CN102523994B - Local heating method and device for multi-span greenhouse - Google Patents
Local heating method and device for multi-span greenhouse Download PDFInfo
- Publication number
- CN102523994B CN102523994B CN2012100011702A CN201210001170A CN102523994B CN 102523994 B CN102523994 B CN 102523994B CN 2012100011702 A CN2012100011702 A CN 2012100011702A CN 201210001170 A CN201210001170 A CN 201210001170A CN 102523994 B CN102523994 B CN 102523994B
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- greenhouse
- gutter
- heating
- heating wire
- backplate
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 5
- 239000011449 brick Substances 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000010257 thawing Methods 0.000 claims description 3
- 229910001120 nichrome Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000001012 protector Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000005413 snowmelt Substances 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Classifications
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The invention discloses a local heating method and a device for a multi-span greenhouse. The method is characterized by converting electric energy into heat energy to directly and continuously heat the roof gutter and arching rack of the greenhouse to rapidly melt snow on the greenhouse roof. The device comprises a protective plate (4), heating wires (3), locking clamps (2), a temperature sensor (10), an electric leakage protector (5), an intelligent temperature control switch (6), a power switch (7) and an external power source (8). The heating wires (3) are mounted inside the protective plate (4) where U-shaped grooves are formed, are horizontally arranged on two sides of a roof gutter (1) of the multi-span greenhouse through the locking clamps (2) and tightly contacts the roof gutter. The control over the heating process is achieved by controlling circuit on/off and power-on time. The device has a high heating speed, an obvious effect and a target heating region, is convenient for installation and maintenance and easy to operate, and high a high performance-price ratio.
Description
Technical field
The invention belongs to the chamber facility field, particularly relate to a kind of method and apparatus of attached-greenhouse local heat.
Background technology
Along with the development of industrialized agriculture technology and equipment, China's combined greenhouse construction area leaps into the front ranks of the world.At present, the anti-snow disaster design of greenhouse structure mainly is based on the snow reference pressure that the statistics meteorological data is determined that passes through in the certain time limit in this area, and this design can be satisfied the requirement of attached-greenhouse structural safety under normal conditions.Yet along with greenhouse effect and global warming, China especially southern area in recent years winter bad weather occurrence number showed increased such as severe snow.In the winter time under the severe weather conditions such as sudden lasting snowfall, the load that roof and gutter position produce because of a large amount of accumulated snow may surpass the greenhouse structure maximum load that hypothesis can be born when design, cause members such as roof bow member, gutter to produce destructive flexural deformation, the structural safety in greenhouse has been constituted threat.If improve the greenhouse structure load-carrying properties according to extreme weather conditions, will significantly improve structural steel amount and cost.Moreover, the exceedingly odious weather of continuation snowfall have a uncertainty, traditional integral heating mode of heating is big at the southern area cost price, is difficult to promote.Therefore press for a kind of device that can improve gutter and position, roof temperature, so that the easy landing of accumulated snow flows away, avoid accumulating the destruction of causing greenhouse structure because of accumulated snow.
The disclosed a kind of insulating plastic pipe booth that removes the snow of Chinese invention patent [200910195893.9], this plastic tunnel therein empty pipeline skeleton internal placement heating wire to be arranged and adopt solar panel be the heating wire power supply.This invention is installed in heating wire in the roof bow member pipeline, and heating region is less relatively, and builds up the difficult installation in back and daily maintenance in the greenhouse; In addition, the solar panel power supply is adopted in this invention, under lasting cloudy snowy weather condition, can't operate as normal be the heating wire continued power generally, and at present too can cell panel price height, the opto-electronic conversion availability is low, be difficult on the power reach, the continued power in the weather that snows can not be implemented in, guarantee greenhouse safe requirement can not be reached.
