CN208504772U - Concentration detection apparatus, concentration measurement and control device and solar water heater - Google Patents
Concentration detection apparatus, concentration measurement and control device and solar water heater Download PDFInfo
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- CN208504772U CN208504772U CN201820763526.9U CN201820763526U CN208504772U CN 208504772 U CN208504772 U CN 208504772U CN 201820763526 U CN201820763526 U CN 201820763526U CN 208504772 U CN208504772 U CN 208504772U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The utility model discloses a kind of concentration detection apparatus, concentration measurement and control device and solar water heater.The concentration detection apparatus includes: capacitance detector, suitable for being immersed in the heat transferring medium in solar water heater, for detecting the capacitance C in the heat transferring medium11；Dielectric constant computing unit, according to the capacitance C detected11Calculate the relative dielectric constant ε of the heat transferring medium in solar water heaterr；Temperature sensor is arranged in the heat transferring medium in solar water heater, for detecting the temperature of the heat transferring medium in the solar water heater；With concentration calculation unit, according to calculated relative dielectric constant εrWith the concentration of the antifreeze in the temperature computation heat transferring medium that detects.Therefore, in the present invention, the concentration of the antifreeze in heat transferring medium can be monitored online, exceed preset range to prevent the concentration of the antifreeze in heat transferring medium.
Description
Technical field
The utility model relates to a kind of for detecting the concentration of the antifreeze in the heat transferring medium in solar water heater
Concentration detection apparatus and concentration measurement and control device and solar water heater including the concentration detection apparatus.
Background technique
For the solar water heater with heat-exchanger rig, the heat transferring medium in heat-exchanger rig usually all has stronger anti-
Jelly ability, to prevent the heat transferring medium in heat-exchanger rig from frost solidification occur in winter, therefore, this heat transferring medium is usually claimed
For anti frozen liquid, common anti frozen liquid is glycol water or aqueous solution of propylene glycol.It is freeze proof in anti frozen liquid in normal use
The concentration of agent (ethylene glycol or propylene glycol) should be within zone of reasonableness, for example, within the scope of 30V%~60V%.If
The freezing tolerance of lower limit value lower than zone of reasonableness or the upper limit value higher than zone of reasonableness, anti frozen liquid will decline, it is easy to go out
Now frost solidification.In use, it due to leakage, volatilizees, the loss such as aging causes the variation of freeze proof liquid measure and the change of concentration
Change.If adding or replacing anti frozen liquid not in time, it is possible to cause the concentration of the antifreeze in anti frozen liquid beyond zone of reasonableness, this meeting
Anti frozen liquid is caused to be easy occur frost solidification at low temperature, the pipeline so as to cause heat-exchanger rig is blocked or explosion.
Occurs the problem in order to prevent, in the prior art, it is generally required that be sampled analysis to anti frozen liquid, and according to taking
Sample result adds new anti frozen liquid or reconciles concentration.Meanwhile when solar water heater is initially installed, need to confirm anti frozen liquid
Concentration.Since solar water heater is mounted on roof, need manually to sample up, daily maintenance is inconvenient.
Utility model content
The purpose of this utility model aims to solve the problem that at least one aspect of the above-mentioned problems in the prior art and defect.
One aspect according to the present utility model provides a kind of concentration detection apparatus, is used for on-line checking solar water
The concentration of the antifreeze in heat transferring medium in device, the concentration detection apparatus includes: capacitance detector, suitable for being immersed in the sun
In heat transferring medium in energy water heater, for detecting the capacitance C in the heat transferring medium11；Dielectric constant computing unit, root
The capacitance C detected according to the capacitance detector11The opposite dielectric for calculating the heat transferring medium in the solar water heater is normal
Number εr；Temperature sensor is arranged in the heat transferring medium in the solar water heater, for detecting the solar water heater
The temperature of interior heat transferring medium；It is normal according to the calculated opposite dielectric of the dielectric constant computing unit with concentration calculation unit
Number εrThe concentration of antifreeze in heat transferring medium described in the temperature computation detected with the temperature sensor.
The embodiment of an exemplary according to the present utility model, heat transferring medium in the solar water heater it is opposite
Permittivity εrIt is calculated according to following formula (1):
Wherein
C10The capacitance detected when for the capacitance detector (100) in a vacuum.
The embodiment of another exemplary according to the present utility model, in the heat transferring medium in the solar water heater
The concentration C of antifreeze is calculated according to following formula (2):
εr=k1C2+k2C+k3(2),
Wherein, k1、k2、k3It is three coefficients relevant to the temperature of heat transferring medium, when the temperature of heat transferring medium determines,
k1、k2、k3It is three constants.
The embodiment of another exemplary according to the present utility model, the concentration detection apparatus further include display unit,
The display unit and the concentration calculation unit communication, for showing calculated concentration.
