CN209385324U - Refrigeration unit current cutting protection structure - Google Patents
Refrigeration unit current cutting protection structure Download PDFInfo
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- CN209385324U CN209385324U CN201821768008.2U CN201821768008U CN209385324U CN 209385324 U CN209385324 U CN 209385324U CN 201821768008 U CN201821768008 U CN 201821768008U CN 209385324 U CN209385324 U CN 209385324U
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- relay
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- contactor
- pumping
- power control
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Abstract
The utility model refrigeration unit current cutting protection structure; including compressor power control component parallel with one another and pumping power control component; compressor power control component includes compressor contactor KM1; pumping power control component includes that pumping contactor KM2, compressor contactor KM1 and pumping contactor KM2 and relay KA1, relay KA2 are used in combination.The utility model protection act is rapid, and system structure is simple, low in cost, stable and reliable in work, can modularization making and installation.
Description
Technical field
The present invention relates to refrigeration equipment protection technique and its protection equipment technical field, specifically, its show it is a kind of
Refrigeration unit current cutting protection structure.
Background technique
In refrigeration unit use process, if freezing side medium do not flow, due to compressor open after can by it is static not
Dynamic medium cool to rapidly it is below freezing, cause evaporate side medium freezing and expansion, to damage evaporator heat exchange face, refrigerant
Leakage causes unit to fail, and meeting medium can enter refrigerant system and cause to damage to compressor even into compressor when serious
It is bad.
At this stage to the protection of refrigeration unit, flow switch is set to be used on medium pipeline, when by evaporator
Rate-of flow is lower than setting value, or when not flowing, compressor machine is fail to open, to protect to compressor.
But flow switch is easy failure:
Failure cause first is that the components such as target piece of industrial application intermediary confrontation flow switch are corroded, flow switch
Movement failure；
Failure cause second is that the impurity in medium has blocked target piece, so that it is failed from normal on-off；
Failure cause third is that for a long time operation target piece table piece be likely to form the microorganisms such as algae, cause movement fail.
In order to avoid flow switch failure condition, equipment operation is maintained and maintenance has higher requirements, such as needs periodically to examine
It looks into, clean, demarcate, replace, bring many inconvenience to actual use.
In addition, generally requiring client first to stop compressor, then termination of pumping Pu when refrigeration unit shutdown operation；If client accidentally grasps
Make first termination of pumping Pu, then stop compressor, intermediate compressor for some time can be run in the case where no media flow, to evaporation
Device is abnormally dangerous, although after pumping stops, flow switch can quote failure, control program can stop compressor, by
It is a kind of mechanical structure in flow switch, needs to do action delay judgement in a program, it usually needs the delay greater than 3 seconds, it is no
Then being easy often false failure causes unit to be unable to normal table work.Therefore in practical engineering applications, often 3 seconds with
Compressor receives stopping signal afterwards, carries out shutdown or off-load, and since refrigeration inertia is larger, medium temperature can decline comparatively fast, is easy
Cause the damage evaporator that freezes.
Therefore, it is necessary to provide a kind of refrigeration unit current cutting protection structure to solve the above problems.
Summary of the invention
The object of the present invention is to provide a kind of refrigeration unit current cutting protection structures.
Technical solution is as follows:
A kind of refrigeration unit current cutting protection structure is powered including compressor power control component parallel with one another and pumping and controls
Component processed, compressor power control component include compressor contactor KM1, and pumping power control component includes pumping contactor
KM2, compressor contactor KM1 and pumping contactor KM2 and relay KA1, relay KA2 are used in combination.
Further, it after compressor contactor KM1 and pumping contactor KM2 are in parallel, is connected to and control loop；It controls back
The uncontrolled software program in road influences, even if control software failure, can also play a protective role.
Further, compressor power control component is connected to control loop, controls with after pumping power control modules in parallel
Circuit processed includes Human-machine Control circuit, pumps power on/off, will not influence man-machine interface normal work.
Further, compressor power control component further include with the compressor contactor KM1 relay KA1 being connected to and after
Electric appliance KA2.
Further, pumping power control component further includes the relay KA1 being connected to pumping contactor KM2.
Further, control loop further include with compressor power control component and pumping power control component formed and
The relay KA2 of joint control circuit communication.
Further, when pumping no power, pumping contactor KM2 is disconnected, relay KA1 coil losing electricity, and relay KA1 is normal
Closed contact restores closure；Relay KA2 coil obtains electric actuation, and relay KA2 normally-closed contact disconnects, control loop power-off, compression
Machine can not be opened normally by program.
Compared with prior art, the beneficial effects of the present invention are:
1) pump no power in the case of, compressor can not be normally-open, so as to avoid due to client be switched on maloperation can
The damage of unit caused by energy；
2) after pumping power-off, compression function is disconnected rapidly, so as to avoid what be may cause due to ClientShutdown maloperation
Unit damage；
3) protection act is rapid, and system structure is simple, low in cost, stable and reliable in work, can modularization making and installation.
Detailed description of the invention
Fig. 1 is one of structural schematic diagram of the invention.
Specific embodiment
Embodiment:
Referring to Fig. 1, the present embodiment shows a kind of refrigeration unit current cutting protection structure, it is logical including compressor parallel with one another
Electric control component and pumping power control component, compressor power control component includes compressor contactor KM1, and pumping, which is powered, to be controlled
Component processed includes pumping contactor KM2, compressor contactor KM1 and pumping contactor KM2 and relay KA1, relay KA2 equal
It is used in combination.
