CN208433794U - A kind of power supply system of baking oven, warning device and warning device - Google Patents
A kind of power supply system of baking oven, warning device and warning device Download PDFInfo
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- CN208433794U CN208433794U CN201821184436.0U CN201821184436U CN208433794U CN 208433794 U CN208433794 U CN 208433794U CN 201821184436 U CN201821184436 U CN 201821184436U CN 208433794 U CN208433794 U CN 208433794U
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Abstract
The utility model discloses the power supply systems of a kind of baking oven, warning device and warning device, and including the alternating current conversion module for alternating current to be converted into direct current, the output end of alternating current conversion module also constitutes the output end of power supply system；Further include: the output end of battery, anode and alternating current conversion module is coupled, and cathode is coupled to ground；First electromagnetic switch, control loop is connected between the output end and ground of alternating current conversion module, by control return circuit coupling on the major loop that is connected with the output end of alternating current conversion module of anode of battery, and when control loop obtains electric, is in closed state by control loop when being in open-circuit condition, control loop power loss by control loop；With anti-overcharge charging module, it is used for when alternating current is normal to charge the battery.Continued power is remained within a certain period of time after alternating current power-off.
Description
Technical field
The utility model relates to chemicals to bake apparatus field more particularly to a kind of baking oven, warning device and alarm dress
The power supply system set.
Background technique
Baking oven is usually used in the baking of chemical products, is equipment indispensable in the daily production of chemical field or test.
In order to guarantee the test level of the quality of production or pinpoint accuracy, certain chemicals have higher want for baking technique
It asks, during baking, may be baked under the conditions of different periods may require that in different temperature, and must essence to baked temperature
Really control, and possible baking time is also longer.It, can if temperature exceeds allowed band during dangerous chemicals is baked
Product quality can be influenced, temperature is excessively high possibly even to be will lead to dangerous chemicals generation chemical reaction and cause safety accident, is deposited
In potential risks.Therefore, when using baking oven, it is often necessary to it assigns professional on duty, monitors baking oven operating condition, to prevent
The generation of contingency.
To solve the above problems, existing solution is as follows, as shown in Figure 1, temperature sensor is set in oven interior,
Common temperature sensor is thermocouple 1, and temperature sensor detects the temperature change in baking oven and is converted into electric signal and is uploaded to
Intelligent temperature controller 2, intelligent temperature controller 2 judge whether oven temperature is normal, driving and intelligent temperature if temperature is abnormal
The acoustic-optic alarm 3 for controlling the coupling of 2 phase of instrument is alarmed.
Although above-mentioned solution can effectively remind duty personnel's temperature anomaly event, however, there remains staff
It is on duty for a long time, if duty personnel is because thing is temporarily from when occurring abnormal in the meantime, even if acoustic-optic alarm alarm, relevant people
Member is also unable to learn in time its unexpected message.And when accident power-off occurs, acoustic-optic alarm also inevitable power loss, if people on duty
Member fail to find in time, the baked temperature in baking oven will necessarily be gradually reduced, influence produce product the quality of production or test sample
The test result of product.
Utility model content
The first of the utility model is designed to provide a kind of power supply system of warning device, it is intended to solve to power off when alternating current
When can continue for being provided out electric energy in certain time.
The above-mentioned purpose of the utility model has the technical scheme that
A kind of power supply system of warning device, it is described including the alternating current conversion module for alternating current to be converted into direct current
The output end of alternating current conversion module also constitutes the output end of the power supply system；Further include: battery, it is positive to turn with the alternating current
The output end of mold changing block is coupled, and cathode is coupled to ground；First electromagnetic switch, control loop are connected on the alternating current conversion module
Output end and ground between, by control return circuit coupling the battery anode and the alternating current conversion module output end phase
On the major loop of connection, and when control loop obtains electric is in open-circuit condition, control loop power loss by control loop, is controlled back
Road is in closed state；With anti-overcharge charging module, it is used to charge when alternating current is normal for the battery；It is described anti-overcharge to fill
Electric module includes detection circuit, and input terminal is coupled to the anode of the battery, detects that the end voltage of the battery is less than
The voltage rating of the battery then exports Continuity signal from its output end, and it is described to detect that the end voltage of the battery is greater than
The voltage rating of battery then exports pick-off signal from its output end；Execution circuit is coupled to the output end of the detection circuit,
The output end of anode and the alternating current conversion module that the battery is controlled when receiving Continuity signal, which is conducted, takes electricity to fill
Electricity, the output end that the battery and the alternating current conversion module are controlled when receiving pick-off signal mutually end power loss stopping and fill
Electricity.
