CN203367994U - Single-phase speed regulating motor protection circuit, single-phase speed regulating motor and fan coil - Google Patents
Single-phase speed regulating motor protection circuit, single-phase speed regulating motor and fan coil Download PDFInfo
- Publication number
- CN203367994U CN203367994U CN 201320427336 CN201320427336U CN203367994U CN 203367994 U CN203367994 U CN 203367994U CN 201320427336 CN201320427336 CN 201320427336 CN 201320427336 U CN201320427336 U CN 201320427336U CN 203367994 U CN203367994 U CN 203367994U
- Authority
- CN
- China
- Prior art keywords
- motor
- speed regulating
- phase speed
- regulating motor
- bidirectional thyristor
- 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 - Lifetime
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- 230000001105 regulatory effect Effects 0.000 title claims description 25
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims description 17
- 230000005611 electricity Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a single-phase adjustable speed motor protection circuit, this motor protection circuit are connected with the shelves bit line and the motor zero line electricity of motor, including concatenating the bidirectional thyristor on the motor shelves bit line, this bidirectional thyristor sets up with the shelves line one-to-one, and this bidirectional thyristor's control pole passes through the resistance electricity with the motor zero line and is connected. The utility model discloses simple structure easily realizes, can solve among the prior art because the motor damage problem that the wiring mistake leads to. The utility model also provides a single-phase adjustable speed motor and fan coil with this motor protection circuit.
Description
Technical field
The utility model relates to the electric machines control technology field, particularly a kind of motor protective circuit, motor and fan coil.
Background technology
Single-phase speed regulating motor is widely used in the household electrical appliances such as air-conditioning, washing machine, fan and other electric equipments.Single-phase speed regulating motor comprises the terminals such as many gear lines and electric capacity line, motor zero line, need to be by gear line and motor zero line access power supply when the user uses, because number of conductors is many, have unavoidably wiring error, modal problem has all accessed the gear line by the zero live wire of power supply, and causes the motor damage.
The utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of single-phase speed regulating motor protective circuit simple in structure, to solve the easily damaged problem of single-phase speed regulating motor wiring error in prior art.The utility model also provides a kind of single-phase speed regulating motor control system and fan coil with this protective circuit.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of single-phase speed regulating motor protective circuit; this motor comprises gear line and motor zero line; this motor protective circuit comprises the bidirectional thyristor be serially connected with on the gear line; bidirectional thyristor and the corresponding setting one by one of gear line; bidirectional thyristor comprises the control utmost point, controls the utmost point and is electrically connected to by resistance with the motor zero line.
Further, the span of the resistance R of resistance is:
U/I≥R＞U/2I，
The supply voltage that wherein U is motor, the On current that I is bidirectional thyristor.
The utility model also provides a kind of single-phase speed regulating motor, and it comprises above-mentioned motor protective circuit.
The utility model also provides a kind of fan coil, and it comprises above-mentioned single-phase speed regulating motor.
The beneficial effects of the utility model are: can prevent that by motor protective circuit simple in structure motor from being damaged because of wiring error, evade the equipment fault that the human operational error causes, improve the reliability of equipment.
The accompanying drawing explanation
Fig. 1 is single-phase speed regulating motor protective circuit schematic diagram of the present utility model.
Embodiment
The purpose of this utility model is to provide a kind of single-phase speed regulating motor protective circuit simple in structure, with the easily damaged problem of single-phase speed regulating motor wiring error in the wiring prior art.The utility model also provides a kind of single-phase speed regulating motor control system and fan coil with this protective circuit.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
With reference to Fig. 1, single-phase speed regulating motor 5 comprises four gear lines 1 and a motor zero line 2, all be serially connected with bidirectional thyristor 3 on every gear line 1, the control utmost point (also becoming the G utmost point or gate pole) of the bidirectional thyristor 3 on every gear line 1 all is electrically connected to motor zero line 2 by resistance 3.When the control utmost point of bidirectional thyristor 3 reaches its On current by electric current, bidirectional thyristor 3 will conducting, and as long as, more than electric current remains on and maintain electric current, bidirectional thyristor 3 will maintain conducting state and can not be controlled the impact of electrode current always.
