CN103742384A - Micro-pulse type liquid pump - Google Patents
Micro-pulse type liquid pump Download PDFInfo
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- CN103742384A CN103742384A CN201410022557.5A CN201410022557A CN103742384A CN 103742384 A CN103742384 A CN 103742384A CN 201410022557 A CN201410022557 A CN 201410022557A CN 103742384 A CN103742384 A CN 103742384A
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- liquid
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- heating
- way valve
- pressurized liquid
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Abstract
The invention relates to a micro-pulse type liquid pump which comprises a pump core, an inlet check valve, an outlet check valve and heating units. The pump core is provided with a liquid channel; the inlet check valve and the outlet check valve are respectively arranged at positions of a liquid inlet and a liquid outlet and used for enabling liquid to be pressurized to flow only on the flowing direction of the liquid to be pressurized, and the threshold value of the outlet check valve is larger than that of the inlet check valve; the heating units are located between the liquid inlet and the liquid outlet and used for heating the liquid to be pressurized in a pulse mode, so that part of the liquid to be pressurized nearby the heating units can be vaporized to form steam bubbles, and the liquid to be pressurized is built up on pressure due to evaporation volume expansion of part of the liquid; when the pressure of the liquid to be pressurized is increased to higher than the threshold value of the outlet check valve, the outlet check valve is opened to sent the liquid pump out of the liquid outlet, and the amount of the liquid pumped can be changed according to changes in position of the heating units.
Description
Technical field
The present invention relates to a kind of liquor pump, and relate to especially a kind of miniature pulse type liquid pump.
Background technique
At present, in prior art for the centrifugal pump of pumping liquid, vane pump, piezoelectricity chip pump more complicated structurally, and due to electric component and moving element cause the volume that causes large, start output slow, stop the technological deficiencies such as slow.
Compare with above-mentioned other pumps, oscillatory type pump volume is little, belongs to small-sized or Miniature liquid pump, wherein utilizes diaphragm to vibrate to cause that the pressure of cavity changes, and limited but the pressure that it can provide increases, the pressure of output is not high.
To sum up, current miniature hydraulic pump does not all have effectively to solve the technical problem of the adverse effect that temperature that pumping low consumption of the liquid, high pressure, the high and low power consumption of reliability, ultra-low temperature surroundings (such as subzero more than 100 degrees Celsius), moving element heat few, that will avoid problem that the contraction of parts under ultra-low temperature surroundings bring and/or moving element to produce at work brings for the super-low liquid that may carry raises etc., and the pump comprising by moving element is not suitable for carrying super-low liquid especially.
Summary of the invention
The invention is intended to improve the above-mentioned technological deficiency of prior art.
One object of the present invention is to provide a kind of miniature pulse type liquid pump, and it can provide large pressure reduction, volume is little and low power consuming.
Another object of the present invention is to provide a kind of miniature pulse type liquid pump, and its wearing and tearing less and the life-span is long, movement-less part.
Another object of the present invention is to provide a kind of miniature pulse type liquid pump, and simple in structure and easily maintenance, and can be used in ultra-low temperature surroundings.
A further object of the present invention is to provide a kind of miniature pulse type liquid pump, can be high from supercharging application, frequency response for delivery of process, can be designed as quantitative pulse and/or start output fast.
For this reason, the invention provides following technological scheme:
A miniature pulse type liquid pump, comprises the pump core with fluid passage, and described fluid passage has liquid inlet and outlet, for treating that pressurized liquid passes through described fluid passage;
It is characterized in that, inlet one-way valve and outlet one-way valve arrange respectively described liquid inlet and outlet port, for treating that pressurized liquid only flows on the described flow direction for the treatment of pressurized liquid described in making, the threshold value of wherein said outlet one-way valve is greater than the threshold value of described inlet one-way valve;
Heating equipment, it is between described liquid inlet and outlet, for treat pressurized liquid described in pulse mode heating, make near the part described heating equipment treat that pressurized liquid is vaporized and forms steam bubble, described in making thus, treat that pressurized liquid is because of its pressure increase of partially liq vaporization volumetric expansion;
Wherein when the described pressure until pressurized liquid increases to the threshold value higher than described outlet one-way valve, described outlet one-way valve is opened liquor pump is sent to described liquid outlet, and the amount of the liquid of institute's pumping can change according to the heating location of described heating equipment is different.
Preferably, described pressurization device is Electric heating appliance.
Preferably, described heating equipment arrange in described fluid passage with described in treat that pressurized liquid directly contacts.
Preferably, described heating equipment arranges on the periphery wall of described fluid passage.