Implement above-mentioned technical proposal:
When alternating current is normal, alternating current is converted direct current by alternating current conversion module, and output power supply outward, the first electromagnetic switch
Control loop obtain it is electric open-circuit condition is in by control loop, cut off between battery and the output end of power supply system at this time not to
Outer power supply.Meanwhile in anti-overcharge charging module detection circuit detection battery end voltage and with battery voltage rating phase
Compare, judge whether the electricity of battery is in Full Power State, when battery end voltage be less than battery voltage rating,
Determine that the electricity of battery is not in Full Power State, detection circuit exports Continuity signal from output end, and execution circuit is connecing
After receiving Continuity signal, control battery starts to take electric charging, and in charging process, and detection circuit is still to the end electricity of battery
Pressure is detected and is judged the electricity of battery, until determining that the end voltage of battery is determined greater than the voltage rating of battery
The electricity of battery has been filled with, and detection circuit exports pick-off signal, and execution circuit controls electric power storage after receiving pick-off signal
Pond power loss stops charging.
When alternating current power-off, the control loop power loss of the first electromagnetic switch is in closed state by control loop, stores at this time
Battery is outward for electricity output.So that warning device still can work a period of time when alternating current powers off.The confession of this warning device
Electric system can match with alternating current, can continue for being provided out electric energy within a certain period of time after alternating current power-off.
Further, the detection circuit includes reference voltage circuit, for exporting preset reference voltage from its output end；
Comparator, inverting input terminal are coupled to the anode of the battery, and non-inverting input terminal is coupled to the output end of reference voltage circuit；
With the second electromagnetic switch, control loop is connected between the output end and ground of the alternating current conversion module, by control return circuit coupling
On the circuit that is connected with the inverting input terminal of the comparator of anode of the battery, and when control loop obtains electric, is controlled
Open-circuit condition is in by control loop when circuit processed is in closed state, control loop power loss.
As the improvement of the technical program, the reference voltage circuit is set as being series at the defeated of the alternating current conversion module
Bleeder circuit between outlet and ground, the intermediate node of the bleeder circuit constitute the output end of the reference voltage circuit.
It include the Voltage stabilizing module for stable reference voltage as the improvement of the technical program, in the bleeder circuit.
Preferably, the Voltage stabilizing module includes switching diode, and anode is coupled to the output end of the reference voltage circuit；
And zener diode, cathode are coupled to the cathode of the switching diode, plus earth.
Further, the execution circuit includes third electromagnetic switch and switching device；The control of the third electromagnetic switch
Circuit and the switching device are series between the output end and ground of the alternating current conversion module, the quilt of the third electromagnetic switch
The output end of the input terminal of control loop and the alternating current conversion module couples, the third electromagnetic switch by control loop
The anode of output end and the battery couples；The control terminal of the switching device couples the output end of the comparator；Response
It is connected in Continuity signal, the control loop of the third electromagnetic switch obtains electric drive and is connected by control loop；Believe in response to closing
Number cut-off, the control loop power loss of the third electromagnetic switch drives by control loop cutoff.
Further, the alternating current conversion module includes AC transformer, for carrying out decompression processing to alternating current；Rectifier bridge
Heap couples the output end of the AC transformer, for continuing rectification processing after handling alternating current decompression；And filter capacitor, string
It is coupled between the output end and ground of the rectifier bridge stack, for continuing to be filtered to the processing of alternating current step-down rectifier；Wherein, described
The intermediate node on main road that the output end of filter capacitor and the rectifier bridge stack mutually couples constitutes the alternating current conversion module
Output end.
The second of the utility model is designed to provide a kind of warning device, can match with alternating current, when alternating current power-off
Timely warning reminding staff.
The above-mentioned purpose of the utility model has the technical scheme that
A kind of warning device, including the temperature-detecting device for detecting temperature；For detecting the whether normal city of alternating current
Electric detection means；With telephone alarming device, the output end of above-mentioned power supply system is weighed in voltage input end coupling, and signal input part is same
When couple the output end of the temperature-detecting device and the output end of city's electric detection means.
