CN101994238B - Washing machine - Google Patents

Abstract

The present invention provides a washing machine, including a pipeline containing a washing liquid, a device for flowing the washing liquid in the pipeline, and an electrode sensor having a first electrode part and a second electrode part projecting to the pipeline to measure conductivity degree of the washing liquid, wherein the second electrode part is arranged on the downstream relative to the first electrode part, the first electrode part reduces a flow speed of the washing liquid flowed between the first electrode part and the second electrode part. Thereby, it is possible to obtain a flowage of the washing liquid that the conductivity degree of the washing liquid is suitable to measure, so as to improve measurement precision of the conductivity degree of the washing liquid.

Description

Washing machine

Technical field

The present invention relates to a kind of can with the washing machine of the electrical conductivity of high precision test cleaning solution.

Background technology

In recent years, the technological development for the physical characteristic detecting and measure cleaning solution is in progress.Flat No. 4-187183 of Japanese Laid-Open Patent Publication discloses and a kind ofly to detect in cleaning solution the contained kind of washing agent or the sensor of the concentration of washing agent.Sensor has pair of electrodes.By applying high frequency voltage between the pair of electrodes contacted with cleaning solution, detect the electrical conductivity of cleaning solution.

Pair of electrodes disclosed in above-mentioned patent document, the outer groove bottom running through washing machine along water jacket sidewall and configure.Along the cleaning solution of water jacket internal face flowing, between pair of electrodes.Because the cleaning solution between pair of electrodes is in the state of flow further downstream, the value of the electrical conductivity detected by pair of electrodes therefore can be caused unstable.Thus be difficult to the measurement carrying out high-precision electrical conductivity.

Summary of the invention

The object of the present invention is to provide a kind of can with the washing machine of the electrical conductivity of high precision test cleaning solution.

Washing machine involved in the present invention comprises: the interior pipeline containing cleaning solution; Allow the flow device that described cleaning solution flows in described pipeline; And possess and protrude from the first electrode section in described pipeline and the second electrode section for measuring the electrode sensor of the electrical conductivity of described cleaning solution, wherein, described second electrode section is relative to described first electrode area in downstream, and described first electrode section makes the flow velocity of the described cleaning solution between this first electrode section of inflow and described second electrode section reduce.

According to said structure, cleaning solution contained in pipeline is flowed by flow device.The electrode sensor possessing the first electrode section and second electrode section of giving prominence in pipeline measures the electrical conductivity of the cleaning solution between the first electrode section and the second electrode section.Second electrode section is arranged on the position more further downstream than the first electrode section.First electrode section makes the flow velocity of the described cleaning solution between inflow first electrode section and the second electrode section reduce.Its result, can obtain the flowing of the cleaning solution of the electrical conductivity measurement being suitable for cleaning solution.Like this, the certainty of measurement of the electrical conductivity of cleaning solution can be improved.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the schematic configuration of the tumbling-box washing machine represented involved by one embodiment of the present invention.

Fig. 2 is the schematic diagram representing the basket used in the draining control unit of the tumbling-box washing machine shown in Fig. 1.

Fig. 3 is the top view of the draining control unit of the tumbling-box washing machine shown in Fig. 1.

Fig. 4 is the front view of the draining control unit of the tumbling-box washing machine shown in Fig. 1.

Fig. 5 is the side view of the draining control unit of the tumbling-box washing machine shown in Fig. 1.

Fig. 6 is the side view of the draining control unit shown in Fig. 5 seen from contrary side.

Fig. 7 is the schematic diagram of the mounting structure representing the optical sensor used in the draining control unit shown in Fig. 3 to Fig. 6.

Fig. 8 is the schematic diagram representing the optical sensor shown in Fig. 7.

Fig. 9 is the schematic diagram of the supporting body structure of the optical sensor shown in key diagram 8.

Figure 10 is the schematic diagram representing the electrode sensor used in the draining control unit shown in Fig. 3 to Fig. 6.

Figure 11 is the schematic diagram of the mounting structure representing the electrode sensor shown in Figure 10.

Figure 12 is the schematic diagram of the flowing of the cleaning solution illustrated around the electrode sensor shown in Figure 11.

Figure 13 is the schematic diagram of the flowing illustrated from the cleaning solution the stream of the optical sensor shown in Fig. 7 to the electrode sensor shown in Figure 11.

Figure 14 illustrates the schematic diagram of the electrode sensor of the draining control unit of cleaning solution shown in from Fig. 3 to Fig. 6 to the flowing of circulating pump.

The schematic diagram of the flowing of the cleaning solution around electrode sensor when Figure 15 is the circulating pump work of washing the draining control unit shown in bright Fig. 3 to Fig. 6 and when draining valve works.

Figure 16 is the skeleton diagram of the circulating pump of the draining control unit shown in Fig. 3 to Fig. 6.

Figure 17 is the schematic diagram of the structure around the inflow entrance of the tank of the tumbling-box washing machine shown in key diagram 1.

Figure 18 is the schematic diagram of the functional structure in the control circuit portion washing the tumbling-box washing machine shown in bright Fig. 1.

Detailed description of the invention

Below, with reference to accompanying drawing, one embodiment of the present invention is described.In addition, used in explanation below " on ", D score, " left side " or " right side " etc. represent that the term in direction is only to allow explanation become clear, at all do not limit the present invention.In addition, " upstream " and/or " downstream " used in explanation below if term be not specifically noted, all refer to " upstream " and/or " downstream " that flow to the flow of liquor of draining control unit from the outlet of the tank of sink described later.

Fig. 1 is the summary construction diagram of the tumbling-box washing machine involved by an embodiment.In addition, the principle below illustrated is not limited to the tumbling-box washing machine shown in Fig. 1, also can be applied to other washing machine (such as, impeller (pulsator) formula washing machine or agitator type washing machine etc.).

Tumbling-box washing machine 1 has basket 2.The inside of basket 2 is provided with sink 3.The tank 31 of the cylindrical shape that the inside that sink 3 is included in basket 2 is rockably supported, the swing roller 32 of cylindrical shape rotatably supported in tank 31 and the motor 33 that swing roller 32 is rotated.Tank 31 and swing roller 32 have bottom respectively.Motor 33 is installed in the bottom outer (outer surface) of tank 31.Tank 31 is formed with the inflow entrance 312 flowed into for discharging the outlet 311 of cleaning solution and cleaning solution.Cleaning solution circulates from outlet 311 to inflow entrance 312.

Also contain in basket 2 supply water in tank 31 water system 4, to carry out draining or the drainage system 5 that cleaning solution circulate to the cleaning solution in tank 31 and send into sink 3 being used for the drying system 6 of hot blast of oven dry washings., and nonessentially have drying system 6 in addition.

Drying system 6 has circulation line 61, and this circulation line 61 comprises the end that is connected with the exhaust outlet 313 of tank 31 and is used for the blow vent sent into from the bottom of tank 31 by oven dry air.Drying system 6 also comprises the hair-dryer 62 being arranged on circulation line 61 inside.Hair-dryer 62 makes air flow in circulation line 61.As required, drying system 6 also can comprise trapping Soft flocks class and the filter of dedusting (filter), the dehumidification portion dehumidified to the importing air after dedusting and heat the air after dedusting and make the heating part of dry high temperature air.

