CN103090460A - Method and device for discharging condensate water for heating, ventilating or air conditioning system - Google Patents
Method and device for discharging condensate water for heating, ventilating or air conditioning system Download PDFInfo
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- CN103090460A CN103090460A CN2011103482924A CN201110348292A CN103090460A CN 103090460 A CN103090460 A CN 103090460A CN 2011103482924 A CN2011103482924 A CN 2011103482924A CN 201110348292 A CN201110348292 A CN 201110348292A CN 103090460 A CN103090460 A CN 103090460A
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Abstract
The invention discloses a method and device for discharging condensate water for a heating, ventilating or air conditioning system and relates to the field of heating ventilation air conditioning. The method and device solves the problem that the system stops operating due to the fact that a single water discharging pump is used, and the reliability of system operation is improved. The method for discharging the condensate water includes: detecting liquid level height of the condensate water in a water receiving plate, and the water receiving plate is used for collecting the condensate water generated on a heat exchanger; when the liquid level height of the condensate water is detected to be higher than a preset first high liquid level, a main water discharging pump is controlled to be opened to discharge water; and when time during which the liquid level height of the condensate water is higher than the preset first high liquid level is detected to exceed first preset time or the liquid level height of the condensate water is detected to be higher than a preset second high liquid level, a spare water discharging pump is controlled to be opened to discharge water, and the preset second high liquid level is higher than the preset first high liquid level.
Description
Technical field
The present invention relates to field of heating ventilation air conditioning, relate in particular to a kind of condensed water elimination method and apparatus for heating, ventilation or air handling system.
Background technology
When heating, ventilation or air handling system operation, can produce condensed water on the heat exchanger of system, condensed water falls and is pooled in the drip tray of heat exchanger below along heat exchanger, therefore need condensate drain that the condensed water in drip tray is in time discharged, otherwise the accumulation of condensed water can cause bacterium amount reproduction, contaminated air; Also can affect the operation of electric equipment.
In prior art, condensate drain is arranged on the below of heat exchanger, comprising: drip tray of be used for collecting condensed water, two switches, draining pump and drainpipe.Switch is fixed in drip tray, for detection of the liquid level of the condensed water in drip tray.Continuous service along with heating, ventilation or air handling system, the liquid level of the condensed water in drip tray raises, when liquid level surpasses the height of first setting, first corresponding switch is closed, the draining pump that is connected with this switch starts and according to the operation of Preset Time length, condensed water is discharged to the system outside; Higher than the position of first switch setting during position that second switch set, when the lasting rising of liquid level surpasses the height of second setting, second switch closure, trigger siren and send the overflow alarm, heat simultaneously, ventilation or air handling system out of service, no longer produce condensed water.
In said process, the inventor finds prior art, and there are the following problems at least:
When the draining pump of condensate drain breaks down, when condensed water can not be discharged, can only wait for the overflow alarm, and heating, ventilation or air handling system are out of service, cause system's reliability of operation lower.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of condensed water elimination method and apparatus, can solve existing scheme condensed water easily occurs can not in time discharge, cause the problem that heating, ventilation or air handling system are out of service, improve system's reliability of operation.
For solving the problems of the technologies described above, embodiments of the invention adopt following technical scheme:
A kind of condensed water elimination method for heating, ventilation or air handling system comprises:
Detect the liquid level of condensed water in drip tray, described drip tray is used for collecting the condensed water that produces on the heat exchanger of heating, ventilation or air handling system;
When the liquid level that condensed water detected during higher than default the first high liquid level, control and open main drain pump and carry out draining;
Surpass the first Preset Time when the liquid level that condensed water detected higher than time of default the first high liquid level or during higher than default the second high liquid level, control and open redundant sump pump and carry out draining, described default the second high liquid level is higher than described default the first high liquid level.
A kind of condensate drain for heating, ventilation or air handling system, described condensate drain comprises:
Be used for collecting the drip tray of the condensed water that produces on heat exchanger;
For detection of the liquid level detection device of condensed water liquid level in described drip tray, be arranged in described drip tray;
Be used for discharging main drain pump and the redundant sump pump of described condensed water, be arranged at described drip tray outside, and be connected with described drip tray by pipeline;
The controller that is connected with described main drain pump, redundant sump pump and described liquid level detection device respectively, described controller comprises:
First opens the unit, is used for, controlling the described main drain pump of unlatching and carrying out draining during higher than default the first high liquid level when the liquid level that condensed water detected;
Second opens the unit, be used for surpassing the first Preset Time when the liquid level that condensed water detected higher than time of default the first high liquid level or when presetting the second high liquid level, control the unlatching redundant sump pump and carry out draining, described default the second high liquid level is higher than described default the first high liquid level.
A kind of heating, ventilation or air handling system comprise: the condensate drain of the condensed water that heat exchanger and be used for produces on blowdown exchanger, and described condensate drain comprises:
Be used for collecting the drip tray of the condensed water that produces on heat exchanger;
For detection of the liquid level detection device of condensed water liquid level in described drip tray, be arranged in described drip tray;
Be used for discharging main drain pump and the redundant sump pump of described condensed water, be arranged at described drip tray outside, and be connected with described drip tray by pipeline;
The controller that is connected with described main drain pump, redundant sump pump and described liquid level detection device respectively, described controller comprises:
First opens the unit, is used for, controlling the described main drain pump of unlatching and carrying out draining during higher than default the first high liquid level when the liquid level that condensed water detected;
Second opens the unit, be used for surpassing the first Preset Time when the liquid level that condensed water detected higher than time of default the first high liquid level or when presetting the second high liquid level, control the unlatching redundant sump pump and carry out draining, described default the second high liquid level is higher than described default the first high liquid level.
The condensed water elimination method and apparatus that the embodiment of the present invention provides according to the liquid level of the condensed water that detects, when needs are discharged condensed water, is controlled the main drain pump unlatching condensed water pump drainage is gone out; When condensed water produces too fast or main drain pump when breaking down, control redundant sump pump and open the pump drainage condensed water.The embodiment of the present invention has solved heating, ventilation or the air handling system problem out of service that causes due to the single draining pump of use in the prior art, has improved system's reliability of operation.
Description of drawings
Fig. 1 is the embodiment of the present invention one condensed water elimination method flow diagram one;
Fig. 2 is condensed water elimination method flow diagram two in the embodiment of the present invention one;
Fig. 3 realizes the flow chart of draining pump fault alarm in the embodiment of the present invention one;
Fig. 4 is the particular flow sheet of condensed water elimination method in the embodiment of the present invention one;
Fig. 5 is the top view of the condensate drain in the embodiment of the present invention two;
Fig. 6 is the structured flowchart of the controller in the embodiment of the present invention two;
Fig. 7 is the top view of the condensate drain in the embodiment of the present invention three;
Fig. 8 is the schematic flow sheet that the condensate drain in the embodiment of the present invention three is controlled condensed water elimination;
Fig. 9 is the top view of the condensate drain in the embodiment of the present invention four;
Figure 10 is drip tray in the embodiment of the present invention four and the structural representation of overflow disk.
Description of reference numerals:
The 10-drip tray, 11-overflow disk, 12-controller, 13-pipeline, the next door that 14-is public;
The 20-checkout gear, 21-the first switch, 22-the second switch,
23-the 3rd switch; The 30-draining pump, 31-first row water pump, 32-second row water pump;
The 40-warning device, 41-first row water pump accident warning device,
42-second row water pump accident warning device, the 43-overflow alarming device.
The specific embodiment
The embodiment of the present invention provides a kind of condensed water elimination method and apparatus for heating, ventilation or air handling system, can solve existing scheme and can not in time discharge because of condensed water the system's problem out of service that causes, improve heating, ventilation or air handling system reliability of operation.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.The specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Embodiment one
The embodiment of the present invention provides a kind of condensed water elimination method for heating, ventilation or air handling system, and as shown in Figure 1, the method comprises the following steps:
The liquid level of step 101, detection drip tray condensed water, described drip tray is used for collecting the condensed water that produces on the heat exchanger of heating, ventilation or air handling system;
The liquid level of condensed water in the described detection drip tray of this step, can be by or several switches that detect different liquid levels be set in drip tray, particularly, during height that the liquid level of the condensed water in drip tray is set higher than a certain switch, corresponding switch is closed, produce the signal that shows liquid level, also can detect by liquid level sensor is set the liquid level of condensed water in drip tray in addition.In described detection drip tray, the liquid level of condensed water is not limited in above-described mode, introduces no longer one by one herein.
Wherein, default the first high liquid level in this step is to set in advance according to the working condition of heating, ventilation or air handling system and the degree of depth of drip tray, is used for controlling the unlatching of main drain pump.The degree of depth that the height of described default the first high liquid level is traditionally arranged to be drip tray deducts 10%～40% of gained difference after preset liquid level, and the minimum liquid level height of the preset liquid level condensed water that to be liquid level detection device can detect.When the liquid level of condensed water in drip tray during higher than default the first high liquid level, illustrate that this moment, the condensed water in drip tray need in time be discharged, otherwise will affect the operation of heating, ventilation or air handling system or produce other negative consequences, that is to say, when the liquid level of condensed water during higher than default the first high liquid level, just need the opening water discharge pump in time to discharge condensed water in drip tray.
Described default the second high liquid level of this step is higher than default the first high liquid level, the degree of depth that the height of described default the second high liquid level is traditionally arranged to be drip tray deduct preset liquid level afterwards the gained difference 40%～70%.In addition, when heating, ventilation or air handling system work, the condensed water that produces accumulates in drip tray, making condensed water liquid level in drip tray rise to described default the second high liquid level from described default the first high liquid level needs certain hour, and described the first Preset Time can fluctuate 0～10% on the basis of this certain hour.When the liquid level of condensed water surpasses the first Preset Time higher than time of default the first high liquid level, perhaps when the liquid level of condensed water during higher than default the second high liquid level, explanation is in the situation that the main drain pump unlatching, the liquid level of drip tray condensed water did not descend or descended slow this moment, possible reason is that condensed water produces too fast or main drain pump breaks down, need to open redundant sump pump and come the pump drainage condensed water, prevent the too high triggering overflow warning of condensed water liquid level and cause that system stops.
The condensed water elimination method that the embodiment of the present invention provides is controlled according to the liquid level of the condensed water that detects and is opened main drain pump and redundant sump pump carries out draining.The liquid level of condensed water rises to certain altitude in drip tray being detected, when needing to discharge condensed water, controls main drain pump and opens, and the condensed water pump drainage is gone out; When the liquid level that condensed water detected does not descend or descended when slow, illustrate that this moment, condensed water produced too fast or main drain pump breaks down, control redundant sump pump and open the pump drainage condensed water.Owing to having used at least two draining pumps, even if main drain pump breaks down, also can come the pump drainage condensed water with redundant sump pump, so can not report to the police because of the too high triggering overflow of condensed water liquid level, make system stop.Can solve in prior art and condensed water easily to occur in time to discharge, cause the problem that heating, ventilation or air handling system are out of service, improve system's reliability of operation.
Wherein, the described main drain pump of the present embodiment is a draining pump of selecting in turn before each pump drainage condensed water in described at least two draining pumps, and described redundant sump pump is not to be selected as the draining pump of main drain pump at least in described two draining pumps.
In condensed water elimination process, before each pump drainage condensed water, select a draining pump as main drain pump when draining is initial, main drain pump is first-selected the unlatching when the pump drainage condensed water, is not selected as the draining pump of main drain pump as redundant sump pump when initial.draining pump of a condensed water elimination process choosing is as main drain pump, each draining pump can be in turn once as main drain pump, for example adopt first, two draining pumps of second, for the first time during condensed water elimination, the first draining pump starts as main drain pump, during to condensed water elimination for the second time, the second draining pump starts as main drain pump, the first draining pump is again as main drain pump for the third time, the like, select a draining pump as main drain pump during each draining, each draining pump is in turn once as main drain pump, so long-time words of considering, each draining pump at least two draining pumps that the present embodiment uses equates as the chance of main drain pump, can prevent from using certain draining pump because concentrating, make this draining pump service time long and break down.When condensed water begins to discharge, main drain pump is opened the condensed water pump drainage is gone out, when condensed water produces too fast or main drain pump when breaking down, control again redundant sump pump and open the pump drainage condensed water, prevent the too high triggering overflow warning of condensed water liquid level accumulation and cause that system stops, raising system reliability of operation is changed another draining pump next time as main drain pump, in turn so the access times of each draining pump are more or less the same theoretically.
Further, the described condensed water elimination method of the present embodiment, as shown in Figure 2, described method also comprises:
Preset liquid level in this step is the minimum liquid level height of the liquid level detection device condensed water that can detect, and when in drip tray, the condensed water liquid level was lower than preset liquid level, illustrating no longer needed the outside draining of draining pump.Described the second Preset Time, greater than when having a normal draining of energy at least in main drain pump and redundant sump pump, in drip tray, the condensed water liquid level drops to the needed time of preset liquid level from default the first high liquid level, all drains the needed time less than condensed water in drip tray from default the first high liquid level.
in the present embodiment condensed water elimination method, at least two draining pumps have been used, and at least two draining pumps are in turn as main drain pump, in a condensed water elimination process, when the condensed water in drip tray needs in time to discharge, opening main drain pump goes out the condensed water pump drainage, when condensed water produces too fast or main drain pump when breaking down, control again redundant sump pump and open the pump drainage condensed water, when the condensed water in drip tray drops to when not needing the outside draining of draining pump, close main drain pump and redundant sump pump, next time is when needing to discharge condensed water, begin condensed water elimination process for the second time.The condensed water elimination method that the present embodiment provides can solve and condensed water easily occurs in existing scheme can not in time discharge, and causes the problem that heating, ventilation or air handling system are out of service, has improved system's reliability of operation.
Further, the condensed water elimination method that the present embodiment provides also can realize the function of draining pump fault alarm, and when some draining pumps of at least two draining pumps that use broke down, sending reports to the police showed that this draining pump breaks down.Concrete, as shown in Figure 3, described method also comprises:
This draining pump as main drain pump of mark in this step, for example, can be each draining pump a count value is set, when described draining pump is opened as main drain pump, and when redundant sump pump is opened, this count value as the draining pump of main drain pump is added one.
The mark number of times of described draining pump is bad relevant with the operation conditions of corresponding draining pump, because from the redundant sump pump unlocking condition as can be known, when redundant sump pump is opened, the liquid level of condensed water surpasses the first Preset Time higher than time of default the first high liquid level or higher than default the second high liquid level, illustrate that this moment as the ability of the described draining pump pump drainage condensed water of main drain pump not or break down, be that the main drain pump operation conditions is bad, need to open redundant sump pump pump drainage condensed water, this draining pump as main drain pump of this tense marker; So the counting of certain draining pump can represent the bad number of times of operation conditions of corresponding draining pump.The long-time words of considering, each draining pump that the present embodiment uses is equal as the chance of main drain pump, so the mark number of times of final draining pump should be more or less the same in theory, when the mark number of times of certain draining pump relatively the mark number of times of other draining pumps increase too fast, when exceeding designated value than the mark number of times of other draining pumps, just can judge that this draining pump breaks down.
Designated value described in this step is used for judging whether draining pump breaks down, it is a kind of empirical value, when specifically arranging, can be when all draining pumps all work, investigate the count value of these draining pumps, that selects to occur in these count value differs maximum that difference as maximum difference, and described designated value is greater than maximum difference.
The present embodiment is owing to having used at least two draining pumps, be that box lunch has a draining pump to break down, when sending the draining pump failure alarm signal, can also use other draining pumps to continue draining, can not trigger overflow and report to the police and cause that system stops, then can select voluntarily suitable maintenance time, the draining pump that sends failure alarm signal is keeped in repair, and fault is clear and definite, repairs more convenient.
The method of condensed water elimination described in the present embodiment also can comprise:
Step 108, when the liquid level of condensed water is higher than default overflow liquid level in described drip tray being detected, send the overflow alarm signal.The degree of depth that this height of described default overflow liquid level is traditionally arranged to be drip tray deducts 80%～90% of gained difference after preset liquid level.The overflow alarm signal can make system closing, stops producing condensed water, has improved system's Operation safety.
The concrete condensed water elimination flow process of the described condensed water elimination method of the present embodiment specifically comprises as shown in Figure 4:
Whether step 207, judgement exceed designated value as the counting that the counting of the draining pump of main drain pump is compared to other draining pumps of redundant sump pump, exceed designated value if be compared to the counting of other draining pumps of redundant sump pump as the counting of the draining pump of main drain pump, illustrate that main drain pump breaks down, execution in step 208 is reported to the police, otherwise continues execution in step 209;
The condition of opening redundant sump pump in the present embodiment step 202 also can be set to the liquid level of condensed water in drip tray higher than default the second high liquid level, wherein default the second high liquid level is the liquid level that sets in advance, and higher than default the first high liquid level, lower than the overflow liquid level, all the other steps are similar.
The above is a concrete condensed water elimination flow process in the present embodiment condensed water elimination method, and this method is applied to heat, during the drainage arrangement of ventilation or air handling system, and repeated execution of steps 201 is to step 210.The described condensed water elimination method of the present embodiment has improved system's reliability of operation and security by controlling main drain pump and redundant sump pump not opening in the same time the pump drainage condensed water, and owing to being provided with fault alarm, easy to maintenance.
