CN100413448C - Mechanism for switching flow path of wash water in dishwasher - Google Patents
Mechanism for switching flow path of wash water in dishwasher Download PDFInfo
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- CN100413448C CN100413448C CNB031444652A CN03144465A CN100413448C CN 100413448 C CN100413448 C CN 100413448C CN B031444652 A CNB031444652 A CN B031444652A CN 03144465 A CN03144465 A CN 03144465A CN 100413448 C CN100413448 C CN 100413448C
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- washings
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Abstract
The present invention discloses a mechanism for switching flow paths of wash water in dishwashers, which comprises a water tank, an upper nozzle, a lower nozzle, a wash pump assembly, a switching valve and a driving device, wherein the water tank is arranged on the bottom of a wash tank; the upper nozzle and the lower nozzle are respectively arranged on the upper part and the lower part in the wash tank, and are respectively communicated with the water tank through an upper flow path and a lower flow path; the wash pump assembly is arranged on one side of the water tank and supplies wash water to the upper flow path and the lower flow path; the switching valve is rotatablely arranged in the boundary part of the upper flow path and the lower flow path and selectively blocks the upper flow path and/or the lower flow path; consequently, the wash water can be selectively supplied to a place for blocking the upper flow path and/or the lower flow path; the driving device is connected with the switching valve and is used for controlling the working state of the switching valve. The mechanism with simple structure has the advantages for reducing the number of formation components, reducing production cost, preventing malfunction and enhancing product reliability.
Description
Technical field
The present invention relates to dish-washing machine, particularly a kind of washings passage opening/closing mechanism of dish-washing machine.
Background technology
Fig. 1 is the sectional structure schematic diagram of existing dish-washing machine; Fig. 2 is the sectional structure schematic diagram of the washings passage opening/closing mechanism of existing dish-washing machine.
As shown in Figure 1, existing dish-washing machine comprises: body 2, sink 4, gate 6, top shelf 8, lower shelf 9, upper nozzle 12, lower nozzle 14, tank 16, washing water pump assembly 20 and heater assembly (not shown); The sink 4 of described cube shaped is arranged on the inside of the body 2 of front openings; Described gate 6 is arranged on the front openings place of body 2 with can opening/close; Described top shelf 8 and lower shelf 9 are separately positioned on the upper and lower in the sink 4; Described upper nozzle 12 and lower nozzle 14 can be rotatably set in respectively top shelf 8 and lower shelf 9 the bottom, and washings are ejected by spray-hole h; Described tank 16 is arranged on the bottom of sink 4, and there are washings in portion within it; Described washing water pump assembly 20 is arranged on the side in the tank 16, comprises washing water pump 24 and is attached thereto the pump body 22 that connects, and washing water pump assembly 20 can be fed to washings upper nozzle 12 and lower nozzle 14; Described heater assembly (not shown) is arranged on the inside of tank 16, and can the washings in the tank 16 be heated.
In addition, a side of described tank 16 also is provided with: to tank 16 supply with the water-supply valve assembly (not shown), feed pipe (not shown) of washings, to draining pump component (not shown), the drainpipe (not shown) of the washings of outside discharge water groove 16 inside be used for filtration washing groove 4 and flow to the filter 18 of the foreign matter in the washings of tank 16.
As depicted in figs. 1 and 2, described upper nozzle 12 is connected with bottom stream 28 by pump body 22 and the top stream 26 that is arranged on tank 16 1 sides respectively with lower nozzle 14; When washing water pump 24 work, flow through respectively top stream 26 and bottom stream 28 of the washings of tank 16 inside is fed to upper nozzle 12 and lower nozzle 14, while upper nozzle 12 and lower nozzle 14 rotate washings sprayed to the inner space of sink 4 equably.
