CN204593557U - A kind of electric heating furnace with multiple protection functions - Google Patents
A kind of electric heating furnace with multiple protection functions Download PDFInfo
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- CN204593557U CN204593557U CN201520282292.2U CN201520282292U CN204593557U CN 204593557 U CN204593557 U CN 204593557U CN 201520282292 U CN201520282292 U CN 201520282292U CN 204593557 U CN204593557 U CN 204593557U
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- 238000005485 electric heating Methods 0.000 title claims abstract description 53
- 230000004224 protection Effects 0.000 title claims abstract description 26
- 230000006870 function Effects 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 121
- 238000012546 transfer Methods 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000000919 ceramic Substances 0.000 claims abstract description 32
- 238000009434 installation Methods 0.000 claims abstract description 24
- 238000009413 insulation Methods 0.000 claims abstract description 16
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- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 7
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010949 copper Substances 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 4
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- 230000002528 anti-freeze Effects 0.000 claims description 6
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Abstract
The utility model relates to a kind of electric heating furnace with multiple protection functions, comprises shell and at least one heating component wherein arranged, power supply module, Control Component, oral siphon, outlet pipe, small-power pumping installations, demineralized water treatment device, water replanishing device and automatic exhaust steam valve.Heating component comprises many heat-transfer pipes and multiple PTC ceramic heating element, described many heat-transfer pipe parallel communication, and heat-transfer pipe is three-decker, innermost layer is layers of copper, intermediate layer is alloy aluminium lamination, and outermost layer is electric insulation layer, and appropriate location is also provided with small-power pumping installations in the enclosure.Electric heating furnace Inlet and outlet water flow of the present utility model is large, is suitable for many groups and forms central heating thermal source; Heat-transfer pipe increases alloy aluminium lamination, increases rate of heat transfer; Heat-transfer pipe and PTC ceramic heating element all arrange electric insulation layer, make electricity separation reliable, increase security of system and durability; The small-power pumping installations set up makes the flowing of heating stove inner fluid accelerate, prevents pipe network from blocking and dry combustion method.
Description
Technical field
The utility model relates to electric-heating technology field, is specifically related to a kind of electric heating heating device technology area with multiple protection functions.
Background technology
Exist in the region of heating demand in the winter time, a part adopts the mode of coal fired central heating, but this mode to there is heat supply efficiency low cost cost high, pipe network popularity rate is limited, the problems such as urban development demand can not be met, and still have part building can not be linked in the pipe network of central heating.Still the mode such as fire coal or natural gas is adopted to carry out in units of family from heating in urban parts area and vast rural area family, this also exists the problem of environmental pollution on the one hand, another aspect is also easy causes burning insufficient because air is unobstructed not, thus causes anthracemia accident to happen occasionally.Traditional coal heating stove is not easy to heat at times, is unfavorable for energy-conservation, and seriously polluted.
Increasingly serious along with the energy and environmental problem, the development trend of winter heating shifts to electric heating mode gradually.Also occurred electro-thermal steam stove on the market, but there is product structure complexity, the problems such as electric conversion efficiency is low, make this series products fail to obtain penetration and promotion.
PTC ceramic heat technology makes the electrical heating technique of electricity separation grow up gradually.PTC is a kind of novel semiconductor ceramic material, and it is based on barium titanate, and infiltrate many kinds of substance aft-loaded airfoil and form, heating efficiency is higher.There is Curie temperature in PTC, when its temperature is lower than design temperature, its resistance value can raise with its temperature and diminish; When its temperature is higher than design temperature, its resistance value becomes large with its temperature rising.Due to the above-mentioned characteristic of this ceramic material, do not need special temperature controller and thermal resistance thermocouple equitemperature sensor to carry out temperature feedback and can carry out heating control to heater, it is the material behavior leaning on self that its temperature regulates, thus enables product temperature automatically controlled and have the service life much larger than other heater.Further, it can the change of environmentally temperature regulate the thermal power of self to export, so it can by the power consumption optimal control of heater minimum, the material of high heating efficiency also significantly improves the utilization ratio of electric energy simultaneously.