Implement above-mentioned technical proposal:
When temperature-detecting device detects temperature anomaly or alternating current powers off suddenly, abnormal signal is inputted into telephone alarming
Device, telephone alarming device dialing alarm page multiple groups number, remind multiple staff's emergency processings in time.Alarm assembling device
It can match with alternating current, and remain to continue working within a certain period of time after alternating current power-off.
The third of the utility model is designed to provide a kind of baking oven, the timely warning reminding work people when alternating current power-off
Member.
The above-mentioned purpose of the utility model has the technical scheme that
A kind of baking oven, including above-mentioned warning device.
After alternating current power-off, baking oven loses electric energy and cannot work on, and warning device can remind staff to make in time
Emergency processing, to reduce loss.
In conclusion the utility model has the following beneficial effects:
One, alarm assembling device can match with alternating current, and remain to continue working within a certain period of time after alternating current power-off；
Two, after alternating current powers off, baking oven loses electric energy and cannot work on, and warning device can remind staff to make in time
Emergency processing out, to reduce loss.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the prior art；
Fig. 2 is the circuit diagram of the utility model embodiment one；
Fig. 3 is the circuit diagram of the utility model embodiment two.
Appended drawing reference: 1, thermocouple；2, intelligent temperature controller；21, combined aural and visual alarm；3, alternating current conversion module；4, anti-mistake
Fill charging module；41, reference voltage circuit；5, telephone alarming device.
Specific embodiment
In the following detailed description, many details are proposed, in order to the comprehensive understanding to the utility model.But
It is, it will be apparent to those skilled in the art that the utility model can not need one in these details
Implement in the case where a little details.Below the description of embodiment is used for the purpose of providing by showing the example of the utility model
The utility model is more fully understood.
Below in conjunction with attached drawing, the technical solution of the utility model embodiment is described.
Embodiment one
As shown in Fig. 2, a kind of power supply system of warning device, including alternating current conversion module 3, battery E, the first electromagnetism are opened
It closes, anti-overcharge charging module 4.
Alternating current conversion module 3 is used to alternating current being converted into direct current, including AC transformer CT, rectifier bridge stack UR and filtering
Capacitor C1.
The input terminal of the output end coupling rectifier bridge stack UR of AC transformer CT.In the present embodiment, rectifier bridge stack UR is used
Full-bridge rectification.
Alternating current is defeated from the output end of AC transformer CT after decompression is handled by inputting from the input terminal of AC transformer CT
Out, it then inputs from the input terminal of rectifier bridge stack UR, is exported after rectified from the output end of rectifier bridge stack UR.
Filter capacitor C1 is connected between the output end and ground of rectifier bridge stack UR.The electric current of rectifier bridge stack UR output is continued
It is filtered.
Wherein, the intermediate node on the main road that the output end of filter capacitor C1 and rectifier bridge stack UR mutually couples constitutes alternating current and turns
Change the mold the output end of block 3.The output end of alternating current conversion module 3 also constitutes the output end of power supply system.
The anode of battery E and the output end of alternating current conversion module 3 are coupled, and cathode with being coupled to, in the present embodiment, is adopted
With its voltage rating battery E equal with the voltage value that alternating current conversion module 3 exports.
In the present embodiment, the first electromagnetic switch, which uses, has double-contact electromagnetic relay KA1.First electromagnetic switch
Control loop (i.e. the coil of relay KA1) is connected between the output end and ground of alternating current conversion module 3, by control return circuit coupling
On the major loop that is connected with the output end of alternating current conversion module 3 of anode of battery E, and when control loop obtains electric, is controlled
Closed state (the KA1 normally opened contact of relay is in by control loop when circuit is in open-circuit condition, control loop power loss
K1-2 is hanging, normally-closed contact K1-1 is connected on the anode of battery E and the circuit of 3 phase of alternating current conversion module coupling).
Anti-overcharge charging module 4 is used to charge when alternating current is normal for battery E, and detects electric power storage during the charging process
The voltage value of pond E determines and stops charging when the electricity of battery E fills with to prevent from overcharging.Anti-overcharge charging module 4 wraps
Include detection circuit and execution circuit.