Tumbling-box washing machine 1 has the guidance panel 8 on the top be arranged on before basket 2.User can select the pattern of the running process (course) of tumbling-box washing machine 1 or various function on guidance panel 8.Guidance panel 8 comprises control circuit portion 81.The information that the display part display user that control circuit portion 81 possesses at guidance panel 8 inputs.In addition, control circuit portion 81 optical sensor 72 that also can use from the liquid level sensor such as the liquid level detected in tank 31, the turbidity sensor that detects the turbidity of cleaning solution or receive detection signal as the electrode sensor 73 that the conductive sensor of the electrical conductivity detecting cleaning solution uses.If the running being set tumbling-box washing machine 1 by guidance panel 8 is started, then control circuit portion 81 is according to these detection signals, controls the draining valve 75 possessed in the electromagnetic valve that possesses in water system 4 or drainage system 5.Automatically the motor 33 controlled by control circuit portion 81, water system 4, drainage system 5 and drying system 6, according to pattern setting or control program coordinate operation, at least perform washing procedure, rinsing process, dehydration procedure and baking operation.

Water system 4 comprises the supply channel 41 be connected with tank 31 and the washing agent resettlement section 42 of accommodating washing agent.Water system 4, by the on-off action of electromagnetic valve, in time supplies water (solid arrow with reference in Fig. 1) to tank 31 via supply channel 41.In addition, the tumbling-box washing machine 1 shown in Fig. 1 can utilize the water supply of water system 4, and the washing agent in the washing agent resettlement section 42 arranged by local crosscut supply channel 41 is in time put in tank 31.

Drainage system 5 comprises first pipeline 51 with the end be connected with the outlet 311 of tank 31 and the draining control unit 7 be connected with the other end of the first pipeline 51.Draining control unit 7 receives the cleaning solution from tank 31.Drainage system 5 is also included in the second pipeline 52 extended between circulating pump 71 and tank 31 that draining control unit 7 possesses.The circulating pump 71 of tumbling-box washing machine 1 is fixed on platen 712.One end of the second pipeline 52 is connected to the discharge opening of circulating pump 71.In addition, the other end of the second pipeline 52 is connected to the inflow entrance 312 of tank 31.Tank 31, first pipeline 51, draining control unit 7 and the second pipeline 52 form the circulation road of cleaning solution.Circulating pump 71 makes cleaning solution flow from outlet 311 to inflow entrance 312/circulate in circulation road.

Draining control unit 7, except comprising circulating pump 71, the electrode sensor 73 also comprise optical sensor 72 that the turbidity sensor as the turbidity detecting cleaning solution uses, using as the conductive sensor of the electrical conductivity detecting cleaning solution, is externally discharged the discharge pipe line 74 of cleaning solution and is arranged on the draining valve 75 of middle part of discharge pipe line 74.Draining valve 75 makes discharge pipe line 74 opening and closing.Draining control unit 7 also comprises the filter house 76 of trapping velveteen (Soft flocks etc.) contained from the cleaning solution that the first pipeline 51 flows into.

Draining valve 75 is such as opened at the end of washing procedure or at the end of rinsing process.Its result, cleaning solution flow into draining control unit 7 from the first pipeline 51.Afterwards, cleaning solution is discharged to outside be subjected to the Transformatin of velveteen by filter house 76 after.

When draining valve 75 is closed, circulating pump 71 works, the cleaning solution in tank 31 flow into draining control unit 7 by the first pipeline 51.Afterwards, the dirty composition of cleaning solution is removed by the filter house 76 be arranged in draining control unit 7.Flow through the cleaning solution of filter house 76, flow in circulating pump 71 by the aspiration 711 be connected with the pump orifice of circulating pump 71.Afterwards, cleaning solution is turned back in tank 31 by the second pipeline 52 be connected with the discharge opening of circulating pump 71.During execution washing procedure or rinsing process, also repeatedly can carry out the circulation of above-mentioned cleaning solution as required.The iterative cycles of cleaning solution will contribute to high-quality washing procedure or rinsing process.

The variable speed of circulating pump 71.If the speed setting of circulating pump 71 must higher (such as 3500rpm), the cleaning solution flow in the inflow entrance 312 of tank 31 can along moving towards the track in swing roller 32 (the arrow Fi with reference in Fig. 1).On the other hand, if the speed setting of circulating pump 71 must lower (such as 1000rpm), flowing into cleaning solution in the inflow entrance 312 of tank 31 will flow in the space that formed between swing roller 32 and tank 31 (the arrow Fo with reference in Fig. 1).

Circulating pump 71 is low speed rotation when at least one of them the operation of such as washing procedure and rinsing process starts.Its result, the softener of the high concentration after not having the washing agent of dissolving or softener just to drop at the end of can suppressing to wash is scattered on the washings in swing roller 32.

The cleaning solution flow in the space between swing roller 32 and tank 31 is discharged to drainage system 5 from outlet 311, and again turns back to the inflow entrance 312 (tank Inner eycle operation) of tank 31.By tank Inner eycle operation repeatedly, thus promote that the dissolving of washing agent and/or the concentration of softener become even.Thus, the problem of the stain of the washings caused by softener of washing agent or high concentration because not having dissolving can be avoided preferably.

The tank Inner eycle operation water process be set in such as washing procedure and/or rinsing process is ideal after carrying out for about 10 seconds.Replace, tank Inner eycle operation also can start when the liquid level at about 40mm place from the lower end of tank 31 such as being detected.Its result, can suitably avoid circulating pump 71 to work during cleaning solution is not fully filled in circulating pump 71.Like this, abnormal temperature and the work of circulating pump 71 under abnormal temperature of the abnormal sound caused by the cavitation of circulating pump 71 (cavitation), the circulating pump 71 caused by amount of liquor deficiency can be avoided.

Tumbling-box washing machine 1 also can possess the pump supplying bath water to tank 31.Tank Inner eycle operation also can be performed after bath water is fed in tank 31 by pump.Thus, action when bath water is different from circulating pump 71 for using pump, thus suppress the generation bringing unhappy huge noise to user.

Also the operation by guidance panel 8 sets reservation running to tumbling-box washing machine 1.When running preengage by tumbling-box washing machine 1, tank Inner eycle operation can be carried out during such as at ordinary times 2 times longer.Its result, can when preengaging standby (from after book setting to tumbling-box washing machine 1 is actual action during) dissolving cured preferably washing agent.Thus, sufficient cleaning force can be obtained during reservation running, and reduce undissolved detergent amount.

Tumbling-box washing machine 1 also can possess temperature sensor as required.Also according to the temperature of the cleaning solution utilizing temperature sensor measurement to arrive, the time of implementation length of tank Inner eycle operation can be changed.Such as, when the temperature that temperature sensor detects cleaning solution is 5 DEG C, the double time span that tank Inner eycle operation is performed the temperature such as detecting cleaning solution when being 20 DEG C.Its result, even if under low water temperature, washing agent also can fully dissolve.

Fig. 2 is the sectional view of the basket of the draining control unit 7 shown in Fig. 1.Fig. 2 (a) represents the section of the wherein side of basket.Fig. 2 (b) represents the section of the opposite side of basket.

Draining control unit 7 comprises basket 70.Basket 70 is provided with the circulating pump 71 shown in Fig. 1, optical sensor 72, electrode sensor 73, discharge pipe line 74, draining valve 75 and filter house 76.Basket 70 comprises the straight sections 701 extended in the horizontal direction.Straight sections 701 has the end be connected with the first pipeline 51.Basket 70 also comprises the receipts filling tube part 702 be connected with the other end of straight sections 701.Receive filling tube part 702 from the connecting portion of straight sections 701 extend obliquely upward.Basket 70 also comprises the filter house 76 be housed in filling tube part 702.Filter house 76 removes velveteen from cleaning solution.Straight sections 701 and to receive filling tube part 702 shaping integratedly and form a pipeline.

