CN102882186A - Novel temperature sensing type air current switch - Google Patents
Novel temperature sensing type air current switch Download PDFInfo
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- CN102882186A CN102882186A CN2012104216468A CN201210421646A CN102882186A CN 102882186 A CN102882186 A CN 102882186A CN 2012104216468 A CN2012104216468 A CN 2012104216468A CN 201210421646 A CN201210421646 A CN 201210421646A CN 102882186 A CN102882186 A CN 102882186A
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Abstract
The invention discloses a novel temperature sensing type air current switch. The temperature sensing type air current switch is fixed in an air channel of a DC (direct current) motor and connected with a relay and a main control circuit of the DC motor; and the temperature sensing type air current switch comprises a heating body and a temperature control switch which is connected with the heating body and used for detecting the temperature change of the heating body. The temperature sensing type air current switch disclosed by the invention can prevent the DC motor from being burnt out.
Description
Technical field
The present invention relates to the distinguished and admirable switch of a kind of novel temp sensing type.
Background technology
In modern industry is used, the effect of direct current machine is that direct current energy is converted to mechanical energy, the advantages such as DC motor has that good speed adjustment features, starting torque are large, the linearity high overload multiple of mechanical property and governor control characteristics is large, control performance is good, require higher place at speed adjusting performance, all used widely.
Direct current machine is comprised of excitation, armature, commutator, produces a large amount of heats during the work of excitation, armature, needs blower fan air blast cooling, if excitation can not get cooling, can burn because excess Temperature causes, and makes direct current machine produce " driving " phenomenon and damages.Thereby blower fan is one of key of direct current machine steady running.The thin manufacturer that sees present domestic direct current machine does not all have this is added safeguard measure.So malfunctioning because of blower fan, excitation is burnt becomes one of major failure of direct current machine damage.
Summary of the invention
The purpose of this invention is to provide the distinguished and admirable switch of a kind of novel temp sensing type, can protect direct current machine to make it avoid being burnt.
For achieving the above object, the invention provides the distinguished and admirable switch of a kind of novel temp sensing type, the distinguished and admirable switch of described temp sensing type is fixed in the air channel of direct current machine, the governor circuit that connects a relay and direct current machine, the distinguished and admirable switch of described temp sensing type comprise heater and the temperature detect switch (TDS) for detection of described heater variations in temperature that is connected with described heater.
Preferably, also comprise folder, the described heater of described folder clamping and described temperature detect switch (TDS).
Preferably, also comprise shell, the front end of described shell is coated on the periphery of the rear end of described heater and described temperature detect switch (TDS), and the front end of described heater and described temperature detect switch (TDS) and described folder are emerging in the outside of described shell, and described shell is fixed in the air channel of described direct current machine.
Preferably, described shell is hollow cylinder, and the outer wall of cylinder is provided with screw thread, and the outer wall of cylinder has been threaded connection nut.
Preferably, the rear end of described shell is connected with turncap, and described turncap offers through hole, and the diameter of described through hole is less than the internal diameter of described shell.
Preferably, also comprise external lead wire, described external lead wire passes described through hole and described shell inboard is connected to described heater and described temperature detect switch (TDS).
Preferably, described heater is to select the resistance-type heating bar.
Preferably, described temperature detect switch (TDS) adopts packaged type.
Compared with prior art; the novel distinguished and admirable switch of temp sensing type of the present invention is fixed in the air channel of direct current machine; and heater and the temperature detect switch (TDS) for detection of described heater variations in temperature that is connected with described heater be set; detect the height of heater temperature by temperature detect switch (TDS); whether can detect blower fan runs well; when blower fan is malfunctioning; the temperature detect switch (TDS) of the distinguished and admirable switch of temp sensing type can produce an alarm signal; cut off field power supply; and motor is shut down; thereby the protection direct current machine makes direct current machine avoid burning.
By following description also by reference to the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used for explaining embodiments of the invention.
Description of drawings
Fig. 1 is the schematic diagram of the novel distinguished and admirable switch of temp sensing type of the present invention.
Fig. 2 is that distinguished and admirable switch and relay are connected to the circuit diagram on the direct current machine governor circuit.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, similar element numbers represents similar element in the accompanying drawing.
Please refer to Fig. 1, Fig. 1 is the structural representation of the distinguished and admirable switch of temp sensing type, and the distinguished and admirable switch of described temp sensing type is fixed in the air channel of direct current machine, and it comprises heater 1, temperature detect switch (TDS) 2, folder 3, shell 4, nut 5, turncap 6 and external lead wire 7.
Particularly, described heater 1 is to select the resistance-type heating bar.Described temperature detect switch (TDS) 2 is clamped and connected together by described folder 3 with described heater 1, described temperature detect switch (TDS) 2 is for detection of the variations in temperature of described heater 1, described temperature detect switch (TDS) 2 adopts packaged type, the back of described temperature detect switch (TDS) 2 is piece of metal pieces, has that the temperature-sensitive area is large, the characteristics of good heat conduction effect.The front end of described shell 4 is coated on the periphery of the rear end of described heater 1 and described temperature detect switch (TDS) 2, the front end of described heater 1 and described temperature detect switch (TDS) 2 and described folder 3 all are emerging in the outside of described shell 4, and described shell 4 is fixed in the air channel of direct current machine, described shell 4 is hollow cylinder, and the outer wall of cylinder is provided with screw thread.Described nut 5 is threaded connection on the outer wall of cylinder.Described turncap 6 is fixed in the rear end of described shell 4, and described turncap 6 offers through hole 61, and the diameter of described through hole 61 is less than the internal diameter of described shell 4, and described turncap 6 not only can be used for fixing, and can seal, and prevents that air quantity runs off too much.Described external lead wire 7 passes described through hole 61 and described shell 4 inboards are connected to described heater 1 and described temperature detect switch (TDS) 2.