Preferably, described fluid passage treats that the metallic material of pressurized liquid forms described in tolerance in chemical property, positive and negative electrode is connected respectively to the two ends of described fluid passage, electrode can be powered with pulse mode, described in can heating when the energising as the described fluid passage of described heating equipment, treat pressurized liquid, make the part adjoining with described fluid passage treat pressurized liquid vaporization and form steam bubble, described in making thus, treat that pressurized liquid is because of its pressure increase of partially liq vaporization volumetric expansion.
Preferably, described Electric heating appliance is resistance wire.
The present invention is also provided for the operating method of above-mentioned miniature pulse type liquid pump, it is characterized in that, described heating equipment is treated pressurized liquid described in pulse mode heating,, in the heating time at a plurality of intervals section, described in heating, treat pressurized liquid, one period of non-heating period of interval between two adjacent heating time sections; This operating method comprises a plurality of cyclings, and each cycling includes following steps:
When until pressurized liquid, by described inlet one-way valve, enter described pump core and be substantially full of described liquid inlet and outlet between described fluid passage time, start the heating of described heating equipment in the first heating period, make the vaporizing liquid to be heated of part and volumetric expansion causes pressure to increase, when described pressure increases to the threshold value that is greater than described outlet one-way valve, described outlet one-way valve is opened, and the liquid that pressure increases is pumped out;
Because the amount for the treatment of pressurized liquid along with discharging increases and the decline gas that causes of temperature during described one period of non-heating period is condensed into liquid volume and expands and reduce, fluid pressure between described liquid inlet and outlet can be decreased to the threshold value that is less than described outlet one-way valve, described outlet closed check valve, the new pressurized liquid for the treatment of enters described fluid passage by described inlet one-way valve subsequently.
Accompanying drawing explanation
Below with reference to schematic figures, the present invention is described, for illustrated object accompanying drawing shows indefiniteness embodiment and wherein:
Fig. 1 shows according to the miniature pulse type liquid pump of first embodiment of the invention, comprises the heating equipment that is positioned at fluid pipeline;
Fig. 2 is schematically illustrated according to the supercharging working principle in miniature pulse type liquid pump of the present invention
Fig. 3 shows according to the miniature pulse type liquid pump of second embodiment of the invention, comprises the heating equipment on the periphery wall that is positioned at fluid pipeline;
Fig. 4 demonstration is according to the miniature pulse type liquid pump of third embodiment of the invention, and wherein said fluid pipeline itself is as heating equipment.
This figure not drawn on scale, and only show one embodiment of the present of invention to explain the present invention, some parts is omitted and other is only prompted.
Embodiment
In Fig. 1, demonstration is according to the miniature pulse type liquid pump of first embodiment of the invention, comprise: the pump core 18 with fluid passage, fluid passage has liquid inlet 1 and outlet 8, be used for treating that pressurized liquid passes through fluid passage, wherein the diameter of fluid passage makes it possible to liquid in it and can at end face, form concave surface due to capillarity compared with little, and for example diameter can be between 0.1-10mm, and preferably 3 or 5mm; Inlet one-way valve 2 and outlet one-way valve 6, liquid inlet 1 and liquid outlet 8 places and equidirectional layout are set respectively, for making to treat pressurized liquid, only treating that the flow direction of pressurized liquid (as described in arrow) is upper mobile, to avoid liquid backflow, the threshold value of its middle outlet one-way valve 6 is greater than the threshold value of described inlet one-way valve 2; Heating equipment 4, it is between described liquid inlet and outlet, for treat pressurized liquid described in pulse mode heating, make near the part described heating equipment treat that pressurized liquid is vaporized rapidly and forms steam bubble, with respect to part, treat the volume of pressurized liquid, conventionally the volume of steam bubble can expand thousands of times, treats pressurized liquid volumetric expansion and its pressure increase described in making.The heating of the pulse mode here refers in the heating time at a plurality of intervals section treats pressurized liquid described in heating, and between two adjacent heating time sections one period of non-heating period of interval.
When work, treat that pressurized liquid pushes the fluid passage that inlet one-way valve 2 enters pump core 18 open, along with heating equipment 4, in the first heating time, section heating enters the liquid in fluid passage, partially liq is vaporized rapidly and cause internal pressure to increase, when being greater than inlet one-way valve 2, inlet one-way valve 2 is closed, while being greater than subsequently the threshold value that exports one-way valve 6, export one-way valve 6 and open, thereby pump out liquid, the amount of liquid pumping out can be controlled according to the position of heating unit.Along with the steam bubble causing that declines of the fluid temperature during the pumping of liquid and the first non-heating time section after the first heating time section is re-condensed into liquid, expansion diminishes or disappears, pressure in fluid passage is less than the pressure of the liquid to be heated of outlet one-way valve 6 and outside, can restart second work cycle, identical with above-mentioned workflow.
Preferably, heating equipment 4 is Electric heating appliance, such as resistance wire etc., for heating, treats that pressurized liquid, the two ends of resistance wire are connected to respectively positive and negative electrode 5, is used to resistance wire power supply.