Roughly the straight sections 701 of circular tube shaped has smooth inner face 772.The receipts filling tube part 702 that smooth inner face 772 is swum downwards from the position, midway of straight sections 701 extends.Along the smooth inner face 772 that the horizontal plane of the central shaft by straight sections 701 extends, form the smooth belt-like zone to receiving filling tube part 702 extension.For the inner face 772 of the injection of the light of optical sensor 72 and the smooth of reception, the unnecessary refraction of the IR that can prevent optical sensor 72 from using.

Straight sections 701 is formed with a pair through hole 773.Electrode sensor 73 is inserted with in through hole 773.The electrode section of electrode sensor 73 is outstanding in straight sections 701, and contacts with the cleaning solution comprised in straight sections 701.

The first opening portion 774 be connected with discharge pipe line 74, the second opening portion 771 be connected with the pump orifice of circulating pump 71 is formed below the inner space of receiving filling tube part 702.First opening portion 774 and the second opening portion 771 are arranged on the face relative with through hole 773 of straight sections 701.First opening portion 774 forms the connecting portion be connected with discharge pipe line 74.In addition, the second opening portion 771 forms the connecting portion be connected with circulating pump 71.

Filter house 76 comprises the cap 704 forming cancellous filter 776 and be connected with filter 776.Cap 704 is sealably connected to the top end opening portion of receiving filling tube part 702.Form filter 776 to remove velveteen.Cap 704 comprises pinches the portion of getting 705.Pinch the portion of getting 705 to extend along the axially outside of receiving filling tube part 702 from the outer surface of cap 704.Filter house 76 can receive disassembled and assembled freely in filling tube part 702.Therefore, user can pinch portion of getting 705, easily from receipts filling tube part 702, takes out filter house 76.

Fig. 3 is the top view of draining control unit 7.Fig. 4 is the front view of draining control unit 7.Fig. 5 is the side view of the draining control unit 7 seen from circulating pump 71 side.Fig. 6 is the side view of the draining control unit 7 seen from electrode sensor 73 side.

Fig. 3, Fig. 5 and Fig. 6 partly show the first pipeline 51.Cleaning solution flows into draining control unit 7 from tank 31 by the first pipeline 51.Optical sensor 72 detects the turbidity of the cleaning solution flowing into draining control unit 7.

Fig. 7 represents the optical sensor 72 in the straight sections 701 of the basket 70 being arranged on draining control unit 7.Fig. 8 is the longitudinal section (Fig. 8 (a)) of optical sensor 72, front view (Fig. 8 (b)), right side view (Fig. 8 (c)), left side view (Fig. 8 (d)) and top view (Fig. 8 (e)).Fig. 9 is the longitudinal section (Fig. 9 (a)) of the supporter that optical sensor 72 possesses, front view (Fig. 9 (b)), right side view (Fig. 9 (c)), left side view (Fig. 9 (d)), top view (Fig. 9 (e)) and upward view (Fig. 9 (f)).

Optical sensor 72 comprises the light-emitting component 721 of injection IR and receives the photo detector 722 of the IR penetrated from light-emitting component 721.The light-emitting component 721 and the photo detector 722 that are arranged on the outside of straight sections 701 are mutually opposing, make the light path forming IR between light-emitting component 721 and photo detector 722.Straight sections 701 adopt make IR through material.The IR carrying out self-emission device 721 is by being filled in the cleaning solution in the space that surrounded by the wall portion of straight sections 701.When the turbidity of cleaning solution is larger, the light quantity arriving the IR of photo detector 722 reduces, and when the turbidity of cleaning solution is less, the light quantity arriving the IR of photo detector 722 increases.Like this, optical sensor 72 as detect cleaning solution turbidity turbidity sensor and play function.

Optical sensor 72 also comprises the supporter 723 for keeping light-emitting component 721 and photo detector 722.The supporter 723 had in the roughly cross section of U-shaped comprises: the first support portion 724 supporting light-emitting component 721; Support the second support portion 725 of photo detector 722; And connect the bridge formation portion 726 of the first support portion 724 and the second support portion 725.Light-emitting component 721 remains on opposite position with photo detector 722 by bridge formation portion 726.Bridge formation portion 726 above straight sections 701 extends at a right angle with the axle of straight sections 701.

In first support portion 724 except being configured with light-emitting component 721, be also configured with the circuit substrate 727 for making light-emitting component 721 penetrate IR.In second support portion 725 except being configured with photo detector 722, be also configured with the circuit substrate 728 of the light quantity formation voltage signal of the IR for receiving according to photo detector 722.In addition, optical sensor 72 also comprises the electric wire 729 of powering to circuit substrate 727,728.The longitudinal axis of the circuit substrate 727,728 (with reference to Fig. 7 and Fig. 8) of thin sheet form extends along the vertical direction.

First support portion 724 has the medial surface 241 opposite with the second support portion 725.Medial surface 241 comprises the lens section 211 of light-emitting component 721.From directive second support portion, IR scioptics portion 211 725 that light-emitting component 721 penetrates.Lens section 211 swells slightly relative to other parts of medial surface 241.The edge vertically extended along medial surface 241 is formed with the first flank 242.First flank 242 from medial surface 241 to the inside (central axis direction of straight sections 701) give prominence to.

Second support portion 725 has the medial surface 251 opposite with the first support portion 724.Medial surface 251 comprises the lens section 221 of photo detector 722.The IR scioptics portion 221 penetrated from light-emitting component 721 arrives photo detector 722.Lens section 221 swells slightly relative to other parts of medial surface 251.The edge vertically extended along medial surface 251 is formed with the second flank 252.Second flank 252 from medial surface 251 to the inside (central axis direction of straight sections 701) give prominence to.

The outside (outer surface) being formed with the tube wall part of the straight sections 701 of smooth inner face (inner surface) 772 is also formed flatly.Therefore, the IR penetrated from light-emitting component 721 can not produce because of two walls of straight sections 701 and unnecessarily reflect.Supporter 723 is embedded in straight sections 701 from top downwards.Light-emitting component 721 is from straight sections 701 outside injection IR.Photo detector 722 is at straight sections 701 external reception IR.After supporter 723 is chimeric with straight sections 701, the first flank 242 of the first support portion 724 and the second flank 252 of the second support portion 725 are connected to the smooth outside of straight sections 701.First flank 242 and the second flank 252, makes the first support portion 724 and the medial surface 241,251 of the second support portion 725 and the smooth outside of straight sections 701 isolate.Its result, inhibits the damage of lens section 211, the 221 and straight sections 701 caused because of supporter 723 and the Qian He of straight sections 701.Therefore, the pressure (inlay resultant force) between flank 242,252 and the outside of straight sections 701 also can be set higher.Like this, supporter 723 can be fixedly mounted in straight sections 701.

