7, wherein when the change in the signal of the water level detection device due to the detergent bubbles exceeds a predetermined value occurs during the washing process, the control device The rinsing process without dehydration operation is performed before the rinsing process, and if it occurs during the rinsing process, the rinsing process is performed again after the rinsing process without dehydration operation.

9. The drum-type washing machine as claimed in claim 4, wherein the control device adds an additional control when the change in the signal of the water level detection device caused by the detergent bubbles exceeds a predetermined value during washing or rinsing. The rinsing step of the dehydration operation is performed.

10. The drum-type washing machine according to claim 9, wherein when the change in the signal of the water level detection device caused by the detergent foam reaches a predetermined value or more occurs during the washing process, the control device The rinsing without dehydration operation is performed before the rinsing process, and if it occurs during the rinsing, the rinsing process is performed again after the rinsing without dehydration operation.