The position that described top stream 26 and bottom stream 28 are connected with pump body 22 is provided with and is used for the valving 30 that top stream 26 and bottom stream 28 selectively open/close, and described valving 30 selectively flows into washings to top stream 26 and bottom stream 28.As shown in Figure 2, described valving 30 comprises: retaining platform 32a, retaining platform 32b, check valve 34a, check valve 34b, magnetic valve 36a and magnetic valve 36b; Described retaining platform 32a and retaining platform 32b protrude respectively on the front inner wall that is formed on top stream 26 and bottom stream 28; Described check valve 34a and check valve 34b are arranged on the front end of top stream 26 and bottom stream 28 respectively movably, and open/close portion's stream 26 and bottom stream 28 by the mode of opening/blocking platform 32a and retaining platform 32b respectively; Described magnetic valve 36a and magnetic valve 36b are separately positioned under check valve 34a and the check valve 34b, respectively the duty of check valve 34a and check valve 34b are controlled.
Described check valve 34a and check valve 34b are respectively by the magneticaction of magnetic valve 36a and magnetic valve 36b and carry out out/magnetic of closed operation.
Washings passage opening/closing working process of mechanism to existing dish-washing machine is illustrated below: when washing water pump 24 work, check valve 34a and check valve 34b move up, retaining platform 32a in being set at top stream 26 and bottom stream 28 respectively and retaining platform 32b block, at this moment check valve 34a and check valve 34b are in closed condition, stop washings to flow into top stream 26 and bottom stream 28 respectively.When magnetic valve 36a and magnetic valve 36b work, the magnetic force of Chan Shenging applies downward attraction to check valve 34a and check valve 34b respectively separately, check valve 34a and check valve 34b break away from retaining platform 32a respectively and retaining platform 32b moves down, top stream 26 and bottom stream 28 are opened, and washings flow into top stream 26 and bottom stream 28.
But, after washing water pump 24 is started working, if washings are supplied with top stream 26 and bottom stream 28 simultaneously, then flow through top stream 26 and bottom stream 28 of washings supplied with upper nozzle 12 and lower nozzle 14 simultaneously, can cause hydraulic pressure to reduce like this, the jet power of nozzle reduces, and causes clean result to reduce.So, in order to guarantee that upper nozzle 12 and lower nozzle 14 have enough jet powers, make magnetic valve 36a and magnetic valve 36b alternation, thereby make washings alternately the top stream 26 and the bottom stream 28 of feeding opening, and alternately washings are ejected into the inner space of sink 4 by upper nozzle 12 and lower nozzle 14.
The shortcoming of the washings passage opening/closing mechanism of above-mentioned existing dish-washing machine is: be respectively arranged with check valve 34a and check valve 34b in top stream 26 and the bottom stream 28, and check valve 34a and check valve 34b also dispose high magnetic valve 36a of price and magnetic valve 36b work respectively, strengthened the production cost of dish-washing machine.In addition, magnetic valve 36a and magnetic valve 36b all need electricity to control, and there is the hidden danger of electrical connection fault aspect again in both consumed powers.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of the washings passage opening/closing mechanism of above-mentioned existing dish-washing machine, thereby a kind of washings passage opening/closing mechanism that the dish-washing machine of portion's stream and bottom stream was selectively driven/closed to open and close valve that rotatably is provided with on the boundary position of the top of washings stream and bottom stream is provided.
In order to solve described technical problem, the technical solution used in the present invention is: the present invention
The washings passage opening/closing mechanism of dish-washing machine comprises: tank, upper nozzle, lower nozzle, washing pump assembly, open and close valve and drive unit; Described tank is arranged on the bottom of sink, and there are washings its inside; Described upper nozzle and lower nozzle are separately positioned on the upper and lower in the sink, and are connected with tank by top stream and bottom stream respectively; Described washing pump assembly is arranged on a side of tank, washings can be fed on top stream and the bottom stream; Described open and close valve can be rotatably set in the boundary position of top stream and bottom stream, and selectively blocks top stream and/or bottom stream, thereby washings selectively can be fed on top stream and/or the bottom stream; Described drive unit is connected with open and close valve, is used for controlling the duty of open and close valve; Described drive unit comprises: motor, cam and awareness tool; Described motor is connected with the lower end of open and close valve by rotating shaft; Described cam is arranged on the rotating shaft, has the different interval of several radiuss of turn on the outer peripheral face of cam; The outside of described awareness tool and cam is provided with in contact, and adjusts the duty of motor according to the position of the different interval corresponding open and close valve on the cam outer peripheral face.