Summary of the invention
For overcoming existing deficiency at greenhouse local heat technology, the purpose of this invention is to provide a kind of method and apparatus that can carry out Fast Heating to gutter position, attached-greenhouse roof regional area, this method can realize directly greenhouse gutter and bow member being continued heating, the fast temperature rise of firing rate is obvious, the heat transfer zone is extensive relatively, this apparatus structure reasonable in design realize to gutter and near can effectively improve the energy in the Fast Heating of bow member zone utilization, the method simple and fast that installation process provides with respect to existing patent, maintenance and repair easily, can freely dismantle long service life according to seasonal variation.For solving above technical problem, the technical scheme that the present invention takes is:
A kind of attached-greenhouse local heat method, both sides at greenhouse gutter lateral wall are installed heating wire respectively, the method that employing converts electrical energy into heat energy provides heat for greenhouse gutter and bow member, the greenhouse gutter directly contacts with the accumulated snow of greenhouse roof with bow member, the heat that the heating wire heating produces is directly transferred in the accumulated snow by gutter and bow member, make the gutter position with near the accumulated snow on the framework of gutter directly heating and melting become water and flow away along gutter, simultaneously because greenhouse bow member normally circular arc or triangle, upper strata accumulated snow relies on the effect of self gravitation to glide along greenhouse roof to continue to be heated thawing after the bow member lower floor snow melting.
This invention is that heating wire is fixed in the backplate groove of gutter both sides, and what the groove of backplate adopted is the structural shape of U font.Backplate adopts this kind structural shape to compare with other structural shapes, be installed in the heating wire in the U font groove backplate, snow melt efficient height under the situation of same units time snowfall, energy consumption also can guarantee within zone of reasonableness simultaneously, under the prerequisite that not only guarantees safety of structure but also can effectively improve utilization efficiency of energy, save the greenhouse and use spending like this.Maximum snowfall in the certain time limit that obtains according to local meteorological statistics data and the type in greenhouse, the greenhouse user of service can select the specification of heating wire and backplate accordingly flexibly before this device is installed.
A kind of attached-greenhouse area heating installation; it is characterized in that: described heater comprises heating wire, earth leakage protective device, intelligent temperature control switch, power switch, external power source, backplate, tightening jig and gutter; heating wire, earth leakage protective device, intelligent temperature control switch, power switch and external power source are connected successively; heating wire is fixed in the U font circular groove of backplate; backplate is close to the left and right sides that the gutter lateral wall is installed in parallel in gutter, relies on tightening jig and gutter to fix.
Described a kind of attached-greenhouse area heating installation is characterized in that: the degree of depth of circular groove is 3/4 of heating wire diameter in the backplate.
Described a kind of attached-greenhouse area heating installation is characterized in that: the vertical range in the backplate between the adjacent circular groove remains within 3 ~ 4cm.
Described a kind of attached-greenhouse area heating installation is characterized in that: standard width of a room in an old-style house bow member is equipped with temperature sensor between every span centre in greenhouse, and temperature sensor forms in parallel with intelligent temperature control switch, earth leakage protective device with the series circuit that heating wire constitutes.
Described a kind of attached-greenhouse area heating installation, it is characterized in that: temperature sensor is apart from gutter 30 ~ 100cm.
Because the enforcement of above technical scheme, the present invention compared with prior art has following advantage:
The heating means programming rate that this method utilization electric energy is converted into heat energy is fast, in the course of work of heating wire, can be controlled automatically heating-up temperature by temperature sensor, adopt the method for this local heat can ensure the structural safety in greenhouse more targetedly, this device Keelof green house structure that can guarantee reasonable in design is satisfying the reasonable availability that improves the energy under the precondition of safety in utilization, this device building block is relatively simply cheap, usability price ratio height, the lateral wall that heating wire is fixed on gutter is installed simple, can free convenient disassembly maintains and safeguards according to changes of seasons.
Description of drawings
Accompanying drawing 1 is the front view of structural representation of the present invention;
Accompanying drawing 2 is the cutaway view of structural representation of the present invention;
Accompanying drawing 3 is circuit theory diagrams of the present invention;
Accompanying drawing 4 is temperature sensor of the present invention installation site schematic diagram;
Wherein: 1, gutter; 2, tightening jig; 3, heating wire; 4, backplate; 5, earth leakage protective device; 6, intelligent temperature control switch; 7, power switch; 8, external power source; 9, fastening bolt; 10, temperature sensor.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiment of the invention is elaborated:
A kind of attached-greenhouse local heat system as shown in Figure 1; heating wire 3, earth leakage protective device 5, intelligent temperature control switch 6, battery main switch 7 connect successively and connect with external power source 8; heating wire 3 is installed in the left and right sides of attached-greenhouse gutter 1; heating wire 3 is fixed in the U font circular groove of backplate 4, and tightening jig 2 is all installed in the rear and front end of backplate 4 is fixed on the gutter 1 it.