At the central portion in the bridge formation portion 726 of supporter 723, be formed with the collecting wall 261 of the ring-type extended along the vertical direction.The collecting wall 261 of ring-type forms the receiving space 263 of cylindrical shape together with the loading plate 262 above formation bridge formation portion 726.Loading plate 262 is formed with through hole 264.Through hole 264 is communicated with receiving space 263.Straight sections 701 comprises the protuberance 265 of the cylindrical shape extended upward.After supporter 723 is chimeric with straight sections 701, protuberance 265 is inserted in receiving space 263, abutting with below loading plate 262 above of protuberance 265.Protuberance 265 is formed with the screw hole extended downwards.The screw hole being inserted into screw in the through hole 264 of loading plate 262 and protuberance 265 screws togather.Thus, supporter 723 is securely fixed in straight sections 701.Accept to lower junks such as the dust of part of the straight sections 701 being provided with supporter 723 or water droplets across the loading plate 262 above light-emitting component 721 and photo detector 722.

Referring again to Fig. 2 to Fig. 6.Relative to optical sensor 72 slightly by the draining valve 75 that side, downstream is arranged, be connected with the basket 70 of draining control unit 7 by discharge pipe line 74.When draining valve 75 is opened, straight sections 701 and receive the inner cleaning solution contained in filling tube part 702 and be discharged to outside by discharge pipe line 74.The link position of discharge pipe line 74 and basket 70 can be located at receive filling tube part 702 base end part near.Its result, by opening draining valve 75, receiving the connecting portion periphery of filling tube part 702 and receipts filling tube part 702 and straight sections 701, what produce cleaning solution when working with circulating pump 71 flows to reverse flow of liquor.

The position compared slightly by side, downstream is provided with electrode sensor 73 with the link position receiving filling tube part 702 with discharge pipe line 74.Electrode sensor 73 is configured in side, downstream compared with optical sensor 72.Optical sensor 72 as detect cleaning solution turbidity turbidity sensor and play function.Electrode sensor 73 as detect cleaning solution electrical conductivity conductive sensor and play function.

Electrode sensor 73 comprises pair of end daughter board 731,732.Terminal board 732 is configured in side, downstream compared with terminal board 731.Two ends daughter board 731,732 is connected to electric wire 733, to provide high-frequency ac voltage to terminal board 731,732.The frequency of the voltage applied and amplitude, as long as the electrical conductivity measuring cleaning solution is then not particularly limited.

Figure 10 is the skeleton diagram of terminal board 731.Figure 10 (a) is the side view of terminal board 731.Figure 10 (b) is the front view of terminal board 731.Simultaneously with reference to Figure 10, Fig. 3 and Fig. 6.In addition, the shape of the terminal board 732 in downstream that illustrates of composition graphs 2 to Fig. 6 and large I identical with terminal board 731.

Terminal board 731 is formed by a metallic plate.Terminal board 731 forms bending structure.The edge part 735,736 of terminal board 731 bends to equidirectional for boundary with the folding line 734 extended along the vertical direction.Therefore, for the bending moment (bending moment) of the axle around crosscut folding line 734, terminal board 731 has higher rigidity.The connecting portion 737 be connected with electric wire 733 is formed on the top of terminal board 731.

The face of the side contrary with the overbending direction of edge part 735,736 of terminal board 731 is formed with discoideus heavy section 738 and columned electrode section 739.Terminal board 731 is connected with the base end part of electrode section 739 by heavy section 738.Chimeric on the base end part of electrode section 739 have O type ring 371.Electrode section 739 is inserted in the through hole 773 (with reference to Fig. 2) that the straight sections 701 of the basket 70 of draining control unit 7 is formed.

Terminal board 731 is formed with a pair through hole 310.The through hole 310 of one of them is positioned at the top of electrode section 739.Another through hole 310 is positioned at the below of electrode section 739.A pair through hole 310 and electrode section 739 arrange along the vertical direction.The line parallel of the central point of folding line 734 and link a pair through hole 310.The fixture of bolt and so on is inserted with in through hole 310.Like this, through hole 310 plays function as being used for terminal board 731 to be arranged on the fixed part on the outside of straight sections 701.

If utilize fixture that terminal board 731 is crimped on the outside of straight sections 701, then the O type ring 371 be arranged on the base end part of electrode section 739 is compressed.Restoring force and the fixture inserted in through hole 310 of O type ring 371 make terminal board 731 produce bending moment.The folding line bending extended in the orientation at a pair through hole 310 by making the left and right edges of terminal board 731, terminal board 731 has higher rigidity relative to bending moment.Therefore, terminal board 731 can be fixedly mounted on the outside of straight sections 701.Its result, the O type ring 371 being arranged on the base end part of electrode section 739 is compressed because being subject to the effect of stronger power, thus plays high sealing performance.Like this, the through hole 773 that cleaning solution can be suppressed aptly to pass through straight sections 701 is formed and leaking.In addition, in the present embodiment, folding line 734 is vertical with the axle of bending moment, but folding line 734 is not particularly limited with the angle of reporting to the leadship after accomplishing a task of the axle of bending moment.In addition, in the present embodiment, illustrate that through hole 310 is as fixed part, but also can replace, adopting such as utilizes fixture (clamp) terminal board 731 to be crimped on the fixing gimmick of the outer wall of straight sections 701, or terminal board 731 can be crimped on other fixing gimmicks of the outer wall of straight sections 701 to make the environment-development of O type wave sealing function by employing with enough large power.In addition, when use fixture time, terminal board 731 played function by the part of holder as fixed part.

Figure 11 is the sectional view of the straight sections 701 being provided with terminal board 731,732.Figure 11 (a) is positioned at the sectional view around the terminal board 731 of side, upstream and electrode section 739.Figure 11 (b) is positioned at the sectional view around the terminal board 732 of side, downstream and electrode section 739.

The electrode section 739 that the smooth inner face 772 of crosscut straight sections 701 is inner outstanding to straight sections 701 contacts with cleaning solution contained in straight sections 701.Apply high-frequency ac voltage by electric wire 733 pairs of terminal boards 731,732, the electrical conductivity (impedance (impedance)) of cleaning solution existing between pair of electrodes portion 739 is measured.

Figure 12 is the schematic diagram of the flowing of cleaning solution around electrode section 739.In addition, Tu12Zhong, to the electrode section label symbol 739a of upstream, to the electrode section label symbol 739b in downstream.

As shown in figure 12, pair of electrodes portion 739a, 739b is arranged along the length direction of straight sections 701.The plane P defined by the axle of pair of electrodes portion 739a, 739b and the axle of straight sections 701 almost parallel.The electrode section 739a of upstream is by cleaning solution above-below direction shunting dynamic for the axial flow along straight sections 701.Therefore, the flow of the cleaning solution of intersecting plane P reduces.Its result, in the space between electrode section 739a, 739b (such as more than 15mm and the space of below 30mm) being suitable for the electrical conductivity measuring cleaning solution, the mobility of cleaning solution reduces.Like this, the flowing being suitable for the cleaning solution measuring electrical conductivity can be obtained.

In addition, as shown in figure 12, the plane P comprising the axle of pair of electrodes portion 739a, 739b is horizontal plane.It is preferable that, the top, inner space of the equal not crosscut straight sections 701 of pair of electrodes portion 739a, 739b is (because the design reasons of draining control unit 7 space of air trapping likely occurs (such as, the region of the upside 1/5 in the inner space of straight sections 701)) and the bottom, inner space (because the design reasons of draining control unit 7 likely piles up the space (region of the downside 1/5 in the inner space of such as, straight sections 701) of dirty composition) of straight sections 701.Its result, whole of the ledge of electrode section 739a, 739b contacts with the cleaning solution in straight sections 701.Therefore, the impact of air on the measurement of electrical conductivity in straight sections 701 is inhibited.In addition, when electrode section 739a, 739b protrude from the region of the upside 4/5 in the inner space of straight sections 701, the dirty composition piled up in straight sections 701 can be inhibited on the impact of the measurement of electrical conductivity.