With the electric heater unit that PTC ceramic heating element is core component in prior art, generally include shell and the electric control chamber wherein arranged, electrical heating room and discrepancy water pipe, at least one PTC heater is provided with in described electrical heating room, PTC heater is isolated with heating tube and is connected with external power source, also be provided with a dividing plate water inlet and delivery port to be separated, dividing plate is provided with water hole.The advantages such as this PTC electric heater unit has the flames of anger, unglazed consumption, quick heating, power consumption is low, thermal effect is high, the life-span is long.
But current PTC electric heating furnace is because Curie temperature is higher than device tolerable temperature, may occur that when water shortage appears in electric heating furnace temperature raises, thus occur do not reach Curie temperature but because of particular device not withstand high temperatures and occur damage.
PTC electric heater unit is used for the situation of a small amount of domestic water in addition, if tradition will be replaced to concentrate coal heating mode, current PTC electric heater unit underpower, the water yield are inadequate, cannot meet the demand of central heating.
Utility model content
Based on above-mentioned technical problem, the utility model provides a kind of electric heating furnace of modified node method, thus realizes multiple protection functions and can provide the confession confluent of enough central heatings.
The utility model proposes following technical scheme:
With an electric heating furnace for multiple protection functions, at least one heating component, power supply module, Control Component, oral siphon, outlet pipe, demineralized water treatment device, water replanishing device and the automatic exhaust steam valve that comprise shell and wherein arrange,
Described heating component comprise be arranged side by side many heat-transfer pipes, be folded in the PTC ceramic heating element between every two heat-transfer pipes and surround the protective cover of described heat-transfer pipe and described PTC ceramic heating element; wherein; described PTC ceramic heating element forms loop with described power supply module electrical communication respectively; thus heating and stopping heating under the control of described Control Component; described PTC ceramic heating external body is coated with electric insulation layer
The inner surface of described protective cover is provided with heat-insulation layer,
Demineralized water treatment device is connected to the arrival end of oral siphon, and automatic exhaust steam valve is connected to the port of export of outlet pipe, wherein,
Described many heat-transfer pipes are by means of being positioned at many heat-transfer pipe two ends and oral siphon vertical with it and outlet pipe parallel communication, and heat-transfer pipe described in each is three-decker, and innermost layer is copper, and intermediate layer is alloy aluminium lamination, and outermost layer is electric insulation layer,
Also be provided with small-power pumping installations in described shell, flow for making electric heating furnace inner fluid and accelerate, and
Described Control Component realizes overtemperature protection by the pyrostat be arranged in shell.
By such design, electric heating furnace is had the following advantages: one, energy saving, high-efficiency environment friendly; Two, heat-transfer pipe UNICOM in parallel, Inlet and outlet water flow is large, is suitable for many groups and forms central heating thermal source; Three, heat-transfer pipe increases alloy aluminium lamination, increases rate of heat transfer; Four, heat-transfer pipe and PTC ceramic heating element all arrange electric insulation layer, make electricity separation reliable, increase security of system and durability; Five, the self-characteristic of small-power pumping installations, Control Component and PTC ceramic heating body realizes the triple overtemperature protections to device jointly.
Preferably, described many heat-transfer pipes are vertically arranged side by side, and outlet pipe and oral siphon are horizontally set on above and below heat-transfer pipe respectively.
Preferably, described many heat-transfer pipe horizontal Tiles are arranged, and outlet pipe and oral siphon are vertically arranged on the both sides of heat-transfer pipe respectively, and make water inlet be positioned at the lower end of oral siphon, and delivery port is positioned at the upper end of outlet pipe.
Preferably, the quantity of described heating component is three, mutually electrical connection and water route is in parallel between described heating component.
Preferably, described Control Component comprises Time-sharing control button, for carrying out time-division transfer to heat generating component.
Preferably, described Control Component comprises thermostatic control button, controls for realizing constant indoor temperature by means of the temperature sensor be arranged in shell.
Preferably, described Control Component comprises antifreeze button, starts antifreeze operation during for being down to 5 degrees Celsius in environment temperature.
Preferably, the cross section of described heat-transfer pipe is circular, oval or square.
