CN106440846A - Method for carrying out thermal treatment on two-position type resistance furnace with time relay and resistance furnace - Google Patents
Method for carrying out thermal treatment on two-position type resistance furnace with time relay and resistance furnace Download PDFInfo
- Publication number
- CN106440846A CN106440846A CN201610792927.2A CN201610792927A CN106440846A CN 106440846 A CN106440846 A CN 106440846A CN 201610792927 A CN201610792927 A CN 201610792927A CN 106440846 A CN106440846 A CN 106440846A
- Authority
- CN
- China
- Prior art keywords
- temperature
- time
- formula
- resistance
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/04—Arrangements of indicators or alarms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
Abstract
The invention discloses a method for carrying out thermal treatment on a two-position type resistance furnace with a time relay and the resistance furnace, relates to the two-position type resistance, and aims to solve the over-temperature warning invalidation problem of an existing two-position type temperature-control resistance furnace. Under a no-load condition, the resistance furnace is powered up for a first time and load of the resistance furnace is continuously powered up until the furnace temperature reaches a warning temperature after the furnace temperature is controlled by an original temperature control system to reach a given temperature for a second time. A time length value needed for enabling the furnace temperature to reach the given temperature for a second time until the warning temperature is measured, and the time length value is taken as delay power-on time length of the time relay; a power supply input end of the relay is connected with a power supply line of a power supply input end of resistance furnace load; a power supply output end of the time relay is connected with an acousto-optic warning module; and when single-time power-on time length of the resistance furnace load reaches the time length value, the acousto-optic warning module is powered up to emit sound light. The method and the resistance furnace disclosed by the invention have the advantage of warning when over-temperature occurs. The method is suitable for thermal treatment of the two-position type resistance furnace.
Description
Technical field
The present invention relates to carry out method and this resistance furnace of overtemperature alarm with two the formula resistance furnaces being provided with the time relay,
It is applied to two formula temperature resistance stove fields.
Background technology
Resistance furnace is to utilize electric current to make heating or heating dielectric heat in stove, thus the work that workpiece or material are heated
Industry stove.Resistance furnace is used for heating, metal heat treatmet heating, soldering, powder metallurgy sintered, glass before metal forging in mechanical industry
Glass pottery roasting and the drying etc. of annealing, low-melting-point metal fusing, sand mold and paint film.
Regulation (automatically controlling) mode of resistance furnace furnace temperature typically has three kinds：Two formulas automatically adjust, continuous P ID is adjusted automatically
Joint automatically adjusts with quasi-continuous.The furnace temperature regulative mode of most resistance furnaces of eighties of last century broadly falls into two formulas and automatically adjusts
Joint.At the beginning of this century, the ratio of the resistance furnace of latter two regulative mode is used to increase sharply.Because two formulas
The resistance furnace of self adjusting resistance furnace temperature has simple in construction, low-cost advantage, so being widely used in furnace temperature essence
Spend less demanding metal heat treatmet processing scene.
Two formula resistance furnaces of small-power use individual event alternating current, relatively high power or high-power two formula resistance furnaces to use three-phase
Alternating current.Being provided with three-phase disconnecting link switch on the power supply circuits of the resistance furnace of use three-phase alternating current, each phase is all provided with 1
Heat melting device and 1 contactor；It is provided with single-phase chopper switch, heat melting device on the power supply circuits of the resistance furnace of use single-phase alternating current
And contactor.
Two common formula temperature resistance stoves are made up of body of heater and controlling organization.Load in resistance furnace body of heater is electric heating unit
Part, this heating is usually heating wire or silicon carbide rod, reacts the physical quantity to electric current drag size for these heatings and claims
For resistance.Described controlling organization by thermocouple circuit, compensate the device such as circuit, electron potentiometer and overtemperature alarm and many
Instrument forms, have monitoring resistor stove furnace temperature, control described contactor carry out to described resistance furnace being energized and power-off, detection therefore
The functions such as barrier, Realtime Alerts.The effect of described heat melting device is overcurrent protection.