When wiring error, the zero live wire of motor power has all accessed gear line 1, in the current circuit at this moment formed, two resistance 3 is just arranged; the electric current of now controlling the utmost point will reduce by half; do not reach the On current of bidirectional thyristor 3, motor must not be electric, reached the purpose of protection motor.
Selection for the resistance R of resistance 3 should meet, following condition:
U/I≥R＞U/2I
The supply voltage that wherein U is described motor, the On current that I is described bidirectional thyristor.This guarantees that in correct wiring bidirectional thyristor 3 can conducting, makes motor normally go up electric operation, when wiring error, guarantees that the current value in loop is less than the On current of bidirectional thyristor 3, can't obtain motor electric.
Single-phase speed regulating motor protective circuit in above embodiment is simple in structure; be easy to and existing motor coupling; also be easy to the batch production of motor producer with the single-phase speed regulating motor of this protective circuit, it easily causes the problem of burn-down of electric motor in the time of can well solving single-phase speed regulating motor wiring error in prior art.
Based on above embodiment, the utility model also provides a kind of fan coil, comprises the single-phase speed regulating motor of above embodiment.Can improve the reliability of fan coil with the fan coil of above-mentioned single-phase speed regulating motor, reduce failure rate, reduce maintenance cost.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (4)
1. a single-phase speed regulating motor protective circuit; described motor comprises gear line and motor zero line; it is characterized in that; described motor protective circuit comprises the bidirectional thyristor be serially connected with on described gear line; described bidirectional thyristor and the corresponding setting one by one of described gear line; described bidirectional thyristor comprises the control utmost point, and the described control utmost point is electrically connected to by resistance with described motor zero line.
2. motor protective circuit according to claim 1, is characterized in that, the span of the resistance R of described resistance is:
U/I≥R＞U/2I，
The supply voltage that wherein U is described motor, the On current that I is described bidirectional thyristor.
3. a single-phase speed regulating motor, is characterized in that, comprises motor protective circuit as claimed in claim 1 or 2.
4. a fan coil, is characterized in that, comprises single-phase speed regulating motor as claimed in claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320427336 CN203367994U (en) | 2013-07-15 | 2013-07-15 | Single-phase speed regulating motor protection circuit, single-phase speed regulating motor and fan coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320427336 CN203367994U (en) | 2013-07-15 | 2013-07-15 | Single-phase speed regulating motor protection circuit, single-phase speed regulating motor and fan coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203367994U true CN203367994U (en) | 2013-12-25 |
Family
ID=49815713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320427336 Expired - Lifetime CN203367994U (en) | 2013-07-15 | 2013-07-15 | Single-phase speed regulating motor protection circuit, single-phase speed regulating motor and fan coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203367994U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300499A (en) * | 2013-07-15 | 2015-01-21 | 珠海格力电器股份有限公司 | Single-phase speed regulating motor protection circuit, single-phase speed regulating motor and fan coil |
| CN104538930A (en) * | 2014-11-25 | 2015-04-22 | 珠海格力电器股份有限公司 | Automatic motor fault detection system and method |
-
2013
- 2013-07-15 CN CN 201320427336 patent/CN203367994U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300499A (en) * | 2013-07-15 | 2015-01-21 | 珠海格力电器股份有限公司 | Single-phase speed regulating motor protection circuit, single-phase speed regulating motor and fan coil |
| CN104538930A (en) * | 2014-11-25 | 2015-04-22 | 珠海格力电器股份有限公司 | Automatic motor fault detection system and method |
| CN104538930B (en) * | 2014-11-25 | 2017-11-10 | 珠海格力电器股份有限公司 | Automatic motor fault detection system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20190205 |
|
| AV01 | Patent right actively abandoned |