CN201331411Y - Vacuum pumping alarm device - Google Patents
Vacuum pumping alarm device Download PDFInfo
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- CN201331411Y CN201331411Y CNU2009200002463U CN200920000246U CN201331411Y CN 201331411 Y CN201331411 Y CN 201331411Y CN U2009200002463 U CNU2009200002463 U CN U2009200002463U CN 200920000246 U CN200920000246 U CN 200920000246U CN 201331411 Y CN201331411 Y CN 201331411Y
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- warning
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- 238000005086 pumping Methods 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001944 continuous distillation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model provides an extraction vacuum alarm device (100), include: a judging unit (102) for judging whether the degree of vacuum in the evacuated volume reaches a predetermined value during a first timing period; the first timing unit (104) is used for starting first timing at the starting moment of the vacuumizing process and stopping timing when the judgment result of the judgment unit is that the vacuum degree reaches a preset value or the first timing is over; a second timing unit (106) for starting second timing when the judgment result of the judgment unit is that the vacuum degree reaches a preset value; and an alarm unit (108) for issuing a second alarm upon expiration of the first time or issuing a first alarm upon expiration of the second time. The utility model discloses an automatic judge by the vacuum in the evacuation volume whether reach the requirement to send corresponding warning to the judged result, thereby improve production efficiency's beneficial effect.
Description
Technical field
The utility model relates to refrigerating field, more specifically, relates to a kind of extracting vacuum warning device.
Background technology
Two adjacent operations are arranged: vacuumize-cooling medium charging on the air-conditioning production line.Produce the air-conditioning of going up employing in the past and vacuumized technology, judge the vacuum tightness that vacuumizes by artificial experience (evacuated time permanent), judge that by the reading of artificial observation vacuum meter the vacuum tightness that vacuumizes judges whether its vacuum values meets technological requirement, therefore the back can occur vacuumizing and not do over again or vacuumize the phenomenon that " excessive " loses time, thereby influence production efficiency because of vacuum tightness meets technological requirement.Such determination methods occurs subjective erroneous judgement unavoidably and causes carrying out next step cooling medium charging, and this determination methods increased workman's workload, thereby has influenced production efficiency and product quality.
Therefore, the alarm method that vacuumizes of available technology adopting normally makes the time relay pick up counting (artificial trigger) by pressing switch manually vacuumizing the zero hour.That is, the time relay only serves as the effect of " stopwatch countdown " in warning device, judges its vacuum tightness whether (timing covers whole vacuum) up to standard when its is responsible for from " vacuumizing (artificially connecting the switch timing) " to " countdown end ".But because when vacuumizing beginning, just can be extracted into the value (gaseous impurities is found time) of closing on minimum point within a short period of time, keep one section mobile equilibrium (liquid phase impurity constantly volatilizees, the pumpage of the continuous distillation of solid impurity and vacuum pump form and produce and the mobile equilibrium of extracting out) afterwards.When being evacuated down to minimum point rear enclosed vessel port, because inevitably leak and the distillation of the interior solid impurity of volume and the volatilization of liquid phase impurity in the container, make the vacuum values in the container have the feature that bounce-back raises, but the value of bounce-back and nonlinear unlimited increase.So, thereby make the False Rate of this detection method increase because the quilt in the vacuum is taken out the decline degree of container vacuum tightness and the randomness and the undulatory property of time relation.
For example, the vacuum tightness of the vacuum tank of expectation air conditioner is 22pa, can when finding time this vacuum tank be extracted into 20pa so.The way of prior art is, time set is 3min, and the vacuum tightness setting value is 20Pa, connect to pick up counting behind the pipe for the container of sealing and found time.Because the uncertain factor of finding time make that its vacuum tightness only drops to 21Pa-23Pa (greater than 20Pa) when being evacuated to 3min, and warning device still can be sent the underproof warning of sealing of this container, thereby this container is done over again.
Therefore, implement in the process of the present utility model, find that there is the problem of inefficiency at least in prior art the inventor.
The utility model content
Therefore, the purpose of the utility model embodiment promptly is to provide a kind of extracting vacuum warning device that can raise the efficiency.
According to an aspect of the present utility model, a kind of extracting vacuum warning device is provided, comprising: judging unit, be connected to the volume that is evacuated, be used for during first timing, judging whether the vacuum tightness that vacuumizes in the volume reaches predetermined value; First timing unit is electrically connected to judging unit, is used for beginning first timing zero hour in vacuum, and is that vacuum tightness stops timing when reaching predetermined value or first timing expiration in the judged result of judging unit; Second timing unit is electrically connected to judging unit, when being used for judged result at judging unit and being vacuum tightness and reaching predetermined value, begins second timing; And a plurality of alarm units, be connected respectively to first timing unit and second timing unit, send first when being used for when first timing expiration of first timing unit, sending second warning or second timing expiration and report to the police at second timing unit.