The regulation of two formula temperature is using the on-off of contactor control main circuit as its basic regulation action, generally
Saying, it is simply that by thermometric instrument control, when stove is warmed up to given temperature, contactor makes main circuit power-off, and stove cools to given temperature
When spending, contactor makes main circuit be energized.With stove initial when temperature less than given temperature, resistance furnace input power is 100% (full work(
Rate energising heats up), when furnace temperature reaches given temperature, contactor makes stove power-off, and stove input power reduces to zero, now, by
Having thermal inertia in stove, after furnace temperature continues to slightly rise one section of temperature, side begins to decline.Furnace temperature drops to given temperature
When, contactor makes again stove be energized, heating with full power stove, now, owing to stove has thermal inertia, under furnace temperature still provides for slightly
Fall, drops to minimum point rear and starts to warm up, the stove power-off again when furnace temperature is raised to given temperature, this moment again because thermal inertia continues
Slightly heat up.Stove is energized so continuously, power-off is alternately gone down, and furnace temperature, centered on set-point, is similar to sinusoidal
Fluctuation and for a long time maintain furnace temperature (mean value) as set-point with the less temperature difference (deviation), until the temperature given value that changes
Instruction occur.It is exactly more than the basic process that two formulas of resistance furnace automatically adjust furnace temperature.Do not send at control temperature controlling system and change
In the case of temperature set point command, if occurring, energising is more than, is necessarily directed at furnace temperature and raises continuously incessantly, exceedes normal temperature control
The phenomenon of scope is exactly overtemperature.
I.e., in the given time, the furnace temperature of resistance furnace be always to maintain (i.e. automatically controlling) processing technology need a certain
Temperature value.Generally this temperature is referred to as " given temperature ", " temperature given value ", " set point of temperature " or " operating temperature ".Resistance
The temperature control of stove is alternatively referred to as " temperature regulation ".Under normal circumstances, when generation resistance furnace live wire phase shortage or fractional load open circuit
When, two Wei Shi Temperature Control of Electric Resistance Furnace mechanisms can detect that fault has occurred and sent sound and light alarm, the power supply cutting off resistance furnace,
I.e. resistance furnace has overtemperature alarm function；But, the multiple electrical part using due to two formula resistance furnace control systems and multiple
Instrument can be affected by factors, thus occur resistance furnace furnace temperature unexpectedly to exceed given temperature and but do not report to the police, also do not have
Having the phenomenon of the power supply cutting off resistance furnace, referred to as overtemperature alarm lost efficacy.If occurring overtemperature alarm to lose efficacy without being found in time
And prevent, it will cause the defective even heated accident that workpiece is scrapped, resistance furnace is burned out of heated workpiece.
Described controlling organization structure is complicated, procedure links is numerous, by affected by many factors during its work, such as：Temperature,
Surge, mechanical damage, vibration and internal fault etc.；If having in controlling organization at one breaks down just may make stove generation overtemperature
Or overtemperature alarm failure of removal.Visible, the intrinsic fragility of the controlling organization of two formula resistance furnaces, is overtemperature or overtemperature alarm loses
Effect existing more than basic reason repeatly.Although contain excess temperature alarm device in controlling organization, but the fault that overtemperature alarm lost efficacy
Happen occasionally.Here it is this patent prevents resistance furnace generation overtemperature or the necessity of overtemperature alarm failure of removal new method.
, load (heating wire or silicon carbide rod) disconnected common cause disconnected with regard to live wire is usually：Heating or wire with
Element joint long-term at high temperature (1200 DEG C～1400 DEG C) is oxidized with air contact, aging and scaling loss, naturally ruin disconnected；Long
Phase at high temperature work picking-up heating abnormity torr brick damaged or aging cause heating deformation, off normal or short circuit；
The fuse go falls within live wire and breaks；The improper stove that such as takes on of manual operation directly hits wiping stove brick or heating, or workpiece and electric heating
Element has the maloperations such as contact that live wire can be caused disconnected or load is disconnected；Between thread heating or element and connecting position of wires weld
It is easily blown if mouth has rosin joint or effective cross section is narrow and small or welding rod material is not good；Elema and other non-metal electric heating elements
Aging and brittle failure.