Preferably, electric heating furnace of the present utility model is also provided with fast installation support, and described fast installation support comprises horizontal support, for fixing multiple longitudinal fixed arm of described horizontal support and being positioned at described fixed arm bottom for supporting the gusseted part of described shell.
Accompanying drawing explanation
Fig. 1 shows the work pipe network schematic diagram of the utility model heating stove;
Fig. 2 shows the internal structure schematic diagram of the utility model heating stove;
Fig. 3 shows connecting relation and the water (flow) direction schematic diagram of the utility model heating stove heat-transfer pipe;
Fig. 4 is Tu2Zhong A district amplification view, shows the internal structure of the utility model heating stove heat generating component;
Fig. 5 shows the schematic diagram of the utility model Control Component; And
Fig. 6 shows the schematic diagram of the quick support of the utility model heating stove wall hanging.
Detailed description of the invention
Below in conjunction with accompanying drawing, implementation of the present utility model is described in detail.
Electric heating furnace with multiple protection functions of the present utility model is applied to central heating or individual heating, and Fig. 1 shows electric heating furnace of the present utility model for work pipe network schematic diagram during individual heating.Visible in figure, electric heating furnace 1 receives the water processed through demineralized water treatment device 2 and is transported to after electrical heating in multiple radiators 5 of connecting in pipe network, and the water flowing through multiple radiator 5 is lowered the temperature gradually, is pumped back to electric heating furnace 1 through water pump 7.Demineralized water treatment device 2 ensure that in heating stove pipe network and heats non-scaling for a long time, extends the service life of heating stove.In pipe network, have a small amount of current lose, therefore in water pump 7 upstream, expansion tank 4 is set as water replanishing device.The water outlet of electric heating furnace 1 is provided with automatic exhaust steam valve 3, is in suitable level with the steam pressure automatically controlled in heating stove pipe network.The delivery port of electric heating furnace 1 and the outside of water inlet arrange maintenance water valve 6 respectively, for cutting off current when keeping in repair heating stove.
Below in conjunction with Fig. 2, Fig. 3, the internal structure of electric heating furnace 1 is described.
Electric heating furnace 1 totally comprises shell 111 and the power supply module 11 wherein arranged, Control Component 12, at least one heating component 13, oral siphon 15, outlet pipe 16, demineralized water treatment device 2, water replanishing device 4 and automatic exhaust steam valve 3.Heating component 13 entirety is in flat rectangular body, and in it, tile vertically is provided with many heat-transfer pipes 17, and many heat-transfer pipes 17 are by means of horizontally disposed outlet pipe 16 above and below heating component 13 and oral siphon 15 realize parallel communication respectively.
Many heat-transfer pipes 17 or also can arrange (as shown in Figure 3) by horizontal Tile, at this moment oral siphon 15 and outlet pipe 16 are separately positioned on its both sides vertical with it, as long as guarantee water inlet 8 in below and delivery port 9 up.
As shown in Figure 3, many heat-transfer pipe 17 UNICOMs in parallel, current enter from the water inlet 8 being positioned at oral siphon 15 one end through pumping, flow to all heat-transfer pipes along P direction as shown by the arrows in Figure 4 simultaneously, import the delivery port 9 being positioned at outlet pipe 16 afterwards, be admitted to pipe network.Due to being arranged in parallel of many heat-transfer pipes, the heat transfer pipe gross area, much larger than the bore of outlet pipe 16 and oral siphon 15, can form certain hydraulic pressure to delivery port, play the effect of current speedup.Therefore the mode that is arranged in parallel makes electric heating furnace 1 Inlet and outlet water flow large, is suitable for large area heat supply, is particularly suitable for many groups and arranges formation central heating thermal source.
When many heat-transfer pipes 17 are longitudinally arranged side by side, heat-transfer pipe 17 inside due to cold water at below hot water up, there is vortex phenomenon in pipeline, be conducive in short duct length, realize fully heating.