Wherein, judging unit is to be installed to the pressure sensing cell that is evacuated in the volume.
Preferably, first to report to the police be to be used to point out the warning that stops to vacuumize, and second to report to the police be to be used to point out vacuumize unusual warning.
Preferably, a plurality of alarm units are green light and red light.
Wherein, first timing unit and second timing unit all are time relays.
Preferably, this extracting vacuum warning device also comprises: display unit, be connected to pressure sensing cell, and be used to show the detected force value of pressure sensing cell.
The beneficial effect of the utility model embodiment is, judges in advance by judge module whether container vacuumizes and occurs unusual and use second timing module that normal container is finished follow-up evacuation, thereby improved production efficiency.
Other features and advantages of the utility model will be set forth in the following description, and, partly from instructions, become apparent, perhaps understand by implementing the utility model.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure in the instructions of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the block scheme according to the extracting vacuum warning device of the utility model embodiment; And
Fig. 2 is the circuit connection diagram according to the extracting vacuum warning device of another embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.In the specific embodiment part of this instructions, same reference numerals is represented same or similar element.
Fig. 1 is the block scheme according to the extracting vacuum warning device 100 of the utility model embodiment.
With reference to Fig. 1, extracting vacuum warning device 100 comprises: judging unit 102, be connected to the volume that is evacuated, and be used for during first timing, judging whether the vacuum tightness that vacuumizes in the volume reaches predetermined value; First timing unit 104 is electrically connected to judging unit 102, is used for beginning first timing zero hour in vacuum, and is that vacuum tightness stops timing when reaching predetermined value or first timing expiration in the judged result of judging unit 102; Second timing unit 106 is electrically connected to judging unit 102, when being used for judged result at judging unit 102 and being vacuum tightness and reaching predetermined value, begins second timing; And a plurality of alarm units 108, be connected respectively to first timing unit 104 and second timing unit 106, send first when being used for when first timing expiration of first timing unit 104, sending second warning or second timing expiration and report to the police at second timing unit 106.
Extracting vacuum warning device 100 by judging unit in first timing, judge container whether vacuumize reach predetermined value (note that this predetermined value should greater than the expectation end value), thereby can determine in advance whether container occurs unusually.If first timing expiration finds that vacuum tightness can not reach predetermined value, can determine that then container vacuumizes appearance unusually, thereby when first timing expires, just finish vacuumizing of this container, in time this container is done over again.
And during first timing, find that vacuum tightness can reach predetermined value, can determine that then container vacuumizes normally.Because this moment, container vacuumized normally, and vacuum tightness reached predetermined value, so can infer experiencing vacuumizing of a period of time, just can finish vacuumizing of this container, and the adding of this embodiment second timing module then can realize this technical scheme.
For example, above-mentioned prior art is evacuated down to the container of 20Pa for expectation, is to judge vacuum tightness reaches 20Pa when 3min expires.And extracting vacuum warning device 100 can be made as predetermined value 30Pa, and first timing is made as 2min.If vacuum tightness reaches 30Pa in 2min, then continue to take out 1min, 1min need not to judge whether to reach 20Pa again when finishing; And in 2min, do not reach 30Pa, then container is done over again.Thereby avoided each container of the prior art all to need to be extracted into 3min, and the low efficiency problem that does not have allowance to bring.
Generally speaking, extracting vacuum warning device 100 is judged in advance by judging unit whether container vacuumizes and is occurred unusual and use second timing module that normal container is finished follow-up evacuation, thereby improved production efficiency.
Judging unit 102 can be to be installed to the pressure sensing cell that is evacuated in the volume.
First warning that alarm unit 108 sends can be the warning that prompting stops to vacuumize, and second warning can be the warning that volume is returned in prompting.Wherein, first reports to the police and second warning can be a sound and light alarm, for example is respectively that green light adds buzzing and red light adds buzzing.Report to the police and second prompting of reporting to the police according to first, those skilled in the art can take measures areput, thereby the vacuum of can be accurately and judging the volume of taking out efficiently reach occur in technological requirement or the vacuum such as the sealing of taking out volume underproof unusual, thereby make corresponding processing.
Preferably, this extracting vacuum warning device 100 can also comprise: the display unit (not shown), be connected to pressure sensing cell 102, and be used to show pressure sensing cell 102 detected force value.By display unit, can real-time monitored be taken out the interior vacuum tightness of volume, thereby be made that whole vacuum can be monitored to quilt.