When alternating current is normal, detection circuit detects that the end voltage of battery E is then defeated from its less than the voltage rating of battery E
Outlet exports Continuity signal, detects that voltage rating of the end voltage greater than battery E of battery E is then cut from the output of its output end
Stop signal.Execution circuit is coupled to the output end of detection circuit, and anode and the city of battery E are controlled when receiving Continuity signal
The output end of electric conversion module 3, which is conducted, takes electric charging, and battery E and alternating current conversion module are controlled when receiving pick-off signal
3 output end mutually ends power loss and stops charging.
Detection circuit includes reference voltage circuit 41, comparator A and the second electromagnetic switch.
Reference voltage circuit 41 is used to export preset reference voltage from its output end, it is preferable that reference voltage circuit 41
It is set as the bleeder circuit being series between the output end and ground of alternating current conversion module 3, the intermediate node of bleeder circuit constitutes base
The output end of quasi- potential circuit 41, so that the reference voltage that reference voltage circuit 41 exports is equal with the voltage rating of battery E.
It include the Voltage stabilizing module for stable reference voltage, including switching diode D1 and zener diode D2 in bleeder circuit.Switch
The anode of diode D1 is coupled to the output end of reference voltage circuit 41, and the cathode of zener diode D2 is coupled to switching diode
The cathode of D1, plus earth.
The inverting input terminal of comparator A constitutes the input terminal of detection circuit and couples the anode of battery E, non-inverting input terminal
It is coupled to the output end of reference voltage circuit 41.
In the present embodiment, the second electromagnetic switch uses the electromagnetic relay KA2 of single-tap head open in usual.Second electromagnetic switch
Control loop (i.e. the coil of relay KA2) be connected between the output end and ground of alternating current conversion module 3, by control loop coupling
It closes on the circuit that is connected with the inverting input terminal of comparator A of anode of battery E, and when control loop obtains electric is controlled back
Open-circuit condition (the normally opened contact K2 string of relay KA2 is in by control loop when road is in closed state, control loop power loss
It is associated on the positive circuit being connected with the inverting input terminal of comparator A of battery E).
Execution circuit includes third electromagnetic switch and switching device.
In the present embodiment, third electromagnetic switch uses the electromagnetic relay KA3 of single-tap head open in usual, and switching device uses
Triode Q1.
The base stage (i.e. the control terminal of switching device) of triode Q1 is coupled to the output end of comparator A, third by resistance
The control loop (i.e. the coil of relay KA3) of electromagnetic switch is series at the output end of alternating current conversion module 3 with triode Q1's
Between collector, the emitter of triode Q1 is grounded.
The input terminal and alternating current modulus of conversion by control loop (i.e. the normally opened contact K3 of relay KA3) of third electromagnetic switch
The output end of block 3 couples, the output end (i.e. the normally opened contact K3 of relay KA3) and storage by control loop of third electromagnetic switch
The anode coupling of battery.
When alternating current is normal, alternating current is converted into direct current by alternating current conversion module 3, and output power supply outward, the first electromagnetism
The control loop of switch obtain it is electric open-circuit condition is in by control loop, i.e. the normally opened contact K1-2 closure of relay KA1, normally closed touching
Point K1-1 is disconnected, and cuts off between battery E and the output end of power supply system do not power outward at this time.Meanwhile anti-overcharge charging mould
Block 4 is started to work, wherein detection circuit detects the end voltage of battery E and compared with the voltage rating of battery E, judgement
Whether the electricity of battery E is in Full Power State, that is, the end voltage of battery E inputs ratio from the inverting input terminal of comparator A
Compared with device and compared with reference voltage, when voltage rating of the end voltage of battery E less than battery E, that is, determine battery E's
Electricity is not in Full Power State, and detection circuit exports Continuity signal from output end, that is, comparator A exports high level, triode
Q1 responds high level conducting, and the coil of relay KA3 obtains electric so that normally opened contact K3 is closed, and battery E starts to take electric charging,
And in charging process, detection circuit is still detected and is judged the electricity of battery E to the end voltage of battery E, until really
The end voltage for determining battery E is greater than the voltage rating of battery E, i.e., relatively determines that the end voltage of battery E is greater than through comparator A
Reference voltage determines that the electricity of battery E has been filled with, detection circuit i.e. output pick-off signal, that is, comparator E output low level, three
Pole pipe Q1 responds low level cut-off, and the coil losing electricity normally opened contact K3 of relay KA3 is disconnected, and battery E is not recharged, to prevent
Only overcharge.