Entrance and exit one- way valve 2 and 6 can select existing market can obtain any known check valves known with correlative technology field, is not limited to illustrated one-way valve.
Fig. 2 is schematically illustrated according to the supercharging working principle in miniature pulse type liquid pump of the present invention, wherein in Fig. 2-1, show the Electric heating appliance 4 that is positioned at fluid passage, when Electric heating appliance 4 is energized heating during the first pulse heating time period, adjacent theretoly treat that pressurized liquid is heated and is vaporized into steam bubble, when steam bubble expands, in inlet one-way valve 2 and outlet between one-way valve 6, treat that pressurized liquid, because partially liq vaporization volume expands, causes wherein pressure to become large thus.
Fig. 3 shows according to the miniature pulse type liquid pump of second embodiment of the invention, comprise the heating equipment 4 on the periphery wall that is positioned at fluid pipeline, heating equipment 4 can be arranged on one section of fluid passage or all on periphery wall as required, similar shown in its working principle and Fig. 2.
Fig. 4 shows according to the miniature pulse type liquid pump of third embodiment of the invention, wherein fluid pipeline is as heating equipment 4, and treat that by tolerance in chemical property the metallic material of pressurized liquid forms, just, negative electrode 5 is connected respectively to both sides or the two ends of fluid passage, electrode 5 can be powered with pulse mode, fluid passage as heating equipment can heat and treat pressurized liquid when switching on, make the part adjoining with fluid passage treat pressurized liquid vaporization and form steam bubble, make thus to treat that pressurized liquid is because of its pressure increase of partially liq vaporization volumetric expansion, similar shown in its working principle and Fig. 2.
The invention still further relates to a kind of operation according to the method for above-mentioned miniature pulse type liquid pump, described heating equipment 4 is treated pressurized liquid described in pulse mode heating,, described in heating in section in the heating time at a plurality of intervals, treat pressurized liquid, two adjacent heating times, between section, have one period of non-heating period; This operating method comprises a plurality of cyclings, and each cycling includes following steps:
When until pressurized liquid, by inlet one-way valve 2, enter pump core 18 and be substantially full of liquid inlet and outlet between fluid passage time, start heating equipment 4 heats and treats pressurized liquid in the first heating period, make the vaporizing liquid to be heated of part and make its volumetric expansion cause pressure to increase, when pressure increases to the threshold value that is greater than outlet one-way valve 6, outlet one-way valve 6 is opened, and the liquid that pressure increases is pumped out;
Due to the discharge for the treatment of pressurized liquid along with discharging and the liquid Yin Wendu having vaporized reduction that during one period of non-heating period the first heating period after, the decline of remaining liq temperature causes, again become liquid, volumetric expansion reduces, fluid pressure between liquid inlet and outlet can be decreased to successively and be less than the outlet threshold value of one-way valve 6 and the threshold value of inlet one-way valve 2, described outlet and inlet one- way valve 2,6 are closed in succession, and the new pressurized liquid for the treatment of enters described fluid passage by inlet one-way valve 2.
Although described the present invention in conjunction with the preferred embodiments of the present invention in the above, those skilled in the art will obviously can expect some modifications and not depart from the present invention who limits as following claim.
Claims (7)
1. a miniature pulse type liquid pump, comprises the pump core with fluid passage, and described fluid passage has liquid inlet and outlet, for treating that pressurized liquid passes through described fluid passage;
It is characterized in that, inlet one-way valve and outlet one-way valve arrange respectively described liquid inlet and outlet port, for treating that pressurized liquid only flows on the described flow direction for the treatment of pressurized liquid described in making, the threshold value of wherein said outlet one-way valve is greater than the threshold value of described inlet one-way valve;
Heating equipment, it is between described liquid inlet and outlet, described in heating in pulse electrifying mode, treat pressurized liquid, make near the part described heating equipment treat that pressurized liquid is vaporized and forms steam bubble, described in making thus, treat that pressurized liquid is because of its pressure increase of vaporizing liquid volumetric expansion;
Wherein, when the described pressure until pressurized liquid increases to the threshold value higher than described outlet one-way valve, described outlet one-way valve is opened liquor pump is sent to described liquid outlet, and the amount of the liquid of institute's pumping can change according to described heating equipment position is different.
2. miniature pulse type liquid pump according to claim 1, is characterized in that, described pressurization device is Electric heating appliance.
3. miniature pulse type liquid pump according to claim 1, is characterized in that, described heating equipment arrange in described fluid passage with described in treat that pressurized liquid directly contacts.
4. miniature pulse type liquid pump according to claim 1, is characterized in that, described heating equipment arranges on the periphery wall of described fluid passage.
