CN208140202U - Gas flow surveying instrument, air flue and ventilator - Google Patents
Gas flow surveying instrument, air flue and ventilator Download PDFInfo
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- CN208140202U CN208140202U CN201820838250.6U CN201820838250U CN208140202U CN 208140202 U CN208140202 U CN 208140202U CN 201820838250 U CN201820838250 U CN 201820838250U CN 208140202 U CN208140202 U CN 208140202U
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- 238000005259 measurement Methods 0.000 abstract description 14
- 206010037660 Pyrexia Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
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- 238000009529 body temperature measurement Methods 0.000 description 1
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Abstract
The utility model embodiment provides a kind of gas flow surveying instrument, air flue and ventilator, belongs to flow measurement technology field, solves the problems, such as application traffic measurement device higher cost in the prior art.Described device includes：Processing module and it is fixed on intrinsic first temperature measuring unit of air flue, the second temperature measuring unit and heat-generating units, first temperature measuring unit, the second temperature measuring unit and heat-generating units are separately connected the processing module, and first temperature measuring unit is used to measure the temperature of gas in the air flue ontology；Second temperature measuring unit is used to measure the temperature of the heat-generating units；The processing module is used for：The supply voltage of the heat-generating units is controlled, so that the temperature difference between temperature measured by temperature measured by first temperature measuring unit and second temperature measuring unit is preset difference value；And the supply voltage according to the heat-generating units, determine the intrinsic current gas flow of the air flue.The utility model embodiment is suitable for the measurement of gas flow.
Description
Technical field
The utility model relates to flow measurement technology field, more particularly to a kind of gas flow surveying instrument, air flue and
Ventilator.
Background technique
Flow measuring device is generally utilized for gas flow measurement at present, the intrinsic flow of air flue is measured.
Conventionally, as flow measuring device be all it is packaged, access air flue ontology in when, it is necessary to opened on air flue
Logical bypass gas flow can just allow airflow into as shown in Figure 1, forming a vapour lock between the intrinsic air inlet and the outlet of air flue
In the small airway outputed, hence into flow measuring device, air flue is then entered by flow measuring device outflow.
The applicant has found that the above scheme of the prior art has the disadvantage that in the process of implementing the utility model：
It is at high cost using above-mentioned flow measuring device, and mounting structure is complicated.
Utility model content
The purpose of the utility model embodiment is to provide a kind of gas flow surveying instrument, air flue and ventilator, solves
In the prior art the problem of application traffic measurement device higher cost, cost is reduced by the utility model, structure is simple, Yi Shi
It is existing.
To achieve the goals above, the utility model embodiment provides a kind of gas flow surveying instrument, described device packet
It includes：Processing module and intrinsic first temperature measuring unit of air flue, the second temperature measuring unit and heat-generating units are fixed on, described first
Temperature measuring unit, the second temperature measuring unit and heat-generating units are separately connected the processing module, and first temperature measuring unit is for measuring
The temperature of gas in the air flue ontology；Second temperature measuring unit is used to measure the temperature of the heat-generating units；The processing
Module is used to control the supply voltages of the heat-generating units, so that temperature measured by first temperature measuring unit and described the
Temperature difference between temperature measured by two temperature measuring units is preset difference value；And the supply voltage according to the heat-generating units, really
The fixed intrinsic current gas flow of air flue.
Further, the processing module is used to determine the intrinsic current gas stream of the air flue according to following equation
Amount：Fc=(Vc-Vmin) * k, wherein FcFor the intrinsic current gas flow of the air flue, VcFor the current of the heat-generating units
Voltage value, VminThe supply voltage value of the heat-generating units in the case where to flow through in the air flue ontology without gas, k is ratio
Coefficient.
Further, the processing module obtains the proportionality coefficient k by following operation：The gas in the air flue ontology
Body flow is measured by temperature measured by default maximum stream flow and first temperature measuring unit and second temperature measuring unit
When temperature difference between temperature is the preset difference value, the supply voltage value V of the heat-generating units is obtainedmax；According toObtain the proportionality coefficient.
Further, spacing distance is 0.5cm between first temperature measuring unit and second temperature measuring unit.
Further, the setting range of the preset difference value is 10 DEG C~50 DEG C.
Further, the preset difference value and the intrinsic gas flow of the air flue are positively correlated.
Further, first temperature measuring unit and second temperature measuring unit are thermistor.
Further, the heat-generating units are power resistor.
Correspondingly, the utility model embodiment also provides a kind of air flue, including air flue ontology and it is set in air flue ontology
Gas flow surveying instrument as described above, wherein the first temperature measuring unit of the gas flow surveying instrument, the second thermometric
Unit and heat-generating units are fixed in air flue ontology by lead.
Correspondingly, the utility model embodiment also provides a kind of ventilator, the ventilator includes gas described above
Flow measurement device.
Through the above technical solutions, by the supply voltage of processing module control heat-generating units, so that first thermometric
In air flue ontology measured by unit between the temperature of heat-generating units measured by the temperature of gas and second temperature measuring unit
Temperature difference be preset difference value；And the supply voltage according to the heat-generating units, determine the intrinsic current gas of the air flue
Flow.The utility model embodiment solves the problems, such as application traffic measurement device higher cost in the prior art, by this reality
Cost is reduced with novel, structure is simple, easily realizes.
The other feature and advantage of the utility model embodiment will give in the following detailed description section specifically
It is bright.
Detailed description of the invention
Attached drawing is to further understand for providing to the utility model embodiment, and constitute part of specification,
It is used to explain the utility model embodiment together with following specific embodiment, but does not constitute to the utility model embodiment
Limitation.In the accompanying drawings：
Fig. 1 is to utilize the schematic diagram of flow measuring device measurement gas flow in the prior art；
Fig. 2 is a kind of structural schematic diagram of gas flow surveying instrument provided by the embodiment of the utility model；
Fig. 3 is the setting schematic diagram of gas flow surveying instrument provided by the embodiment of the utility model；
Fig. 4 is the flow chart of determining proportionality coefficient provided by the embodiment of the utility model；
Fig. 5 is the flow chart of the measurement intrinsic gas flow of air flue provided by the embodiment of the utility model；
Fig. 6 is the setting signal of heat-generating units, the second temperature measuring unit and processing module provided by the embodiment of the utility model
Figure.
Description of symbols
21 processing module, 22 first temperature measuring unit
23 second temperature measuring unit, 24 heat-generating units
31 air flues
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the utility model embodiment.It should be understood that
It is that specific embodiment described herein is merely to illustrate and explains the utility model embodiment is not limited to this reality
Use new embodiment.
Fig. 2 is a kind of structural schematic diagram of gas flow surveying instrument provided by the embodiment of the utility model.Such as Fig. 2 institute
Show, described device includes：Processing module 21 and it is fixed on intrinsic first temperature measuring unit 22 of air flue, the second temperature measuring unit 23
With heat-generating units 24, first temperature measuring unit 22, the second temperature measuring unit 23 and heat-generating units 24 are separately connected the processing mould
Block 21, first temperature measuring unit 22 are used to measure the temperature of gas in the air flue ontology；Second temperature measuring unit 23 is used
In the temperature for measuring the heat-generating units 24；The processing module 21 is used for：The supply voltage of the heat-generating units 24 is controlled, with
So that the temperature between temperature measured by temperature measured by first temperature measuring unit 22 and second temperature measuring unit 23
Difference is preset difference value；And the supply voltage according to the heat-generating units 24, determine the intrinsic current gas flow of the air flue.
Wherein, as shown in figure 3, the first temperature measuring unit 22, the second temperature measuring unit 23 and heat-generating units 24 in described device
Any position in 31 ontology of air flue can be fixed on by lead, without still further outputing small airway on air flue 31.Its
In, second temperature measuring unit 23 can be close to the heat-generating units 24 and install, convenient for measuring the temperature of the heat-generating units 24.
In addition, being spaced a predetermined distance between first temperature measuring unit and second temperature measuring unit, the preset distance
Guarantee the two as close to the temperature without influencing other side measures, and must not be too far away, and avoids generating cyclone therebetween
The precision of temperature measurement is influenced, for example, the preset distance is 0.5cm.
Wherein, in order to guarantee preferably to measure the intrinsic gas flow of air flue, first temperature measuring unit is needed to be surveyed
Temperature difference between temperature measured by the temperature of amount and second temperature measuring unit is preset difference value, then it is single to control the fever
The supply voltage of member, to change the heat of the heat-generating units, so that temperature measured by first temperature measuring unit
There are temperature differences between temperature measured by second temperature measuring unit.I.e. when there is gas to flow through in the air flue ontology,
In order to guarantee the temperature between temperature measured by temperature measured by first temperature measuring unit and second temperature measuring unit
Difference is the preset difference value, then must increase the heat of the heat-generating units, that is, increase the supply voltage of the heat-generating units, then
According to the supply voltage of the heat-generating units, so that it may determine the intrinsic current gas flow of the air flue.Additionally, it is preferred that,
The setting range of the preset difference value is 10 DEG C~50 DEG C, any one temperature in selectable range is the preset difference value.
Optionally, the preset difference value and the intrinsic gas flow of the air flue are positively correlated, for example, working as the intrinsic gas of the air flue
When body flow is smaller, the preset difference value can be arranged it is smaller, for example, 10 DEG C, when the intrinsic gas of the air flue
When flow is larger, the preset difference value can be arranged it is larger, for example, 50 DEG C, it is preferable that second temperature measuring unit
The minimum temperature of the heat-generating units of measurement is 50 DEG C.
Wherein, the processing module is used to determine the intrinsic current gas flow of the air flue according to following equation：Fc
=(Vc-Vmin) * k, wherein FcFor the intrinsic current gas flow of the air flue, VcFor the current voltage of the heat-generating units
Value, VminThe supply voltage value of the heat-generating units in the case where to flow through in the air flue ontology without gas, k is proportionality coefficient.
Wherein, the processing module obtains the proportionality coefficient k by following operation：The gas stream in the air flue ontology
Amount is temperature measured by temperature measured by default maximum stream flow and first temperature measuring unit and second temperature measuring unit
Between temperature difference be the preset difference value when, obtain the supply voltage value V of the heat-generating unitsmax；According toObtain the proportionality coefficient.Wherein, when flowing through in the air flue ontology without gas, the fever is controlled
The supply voltage of unit, so that temperature measured by temperature measured by first temperature measuring unit and second temperature measuring unit
Temperature difference between degree is the preset difference value, and records the heat-generating units supply voltage value V at this timemin；When the air flue sheet
When flowing through default maximum stream flow in vivo, for example, 200LPM controls the supply voltage of the heat-generating units, so that described first
Temperature difference between temperature measured by temperature measured by temperature measuring unit and second temperature measuring unit is the preset difference value,
And record the heat-generating units supply voltage value V at this timemax, then according to k=(200-0)/(Vmax-Vmin), so that it may it obtains described
Proportionality coefficient k.
For example, as shown in figure 4, the processing module can obtain the proportionality coefficient k by following steps：
Step 401, when flowing through in the air flue ontology without gas, temperature measured by first temperature measuring unit is calculated
With the temperature difference between temperature measured by second temperature measuring unit, and the temperature difference is determined as preset difference value；
Step 402, record heat-generating units supply voltage value V when being flowed through in the air flue ontology without gasmin；
Step 403, it determines and flows through default maximum stream flow F in the air flue ontologymax, and calculate first thermometric at this time
Temperature difference between temperature measured by temperature measured by unit and second temperature measuring unit；
Step 404, the supply voltage of the heat-generating units is controlled, so that temperature measured by first temperature measuring unit
Temperature difference between temperature measured by second temperature measuring unit is the preset difference value, and it is single to record the fever at this time
First supply voltage value Vmax；
Step 405, according to k=(Fmax-0)/(Vmax-Vmin), so that it may obtain the proportionality coefficient k.
When the intrinsic gas flow of the measurement air flue, so that it may single using the proportionality coefficient and the fever
The current voltage value of member, obtains the intrinsic current gas flow of the air flue.
As shown in figure 5, the process for measuring the intrinsic gas flow of the air flue is as follows：
Step 501, temperature measured by temperature measured by first temperature measuring unit and second temperature measuring unit is calculated
Temperature difference between degree；
Step 502, the supply voltage of the heat-generating units is obtained；
Step 503, the supply voltage of the heat-generating units is controlled, so that temperature measured by first temperature measuring unit
Temperature difference between temperature measured by second temperature measuring unit is the preset difference value；
Step 504, temperature measured by temperature and second temperature measuring unit measured by first temperature measuring unit
Between temperature difference be the preset difference value when, record the current voltage value V of the heat-generating unitsc；
Step 505, according to Fc=(Vc-Vmin) * k obtains the intrinsic current gas flow F of the air fluec。
In addition, first temperature measuring unit 22 and second temperature measuring unit 23 can be temperature-sensitive electricity in order to reduce cost
Resistance.
Optionally, the heat-generating units 24 are power resistor.As shown in fig. 6, thermistor 23 is tightly attached to power resistor 24
Setting, and thermistor 23 and power resistor 24 are connect with processing module 21.
The intrinsic gas flow of gas off-take can quickly and easily be measured by the utility model embodiment, and cost compared with
It is low.
Gas flow surveying instrument in the utility model embodiment can be applied to air flue, including air flue ontology and setting
In the intrinsic above-mentioned gas flow surveying instrument of air flue, wherein the first temperature measuring unit of the gas flow surveying instrument,
Second temperature measuring unit and heat-generating units are fixed in air flue ontology by lead.For example, the gas in pipeline in fresh air system
The measurement of flow also can be applied to the measurement of the gas flow in ventilator.
The optional embodiment of the utility model embodiment, still, the utility model is described in detail in conjunction with attached drawing above
Embodiment be not limited to the above embodiment in detail can in the range of the technology design of the utility model embodiment
A variety of simple variants are carried out with the technical solution to the utility model embodiment, these simple variants belong to the utility model reality
Apply the protection scope of example.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the utility model is implemented
No further explanation will be given to various combinations of possible ways for example.
In addition, any combination can also be carried out between a variety of different embodiments of the utility model embodiment, as long as
It equally should be considered as the utility model embodiment disclosure of that without prejudice to the thought of the utility model embodiment.
Claims (10)
1. a kind of gas flow surveying instrument, which is characterized in that described device includes：
Processing module and intrinsic first temperature measuring unit of air flue, the second temperature measuring unit and heat-generating units are fixed on, described
One temperature measuring unit, the second temperature measuring unit and heat-generating units are separately connected the processing module,
First temperature measuring unit is used to measure the temperature of gas in the air flue ontology；
Second temperature measuring unit is used to measure the temperature of the heat-generating units；
The processing module is used to control the supply voltage of the heat-generating units, so that measured by first temperature measuring unit
Temperature difference between temperature measured by temperature and second temperature measuring unit is preset difference value；And
According to the supply voltage of the heat-generating units, the intrinsic current gas flow of the air flue is determined.
2. the apparatus according to claim 1, which is characterized in that the processing module is used for according to following equation determination
The intrinsic current gas flow of air flue：
Fc=(Vc-Vmin) * k,
Wherein, FcFor the intrinsic current gas flow of the air flue, VcFor the current voltage value of the heat-generating units, VminFor institute
The supply voltage value of the heat-generating units in the case where flowing through in air flue ontology without gas is stated, k is proportionality coefficient.
3. the apparatus of claim 2, which is characterized in that the processing module obtains the ratio by following operation
Coefficient k：
Gas flow is temperature and institute measured by default maximum stream flow and first temperature measuring unit in the air flue ontology
When to state temperature difference between temperature measured by the second temperature measuring unit be the preset difference value, the power supply of the heat-generating units is obtained
Voltage value Vmax；
According toObtain the proportionality coefficient.
4. the apparatus according to claim 1, which is characterized in that first temperature measuring unit and second temperature measuring unit it
Between spacing distance be 0.5cm.
5. the apparatus according to claim 1, which is characterized in that the setting range of the preset difference value is 10 DEG C~50 DEG C.
6. the apparatus according to claim 1, which is characterized in that the preset difference value and the intrinsic gas stream of the air flue
Amount is positively correlated.
7. the apparatus according to claim 1, which is characterized in that first temperature measuring unit and second temperature measuring unit are
Thermistor.
8. the apparatus according to claim 1, which is characterized in that the heat-generating units are power resistor.
9. a kind of air flue, which is characterized in that including air flue ontology and be set to intrinsic any one of such as claim 1-8 of air flue
The gas flow surveying instrument, wherein the first temperature measuring unit of the gas flow surveying instrument, the second temperature measuring unit and
Heat-generating units are fixed in the air flue ontology by lead.
10. a kind of ventilator, which is characterized in that the ventilator includes the described in any item gas streams of the claims 1-8
Measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820838250.6U CN208140202U (en) | 2018-05-31 | 2018-05-31 | Gas flow surveying instrument, air flue and ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820838250.6U CN208140202U (en) | 2018-05-31 | 2018-05-31 | Gas flow surveying instrument, air flue and ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208140202U true CN208140202U (en) | 2018-11-23 |
Family
ID=64314652
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820838250.6U Active CN208140202U (en) | 2018-05-31 | 2018-05-31 | Gas flow surveying instrument, air flue and ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208140202U (en) |
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2018
- 2018-05-31 CN CN201820838250.6U patent/CN208140202U/en active Active
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