Figure 13 is the flowing of the cleaning solution schematically shown around optical sensor 72 and electrode sensor 73.Be composition graphs 7 to Fig. 9 and the light path 250 of IR between the light-emitting component 721 of the optical sensor 72 illustrated and photo detector 722 shown in Figure 13.In addition, identical with Figure 12, to the electrode section label symbol 739a being arranged at side, upstream, to the electrode section label symbol 739b being arranged at side, downstream.

The upstream-side-end 277 of the smooth inner face 772 formed at the internal face of straight sections 701 to prevent the unnecessary refraction of the IR forming light path 250, swells from other internal face.Therefore, upstream-side-end 277 confuses flow of liquor.Therefore, in order to make flow of liquor entirely arrive light path 250, upstream-side-end 277 is formed in fully ideal away from the position of the side, upstream of light path 250.Now, the cleaning solution of crosscut light path 250 becomes the liquid stream of the measurement of the turbidity being suitable for cleaning solution, and wherein, the turbidity of cleaning solution is the light quantity of the IR of the photo detector 722 of the optical sensor 72 illustrated according to arriving composition graphs 7 to Fig. 9 and estimative.The IR of optical sensor 72 can not bring any impact to the flowing of cleaning solution.Therefore, the flow of liquor after rectification arrives electrode section 739a, 739b.

Illustrated by conjunction with Figure 12, by the electrode section 739a of upstream, a part for the liquid stream parallel with the direction of principal axis of straight sections 701 is shunted up and down.Its result, flow of liquor is disturbed.The confusion of the flow of liquor caused by electrode section 739a is that the side, downstream of the optical sensor 72 illustrated at composition graphs 7 to Fig. 9 produces, and therefore brings impact to the measurement of the turbidity of optical sensor 72 hardly.

Illustrated by conjunction with Figure 12, the axle of the plane P defined by the axle of electrode section 739a, 739b and straight sections 701 is almost parallel.Therefore, such as, when make cleaning solution reflux in straight sections 701 (direction of outlet from straight sections 701 towards tank 31 311 (with reference to Fig. 1)) time, although flow of liquor is shunted by electrode section 739b up and down, but because electrode section 739a overlaps with electrode section 739b on the flow direction of cleaning solution, so can not confuse flow of liquor to transition.Therefore, even if when cleaning solution refluxes, also can with the turbidity of higher accuracy detection by the cleaning solution of light path 250.

Top edge 391 on the border of the upside of the smooth inner face 772 of regulation and specify lower limb 392 place on border of downside of smooth inner face 772, straight sections 701 forms the cross-section profile shape (with reference to Fig. 7) being bent into concavity.Compared with other parts, flow of liquor is more easily trapped in the part forming this bending cross-section profile shape.As shown in figure 13, the part that electrode section 739a, 739b are configured to its cross section enters in smooth inner face 772.Near the top edge 391 be clipped in the middle by electrode section 739a, 739b, cleaning solution is especially easily detained, and therefore can obtain the liquid stream of the lazy flow being suitable for the electric conductivity measuring cleaning solution.In addition, the plane P specified between electrode section 739a, 739b and top edge 391 almost parallel, improve the certainty of measurement of electrical conductivity thus further.

Referring again to Fig. 1 to Fig. 5.The downstream part of electrode sensor 73 is provided with circulating pump 71.Between circulating pump 71 and the basket 70 of draining control unit 7, be provided with aspiration 711, this aspiration 711 comprises the end be connected with the pump orifice of circulating pump 71 and the other end be connected with the second opening portion 771 on the basket 70 being formed in draining control unit 7.The second pipeline 52 extended from the discharge opening of circulating pump 71 is connected with the inflow entrance 312 be formed in tank 31.

Figure 14 schematically shows the top view from electrode sensor 73 to the flow of liquor of circulating pump 71.Come together with reference to Figure 14, Fig. 1 and Fig. 2.Aspiration 711 is shown with in Figure 14.As shown in figure 14, electrode sensor 73, be arranged on side, upstream as compared to the connecting portion 771 (in fig. 2, being illustrated as the second opening portion 771) of aspiration 711 and draining control unit 7.In addition, identical with Figure 12, to the electrode section label symbol 739a being arranged at side, upstream, to the electrode section label symbol 739b being arranged at side, downstream.

Form the straight sections 701 of the basket 70 of draining control unit 7 and receive filling tube part 702, overlooking and form straight stream (in Figure 14, representing straight sections 701 and the border of receiving filling tube part 702 with dotted line).Aspiration 711 is connected to straight sections 701 and receives the straight stream that formed of filling tube part 702.Aspiration 711 is to from straight sections 701 and receive the different direction of the bearing of trend of the straight stream that filling tube part 702 is formed (being right angle orientation in the structure of the draining control unit 7 shown in Figure 14) and extend.Cleaning solution along straight flow path is subject to the suction force of self-circulating pump 71 and changes flow direction, flows to aspiration 711.Electrode sensor 73 is given prominence to from the inner face of the straight sections 701 of the side relative with connecting portion 771.In addition, " inner face of the side relative with connecting portion 771 " refers to the inner face region of receiving filling tube part 702 and/or straight sections 701, this inner face region is present in when separating straight sections 701 along the longitudinal axis of straight sections 701 and receipts filling tube part 702 and receive filling tube part 702, away from the inner face of the side, position of connecting portion 771, and with the axle of aspiration 711 for basic point, be positioned at 3 times of upstreams to 4 times of length and/or the downstream of the internal diameter of such as aspiration 711.It is preferable that, refer to the axle of aspiration 711 as basic point, be positioned at the inner face region of the upstream of 3.5 times of length of the internal diameter of aspiration 711 and/or the receipts filling tube part 702 in downstream and/or straight sections, more preferably, to refer to the axle of aspiration 711 as basic point, be positioned at the inner face region of the upstream of 3 times of length of the internal diameter of aspiration 711 and/or the receipts filling tube part 702 in downstream and/or straight sections 701.Electrode section 739a, the 739b of electrode sensor 73 are outstanding from this inner face region.

Arbitrfary point P1 on the cross section C of the pipeline near the electrode sensor of crosscut shown in Figure 14 73.Point P1 is the arbitrfary point of the position (that is, near relative with connecting portion 771 face) away from connecting portion 771.At a P1 place, work from the base end part of electrode section 739a, 739b towards the stream power V1 of the cleaning solution in the direction of top ends.Therefore, by electrode sensor 73 is arranged on the position relative with connecting portion 771, can promote to remove the velveteen be hooked on electrode sensor 73.

As mentioned above, electrode section 739a, 739b form protuberance in straight sections 701.Therefore, flow into contained velveteen in the cleaning solution of draining control unit 7 to be easily hooked on electrode section 739a, 739b.But by stream power V1, the velveteen be hooked on electrode section 739a, 739b is removed from electrode section 739a, 739b with comparalive ease.In addition, as shown in Figure 2, the part being housed in the filter house 76 (with reference to Fig. 1) in filling tube part 702 is present between electrode sensor 73 and connecting portion 771.In fig. 14, filter house 76 is diagrammatically represented with shaded area.Cleaning solution by after the electrode sensor 73 that is positioned at the upstream position of filter house 76, before arrival is positioned at the aspiration 711 of the downstream position of filter house 76, by being arranged on the filter house 76 received in filling tube part 702.Therefore, velveteen is being filtered portion 76 and is catching after electrode section 739a, 739b removing.In addition, because filter house 76 plays the function hindering the flowing of cleaning solution, therefore the flowing of the cleaning solution around rear electrode portion has just been stopped reducing rapidly at circulating pump 71.

