CN106440926B - A kind of detection method and monitoring system of flow of heat exchange fluid - Google Patents
A kind of detection method and monitoring system of flow of heat exchange fluid Download PDFInfo
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- CN106440926B CN106440926B CN201611076927.9A CN201611076927A CN106440926B CN 106440926 B CN106440926 B CN 106440926B CN 201611076927 A CN201611076927 A CN 201611076927A CN 106440926 B CN106440926 B CN 106440926B
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- heat
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- exchange fluid
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- flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
Abstract
The present invention relates to a kind of detection method of flow of heat exchange fluid and monitoring systems, belong to field of heat exchange.Multiple temperature that the present invention passes through acquisition heat-exchange fluid, compare the temperature of acquisition, judge whether heat-exchange fluid flows, the specific method for acquiring multiple temperature is successively to acquire multiple temperature, or the temperature of the same position different time by acquiring heat-exchange fluid along the direction that flows to of heat-exchange fluid；Temperature-detecting device is established dry contact signal by the relay with normally-closed contact with heat exchange control system and is connected; heat exchange control system and temperature-detecting device independently work; interacting there is no electric signal between the two; it thus can be improved the job stability of whole system; when heat exchanger is not flowed using lateral line hot fluid or heat exchanger is using lateral line fluid temperature (F.T.) overtemperature; trigger relay obtains electrically disconnected; heat exchange control system stops working after receiving cut-off signal, realizes the protection of exchange thermal control system.
Description
Technical field
The invention belongs to field of heat exchange, and in particular to a kind of detection method and monitoring system of flow of heat exchange fluid.
Background technique
In central air conditioner system or heat pump system, need to carry out heat exchange by heat exchanger, the stream for heat exchange
It after body carries out heat exchange in heat exchanger, is conducted by pipeline to the room used, realizes refrigeration or heating.
Heat exchanger is a kind of equipment that heat transfer is realized between two kinds of fluids of different temperatures, and heat is higher by temperature
Fluid passes to the lower fluid of temperature, and fluid temperature (F.T.) is made to reach the index of flow specification, to meet the needs of process conditions.Shell
The heat exchanger of tubular type, bushing type and the types such as board-like includes heat exchanger using lateral line and is set to heat exchanger and uses lateral line
In heat exchanger source pipeline, wherein heat exchanger source pipeline accesses central air-conditioning or heat pump system, the fluid of source pipeline
Flowing and temperature control are controlled by central air conditioner system or heat pump system.Two kinds of different fluids of temperature are separated by wall surface
It flows in space, by the thermally conductive of wall surface, exchanges heat between two kinds of fluids.Heat exchanger is come using the fluid of lateral line
It says, fluid flowing is realized by other dynamical systems, in heat exchange, it is possible that heat exchanger uses the fluid of lateral line
Illiquidity or non-mobility status, but central air conditioner system or heat pump system are still working at this time, and can not be real in heat exchanger
Existing heat exchange, therefore heat exchanger source pipeline fluid temperature can rise always or decline always, it is possible that temperature is excessively high
Or the problem that freezes, and then heat exchanger is damaged, or even damage central air conditioner system or heat pump system.
In this regard, the prior art provides the monitoring scheme that some heat exchangers are flowed using lateral line fluid.Currently, HVAC industry
Middle water flow detection method has target stream switch detection method, pressure differential detection method and ultrasonic Detection Method.The advantages of they respectively have oneself, together
When also have many deficiencies.
Target stream switch detection method is that setting target stream switchs in the pipeline that connection heat exchanger uses lateral line, when heat exchanger makes
When being flowed with the fluid in lateral line, fluid can wash target stream mechanical switch open, trigger the signal being arranged on target stream mechanical switch
Switch conduction, to know that fluid is flowing.But target stream mechanical switch needs to concatenate in the duct, and installation is more complex, to water flow
Larger resistance is generated, the resistance of (such as ND25 and following pipeline) more can not be ignored especially in small-caliber pipeline, additionally, due to
The variation of working environment humidity and temperature, causes mechanical switch stuck in a certain position at the deficiencies of be easy to causeing mechanical switch to corrode
It sets and cannot achieve water flowing detection.
Pressure differential detection method is that liquid column pressure is arranged by importing and exporting position using the pipeline of lateral line in connection heat exchanger
Meter, such as U-tube manometer import and export the variation of position pressure difference and judge whether fluid is flowing when flowing by contrast fluid.But it is lacked
Point is to be also easy to produce detection error when detecting and blocking inside heat exchanger, and in winter under low temperature environment, seal in Liquid Column Manometer
The water deposited can cause to damage because of icing.
Liquid interface is encountered using ultrasonic wave can generate to reflect to form be reflected into the super of echo principle detection fluid flowing
Sonic sensor, but its use cost is high, and the space for installing needs is larger.
Summary of the invention
In view of this, it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of flow of heat exchange fluid
Detection method and monitoring system utilize the flowing of the temperature change monitoring fluid of heat-exchange fluid.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of detection method of flow of heat exchange fluid acquires multiple temperature of heat-exchange fluid, compares the temperature of acquisition,
Judge whether the heat-exchange fluid flows；
Wherein, the method for acquiring multiple temperature of the heat-exchange fluid includes flowing to direction along the heat-exchange fluid
Successively acquire multiple temperature.
Further, three temperature, respectively heat-exchange fluid are successively acquired along the direction that flows to of the heat-exchange fluid
Entry position temperature Tin, heat-exchange fluid middle position temperature TmidWith heat-exchange fluid outlet port temperature Tout；
Work as Tin、Tmid、ToutBetween relationship meet Tin> Tmid> ToutAnd Tin< Tmid< ToutEither condition among the two
When, the heat-exchange fluid is flowing.
Further, as | Tin-ToutWhen | >=T1, wherein T1 is the insufficient alarm threshold value of the flow of heat exchange fluid,
The heat-exchange fluid is flowing, but insufficient flow.
Further, work as Tmid> TinAnd Tmid> Tout, or work as Tmid< TinAnd Tmid< ToutWhen,
If | Tin-Tmid| >=T2 and | Tout-Tmid| >=T2, wherein T2 is the warning level that the heat-exchange fluid does not flow
Value, the heat-exchange fluid do not flow.
Further, the method for acquiring multiple temperature of the heat-exchange fluid further includes acquiring the heat-exchange fluid
The temperature of same position different time sets the time interval Δ t of temperature collection, and Δ t acquires the heat exchange at timed intervals
The temperature of the same position of fluid: T1、T2…Tn-1、Tn, wherein n >=2；
Pass through formula K=| (Tn-Tn-1)/Δ t |, obtain the temperature change slope K of time interval Δ t；
The slope threshold value K1 when flow of heat exchange fluid is set,
If K >=K1, the heat-exchange fluid does not flow；
If K < K1, the heat-exchange fluid are flowing.
A kind of monitoring system of flow of heat exchange fluid, the monitoring system of the flow of heat exchange fluid utilize described above
The detection method of flow of heat exchange fluid, including heat exchanger, temperature-detecting device and heat exchange control system,
The temperature-detecting device includes at least one temperature sensor, A/D conversion module, processor module, relay
And power module；Wherein, the power module is used to provide the described the operating voltage of temperature-detecting device；The temperature sensor
It is connected to the A/D conversion module, the A/D conversion module is connected to the processor module；The relay has normally closed
Contact, the coil-end of the relay are connect with the processor module, and the normally-closed contact of the relay is changed with described respectively
Thermal control system connection；
The heat exchanger includes heat exchanger using lateral line and is set to the heat exchanger and uses the heat exchange in lateral line
Device source pipeline, the temperature sensor are set to the heat exchanger and use on lateral line.
Further, the heat exchange control system is central air conditioning system or control system for heat pump, the heat exchange
Device is any one of coil exchanger, shell and tube exchanger, double pipe heat exchanger and plate heat exchanger.
Further, the temperature sensor quantity is three, is set in turn in the heat exchanger entering using lateral line
Mouth position, the heat exchanger use the outlet port of lateral line using the middle position of lateral line and the heat exchanger.
Further, the temperature sensor quantity is one, is set to the interposition that the heat exchanger uses lateral line
It sets.
Further, the temperature-detecting device further includes indicator light, buzzer and display screen, the indicator light, described
Buzzer and the display screen are respectively connected to the processor module.
The invention adopts the above technical scheme, at least have it is following the utility model has the advantages that
For the present invention by multiple temperature of acquisition heat-exchange fluid, the specific method for acquiring multiple temperature is along heat exchange flow
The direction that flows to of body successively acquires multiple temperature, or the temperature of the same position different time by acquiring heat-exchange fluid, right
Than the temperature of acquisition, judge whether heat-exchange fluid flows, can also judge whether flow of heat exchange fluid is insufficient；According to upper
The detection method for stating flow of heat exchange fluid, the present invention also provides a kind of monitoring system of flow of heat exchange fluid, the monitoring systems
Temperature-detecting device is established dry contact signal by the relay with normally-closed contact with heat exchange control system and is connected in system, exchanges heat
Control system and temperature-detecting device independently work, between the two interacting there is no electric signal, it is thus possible to improve
The job stability of whole system, when heat exchanger is not flowed or heat exchanger is using lateral line fluid temperature (F.T.) using lateral line hot fluid
When overtemperature, trigger relay obtain it is electrically disconnected, heat exchange control system receive cut-off signal after stop working, realize exchange thermal control
The protection of system.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is fluid heat exchange schematic diagram of the present invention；
Fig. 2 is the meter of temperature change slope K under refrigeration mode in a kind of detection method of flow of heat exchange fluid of the present invention
Calculate method schematic diagram；
Fig. 3 is the meter of temperature change slope K under heating mode in a kind of detection method of flow of heat exchange fluid of the present invention
Calculate method schematic diagram；
Fig. 4 is a kind of flow of heat exchange fluid monitoring system embodiment schematic diagram of the present invention；
Fig. 5 is a kind of operation principle schematic diagram of flow of heat exchange fluid monitoring system of the present invention.
1- heat exchanger in figure；2- temperature-detecting device；3- heat exchange control system；101- heat exchanger uses lateral line；101a-
Heat exchanger uses lateral line entrance；101b- heat exchanger uses side pipe way outlet；102- heat exchanger source pipeline；102a- heat exchanger
Source line entry；102b- heat exchanger source tube outlet；201- temperature sensor；202-A/D conversion module；203- processing
Device module；204- relay；205- power module；206- indicator light；207- buzzer；208- display screen.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
As shown in FIG. 1, FIG. 1 is heat-exchange fluid heat exchange schematic diagram, the present invention provides a kind of flow of heat exchange fluid
Detection method acquires multiple temperature of heat-exchange fluid, compares the temperature of acquisition, judges whether the heat-exchange fluid flows.
It is found that carrying out heat exchange during flow of heat exchange fluid, such heat-exchange fluid flows to temperature everywhere in direction
Or the temperature of the different time of heat-exchange fluid same position can change, and flow to direction by comparison heat-exchange fluid
The temperature of the different time of temperature or heat-exchange fluid same position everywhere, it can be determined that whether heat-exchange fluid flows.
According to above scheme, the present invention provides a kind of preferred embodiment, specifically: direction is flowed to along the heat-exchange fluid
Multiple temperature are successively acquired, the temperature of acquisition is compared, judge whether the heat-exchange fluid flows.
Through the above scheme, multiple temperature are successively acquired along the direction that flows to of the heat-exchange fluid, such as temperature at acquisition two
Degree, temperature acquisition point are separately positioned on the entry position and outlet port of the heat-exchange fluid, may also be arranged on heat exchange flow
Position at two specifically need to be only equipped with certain distance when setting by body other positions.
Certainly more than two temperature can also be acquired along the direction that flows to of the heat-exchange fluid, the temperature at same adjacent two
It spends acquisition position and is equipped with certain distance.
From the aspect of obtaining more preferable detection effect, the temperature acquisition point of setting is The more the better, but needs from cost and reality
From the aspect of wanting, the fewer the temperature acquisition point of setting the better, and when two temperature acquisition points are only arranged, being such as set to heat exchanger makes
With the entry position and outlet port of lateral line, when heat exchanger uses the fluid proper flow of lateral line, entry position and outlet
The temperature of position is different, and may determine that heat exchanger is being flowed using lateral line fluid in this way, but when heat exchanger uses side
When pipeline fluid flowing is reduced to a certain extent, although heat exchanger uses the temperature of lateral line entry position and outlet port still
It is different, but because the residence time in heat exchanger is too long using the fluid in lateral line for heat exchanger, heat exchanger is caused to use side
The temperature in pipeline middle position can be significantly hotter than or use lower than heat exchanger the temperature at lateral line both ends, can damage heat exchanger in this way
With heat exchange control system, such case is also undesirable in actual use.
In order to overcome above-mentioned shortcoming, the present invention provides a kind of preferred embodiment to solve the above problems, specifically: along institute
The direction that flows to for stating heat-exchange fluid successively acquires three temperature, respectively heat exchange fluid inlet position temperature Tin, heat exchange
Fluid middle position temperature TmidWith heat-exchange fluid outlet port temperature Tout；
Work as Tin、Tmid、ToutBetween relationship meet Tin> Tmid> ToutAnd Tin< Tmid< ToutEither condition among the two
When, the heat-exchange fluid is flowing.
Through the above scheme it is found that heat-exchange fluid carries out heat exchange, in heating, heat-exchange fluid flows to direction temperature
It is to gradually rise, corresponding is Tin< Tmid< Tout；When refrigeration, it is to gradually decrease that heat-exchange fluid, which flows to direction temperature, corresponding
Be Tin> Tmid> Tout。
For above scheme, the difference using heat exchange fluid inlet temperature and outlet temperature is judged, but its difference
It is not to be the bigger the better, when the difference of heat exchange fluid inlet temperature and outlet temperature reaches a certain level, shows heat exchange
The insufficient flow of fluid, heat-exchange fluid residence time in heat exchanger is too long, provides a kind of preferred detection to this present invention
Scheme, when | Tin-ToutWhen | >=T1, the heat-exchange fluid is flowing, but insufficient flow, wherein T1 is the heat-exchange fluid
The alarm threshold value of insufficient flow can issue respectively sound-light alarm by buzzer and LED light to this.With this solution, if
Determine the insufficient alarm threshold value of flow of heat exchange fluid, alarm threshold value is such as set as 10 DEG C, when heat exchange fluid inlet temperature and goes out
When the absolute difference of mouth temperature is more than or equal to 10 DEG C, determine that flow of heat exchange fluid is insufficient.The specific alarm that the present invention provides
Threshold value is an applicating example, and in actual application, the specific setting value of alarm threshold value may simultaneously non-present invention provide
Example value, the insufficient optimal alarm threshold value of flow of heat exchange fluid should be set as the case may be.
For above scheme, when flow of heat exchange fluid, which continues, to be reduced, although it is possible that heat-exchange fluid enters
Although the temperature of mouthful position and outlet port still has certain difference, heat-exchange fluid residence time in heat exchanger is too long,
Heat exchange state is being carried out always, causes the temperature in heat-exchange fluid middle position can be significantly hotter than or lower than heat-exchange fluid two
The temperature at end, for this problem, the present invention provides preferred detection scheme, specifically: in Tmid> TinAnd Tmid> Tout, or
Work as Tmid< TinAnd Tmid< ToutWhen, if | Tin-Tmid| >=T2 and | Tout-Tmid| >=T2, wherein T2 is the heat exchange flow
Body does not flow alarm threshold value, and the heat-exchange fluid does not flow, can issue respectively acousto-optic by buzzer and LED light to this
Alarm.With this solution, the alarm threshold value that setting heat-exchange fluid does not flow, such as 3 DEG C.It is intermediate when freezing or heating state
When the temperature of position is more than or equal to 3 DEG C with the absolute difference of end positions respectively, determine that heat-exchange fluid does not flow.Work as Tmid
>=T3 or TmidWhen≤T4, relay normally closed contact is disconnected, and sending system is out of service after heat exchange control system receives this information
Heat-exchange apparatus is protected in instruction；Wherein, T3 is the heat exchange high temperature protection threshold value, and T4 is the heat exchange low-temperature protection threshold
Value.
For multiple temperature of acquisition heat-exchange fluid provided by the invention, the temperature of acquisition is compared, judges that the heat is handed over
Change of current body whether mobility program, the present invention also provides another detection scheme, specifically: acquire the same of the heat-exchange fluid
The temperature of position different time sets the time interval Δ t of temperature collection, and Δ t acquires the heat-exchange fluid at timed intervals
Same position temperature: T1、T2…Tn-1、Tn, wherein n >=2 pass through formula K=| (Tn-Tn-1)/Δ t | obtain time interval
The temperature change slope of Δ t, as shown in Figures 2 and 3；
The when slope threshold value K1 of flow of heat exchange fluid is set,
If K >=K1, the heat-exchange fluid does not flow；
If K < K1, the heat-exchange fluid are flowing.
The program in actual application, the temperature of the different time in preferential collection heat-exchange fluid middle position.
According to the detection method of the above various flow of heat exchange fluid, the present invention provides a kind of prison of flow of heat exchange fluid
Control system, as shown in Figure 1, Figure 4 and Figure 5, the monitoring system include heat exchanger 1, temperature-detecting device 2, heat exchange control system
3,
Wherein,
The temperature-detecting device 2 includes at least one temperature sensor 201, A/D conversion module 202, processor module
203, relay 204 and power module 205；Wherein, the power module 205 is used to provide the described the work of temperature-detecting device 2
Make voltage；The temperature sensor 201 is connected to the A/D conversion module 202, and the A/D conversion module 202 is connected to described
Processor module 203；The relay 204 has normally-closed contact, the coil-end of the relay 204 and the processor module
203 connections, the normally-closed contact of the relay 204 are connect with the heat exchange control system 3 respectively；
The heat exchanger 1 includes heat exchanger using lateral line 101 and is set to the heat exchanger using in lateral line 101
Heat exchanger source pipeline 102, the temperature sensor 201 is set to the heat exchanger using on lateral line 101.
In the monitoring system of above-mentioned flow of heat exchange fluid, the heat exchange control system 3 is the central air-conditioning of the prior art
Control system or control system for heat pump, the heat exchanger 1 include that heat exchanger using lateral line 101 and is set to the heat exchange
The coiled, shell-tube type, set of the prior art can be selected using the heat exchanger source pipeline 102 in lateral line, the heat exchanger 1 in device
The heat exchanger of tubular type and the types such as board-like comprising heat exchanger uses side pipe way outlet using lateral line entrance 101a, heat exchanger
101b, heat exchanger source line entry 102a and heat exchanger source tube outlet 102b.
Setting for the temperature sensor 201, preferably three, be set in turn in the heat exchanger uses side pipe
The road position entrance 101a, the heat exchanger 1 using lateral line outlet port 101b and the heat exchanger using in lateral line
Between position.In addition, a temperature sensor can also be used only in the present invention, setting position is preferably provided at the heat exchanger and uses
The middle position of lateral line.
From the aspect of obtaining more preferable detection effect, the temperature sensor 201 of setting is The more the better, but from cost and
From the aspect of actual needs, the fewer the temperature sensor 201 of setting the better, and two temperature sensors are only being arranged
When 201, the heat exchanger as described in being set to uses the entry position and outlet port of lateral line 101, and the heat exchanger uses side pipe
When the fluid proper flow on road 101, the temperature of entry position and outlet port is different, and may determine that the heat exchange in this way
Device is being flowed using 101 fluid of lateral line.But when the heat exchanger is reduced to a certain extent using the flowing of 101 fluid of lateral line
When, although the heat exchanger is still different using the temperature of 101 entry position of lateral line and outlet port, because of heat exchange
The insufficient flow of fluid, heat-exchange fluid residence time in heat exchanger is too long, and heat exchanger is caused to use 101 interposition of lateral line
The temperature set can be significantly hotter than or use lower than heat exchanger the temperature at 101 both ends of lateral line, can damage heat exchanger and heat exchange in this way
Control system, such case are undesirable in actual use.
Through the above scheme, the present invention is arranged by the temperature sensor 201 uses lateral line in the heat exchanger 1
On, the advantages of this setup is that the temperature sensor is not directly contacted with heat-exchange fluid, not by heat exchange flow body temperature
The influence that degree changes, corrodes, and have the advantages that low cost, while temperature sensor is directly installed on heat exchanger and uses lateral line
Tube wall on, thus have the advantages that easy for installation.