Embodiment two
The embodiment of the present invention provides a kind of condensate drain for heating, ventilation or air handling system, as shown in Figure 5, comprising:
Be used for collecting the drip tray 10 of the condensed water that produces on heat exchanger;
For detection of the liquid level detection device 20 of condensed water liquid level in described drip tray 10, be arranged in described drip tray 10;
Be used for discharging main drain pump and the redundant sump pump of described condensed water, be arranged at described drip tray 10 outsides, and be connected with described drip tray 10 by pipeline 13, the present embodiment has adopted at least two draining pumps 30, select in draining pump 30 one as main drain pump, all the other draining pumps 30 are as redundant sump pump;
The controller that is connected with described main drain pump, redundant sump pump and described liquid level detection device 20 respectively, described controller 12 comprises:
First opens the unit, is used for, controlling the described main drain pump of unlatching and carrying out draining during higher than default the first high liquid level when the liquid level that condensed water detected;
Second opens the unit, be used for surpassing the first Preset Time when the liquid level that condensed water detected higher than time of default the first high liquid level or when presetting the second high liquid level, control the unlatching redundant sump pump and carry out draining, described default the second high liquid level is higher than described default the first high liquid level.
The present embodiment has adopted at least two draining pumps 30, selects a draining pump 30 as main drain pump, and all the other draining pumps are as redundant sump pump; Controller 12 is controlled main drain pump and the outside draining of redundant sump pump according to the described liquid level testing result of input, when main drain pump breaks down, also has the outside draining of redundant sump pump, solve system's problem out of service of using single draining pump to cause, improved heating, ventilation or air handling system reliability of operation.
Further, controller 12 in the present embodiment also comprises: selected cell, be used for before each pump drainage condensed water, select one as main drain pump at least two draining pumps, described at least two draining pumps are selected as main drain pump in turn, are not selected as the draining pump of main drain pump as redundant sump pump.Each draining pump can be in turn once as main drain pump, so long-time words of considering, each draining pump of at least two draining pumps that the present embodiment uses equates as the chance of main drain pump, can prevent from like this concentrating and use certain draining pump, make this draining pump break down because service time is long.
As shown in Figure 6, above-mentioned controller 12 is opened unit 16 and second except selected cell 15, first and is opened unit 17, also comprise: closing unit 18, be used for when the liquid level that condensed water detected during lower than preset liquid level, perhaps when the liquid level that condensed water detected surpasses the second Preset Time lower than the time of presetting the first high liquid level, close described main drain pump and redundant sump pump.So both can open main drain pump when needs discharge condensed water goes out the condensed water pump drainage; Again can be under special circumstances, when for example or main drain pump too fast when the condensed water generation breaks down, open redundant sump pump and come the pump drainage condensed water, solve system's problem out of service that prior art uses single draining pump to cause, improved heating, ventilation or air handling system reliability of operation.
In addition, as shown in Figure 5, the condensate drain in the present embodiment also comprises: be connected with described controller 12, be used for sending the warning device 40 of failure alarm signal, improved system's reliability of operation and security, and owing to being provided with fault alarm, easy to maintenance.
The condensate drain that the present embodiment provides is controlled main drain pump and redundant sump pump pump drainage condensed water, has solved system's problem out of service that prior art uses single draining pump to cause, improves heating, ventilation or air handling system reliability of operation.
Embodiment three
as shown in Figure 7, it is a kind of for heating that the present embodiment also provides, ventilate or the air handling system condensate drain, be different from the condensate drain in embodiment two, the present embodiment has used two draining pumps, be respectively first row water pump 31 and second row water pump 32, liquid level detection device in the present embodiment is three switches, be arranged in drip tray, the liquid level of the first switch 21 correspondences is preset liquid level, the liquid level of the second switch 22 correspondences is default the first high liquid level, the liquid level of the 3rd switch 23 correspondences is default overflow liquid level.When the liquid level of the condensed water in drip tray when preset liquid level is above, the first switch 21 closures, otherwise disconnect; In default the first high liquid level when above, the second switch is closed, otherwise disconnects when the liquid level of the condensed water in drip tray; Similarly, liquid level when default overflow liquid level is above, the 3rd switch 23 closures, otherwise disconnect.Warning device in the present embodiment comprises, be used for the first row water pump break down alarm first row water pump warning device 41, be used for second row water pump break down second row water pump warning device 42 and the overflow alarming device 43 of alarm.Controller 12 in the present embodiment be that above-mentioned three switches are connected with first row water pump 31 and second row water pump 32, warning device and described liquid level detection device respectively.
The function of the present embodiment middle controller 12 can realize by single-chip microcomputer and relay, switch produces 0 or 1 liquid level signal input single-chip microcomputer, the control program that operation is finished writing in advance on single-chip microcomputer, produce the control signal of 1 (or 0), by the opening and closing that (or closing) controls draining pump of opening of control relay.Wherein, control the draining pump alternately and start as main drain pump when each draining is initial, can realize by the boot sequence variable is set in program; Can realize by in program, integration variable being set for judging the counting of the draining pump whether draining pump breaks down.
