CN102704241A

CN102704241A - Pump for adding detergent into washing machine accurately

Info

Publication number: CN102704241A
Application number: CN2012101997719A
Authority: CN
Inventors: 王立东; 班永
Original assignee: Wuxi Little Swan Co Ltd
Current assignee: Wuxi Little Swan Co Ltd
Priority date: 2012-06-18
Filing date: 2012-06-18
Publication date: 2012-10-03
Also published as: WO2013189145A1

Abstract

The invention relates to a pump for adding a detergent into a washing machine accurately, and relates to a component of the washing machine. The pump is characterized by comprising a detergent storage container, an addition piston assembly, a motor and a counting device, wherein the detergent storage container is communicated with a cavity of the addition piston assembly; a driving shaft of the motor is connected with a piston of an addition piston part by a crank mechanism; the crank mechanism and the piston are movable components; and a counting trigger component of the counting device is in linkage with the movable components. According to the pump, the pump liquid amount is regular and accurate in the every-time action of the piston, so that the addition accuracy of the detergent is high, and the addition is not influenced by the varieties of the detergents. Simultaneously, the reciprocating action of the piston is controlled, and the action of the piston is counted by using an electromechanical means, so the pump is simple in design structure, reliable in action and low in manufacturing cost.

Description

A kind of laundry detergent is accurately thrown in pump

Technical field

The present invention relates to a kind of part of washing machine, be used for the input pump of the accurate input of washing agent on particularly a kind of automation washing machine.

Background technology

Along with the continuous progress of electrical appliance industry, the new function of new technology emerges in an endless stream.A lot of producers all increase on the washing machine of automation and add the washing agent function automatically; Be at the inner container that a storage washing agent is installed of washing machine generally speaking; When washing machine is worked,, be extracted into a certain amount of washing agent in the wash bucket through various interpolation pumps according to the washing machine laundry amounts information that functional module records such as weigh automatically; Realize the intelligence interpolation of washing agent, its measurement means is to calculate the pump liquid time.

But along with the continuous increase of washing agent brand and kind, original intelligent delivery device in use can demonstrate the inaccuracy problem of throwing in, the time and injected volume is not enough, do not reach laundry effect; The time and throw in excessively, bring difficulty to rinsing, also not environmental protection.The main cause that causes these problems be various washing agent under different temperature, the viscosity of performance is different, existing automatic release device is when adding the different viscosities washing agent, the accuracy of time measurement is relatively poor, addition is widely different.Even, feed back to the adjustment that controller carries out the release time, also can only realize a certain washing agent is reached the effect of accurate input, under different temperatures because the viscosity Changing Pattern that the washing agent of other performances shows is all different through measuring environment temperature.Gu existing apparatus can't be accomplished the accurate input of compatible various different washing agent.

The common way of existing manufacturer is that the appointment washing machine automatic release device of oneself is specified washing agent brand and kind, and the application to the user brings very big inconvenience like this, has influenced popularizing of automatic jettison system.

Summary of the invention

The objective of the invention is to invent a kind of accurate input pump that automatic washing machine is thrown in washing agent automatically that is used for.

For reaching the foregoing invention content, the technological means that the present invention adopted is:

A kind of laundry detergent is accurately thrown in pump; It is characterized in that: comprise the washing agent storage container, throw in piston component, motor and counting device; Described washing agent storage container and the cavity UNICOM of throwing in piston component; The driving shaft of motor connects the piston of throwing in piston region through crank mechanism, and crank mechanism and piston all are movable parts, and the counting trigger unit and the movable part of counting device have interaction relation.

But preferred counting device is the microswitch that is made up of fixed touch plate and movable contact spring, but the counting trigger unit is a movable contact spring; Two contacts are electrically connected with the main control chip of washing machine.

Further preferred: the bar of piston is provided with convexity, but convexity can contact with movable contact spring, but the extreme position of both contact points can let fixed touch plate contact with movable contact spring.

Another kind of scheme: but the main shaft of motor is provided with the convexity that can touch movable contact spring, but but the contacting extreme position and can let fixed touch plate contact of this protruding and movable contact spring with movable contact spring.

Described washing agent storage container has an inlet and liquid outlet, and inlet and liquid outlet all are provided with unidirectional pad.

The present invention is the accurate delivery device of a kind of washing agent that uses piston to carry out pump liquid; Number of times metering according to pump liquid; The technological means by the time metering compared to prior art has made marked progress: because the capacity of piston cavity is fixed; Piston action all is fixing and pump liquid measure accurately each time, as long as the accurate input of washing agent just can be accurately controlled in control to the piston action number of times, not do not influenced on an equal basis by washing agent kind difference, environmental factor.Simultaneously, simple, the reliable in action of control piston reciprocating action and the project organization that adopts electromechanical means that piston action is counted, manufacturing cost are low again.So on the whole, the present invention is easily manufactured, and Mechanical Reliability is good, and the accuracy of washing agent injected volume increases substantially.

Description of drawings

Fig. 1, the embodiments of the invention outline drawing;

Fig. 2, the embodiments of the invention cut-away view;

Fig. 3, the exploded view that the parts of embodiments of the invention are formed.

The specific embodiment

Present embodiment is a kind of concrete realization of structure of the present invention, has adopted modularization, modularization manufacture commonly used in the washing machine industry, and each part is made an integral body that is prone to installation, changes.Certainly, also can adopt the combination of devices of disperseing more, as long as can satisfy annexation of the present invention.