Figure 15 illustrates to utilize circulating pump 71 and draining valve 75 to remove the schematic diagram of velveteen.Figure 15 (a) schematically shows the top view from electrode sensor 73 to the flow of liquor of circulating pump 71.Figure 15 (b) schematically shows the top view from electrode sensor 73 to the flow of liquor of draining valve 75.Come together with reference to Figure 15, Fig. 1.In addition, the aspiration 711 forming the stream arriving circulating pump 71 and the discharge pipe line 74 forming the stream arriving draining valve 75 have been shown in Figure 15.In addition, identical with Figure 12, to the electrode section label symbol 739a of upstream, to the electrode section label symbol 739b in downstream.In addition, the schematic diagram shown in Figure 15 (a) with Figure 14 is identical, is illustrated to carry out contrasting with the nowed forming of the cleaning solution shown in Figure 15 (b).

As shown in Figure 15 (a), electrode sensor 73 relative to discharge pipe line 74 connecting portion 774 (the first opening portion 774) and be arranged on downstream, and relative to aspiration 711 connecting portion 771 (the second opening portion 771) and to be arranged on upstream ideal.By the configuration like this of electrode sensor 73, at the pipeline portions that electrode section 739a, 739b are outstanding, when draining valve 75 is opened, as shown in Figure 15 (b), the flow of liquor that flow of liquor when generation and circulating pump 71 work is reverse.Like this, the velveteen be hooked on electrode section 739a, 739b can easily remove from electrode section 739a, 739b.

Shown in Figure 16 is circulating pump 71.Figure 16 (a) is the sectional view of circulating pump 71.Figure 16 (b) is the top view of circulating pump 71.Figure 16 (c) is the schematic diagram of the circulating pump 71 seen from pump orifice side.

Circulating pump 71 comprises the pump case 713 of the outer wall forming circulating pump 71.Pump case 713 inside is provided with bearing dividing plate 714.The inner space of pump case 713 is divided into two spaces by bearing dividing plate 714.Impeller (impeller) 717 is provided with in the space be communicated with pump orifice 715.Be provided with impeller 717 Spatial Adjacency space in be provided with motor 718.As motor 718, such as, can use DC Brushless Motor (DC brushless motor) aptly.Power transmission shaft (shaft) the 719 crosscut bearing dividing plate 714 of motor 718 and extend to the space being provided with impeller 717.The impeller 717 be integrated with 714 one-tenth, bearing dividing plate is supported by power transmission shaft 719.Rotated together with bearing dividing plate 714 by CD-ROM drive motor 718 impeller 717.

Pump case 713 is formed the pump orifice 715 be connected with aspiration 711 and the discharge opening 716 be connected with the second pipeline 52.Pump orifice 715 and discharge opening 716 are communicated with the space being provided with impeller 717.

Mount pad 131 is outstanding to radial direction from the outer surface of pump case 713.The mount pad 131 of the circulating pump 71 shown in Figure 16 comprises 3 significantly outstanding laterally C type installation sheets 132.Installation sheet 132 is fixed on by bolt on the lug boss of platen 712 (with reference to Fig. 1).

Shown in Figure 17 is the structure of the connecting portion of tank 31 and the second pipeline 52.Figure 17 (a) is the top view in the pipe portion (duct) forming connecting portion.Figure 17 (b) is the sectional elevation in the pipe portion shown in Figure 17 (a).Figure 17 (c) is the longitudinal section in the pipe portion shown in Figure 17 (a).

The annular rib 121 that the inflow entrance 312 of tank 31 is given prominence to upward by the outer wall from tank 31 is formed.Inner peripheral surface along annular rib 121 is provided with O type ring 122.O type ring 122 is pressed by pipe portion 520.

Pipe portion 520 comprises the main part 521 bending to L-shaped.Main part 521 comprises the conduit (duct tube) 522 be connected with the second pipeline 52 and second pipeline 523 extended from conduit 522 to inflow entrance 312.The top ends of second pipeline 523 has cyclic lug 525, and this cyclic lug 525 forms the circumferential profile matched with the opening portion of inflow entrance 312.Amount of decrease wall (narrowing wall) 123 is provided with in the inside of cyclic lug 525.Amount of decrease wall 123 has the cross section in the approximate centre position bowing downwards from the inner space of cyclic lug 525 and the pivot direction towards swing roller 32.The two ends of amount of decrease wall 123 are connected to the internal face of cyclic lug 525.O type ring 122 is provided with between cyclic lug 525 and annular rib 121.O type ring 122 is compressed between cyclic lug 525 and annular rib 121, plays function as seal member.

Second pipeline 523 of conduit 520 is adjacent with annular rib 121, and on the heavy section 124 wall portion of tank 31 formed by fixture 125 (be shown with screw in fig. 17 and be used as fixture 125) and being fixed on.

Conduit 520 also comprises outer cover 524.Outer cover 524, together with second pipeline 523, to be formed from the stream formed by conduit 522 bending and towards the stream of inflow entrance 312.By the work of circulating pump 71, cleaning solution flows into inflow entrance 312 from the second pipeline 52 via conduit 520.In addition, circulating pump 71 rotates with the rotating speed of such as 3500rpm.

The inside of tank 31 is provided with swing roller 32.Barrier 126 is provided with on swing roller 32 and between inflow entrance 312.Barrier 126 is supported by the connecting wall 127 be connected with the outer wall of tank 31.Barrier 126 forms narrow and small stream together with amount of decrease wall 123.This narrow and small stream plays function as the jet 129 to jet washing liquid in sink 3.

By the cleaning solution of jet 129 formed by barrier 126 and amount of decrease wall 123, be supplied to the inside of swing roller 32 subsequently by the stream 281 formed between the front bulkhead 128 of a part of outside forming tank 31 and the front bulkhead 321 of swing roller 32.Front bulkhead 128 cooperates with amount of decrease wall 123 and presses O type ring 122.

Jet 129 and swing roller 32 are formed independently.Washings in swing roller 32 does not contact with jet 129.Therefore, jet 129 brings adverse effect to washing procedure, rinsing process or baking operation hardly.Jet 129 also can not damage or stave washings, and damages the outward appearance of washings hardly.In addition, the stream 281 in the downstream of jet 129 is formed by the front bulkhead 128 of tank 31 and the front bulkhead 321 of swing roller 32, does not therefore need the additional structure preventing from leaking.In the structure shown in Figure 17, only use O type ring 122 as seal member.

The front bulkhead 128 of tank 31 and the front bulkhead 321 of swing roller 32 form the export department 282 of ring-type.Have passed the cleaning solution of stream 281, sprayed to the rotary middle spindle of swing roller 32 by the export department 282 of ring-type.The cleaning solution sprayed by export department 282 is sprayed to the inner side rotary area of swing roller 32 efficiently.Like this, have nothing to do with the amount of the washings be housed in swing roller 32, cleaning solution is supplied washings efficiently.