The flow process of the condensate drain control discharging condensed water that the present embodiment provides as shown in Figure 8.In system when operation,, the moisture of the air by heat exchanger can condensation produce condensed water, and condensed water falls and be gathered in drip tray along heat exchanger, operation along with system, the liquid level of the condensed water in drip tray can raise, and condensate drain begins to discharge condensed water, specifically comprises:
When the liquid level of step 3021, the condensed water in drip tray being detected surpasses default the first high liquid level, the second corresponding switch 22 closures, be 0 according to the boot sequence variable, first row water pump 31 is started (accordingly as main drain pump, the boot sequence variable is not 0, execution in step 3022 starts second row water pump 32 as main drain pump);
The liquid level of step 3031, the condensed water in drip tray surpasses the first Preset Time higher than default the first high liquid level, when namely the second switch 22 closures surpass the first Preset Time, startup as the second row water pump 32 of redundant sump pump (accordingly, the boot sequence variable is not 0, execution in step 3032 starts the first row water pump 31 as redundant sump pump);
If step 3041 becomes unlatching as the second row water pump 32 of redundant sump pump by closing, execution in step 3051, otherwise execution in step 3061 (accordingly, the boot sequence variable is not 0, execution in step 3052, otherwise execution in step 3062);
Step 3081, close when the first row water pump 31 as main drain pump is become by unlatching, execution in step 3091 puts 1 with the boot sequence variable, otherwise execution in step 310 (accordingly, execution in step 3092 sets to 0 the boot sequence variable, otherwise execution in step 310);
Said process is a condensed water elimination process, in using actually, control program is set to circular flow step 301～314, during next draining, because the boot sequence variable is 1, second row water pump 32 can start as main drain pump, and first row water pump 31 is as redundant sump pump, such two draining pumps alternately start as main drain pump, and another one is as redundant sump pump.
Also can set up again a switch in the present embodiment, corresponding liquid level is default the second high liquid level, the liquid level that in step 3031, the condition of unlatching redundant sump pump also can be set to condensed water in drip tray like this is higher than default the second high liquid level, and all the other steps are similar.
The condensate drain that the present embodiment provides has utilized chip microcontroller control main drain pump and redundant sump pump pump drainage condensed water, when condensate drain has change, when for example adopting plural draining pump draining, control module and control program are changed a little get final product.The described condensate drain of the present embodiment has solved system's problem out of service that prior art uses single draining pump to cause, improves heating, ventilation or air handling system reliability of operation.
Embodiment four
The embodiment of the present invention provides a kind of condensate drain, as shown in Figure 9, be different from shown in embodiment three, in the present embodiment, condensate drain also comprises, be used for to collect the overflow disk 11 of the condensed water that overflows from drip tray 10, as shown in figure 10, described overflow disk 11 is arranged on a side of described drip tray, with the public sidewall of described drip tray, between described overflow disk and described drip tray, public sidewall 14 is lower than all the other sidewall height of described drip tray and described overflow disk.
The height of the described public sidewall 14 of the present embodiment is the height of default overflow liquid level described in embodiment one, the degree of depth that namely is traditionally arranged to be drip tray be all the other sidewall height deduct gained difference after preset liquid level 80%～90%.The described overflow disk of the present embodiment is used for collecting the condensed water that overflows from drip tray, prevents that the drip tray overflow from affecting the normal operation of system.
Further, be provided with liquid level induction system for detection of condensed water liquid level in described overflow disk in described overflow disk.Described liquid level detection device and described liquid level induction system are switch or liquid level sensor.
For detection of whether overflow occuring, whether there is the liquid level induction system of condensed water also to can be water sensor in overflow disk in the present embodiment.
The control method of the present embodiment and embodiment two are roughly similar, do not repeat them here.
Replaceable as the switch of liquid level detection device in embodiment three and the present embodiment is liquid level sensor, and control method is roughly similar.
The condensate drain that the present embodiment provides has solved system's problem out of service that prior art uses single draining pump to cause, improves heating, ventilation or air handling system reliability of operation.
Embodiment four
The embodiment of the present invention provides a kind of heating, ventilation or air handling system, comprising: the condensate drain of the condensed water that heat exchanger and be used for produces on blowdown exchanger, and described condensate drain comprises:
Be used for collecting the drip tray of the condensed water that produces on heat exchanger;
For detection of the liquid level detection device of condensed water liquid level in described drip tray, be arranged in described drip tray;
Be used for discharging main drain pump and the redundant sump pump of described condensed water, be arranged at described drip tray outside, and be connected with described drip tray by pipeline;
The controller that is connected with described main drain pump, redundant sump pump and described liquid level detection device respectively, described controller comprises:
First opens the unit, is used for, controlling the described main drain pump of unlatching and carrying out draining during higher than default the first high liquid level when the liquid level that condensed water detected;
Second opens the unit, be used for surpassing the first Preset Time when the liquid level that condensed water detected higher than time of default the first high liquid level or when presetting the second high liquid level, control the unlatching redundant sump pump and carry out draining, described default the second high liquid level is higher than described default the first high liquid level.
