CN209456750U - Liquid feeding double pump, liquid jettison system, washing machine and dish-washing machine - Google Patents

Abstract

The one side of the utility model provides a kind of liquid feeding double pump comprising: pump case；First cavity and the second cavity；Motor；First transmission system is connected between motor and the first cavity, for the rotational motion of motor to be converted to the change of the first cavity volume；And second transmission system, it is connected between motor and the second cavity, for the rotational motion of motor to be converted to the change of the second cavity volume, wherein, the axis of the axis of motor, the axis of the first cavity and the second cavity is at least parallel two-by-two and two-by-two in the same plane, the axis of the motor passes through its output shaft, and it is parallel that the axis of first cavity with the axis of second cavity reciprocally moves direction respectively.It is arranged as motor, the first cavity and the second cavity, liquid feeding double pump can occupy volume as few as possible.In addition, the utility model also provides a kind of liquid jettison system including the liquid feeding double pump, a kind of washing machine and a kind of dish-washing machine.

Description

Liquid feeding double pump, liquid jettison system, washing machine and dish-washing machine

Technical field

The utility model relates to a kind of liquid feeding double pump, a kind of liquid jettison system including the liquid feeding double pump is further related to, one Kind includes the washing machine and a kind of dish-washing machine including the liquid jettison system of the liquid jettison system.

Background technique

Liquid dispensing is carried out usually using fluid filling pump for household electrical appliance such as washing machine, dish-washing machines.With washing machine, wash the dishes Machine is more and more intelligent, inside it is also more and more for realizing intelligentized amount of parts, will certainly occupy very one big Divide space, nervous space relatively requires internal components to have smaller volume under the premise of meeting function.

Utility model content

The one side of the utility model provides a kind of liquid feeding double pump comprising: pump case；First cavity and the second cavity； Motor；First transmission system is connected between motor and the first cavity, for the rotational motion of motor to be converted to the first chamber The change of body volume；And second transmission system, it is connected between motor and the second cavity, for by the rotational motion of motor Be converted to the change of the second cavity volume, wherein the axis of the axis of motor, the axis of the first cavity and the second cavity at least two Two is parallel and two-by-two in the same plane, and the axis of the motor passes through its output shaft, the axis of first cavity and described It is parallel that the axis of second cavity reciprocally moves direction respectively.

It is arranged as motor, the first cavity and the second cavity, liquid feeding double pump can occupy volume as few as possible. In addition, liquid feeding double pump perpendicular to motor, the first cavity, the second cavity height in the in-plane direction it is smaller, it is particularly advantageous In being installed in the equipment such as washing machine, dish-washing machine, in such devices, liquid feeding double pump occupies small in size.

In some embodiments, the liquid feeding double pump further includes worm screw, receives the rotational motion of motor；First power train System is connected between the worm screw and the first cavity, and the second transmission system is connected between the worm screw and the second cavity.

Since the first transmission system and the second transmission system are connected to motor via common worm screw, it therefore reduces plus The occupied volume of liquid double pump.

In some embodiments, the first transmission system includes the first worm gear and first gear, and the second transmission system includes the Two worm gears and second gear, the first worm gear are engaged with the worm screw, and are connected to the first cavity, the second worm gear via first gear Engaged with the worm screw, and be connected to the second cavity via second gear, the first worm gear and first gear and the second worm gear with Second gear passes through the first one-way driving mechanism and the connection of the second one-way driving mechanism respectively, so that when worm screw is in the first rotation side Upwards when rotation, the first worm gear transfers torque to first gear by the first one-way driving mechanism, and the second worm gear will not be turned round Square is transmitted to second gear, and when worm screw rotates on the second direction of rotation opposite with the first direction of rotation, the first snail Wheel does not transfer torque to first gear, and the second worm gear transfers torque to second gear by the second one-way driving mechanism.

In some embodiments, the first cavity, motor and the second cavity are seen in the plane perpendicular to the axis of motor is in Product word arrangement, wherein motor is between the first cavity and the second cavity.

The first cavity, motor, the second cavity being arranged so can be more compact.

In some embodiments, the first cavity, motor and the second cavity are in one in the plane perpendicular to the axis of motor Font arrangement, wherein motor is between the first cavity and the second cavity.

The first cavity, motor, the second cavity being arranged so can be conducive to further decrease perpendicular to motor, first Cavity, the second cavity height in the in-plane direction.

In some embodiments, the first cavity and the second cavity, the first transmission system and the second transmission system are opposite respectively It is arranged in the axisymmetrical of motor.

In some embodiments, the first cavity, the first transmission system, motor, the second transmission system and the second cavity be sequentially W-shaped arrangement.

In some embodiments, the liquid feeding double pump further includes sensor-based system, is used to sense the first cavity and the second chamber The change of the volume of body, the motor are direct current generator.

Direct current generator occupies small in size, but is not easy to control, and the first cavity of sensing and the can be sensed by sensor-based system The change of the volume of two cavitys, to control the rotation of direct current generator.

The another aspect of the utility model provides a kind of liquid jettison system comprising liquid feeding double pump as described above.

The another aspect of the utility model provides a kind of washing machine comprising liquid jettison system as described above.

The another aspect of the utility model provides a kind of dish-washing machine comprising liquid jettison system as described above.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Through this specification, the same or similar component has the same or similar appended drawing reference.

Fig. 1 is the perspective view according to the liquid feeding double pump of the first embodiment of the utility model；

Fig. 2 is the decomposition perspective view according to the liquid feeding double pump of the first embodiment of the utility model；

Fig. 3 is according to the perspective view of the liquid feeding double pump of the first embodiment of the utility model, and wherein pump case is removed；

Fig. 4 is according to the top view of the liquid feeding double pump of the first embodiment of the utility model, and wherein pump case is removed；

Fig. 5 be according to the view of the liquid feeding double pump of the first embodiment of the utility model seen along the axis of direct current generator, Wherein pump case is removed；

Fig. 6 is the signal seen along the axis of direct current generator according to the liquid feeding double pump of the first embodiment of the utility model Figure, it illustrates the arrangements of direct current generator, the first cavity and the second cavity, wherein the first transmission system and the second transmission is omitted System；

Fig. 7 is the cutaway top view according to a part of the liquid feeding double pump of the first embodiment of the utility model；

Fig. 8 is the cross-sectional view of the first worm gear and first gear according to the first embodiment of the utility model；

Fig. 9 a is the perspective view according to the first worm gear of the first embodiment of the utility model；

Fig. 9 b is another perspective view according to the first worm gear of the first embodiment of the utility model；

Figure 10 a is the perspective view according to the first gear of the first embodiment of the utility model；

Figure 10 b is another perspective view according to the first gear of the first embodiment of the utility model；

Figure 11 is the top view according to the liquid feeding double pump of the first embodiment of the utility model；

Figure 12 a be according to the side view of the liquid feeding double pump of the first embodiment of the utility model, it illustrates sensor-based system, And pull rod moves to first position；

Figure 12 b be according to the top view of the liquid feeding double pump of the first embodiment of the utility model, it illustrates sensor-based system, And pull rod moves to the second position；

Figure 13 a is the side view cutaway drawing according to the liquid feeding double pump of the second embodiment of the utility model；

Figure 13 b is the view according to the sensor-based system of the second embodiment of the utility model seen along the axis of direct current generator Figure；

Figure 14 is according to the top view of the liquid feeding double pump of the 3rd embodiment of the utility model, and wherein pump case is removed；

Figure 15 is according to the top view of the liquid feeding double pump of the fourth embodiment of the utility model, and wherein pump case is removed.

Reference signs list

Pump case 110

First half-shell body 111

Second half shell 112

End cap 113

Direct current generator 120,220,320,420

First transmission system 130

First worm gear 131

First gear 132

Second transmission system 130 '

Second worm gear 131 '

Second gear 132 '

First ratchet part 1321

First detent portions 1311

First boss 1312

First protrusion 1313

First muscle portion 1322

First concave portion 1323

First shoe cream room C

First cavity 140,340,440

First pull rod 141

Second cavity 140 ', 340 ', 440 '

Second pull rod 141 '

First liquid disengaging portion 150

Second liquid disengaging portion 150 '