Temperature signal can be obtained by the temperature sensor 201 in the present invention, pass through 202 turns of the A/D conversion module
The processor module 203 is sent to after changing, the processor module 203 is preferably single-chip microcontroller, the comparison knot between temperature data
Fruit can be obtained by the logical operation of single-chip microcontroller, and then realized and given 204 coil of relay offer switching signal, described in control
The open or close of the normally-closed contact of relay 204, when the heat exchanger using fluid heat exchange is normally carried out in lateral line when,
The normally-closed contact of the relay 204 is closed state, and the heat exchange control system 3 obtains Continuity signal, the heat exchange control
System 3 works normally；When the heat exchanger is not flowed using fluid in lateral line or when heat exchange temperature overtemperature, the processor
Module 203 issues trigger signal to the relay 204, and 204 coil of relay obtains electric so that the relay 204 is normally closed
Contact disconnects, and the heat exchange control system 3 obtains cut-off signal, stops working, and the heat exchange control system 3 realizes that self is protected
Shield.
Monitoring system of the invention is realizing that monitoring the heat exchanger uses by way of temperature sensor temperature collection
In lateral line 101 while flow of heat exchange fluid situation, it can also be achieved the monitoring heat exchanger and handed over using heat in lateral line 101
The function of change of current temperature, the interposition that the heat exchanger uses lateral line 101 is arranged in temperature sensor 201 as will be described
It sets, anti-frost protection alarming value when setting is freezed, when the temperature of the temperature sensor 201 detection is lower than the anti-frost protection temperature set
When spending, the heat exchange control system 3 stops working after the cut-off signal for obtaining the relay 204；It is heated when setting heating
Overtemperature alarm value, when the temperature of the temperature sensor 201 detection is higher than the heating overtemperature alarm value of setting, the heat exchange control
System 3 processed stops working after the cut-off signal for obtaining the relay 204, can be achieved in this way to the heat exchange control system 3
The protection of itself.
In addition, heretofore described heat exchange control system 3 and the temperature-detecting device 2 pass through the relay 204
On-off establishes connection, and when normal work, the relay 204 for normally-closed contact provided dry contact signal, the heat exchange control described in this way
System 3 and the temperature-detecting device 2 independently work, between the two interacting there is no electric signal, it is thus possible to mention
The job stability of high whole system.
The temperature-detecting device 2 only detect heating overtemperature alarm value, refrigeration when anti-frost protection alarming value when or
When the heat exchanger is not flowed using the fluid of lateral line, just triggering disconnects the signal of 204 normally-closed contact of relay, institute
State heat exchange control system 3 receive the 204 normally-closed contact cut-off signal of relay after, stop working, the heat exchange control system 3
Realize self-protection.
As shown in figure 5, improvement project as one preferred, the temperature-detecting device 2 further includes indicator light 206, institute
It states indicator light 206 and is connected to the processor module 203, the various situations that can be detected in this way to the present invention make warning note,
Especially detect that the heat exchanger uses the situation of fluid mobility deficiency in lateral line 101, in this case, the relay
Device 204 is still normally off, thus the heat exchange control system 3 is to work normally, and such situation can pass through the processing
Device module 203 controls the indicator light 206 and issues alarm signal.
As shown in figure 5, the present invention also provides another audible alarm prompt means, the temperature-detecting device 2 further includes
Buzzer 207, the buzzer 207 are connected to the processor module 203.
As shown in figure 5, understanding the heat exchanger in order to facilitate people scene uses the temperature sensing on lateral line 101
Device 201 detects temperature, and the temperature-detecting device 2 further includes display screen 208, and the display screen 208 is connected to the processing
Device module 208, the temperature display that the temperature sensor 201 can be detected in this way in display screen 208, can be intuitive antipyretic friendship
Change situation.
Temperature sensor is arranged on lateral line by using in heat exchanger in the present invention, realizes to using side pipe in heat exchanger
The flowing monitoring of fluid in road, high-temperature protection and temperature low-temperature protection, heat exchanger can be with using the fluid in lateral line
For liquid, such as water, or gas.The prior art is compared using target stream switch detection method, pressure differential detection method and ultrasonic wave
The device that detection method uses, when heat exchanger is gas using the fluid in lateral line, the various detections dress of the above-mentioned prior art
It sets, is unable to the flowing of detection gas fluid.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (5)
1. a kind of detection method of flow of heat exchange fluid, it is characterised in that: acquire multiple temperature of heat-exchange fluid, comparison is adopted
The temperature of collection, judges whether the heat-exchange fluid flows；
Wherein, the method for acquiring multiple temperature of the heat-exchange fluid includes flowing to direction successively along the heat-exchange fluid
Acquire multiple temperature；
The direction that flows to along the heat-exchange fluid successively acquires three temperature, respectively heat exchange fluid inlet position temperature
Tin, heat-exchange fluid middle position temperature TmidWith heat-exchange fluid outlet port temperature Tout；
Work as Tin、Tmid、ToutBetween relationship meet Tin> Tmid> ToutAnd Tin< Tmid< ToutWhen either condition among the two,
The heat-exchange fluid is flowing；
Work as Tmid> TinAnd Tmid> Tout, or work as Tmid< TinAnd Tmid< ToutWhen,
If | Tin-Tmid| >=T2 and | Tout-Tmid| >=T2, wherein T2 is the alarm threshold value that the heat-exchange fluid does not flow, institute
Heat-exchange fluid is stated not flow.