Described controller also comprises: selected cell, be used for before each pump drainage condensed water, described at least two draining pumps are selected as main drain pump in turn as main drain pump to select one at least two draining pumps, are not selected as the draining pump of main drain pump as redundant sump pump.
Described controller also comprises: closing unit, be used for when the liquid level that condensed water detected during lower than preset liquid level, perhaps when the liquid level that condensed water detected surpasses the second Preset Time lower than the time of presetting the first high liquid level, close described main drain pump and redundant sump pump.
Described condensate drain also comprises: be connected with described controller, be used for sending the warning device of failure alarm signal.
Condensate drain in described system, also comprise: overflow disk that be used for to collect the condensed water that overflows from drip tray, described overflow disk is arranged on a side of described drip tray, with the public sidewall of described drip tray, between described overflow disk and described drip tray, public sidewall is lower than all the other sidewall height of described drip tray and described overflow disk.
Be provided with the liquid level induction system for detection of condensed water liquid level in described overflow disk in described overflow disk.
Described condensate drain also comprises: be used for sending the overflow alarming device of overflow alarm signal when liquid level induction system detects the condensed water of overflow disk.
Described liquid level detection device and described liquid level induction system are switch or liquid level sensor.
The heating that the present embodiment provides, ventilation or air handling system have solved system's problem out of service that prior art uses single draining pump to cause, improve heating, ventilation or air handling system reliability of operation.
Can find out, although the embodiment of the present invention relates to field of heating ventilation air conditioning, application of the present invention should be not limited to this.
Through the above description of the embodiments, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but in a lot of situation, the former is better embodiment.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this software product is stored in the storage medium that can read, floppy disk as computer, hard disk or CD etc., comprise some instructions with so that computer equipment or single-chip microcomputer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection domain with claim.
Claims (20)
1. a condensed water elimination method that is used for heating, ventilation or air handling system, is characterized in that, comprising:
Detect the liquid level of condensed water in drip tray, described drip tray is used for collecting the condensed water that produces on the heat exchanger of heating, ventilation or air handling system;
When the liquid level that condensed water detected during higher than default the first high liquid level, control and open main drain pump and carry out draining;
Surpass the first Preset Time when the liquid level that condensed water detected higher than time of default the first high liquid level or during higher than default the second high liquid level, control and open redundant sump pump and carry out draining, described default the second high liquid level is higher than described default the first high liquid level.
2. method according to claim 1, is characterized in that,
Described main drain pump is a draining pump of selecting in turn before each pump drainage condensed water in described at least two draining pumps, described redundant sump pump is not to be selected as the draining pump of main drain pump at least in described two draining pumps.
3. method according to claim 2, is characterized in that, described method also comprises:
When the liquid level that condensed water detected during lower than preset liquid level, perhaps when the liquid level that condensed water detected surpasses the second Preset Time lower than time of default the first high liquid level, close described main drain pump and redundant sump pump.
4. method according to claim 2, is characterized in that, described method also comprises:
When described main drain pump is opened, and redundant sump pump is when opening, and mark is this time as draining pump of main drain pump;
When the mark number of times that is compared to other draining pumps of redundant sump pump when this mark number of times as the described draining pump of main drain pump exceeded designated value, judgement was this time broken down as described draining pump of main drain pump;
Send the failure alarm signal that this breaks down as the described draining pump of main drain pump.
5. a condensate drain that is used for heating, ventilation or air handling system, is characterized in that, described condensate drain comprises:
Be used for collecting the drip tray of the condensed water that produces on heat exchanger;
For detection of the liquid level detection device of condensed water liquid level in described drip tray, be arranged in described drip tray;
Be used for discharging main drain pump and the redundant sump pump of described condensed water, be arranged at described drip tray outside, and be connected with described drip tray by pipeline;
The controller that is connected with described main drain pump, redundant sump pump and described liquid level detection device respectively, described controller comprises:
First opens the unit, is used for, controlling the described main drain pump of unlatching and carrying out draining during higher than default the first high liquid level when the liquid level that condensed water detected;
Second opens the unit, be used for surpassing the first Preset Time when the liquid level that condensed water detected higher than time of default the first high liquid level or when presetting the second high liquid level, control the unlatching redundant sump pump and carry out draining, described default the second high liquid level is higher than described default the first high liquid level.