Worm screw 160

First sub- sensing element 171

Second sub- sensing element 172

The sub- sensing element 173 of third

First sensing element 271

Second sensing element 272

Specific embodiment

In the following, the liquid feeding double pump of embodiment according to the present utility model is described in detail with reference to the drawings.To make the utility model The purposes, technical schemes and advantages of embodiment are clearer, and the following will be combined with the drawings in the embodiments of the present invention, to this reality It is clearly and completely described with the technical solution in new embodiment, it is clear that described embodiment is the utility model one Section Example, instead of all the embodiments.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in conjunction with attached drawing below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

Terms used herein are intended to explain embodiment, and are not intended to be limited to and/or limit the utility model.It needs to manage Solution, the orientation or positional relationship of the instructions such as term "inner", "outside", "upper", "lower" are orientation based on the figure or position Set the relationship utility model product using when the orientation or positional relationship usually put or those skilled in the art The orientation or positional relationship that usually understands of member, is merely for convenience of describing the present invention and simplifying the description, rather than indicate or It implies that signified equipment or element must have a particular orientation, is constructed and operated in a specific orientation, therefore should not be understood as Limitations of the present invention.

Moreover, defining unless the context otherwise, otherwise singular includes plural form.Throughout the specification, term " comprising ", " having ", etc. herein for specifying depositing for the feature, number, step, operation, component, assembly unit or combinations thereof , but do not preclude the presence or addition of other one or more features, number, step, operation, component, assembly unit or combinations thereof.

In addition, even if the term including the ordinal numbers such as " first ", " second " can be used for describing various parts, but these portions Part is not limited by these terms, and these terms are only used to distinguish an element and other elements.For example, not departing from In the case where the scope of the utility model, the first component can be referred to as second component, and similarly, and second component can be by The referred to as first component.

Fig. 1 and Fig. 2 respectively illustrates perspective view and the decomposition of the liquid feeding double pump of first embodiment according to the present utility model Perspective view.As depicted in figs. 1 and 2, liquid feeding double pump includes pump case 110, motor 120, the transmission of the first transmission system 130, second System 130 ', the first cavity 140, the second cavity 140 ', the first liquid disengaging portion 150, second liquid disengaging portion 150 ' and fixation To the worm screw 160 (participating in Fig. 3, Fig. 4) of motor 120.

Pump case 110 includes first half-shell body 111, the second half shell 112 and end cap 113, first half-shell body 111, second Half shell 112 and end cap 113 cooperate to be fixed to one another and limit for accommodating motor 120, the first and second transmission systems 130, the accommodating chamber of the 130 ', first and second cavitys 140,140 '.First half-shell body 111, the second half shell 112 and end cap 113 Such as it is fixed together by bonding, spiral connection, buckle, welding etc..

In the present embodiment, the first cavity 140 and the second cavity 140 ' and the first transmission system 130 and the second power train System 130 ' is respectively relative to the axis for axis symmetry arrangement of motor 120, and the axis of motor 120 passes through its output shaft.Therefore, the first chamber The structure of body 140 and the second cavity 140 ' and the first transmission system 130 and the second transmission system 130 ' is essentially identical, but this reality With novel without being limited thereto.

Fig. 3 and Fig. 4 respectively illustrates the perspective view and vertical view of the liquid feeding double pump of first embodiment according to the present utility model Figure, wherein pump case 110 is removed.As shown in Figure 3 and Figure 4, the first transmission system 130 is connected in fixed to the defeated of motor 120 Between the worm screw 160 of shaft and the first cavity 140, the first of the first cavity 140 that the rotational motion of motor 120 is converted to The reciprocating motion of pull rod 141, the reciprocating motion of the first pull rod 141 lead to the change of the volume of the first cavity 140.First cavity 140 can also include the first bellows 142, be fixed to the first pull rod 141, and move back and forth with the first pull rod 141, with Realizing the suction and output from the first liquid disengaging portion 150 of liquid, the first liquid disengaging portion 150 is arranged at end cap 113, and And it is in fluid communication with the first cavity 140.In this example, since one end of pull rod 141 moves in a circle, bellows 142 It is deformed during reciprocating motion.

First transmission system 130 includes that first order Worm Wheel System, second level gear drive and third level gear pass It is dynamic.In first order Worm Wheel System, worm screw 160 is fixed to or is integrally formed the output shaft to motor 120, the first worm gear 131 with the driving gear in the gear drive of the second level, i.e. first gear 132 is coaxial to couple, driven in the gear drive of the second level Gear coaxially couples with the driving gear in third level gear drive, and the driven gear in third level gear drive is connected to first Pull rod 141.