Please refer to Fig. 2, Fig. 2 is that distinguished and admirable switch and relay are connected to the circuit diagram on the direct current machine governor circuit, the distinguished and admirable switch GF of described temp sensing type connects the governor circuit of a relay J and direct current machine, and an one pole air switch HK is arranged on the governor circuit of direct current machine.The operation principle of the distinguished and admirable switch of temp sensing type is as follows:
Add the 24V alternating voltage for described heater 1, make described heater 1 be in the heating febrile state, with the variation of miniature temperature detect switch (TDS) 2 its temperature of detection, correspondingly by switching value of described relay J output.When blower fan runs well, wind flow is arranged in the air channel, certain heat that described heater 1 produces is taken away, at this moment, described temperature detect switch (TDS) 2 is failure to actuate; When blower fan is malfunctioning when not turning; when just not having wind flow or wind-force very little in the air channel; the temperature that described heater 1 produces constantly raises, after 50 ℃, and the at once action of described temperature detect switch (TDS) 2; make relay J obtain electronic work; send the signal of an overtemperature to the main control circuit of direct current machine, cut off field power supply, and stop the direct current machine running; thereby protected direct current machine, made direct current machine avoid being burnt.When the working temperature of discovery temperature detect switch (TDS) 2 was 50 ℃ in the test, the remolding sensitivity of the distinguished and admirable switch GF of described temp sensing type was higher, and versatility is good.And the distinguished and admirable switch performance of described temp sensing type is stable, compact conformation, volume is little, cost is low.
Above invention has been described in conjunction with most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.
Claims (8)
1. distinguished and admirable switch of novel temp sensing type, it is characterized in that: the distinguished and admirable switch of described temp sensing type is fixed in the air channel of direct current machine, the governor circuit that connects a relay and direct current machine, the distinguished and admirable switch of described temp sensing type comprise heater and the temperature detect switch (TDS) for detection of described heater variations in temperature that is connected with described heater.
2. the distinguished and admirable switch of novel temp sensing type as claimed in claim 1 is characterized in that: also comprise folder, the described heater of described folder clamping and described temperature detect switch (TDS).
3. the distinguished and admirable switch of novel temp sensing type as claimed in claim 1, it is characterized in that: also comprise shell, the front end of described shell is coated on the periphery of the rear end of described heater and described temperature detect switch (TDS), the front end of described heater and described temperature detect switch (TDS) and described folder are emerging in the outside of described shell, and described shell is fixed in the air channel of described direct current machine.
4. the distinguished and admirable switch of novel temp sensing type as claimed in claim 3, it is characterized in that: described shell is hollow cylinder, and the outer wall of cylinder is provided with screw thread, and the outer wall of cylinder has been threaded connection nut.
5. the distinguished and admirable switch of novel temp sensing type as claimed in claim 4, it is characterized in that: the rear end of described shell is connected with turncap, and described turncap offers through hole, and the diameter of described through hole is less than the internal diameter of described shell.
6. the distinguished and admirable switch of novel temp sensing type as claimed in claim 5, it is characterized in that: also comprise external lead wire, described external lead wire passes described through hole and described shell inboard is connected to described heater and described temperature detect switch (TDS).
7. the distinguished and admirable switch of novel temp sensing type as claimed in claim 1, it is characterized in that: described heater is to select the resistance-type heating bar.
8. the distinguished and admirable switch of novel temp sensing type as claimed in claim 1 is characterized in that: described temperature detect switch (TDS) employing packaged type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421646.8A CN102882186B (en) | 2012-10-26 | 2012-10-26 | Novel temperature sensing type air current switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421646.8A CN102882186B (en) | 2012-10-26 | 2012-10-26 | Novel temperature sensing type air current switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102882186A true CN102882186A (en) | 2013-01-16 |
| CN102882186B CN102882186B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210421646.8A Active CN102882186B (en) | 2012-10-26 | 2012-10-26 | Novel temperature sensing type air current switch |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60257737A (en) * | 1984-06-05 | 1985-12-19 | Fuji Electric Co Ltd | Cooler of fully-closed electric device |
| US4698756A (en) * | 1985-07-16 | 1987-10-06 | Westinghouse Electric Corp. | Generator stator winding diagnostic system |
| CN102243956A (en) * | 2011-04-19 | 2011-11-16 | 襄阳冲亚电器有限公司 | Protective switch of motor |
| CN202906443U (en) * | 2012-10-26 | 2013-04-24 | 广州电缆厂有限公司 | Novel temperature-sensing air current switch |
-
2012
- 2012-10-26 CN CN201210421646.8A patent/CN102882186B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60257737A (en) * | 1984-06-05 | 1985-12-19 | Fuji Electric Co Ltd | Cooler of fully-closed electric device |
| US4698756A (en) * | 1985-07-16 | 1987-10-06 | Westinghouse Electric Corp. | Generator stator winding diagnostic system |
| CN102243956A (en) * | 2011-04-19 | 2011-11-16 | 襄阳冲亚电器有限公司 | Protective switch of motor |
| CN202906443U (en) * | 2012-10-26 | 2013-04-24 | 广州电缆厂有限公司 | Novel temperature-sensing air current switch |
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| Publication number | Publication date |
|---|---|
| CN102882186B (en) | 2015-05-13 |
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