CN2912067Y - Thermal protecting system for dynamo of air compressor - Google Patents

Thermal protecting system for dynamo of air compressor Download PDF

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Publication number
CN2912067Y
CN2912067Y CN 200620105553 CN200620105553U CN2912067Y CN 2912067 Y CN2912067 Y CN 2912067Y CN 200620105553 CN200620105553 CN 200620105553 CN 200620105553 U CN200620105553 U CN 200620105553U CN 2912067 Y CN2912067 Y CN 2912067Y
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CN
China
Prior art keywords
air compressor
thermal protector
motor
thermal
operated valve
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.)
Expired - Fee Related
Application number
CN 200620105553
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Chinese (zh)
Inventor
方广忠
李晓军
Original Assignee
许晓华
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 许晓华 filed Critical 许晓华
Priority to CN 200620105553 priority Critical patent/CN2912067Y/en
Application granted granted Critical
Publication of CN2912067Y publication Critical patent/CN2912067Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an air compressor, in particular to an air compressor motor thermal protection system, which comprises a thermal protector, a temperature sensor of the thermal protector is connected with an air compressor motor casing, a solenoid valve is connected with a motor circuit through the input terminal and the output terminal in sereis, the input terminal of the thermal protector is connected with a positive pole of the motor power supply, the output terminal of the thermal protector is connected with an end of solenoid valve coil, and the other end of coil is connected with the output terminal of the solenoid valve. The utility model is helpful to reduce the volume of the air compressor, is safe to use, facilitates purchase of air compressor fittings, reduces manufacturing cost of the air compressor, solves problems in the prior art, for example, volume of thermal protector for the air compressor is too large, to use is unsafe, difficult to purchase fittings, and manufacturing cost is high etc.

Description

The air compressor motor thermal protection system
Technical field
The utility model relates to a kind of air compressor machine, particularly a kind of air compressor motor thermal protection system.
Technical background
How motor overheating for the protection air compressor machine in the prior art is connected on thermal protector on the electric motor loop, just electric motor loop is cut off when motor overheating, in case motor overheating is impaired.And the air compressor machine of employing low voltage DC motor work can reach 90A in the time of the operating current maximum.But the circuit of said structure electric motor loop all passes through from thermal protector, the volume of common thermal protector is certain ratio with the electric current that passes through, and electric current is big more, and the volume of needed thermal protector is also big more, cause the volume of air compressor machine excessive, also had certain danger in the use; Simultaneously, can carry on the above thermal protector of the 50A market also lessly at present, need adopt extraordinary thermal protector, thereby retrained the parts procurement of air compressor machine, cause the rising of air compressor machine manufacturing cost.
Summary of the invention
The utility model purpose is to provide a kind of dwindling of air compressor machine volume that be beneficial to; safe in utilization; be convenient to the air compressor machine parts procurement; reduced the air compressor motor thermal protection system of the manufacturing cost of air compressor machine; the air compressor machine thermal protector volume that has solved the prior art existence is excessive; use dangerously, parts procurement is difficult for, and manufacturing cost is than problems such as height.
Above-mentioned technical purpose of the present utility model mainly solves by the following technical programs: comprise thermal protector; the temperature sensor of thermal protector is connected on the air compressor motor casing; electromagnetically operated valve is connected on the electric motor loop by its input and output; the input of thermal protector links to each other with the positive pole of motor power; the output of described thermal protector links to each other with the coil of electromagnetically operated valve one end, and the coil other end is connected with the output of electromagnetically operated valve.Electromagnetically operated valve itself has by big electric current, the function that low-voltage starts, and buying is easy, and the utility model just is to use the organic direct current machine work of protecting big electric current in conjunction with the back of function of the electromagnetically operated valve and the ordinary hot protector of low-voltage startup.Under the normal temperature state, thermal protector is conducting state, energized, and the loop conducting at thermal protector place, the coil electricity in the electromagnetically operated valve, bridge plate contacts with lug plate under the effect of electromagnetic force, the electric motor loop conducting, motor runs well.In motor operation course, organism temperature raises, when reaching the break-off signal of thermal protector; thermal protector disconnects, and loop, thermal protector place disconnects, and electromagnetically operated valve is in power failure state; bridge plate and lug plate disconnect under the active force of spring, and electric motor loop disconnects, and motor quits work.Motor quits work the back organism temperature when dropping to the recovery temperature of thermal protector, and thermal protector restores to be connected, and motor is resumed work, and is heavy and reach the function of protection motor.Because thermal protector is not directly to be connected on the electric motor loop; but be connected in parallel on the electric motor loop with electromagnetically operated valve; therefore; the electric current of electric motor loop mainly passes through from electromagnetically operated valve; electric current by thermal protector is then less; adopting common thermal protector is the disconnection or the closure of may command electric motor loop; to reach the purpose of protection motor; and then help dwindling of air compressor machine volume; safe in utilization; avoid extraordinary thermal protector, thereby made the buying of thermal protector become easily, reduced the manufacturing cost of air compressor machine.
As preferably, be provided with start stop switch between described thermal protector input and the motor power positive pole.Close by breakdown and can start air compressor motor work or stop, start stop switch also can connect the pressure-head switch of air compressor machine, to realize the overvoltage protection of air compressor machine.
As preferably, the coil other end ground connection of described electromagnetically operated valve.Coil one end of electromagnetically operated valve is connected with the positive pole of motor power, other end ground connection, thus form the loop of a control electromagnetically operated valve break-make.
Therefore, the utlity model has and be beneficial to dwindling of air compressor machine volume, safe in utilization, be convenient to the air compressor machine parts procurement, reduced the characteristics such as manufacturing cost of air compressor machine.
Description of drawings
Fig. 1 is a kind of theory structure schematic diagram of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as shown in Figure 1; the temperature sensor (not shown) of thermal protector 1 is connected on air compressor motor 2 casings; electromagnetically operated valve 3 is connected in formation loop B on the electric motor loop by the lug plate 31 of its input and the lug plate 32 of output; the input of thermal protector 1 links to each other with the positive pole of motor power; be provided with start stop switch 4 between thermal protector input and the motor power positive pole, the output of thermal protector links to each other with coil 33 1 ends of electromagnetically operated valve 3 and forms loop A.
The utility model is used for the overtemperature protection of motor 118ZY12-750, and this motor operating voltage DC12V can reach 90A in the time of the operating current maximum.Under the normal temperature state, thermal protector is conducting state, energized, and loop A conducting, the coil electricity in the electromagnetically operated valve, bridge plate contacts with lug plate 31,32 under the effect of electromagnetic force, loop B conducting, motor runs well.In motor operation course, organism temperature raises, when reaching 115 ℃ of the break-off signals of thermal protector; thermal protector disconnects, loop not conducting of A, and electromagnetically operated valve is in power failure state; bridge plate and lug plate 31,32 disconnect under the active force of spring, and loop B disconnects, and motor quits work.Motor quits work the back organism temperature when dropping to 75 ℃ of the recovery temperatures of thermal protector, and thermal protector restores to be connected, and motor is resumed work, and is heavy and reach the function of protection motor.