A kind of in the various heating alloies such as the Aludirome heating wire of having taked insulation processing or nichrome heating wire of described heating wire 3, can according to actual needs heating wire be changed into suitable electric heating brick or silicon rubber electric hot plate, this will make heated perimeter wider, this moment the backplate groove be shaped as square, with the form fit of electric heating brick or silicon rubber electric hot plate, its degree of depth is the thickness of electric heating brick or silicon rubber electric hot plate.
Described external power source 8 is made up of commercial power and solar panel, can't provide for heating wire under enough voltage condition at solar panel, and heating wire directly relies on commercial power to keep work, guarantees continuing of heating process.
As shown in Figure 1, what backplate 4 inboard grooves adopted is that the U font processes, contrast by the test with other pattern grooves, with a kind of heating wire under the situation of same units time snowfall and operating voltage, heating wire 3 snow melts that are installed in the U font groove are most effective, namely the loss of electric energy is lower under the prerequisite that guarantees the greenhouse structure safety, vertical range between backplate 4 interior two grooves remains on and is suitable distance within 3 ~ 4cm simultaneously, the greenhouse user can build the meteorological statistics in ground according to the greenhouse and understand maximum snowfall in the certain time limit in this area, selects suitable heating wire specification and supporting backplate according to the pattern of the statistics that obtains and self greenhouse structure.
As shown in Figure 2, backplate 4 is fixed on the tightening jig 2 by tight fixed bolt 9, tightening jig 2 was fixed on the gutter 1 by tight fixed bolt 9 and cooperating of nut, thereby realized the fixing of heating wire 3 heating locations, in the rear and front end of backplate 4 a tightening jig 2 was installed respectively.
As shown in Figure 3; intelligent temperature control switch 6, earth leakage protective device 5 constitute series circuit with heating wire 3; form in parallel with temperature sensor 10; battery main switch 7 is connected with the parallel circuit that forms; power-on master switch 7 during the work of attached-greenhouse heater; heating wire 3 is converted into heat energy with electric energy, promotes the temperature of gutter and bow member contacted with it rapidly, accelerates the thawing of accumulated snow.
As shown in Figure 4, the stain position is the installation site of temperature sensor 10 among the figure.Temperature sensor 10 is installed between every span centre on the standard width of a room in an old-style house bow member, apart from gutter 30 ~ 100cm, temperature sensor 10 is used with intelligent temperature control switch 6, the Temperature numerical that intelligent temperature control switch 6 monitors according to sensor realizes the control to the heating wire power on/off, when the temperature that sensor monitors reaches 50 degrees centigrade, intelligent temperature control switch 6 automatic shutoff circuit heating wire 3 quit work, and prevent from continuing heating and cause the chamber covering material accelerated ageing; When temperature sensor monitors drops to 10 switches of intelligent temperature control when spending, 6 automatic processing circuits to temperature.
The heat that heating wire work produces in the process of snowfall makes the snow melt Cheng Shui that drops near the roof area gutter and the gutter flow away along gutter, top area on the roof has constant slope owing to roof itself, accumulated snow can move down the influence that also can be subjected to the heating wire heating in the gravity effect, stop or accumulated snow thickness can disconnect circuit when being reduced to the situation that can not influence greenhouse structure safety in snowfall, save the consumption of the energy.
Claims (4)
1. attached-greenhouse area heating installation, it is characterized in that: described device comprises heating wire (3), earth leakage protective device (5), intelligent temperature control switch (6), power switch (7), external power source (8), backplate (4), tightening jig (2) and gutter (1), heating wire (3), earth leakage protective device (5), intelligent temperature control switch (6), power switch (7) and external power source (8) are connected successively, heating wire (3) is fixed in the U font circular groove of backplate (4), backplate (4) is close to the left and right sides that gutter (1) lateral wall is installed in parallel in gutter (1), relies on tightening jig (2) and gutter (1) fixing; The method that employing converts electrical energy into heat energy provides heat for greenhouse gutter and bow member, the greenhouse gutter directly contacts with the accumulated snow of greenhouse roof with bow member, the heat that the heating wire heating produces is directly transferred in the accumulated snow by gutter and bow member, make the gutter position with near the accumulated snow on the framework of gutter directly heating and melting become water and flow away along gutter, simultaneously because greenhouse bow member normally circular arc or triangle, upper strata accumulated snow relies on the effect of self gravitation to glide along greenhouse roof to continue to be heated thawing after the bow member lower floor snow melting; The degree of depth of the interior circular groove of described backplate (4) is 3/4 of heating wire (3) diameter; Standard width of a room in an old-style house bow member is equipped with temperature sensor (10) between every span centre in greenhouse, and temperature sensor (10) forms in parallel with intelligent temperature control switch (6), earth leakage protective device (5) with the series circuit that heating wire (3) constitutes.
