CN107294065A - Compressor phase shortage fast tripping protection device - Google Patents
Compressor phase shortage fast tripping protection device Download PDFInfo
- Publication number
- CN107294065A CN107294065A CN201710724261.1A CN201710724261A CN107294065A CN 107294065 A CN107294065 A CN 107294065A CN 201710724261 A CN201710724261 A CN 201710724261A CN 107294065 A CN107294065 A CN 107294065A
- Authority
- CN
- China
- Prior art keywords
- phase
- compressor
- contactor
- current
- protection device
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of compressor phase shortage fast tripping protection device, include surface-mounted integrated circuit, three-phase ac contactor, compressor and three-phase alternating-current supply, cpu chip is separately installed with surface-mounted integrated circuit, two current transformers, switching value output module and signal input terminal, two current transformers, switching value output module and signal input terminal are electrically connected with cpu chip respectively, any two-phase of three-phase alternating-current supply is corresponded to through after two current transformers respectively, it is connected together with another phase of three-phase alternating-current supply with the input of three-phase ac contactor, the three-phase output end of three-phase ac contactor is connected with the three-phase input end of compressor, switching value output module is connected with the coil of three-phase ac contactor.The present invention can be detected to the running current of three-phase compressor, it is therefore prevented that due to power supply and compressor load end phase shortage, it is impossible to timely quick-break, and cause the problem of compressor is burnt out.
Description
Technical field
The present invention relates to three-phase compressor of air conditioner running protection device field, specifically a kind of compressor phase shortage fast tripping protection
Device.
Background technology
Three-phase compressor starts in phase shortage, it is impossible to normal to start, and its winding current is 4 ~ 7 times of rated current, hair
Heat is 16 ~ 49 times of normal temperature rise, and compressor is burnt out because it exceedes temperature rise rapidly.At phase shortage in operation, compressor
Exceed rated current in over-current state, i.e. electric current, compressor is changed into stall from tired out, the winding current increase for phase of not breaking is more,
Compressor is caused to burn out rapidly.
In the electrical design of the air-conditioning system of three phase mains, typically power phase protector is installed additional in power end, load
End installs electrothermal relay additional, come prevent power end three-phase power supply phase sequence anti-or phase shortage, load end overload of compressor and damage compressor.
In actual use, it is bad or the factor such as damage that load end has wiring loosening, a three-phase ac contactor contact, causes pressure
Contracting machine phase shortage, and now protection is will be unable to load compression generator terminal in the power phase protector of power end, though electrothermal relay has
Default-phase protection function, but to lean on current heating to act, it is necessary to the regular hour, therefore compressor can be because of the phase-deficient operation time
Long, three-phase current is unbalanced and excessive and damages.
The content of the invention
It is an object of the invention to provide a kind of compressor phase shortage fast tripping protection device, the running current of three-phase compressor is entered
Row detection, to prevent power supply and compressor load end phase shortage, it is impossible to timely quick-break, and cause the problem of compressor is burnt out.
Technical scheme is as follows：
A kind of compressor phase shortage fast tripping protection device, includes surface-mounted integrated circuit, three-phase ac contactor, compressor and three intersecting
Flow power supply, it is characterised in that：Cpu chip, two current transformers, switching values are separately installed with described surface-mounted integrated circuit defeated
Go out module and signal input terminal, described two current transformers, switching value output module and signal input terminal respectively with
The cpu chip electrical connection, any two-phase of the three-phase alternating-current supply is corresponded to through two described current transformers respectively
Afterwards, the input with the three-phase ac contactor together with another phase of the three-phase alternating-current supply is connected, the three-phase
The three-phase output end of A.C. contactor is connected with the three-phase input end of the compressor, described switching value output module and institute
The coil for stating three-phase ac contactor is connected.
Described compressor phase shortage fast tripping protection device, it is characterised in that：Described surface-mounted integrated circuit selects epoxy resin
PCB printed circuit board (PCB)s.
Described compressor phase shortage fast tripping protection device, it is characterised in that：Described switching value output module selects relay
Device module.
The principle of the present invention is as follows：
The present invention is in view of during phase shortage, the winding current for phase of breaking is zero, and the winding current for phase of not breaking increases many principles, passes through two
Individual transformer detects the wherein biphase current of three-phase compressor respectively, and this biphase current is respectively provided with cpu chip program
Two current values, one is zero current value, and one is over current value；Therefore, no matter any phase, as long as detecting zero current value or mistake
Current value, cpu chip sends one and stops signal compressor, switching value output module dead electricity, three-phase ac contactor contact immediately
Disconnect, compressor stops, and be concurrently out of order code signal.
The switching value output module being connected with cpu chip directly can be connected with the control end of A.C. contactor, be automatically controlled
The start and stop of compressor.
Beneficial effects of the present invention：
The present invention can be detected to the running current of three-phase compressor, it is therefore prevented that because power supply and compressor load end lack
Phase, it is impossible to timely quick-break, and cause the problem of compressor is burnt out.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is structural principle block diagram of the present invention.
Embodiment
Referring to Fig. 1,2, a kind of compressor phase shortage fast tripping protection device includes epoxy resin PCB printed circuit board (PCB)s 1, three
CPU cores are separately installed with cross streams contactor 6, compressor 7 and three-phase alternating-current supply 8, epoxy resin PCB printed circuit board (PCB)s 1
Piece 2, two current transformers 3, relay module 4 and signal input terminal 5, two current transformers 3, the and of relay module 4
Signal input terminal 5 is electrically connected with cpu chip 2 respectively, and any two-phase of three-phase alternating-current supply 8 is corresponded to through two electric currents respectively
After transformer 3, the input with three-phase ac contactor 6 together with another phase of three-phase alternating-current supply 8 is connected, three-phase alternating current
The three-phase output end of contactor 6 is connected with the three-phase input end of compressor 7, relay module 4 and three-phase ac contactor 6
Coil is connected.