2. the detection method of flow of heat exchange fluid according to claim 1, it is characterised in that:
When | Tin-ToutWhen | >=T1, wherein T1 is the insufficient alarm threshold value of the flow of heat exchange fluid, the heat-exchange fluid
It is flowing, but insufficient flow.
3. a kind of monitoring system of flow of heat exchange fluid, it is characterised in that: the monitoring system utilizes 2 institute of claims 1 or 2
State the detection method of flow of heat exchange fluid, the monitoring system includes heat exchanger, temperature-detecting device and heat exchange control system,
The temperature-detecting device includes at least one temperature sensor, A/D conversion module, processor module, relay and electricity
Source module；Wherein, the power module is used to provide the described the operating voltage of temperature-detecting device；The temperature sensor connection
To the A/D conversion module, the A/D conversion module is connected to the processor module；The relay has normally-closed contact,
The coil-end of the relay is connect with the processor module, and the normally-closed contact of the relay is controlled with the heat exchange respectively
System connection；
The heat exchanger includes heat exchanger using lateral line and is set to the heat exchanger and uses the heat exchanger source in lateral line
Lateral line, the temperature sensor are set to the heat exchanger and use on lateral line.
4. monitoring system according to claim 3, it is characterised in that: the heat exchange control system is central air-conditioning control system
System or control system for heat pump, the heat exchanger are coil exchanger, shell and tube exchanger, double pipe heat exchanger and board-like change
Any one of hot device.
5. monitoring system according to claim 3, it is characterised in that: the temperature-detecting device further includes indicator light, bee
Ring device and display screen, the indicator light, the buzzer and the display screen are respectively connected to the processor module.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292534A (en) * | 2013-05-30 | 2013-09-11 | 四川长虹电器股份有限公司 | Device and method for detecting flow rates of refrigerants |
| CN103361950A (en) * | 2012-03-30 | 2013-10-23 | 三星电子株式会社 | Clothing dryer and blockage detection method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2004036170A1 (en) * | 2002-10-15 | 2004-04-29 | Danfoss A/S | A method and a device for detecting an abnormality of a heat exchanger, and the use of such a device |
| KR101180207B1 (en) * | 2006-09-01 | 2012-09-10 | 엘지전자 주식회사 | Water Cooling Type Air Conditioner |
| CN104764146A (en) * | 2015-03-23 | 2015-07-08 | 广东美的暖通设备有限公司 | Control method, device and system for achieving water-side heat exchanger freeze-proofing protection |
| CN204612279U (en) * | 2015-04-27 | 2015-09-02 | 青岛海尔空调电子有限公司 | For warning device and the fouling auto-alarming heat exchanger of fouling of heat exchangers |
| CN105953483B (en) * | 2016-04-25 | 2018-11-20 | 广东美的暖通设备有限公司 | The abatement detecting method of multi-line system and its indoor unit restricting element |
| CN105954052B (en) * | 2016-05-27 | 2018-04-20 | 珠海格力电器股份有限公司 | A kind of capillary clogging detecting system and method |
| CN206258016U (en) * | 2016-11-29 | 2017-06-16 | 郭琦 | A kind of monitoring system of flow of heat exchange fluid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361950A (en) * | 2012-03-30 | 2013-10-23 | 三星电子株式会社 | Clothing dryer and blockage detection method thereof |
| CN103292534A (en) * | 2013-05-30 | 2013-09-11 | 四川长虹电器股份有限公司 | Device and method for detecting flow rates of refrigerants |
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