The inside (forming the face of stream 281) of the front bulkhead 128 of tank 31 has inclined plane 283 and flexure plane 284.Make the inclined plane 283 that the sectional area of stream 281 reduces gradually to downstream, the flow velocity of the cleaning solution by stream 281 is increased gradually.Therefore, accelerate to flow to flexure plane 284 by the cleaning solution of stream 281.Flexure plane 284 makes the flow direction of cleaning solution change into towards the direction of the bottom of swing roller 32.Therefore, the flow of liquor of spraying from export department 282 is to the bottom of swing roller 32.Its result, cleaning solution is supplied washings efficiently.

Jet 129 is at the specified scope inner opening of the circumferential direction of sink 3.Connecting wall 127 and barrier 126 make jet 129 towards pivot direction of principal axis opening.Connecting wall 127 and barrier 126 are guided to stream 281 with confusing the cleaning solution flowing into inflow entrance 312 hardly.Cleaning solution spread in the circumferential direction and stably flows into stream 281 before arrival jet 129.Afterwards, the taking a step forward of export department 282 that cleaning solution arrives ring-type is spread in the circumferential direction and flows.Therefore, cleaning solution sprays from whole export department 282, thus has nothing to do with the amount of the washings be housed in swing roller 32, is stably supplied washings.

The outer cover 524 of conduit 520 is formed towards the stream of inflow entrance 312 with simple mounting structure.By suitably specifying to cover the shape of outer cover 524 of inflow entrance 312 and size, the shape of connecting wall 127 and the shape of size and barrier 126 and size, suitable cleaning solution can be realized to the inflow in swing roller 32.By suitably specifying the design parameter of outer cover 524, connecting wall 127 and barrier 126, the liquid stream width of the cleaning solution sprayed from jet 129, liquid stream thickness and liquid flowing speed suitably can be determined.Like this, have nothing to do with the amount of the washings be housed in swing roller 32, cleaning solution is supplied washings efficiently.

The very simple structure of the mounting structure of the outer cover 524 of the conduit 520 shown in Figure 17 or connecting wall 127 and barrier 126, had not only suppressed to leak but also contribute to reduce manufacturing cost.

As mentioned above, conduit 520 utilizes second pipeline 523 and outer cover 524 to be formed towards the stream of inflow entrance 312.As shown in Figure 1, the stream that formed of conduit 520 extends along the outside of tank 31.Therefore, use second pipeline 523 and the smooth pipeline with square-section of outer cover 524, be formed in the narrow and small space between tank 31 and basket 2.Smooth pipeline specifies the flow of liquor that liquid stream is wide and liquid stream is thick of the shape/size being suitable for jet 129.Towards jet 129 after being rectified by the cleaning solution of smooth pipeline.

The front bulkhead 321 of swing roller 32 is formed with multiple ridge 322.Ridge 322 extends in the scope of designated length along the circumferential direction of the front bulkhead 321 of swing roller 32.Multiple ridge 322 in the circumferential direction position and/or the position of radial direction also can be different.Ridge 322 makes the sectional area of the stream 281 in the downstream of jet 129 reduce locally.When making flow path cross sectional area reduce by ridge 322 near export department 282, with when the position deviating from oral area 282 makes flow path cross sectional area reduce by ridge 322, be different from the motion track of the cleaning solution of export department 282 ejection.Therefore, scatter in the scope of the broadness of cleaning solution in swing roller 32 of export department 282 discharge, thus realize supplying cleaning solution efficiently to washings.

The shape of ridge 322 is not limited to the shape shown in Figure 17.Such as, ridge 322 can shape in wave shape, also can be blade-shaped shape.Also the ridge 322 of the arbitrary shape of the motion track that can change the cleaning solution of discharging from export department 282 can be adopted.In addition, the configuration of the ridge 322 of the arbitrary shape of the motion track that can change the cleaning solution of discharging from export department 282 can also be adopted.

Space 266 is formed between barrier 126 and swing roller 32.When circulating pump 71 low-speed running (such as 1000rpm), cleaning solution flows into space 266 from jet 129.Flow into the cleaning solution in space 266 by the outlet 311 of the spatial flow between swing roller 32 and tank 31 to tank 31.

Figure 18 exemplifies the functional structure in control circuit portion 81.

Control circuit portion 81 comprises operational part 813, judging part 814 and signal transmission unit 815.Operational part 813, according to the signal from optical sensor 72 and electrode sensor 73, calculates the amount of the kind of such as washing agent, the concentration of washing agent and dirty composition.

Judging part 814 judges whether to perform the control of specifying according to the result that operational part 813 calculates.Such as, when the amount of the dirty composition that operational part 813 calculates exceedes the threshold value of specifying, judging part 814 allows signal transmission unit 815 send the signal making water system 4 and/or drainage system 5 action.

After signal transmission unit 815 receives the instruction from judging part 814, send the signal making water system 4 and/or drainage system 5 action.Such as, signal transmission unit 815 sends signal to the electromagnetic valve of water system 4 makes electromagnetic valve become open mode, or sends signal to the draining valve 75 of drainage system 5 and make draining valve become open mode.

Come together with reference to Figure 18, Fig. 1.In the process of carrying out washing procedure and/or rinsing process, during the state of setting measurement cleaning solution.Now, send from control circuit portion 81 to circulating pump 71 signal (stop signal) that the action of circulating pump 71 is stopped.After circulating pump 71 stops, the flowing of the cleaning solution in draining control unit 7 stops.Its result, obtains and is suitable for carrying out with optical sensor 72 and/or electrode sensor 73 state measured.But, sometimes also can, after transmission stop signal, cause the flowing of the cleaning solution in draining control unit 7 to continue designated duration because of the inertia motion of circulating pump 71 or the inertia flowing of cleaning solution self.In the above-described embodiment, because filter house 76 is configured near these sensors 72,73, thus stop signal send after the flowing of unexpected cleaning solution than being early stage inhibited.Therefore, can during shorter in the turbidity of higher precision measure cleaning solution and electrical conductivity.In present embodiment, sensor 72,73 downstream position and the side, upstream of the second opening portion 771 (connecting portion 771) for the connection with the aspiration 711 shown in Fig. 2 is provided with filter house 76.Therefore, the impact of the inertia motion of circulating pump 71 or the vibration of circulating pump 71 is relaxed preferably by filter house 76.Like this, the turbidity of precision measure cleaning solution that can be higher and electrical conductivity.

In the above description, the electrode sensor 73 measuring electrical conductivity is illustrated as the sensor protruded from stream, but above-mentioned principle is not limited thereto, also can be applicable to use the physical characteristic in order to detect cleaning solution and the washing machine of any sensor that must directly contact with cleaning solution.

In the above description, optical sensor 72 is the turbidities for measuring cleaning solution, but also can be used for other measurement object.The optical sensor 72 that above-mentioned principle is also applicable to the accumulation for detecting dirty composition and uses, maybe can utilize optical sensor 72 and by other the physical characteristic measured preferably or environmental change.

In the above description, the flow device flowed as making cleaning solution illustrates pump, but also can replace, and utilizes and is arranged on screw in circulation road or stream etc. and cleaning solution is flowed.

The washing machine with following structure is mainly comprised in above-mentioned embodiment.