Content of the invention
The invention aims to solve two formula temperature resistance stove overtemperature alarm Problem of Failure, and then proposition employing sets
Two the formula resistance furnaces having the time relay carry out heat-treating methods and this resistance furnace.
The present invention provides a kind of two formula resistance furnaces being provided with the time relay to carry out the concrete step of heat-treating methods
Suddenly it is：
Step one, the load (5) of two formula temperature resistance stoves is energized for the first time, when the stove of described two formula temperature resistance stoves
After interior temperature reaches given temperature, by temperature control modules control described two formula temperature controls electricity of described two formula temperature resistance stoves
3 contactors (3) in the supply line of the load (5) of resistance stove simultaneously switch off, it is achieved to described two formula temperature resistance stoves
Load (5) power-off, the furnace temperature of this two formula temperature resistance stoves is because thermal inertia may proceed to raise and fall after rise；
Step 2, the delay power duration setting 3 time relays (4) according to the delay time parameter of the time relay
A；The fire line terminal of the power input of 3 described time relays (4) is consecutively connected to respectively two formula temperature resistance stoves
Load (5) three phase mains circuit each phase line on, the zero line of the power input of described 3 time relays (4)
Terminal ground, the power output end of each described time relay (4) connects audible and visual alarm module (7)；Make each institute
State the time relay (4) to start working when the load (5) of two formula temperature resistance stoves is energized；
Step 3, when the furnace temperature of described two formula temperature resistance stoves drops to given temperature, by described two formula temperature controls
Temperature control modules 3 contactors (3) of control of resistance furnace are closed at, and make the load (5) of described two formula temperature resistance stoves
Energising, meanwhile, the described time relay (4) is started working；
Step 4, when the furnace temperature of described two formula temperature resistance stoves reaches given temperature, described two formula temperature resistances
Described 3 contactors (3) of temperature control modules control of stove simultaneously switch off, and described 3 time relays (4) quit work；Institute
State the furnace temperature of two formula temperature resistance stoves because thermal inertia continues to raise and fall after rise；If the furnace temperature of described two formula temperature resistance stoves
When reaching given temperature, (when 3 contactors 3 should disconnect but be not turned off) if described 3 contactors (3) do not disconnect,
Then described 3 time relays (4) work on, when the energization period of arbitrary described time relay (4) reaches in step 2
After the delay power time setting, the acousto-optic that the power output end to the described time relay for this time relay (4) connects is accused
Alert module (7) power supply, makes this audible and visual alarm module (7) send audible and visual alarm；
It step 5, is repeated in step 3 and step 4, until heat treatment process completes；
Wherein, the acquisition methods of the delay time parameter of the time relay described in step 2 is：In the case of full stove, right
The load (5) of described two formula temperature resistance stoves is energized for the first time, when its furnace temperature reaches given temperature for the first time, to described two formulas
Load (5) power-off of temperature resistance stove；When then its furnace temperature falls back to given temperature because thermal inertia continues to raise, to described two
The load (5) of position formula temperature resistance stove is energized and starts timing, and then its furnace temperature goes back up to given temperature because thermal inertia continues to decline
Continue the energising of the load (5) to described two formula temperature resistance stoves, until its furnace temperature reaches to stop timing during alarm temperature when spending
And load (5) power-off to described two formula temperature resistance stoves, obtained timing time length value is the time relay
(4) the delay power duration A setting in；The method is suitable for use with two formula resistance furnaces of three phase mains.Technical staff can root
According to quantity and the material of workpiece to be machined, duration value of powering the time delay of the described time relay is finely adjusted.