Claims (2)

1, a kind of air compressor motor thermal protection system; comprise thermal protector; the temperature sensor of thermal protector is connected on the air compressor motor casing; it is characterized in that: electromagnetically operated valve is connected on the electric motor loop by its input and output; the input of thermal protector links to each other with the positive pole of motor power; the output of described thermal protector links to each other with the coil of electromagnetically operated valve one end, and the coil other end is connected with the output of electromagnetically operated valve.
2, air compressor motor thermal protection system according to claim 1 is characterized in that being provided with start stop switch between described thermal protector input and the motor power positive pole.
CN 200620105553 2006-07-11 2006-07-11 Thermal protecting system for dynamo of air compressor Expired - Fee Related CN2912067Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620105553 CN2912067Y (en) 2006-07-11 2006-07-11 Thermal protecting system for dynamo of air compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620105553 CN2912067Y (en) 2006-07-11 2006-07-11 Thermal protecting system for dynamo of air compressor

Publications (1)

Publication Number Publication Date
CN2912067Y true CN2912067Y (en) 2007-06-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620105553 Expired - Fee Related CN2912067Y (en) 2006-07-11 2006-07-11 Thermal protecting system for dynamo of air compressor

Country Status (1)

Country Link
CN (1) CN2912067Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101769255A (en) * 2008-12-29 2010-07-07 乐金电子(天津)电器有限公司 Long-lifetime compressor
CN102536777A (en) * 2012-03-01 2012-07-04 长春轨道客车股份有限公司 Method for detecting function of oil temperature relay of air compressor
CN103208781A (en) * 2013-04-12 2013-07-17 苏州欧泰克电子科技有限公司 Control circuit with overheat protection function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101769255A (en) * 2008-12-29 2010-07-07 乐金电子(天津)电器有限公司 Long-lifetime compressor
CN102536777A (en) * 2012-03-01 2012-07-04 长春轨道客车股份有限公司 Method for detecting function of oil temperature relay of air compressor
CN103208781A (en) * 2013-04-12 2013-07-17 苏州欧泰克电子科技有限公司 Control circuit with overheat protection function
CN103208781B (en) * 2013-04-12 2015-06-17 苏州欧泰克电子科技有限公司 Control circuit with overheat protection function

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070613

Termination date: 20110711