When alternating current power-off, the control loop power loss of the first electromagnetic switch is in closed state, i.e. relay by control loop
The normally opened contact K1-2 of device KA1 is disconnected, normally-closed contact K1-1 is closed, and battery E is outward for electricity output at this time.After alternating current power-off
It still can be provided out electric energy within a certain period of time.
Embodiment two
As shown in figure 3, a kind of warning device, including the temperature-detecting device for detecting temperature；It is for detecting alternating current
No normal city's electric detection means；With telephone alarming device 5.
Wherein, the voltage input end of telephone alarming device 5 is coupled to the power supply system of the warning device of the record of embodiment one
Output end.
Temperature-detecting device includes thermocouple 1, intelligent temperature controller 2, single-tap head electromagnetic relay KA5 open in usual.
Thermocouple 1 and the input terminal of intelligent temperature controller 2 are coupled, and the coil of relay KA5 is connected on intelligent temperature controller
Between the output end and ground of table 2, the normally opened contact K5-1 of relay KA5 is coupled to the signal input circuit of telephone alarming device 5.
Thermocouple 1 detects temperature change, and temperature change is converted into electric signal and is uploaded to intelligent temperature controller 2, intelligence
Temperature control instrument 2 judges whether oven temperature is normal, and the output voltage if temperature is abnormal, the coil of relay KA5 obtains electric suction
Draw normally opened contact K5-1 closure, drive 5 dialing alarm of telephone alarming device, pages multiple groups number, remind multiple work people in time
Member's emergency processing.
City's electric detection means includes A.C. contactor KA4, and the coil of A.C. contactor is arranged in series on alternating current main road, often
Open that contact K4-2 is hanging, normally-closed contact K4-1 is coupled to the signal input circuit of telephone alarming device 5.
When alternating current is normal, the coil of A.C. contactor KA4 obtains electric, and normally opened contact K4-2 closure is hanging, normally-closed contact K4-
1 disconnects, and when alternating current power-off, warning device is powered by the battery E in power supply system, while the coil of A.C. contactor KA4
Power loss, normally opened contact K4-2 are disconnected, and normally-closed contact K4-1 closure drives 5 dialing alarm of telephone alarming device.
Embodiment three
A kind of baking oven, the warning device recorded including embodiment two.
Wherein, alarm assembling device can match with alternating current, and remain to continue working within a certain period of time after alternating current power-off.
After alternating current power-off, baking oven loses electric energy and cannot work on, and warning device can remind staff to make emergency processing in time,
To reduce loss.
Above embodiments are only to illustrate the technical solution of the utility model, rather than carry out to the protection scope of utility model
Limitation.Obviously, described embodiment is only the utility model section Example, rather than whole embodiments.Based on these
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the utility model scope of the claimed.
Although the utility model is described in detail referring to above-described embodiment, those of ordinary skill in the art are still
Can it is according to circumstances mutual to the feature in various embodiments of the utility model that creative work not be made in the absence of conflict
Other adjustment are made in combination, additions and deletions, to obtain different, essence without departing from the other technologies side of the design of the utility model
Case, these technical solutions similarly belong to the utility model scope of the claimed.
Claims (9)
1. a kind of power supply system of warning device, comprising:
For alternating current to be converted into the alternating current conversion module of direct current, the output end of the alternating current conversion module also constitutes the confession
The output end of electric system；
It is characterized by further comprising:
Battery, the positive output end with the alternating current conversion module are coupled, and cathode is coupled to ground；
First electromagnetic switch, control loop is connected between the output end and ground of the alternating current conversion module, by control loop coupling
Close on the major loop that is connected with the output end of the alternating current conversion module of anode of the battery, and control loop obtain it is electric
When closed state is in by control loop when being in open-circuit condition, control loop power loss by control loop；With
Anti-overcharge charging module, for charging when alternating current is normal for the battery；
The anti-overcharge charging module includes
Detection circuit, input terminal are coupled to the anode of the battery, detect that the end voltage of the battery is less than the storage
The voltage rating of battery then exports Continuity signal from its output end, detects that the end voltage of the battery is greater than the battery
Voltage rating then from its output end export pick-off signal；
Execution circuit, is coupled to the output end of the detection circuit, and the battery is being controlled when receiving Continuity signal just
The output end of pole and the alternating current conversion module, which is conducted, takes electric charging, controlled when receiving pick-off signal the battery with
The output end of the alternating current conversion module mutually ends power loss and stops charging.