A kind of washing machine involved in the present invention comprises: the interior pipeline containing cleaning solution; Allow the flow device that described cleaning solution flows in described pipeline; And possess and protrude from the first electrode section in described pipeline and the second electrode section for measuring the electrode sensor of the electrical conductivity of described cleaning solution, wherein, described second electrode section is relative to described first electrode area in downstream, and described first electrode section makes the flow velocity of the described cleaning solution between this first electrode section of inflow and described second electrode section reduce.

According to said structure, cleaning solution contained in pipeline is flowed by flow device.The electrode sensor possessing the first electrode section and second electrode section of giving prominence in pipeline measures the electrical conductivity of the cleaning solution between the first electrode section and the second electrode section.Second electrode section is arranged on the position more further downstream than the first electrode section.First electrode section makes the flow velocity of the described cleaning solution between inflow first electrode section and the second electrode section reduce.Its result, can obtain the flowing of the cleaning solution of the electrical conductivity measurement being suitable for cleaning solution.Like this, the certainty of measurement of the electrical conductivity of cleaning solution can be improved.

In said structure, it is preferable that, described first electrode section and described second electrode section are arranged along the length direction of described pipeline.

According to said structure, the first electrode section makes the flow velocity of the described cleaning solution between inflow first electrode section and the second electrode section reduce further.Therefore, can further improve the certainty of measurement of the electrical conductivity of cleaning solution.

In said structure, it is preferable that, described first electrode section all contacts with described cleaning solution with the part protruding from described pipeline outstanding of described second electrode section.

According to said structure, between the first electrode section and the second electrode section, the intervention of air is suppressed.Its result, provides the stably measured of the electrical conductivity of cleaning solution.

In said structure, it is preferable that, the field of described first electrode section and the upside 4/5ths of described second electrode section in the inner space of described pipeline is given prominence to.

According to said structure, the impact of the dirty composition that the bottom that the measurement of the electrical conductivity of cleaning solution is subject to the pipeline between the first electrode section and the second electrode section is hardly piled up.

In said structure, it is preferable that, is horizontal plane by the axle of described first electrode section and the determined plane of axle of described second electrode section.

According to said structure, the existence of air or the accumulation of dirty composition bring impact to hardly the electrical conductivity measurement of the cleaning solution utilizing the electrode section of length outstanding in pipeline to carry out.Therefore, by increasing the overhang of electrode section, the electrical conductivity of precision measure cleaning solution that can be higher.

In said structure, it is preferable that, described electrode sensor also possesses the O type ring be entrenched on described first electrode section and described second electrode section base end part separately, with be connected to described base end part and be fixed on the terminal board of the outside of described pipeline, wherein, described terminal board has the first fixed part and second fixed part of the described outside for described electrode sensor being arranged on described pipeline, described O type ring is between described first fixed part and described second fixed part, described terminal board has the edge part be bent for boundary with the folding line extended along the orientation of described first fixed part and described second fixed part.

According to said structure, O type ring is compressed between terminal board and the outside of pipeline.Therefore, between the first fixed part and the second fixed part, the restoring force of O type ring is had an effect, and terminal board bears the load of bending moment.Have the terminal board of the folding line extended along the orientation at the first fixed part and the second fixed part and the edge part be bent, the bending moment produced for the restoring force because of O type ring has higher rigidity.Therefore, in order to make the environment-development of O type wave high sealing performance, can by terminal board strongly by the outside being pressed in pipeline.Like this, the leakage of the pipeline portions that cleaning solution can be suppressed aptly to run through from electrode section.

In said structure, it is preferable that, be formed with through hole respectively at described first fixed part and described second fixed part, described folding line is the folding line with the line parallel of the central point linking multiple described through hole.

According to said structure, the rigidity for bending moment of terminal board is enhanced further.

In said structure, it is preferable that, also comprise the filter house removing dirty composition contained in described cleaning solution, this filter house is arranged near described electrode sensor.

According to said structure, filter house plays the effect of the flowing of the cleaning solution in impedance pipeline.Therefore, after flow device stops, the reduction of the mobility of the cleaning solution around electrode sensor can be realized at short notice.Like this, the electrical conductivity of cleaning solution can at short notice and stably measured.

In said structure, it is preferable that, described filter house is positioned at the downstream of described electrode sensor, and is configured in the upstream of described flow device.

According to said structure, filter house plays the effect of impedance flow of liquor between electrode sensor and flow device.Therefore, the impact from flow device of being transmitted by cleaning solution is relaxed.Like this, the measurement of high-precision electrical conductivity can be realized in the short time after making flow device stop.

In said structure, it is preferable that, described pipeline comprises straight sections that described electrode sensor gives prominence to and is connected with this straight sections and is configured in the upstream of described flow device and accommodates the receipts filling tube part of described filter house, wherein, described receipts filling tube part, tilts upward relative to described straight sections.

According to said structure, the bubble flowing into straight sections is flushed to be received filling tube part and is difficult to return from receipts filling tube part.Therefore, bubble is difficult to be trapped in straight sections, thus with the electrical conductivity of high-acruracy survey cleaning solution.And the head receiving the cleaning solution in filling tube part suppresses the unnecessary flow of liquor produced because of the inertia motion of flow device after the signal making flow device stop sends.Like this, the electrical conductivity of cleaning solution is measured with high accuracy.

Claims (8)

1. a washing machine, is characterized in that comprising:

Tank;

Pipeline, interior containing cleaning solution;

Flow device, allows described cleaning solution circulate between described pipeline and described tank;

Electrode sensor, possesses and protrudes from the first electrode section in described pipeline and the second electrode section, for measuring the electrical conductivity of the described cleaning solution flowed in described pipeline; And

Filter house, removes dirty composition contained in described cleaning solution; Wherein,

Described second electrode section, relative to described first electrode area in downstream,

Described first electrode section, makes the flow velocity of the described cleaning solution between this first electrode section of inflow and described second electrode section reduce,

Described filter house is positioned at the downstream of described electrode sensor and is positioned at the upstream of described flow device, and is arranged near described electrode sensor.

2. washing machine according to claim 1, is characterized in that:

Described pipeline comprises straight sections that described electrode sensor gives prominence to and is connected with this straight sections and is configured in the upstream of described flow device and accommodates the receipts filling tube part of described filter house, wherein,

Described receipts filling tube part, tilts upward relative to described straight sections.

3. washing machine according to claim 1, is characterized in that: described first electrode section and described second electrode section are arranged by the length direction along described pipeline.

4. washing machine according to claim 1, is characterized in that: described first electrode section all contacts with described cleaning solution with the part protruding from described pipeline of described second electrode section.

5. washing machine according to claim 4, is characterized in that: the field of described first electrode section and the upside 4/5ths of described second electrode section in the inner space of described pipeline is given prominence to.

6. washing machine according to claim 4, is characterized in that: be horizontal plane by the axle of described first electrode section and the determined plane of axle of described second electrode section.

7. washing machine according to claim 1, is characterized in that, described electrode sensor also possesses:

Be entrenched in the O type ring on described first electrode section and described second electrode section base end part separately; With

Be connected to described base end part and be fixed on the terminal board of the outside of described pipeline, wherein,

Described terminal board has the first fixed part and second fixed part of the described outside for described electrode sensor being arranged on described pipeline,

Described O type ring between described first fixed part and described second fixed part,

Described terminal board has the edge part be bent for boundary with the folding line extended along the orientation of described first fixed part and described second fixed part.

8. washing machine according to claim 7, is characterized in that:

Through hole is formed with respectively at described first fixed part and described second fixed part,

Described folding line is the folding line with the line parallel of the central point linking multiple described through hole.