The embodiment of another exemplary according to the present utility model, the capacitance detector include: a pair of of parallel-plate electricity
Pole, suitable in the heat transferring medium that is immersed in the solar water heater, including first electrode plate parallel to each other and the second electricity
Pole plate；And capacitive detection circuit, it is electrically connected, is adapted to detect between the pair of parallel-plate electrode with the pair of parallel-plate electrode
Capacitance.
The embodiment of another exemplary according to the present utility model, the capacitance detector further include a shell, institute
It states capacitive detection circuit to be encapsulated in the shell, the pair of parallel-plate electrode is located at the outside of the shell.
The embodiment of another exemplary according to the present utility model, the capacitance detector include: a pair of of tubular electrode,
Suitable in the heat transferring medium that is immersed in the solar water heater, including external tubular electrode and it is concentrically disposed at outer barrel
Inside cylindrical electrode in shape electrode；And capacitive detection circuit, it is electrically connected with the pair of tubular electrode, is adapted to detect for described one
To the capacitance between tubular electrode.
The embodiment of another exemplary according to the present utility model, the capacitance detector further include a shell, institute
It states capacitive detection circuit to be encapsulated in the shell, the pair of tubular electrode is located at the outside of the shell.
The embodiment of another exemplary according to the present utility model, the temperature sensor are encapsulated in the capacitor inspection
It surveys in the shell of device.
Other side according to the present utility model provides a kind of concentration measurement and control device, comprising: concentration detection apparatus is used
The concentration of antifreeze in the heat transferring medium in on-line checking solar water heater；Concentration judging unit, for judging detection
Whether the concentration arrived is within preset range.
Other side according to the present utility model provides a kind of solar water heater, comprising: water tank, for accommodating
Water；And heat-exchanger rig, including the heat collector of outside and the heat exchanger being arranged in the water tank is arranged in, the heat collector
Outlet is connected by pipeline with the entrance of the heat exchanger, and the outlet of the heat exchanger passes through the entrance of pipeline and the heat collector
It is connected, to constitute a closed circulation loop, heat transferring medium, the solar water is filled in the circulation loop
Device further includes concentration detection apparatus, and the concentration detection apparatus is in the heat transferring medium in on-line checking solar water heater
The concentration of antifreeze.
The embodiment of an exemplary according to the present utility model, the heat transferring medium in the solar water heater are second two
Alcohol solution, aqueous solution of propylene glycol or glycerin solution.
The embodiment of another exemplary according to the present utility model, the solar water heater further include: concentration judgement
Unit, for judging the concentration detected whether within preset range；With concentration alarm unit, it is used to judge in the concentration
Unit sounds an alarm when determining the concentration detected beyond the preset range.
The embodiment of another exemplary according to the present utility model, when the heat transferring medium in the solar water heater is
When glycol water, the reasonable concentration of the heat transferring medium in the solar water heater is within 30V%~60V%.
The embodiment of another exemplary according to the present utility model, the capacitance detector and temperature of the concentration detection apparatus
Degree sensor is encapsulated in the pipeline of the circulation loop for cycle heat exchange medium of the solar water heater.
The embodiment of another exemplary according to the present utility model, the heat collector is flat plate collector, described to change
Hot device is coiling tube type heat exchangers.
The embodiment of another exemplary according to the present utility model, the solar water heater further includes pump, for pumping
The heat transferring medium is sent, so that the heat transferring medium circulates in the circulation loop.
The embodiment of another exemplary according to the present utility model, the water tank have inlet and outlet, institute
The lower part that water inlet is located at the water tank is stated, the water outlet is located at the top of the water tank.
The embodiment of another exemplary according to the present utility model, the solar water heater further include antifreeze supplement
Device, the antifreeze supplementary device are lower than scheduled dense suitable for the concentration of the antifreeze detected in the concentration detection apparatus
Antifreeze automatically is supplemented into the heat-exchanger rig when spending lower limit value, so that the concentration of the antifreeze in the heat-exchanger rig is extensive
It answers within concentration range reasonable.
The embodiment of another exemplary according to the present utility model, the antifreeze supplementary device includes: container, storage
There is antifreeze；Connecting line, by the reservoir to the heat-exchanger rig；First electrically-controlled valve is mounted on the connecting line
On, it is used to open or closes the connecting line；And controller, suitable for the antifreeze detected according to the concentration detection apparatus
Concentration control the opening and closing of first electrically-controlled valve.When the concentration for the antifreeze that the concentration detection apparatus detects is low
When scheduled concentration limit value, the controller controls first electrically-controlled valve and opens, and control first electrically-controlled valve to
The antifreeze of predetermined amount is supplemented in the heat-exchanger rig.
The embodiment of another exemplary according to the present utility model, the controller is by controlling first electrically-controlled valve
Opening time control the amount of the antifreeze supplemented into the heat-exchanger rig.