After compressor contactor KM1 and pumping contactor KM2 are in parallel, it is connected to and control loop；Control loop is uncontrolled
Software program processed influences, even if control software failure, can also play a protective role.
After compressor power control component and pumping power control modules in parallel, it is connected to control loop, control loop packet
Human-machine Control circuit is included, power on/off is pumped, will not influence man-machine interface normal work.
Compressor power control component further includes and the compressor contactor KM1 relay KA1 being connected to and relay KA2.
Pumping power control component further includes the relay KA1 being connected to pumping contactor KM2.
Control loop further includes the Parallel Control electricity formed with compressor power control component and pumping power control component
The relay KA2 of road connection.
When pumping no power, pumping contactor KM2 is disconnected, relay KA1 coil losing electricity, and relay KA1 normally-closed contact is extensive
Reclosing is closed；Relay KA2 coil obtains electric actuation, and relay KA2 normally-closed contact disconnects, and control loop power-off, compressor can not be just
Often opened by program.
Compared with prior art, the beneficial effects of the present invention are:
1) pump no power in the case of, compressor can not be normally-open, so as to avoid due to client be switched on maloperation can
The damage of unit caused by energy；
2) after pumping power-off, compression function is disconnected rapidly, so as to avoid what be may cause due to ClientShutdown maloperation
Unit damage；
3) protection act is rapid, and system structure is simple, low in cost, stable and reliable in work, can modularization making and installation.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (7)
1. a kind of refrigeration unit current cutting protection structure, it is characterised in that: including compressor power control component parallel with one another and
Power control component is pumped, compressor power control component includes compressor contactor KM1, connects with compressor contactor KM1
Relay coil KA2, pumping power control component include pumping contactor KM2, with pumping the concatenated relay of contactor KM2
Coil KA1 is arranged in series on power supply main line, with relay coil with the relay contact KA2 of relay coil KA2 cooperation
The relay contact KA1 of KA1 cooperation is arranged in series in compressor power control component, with compressor contactor KM1, relay
Coil KA2 series connection, compressor contactor KM1 and pumping contactor KM2 and relay KA1, relay KA2 are used in combination.
2. a kind of refrigeration unit current cutting protection structure according to claim 1, it is characterised in that: compressor contactor KM1
With pumping contactor KM2 it is in parallel after, be connected to and control loop；The uncontrolled software program of control loop influences, even if control
Software failure can also play a protective role.
3. a kind of refrigeration unit current cutting protection structure according to claim 2, it is characterised in that: compressor power control group
After part and pumping power control modules in parallel, it is connected to control loop, control loop includes Human-machine Control circuit, pumps on-off
Electricity will not influence man-machine interface normal work.
4. a kind of refrigeration unit current cutting protection structure according to claim 3, it is characterised in that: compressor power control group
Part further includes and the compressor contactor KM1 relay KA1 being connected to and relay KA2.
5. a kind of refrigeration unit current cutting protection structure according to claim 4, it is characterised in that: pumping power control component
It further include the relay KA1 being connected to pumping contactor KM2.
6. a kind of refrigeration unit current cutting protection structure according to claim 5, it is characterised in that: control loop further include with
The relay KA2 for the Parallel Control circuit communication that compressor power control component and pumping power control component are formed.
7. a kind of refrigeration unit current cutting protection structure according to claim 6, it is characterised in that: when pumping no power, pump
Pu contactor KM2 is disconnected, relay KA1 coil losing electricity, and relay KA1 normally-closed contact restores closure；Relay KA2 coil obtains electric
It is attracted, relay KA2 normally-closed contact disconnects, and control loop power-off, compressor can not be opened normally by program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821768008.2U CN209385324U (en) | 2018-10-30 | 2018-10-30 | Refrigeration unit current cutting protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821768008.2U CN209385324U (en) | 2018-10-30 | 2018-10-30 | Refrigeration unit current cutting protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209385324U true CN209385324U (en) | 2019-09-13 |
Family
ID=67867496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821768008.2U Active CN209385324U (en) | 2018-10-30 | 2018-10-30 | Refrigeration unit current cutting protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209385324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296526A (en) * | 2018-10-30 | 2019-02-01 | 苏州奥天诚机械有限公司 | Refrigeration unit current cutting protection structure |
-
2018
- 2018-10-30 CN CN201821768008.2U patent/CN209385324U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296526A (en) * | 2018-10-30 | 2019-02-01 | 苏州奥天诚机械有限公司 | Refrigeration unit current cutting protection structure |
| CN109296526B (en) * | 2018-10-30 | 2024-04-05 | 苏州奥德高端装备股份有限公司 | Flow-break protection structure of refrigerating unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191030 Address after: Suzhou City, Jiangsu Province, Yushan Town, Kunshan City, 215000 five road No. 228, 3, 4. Patentee after: Suzhou Aode Machinery Co., Ltd. Address before: 215300 No. 366 Yuyang Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: SUZHOU CITY AUSTRIAN TIANCHENG MACHINERY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 3 and 4, 228 Wulian Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Suzhou Aode high end equipment Co.,Ltd. Address before: Room 3 and 4, 228 Wulian Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: SUZHOU AODE MACHINERY Co.,Ltd. |