5. miniature pulse type liquid pump according to claim 1, it is characterized in that, described fluid passage treats that the metallic material of pressurized liquid forms described in tolerance in chemical property, positive and negative electrode is connected respectively to the two ends of described fluid passage, electrode can be powered with pulse mode, described in can heating when the energising as the described fluid passage of described heating equipment, treat pressurized liquid, make the part adjoining with described fluid passage treat pressurized liquid vaporization and form steam bubble, described in making thus, treat that pressurized liquid is because of its pressure increase of partially liq vaporization volumetric expansion.
6. miniature pulse type liquid pump according to claim 2, is characterized in that, described Electric heating appliance is resistance wire.
7. the operating method of the miniature pulse type liquid pump as described in any one in claim 1-6, it is characterized in that, described heating equipment is treated pressurized liquid described in pulse mode heating, in the heating time at a plurality of intervals section, described in heating, treat pressurized liquid, one period of non-heating period of interval between two adjacent heating time sections; This operating method comprises a plurality of cyclings, and each cycling includes following steps:
When until pressurized liquid, by described inlet one-way valve, enter described pump core and be substantially full of described liquid inlet and outlet between described fluid passage time, start the heating of described heating equipment in the first heating period, make the vaporizing liquid to be heated of part and make its volumetric expansion cause pressure to increase, when described pressure increases to the threshold value that is greater than described outlet one-way valve, described outlet one-way valve is opened, and the liquid that pressure increases is pumped out;
Along with treating the discharge of pressurized liquid, and the volumetric expansion that the temperature decline during described one period of non-heating period causes reduces, the liquid of vaporization becomes liquid again because temperature reduces, fluid pressure between described liquid inlet and outlet can be decreased to and be less than the threshold value of described outlet one-way valve and be less than subsequently outside liquid to be heated, described outlet closed check valve, and described outlet valve is opened, the outside pressurized liquid for the treatment of reenters described fluid passage by described inlet one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410022557.5A CN103742384A (en) | 2014-01-15 | 2014-01-15 | Micro-pulse type liquid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410022557.5A CN103742384A (en) | 2014-01-15 | 2014-01-15 | Micro-pulse type liquid pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103742384A true CN103742384A (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410022557.5A Withdrawn CN103742384A (en) | 2014-01-15 | 2014-01-15 | Micro-pulse type liquid pump |
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| Country | Link |
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| CN (1) | CN103742384A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641961A (en) * | 2016-12-27 | 2017-05-10 | 广东雷腾智能光电有限公司 | Car lamp radiating system and radiating method |
| CN110374837A (en) * | 2019-08-14 | 2019-10-25 | 清华大学 | Bladeless pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409961A (en) * | 1981-03-23 | 1983-10-18 | Hare Louis R O | Solar water pump |
| JPH08296551A (en) * | 1995-03-01 | 1996-11-12 | Silver Kk | Discharge check valve opening device for electromagnetic pump |
| KR100204580B1 (en) * | 1996-08-21 | 1999-06-15 | 정선종 | Apparatus of mode locking fiber laser used two mode fiber laser |
| US6123512A (en) * | 1997-08-08 | 2000-09-26 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Heat driven pulse pump |
| CN2637765Y (en) * | 2003-06-24 | 2004-09-01 | 清华大学 | One way valve micro pump having no moving part |
| CN201165951Y (en) * | 2008-02-03 | 2008-12-17 | 刘旭 | Corrosion resistance electromagnetical liquor pump raising apparatus |
| KR20100023103A (en) * | 2008-08-21 | 2010-03-04 | 김만수 | Pulsation boiler |
-
2014
- 2014-01-15 CN CN201410022557.5A patent/CN103742384A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409961A (en) * | 1981-03-23 | 1983-10-18 | Hare Louis R O | Solar water pump |
| JPH08296551A (en) * | 1995-03-01 | 1996-11-12 | Silver Kk | Discharge check valve opening device for electromagnetic pump |
| KR100204580B1 (en) * | 1996-08-21 | 1999-06-15 | 정선종 | Apparatus of mode locking fiber laser used two mode fiber laser |
| US6123512A (en) * | 1997-08-08 | 2000-09-26 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Heat driven pulse pump |
| CN2637765Y (en) * | 2003-06-24 | 2004-09-01 | 清华大学 | One way valve micro pump having no moving part |
| CN201165951Y (en) * | 2008-02-03 | 2008-12-17 | 刘旭 | Corrosion resistance electromagnetical liquor pump raising apparatus |
| KR20100023103A (en) * | 2008-08-21 | 2010-03-04 | 김만수 | Pulsation boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641961A (en) * | 2016-12-27 | 2017-05-10 | 广东雷腾智能光电有限公司 | Car lamp radiating system and radiating method |
| CN110374837A (en) * | 2019-08-14 | 2019-10-25 | 清华大学 | Bladeless pump |
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Application publication date: 20140423 |