Aluminium alloy protective cover 22 arranges and covers the periphery of many heat-transfer pipes 17 and multiple PTC ceramic heating element 20.Aluminium alloy protective cover 22 is on the whole in flat rectangular body, and the position of corresponding PTC ceramic heating element 2 on its flat surface, the position namely between corresponding two heat-transfer pipes 17, is provided with corresponding multiple narrow gap 131.The plurality of narrow gap is conducive to PTC ceramic heating element 2 when heating tube temperature is too high to heating component external cooling.
The inner surface of aluminium alloy protective cover 22 is provided with heat-insulation layer 23, and heat-insulation layer 23 adopts high-temperature insulation insulation material, such as senior centrifugal glass fibre silk flosssilk wadding.
In shell 111, small-power pumping installations 14 is arranged in appropriate location, flowing and accelerating, preventing from blocking pipe network and avoiding dry combustion method for making electric heating furnace 1 inner fluid.
Water softening device 2 and expansion tank 4 are arranged in the inside of shell 111, and the water pump 7 in Fig. 2 shown in dotted line is arranged in device outside for the consideration that device is compact.
Below with reference to Fig. 4, the internal structure of the heating component 13 of electric heating furnace 1 is described.
As shown in Figure 4, heat-transfer pipe 17 is three-decker, and innermost layer is copper pipe 18, and intermediate layer is alloy aluminium lamination 19, and outermost layer is electric insulation layer 191.Heat-transfer pipe increases alloy aluminium lamination 19, increases heat conduction efficiency, makes the heat-transfer pipe of all parallel connections within the extremely short time, the water in pipe can be heated to suitable temperature.The cross section of heat-transfer pipe is the cross sectional shape be applicable to such as circular, oval or square.Outlet pipe 16 and oral siphon 15 are preferably circular copper pipe.
Heat-transfer pipe 17 is made by existing pipe fitting forming technique, such as stretching, injection technique, preferably adopts solid-liquid roller technology of pricking to be shaped.Outlet pipe 16 and oral siphon 15 adopt existing pipe fitting forming technique, and at heat-transfer pipe relevant position apertured and heat-transfer pipe Flange joint, connecting portion arranges seal.
Multiple PTC ceramic heating element 20 is folded with between every two heat-transfer pipes 17, electrode 24 is provided with between every two PTC ceramic heating elements 20, PTC ceramic heating element 20 is divided into three groups by lead-in wire by electrode 24, form loop with three-phase alternating-current supply assembly electrical communication respectively, the controlled assembly of power supply module controls thus makes the controlled heating of PTC ceramic heating element under suitable condition and stop heating.If the lead-in wire of certain PTC ceramic heating element 20 breaks, then system cut-off gives open-phase protection.
PTC ceramic heating element 20 outside is coated with electric insulation layer 21.Electric insulation layer 21 adopts high resistance mineral crystal high-temperature pressure-proof filmogen to be matrix, with Alpha-alumina, silicon nitride or high mica sheet etc. for filler.Electricity separation is reliable, increases security of system and durability.
Electric heating furnace 1 of the present utility model can in shell 111 before and after stacked three heating components 13 are set, each heating component 13 is mutually electrically in parallel and water route is in parallel, thus make Control Component 12 can control respectively three heating components 13 start one of them, two or three, thus meet the different heating demands of people.Control Component 12 adopts step-by-step movement timesharing throw-in play to control heating component 13, and such heating component 13 can drop at random according to load variations or quit work, and reduces the impact to electrical network.Control Component 12 equally also can manually open, stop heating component number, facilitates user from the power of Row sum-equal matrix electric heating furnace 1.
Control Component 12 is connected with the circuit of electric heating furnace 1 and designs as shown in Figure 5.As seen from the figure, Control Component 12 and control panel 25, temperature sensor 27, pyrostat 28, pump motor 29, PTC ceramic heating element 20 are electrically connected, complete following control model: under electric heating furnace 1 holding state, user adopts three kinds of modes to control electric heating furnace 1 by the different control button of control panel 25 to heat, the first is constant temperature mode, is controlled by set temperature set point; The second is Time-sharing control pattern, controls by arranging the heating period; And the third is anti-freezing pattern, namely electric heating furnace 1 acquiescence is in holding state, will describe in detail below.