Described motor is the stepper motor that can regulate its anglec of rotation.
Described awareness tool comprises: microswitch and switch contact; Described microswitch is according to the different interval power supply at certain hour section internal cutting off/connection motor on the cam outer peripheral face; The duty of described switch contact is controlled by the different interval present position on the outer peripheral face of cam, and along with the rotation of cam is closed/opens, thereby can regulate the duty of microswitch.
Be provided with working lever between the outer peripheral face of described cam and the switch contact, thereby action of cam power is delivered on the switch contact.
Described microswitch is switched on/disconnects according to the different interval positions on the cam outer peripheral face, and cuts off the power supply to the motor power supply within the certain hour section that the on/off state is changed mutually.
The invention has the beneficial effects as follows: simple in structure, reduced the number of building block, reduce production cost, and can prevent misoperation, improved reliability of products.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of existing dish-washing machine;
Fig. 2 is the sectional structure schematic diagram of the washings passage opening/closing mechanism of existing dish-washing machine;
Fig. 3 is the sectional structure schematic diagram of the washings passage opening/closing mechanism of dish-washing machine of the present invention;
Fig. 4 is the washings passage opening/closing mechanism broken section structural representation of dish-washing machine of the present invention;
Fig. 5 a to Fig. 5 d is respectively the washings passage opening/closing mechanism working state figure of dish-washing machine of the present invention.
Among the figure:
8: top shelf 9: lower shelf
12: upper nozzle 14: lower nozzle
26: top stream 27: the branch of top stream and bottom stream
The position, boundary
27a: inflow entrance 27b: top flow export
27c: bottom flow export 28: bottom stream
50: open and close valve 60: drive unit
62: motor 64: cam
66: awareness tool 66a: microswitch
66b: switch contact 66c: working lever
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Fig. 3 is the sectional structure schematic diagram of the washings passage opening/closing mechanism of dish-washing machine of the present invention; Fig. 4 is the washings passage opening/closing mechanism broken section structural representation of dish-washing machine of the present invention; Fig. 5 a to Fig. 5 d is respectively the washings passage opening/closing mechanism working state figure of dish-washing machine of the present invention.
As shown in figures 1 and 3, the washings passage opening/closing mechanism of present embodiment dish-washing machine comprises: tank 16, upper nozzle 12, lower nozzle 14, washing pump assembly 20, open and close valve 50 and drive unit 60; Described tank 16 is arranged on the bottom of the rectangle sink 4 that is used for washing bowl dish, and there are washings its inside; Described upper nozzle 12 and lower nozzle 14 are connected with tank 16 by top stream 26 and bottom stream 28 respectively, washings can be ejected into sink 4 inside and be used for placing on the top shelf 8 and lower shelf 9 of bowl dish; Described washing pump assembly 20 is arranged on a side of tank 16, washings can be fed on top stream 26 and the bottom stream 28; Described open and close valve 50 can be rotatably set in the boundary position 27 of top stream and bottom stream, and selectively blocks top stream 26 and/or bottom stream 28, thereby washings selectively can be fed on top stream 26 and the bottom stream 28; Described drive unit 60 is connected with open and close valve 50, is used for controlling the duty of open and close valve 50.
Be formed with ostium 27a, top flow export 27b and bottom flow export 27c in the boundary position 27 of described top stream and bottom stream; Washings flow into from tank 16 by described ostium 27a, flow to top stream 26 and bottom stream 28 respectively by described top flow export 27b and bottom flow export 27c again.
The cylindrical shape of the part of described open and close valve 50, in order selectively to block ostium 27a, top flow export 27b or bottom flow export 27c, its upper and lower end forms hinge with the boundary position 27 of top stream and bottom stream respectively and is connected.