2. the power supply system of warning device according to claim 1, which is characterized in that the detection circuit includes
Reference voltage circuit, for exporting preset reference voltage from its output end；
Comparator, inverting input terminal are coupled to the anode of the battery, and non-inverting input terminal is coupled to the defeated of reference voltage circuit
Outlet；With
Second electromagnetic switch, control loop is connected between the output end and ground of the alternating current conversion module, by control loop coupling
It closes on the circuit that is connected with the inverting input terminal of the comparator of anode of the battery, and quilt when control loop obtains electric
Open-circuit condition is in by control loop when control loop is in closed state, control loop power loss.
3. the power supply system of warning device according to claim 2, which is characterized in that the reference voltage circuit is set as
The intermediate node of the bleeder circuit being series between the output end and ground of the alternating current conversion module, the bleeder circuit constitutes institute
State the output end of reference voltage circuit.
4. the power supply system of warning device according to claim 3, which is characterized in that include in the bleeder circuit
Voltage stabilizing module for stable reference voltage.
5. the power supply system of warning device according to claim 4, which is characterized in that the Voltage stabilizing module includes
Switching diode, anode are coupled to the output end of the reference voltage circuit；With
Zener diode, cathode are coupled to the cathode of the switching diode, plus earth.
6. according to the power supply system of warning device described in claim 2 to 5 any one, which is characterized in that described to execute electricity
Road includes
Third electromagnetic switch and switching device；
The control loop of the third electromagnetic switch and the switching device be series at the output end of the alternating current conversion module with
Between ground, the output end of the input terminal and the alternating current conversion module by control loop of the third electromagnetic switch is coupled, institute
The anode for stating the output end and the battery by control loop of third electromagnetic switch couples；
The control terminal of the switching device couples the output end of the comparator；It is connected in response to Continuity signal, the third electricity
The control loop of magnetic switch obtains electric drive and is connected by control loop；End in response to shutdown signal, the third electromagnetic switch
Control loop power loss drives by control loop cutoff.
7. the power supply system of warning device according to claim 1, which is characterized in that the alternating current conversion module includes
AC transformer, for carrying out decompression processing to alternating current；
Rectifier bridge stack couples the output end of the AC transformer, for continuing rectification processing after handling alternating current decompression；With
Filter capacitor is series between the output end and ground of the rectifier bridge stack, for continuing to filter to the processing of alternating current step-down rectifier
Wave processing；
Wherein, the intermediate node on the main road that the output end of the filter capacitor and the rectifier bridge stack mutually couples constitutes the city
The output end of electric conversion module.
8. a kind of warning device, which is characterized in that including
For detecting the temperature-detecting device of temperature；
For detecting the whether normal city's electric detection means of alternating current；With
Telephone alarming device, voltage input end couple the output end of power supply system described in claim 1 to 7 any one, letter
Number input terminal couples the output end of the temperature-detecting device and the output end of city's electric detection means simultaneously.
9. a kind of baking oven, which is characterized in that including warning device according to any one of claims 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821184436.0U CN208433794U (en) | 2018-07-25 | 2018-07-25 | A kind of power supply system of baking oven, warning device and warning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821184436.0U CN208433794U (en) | 2018-07-25 | 2018-07-25 | A kind of power supply system of baking oven, warning device and warning device |
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| CN208433794U true CN208433794U (en) | 2019-01-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943519A (en) * | 2019-06-10 | 2020-03-31 | 中铁九局集团电务工程有限公司 | Device for obtaining electric energy by using alternating magnetic field |
-
2018
- 2018-07-25 CN CN201821184436.0U patent/CN208433794U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943519A (en) * | 2019-06-10 | 2020-03-31 | 中铁九局集团电务工程有限公司 | Device for obtaining electric energy by using alternating magnetic field |
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