A kind of two formula resistance furnaces being provided with the time relay, including 3 phase chopper switchs (1), 3 fuses (2), 3
Contactor (3) load (5) with two formula temperature resistance stoves simultaneously, one end of described 3 phase chopper switchs (1) connects three-phase alternating current
Each phase of power supply；The other end of described 3 phase chopper switchs (1) is sequentially connected with one end of described 3 fuses (2), described 3
The other end of fuse (2) is sequentially connected with one end while described 3 contactor (3)；Another while described 3 contactor (3)
One end is sequentially connected with the power input of the load (5) of described two formula temperature resistance stoves；It described is provided with the two of the time relay
Position formula resistance furnace also includes 3 time relays (4) and 3 audible and visual alarm modules (7), the electricity of described 3 time relays (4)
The fire line terminal of source input is sequentially connected with other end while described 3 contactor (3) respectively；Described 3 time relays
(4) the zero terminal ground connection of power input；The power output end of described 3 time relays (4) is sequentially connected with 3 respectively
Audible and visual alarm module (7).
The invention has the beneficial effects as follows：Owing to the present invention uses technique scheme, make two formula temperature resistance stoves former
Energization period control is added on the basis of having temperature control mechanism, the advantage being provided with two ore control, two formula temperature have been effectively ensured
There is not overtemperature, overtemperature alarm failure accidents do not occur in control resistance furnace, makes the qualification rate of heat treatment process workpiece promote 30%, from
And reach the purpose of the present invention.
Brief description
Fig. 1 is for realizing carrying out the flow chart of heat-treating methods with two the formula resistance furnaces being provided with the time relay.
Fig. 2 is the structural representation of a kind of two formula resistance furnaces being provided with the time relay.
Fig. 3 is the thermal control features curve synoptic diagram of two formula resistance furnaces.
Fig. 4 is the measuring method schematic diagram that two formula resistance furnaces reach alarm temperature required time A.
Detailed description of the invention
Detailed description of the invention one：In conjunction with Fig. 1 to 4, present embodiment being described, the one described in present embodiment is with when being provided with
Between two formula resistance furnaces of relay carry out concretely comprising the following steps of heat-treating methods：
Step one, the load (5) of two formula temperature resistance stoves is energized for the first time, when the stove of described two formula temperature resistance stoves
After interior temperature reaches given temperature, by temperature control modules control described two formula temperature controls electricity of described two formula temperature resistance stoves
3 contactors (3) in the supply line of the load (5) of resistance stove simultaneously switch off, it is achieved to described two formula temperature resistance stoves
Load (5) power-off, the furnace temperature of this two formula temperature resistance stoves is because thermal inertia may proceed to raise and fall after rise；
Step 2, the delay power duration setting 3 time relays (4) according to the delay time parameter of the time relay
A；The fire line terminal of the power input of 3 described time relays (4) is consecutively connected to respectively two formula temperature resistance stoves
Load (5) three phase mains circuit each phase line on, the zero line of the power input of described 3 time relays (4)
Terminal ground, the power output end of each described time relay (4) connects audible and visual alarm module (7)；Make each institute
State the time relay (4) to start working when the load (5) of two formula temperature resistance stoves is energized；
Step 3, when the furnace temperature of described two formula temperature resistance stoves drops to given temperature, by described two formula temperature controls
Temperature control modules 3 contactors (3) of control of resistance furnace are closed at, and make the load (5) of described two formula temperature resistance stoves
Energising, meanwhile, the described time relay (4) is started working；
Step 4, when the furnace temperature of described two formula temperature resistance stoves reaches given temperature, described two formula temperature resistances
Described 3 contactors (3) of temperature control modules control of stove simultaneously switch off, and described 3 time relays (4) quit work；Institute
State the furnace temperature of two formula temperature resistance stoves because thermal inertia continues to raise and fall after rise；If the furnace temperature of described two formula temperature resistance stoves
When reaching given temperature, (when 3 contactors 3 should disconnect but be not turned off) if described 3 contactors (3) do not disconnect,
Then described 3 time relays (4) work on, when the energization period of arbitrary described time relay (4) reaches in step 2
After the delay power time setting, the acousto-optic that the power output end to the described time relay for this time relay (4) connects is accused
Alert module (7) power supply, makes this audible and visual alarm module (7) send audible and visual alarm；
It step 5, is repeated in step 3 and step 4, until heat treatment process completes.
Detailed description of the invention two：In conjunction with Fig. 1 to 4, present embodiment being described, present embodiment is to detailed description of the invention one
Further illustrate, the acquisition methods of the delay time parameter of the time relay described in step 2 is：In the case of full stove, right
The load (5) of described two formula temperature resistance stoves is energized for the first time, when its furnace temperature reaches given temperature for the first time, to described two formulas
Load (5) power-off of temperature resistance stove；When then its furnace temperature falls back to given temperature because thermal inertia continues to raise, to described two
The load (5) of position formula temperature resistance stove is energized and starts timing, and then its furnace temperature goes back up to given temperature because thermal inertia continues to decline
Continue the energising of the load (5) to described two formula temperature resistance stoves, until its furnace temperature reaches to stop timing during alarm temperature when spending
And load (5) power-off to described two formula temperature resistance stoves, obtained timing time length value is the time relay
(4) the delay power duration A setting in；The method is suitable for use with two formula resistance furnaces of three phase mains.Technical staff can root
According to quantity and the material of workpiece to be machined, duration value of powering the time delay of the described time relay is finely adjusted.
Detailed description of the invention three：In conjunction with Fig. 2 to 4, present embodiment being described, the one described in present embodiment is provided with the time
Two formula resistance furnaces of relay, including 3 phase chopper switchs (1), 3 fuses (2), 3 contactors (3) are simultaneously and two formulas
The load (5) of temperature resistance stove, one end of described 3 phase chopper switchs (1) connects each phase of three-phase alternating-current supply；Described 3 phases
The other end of chopper switch (1) is sequentially connected with one end of described 3 fuses (2), and the other end of described 3 fuses (2) depends on
One end while secondary connection described 3 contactor (3)；Other end while described 3 contactor (3) is sequentially connected with described two
The power input of the load (5) of formula temperature resistance stove；When described two the formula resistance furnaces being provided with the time relay also include 3
Between relay (4) and 3 audible and visual alarm modules (7), the fire line terminal of the power input of described 3 time relays (4) divides
It is not sequentially connected with other end while described 3 contactor (3)；The zero line of the power input of described 3 time relays (4)
Terminal ground；The power output end of described 3 time relays (4) is sequentially connected with 3 audible and visual alarm modules (7) respectively.
Claims (3)
1. carry out heat-treating methods with two the formula resistance furnaces being provided with the time relay, it is characterised in that the method concrete
Step is：
Step one, the load (5) of two formula temperature resistance stoves is energized for the first time, when temperature in the stove of described two formula temperature resistance stoves
After degree reaches given temperature, by described two the formula temperature resistance stoves of temperature control modules control of described two formula temperature resistance stoves
Load (5) supply line on 3 contactors (3) simultaneously switch off, it is achieved the load to described two formula temperature resistance stoves
(5) power-off, the furnace temperature of this two formula temperature resistance stoves is because thermal inertia may proceed to raise and fall after rise；
Step 2, the delay power duration A setting 3 time relays (4) according to the delay time parameter of the time relay；Will
The fire line terminal of the power input of 3 described time relays (4) is consecutively connected to the negative of two formula temperature resistance stoves respectively
On each phase line of the three phase mains circuit carrying (5), the zero terminal of the power input of described 3 time relays (4)
Ground connection, the power output end of each described time relay (4) connects audible and visual alarm module (7)；When making each described
Between relay (4) two formula temperature resistance stoves load (5) be energized when start working；
Step 3, when the furnace temperature of described two formula temperature resistance stoves drops to given temperature, by described two formula temperature resistances
Temperature control modules 3 contactors (3) of control of stove are closed at, and make the load (5) of described two formula temperature resistance stoves be energized,
Meanwhile, the described time relay (4) is started working；
Step 4, when the furnace temperature of described two formula temperature resistance stoves reaches given temperature, described two formula temperature resistance stoves
Described 3 contactors (3) of temperature control modules control simultaneously switch off, and described 3 time relays (4) quit work；Described two
The furnace temperature of position formula temperature resistance stove is because thermal inertia continues to raise and fall after rise；If the furnace temperature of described two formula temperature resistance stoves reaches
During given temperature, if described 3 contactors (3) do not disconnect, then described 3 time relays (4) work on, when arbitrary institute
After the delay power time that the energization period stating the time relay (4) reaches setting in step 2, this time relay (4) is to institute
State audible and visual alarm module (7) power supply that the power output end of the time relay connects, make this audible and visual alarm module (7) send acousto-optic
Alarm；
It step 5, is repeated in step 3 and step 4, until heat treatment process completes.