The embodiment of another exemplary according to the present utility model, the solar water heater further include water replanishing device,
The water replanishing device is suitable for when the concentration for the antifreeze that the concentration detection apparatus detects is higher than scheduled upper limit of concentration value
Automatically supplement tap water into the heat-exchanger rig so that the concentration of the antifreeze in the heat-exchanger rig be restored to rationally it is dense
It spends within range.
The embodiment of another exemplary according to the present utility model, the water replanishing device include: water pipe, will be described
Heat-exchanger rig is connected to water supply；Second electrically-controlled valve is mounted on the water pipe, is used to open or closes the moisturizing
Pipeline；And controller, the concentration suitable for the antifreeze detected according to the concentration detection apparatus control second electrically-controlled valve
Opening and closing；When the concentration for the antifreeze that the concentration detection apparatus detects is higher than scheduled upper limit of concentration value, institute
It states controller and controls the second electrically-controlled valve opening, and control second electrically-controlled valve and supplement predetermined amount into the heat-exchanger rig
Tap water.
The embodiment of another exemplary according to the present utility model, the controller is by controlling second electrically-controlled valve
Opening time control the amount of the tap water supplemented into the heat-exchanger rig.
In the embodiment of the aforementioned each exemplary of the utility model, Concentration Testing dress is provided on solar water heater
It sets, so as to the concentration of the antifreeze in the heat transferring medium in on-line checking solar water heater, so as to be monitored online
The concentration of antifreeze in heat transferring medium exceeds preset range to prevent the concentration of the antifreeze in heat transferring medium.
It is described by below with reference to attached drawing to made by the utility model, the other objects and advantages of the utility model will
It is clear that can simultaneously help to be fully understood by the utility model.
Detailed description of the invention
Fig. 1 shows the schematic diagram of the solar water heater of the embodiment of an exemplary according to the present utility model；
Fig. 2 shows the schematic diagram of the capacitance detector of first embodiment according to the present utility model；
Fig. 3 shows that a pair of of parallel-plate electrode of capacitance detector shown in Fig. 2 is immersed in the heat exchange in solar water heater
Schematic diagram in medium；
Fig. 4 shows the schematic diagram of the capacitance detector of second embodiment according to the present utility model；
Fig. 5 shows that the heat exchange that a pair of of tubular electrode of capacitance detector shown in Fig. 4 is immersed in solar water heater is situated between
Schematic diagram in matter；
Fig. 6 is shown between the concentration of antifreeze and the relative dielectric constant of heat transferring medium and temperature in heat transferring medium
Relationship.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.?
In specification, the same or similar drawing reference numeral indicates the same or similar component.It is following real to the utility model referring to attached drawing
The explanation for applying mode is intended to explain the overall utility model design of the utility model, and is not construed as practical to this
A kind of novel limitation.
In addition, in the following detailed description, to elaborate many concrete details to provide to present disclosure convenient for explaining
The comprehensive understanding of embodiment.It should be apparent, however, that one or more embodiments without these specific details can also be with
It is carried out.In other cases, well known construction and device is diagrammatically embodied to simplify attached drawing.
General technical design according to the present utility model, provides a kind of concentration detection apparatus, too for on-line checking
The concentration of the antifreeze in heat transferring medium in positive energy water heater, the concentration detection apparatus includes: capacitance detector, is suitable for leaching
In heat transferring medium not in solar water heater, for detecting the capacitance C in the heat transferring medium11；Dielectric constant meter
Calculate unit, the capacitance C detected according to the capacitance detector11Calculate the phase of the heat transferring medium in the solar water heater
To permittivity εr；Temperature sensor is arranged in the heat transferring medium in the solar water heater, for detecting the sun
The temperature of heat transferring medium in energy water heater；With concentration calculation unit, according to the calculated phase of dielectric constant computing unit
To permittivity εrThe concentration of antifreeze in heat transferring medium described in the temperature computation detected with the temperature sensor.
Another general technical design according to the present utility model, provides a kind of concentration measurement and control device, comprising: Concentration Testing
Device, the concentration for the antifreeze in the heat transferring medium in on-line checking solar water heater；Concentration judging unit, for sentencing
Whether the disconnected concentration detected is within preset range；With concentration alarm unit, it is used to determine to examine in the concentration judging unit
The concentration measured sounds an alarm when exceeding the preset range.
Another general technical design according to the present utility model, provides a kind of solar water heater, comprising: water tank,
For accommodating water；And heat-exchanger rig, it is described including the heat exchanger that the heat collector of outside is arranged in and is arranged in the water tank
The outlet of heat collector is connected by pipeline with the entrance of the heat exchanger, and the outlet of the heat exchanger passes through pipeline and the thermal-arrest
The entrance of device is connected, to constitute a closed circulation loop, is filled with heat transferring medium in the circulation loop, it is described too
Positive energy water heater further includes concentration detection apparatus, and the concentration detection apparatus is for the heat exchange in on-line checking solar water heater
The concentration of antifreeze in medium.
Fig. 1 shows the schematic diagram of the solar water heater of the embodiment of an exemplary according to the present utility model.
As shown in Figure 1, in the illustrated embodiment, which specifically includes that water tank 200 and heat exchange dress
It sets.Water tank 200 is for accommodating water.Heat-exchanger rig includes that external heat collector 110 is arranged in and is arranged in water tank 200
Heat exchanger 120.The outlet of heat collector 110 is connected by pipeline with the entrance of heat exchanger 120, and the outlet of heat exchanger 120 passes through pipe
Road is connected with the entrance of heat collector 110, to constitute a closed circulation loop, is situated between in circulation loop filled with heat exchange
Matter.The heat transferring medium heated by heat collector 110 flows into heat exchanger 120, and passes through the water in heat exchanger 120 and water tank 200
Heat exchange is carried out, to heat the water in water tank 200.Heat transferring medium in water tank 200 water carry out heat exchange after,
It again flows into heat collector 110 and is heated by heat collector 110.
Fig. 2 shows the schematic diagram of the capacitance detector 10 of first embodiment according to the present utility model；Fig. 3 shows Fig. 2 institute
Showing in the heat transferring medium 101 that a pair of of parallel-plate electrode 11,12 of the capacitance detector 10 shown is immersed in solar water heater
It is intended to.
As shown in Figure 1 to Figure 3, in the illustrated embodiment, which further includes concentration detection apparatus, this is dense
Spend concentration of the detection device for the antifreeze in the heat transferring medium 101 in on-line checking solar water heater.
As shown in Figure 1 to Figure 3, in the illustrated embodiment, the concentration detection apparatus specifically include that capacitance detector 10,
Dielectric constant computing unit (not shown), temperature sensor (not shown) and concentration calculation unit.
As shown in Figure 1 to Figure 3, in the illustrated embodiment, capacitance detector 10 is suitable for being immersed in solar water heater
Heat transferring medium 101 in, for detecting the capacitance C in heat transferring medium 10111.Dielectric constant computing unit is examined according to capacitor
Survey the capacitance C that device 10 detects11Calculate the relative dielectric constant ε of the heat transferring medium 101 in solar water heaterr.Temperature passes
Sensor is arranged in the heat transferring medium 101 in solar water heater, for detecting the heat transferring medium 101 in solar water heater
Temperature.Concentration calculation unit is according to the calculated relative dielectric constant ε of dielectric constant computing unitrIt is detected with temperature sensor
Temperature computation heat transferring medium 101 in antifreeze concentration.
In the embodiment of an exemplary of the utility model, heat transferring medium 101 in solar water heater it is opposite
Permittivity εrIt can be calculated according to following formula (1):
Wherein
C10The capacitance detected when for capacitance detector 100 in a vacuum.
In the embodiment of an exemplary of the utility model, afore mentioned concentration detection device further includes display unit, should
Display unit and concentration calculation unit communication, for showing calculated concentration.
As shown in Figures 2 and 3, in the illustrated embodiment, which includes a pair of of parallel-plate electrode 11,12
With capacitive detection circuit (not shown).A pair of of parallel-plate electrode 11,12 is suitable for the heat transferring medium being immersed in solar water heater
In 101, including first electrode plate 11 and second electrode plate 1 parallel to each other.Capacitive detection circuit and a pair of of parallel-plate electrode 11,
12 electrical connections, the capacitance C being adapted to detect between a pair of of parallel-plate electrode 11,1211。
As shown in Figures 2 and 3, in the illustrated embodiment, capacitance detector 10 further includes a shell 13, aforementioned capacitor
Detection circuit is encapsulated in shell 13, and a pair of of parallel-plate electrode 11,12 is located at the outside of shell 13.Therefore, work as capacitance detecting
When device 10 is immersed in the heat transferring medium 101 in solar water heater, as shown in figure 3, between a pair of of parallel-plate electrode 11,12
Full of heat transferring medium 101.
Fig. 4 shows the schematic diagram of the capacitance detector 10 ' of second embodiment according to the present utility model；Fig. 5 shows Fig. 4 institute
Showing in the heat transferring medium 101 that a pair of of tubular electrode 11 ', 12 ' of the capacitance detector 10 ' shown is immersed in solar water heater
It is intended to.
As shown in Figure 4 and Figure 5, in the illustrated embodiment, the capacitance detector 10 ' include a pair of of tubular electrode 11 ',
12 ' and capacitive detection circuit (not shown).The heat exchange that a pair of of tubular electrode 11 ', 12 ' is suitable for being immersed in solar water heater is situated between
In matter 101, including the external inside cylindrical electrode 12 ' tubular electrode 11 ' and be concentrically disposed in external tubular electrode 11 '.
Capacitive detection circuit is electrically connected with a pair of of tubular electrode 11 ', 12 ', the capacitor being adapted to detect between a pair of of tubular electrode 11 ', 12 '
Value C11。
As shown in Figure 4 and Figure 5, in the illustrated embodiment, capacitance detector 10 ' further includes a shell 13 ', aforementioned electricity
Hold detection circuit to be encapsulated in shell 13 ', a pair of of tubular electrode 11 ', 12 ' is located at the outside of shell 13 '.Therefore, work as capacitor
When detector 10 ' is immersed in the heat transferring medium 101 in solar water heater, as shown in figure 5, a pair of of tubular electrode 11 ',
Heat transferring medium 101 is full of between 12 '.
In the embodiment of an exemplary of the utility model, aforementioned temperature sensor can directly be encapsulated in capacitor
In the shell 13 of detector 10.But the utility model is not limited to the embodiment of diagram, aforementioned temperature sensor can also be single
Solely it is arranged in the heat transferring medium 101 in solar water heater.
Fig. 6 is shown between the concentration of antifreeze and the relative dielectric constant of heat transferring medium and temperature in heat transferring medium
Relationship.
As shown in fig. 6, in the illustrated embodiment, the heat transferring medium in solar water heater is glycol water, this
When, the reasonable concentration of the heat transferring medium in solar water heater is within 30V%~60V%.That is, changing in solar water heater
The concentration of thermal medium should be within the scope of 30V%~60V%, if exceeding the range, for example, in solar water heater
For the concentration of heat transferring medium lower than 30V% or when being higher than 60V%, the concentration measurement and control device being mounted on solar water heater can be timely
Alarm.
As shown in fig. 6, in the illustrated embodiment, when one timing of temperature of the heat transferring medium in solar water heater, second
There are a quadratic functions between the relative dielectric constant of two alcohol solutions (heat transferring medium) and the concentration of ethylene glycol (antifreeze)
Relationship.Relationship between the two can indicate that (C indicates the concentration of the antifreeze in heat transferring medium, ε with following formula (2)rTable
Show the relative dielectric constant of heat transferring medium):
εr=k1C2+k2C+k3(2),
Wherein, k1、k2、k3It is three coefficients relevant to the temperature of heat transferring medium, when the temperature of heat transferring medium determines,
k1、k2、k3It is three constants.
In relation curve shown in Fig. 6, it can be seen that with the increase of the concentration of ethylene glycol, the phase of glycol water
To permittivity εrAlso correspondingly rise.Therefore, as the relative dielectric constant ε for detecting glycol waterrIt is water-soluble with ethylene glycol
When the temperature of liquid, so that it may calculate corresponding glycol concentration C according to the curve that Fig. 6 is shown.
The utility model is not limited in previous embodiment, and the heat transferring medium in solar water heater is in addition to that can be second two
Alcohol solution can also be other suitable anti frozen liquids, for example, aqueous solution of propylene glycol or glycerin solution.
In the embodiment of an exemplary of the utility model, solar water heater further include: concentration judging unit is used
In the concentration that judgement detects whether within preset range (aforementioned zone of reasonableness)；With concentration alarm unit, it is used in concentration
Judging unit sounds an alarm when determining the concentration detected beyond preset range.
In the embodiment of an exemplary of the utility model, the capacitance detector and temperature sensing of concentration detection apparatus
Device is encapsulated in the pipeline of the circulation loop for cycle heat exchange medium of solar water heater.
In the embodiment of an exemplary of the utility model, as shown in Figure 1, heat collector 110 is flat plate collector,
Heat exchanger 120 is coiling tube type heat exchangers.
In the embodiment of an exemplary of the utility model, as shown in Figure 1, solar water heater further includes pump 130,
For pumping heat transferring medium, so that heat transferring medium circulates in circulation loop.
In the embodiment of an exemplary of the utility model, as shown in Figure 1, water tank 200 has 210 He of water inlet
Water outlet 220, water inlet 210 are located at the lower part of water tank 200, and water outlet 220 is located at the top of water tank 200.
As shown in Figure 1, in the illustrated embodiment, solar water heater further include antifreeze supplementary device 300,310,
320, antifreeze supplementary device 300,310,320 is lower than scheduled suitable for the concentration of the antifreeze detected in concentration detection apparatus
Antifreeze is automatically supplemented into heat-exchanger rig when concentration limit value, so that the concentration of the antifreeze in heat-exchanger rig is restored to conjunction
It manages within concentration range.
As shown in Figure 1, in the illustrated embodiment, antifreeze supplementary device 300,310,320 specifically includes that container 300,
It is stored with antifreeze；Container 300 is connected to heat-exchanger rig by connecting line 310；First electrically-controlled valve 320, is mounted on connecting line
On 310, connecting line 310 is used to open or closed；And controller, suitable for the antifreeze that is detected according to concentration detection apparatus
Concentration controls the opening and closing of the first electrically-controlled valve 320.
As shown in Figure 1, in the illustrated embodiment, when the concentration for the antifreeze that concentration detection apparatus detects is lower than predetermined
Concentration limit value when, controller control the first electrically-controlled valve 320 open, and control the first electrically-controlled valve 320 mended into heat-exchanger rig
Fill the antifreeze of predetermined amount.
As shown in Figure 1, in the illustrated embodiment, controller is controlled by controlling the opening time of the first electrically-controlled valve 320
Make the amount of the antifreeze supplemented into heat-exchanger rig.
As shown in Figure 1, in the illustrated embodiment, solar water heater further includes water replanishing device 410,420, water replanishing device
410,420 are suitable for when the concentration for the antifreeze that concentration detection apparatus detects is higher than scheduled upper limit of concentration value automatically to changing
Tap water is supplemented in thermal, so that the concentration of the antifreeze in heat-exchanger rig is restored within concentration range reasonable.
As shown in Figure 1, in the illustrated embodiment, water replanishing device 410,420 specifically includes that water pipe 410, will exchange heat
Device is connected to water supply；Second electrically-controlled valve 420, is mounted on water pipe 410, is used to open or closes water pipe
410；And controller, the opening of the second electrically-controlled valve 420 is controlled suitable for the concentration of the antifreeze detected according to concentration detection apparatus
And closing.
As shown in Figure 1, in the illustrated embodiment, making a reservation for when the concentration for the antifreeze that concentration detection apparatus detects is higher than
Upper limit of concentration value when, controller control the second electrically-controlled valve 420 open, and control the second electrically-controlled valve 420 mended into heat-exchanger rig
Fill the tap water of predetermined amount.
As shown in Figure 1, in the illustrated embodiment, controller is controlled by controlling the opening time of the second electrically-controlled valve 420
Make the amount of the tap water supplemented into heat-exchanger rig.
In the embodiment of another exemplary of the utility model, a kind of concentration measurement and control device, concentration prison are also disclosed
Controlling device includes: concentration detection apparatus, for the dense of the antifreeze in the heat transferring medium 101 in on-line checking solar water heater
Degree；Concentration judging unit, for judging the concentration detected whether within preset range；With concentration alarm unit, it is used for
Concentration judging unit sounds an alarm when determining the concentration detected beyond preset range.
It will be understood to those skilled in the art that embodiment described above is all exemplary, and this field
Technical staff can make improvements, the rushing in terms of not recurring structure or principle of structure described in various embodiments
It can be freely combined in the case where prominent.
Although the utility model is illustrated in conjunction with attached drawing, embodiment disclosed in attached drawing is intended to practical to this
Novel preferred embodiment illustrates, and should not be understood as a kind of limitation to the utility model.
Although some embodiments of this totality utility model design have been shown and have illustrated, those of ordinary skill in the art will
Understand, in the case where the principle and spirit conceived without departing substantially from this totality utility model, these embodiments can be made a change, this
The range of utility model is limited with claim and their equivalent.
It should be noted that word " comprising " is not excluded for other element or steps, word "a" or "an" is not excluded for multiple.Separately
Outside, any element label of claim should not be construed as limitation the scope of the utility model.
Claims (24)
1. a kind of concentration detection apparatus, for the antifreeze in the heat transferring medium (101) in on-line checking solar water heater
Concentration, the concentration detection apparatus include:
Capacitance detector (10), suitable for being changed for detecting described in the heat transferring medium (101) that is immersed in solar water heater
Capacitance C in thermal medium (101)11；
Dielectric constant computing unit, the capacitance C detected according to the capacitance detector (10)11Calculate the solar water
The relative dielectric constant ε of heat transferring medium (101) in devicer；
Temperature sensor is arranged in the heat transferring medium in the solar water heater (101), for detecting the solar heat
The temperature of heat transferring medium (101) in hydrophone；With
Concentration calculation unit, according to the calculated relative dielectric constant ε of the dielectric constant computing unitrWith the temperature sensing
The concentration of antifreeze in heat transferring medium described in the temperature computation that device detects (101).
2. concentration detection apparatus according to claim 1, it is characterised in that:
The relative dielectric constant ε of heat transferring medium (101) in the solar water heaterrIt is calculated according to following formula (1):
Wherein
C10The capacitance detected when for the capacitance detector (100) in a vacuum.
3. concentration detection apparatus according to claim 1, it is characterised in that:
The concentration C of the antifreeze in heat transferring medium (101) in the solar water heater is calculated according to following formula (2):
εr=k1C2+k2C+k3(2),
Wherein, k1、k2、k3It is three coefficients relevant to the temperature of heat transferring medium, when the temperature of heat transferring medium determines, k1、k2、
k3It is three constants.