2. a kind of attached-greenhouse area heating installation as claimed in claim 1, it is characterized in that: temperature sensor (10) is apart from gutter (1) 30 ~ 100cm.
3. a kind of attached-greenhouse area heating installation as claimed in claim 1, it is characterized in that: described heating wire (3) is Aludirome heating wire or nichrome heating wire.
4. a kind of attached-greenhouse area heating installation as claimed in claim 1, it is characterized in that: when heating wire (3) is replaced by electric heating brick or silicon rubber electric hot plate, this moment backplate (4) groove be shaped as square, with the form fit of electric heating brick or silicon rubber electric hot plate, the degree of depth of backplate (4) groove is the thickness of electric heating brick or silicon rubber electric hot plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100011702A CN102523994B (en) | 2012-01-05 | 2012-01-05 | Local heating method and device for multi-span greenhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100011702A CN102523994B (en) | 2012-01-05 | 2012-01-05 | Local heating method and device for multi-span greenhouse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102523994A CN102523994A (en) | 2012-07-04 |
| CN102523994B true CN102523994B (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100011702A Expired - Fee Related CN102523994B (en) | 2012-01-05 | 2012-01-05 | Local heating method and device for multi-span greenhouse |
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| CN (1) | CN102523994B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971204A (en) * | 2016-05-12 | 2016-09-28 | 北京聚能温室科技有限公司 | Large multi-span greenhouse solar snow removing device and application method thereof |
| CN113181679A (en) * | 2021-04-20 | 2021-07-30 | 金溪华香香料有限公司 | Recrystallization purification device of linalyl acetate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201479678U (en) * | 2009-09-11 | 2010-05-26 | 潘百涛 | Terraced greenhouse gutter heat-preservation system |
| CN202406667U (en) * | 2012-01-05 | 2012-09-05 | 江苏大学 | Local heating device for multi-span greenhouse |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50142648A (en) * | 1974-05-07 | 1975-11-17 | ||
| JPS50142648U (en) * | 1974-05-16 | 1975-11-25 | ||
| JPS51149038U (en) * | 1975-05-23 | 1976-11-29 | ||
| JPS51149038A (en) * | 1975-06-17 | 1976-12-21 | Oki Densen Kk | Fire and heat proof phototransmissive fiber |
| JP3059358B2 (en) * | 1995-05-22 | 2000-07-04 | 株式会社山本製作所 | Snow melting equipment in multi-storey greenhouse |
| JP2000157071A (en) * | 1998-11-26 | 2000-06-13 | Tatsuguchi Kogyo Glass Kk | Cultivation greenhouse for preventing snow and multi- span type cultivation greenhouse for preventing snow |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201479678U (en) * | 2009-09-11 | 2010-05-26 | 潘百涛 | Terraced greenhouse gutter heat-preservation system |
| CN202406667U (en) * | 2012-01-05 | 2012-09-05 | 江苏大学 | Local heating device for multi-span greenhouse |
Non-Patent Citations (4)
| Title |
|---|
| JP公开实用昭和50-142648 1975.11.25 |
| JP公开实用昭和51-149038 1976.11.29 |
| JP特开2000-157071A 2000.06.13 |
| JP特开平8-312199A 1996.11.26 |
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| CN102523994A (en) | 2012-07-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120704 Assignee: Kunshan Yonghong Greenhouse Co.,Ltd. Assignor: Jiangsu University Contract record no.: 2017320000140 Denomination of invention: Local heating method and device for multi-span greenhouse Granted publication date: 20130717 License type: Common License Record date: 20170525 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 |