Like Fig. 1, Fig. 2, present embodiment comprises pump case 1, motor 2, crank 3, connecting rod 4, slide block 5, microswitch 6, washing agent storage container 7, unidirectional pad 8, unidirectional pad support 9, spring 12, piston head 10, piston rod 11.

Crank 3, connecting rod 4 are set in the pump case 1, and the cavity of throwing in piston component connects pump case 1 and washing agent storage container, and wherein washing agent storage container 7 is provided with inlet 7a and liquid outlet 7b.

The cut-away view that Fig. 2 shows; Throw in piston component and comprised the piston head 10 that is arranged in the piston cavity 13 and the piston rod 11 at rear portion; Piston rod 11 afterbodys are connected to connecting rod 4; Connecting rod 4 connecting cranks 3, crank 3 is fixed on the main shaft of motor 2, and motor rotates and can finally drive piston head 10 and move reciprocatingly along piston cavity 13 like this.In the practice, be that the technical staff is thinkable easily in the mechanical field, do not do and give unnecessary details the connection details (connecting) of the restriction of the track of piston rod 11 and crank 3, connecting rod 4 as adopting the single-degree-of-freedom hinge.

See in conjunction with Fig. 2 and Fig. 3; The tail end that one slide block 5 is fixed on piston rod 11 is set; And slide block 5 is positioned among the slideway 1a in the pump case 1; Be provided with a breach in this slideway, the moving contact of microswitch 6 is positioned at the breach of slideway 1a, and every reciprocating motion of piston once can both trigger microswitch 2 times back and forth.The input controller that microswitch 6 is electrically connected to washing machine (possibly be independent input controller; Also possibly be by the whole master controller of washing machine; The present invention refers to the controller that control is thrown in the action beginning and stopped; More than two kinds all be suitable for), feed back to the action frequency signal of master controller piston through the break-make electricity.

Unidirectional pad 8 is positioned in the liquid outlet 7b of pump case 1, and spring 12 is mounted on outside the rubber column behind the unidirectional pad 8, and unidirectional pad support 9 is mounted on outside the spring 12, blocks the liquid outlet place at pump case 1.

Course of action of the present invention is following:

When beginning to throw in, controller sends throws in instruction, and control motor 2 rotates; Driving crank 3 rotates; 4 motions of crank 3 drivening rods, connecting rod 4 drives piston cavity 13 the insides of piston rod 11 in pump case 1 and reciprocatingly slides, simultaneously also reciprocating motion in the slideway 1a of pump case 1 of slide block 5; The salient point of slide block 5, the electronic work of break-make is made in the contact that drives microswitch 6.When piston rod 11 drive piston heads 10 are done the action (like the end motion left of accompanying drawing) of pressure in the chamber; The seal cavity that forms between liquid outlet 7b and the pump case 1 can form negative pressure; This moment, the unidirectional pad 8 in inlet 7a place of pump case 1 will compress spring 12, with liquid indentation sealing space; When piston rod 11 drove piston head 10 to the motion of (like figure) right-hand member, the seal cavity that forms between liquid outlet 7b and the pump case 1 can form malleation, and the unidirectional pad 8 in liquid outlet place this moment will compress spring 12, and liquid is extruded.

The counting device of present embodiment has adopted microswitch, and is simple in structure, cost is low, also can use other like more complicated counting devices such as infrared countings.Simultaneously; The structure of flip-flop number; Present embodiment adopts is the slide block 5 with the piston rod synchronization action; Also can use with the rotation of connecting rod 4 or crank 3 and produce other related triggering structures, as on the trigger mechanism that microswitch is set on the working line of crank, working line, being provided with or the like at connecting rod.These forms all satisfy the relation of getting in touch of trigger unit of the presently claimed invention and movable part, therefore also belong to protection scope of the present invention.

The present invention utilizes piston to cause the air pressure change of washing storage container 7 inside, in conjunction with unidirectional pad, makes the action of throwing in washing agent; Through having the microswitch counting of getting in touch with piston action, both combine to realize the accurate control to the washing agent input.The influence that the input pump of this structure is not affected by environment, do not receive detergent characteristics---like viscosity, density etc.---, accurate measurement, reliable in action.

Claims

1. a laundry detergent is accurately thrown in pump; It is characterized in that: comprise washing agent storage container (7), throw in piston component, motor (2) and counting device; Described washing agent storage container has inlet (7a) and liquid outlet (7b), washing agent storage container and the cavity UNICOM of throwing in piston component; The driving shaft of motor connects the piston of throwing in piston region through crank mechanism, and crank mechanism and piston all are movable parts, and the counting trigger unit of counting device and movable part have gets in touch.

2. a kind of laundry detergent according to claim 1 is accurately thrown in pump, it is characterized in that: but described counting device is the microswitch (6) that contains fixed touch plate and movable contact spring, and microswitch is electrically connected with controller.

3. a kind of laundry detergent according to claim 1 is accurately thrown in pump, it is characterized in that: described input piston component contains piston rod (11), and piston rod is provided with slide block (5), and slide block is provided with convexity can trigger microswitch (6).

4. a kind of laundry detergent according to claim 1 is accurately thrown in pump, it is characterized in that: be connected with the male means that can trigger microswitch on the main shaft of described motor (2).

5. a kind of laundry detergent according to claim 1 is accurately thrown in pump, it is characterized in that: described inlet (7a) and liquid outlet (7b) all are provided with unidirectional pad (8).