4. concentration detection apparatus according to claim 1, it is characterised in that:
The concentration detection apparatus further includes display unit, the display unit and the concentration calculation unit communication, for showing
Show calculated concentration.
5. concentration detection apparatus according to claim 1, which is characterized in that the capacitance detector (10) includes:
A pair of of parallel-plate electrode (11,12), suitable in the heat transferring medium (101) that is immersed in the solar water heater, including
First electrode plate (11) and second electrode plate (12) parallel to each other；With
Capacitive detection circuit is electrically connected with the pair of parallel-plate electrode (11,12), is adapted to detect for the pair of parallel-plate electrode
Capacitance between (11,12).
6. concentration detection apparatus according to claim 5, it is characterised in that:
The capacitance detector (10) further includes a shell (13), and the capacitive detection circuit is encapsulated in the shell (13)
In, the pair of parallel-plate electrode (11,12) is located at the outside of the shell (13).
7. concentration detection apparatus according to claim 1, which is characterized in that the capacitance detector (10 ') includes:
A pair of of tubular electrode (11 ', 12 '), suitable in the heat transferring medium (101) that is immersed in the solar water heater, including
External tubular electrode (11 ') and the inside cylindrical electrode (12 ') being concentrically disposed in external tubular electrode (11 ')；With
Capacitive detection circuit is electrically connected with the pair of tubular electrode (11 ', 12 '), is adapted to detect for the pair of tubular electrode
Capacitance between (11 ', 12 ').
8. concentration detection apparatus according to claim 7, it is characterised in that:
The capacitance detector (10 ') further includes a shell (13 '), and the capacitive detection circuit is encapsulated in the shell
In (13 '), the pair of tubular electrode (11 ', 12 ') is located at the outside of the shell (13 ').
9. the concentration detection apparatus according to claim 5 or 7, it is characterised in that: the temperature sensor is encapsulated in institute
It states in the shell (13) of capacitance detector (10).
10. a kind of concentration measurement and control device characterized by comprising
Concentration detection apparatus, the concentration for the antifreeze in the heat transferring medium (101) in on-line checking solar water heater；
Concentration judging unit, for judging the concentration detected whether within preset range；With
Concentration alarm unit, for the sending when the concentration judging unit determines the concentration detected beyond the preset range
Alarm,
The concentration detection apparatus is concentration detection apparatus of any of claims 1-9.
11. a kind of solar water heater, comprising:
Water tank (200), for accommodating water；With
Heat-exchanger rig, including the heat exchanger of external heat collector (110) and setting in the water tank (200) is arranged in
(120),
The outlet of the heat collector (110) is connected by pipeline with the entrance of the heat exchanger (120), the heat exchanger (120)
Outlet be connected with the entrance of the heat collector (110) by pipeline, so that one closed circulation loop of composition, is followed described
Heat transferring medium is filled in loop back path,
It is characterized by:
The solar water heater further includes concentration detection apparatus, and the concentration detection apparatus is used for on-line checking solar water
The concentration of the antifreeze in heat transferring medium in device,
The concentration detection apparatus is concentration detection apparatus of any of claims 1-9.
12. solar water heater according to claim 11, it is characterised in that:
Heat transferring medium in the solar water heater is glycol water, aqueous solution of propylene glycol or glycerin solution.
13. solar water heater according to claim 12, which is characterized in that the solar water heater further include:
Concentration judging unit, for judging the concentration detected whether within preset range；With
Concentration alarm unit, for the sending when the concentration judging unit determines the concentration detected beyond the preset range
Alarm.
14. solar water heater according to claim 13, it is characterised in that:
When the heat transferring medium in the solar water heater is glycol water, the heat exchange in the solar water heater is situated between
The reasonable concentration of matter is within 30V%~60V%.
15. solar water heater according to claim 11, it is characterised in that:
The capacitance detector and temperature sensor of the concentration detection apparatus be encapsulated in the solar water heater for following
In the pipeline of the circulation loop of ring heat transferring medium.
16. solar water heater according to claim 11, it is characterised in that:
The heat collector (110) is flat plate collector, and the heat exchanger (120) is coiling tube type heat exchangers.
17. solar water heater according to claim 11, it is characterised in that:
The solar water heater further includes pump (130), for pumping the heat transferring medium, so that the heat transferring medium is described
It is circulated in circulation loop.
18. solar water heater according to claim 11, it is characterised in that:
The water tank (200) has water inlet (210) and water outlet (220), and the water inlet (210) is located at the water tank
(200) lower part, the water outlet (220) are located at the top of the water tank (200).
19. solar water heater according to claim 11, it is characterised in that:
The solar water heater further includes antifreeze supplementary device (300,310,320), the antifreeze supplementary device (300,
310,320) it is suitable for automatic when the concentration for the antifreeze that the concentration detection apparatus detects is lower than scheduled concentration limit value
Ground supplements antifreeze into the heat-exchanger rig, so that the concentration of the antifreeze in the heat-exchanger rig is restored to reasonable concentration model
Within enclosing.