Below in conjunction with accompanying drawing, the present invention is further illustrated：
Start, the control three-phase ac contactor 6 of relay module 4 obtains electric, and compressor 7 works, when two current transformers 3 are any
When one transformer detects zero current value or over current value, cpu chip 2 sends one and stops signal compressor, relay immediately
The dead electricity of module 4, the contact of three-phase ac contactor 6 disconnects, and compressor 7 is stopped, and be concurrently out of order code signal.
Above example is not limited only to protection scope of the present invention, all basic thoughts based on the present invention and repaiied
Change or change belong to protection scope of the present invention.
Claims (3)
1. a kind of compressor phase shortage fast tripping protection device, includes surface-mounted integrated circuit, three-phase ac contactor, compressor and three-phase
AC power, it is characterised in that：Cpu chip, two current transformers, switching values are separately installed with described surface-mounted integrated circuit
Output module and signal input terminal, described two current transformers, switching value output module and signal input terminal difference
Electrically connected with the cpu chip, any two-phase of the three-phase alternating-current supply is corresponded to through two described Current Mutual Inductances respectively
After device, the input with the three-phase ac contactor together with another phase of the three-phase alternating-current supply is connected, and described three
The three-phase output end of cross streams contactor is connected with the three-phase input end of the compressor, described switching value output module with
The coil of the three-phase ac contactor is connected.
2. compressor phase shortage fast tripping protection device according to claim 1, it is characterised in that：Described surface-mounted integrated circuit choosing
With epoxy resin PCB printed circuit board (PCB)s.
3. compressor phase shortage fast tripping protection device according to claim 1, it is characterised in that：Described output switch parameter mould
Block selects relay module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710724261.1A CN107294065A (en) | 2017-08-22 | 2017-08-22 | Compressor phase shortage fast tripping protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710724261.1A CN107294065A (en) | 2017-08-22 | 2017-08-22 | Compressor phase shortage fast tripping protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107294065A true CN107294065A (en) | 2017-10-24 |
Family
ID=60106577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710724261.1A Pending CN107294065A (en) | 2017-08-22 | 2017-08-22 | Compressor phase shortage fast tripping protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107294065A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899278A (en) * | 2017-12-08 | 2019-06-18 | 丹佛斯（天津）有限公司 | Controller and control method, compressor assembly and refrigeration system for compressor |
| CN110829377A (en) * | 2019-11-14 | 2020-02-21 | 合肥天鹅制冷科技有限公司 | High temperature air conditioner three-phase compressor overcurrent protection control system |
| CN111952937A (en) * | 2020-08-03 | 2020-11-17 | 合肥天鹅制冷科技有限公司 | Vehicle-mounted air conditioner single-phase compressor overcurrent protection control system |
| CN112283087A (en) * | 2020-09-07 | 2021-01-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor control method with open-phase protection function and controller thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202483848U (en) * | 2011-12-31 | 2012-10-10 | 大连雅立峰生物制药有限公司 | Control circuit of vaccine cold storage refrigeration compressor |
| CN202663088U (en) * | 2012-07-31 | 2013-01-09 | 傅仰取 | Phase sequence recognition control device of electromotor |
| CN203444023U (en) * | 2013-08-29 | 2014-02-19 | 合肥天鹅制冷科技有限公司 | Three-phase AC power supply output detection apparatus |
| CN207098594U (en) * | 2017-08-22 | 2018-03-13 | 合肥天鹅制冷科技有限公司 | Compressor phase shortage fast tripping protection device |
-
2017
- 2017-08-22 CN CN201710724261.1A patent/CN107294065A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202483848U (en) * | 2011-12-31 | 2012-10-10 | 大连雅立峰生物制药有限公司 | Control circuit of vaccine cold storage refrigeration compressor |
| CN202663088U (en) * | 2012-07-31 | 2013-01-09 | 傅仰取 | Phase sequence recognition control device of electromotor |
| CN203444023U (en) * | 2013-08-29 | 2014-02-19 | 合肥天鹅制冷科技有限公司 | Three-phase AC power supply output detection apparatus |
| CN207098594U (en) * | 2017-08-22 | 2018-03-13 | 合肥天鹅制冷科技有限公司 | Compressor phase shortage fast tripping protection device |
Non-Patent Citations (1)
| Title |
|---|
| 刘守江: "《制冷空调设备及其数字电路维修技术》", 30 November 2003, 西安电子科技大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899278A (en) * | 2017-12-08 | 2019-06-18 | 丹佛斯（天津）有限公司 | Controller and control method, compressor assembly and refrigeration system for compressor |
| US11486621B2 (en) | 2017-12-08 | 2022-11-01 | Danfoss (Tianjin) Ltd. | Controller and method for compressor, compressor assembly and refrigeration system |
| CN110829377A (en) * | 2019-11-14 | 2020-02-21 | 合肥天鹅制冷科技有限公司 | High temperature air conditioner three-phase compressor overcurrent protection control system |
| CN111952937A (en) * | 2020-08-03 | 2020-11-17 | 合肥天鹅制冷科技有限公司 | Vehicle-mounted air conditioner single-phase compressor overcurrent protection control system |
| CN112283087A (en) * | 2020-09-07 | 2021-01-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor control method with open-phase protection function and controller thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171024 |