2. two the formula resistance furnaces being provided with the time relay according to claim 1 carry out heat-treating methods, and it is special
Levying and being, the acquisition methods of the delay time parameter of the time relay described in step 2 is：In the case of full stove, to described two
The load (5) of position formula temperature resistance stove is energized for the first time, when its furnace temperature reaches given temperature for the first time, to described two formula temperature controls electricity
Load (5) power-off of resistance stove；When then its furnace temperature falls back to given temperature because thermal inertia continues to raise, to described two formula temperature
The load (5) of control resistance furnace is energized and starts timing, and its furnace temperature is because continuing when thermal inertia continues and declines and then go back up to given temperature
Continuous load (5) energising to described two formula temperature resistance stoves, until its furnace temperature reaches to stop timing during alarm temperature and to institute
Stating load (5) power-off of two formula temperature resistance stoves, obtained timing time length value is in the time relay (4) and sets
Fixed delay power duration A；The method is suitable for use with two formula resistance furnaces of three phase mains.
3. be provided with two formula resistance furnaces of the time relay, including 3 phase chopper switchs (1), 3 fuses (2), 3 connect
Tentaculum (3) load (5) with two formula temperature resistance stoves simultaneously, one end of described 3 phase chopper switchs (1) connects three-phase alternating current
Each phase in source；The other end of described 3 phase chopper switchs (1) is sequentially connected with one end of described 3 fuses (2), and described 3 melt
The other end of disconnected device (2) is sequentially connected with one end while described 3 contactor (3)；Another while described 3 contactor (3)
End is sequentially connected with the power input of the load (5) of described two formula temperature resistance stoves；It is characterized in that, described be provided with the time and continue
Two formula resistance furnaces of electrical equipment also include 3 time relays (4) and 3 audible and visual alarm modules (7), described 3 time relays
The fire line terminal of the power input of device (4) is sequentially connected with other end while described 3 contactor (3) respectively；When described 3
Between relay (4) power input zero terminal ground connection；The power output end of described 3 time relays (4) depends on respectively
3 audible and visual alarm modules (7) of secondary connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610792927.2A CN106440846B (en) | 2016-08-31 | 2016-08-31 | Heat-treating methods and the resistance furnace are carried out with two formula resistance furnaces equipped with the time relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610792927.2A CN106440846B (en) | 2016-08-31 | 2016-08-31 | Heat-treating methods and the resistance furnace are carried out with two formula resistance furnaces equipped with the time relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106440846A true CN106440846A (en) | 2017-02-22 |
| CN106440846B CN106440846B (en) | 2018-07-27 |
Family
ID=58164756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610792927.2A Active CN106440846B (en) | 2016-08-31 | 2016-08-31 | Heat-treating methods and the resistance furnace are carried out with two formula resistance furnaces equipped with the time relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106440846B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1694507A1 (en) * | 1989-08-15 | 1991-11-30 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт По Автоматизации Предприятий Промышленности Строительных Материалов | Method for control of calcination process in rotary kiln |
