CN201301789Y - Temperature compensation electromagnetic pump - Google Patents
Temperature compensation electromagnetic pump Download PDFInfo
- Publication number
- CN201301789Y CN201301789Y CNU2008202120205U CN200820212020U CN201301789Y CN 201301789 Y CN201301789 Y CN 201301789Y CN U2008202120205 U CNU2008202120205 U CN U2008202120205U CN 200820212020 U CN200820212020 U CN 200820212020U CN 201301789 Y CN201301789 Y CN 201301789Y
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- electromagnetic
- electromagnetic pump
- pump
- coils
- coil
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- Electromagnetic Pumps, Or The Like (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Disclosed is a temperature compensation electromagnetic pump, which comprises electromagnetic coils of the electromagnetic pump and negative temperature coefficient thermistances (NTC), wherein NTC elements are serially connected on the electromagnetic coils of the electromagnetic pump to overcome the shortcoming that the performances of the electromagnetic coils are affected by the temperature during work and simultaneously, NTC elements can also absorb surging currents to lower impulsions performed by surging currents to a diode and the electromagnetic coils of the electromagnetic pump, thereby improving stability and reliability of products. All coils of the electromagnetic pump have positive temperature coefficients, which results in comparatively large differences in performances between the heat and the cold electromagnetic coils of the electromagnetic pump. When NTC elements are serially connected on the electromagnetic coils of the electromagnetic pump, temperature compensations to the electromagnetic pump coils with positive temperature coefficients are achieved because of the negative temperature coefficients of the NTC elements and the performance differences between the heat and the cold coils of the electromagnetic pump are largely reduced, thereby stable performance of the electromagnetic pump is achieved.
Description
Technical field
The utility model relates to electromagnetic pump, more particularly, relates at the bigger situation down-off of temperature contrast and the temperature correction electromagnetic pump of pressure stability.
Background technique
Electromagnetic pump is to utilize alternating current to make alternating magnetic field, thereby driving the piston with magnetic moves up and down in housing and draws water or the purpose of other fluid to reach, it is reciprocating type fluid pump, when existing electromagnetic pump is started shooting at the cold line circle, because coil temperature is low, Coil impedance is relatively little, cause the actual power of electromagnetic fluid pump bigger, cause electromagnetic pump flow and pressure also bigger, As time goes on the electromagnetic pump coil temperature is more and more higher but after the start, impedance is increasing, and this just causes electromagnetic pump flow and pressure more and more littler; Cause electromagnetic pump cold line circle and heat coil flow and pressure gap too big, can not satisfy in the application some the usage requirement of the more stable occasion of traffic requirement.
It is diode that the electromagnetic coil of existing electromagnetic pump is in series with semiconductor element with it, and inrush current is very big when especially starting at work, often because inrush current punctures and the electromagnetic coil diode in series, causes complete machine to damage.
The solution problem of temperature rise of existing electromagnetic pump has two approach usually:
1, by the line footpath of increase electromagnetic coil, thereby increase electromagnetic coil weight to reduce temperature rise, it is passable doing function like this, but has increased product cost widely and increased small product size, this is not a good method that solves temperature effect.
2, thus utilize frequency down circuit to change the frequency of okperation of electromagnetic pump, to reach the purpose that reduces temperature rise, improve the discharge stability of electromagnetic pump, but this kind method cost is higher and reliability and impact resistance are relatively poor, neither solve the good method of temperature rise influence.
Summary of the invention
The purpose of this utility model provides a kind of temperature correction electromagnetic pump, by set up the thermistor NTC of negative temperature coefficient at the electromagnetic coil of electromagnetic pump body, reach the electromagnetic pump flow purpose consistent when cold and hot coil, overcome existing electromagnetic pump causes flow and pressure transient owing to the power instability that causes under different temperatures problem preferably with pressure.
The realization the technical solution of the utility model is: this temperature correction electromagnetic pump comprises the electromagnetic pump body, wherein is provided with electromagnetic coil in described electromagnetic pump body, and this electromagnetic coil is connected with temperature compensating element.
This technological scheme also comprises:
The described temperature compensating element that is connected with magnetic coil comprises the thermistor NTC of negative temperature coefficient.
The thermistor NTC of described negative temperature coefficient and described electromagnetic coil are for being connected in series.
The thermistor NTC of described negative temperature coefficient is connected in the pump housing with described electromagnetic coil.
The thermistor NTC of described negative temperature coefficient is connected outside the pump housing with described electromagnetic coil.
The thermistor NTC of described negative temperature coefficient is connected with any end of described electromagnetic coil.
The thermistor NTC of described negative temperature coefficient is connected with described electromagnetic pump coil through other circuit element.