As described above, similarly, the second transmission system 130 ' is connected between worm screw 160 and the second cavity 140 ', it will The reciprocating motion of second pull rod 141 ' of the second cavity 140 ' that the rotational motion of motor 120 is converted to.Second transmission system 130 ' include the second worm gear 131 ' coaxially coupled and second gear 132 '.

Transmission system 130,130 ' is not limited to above-mentioned configuration.For example, in another example, the first transmission system 130 and Two transmission systems 130 ' are different.In another example in another example, transmission system 130,130 ' only includes first order worm gear snail Bar transmission, second level gear drive.For another example transmission system 130,130 ' only includes first order worm gear snail in another example Bar transmission.

First cavity 140 is parallel with the direction that the axis of the second cavity 140 ' reciprocally moves respectively.Such as Fig. 3 and Fig. 4 Shown, the axis of motor 120 is parallel with the axis of the axis of the first cavity 140 and the second cavity 140 ', and the first cavity 140, the first transmission system 130, motor 120, the second transmission system 130 ' and the second cavity 140 ' are sequentially in substantially w-shaped arrangement, This is W-shaped to be made of two U-shapeds arranged side by side, and two of them U-shaped has public arm, which includes motor 120.First cavity 140 with the end face opposite with the second pull rod 141 ' of the first pull rod ' opposite end face and the second cavity 140 ' are respectively formed W The end face opposite with output end at the both ends of shape, motor 120 forms W-shaped intermediate ends.

Since such parallel arrangement and such W-shaped arrangement, liquid feeding double pump can more effectively utilize space, realize Integrally-built miniaturization is more advantageous to and is installed on the electrical equipments such as dish-washing machine, washing machine.

Fig. 5 shows the view of the liquid feeding double pump of first embodiment according to the present utility model seen along the axis of motor 120 Figure, wherein pump case 110 be removed, Fig. 6 show the liquid feeding double pump of first embodiment according to the present utility model along motor The schematic diagram that 120 axis is seen, wherein the first transmission system 130 and the second transmission system 130 ' is omitted.Such as Fig. 5 and Fig. 6 institute Show, the first cavity 140, motor 120 and the second cavity 140 ' are arranged in product word, wherein the first cavity 140 and the second cavity 140 ' It is arranged symmetrically in the two sides of motor 120.Such product word arrangement increases structural strength, optimizes topology layout, avoids space Waste.The line of the axis of the axis and motor 120 of first cavity 140 and the axis of the first cavity 140 and the second cavity 140 Angle between the line of axis is that α can be adjusted as needed, and α is bigger, then the width of liquid feeding double pump is narrower, and height is higher, and α is excellent It is selected in the range of 0-60 °, is in this example 45 °.In other embodiments, when α is chosen as 0 °, the first cavity 140, electricity Machine 120 and the second cavity 140 ' are arranged in a word.

First transmission system 130 and the second transmission system 130 ' can be respectively selectively by the rotations of 120 output shaft of motor Transhipment is dynamic to transmit and is converted to the reciprocal of the first pull rod 141 of the first cavity 140 and the second pull rod 141 ' of the second cavity 140 ' Movement.As described above, the first transmission system 130 includes the first worm gear 131 and first gear 132 of coaxial arrangement, the second transmission System 130 ' includes the second worm gear 131 ' and second gear 132 ', the first worm gear 131 and the second worm gear 131 ' point of coaxial arrangement It is not engaged with the worm screw 160.Fig. 7 shows the cutaway top view of a part of liquid feeding double pump according to this embodiment.Such as Fig. 7 Shown, the first worm gear 131 is coupled with first gear 132 by the first one-way driving mechanism, the second worm gear 131 ' and second gear 132 ' are coupled by the second one-way driving mechanism, so that when worm screw 160 rotates on the first direction of rotation A, the first worm gear 131 First gear 132 is transferred torque to by the first one-way driving mechanism, and the second worm gear 131 ' does not transfer torque to second Gear 132 ', and the (not shown) when worm screw 160 rotates on the second direction of rotation opposite with the first direction of rotation A, the One worm gear 131 does not transfer torque to first gear 132, and the second worm gear 131 ' is passed torque by the second one-way driving mechanism It is delivered to second gear 132 '.

Therefore, when worm screw 160 rotates on the first direction of rotation A, the first pull rod 141 is only driven to move back and forth, Without driving the second pull rod 141 ' to move back and forth.On the contrary, when worm screw 160 is in second rotation opposite with the first direction of rotation A When turning to rotate on direction, the second pull rod 141 ' is only driven to move back and forth, without driving the first pull rod 141 back and forth to be transported It is dynamic.In this way, can choose the driving direction of worm screw 160, i.e. the rotation direction of motor, with selectively make the first cavity 140 or Second cavity 140 ' changes volume, thus suction and output liquid.

Fig. 8 shows the cross-sectional view of the first worm gear 131 and first gear 132 according to the present embodiment, and Fig. 9 a and Fig. 9 b divide The perspective view of the first worm gear 131 according to the present embodiment is not shown, and Figure 10 a and Figure 10 b are respectively illustrated according to the present embodiment First gear 132 perspective view.As shown in Fig. 7-10b, the first one-way driving mechanism includes multiple first ratchets part 1321 With the first detent portions 1311, which can be cantilever structure.First gear 132 includes cylindric First muscle portion 1322, multiple first ratchets part 1321 are distributed in circumferentially-spacedly in the inner peripheral surface of the first muscle portion 1322, the One worm gear 131 includes columned first protrusion 1313, and it is convex that multiple first detent portions 1311 are distributed in first circumferentially-spacedly It rises in 1313 peripheral surface.First muscle portion 1322 surround the first protrusion 1312 periphery, with formed retain such as lubricating oil or First shoe cream room C of the lubricant of cup grease, and in first shoe cream room C, multiple first ratchets part 1321 with it is multiple The first respectively cooperation of detent portions 1311.In addition, in order to be deposited in lubricant in the first shoe cream room C, the first muscle portion 1322 free end has the first concave portion 1323, and the first turbine 131 further includes first boss 1312, from the first turbine 131 An end face it is axially projecting, the first protrusion 1313 is further axially projecting from first boss 1312, first boss 1312 it is outer Circumferential edges receive in the first concave portion 1323.

Similarly, the second one-way driving mechanism is identical as the structure of the first one-way driving mechanism, and including cooperating The second ratchet part and the second detent portions.

First one-way driving mechanism and the second one-way driving mechanism are not limited to above-mentioned setting, can also have other knots Structure.

In order to sense the liquid volume added of liquid feeding double pump, liquid feeding double pump according to the present utility model further includes sensor-based system.Figure 11 Show the top view of the liquid feeding double pump of first embodiment according to the present utility model.Figure 12 a and Figure 12 b are shown according to this reality With the side view of the liquid feeding double pump of novel first embodiment.It is according to the present utility model as shown in Figure 11, Figure 12 a and Figure 12 b The sensor-based system of first embodiment includes the first sensing device and the second sensing device.First sensing device includes being fixed to pump case The sub- sensing element 171 of the first of body 110 and the second sub- sensing element 172 fixed to the first pull rod 141.Second sensing device packet It includes the sub- sensing element 173 of third fixed to pump case 110 and is fixed to the 4th sub- sensing element 174 of the second pull rod 141 '. First sub- sensing element 171 and the sub- sensing element 173 of third can be Hall element, the second sub- sensing element 172 and the 4th son Sensing element 174 can be the magnet steel cooperated with Hall element.

Figure 12 a shows the view that the first pull rod 141 moves to first position, wherein the second sub- sensing element 172 is with One pull rod 141 moves to first position.As figure 12 a shows, at first position, the first pull rod 141 is in maximum compression shape State, at this point, second sub- 172 the first sub- sensing element 171 of distance of sensing element for being fixed to the first pull rod 141 is farthest, the first son The magnetic field that sensing element 171 senses is minimum.Figure 12 b shows the view that the first pull rod 141 moves to the second position, wherein Second sub- sensing element 172 moves to the second position with the first pull rod 141.As shown in Figure 12b, at the second position, first Pull rod 141 is in maximum tension state, at this point, being fixed to 172 distance the first son sensing of the second sensing element of the first pull rod 141 Recently, the magnetic field that the first sub- sensing element 171 senses is maximum for element 171.Therefore, the first sensing device can be sensed accurately The reciprocation period and/or speed of first pull rod 141.Similarly, the second sensing device can accurately sense the second pull rod 141 ' reciprocation period and/or speed.Therefore, the first sensing device of sensor-based system and the second sensing device can be distinguished Relevant information is fed back to control device to the output for controlling motor 120, to accurately control the injected volume of liquid feeding double pump.This Outside, since the second sub- sensing element 172 is set to the first pull rod 141 and the 4th sub- sensing element 174 is set to the second pull rod 141 ', therefore, compared to the drive position being arranged in front of output shaft or power train, sensor-based system can be sensed more accurately The reciprocating motion of first pull rod 141 and the second pull rod 141 ', and then the size of the current liquid volume added of two cavitys is sensed, thus Precisely control the injected volume of liquid feeding double pump.