| CN2099946U (en) * | 1991-05-16 | 1992-03-25 | 张剑 | Constant temp. delay automatic control box type high temp. electric stove |
| CN201238404Y (en) * | 2008-06-05 | 2009-05-13 | 南京汽车锻造有限公司 | Time control apparatus for electrical heating temperature |
| CN204987887U (en) * | 2015-08-24 | 2016-01-20 | 韶关市德丰机械有限公司 | Stable form heating furnace control by temperature change circuit |
-
2016
- 2016-08-31 CN CN201610792927.2A patent/CN106440846B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1694507A1 (en) * | 1989-08-15 | 1991-11-30 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт По Автоматизации Предприятий Промышленности Строительных Материалов | Method for control of calcination process in rotary kiln |
| CN2099946U (en) * | 1991-05-16 | 1992-03-25 | 张剑 | Constant temp. delay automatic control box type high temp. electric stove |
| CN201238404Y (en) * | 2008-06-05 | 2009-05-13 | 南京汽车锻造有限公司 | Time control apparatus for electrical heating temperature |
| CN204987887U (en) * | 2015-08-24 | 2016-01-20 | 韶关市德丰机械有限公司 | Stable form heating furnace control by temperature change circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106440846B (en) | 2018-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105357780B (en) | A kind of PTC electric heater dry combustion method guard method and device and household electrical appliance | |
| CN106211395A (en) | The method for heating and controlling of electromagnetic heater | |
| CN102598183A (en) | Electric circuit connected to thermal switch with three terminals, and method of connecting same | |
| CN206379321U (en) | A kind of controlled fuse of multiple spot temperature detection | |
| CN204305376U (en) | A kind of PTC electric heater | |
| CN106440846B (en) | Heat-treating methods and the resistance furnace are carried out with two formula resistance furnaces equipped with the time relay | |
| CN102253677A (en) | Constant temperature control system used for heating of heat treatment device | |
| JP4426155B2 (en) | Heating device | |
| JP2007519166A5 (en) | ||
| CN215420810U (en) | Electric heater for lubricating oil circuit of bearing test | |
| CN208195881U (en) | A kind of electric iron | |
| CN204348635U (en) | A kind of adjustable overcurrent non-electricity protector | |
| CN102255289A (en) | Thyristor alternating current power regulator control system and application thereof in electrical heating temperature control | |
| CN203263009U (en) | Electric heating cooking utensil | |
| CN110912838B (en) | Switch with heating function | |
| CN209525603U (en) | A kind of dual temperature controlling temperature controller | |
| CN207778705U (en) | Air-conditioning system and its anti-control device on fire | |
| CN1838840A (en) | Power expansion electrical heating method and apparatus based on positive temperature coefficient device | |
| CN220122613U (en) | Protection circuit for electric heater and power regulating cabinet of air separation device | |
| CN201892882U (en) | Constant-temperature control system for heating heat-treatment equipment | |
| CN109947153A (en) | A kind of dual temperature controlling temperature controller | |
| CN219073414U (en) | Maintenance system for hand spray gun | |
| JP2004334623A (en) | Temperature controller | |
| CN207926164U (en) | A kind of welding rod or solder flux baking oven overtemperature protection device | |
| CN202166868U (en) | Thyristor alternating-current power regulator control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221230 Address after: 150000 building 3, high tech production base, Nangang District, Harbin City, Heilongjiang Province Patentee after: HARBIN TURBINE Co.,Ltd. Patentee after: HADIAN POWER EQUIPMENT NATIONAL ENGINEERING RESEARCH CENTER CO.,LTD. Address before: 150046 No. three power road 345, Xiangfang District, Heilongjiang, Harbin Patentee before: HARBIN TURBINE Co.,Ltd. |
|
| TR01 | Transfer of patent right |