Described drive unit 60 comprises: motor 62, cam 64 and awareness tool 66; Described motor 62 is connected with the lower end of open and close valve 50 by rotating shaft 62a, for open and close valve 50 provides revolving force; Described cam 64 is arranged on the rotating shaft 62a, has the different interval of several radiuss of turn on the outer peripheral face of cam 64; Described awareness tool 66 is provided with in contact with the outside of cam 64, and adjusts the duty of motor 62 according to the position of the different interval corresponding open and close valve 50 on cam 64 outer peripheral faces.
Described motor 62 is the stepper motor that can regulate its anglec of rotation.
Specifically, described awareness tool 66 comprises: microswitch 66a and switch contact 66b; Described microswitch 66a is according to the different interval power supply at certain hour section internal cutting off/connection motor 62 on cam 64 outer peripheral faces; The duty of described switch contact 66b is controlled by the different interval present position on the outer peripheral face of cam 64, and along with the rotation of cam 64 is closed/opens, thereby can regulate the duty of microswitch 66a.
Be provided with working lever 66c between the outer peripheral face of described cam 64 and the switch contact 66b, thus with the force transmission of cam 64 to switch contact 66b.
Described cam 64 comprises: the 1st cam part 64a and the 2nd cam part 64b; The radius of described the 1st cam part 64a is greater than the radius of the 2nd cam part 64b, and during its outer peripheral face and working lever 66c terminal tangent, microswitch 66a is in on-state; The radius of described the 2nd cam part 64b is less than the radius of the 1st cam part 64a, and during its outer peripheral face and working lever 66c terminal tangent, microswitch 66a is in off-state; Described the 1st cam part 64a and the 2nd cam part 64b come closure/unlatching of gauge tap contact 66b respectively by working lever 66c.
Described microswitch 66a promptly is switched on/disconnects according to the different interval positions on cam 64 outer peripheral faces according to the position of open and close valve 50, and cuts off the power supply to motor 62 power supplies within the certain hour section that the on/off state is changed mutually.
The anglec of rotation θ of described motor 62 has determined the duty of open and close valve 50, and the duty of open and close valve 50 has determined to supply with to upper nozzle 12 and lower nozzle 14 the opening/close of stream of washings, has promptly determined which nozzle ejection washings.Corresponding to the different anglec of rotation θ of motor 62, the duty of each nozzle is as shown in table 1.
Table 1
| The anglec of rotation of motor | 0° | 90°～180° | 270° | 315° |
| Microswitch | Connect | Connect | Disconnect | Disconnect |
| The nozzle of water spray | Upper nozzle | -- | Lower nozzle | Upper nozzle and lower nozzle |
As can be seen from Table 1, when the anglec of rotation θ of motor 62 was 0 °, open and close valve 50 was blocked bottom flow export 27c, so supply with to upper nozzle 12 by the washings of ostium 27a inflow, made upper nozzle 12 water sprays; When the anglec of rotation θ of motor 62 was 270 °, open and close valve 50 was blocked top flow export 27b, so supply with to lower nozzle 14 by the washings of ostium 27a inflow, made lower nozzle 14 water sprays.
When the anglec of rotation θ of motor 62 was 90 °～180 °, open and close valve 50 was blocked ostium 27a, so washings are supplied with less than on upper nozzle 12 and the lower nozzle 14; When the anglec of rotation θ of motor 62 is 315 °, open and close valve 50 is neither blocked ostium 27a and is not also blocked top flow export 27b and bottom flow export 27c, so supply with to upper nozzle 12 and lower nozzle 14 simultaneously from the washings that ostium 27a flows into, spray water simultaneously to upper nozzle 12 and lower nozzle 14.
When motor 62 was started working, the cam 64 that is arranged on the rotating shaft 62a of motor 62 also began rotation thereupon, and when the anglec of rotation θ of motor was 0 °～315 °, the outer peripheral face of its 1st cam part 64a and working lever 66c's was terminal tangent; When the anglec of rotation θ of motor was 315 °～0 °, the outer peripheral face of its 2nd cam part 64b and working lever 66c's was terminal tangent.