Fig. 2 is the circuit connection diagram according to the extracting vacuum warning device of another embodiment of the utility model.
As shown in Figure 2, draw independently power supply of two parallel connections, respectively as automatic warning loop 200 with as the power supply of the vacuum meter 202 of pressure sensing cell from the general supply line.Therefore, vacuum meter 202 can work alone and influence that whether loop 300 that is not subjected to report to the police is automatically opened, but since vacuum meter 202 be connected in series in the automatic warning loop, so the loop of reporting to the police automatically must could operate as normal under the prerequisite that vacuum meter 202 is opened.Air switch 204 is normally closed, if the effect of safeguard protection is played in emergency condition meeting automatic cutouts such as appearance electric leakage.Emergency stop switch 220 is normally closed, if when fortuitous event occurring, can manually disconnect, with the effect of the safeguard protection of getting up.
Automatically warning loop 200 energising back relay indicating lights 206 are bright, and red light 208 and green light 210 go out, very first time relay 212 beginnings (T1) clocking internal during first timing, and second time relay 214 is not-time.
In vacuum, with there will be two kinds of situations: situation A, vacuum meter 202 actions when vacuumizing the vacuum tightness value P0 that reaches setting are so that normal-closed end 216 disconnections, Chang Kaiduan 218 connects, thereby make very first time relay 212 stop timing, (T2) timing in second time relay 214 begins during second timing, second time relay, 214 actions of second timing expiration back make green light 210 bright to send first warning, the vacuum tightness of reminding the staff to be taken out volume has reached requirement, can stop it being vacuumized; And situation B, when after the setting-up time T1 of very first time relay 212 expiration, vacuumize when still failing to make vacuum tightness to reach the vacuum values P0 of setting, 212 actions of very first time relay make red light bright to send second warning, the vacuum tightness of reminding the staff to be taken out volume can't reach requirement, may there be big leakage, should does over again being taken out volume.
Therefore, the foregoing description of the present utility model has realized whether the vacuum tightness that automatic judgement is evacuated in the volume reaches requirement, and sends corresponding warning at judged result, thus the beneficial effect of enhancing productivity.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. an extracting vacuum warning device (100) is characterized in that, comprising:
Judging unit (102) is connected to the volume that is evacuated, and is used for judging during first timing whether the described vacuum tightness that vacuumizes in the volume reaches predetermined value;
First timing unit (104), be electrically connected to described judging unit (102), be used for beginning described first timing zero hour, and be that described vacuum tightness stops timing when reaching described predetermined value or described first timing expiration in the judged result of described judging unit in described vacuum;
Second timing unit (106) is electrically connected to described judging unit (102), when being used for judged result at described judging unit and being described vacuum tightness and reaching described predetermined value, begins second timing; And
A plurality of alarm units (108), be connected respectively to described first timing unit (104) and described second timing unit (106), be used for when described first timing of described first timing unit expires, sending second warning or when described second timing of described second timing unit expires, sending first and report to the police.
2. extracting vacuum warning device according to claim 1 is characterized in that, described judging unit (102) is to be installed to the described pressure sensing cell that is evacuated in the volume.
3. extracting vacuum warning device according to claim 1 is characterized in that, described first to report to the police be to be used to point out the warning that stops to vacuumize, and described second to report to the police be to be used to point out vacuumize unusual warning.
4. extracting vacuum warning device according to claim 3 is characterized in that, described a plurality of alarm units are green light and red light.
5. extracting vacuum warning device according to claim 1 is characterized in that, described first timing unit (104) and described second timing unit (106) all are time relays.
6. extracting vacuum warning device according to claim 2 is characterized in that, also comprises:
Display unit is connected to described pressure sensing cell, is used to show the detected force value of described pressure sensing cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200002463U CN201331411Y (en) | 2009-01-13 | 2009-01-13 | Vacuum pumping alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200002463U CN201331411Y (en) | 2009-01-13 | 2009-01-13 | Vacuum pumping alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331411Y true CN201331411Y (en) | 2009-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200002463U Expired - Fee Related CN201331411Y (en) | 2009-01-13 | 2009-01-13 | Vacuum pumping alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201331411Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415858A (en) * | 2015-12-28 | 2016-03-23 | 合肥晶澳太阳能科技有限公司 | Photovoltaic assembly laminator with alarm prompting function |
-
2009
- 2009-01-13 CN CNU2009200002463U patent/CN201331411Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415858A (en) * | 2015-12-28 | 2016-03-23 | 合肥晶澳太阳能科技有限公司 | Photovoltaic assembly laminator with alarm prompting function |
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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 |
Granted publication date: 20091021 Termination date: 20170113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |