CN108800300A - The automatic device and method for reducing large space indoor heating temperature gradient - Google Patents
The automatic device and method for reducing large space indoor heating temperature gradient Download PDFInfo
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- CN108800300A CN108800300A CN201810360064.0A CN201810360064A CN108800300A CN 108800300 A CN108800300 A CN 108800300A CN 201810360064 A CN201810360064 A CN 201810360064A CN 108800300 A CN108800300 A CN 108800300A
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- large space
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1084—Arrangement or mounting of control or safety devices for air heating systems
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- Thermal Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to the automatic device and method thereof for reducing large space indoor heating temperature gradient, the equipment includes columnar noise elimination shell, noise elimination shell upper is round air inlet, and lower part is electronic swirl diffuser, and inside is followed successively by just medium effeciency filter, wind turbine and current equalizer from top to bottom；The equipment also includes temperature sensor, and the acquisition of temperature sensor cut-in temperature calculates and signal transmitting device, is interconnected by frequency converter and wind turbine.Lower part working region of the present invention the heat conveying for being deposited in top non-active area, the increased heating energy consumption of building enclosure caused by temperature gradient increase can effectively be reduced, also it is notable that the increased heating energy consumption of Air Infiltration, energy-saving effect caused by large space vertical temperature gradient increase can effectively be reduced.
Description
Technical field
The present invention relates to a kind of heating and ventilation equipment, and in particular to a kind of automatic reduction large space indoor heating temperature ladder
The device and method of degree
Background technology
In recent years, the increasingly raising with people to indoor environment demand with the development of economy, the industrial factory of cold district
Room and large space heating demand also increasingly increase.The heating system of common industrial premises or large space has common radiator
Heating, radiant heating and hot-air heating, wherein most commonly seen in the form of heating terminal based on radiator.
During the heating of industrial premises and large space, due to the floating of hot-air, hot-air can be caused tall and big
The upper area in space is accumulated, and just because of this accumulation, large space can be caused to generate prodigious temperature ladder along short transverse
Degree is shown in that Fig. 1, Fig. 2 are vertical temperature distribution (temperature gradient) figure at certain moment under certain on-site actual situations.
According to formula：
Q=KF (t-tw) (1)
The heat output of Q-building enclosure；
K-is heat transfer coefficient；
F-is heat transfer area；
t-tw- indoor/outdoor temperature-difference, t are the temperature of certain indoor point, twFor outdoor temperature.
The presence of such temperature gradient can cause the building enclosure energy consumption on large space top to substantially increase；
According to formula：
Δ P=(ρw-ρ)gΔh (2)
Certain point and outdoor hot pressing are poor in the rooms Δ P-；
(ρw- ρ)-indoor certain point and outdoor air density contrast, ρ be the atmospheric density of certain indoor point, ρwIt is close for outdoor air
Degree；
G- acceleration of gravity；
The height difference of Δ h- air inlets and air outlet.
The presence of such temperature gradient will also result in substantially increasing for hot pressing.Since large-space clean factory building building enclosure is close
Closing property is poor, and there are a large amount of gaps and openings, according to formula：
Δ P=1/2 ε ρwv2 (3)
Certain point and outdoor hot pressing are poor in the rooms Δ P-；
ρwIt is outdoor air density；
ε-gap coefficient of partial resistance；
V- enters the wind wind speed.
The increase of hot pressing can cause the increase of gap intake velocity, and then can cause the increase of Air Infiltration load, cause
Building energy consumption further increases.Low-temp radiation heating should not be in the industrial premises that surface state is complicated and load is larger, mesh
The characteristics of preceding general hot-air heating mode is difficult to be sent to working region there are hot wind, and also the same temperature gradient is big, high energy consumption.
Industrial premises or large space roofing are built by steel construction and insulation roof boarding of light, daytime in winter
Due to the effect of solar radiation, large space top can be made, which to obtain a large amount of solar radiation, keeps temperature further up, also into one
The temperature gradient of step aggravation vertical direction, and to night due to the presence of night sky cold emission, the temperature gradient of vertical direction can subtract
It is weak, see Fig. 3, this figure is certain industrial premises scene actual test figure.
Invention content
The object of the present invention is to provide a kind of device and method of automatic reduction large space indoor heating temperature gradient, roots
According to existing industrial premises and large space winter radiator heating indoor temperature gradient feature, installed in large space headspace
This equipment, combined radiating device heating system use, and can effectively reduce large space vertical temperature gradient caused by hot-air floating
The increased heating energy consumption of building enclosure caused by increase also can be reduced effectively caused by large space vertical temperature gradient increase
The increased heating energy consumption of Air Infiltration.
The technical solution adopted in the present invention is：
The automatic equipment for reducing large space indoor heating temperature gradient, it is characterised in that：
The equipment includes columnar noise elimination shell, and noise elimination shell upper is round air inlet, and lower part is electronic Whirl deposite tank
Mouthful, inside is followed successively by just medium effeciency filter, wind turbine and current equalizer from top to bottom；
The equipment also includes temperature sensor, and the acquisition of temperature sensor cut-in temperature calculates and signal transmitting device, leads to
Frequency converter is crossed to interconnect with wind turbine.
It is the tapered mouth of half hyperbolic type above the electronic swirl diffuser of noise elimination outer casing underpart.
The equipment is mounted on the top of large space or industrial premises, is used in combination with heating system.
Temperature sensor includes upper temperature sensor and working region temperature sensor.
The automatic method for reducing large space indoor heating temperature gradient, it is characterised in that：
Include the following steps：
Upper temperature sensor and working region temperature sensor are set in large space, acquired at the top of large space respectively
Then the temperature of temperature and working region is calculated with temperature acquisition and signal transmitting device calculates the two temperature difference, by what is calculated
Temperature difference t is converted into electric current or voltage signal；
By Frequency Converter Control rotation speed of fan, when temperature difference t becomes larger, electric current or voltage also become larger, and control wind turbine turns
Speed becomes larger, and when temperature difference t changes are small, electric current or voltage also become smaller, and control rotation speed of fan becomes smaller, when the temperature difference is less than 1 degree or less
When, wind turbine is out of service.
Top is provided with round air inlet, and the effective area of round air inlet ensures that air draught speed is not more than 3m/s.
Electronic swirl diffuser is adjusted wind direction according to top supplying air temperature under the control of Electric Actuator,
To control air supplying distance and air-supply coverage area, and controls the air velocity in working region and be not more than 0.3m/s.
The present invention has the following advantages：
The present invention combines existing industrial premises and large space winter radiator heating indoor temperature gradient feature, accumulation
The lower part working region that heat in top non-active area conveys, can effectively reduce and be gone along with sb. to guard him caused by temperature gradient increase
The increased heating energy consumption of structure, also can effectively reduce caused by large space vertical temperature gradient increase that Air Infiltration is increased to be adopted
Warm energy consumption.For the present apparatus without accessing heating agent, leaving air temp is slightly above workspace temperature, and it is excessively high and generate to avoid wind pushing temperature
Hot-air floats, the too short problem of air supplying distance, and present apparatus control principle is simple, simple in structure, easy to install and use, consumption
A small amount of electric energy can reach good heating effect, and energy-saving effect is notable.
Description of the drawings
Fig. 1 is large space indoor temperature distribution schematic diagram.
Fig. 2 is vertical direction Temperature Distribution.
Fig. 3 is that certain large space indoor temperature changes with time figure.
Fig. 4 is this equipment structure chart (1-1 sectional view).
Fig. 5 is this equipment vertical view.
Fig. 6 is the vertical temperature gradient using this equipment.
Fig. 7 is the pressure comparison (note using the present apparatus：Pressure difference is pressure outside-room pressure).
In figure, (1) is noise elimination shell, (2) are round air inlet, (3) are first medium effeciency filter, (4) are wind turbine, (5) are
Current equalizer, (6) they are the tapered mouth of half hyperbolic type, (7) be electronic swirl diffuser, (8) be frequency converter, (9) be temperature acquisition calculating and
Signal transmitting device, (10-1) are upper temperature sensor, (10-2) is working region temperature sensor.
Specific implementation mode
The present invention will be described in detail With reference to embodiment.
The present invention relates to a kind of equipment of automatic reduction large space indoor heating temperature gradient, and the equipment includes column
Noise elimination shell 1,1 top of noise elimination shell is round air inlet 2, and lower part is electronic swirl diffuser 7, and inside is followed successively by from top to bottom
First medium effeciency filter 3, wind turbine 4 and current equalizer 5.7 top of electronic swirl diffuser of 1 lower part of noise elimination shell is that half hyperbolic type is tapered
Mouth 6.First medium effeciency filter 4 can easy to disassemble, cleaning replacement.
The equipment also includes temperature sensor, and the acquisition of temperature sensor cut-in temperature calculates and signal transmitting device 9, leads to
Frequency converter 8 is crossed to interconnect with wind turbine 4.Temperature sensor includes upper temperature sensor 10-1 and working region temperature sensor 10-
2。
The wind turbine 4 being arranged in noise elimination shell 1 is fixed on noise elimination shell 1, and feature is Wind Volume, small wind pressure, wind turbine
Rotating speed is controlled by frequency converter 8.The current equalizer 5 of fan outlet setting, makes the stream turbulence after wind turbine outlet air be lower, outlet air air-flow
Become uniform.The tapered mouth of half hyperbolic type 6 can make the static pressure of outlet air be converted to dynamic pressure, increase out wind velocity, expand present apparatus covering
Range.
The equipment is mounted on the top of large space or industrial premises, is used in combination with heating system.
Automatic reduction large space indoor heating temperature gradient method based on above equipment, includes the following steps：
Upper temperature sensor 10-1 and working region temperature sensor 10-2 is set in large space, acquisition is high respectively
Then the temperature of large space head temperature and working region is calculated with temperature acquisition and signal transmitting device 9 calculates the two temperature difference, will
The temperature difference t calculated is converted into electric current or voltage signal；
Rotation speed of fan is controlled by frequency converter 8, when temperature difference t becomes larger, electric current or voltage also become larger, and control wind turbine turns
Speed becomes larger, and when temperature difference t changes are small, electric current or voltage also become smaller, and control rotation speed of fan becomes smaller, when the temperature difference is less than 1 degree or less
When, wind turbine is out of service.
Top is provided with round air inlet 2, and the effective area of round air inlet ensures that air draught speed is not more than 3m/s.
Electronic swirl diffuser 7 is adjusted wind direction according to top supplying air temperature under the control of Electric Actuator,
To control air supplying distance and air-supply coverage area, and controls the air velocity in working region and be not more than 0.3m/s.
The present invention concrete operating principle be：
(1) large-space clean factory building causes hot-air in the upper of large space due to the floating of hot-air during heating
Portion region is accumulated, and prodigious temperature gradient is generated in short transverse, and large space top and work are acquired by temperature sensor
Make the temperature in region, temperature acquisition calculating and signal transmitting device 9 then applied to calculate large space top and the working region temperature difference,
And this temperature signal is changed into electric current or voltage signal, and rotation speed of fan is controlled by frequency converter 8, when temperature difference t becomes larger,
Electric current or voltage also become larger, and control rotation speed of fan becomes larger, and when temperature difference t changes are small, electric current or voltage also become smaller, and control wind
Machine rotating speed becomes smaller, and when the temperature difference is less than 1 degree or less, wind turbine is out of service.Top is slightly above to the hot-air of working region automatically
It is transported to working region, not only effectively reduces temperature gradient in space, moreover it is possible to reduce the indoor pressure difference with outdoor, prevent heat empty
The floating of gas.
(2) hot-air on large space top flows through just medium effeciency filter by the round air inlet 2 on the top of this device
3, it is filtered, by the pressurization of Wind Volume, small pressure difference wind turbine, after this part hot-air obtains kinetic energy, by current equalizer
5, so that the stream turbulence after wind turbine outlet air is lower, outlet air air-flow becomes uniform, can make outlet air through the tapered mouth of more than half hyperbolic types 6
Static pressure be converted to dynamic pressure, increase out wind velocity, electronic swirl diffuser 7 is under the control of Electric Actuator, according to top supplying air
Wind direction is adjusted in temperature, to control air supplying distance and air-supply coverage area, and controls the gas velocity in working region
Degree is not more than 0.3m/s, meets the comfort level of working region.
It is related to specific embodiment below, the technique effect that the present invention will be described in detail etc. reaches：
It tests the large space for being length × width × height=38 × 42.5 × 20m in a space to carry out, which sets
Radiator heating system is set, air quantity of the present invention is 8700m3/ h is mounted in the middle part of the large space, mounting height 16m.
When 1, using the present apparatus, 16.8 DEG C of heating temperature average out in the device coverage area, than individually using radiator
13.8 DEG C of system improves 3 DEG C, significantly improves person works' regional temperature.
When 2, using the present apparatus, in the device coverage area, vertical temperature gradient is 2~3 DEG C, and vertical temperature gradient is than single
5 DEG C or so (see Fig. 6) is solely reduced using radiator heating system, by formula (1) Q=KF (t-tw) it is found that effectively reducing this
Heat output of the building enclosure upper space to outdoor.
When 3, using the present apparatus, the pressure difference of the large space indoor and outdoor using radiator heating system than individually reducing 5Pa
Left and right (see Fig. 7), by formula (2) Δ P=(ρw- ρ) g Δs h and formula (3) Δ P=1/2 ε ρwv2, greatly reduce the cold of outdoor
Wind infiltration capacity, further reduced heating energy consumption.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And to any equivalent transformation that technical solution of the present invention is taken, it is that claim of the invention is covered.
Claims (7)
1. the equipment for reducing large space indoor heating temperature gradient automatically, it is characterised in that：
The equipment includes columnar noise elimination shell（1）, noise elimination shell（1）Top is round air inlet（2）, lower part is electronic rotation
Flow air port（7）, inside is followed successively by just medium effeciency filter from top to bottom（3）, wind turbine（4）And current equalizer（5）；
The equipment also includes temperature sensor, and the acquisition of temperature sensor cut-in temperature calculates and signal transmitting device（9）, pass through
Frequency converter（8）With wind turbine（4）Interconnection.
2. the equipment of automatic reduction large space indoor heating temperature gradient according to claim 1, it is characterised in that：
Noise elimination shell（1）The electronic swirl diffuser of lower part（7）Top is the tapered mouth of half hyperbolic type（6）.
3. the equipment of automatic reduction large space indoor heating temperature gradient according to claim 1, it is characterised in that：
The equipment is mounted on the top of large space or industrial premises, is used in combination with heating system.
4. the equipment of automatic reduction large space indoor heating temperature gradient according to claim 1, it is characterised in that：
Temperature sensor includes upper temperature sensor（10-1）With working region temperature sensor（10-2）.
5. the method for reducing large space indoor heating temperature gradient automatically, it is characterised in that：
Include the following steps：
In large space, upper temperature sensor is set（10-1）With working region temperature sensor（10-2）, acquire respectively tall and big
The temperature of top of space temperature and working region, then with temperature acquisition calculating and signal transmitting device（9）The two temperature difference is calculated, it will
The temperature difference t calculated is converted into electric current or voltage signal；
Pass through frequency converter（8）Rotation speed of fan is controlled, when temperature difference t becomes larger, electric current or voltage also become larger, and control rotation speed of fan
Become larger, when temperature difference t changes are small, electric current or voltage also become smaller, and control rotation speed of fan becomes smaller, when the temperature difference is less than 1 degree or less
When, wind turbine is out of service.
6. the method for automatic reduction large space indoor heating temperature gradient according to claim 5, it is characterised in that：
Top is provided with round air inlet（2）, the effective area guarantee air draught speed of round air inlet is no more than 3m/s.
7. the method for automatic reduction large space indoor heating temperature gradient according to claim 6, it is characterised in that：
Electronic swirl diffuser（7）Under the control of Electric Actuator, wind direction is adjusted according to top supplying air temperature, with
Air supplying distance and air-supply coverage area are controlled, and controls the air velocity in working region and is not more than 0.3m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810360064.0A CN108800300A (en) | 2018-04-20 | 2018-04-20 | The automatic device and method for reducing large space indoor heating temperature gradient |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810360064.0A CN108800300A (en) | 2018-04-20 | 2018-04-20 | The automatic device and method for reducing large space indoor heating temperature gradient |
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| CN108800300A true CN108800300A (en) | 2018-11-13 |
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| CN201810360064.0A Pending CN108800300A (en) | 2018-04-20 | 2018-04-20 | The automatic device and method for reducing large space indoor heating temperature gradient |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020192077A1 (en) * | 2019-03-26 | 2020-10-01 | 广东美的制冷设备有限公司 | Vortex ring generator, air conditioning device, indoor unit and control method |
| CN115540381A (en) * | 2022-07-14 | 2022-12-30 | 南京五洲制冷集团有限公司 | Air conditioning system for guaranteeing LNG thin-film tank process construction and control method |
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