6. device according to claim 5, it is characterized in that, described controller also comprises: selected cell, be used for before each pump drainage condensed water, select one as main drain pump at least two draining pumps, described at least two draining pumps are selected as main drain pump in turn, are not selected as the draining pump of main drain pump as redundant sump pump.
7. device according to claim 6, is characterized in that, described controller also comprises:
Closing unit is used for when the liquid level that condensed water detected during lower than preset liquid level, perhaps during over the second Preset Time, closes described main drain pump and redundant sump pump lower than time of default the first high liquid level when the liquid level that condensed water detected.
8. device according to claim 7, is characterized in that, described device also comprises:
Be connected with described controller, be used for sending the warning device of failure alarm signal.
9. device according to claim 8, is characterized in that, described device also comprises:
Be used for to collect the overflow disk of the condensed water that overflows from drip tray, described overflow disk is arranged on a side of described drip tray, with the public sidewall of described drip tray, between described overflow disk and described drip tray, public sidewall is lower than all the other sidewall height of described drip tray and described overflow disk.
10. device according to claim 9, is characterized in that, is provided with the liquid level induction system for detection of condensed water liquid level in described overflow disk in described overflow disk.
11. device according to claim 10 is characterized in that, described device also comprises:
Be used for sending the overflow alarming device of overflow alarm signal when liquid level induction system detects the condensed water of overflow disk.
12. according to claim 5 or 10 described devices is characterized in that, described liquid level detection device and described liquid level induction system are switch or liquid level sensor.
13. a heating, ventilation or air handling system comprise: the condensate drain of the condensed water that heat exchanger and be used for produces on blowdown exchanger, it is characterized in that, described condensate drain comprises:
Be used for collecting the drip tray of the condensed water that produces on heat exchanger;
For detection of the liquid level detection device of condensed water liquid level in described drip tray, be arranged in described drip tray;
Be used for discharging main drain pump and the redundant sump pump of described condensed water, be arranged at described drip tray outside, and be connected with described drip tray by pipeline;
The controller that is connected with described main drain pump, redundant sump pump and described liquid level detection device respectively, described controller comprises:
First opens the unit, is used for, controlling the described main drain pump of unlatching and carrying out draining during higher than default the first high liquid level when the liquid level that condensed water detected;
Second opens the unit, be used for surpassing the first Preset Time when the liquid level that condensed water detected higher than time of default the first high liquid level or when presetting the second high liquid level, control the unlatching redundant sump pump and carry out draining, described default the second high liquid level is higher than described default the first high liquid level.
14. system according to claim 13, it is characterized in that, described controller also comprises: selected cell, be used for before each pump drainage condensed water, select one as main drain pump at least two draining pumps, described at least two draining pumps are selected as main drain pump in turn, are not selected as the draining pump of main drain pump as redundant sump pump.
15. system according to claim 14 is characterized in that, described controller also comprises:
Closing unit is used for when the liquid level that condensed water detected during lower than preset liquid level, perhaps during over the second Preset Time, closes described main drain pump and redundant sump pump lower than time of default the first high liquid level when the liquid level that condensed water detected.
16. system according to claim 15 is characterized in that, described condensate drain also comprises:
Be connected with described controller, be used for sending the warning device of failure alarm signal.
17. system according to claim 16 is characterized in that, described condensate drain also comprises:
Be used for to collect the overflow disk of the condensed water that overflows from drip tray, described overflow disk is arranged on a side of described drip tray, with the public sidewall of described drip tray, between described overflow disk and described drip tray, public sidewall is lower than all the other sidewall height of described drip tray and described overflow disk.
18. system according to claim 17 is characterized in that, is provided with the liquid level induction system for detection of condensed water liquid level in described overflow disk in described overflow disk.
19. system according to claim 17 is characterized in that, described condensate drain also comprises:
Be used for sending the overflow alarming device of overflow alarm signal when liquid level induction system detects the condensed water of overflow disk.
20. according to claim 13 or 18 described systems is characterized in that, described liquid level detection device and described liquid level induction system are switch or liquid level sensor.
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| CN201110348292.4A CN103090460B (en) | 2011-11-07 | 2011-11-07 | For heating, ventilating or the condensed water elimination method and apparatus of air handling system |
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| CN201110348292.4A CN103090460B (en) | 2011-11-07 | 2011-11-07 | For heating, ventilating or the condensed water elimination method and apparatus of air handling system |
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