Preferably, the motor 120 that liquid feeding double pump according to the present utility model uses is direct current generator, accordingly, with respect to same Motor is walked, direct current generator 120 can provide bigger torque and output bigger stream in the case where occupying same volume Amount.Meanwhile transmission system allows to can be realized the output of accurate liquid using the liquid feeding double pump of direct current generator 120.

Figure 13 a and Figure 13 b show the sensor-based system of the liquid feeding double pump of second embodiment according to the present utility model.With Unlike one embodiment, the sensor-based system of liquid feeding double pump according to the second embodiment includes the first sensing element 271 and second Sensing element 272, the second sensing element 272 are arranged on the output shaft of motor 220, and the first sensing element 271 is then arranged Electric machine casing end near two sensing elements 272, is fixed relative to pump case.The sensor-based system can sense motor The revolving speed of 220 output shaft.Since the transmission ratio of the first transmission system and the second transmission system is certain, accordingly it is also possible to Obtain the first cavity 140 and the second cavity 140 ' indirectly using the period and/or speed for the output shaft for sensing motor 220 Reciprocating motion period and/or speed, to control the output of motor 220.In order to more effectively utilize space, the second sensing Element 272 can be set on the side opposite with the output end of motor 220.First sensing element 271 can be Hall element, Second sensing element 272 can be magnet ring, can have the pole N and the pole S.With the rotation of the second sensing element 272 Turn, when its N extremely close to the first sensing element 271 when, high electric signal or low electric signal are generated, when its S is extremely close to the first sensing When part 271, opposite signal is generated.

Sensor-based system is not limited to Hall element and magnet steel, Hall element and magnet ring, can also include for sensing opposite position It sets or the other component of revolving speed, such as dry-reed tube component.

All parts in liquid feeding double pump according to the present utility model can have a variety of different arrangements.It is described below and adds Other arrangements of liquid double pump, but the utility model is without being limited thereto, can be installed according to customer demand and liquid feeding double pump To the demand of electrical equipment etc. the arrangement of all parts in liquid feeding double pump is adjusted.

Figure 14 shows the top view of the liquid feeding double pump of 3rd embodiment according to the present utility model.As shown in figure 14, with Unlike first embodiment, in liquid feeding double pump according to the third embodiment, the axis of the first cavity 340 and the second cavity 340 ' Line is parallel to each other, and the axis of the two is each perpendicular to the axis of motor 320.

Figure 15 shows the top view of the liquid feeding double pump of fourth embodiment according to the present utility model.As shown in figure 15, with Unlike first embodiment, in the liquid feeding double pump according to fourth embodiment, motor 420, the first cavity 440 and the second cavity 440 ' axis is parallel to each other, and the end face opposite with output end of motor 420 is far from the first cavity 440 and the second cavity 440 ' The end face arrangement opposite with its pull rod.

In addition, the first cavity 140,340,440 and the first transmission system 130 and the second cavity 140 ', 340 ', 440 ' with And second transmission system 130 ' be not limited to be arranged symmetrically relative to motor 120,220,320,420.

Above-mentioned liquid feeding double pump can be used in the household electrical appliance such as washing machine or dish-washing machine.E.g., including in washing machine Liquid feeding double pump can be used for launching liquid detergent automatically into washing machine.In another example the liquid feeding double pump being included in dish-washing machine can be used for Launch cleaning solution automatically into dish-washing machine.

The scope of the utility model is not limited by above described embodiment, but by appended claims And its equivalent limits.