Under the first starts thermostatic control button mode, temperature sensor 27 gathers room temperature, when room temperature is lower than temperature set-point, the Control Component 12 of electric heating furnace 1 makes the electrode loop of PTC ceramic heating element 20 connect, PTC ceramic heating element 20 generates heat, for pipe network provides heat recirculated water, thus reach the object of heating.
Under the second starts Time-sharing control button mode, Control Component 12 makes PTC ceramic heating element 20 electrode loop connect within the heating period arranged, and PTC ceramic heating element 20 generates heat, and for pipe network provides heat recirculated water, thus reaches the object of heating.The carrying out practically period of the second time-shared fashion can by user's sets itself, such as user can be arranged on the different heating period and heat, can be 4:00-7:00,16:00-20:00 and the 23:00-0:00 time period heats, or also can be heat 3:00-7:00,10:00-12:00 and the 17:00-21:00 time period.In a second mode of operation, if environment temperature is down to 5 degrees Celsius when the non-heating period, then Control Component 12 starts antifreeze operation, makes PTC ceramic heating element 20 electrode loop connect a period of time, prevents heating stove pipe network from freezing damage.
The third starts antifreeze button mode, and namely heating stove acquiescence is in holding state, when environment temperature then starts heating lower than 5 degrees Celsius, prevents heating stove pipe network from freezing damage.Each control model adopts circuit design means of the prior art to realize.
This heating stove comprises triple overheat protective function.The small-power water pump 14 be arranged in the shell 111 of electric heating furnace 1 can make the Inner eycle water of electric heating furnace 1 accelerate flowing, prevents that pipe network from blocking, dry combustion method, thus pipe network can be protected not easily overheated, and this is first heavily to protect.When pyrostat 28 collects electric heating furnace 1 high temperature signal, such as 105 DEG C time, Control Component 12 is forced to disconnect PTC ceramic heating element 20 electrode loop, thus reaches the object of further overtemperature protection, and this is second heavily to protect.The Curie temperature of PTC ceramic heating element 20 itself can overtemperature protection, the high temperature signal temperature value that the Curie temperature of usual PTC ceramic heating element itself sets higher than pyrostat, and this is triple protection.
This electric heating furnace 1 also has creepage protection function, after Control Component 20 detects power supply electrical leakage, automatically cuts off the power supply of electric heating furnace 1; Dry burning protection function, when water level is shut down lower than during the lowest limit water level set; Supply voltage abnormity protection function, when unusual fluctuations appear in supply voltage, auto-breaking.
When this electric heating furnace 1 is for transforming the coal heating boiler room of traditional form, usual multiple stage heating stove series and parallel uses, and increases water yield further, forms central heating system.The quantity that heating stove is equipped with is determined according to heating area, also relevant with the house insulation performance in heating region.Very roughly, every square meter heating area needs to be equipped with 60w heating equipment.The rated power of an electric heating furnace 1 is 15-40kw.For the ease of controlling, also arrange central controller to monitor the heating system be cascaded, central controller can monitor the room temperature of respective user in pipe network, when the room temperature of certain user in pipe network starts electric heating furnace 1 lower than during design temperature, when the room temperature of users all in pipe network is all higher than electric heating furnace 1 out of service during design temperature; Central controller also can set heating interval, thus carries out heating operation in the set time section of every day.
This electric heating furnace 1 can carry out console mode installation or realize wall-hanging installation by means of fast installation support 300.As shown in Figure 6, described fast installation support 300 comprises horizontal connection bracket 34 and locating support 35, and the fixed arm 32 of longitudinal direction.Connection bracket 34 is used for the fixed arm 32 of connection two longitudinal directions and forms an installation group, and an installation group is used for installation electric heating furnace 1.Locating support 35 is for connecting location by multiple installation group, thus by multiple stage heating stove with fixed intervals location and installation together, fixed arm 32 is installed by installing hole 31, each described fixed arm 32 bottom is provided with the gusseted part 30 for supporting described shell 111, this triangular support part has a horizontal support end face, and bottom is stable is in the mounted state placed on the horizontal support end face of triangular support part for heating stove.Heating stove 1 by means of the fixed structure at top, as fixing hole, be fixed on be positioned at fast installation support fixed arm 32 above two quick attach structures 33 on, quick attach structure is such as hook formation.Fast installation support 300 is by means of passing on to be installed that is bolted to such as load-bearing wall of multiple rack mounting apertures 31.