When described microswitch 66a is in the transition status of on/off, will cut off within a certain period of time to the power supply of motor 62 power supplies, so the basis duty of open and close valve 50 at that time selectively is supplied to upper nozzle 12 or lower nozzle 14 with washings.
It is different to the time of the power supply of motor 62 power supplies that described microswitch 66a goes up the anglec of rotation θ cut-out of setting according to motor.
Washings passage opening/closing working process of mechanism to the present embodiment dish-washing machine is illustrated below:
Shown in Fig. 5 a, at first, after motor 62 energisings started, when its anglec of rotation θ was 90 °～180 °, the outer peripheral face of the 1st cam part 64a contacted with the end of working lever 66c, switch contact 66b is closed, thereby make microswitch 66a be in on-state, at this moment, open and close valve 50 is blocked ostium 27a, washings are supplied with less than on top stream 26 and the bottom stream 28, thereby also can be by upper nozzle 12 and lower nozzle 14 water sprays.
Shown in Fig. 5 b, when the anglec of rotation θ of motor 62 is 270 °, the outer peripheral face of the 2nd cam part 64b contacts with the end of working lever 66c, switch contact 66b is unlocked, thereby make microswitch 66a be in off-state, at this moment, open and close valve 50 is blocked top flow export 27b, so the washings that flow into from ostium 27a are supplied on the bottom stream 28.Meanwhile, because microswitch 66a is transformed into off-state from on-state, thus in predefined certain hour section, will cut off power supply to motor 62 power supplies, thus the section washed water ejects by lower nozzle 14 at this moment.
Shown in Fig. 5 c, when the anglec of rotation θ of motor 62 is 0 °, the outer peripheral face of the 1st cam part 64a contacts with the end of working lever 66c, switch contact 66b is closed, thereby make microswitch 66a be in on-state, at this moment, open and close valve 50 is blocked bottom flow export 27c, so the washings that flow into from ostium 27a are supplied on the top stream 26; Meanwhile,, microswitch 66a is transformed into on-state owing to being in from off-state, so at the power supply of predefined certain hour section internal cutting off to motor 62 power supplies, thereby a section washed water ejects by lower nozzle 14 at this moment.
Shown in Fig. 5 d, when the anglec of rotation θ of motor 62 is 315 °, the outer peripheral face of the 2nd cam part 64b contacts with the end of working lever 66c, switch contact 66b is unlocked, thereby make microswitch 66a be in off-state, at this moment, open and close valve 50 is in neither blocks the position that ostium 27a does not block top flow export 27b and bottom flow export 27c yet, so the washings that flow into from ostium 27a are supplied on top stream 26 and the bottom stream 28; Meanwhile, because microswitch 66a is in from on-state and is transformed into off-state, so at the power supply of predefined time period internal cutting off to motor 62 power supplies, thereby the section washed water ejects by upper nozzle 12 and lower nozzle 14 simultaneously between making at this moment.
Claims (5)
1. the washings passage opening/closing mechanism of a dish-washing machine comprises: tank, upper nozzle, lower nozzle, washing pump assembly, open and close valve (50) and drive unit (60); Described tank is arranged on the bottom of sink, and there are washings its inside; Described upper nozzle and lower nozzle are separately positioned on the upper and lower in the sink, and are connected with tank by top stream and bottom stream respectively; Described washing pump assembly is arranged on a side of tank, washings can be fed on top stream and the bottom stream; Described open and close valve (50) can be rotatably set in the boundary position (27) of top stream and bottom stream, and selectively block top stream (26) and/or bottom stream (28), thereby washings selectively can be fed on top stream (26) and/or the bottom stream (28); Described drive unit (60) is connected with open and close valve (50), is used for controlling the duty of open and close valve (50); It is characterized in that: described drive unit (60) comprising: motor (62), cam (64) and awareness tool (66); Described motor (62) is connected by the lower end of rotating shaft (62a) with open and close valve (50); Described cam (64) is arranged on the rotating shaft (62a), has the different interval of several radiuss of turn on the outer peripheral face of cam (64); Described awareness tool (66) is provided with in contact with the outside of cam (64), and adjusts the duty of motor (62) according to the position of the different interval corresponding open and close valve (50) on cam (64) outer peripheral face.