Claims (11)

1. a kind of liquid feeding double pump characterized by comprising

Pump case (110)；

First cavity (140,340,440) and the second cavity (140 ', 340 ', 440 ')；

Motor (120,220,320,420)；

First transmission system (130), be connected in motor (120,220,320,420) and the first cavity (140,340,440) it Between, change for the rotational motion of motor (120,220,320,420) to be converted to the first cavity (140,340,440) volume Become；And

Second transmission system (130 '), be connected in motor (120,220,320,420) and the second cavity (140 ', 340 ', 440 ') between, for the rotational motion of motor (120,220,320,420) to be converted to the second cavity (140 ', 340 ', 440 ') The change of volume, wherein

The axis of motor (120,220,320,420), the axis of the first cavity (140,340,440) and the second cavity (140 ', 340 ', 440 ') axis is at least parallel two-by-two and two-by-two in the same plane, the axis of the motor (120,220,320,420) Line passes through its output shaft, the axis and second cavity (140 ', 340 ', 440 ') of first cavity (140,340,440) Axis to reciprocally move direction respectively parallel.

2. liquid feeding double pump according to claim 1, which is characterized in that the liquid feeding double pump further includes

Worm screw (160) receives the rotational motion of motor (120,220,320,420)；

First transmission system (130) is connected between the worm screw (160) and the first cavity (140,340,440),

Second transmission system (130 ') is connected between the worm screw (160) and the second cavity (140 ', 340 ', 440 ').

3. liquid feeding double pump according to claim 2, which is characterized in that

First transmission system (130) includes the first worm gear (131) and first gear (132),

Second transmission system (130 ') includes the second worm gear (131 ') and second gear (132 '),

First worm gear (131) is engaged with the worm screw (160), and via first gear (132) be connected to the first cavity (140, 340,440),

Second worm gear (131 ') is engaged with the worm screw (160), and is connected to the second cavity via second gear (132 ') (140 ', 340 ', 440 '),

First worm gear (131) and first gear (132) and the second worm gear (131 ') and second gear (132 ') are respectively by the One one-way driving mechanism and the connection of the second one-way driving mechanism, so that when worm screw (160) rotates in the first rotational direction, the One worm gear (131) is transferred torque to first gear (132) by the first one-way driving mechanism, and the second worm gear (131 ') will not Torque is transmitted to second gear (132 '), and when worm screw (160) are on second direction of rotation opposite with the first direction of rotation When rotation, the first worm gear (131) is not transferred torque to first gear (132), and the second worm gear (131 ') is unidirectional by second Transmission mechanism transfers torque to second gear (132 ').

4. liquid feeding double pump according to claim 2, which is characterized in that

First cavity (140,340,440), motor (120,220,320,420) and the second cavity (140 ', 340 ', 440 ') are hanging down It directly sees in the plane of the axis of motor (120,220,320,420) and is arranged in product word, wherein motor is located at the first cavity and the Between two cavitys.

5. liquid feeding double pump according to claim 2, which is characterized in that

First cavity (140,340,440), motor (120,220,320,420) and the second cavity (140 ', 340 ', 440 ') are hanging down It is directly arranged in the plane of the axis of motor (120,220,320,420) in linear type, wherein motor is located at the first cavity and the Between two cavitys.

6. liquid feeding double pump according to claim 4 or 5, which is characterized in that

First cavity (140,340,440) and the second cavity (140 ', 340 ', 440 '), the first transmission system (130) and second pass Dynamic system (130 ') are respectively relative to the axisymmetrical arrangement of motor (120,220,320,420).

7. liquid feeding double pump according to claim 6, which is characterized in that

First cavity (140,340,440), the first transmission system (130), motor (120,220,320,420), the second power train It unites (130 ') and the second cavity (140 ', 340 ', 440 ') sequentially W-shaped arrangement.

8. liquid feeding double pump according to claim 1, which is characterized in that

The liquid feeding double pump further includes sensor-based system, is used to sense the first cavity (140,340,440) and the second cavity The change of the volume of (140 ', 340 ', 440 '), the motor (120,220,320,420) are direct current generator.

9. a kind of liquid jettison system characterized by comprising

Liquid feeding double pump according to claim 1 to 8.

10. a kind of washing machine characterized by comprising

Liquid jettison system according to claim 9.

11. a kind of dish-washing machine characterized by comprising

Liquid jettison system according to claim 10.