20. solar water heater according to claim 19, which is characterized in that the antifreeze supplementary device (300,
310,320) include:
Container (300), is stored with antifreeze；
The container (300) is connected to the heat-exchanger rig by connecting line (310)；
First electrically-controlled valve (320) is mounted on the connecting line (310), is used to open or closes the connecting line
(310)；With
Controller, the concentration suitable for the antifreeze detected according to the concentration detection apparatus control first electrically-controlled valve
(320) opening and closing,
When the concentration for the antifreeze that the concentration detection apparatus detects is lower than scheduled concentration limit value, the controller control
It makes first electrically-controlled valve (320) to open, and controls first electrically-controlled valve (320) and supplement predetermined amount into the heat-exchanger rig
Antifreeze.
21. solar water heater according to claim 20, it is characterised in that:
The controller is supplemented to control into the heat-exchanger rig by controlling the opening time of first electrically-controlled valve (320)
Antifreeze amount.
22. solar water heater according to claim 11, it is characterised in that:
The solar water heater further includes water replanishing device (410,420), and the water replanishing device (410,420) is suitable for described dense
The concentration for the antifreeze that degree detection device detects automatically is mended into the heat-exchanger rig when being higher than scheduled upper limit of concentration value
Tap water is filled, so that the concentration of the antifreeze in the heat-exchanger rig is restored within concentration range reasonable.
23. solar water heater according to claim 22, which is characterized in that the water replanishing device (410,420) includes:
The heat-exchanger rig is connected to water supply by water pipe (410)；
Second electrically-controlled valve (420) is mounted on the water pipe (410), is used to open or closes the water pipe
(410)；With
Controller, the concentration suitable for the antifreeze detected according to the concentration detection apparatus control second electrically-controlled valve
(420) opening and closing,
When the concentration for the antifreeze that the concentration detection apparatus detects is higher than scheduled upper limit of concentration value, the controller control
It makes second electrically-controlled valve (420) to open, and controls second electrically-controlled valve (420) and supplement predetermined amount into the heat-exchanger rig
Tap water.
24. solar water heater according to claim 23, it is characterised in that:
The controller is supplemented to control into the heat-exchanger rig by controlling the opening time of second electrically-controlled valve (420)
Tap water amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820763526.9U CN208504772U (en) | 2018-05-22 | 2018-05-22 | Concentration detection apparatus, concentration measurement and control device and solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820763526.9U CN208504772U (en) | 2018-05-22 | 2018-05-22 | Concentration detection apparatus, concentration measurement and control device and solar water heater |
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| Publication Number | Publication Date |
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| CN208504772U true CN208504772U (en) | 2019-02-15 |
Family
ID=65292986
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| CN201820763526.9U Active CN208504772U (en) | 2018-05-22 | 2018-05-22 | Concentration detection apparatus, concentration measurement and control device and solar water heater |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514701A (en) * | 2018-05-22 | 2019-11-29 | 泰科电子(上海)有限公司 | Concentration detection apparatus, concentration measurement and control device and solar water heater |
| EP3783275A1 (en) * | 2019-08-21 | 2021-02-24 | Grundfos Holding A/S | Pump system |
| CN115218498A (en) * | 2022-07-27 | 2022-10-21 | 中国科学院电工研究所 | Heat collector test system using molten salt as heat transfer medium |
| CN117368275A (en) * | 2023-12-07 | 2024-01-09 | 江苏食品药品职业技术学院 | Alcohol concentration full-range measurement method, system and device |
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2018
- 2018-05-22 CN CN201820763526.9U patent/CN208504772U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514701A (en) * | 2018-05-22 | 2019-11-29 | 泰科电子(上海)有限公司 | Concentration detection apparatus, concentration measurement and control device and solar water heater |
| EP3783275A1 (en) * | 2019-08-21 | 2021-02-24 | Grundfos Holding A/S | Pump system |
| CN112415089A (en) * | 2019-08-21 | 2021-02-26 | 格兰富控股联合股份公司 | Pump system |
| CN112415089B (en) * | 2019-08-21 | 2024-05-14 | 格兰富控股联合股份公司 | Pump system |
| US12085287B2 (en) | 2019-08-21 | 2024-09-10 | Grundfos Holding A/S | Pump system |
| CN115218498A (en) * | 2022-07-27 | 2022-10-21 | 中国科学院电工研究所 | Heat collector test system using molten salt as heat transfer medium |
| CN117368275A (en) * | 2023-12-07 | 2024-01-09 | 江苏食品药品职业技术学院 | Alcohol concentration full-range measurement method, system and device |
| CN117368275B (en) * | 2023-12-07 | 2024-03-08 | 江苏食品药品职业技术学院 | Alcohol concentration full-range measurement method, system and device |
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