2. the washings passage opening/closing mechanism of dish-washing machine according to claim 1, it is characterized in that: described motor (62) is the stepper motor that can regulate its anglec of rotation.
3. the washings passage opening/closing mechanism of dish-washing machine according to claim 1, it is characterized in that: described awareness tool (66) comprising: microswitch (66a) and switch contact (66b); Described microswitch (66a) is according to the different interval power supply at certain hour section internal cutting off/connection motor (62) on cam (64) outer peripheral face; The duty of described switch contact (66b) is controlled by the different interval present position on the outer peripheral face of cam (64), and along with the rotation of cam (64) is closed/opens, thereby the duty that can regulate microswitch (66a).
4. the washings passage opening/closing mechanism of dish-washing machine according to claim 3, it is characterized in that: be provided with working lever (66c) between the outer peripheral face of described cam (64) and the switch contact (66b), thereby the force transmission of cam (64) is arrived on the switch contact (66b).
5. the washings passage opening/closing mechanism of dish-washing machine according to claim 3, it is characterized in that: described microswitch (66a) is switched on/disconnects according to the different interval positions on cam (64) outer peripheral face, and cuts off the power supply to motor (62) power supply within the certain hour section that the on/off state is changed mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031444652A CN100413448C (en) | 2003-09-28 | 2003-09-28 | Mechanism for switching flow path of wash water in dishwasher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031444652A CN100413448C (en) | 2003-09-28 | 2003-09-28 | Mechanism for switching flow path of wash water in dishwasher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1600254A CN1600254A (en) | 2005-03-30 |
| CN100413448C true CN100413448C (en) | 2008-08-27 |
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ID=34659621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031444652A Expired - Fee Related CN100413448C (en) | 2003-09-28 | 2003-09-28 | Mechanism for switching flow path of wash water in dishwasher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100413448C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108685543A (en) * | 2018-03-28 | 2018-10-23 | 浙江欧琳生活健康科技有限公司 | A kind of pulsed cleaning equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54123265A (en) * | 1978-03-17 | 1979-09-25 | Hitachi Ltd | Tableware washing machine |
| DE3816408A1 (en) * | 1988-05-13 | 1989-11-16 | Licentia Gmbh | Dishwashing machine with a changeover device |
| EP0795292A2 (en) * | 1996-02-09 | 1997-09-17 | CANDY S.p.A. | Dishwasher with rotating sprayer with selectively fed spraying nozzles and associated washing method |
| JPH1043121A (en) * | 1996-08-01 | 1998-02-17 | Zojirushi Corp | Pump for dishwasher |
| CN2471978Y (en) * | 2001-04-03 | 2002-01-16 | 广东美的集团股份有限公司 | Water supplying pump for dish washing machine |
-
2003
- 2003-09-28 CN CNB031444652A patent/CN100413448C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54123265A (en) * | 1978-03-17 | 1979-09-25 | Hitachi Ltd | Tableware washing machine |
| DE3816408A1 (en) * | 1988-05-13 | 1989-11-16 | Licentia Gmbh | Dishwashing machine with a changeover device |
| EP0795292A2 (en) * | 1996-02-09 | 1997-09-17 | CANDY S.p.A. | Dishwasher with rotating sprayer with selectively fed spraying nozzles and associated washing method |
| JPH1043121A (en) * | 1996-08-01 | 1998-02-17 | Zojirushi Corp | Pump for dishwasher |
| CN2471978Y (en) * | 2001-04-03 | 2002-01-16 | 广东美的集团股份有限公司 | Water supplying pump for dish washing machine |
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| Publication number | Publication date |
|---|---|
| CN1600254A (en) | 2005-03-30 |
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Granted publication date: 20080827 Termination date: 20100928 |