Last it is noted that above-described each embodiment is only for illustration of the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or to wherein partly or entirely technical characteristic carry out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (9)
1. with an electric heating furnace for multiple protection functions, at least one heating component, power supply module, Control Component, oral siphon, outlet pipe, demineralized water treatment device, water replanishing device and the automatic exhaust steam valve that comprise shell and wherein arrange,
Described heating component comprise be arranged side by side many heat-transfer pipes, be folded in the PTC ceramic heating element between every two heat-transfer pipes and surround the protective cover of described heat-transfer pipe and described PTC ceramic heating element; wherein; described PTC ceramic heating element forms loop with described power supply module electrical communication respectively; thus heating and stopping heating under the control of described Control Component; described PTC ceramic heating external body is coated with electric insulation layer
The inner surface of described protective cover is provided with heat-insulation layer,
Demineralized water treatment device is connected to the arrival end of oral siphon, and automatic exhaust steam valve is connected to the port of export of outlet pipe,
It is characterized in that:
Described many heat-transfer pipes are by means of being positioned at many heat-transfer pipe two ends and oral siphon vertical with it and outlet pipe parallel communication, and heat-transfer pipe described in each root is three-decker, and innermost layer is copper, and intermediate layer is alloy aluminium lamination, and outermost layer is electric insulation layer,
Also be provided with small-power pumping installations in described shell, flow for making electric heating furnace inner fluid and accelerate, and
Described Control Component realizes overtemperature protection by the pyrostat be arranged in shell.
2. the electric heating furnace with multiple protection functions according to claim 1, is characterized in that: described many heat-transfer pipes are vertically arranged side by side, and outlet pipe and oral siphon are horizontally set on above and below heat-transfer pipe respectively.
3. the electric heating furnace with multiple protection functions according to claim 1; it is characterized in that: described many heat-transfer pipe horizontal Tiles are arranged; outlet pipe and oral siphon are vertically arranged on the both sides of heat-transfer pipe respectively, and make water inlet be positioned at the lower end of oral siphon, and delivery port is positioned at the upper end of outlet pipe.
4. the electric heating furnace with multiple protection functions according to claim 1, is characterized in that: the quantity of described heating component is three, mutually electrical connection and water route is in parallel between described heating component.
5. the electric heating furnace with multiple protection functions according to claim 1, is characterized in that: described Control Component comprises Time-sharing control button, for carrying out time-division transfer to heat generating component.
6. the electric heating furnace with multiple protection functions according to claim 1, is characterized in that: described Control Component comprises thermostatic control button, controls for realizing constant indoor temperature by means of the temperature sensor be arranged in shell.
7. the electric heating furnace with multiple protection functions according to claim 1, is characterized in that: described Control Component comprises antifreeze button, starts antifreeze operation during for being down to 5 degrees Celsius in environment temperature.
8. the electric heating furnace with multiple protection functions according to claim 1, is characterized in that: the cross section of described heat-transfer pipe is for circular, oval or square.
9. the electric heating furnace with multiple protection functions according to claim 1; it is characterized in that: be also provided with fast installation support; described fast installation support comprises horizontal connection bracket and locating support; connection bracket is used for the fixed arm of connection two longitudinal directions and forms an installation group; locating support is used for multiple installation group to connect location, and each described fixed arm bottom is provided with the gusseted part for supporting described shell.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135512A (en) * | 2015-09-17 | 2015-12-09 | 北京德深电气有限公司 | Heating stove and starting method |
| CN105394797A (en) * | 2015-12-08 | 2016-03-16 | 吉林龙升饲料有限公司 | Forage fermenting apparatus |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135512A (en) * | 2015-09-17 | 2015-12-09 | 北京德深电气有限公司 | Heating stove and starting method |
| CN105394797A (en) * | 2015-12-08 | 2016-03-16 | 吉林龙升饲料有限公司 | Forage fermenting apparatus |
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