The beneficial effect that the utlity model has: guarantee that electromagnetic pump certificate under different temperature has more stable power, and have than stable flow rate and pressure; Have simple in structure, characteristics such as cost is low, safe and reliable and long service life.
Description of drawings
Fig. 1 is an overall structure schematic representation of the present utility model.
Fig. 2 is the circuit theory diagrams of Fig. 1.
Wherein: 1 electromagnetic pump, 2 electromagnetic pump coils, 3 thermistor NTC, 4 diodes.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in the figure, this electromagnetic pump 1 is the improvement on original structure, promptly is connected with the thermistor NTC 3 of negative temperature coefficient on original electromagnetic coil 2, and thermistor NTC 3 can also can dispel the heat by air by the plastic cement heat radiation.
Working principle
This electromagnetic pump comprises the electromagnetic coil of electromagnetic pump, the thermistor of negative temperature coefficient (NTC), on the electromagnetic coil of described electromagnetic pump, be in series with the NTC element of negative temperature coefficient, to solve the shortcoming that electromagnetic coil is subjected to the Temperature Influence performance at work, the NTC element also can absorb inrush current with the impact of reduction inrush current to semiconductor element in the Electromagnetic water pump and electromagnetic coil simultaneously, thereby improves the stability and the reliability of product; Because any electromagnetic coil all has positive temperature coefficient effect, promptly Low ESR is more little more for the electromagnetic coil temperature, and power is big more, and flow when causing electromagnetic pump cold line circle and pressure are just big; Otherwise electromagnetic coil temperature HR high resistance more is big more, and power is more little, and flow and pressure are just little when causing the electromagnetic pump heat coil; For solving electromagnetic pump flow not temperature influence flow and pressure stability, when behind the NTC element of the negative temperature coefficient of having connected on the electromagnetic pump coil, because NTC is a negative temperature coefficient, be that the cold conditions impedance is big, hot impedance is low, temperature correction of electromagnetic pump coil that this just gives positive temperature coefficient is dwindled cold and hot coil flow of electromagnetic pump and pressure difference widely, thereby is reached the purpose of electromagnetic pump flow and pressure fast and stable.
It is diode that the electromagnetic coil of existing electromagnetic pump is in series with semiconductor element with it, and inrush current is very big when especially starting at work, often because inrush current punctures and the electromagnetic coil diode in series, causes complete machine to damage; Overcome the impact of inrush current behind the NTC effectively when on the electromagnetic pump coil, having connected, electromagnetic pump coil and diode are effectively protected, thereby improved the Security and the reliability of electromagnetic pump diode.
The temperature compensating element NTC of negative temperature coefficient can be different model and specification.
Temperature compensating element NTC can be connected with the electromagnetic pump coil through other circuit element.
Claims (7)
1, a kind of temperature correction electromagnetic pump comprises the electromagnetic pump body, it is characterized in that being provided with electromagnetic coil in described electromagnetic pump body, and this electromagnetic coil is connected with temperature compensating element.
2, temperature correction electromagnetic pump as claimed in claim 1 is characterized in that the described temperature compensating element that is connected with magnetic coil comprises the thermistor NTC of negative temperature coefficient.
3, temperature correction electromagnetic pump as claimed in claim 2 is characterized in that the thermistor NTC of described negative temperature coefficient and described electromagnetic coil are for being connected in series.
4, temperature correction electromagnetic pump as claimed in claim 2 is characterized in that the thermistor NTC of described negative temperature coefficient is connected in the pump housing with described electromagnetic coil.
5, temperature correction electromagnetic pump as claimed in claim 2 is characterized in that the thermistor NTC of described negative temperature coefficient is connected outside the pump housing with described electromagnetic coil.
6, temperature correction electromagnetic pump as claimed in claim 2 is characterized in that the thermistor NTC of described negative temperature coefficient is connected with any end of described electromagnetic coil.
7, temperature correction electromagnetic pump as claimed in claim 2 is characterized in that the thermistor NTC of described negative temperature coefficient is connected with described electromagnetic pump coil through other circuit element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202120205U CN201301789Y (en) | 2008-09-19 | 2008-09-19 | Temperature compensation electromagnetic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202120205U CN201301789Y (en) | 2008-09-19 | 2008-09-19 | Temperature compensation electromagnetic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201301789Y true CN201301789Y (en) | 2009-09-02 |
Family
ID=41085414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202120205U Expired - Fee Related CN201301789Y (en) | 2008-09-19 | 2008-09-19 | Temperature compensation electromagnetic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201301789Y (en) |
-
2008
- 2008-09-19 CN CNU2008202120205U patent/CN201301789Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 Termination date: 20160919 |