CN109724338A - A kind of cryogenic refrigeration operation controller - Google Patents
A kind of cryogenic refrigeration operation controller Download PDFInfo
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- CN109724338A CN109724338A CN201910048570.0A CN201910048570A CN109724338A CN 109724338 A CN109724338 A CN 109724338A CN 201910048570 A CN201910048570 A CN 201910048570A CN 109724338 A CN109724338 A CN 109724338A
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- signal
- cpu chip
- pressure switch
- switching value
- value output
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 32
- 230000005494 condensation Effects 0.000 claims abstract description 27
- 238000009833 condensation Methods 0.000 claims abstract description 27
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 17
- 239000003822 epoxy resin Substances 0.000 claims abstract description 6
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000004378 air conditioning Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
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- Air Conditioning Control Device (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a kind of cryogenic refrigerations to run controller, it include epoxy resin PCB circuit board, cpu chip, signal I/O interface, the signal input interface, switching value output module, liquid crystal display panel being installed on integrated circuit board, signal I/O interface connects cpu chip and LCD panel, middle pressure pressure switch, low pressure switch, sensor pass through signal input interface respectively and connect with cpu chip in cryogenic refrigerating system, and cpu chip heats band connection with compressor, condensation fan, crank in cryogenic refrigerating system respectively by switching value output module.The present invention solves the adaptability for the refrigeration system that temperature change is big and load variations are big, ensure that air-conditioning refrigeration system reliability of operation.
Description
Technical field
The present invention relates to refrigerant system controller field, specifically a kind of cryogenic refrigeration runs controller.
Background technique
Execute the carryings equipment such as vehicle-mounted, airborne of the tasks such as transport, communication, detection, the round-the-clock fortune such as base station, precision equipment
Row, when the outdoor ambient temperature is low, very due to heater elements heats such as the computer rooms, cabin indoor electronic, laser aid that are cooled down
Greatly, it is still necessary to which air conditioner refrigerating cools down to it, therefore air-conditioning work is in cryogenic refrigeration operating status.Air-conditioning products environment temperature compared with
Refrigerating operaton is continued to when low will result in evaporimeter frosting, freezes, or even will cause compressor " liquid hammer " damage, influence unit
Normal use.
Therefore, carryings equipment and the base station, precision equipment such as vehicle-mounted, airborne to execute the tasks such as transport, communication, detection
Wait the matched air-conditioning of computer rooms that should take the control measure adaptable with it to it in cold operation, to guarantee refrigeration system
Reliability.
For this purpose, devising a kind of cryogenic refrigeration operation controller, by the acquisition to signal, feedback connects to controller input
Mouthful, chip is judged by the program of setting, the state of control adjustment air-conditioning refrigeration system operation, it is ensured that reliability service.
The object of the present invention is to provide a kind of cryogenic refrigerations to run controller for summary of the invention, to solve to realize refrigeration system
Reliability service under low temperature environment.
In order to achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of cryogenic refrigeration runs controller, is used for cryogenic refrigeration operating system, the cryogenic refrigeration operating system include compressor,
Condenser, liquid storage device, the heat tape being wrapped on compressor case are equipped with middle pressure pressure and open between condenser and liquid storage device
It closes, low pressure switch is installed on compressor return air pipe, outdoor environment is equipped with the sensor of detection temperature, it is characterised in that:
Controller includes the cpu chip being integrated on circuit board, signal I/O interface, signal input interface, switching value output module, institute
It states signal I/O interface, signal input interface, switching value output module to connect with cpu chip respectively, wherein signal input interface is also
It is connect respectively with middle pressure pressure switch, low pressure switch, sensor, condensation of the switching value output module also with condenser cooperation
The power end connection of the power end of blower, the power end of compressor, heat tape, cpu chip are based on middle pressure pressure switching signal
Condensation fan start and stop are controlled by switching value output module, cpu chip is based on low pressure switch signal and passes through output switch parameter
Module controls start/stop of compressor, and cpu chip is based on sensor signal and controls heat tape start and stop by switching value output module.
A kind of cryogenic refrigeration runs controller, it is characterised in that: liquid crystal display panel is also integrated on circuit board,
Liquid crystal display panel is connect with signal I/O interface.
A kind of cryogenic refrigeration runs controller, it is characterised in that: cpu chip, signal I/O interface, signal input
Interface, switching value output module, liquid crystal display panel are integrated in epoxy resin PCB printed circuit board.
A kind of cryogenic refrigeration runs controller, it is characterised in that: the switching value output module is relay mould
Block.
The present invention is controlled using cpu chip, is controlled condensation fan, with dress condenser and liquid storage in refrigeration systems
The middle pressure pressure switch filled between device carries out the force samples after system condensing, and controls condensating wind by controller cpu chip
The start and stop of machine；By the signal before being switched on to the low pressure switch on compressor return air pipe, to solve environment temperature too
The problem of when low, low pressure switch is in an off state down, and system cannot start.With sensor detect outdoor environment temperature come
The crank heating tape being wrapped on compressor housing under low temperature environment is controlled, when low temperature, to pressure before compressor start
Contracting machine is preheated.
In the present invention, it is cold that carry out system is switched by the middle pressure pressure filled between condenser and liquid storage device in refrigeration systems
Force samples after solidifying, that is, experience refrigeration system and go out condensing pressure, (can be according to not to middle pressure pressure switch one desired value of setting
Same use environment is configured), and the signal input interface that middle pressure pressure switch is switched with the middle pressure pressure on controller
It is connected, chip is judged by the on-off model of centering pressure pressure switch feedback, to control condensation fan.When environment temperature
Degree is suitable, and when condensing pressure is higher than middle pressure pressure switch setting value, pressure switch contact is in normally off, and controller output is opened
Condensation fan signal, condensation fan operate normally；When external environment temperature is relatively low, and condensing pressure is lower than pressure switch setting value,
Pressure switch contact is in an off state, and controller output stops condensation fan signal, and condensation fan is out of service, works as condensing pressure
When being restored to the setting value of pressure switch or more, pressure switch contact restores normally off, and controller exports again and opens condensation fan
Signal, condensation fan bring into operation again.Therefore, it is fed back by the switching value sampled to pressure switch, controller is sentenced by logic
It is disconnected, the start-stop of condensation fan is controlled, ensure that the condensing pressure of system in a suitable value.
In the present invention, the low pressure switch in the low pressure switch and controller installed on compressor return air pipe is believed
Number input interface is connected, and when environment temperature is too low, low pressure switch contact can be in an off state, and when booting, system will
It cannot start.Therefore, by programming, low pressure switch signal input interface state, core are not detected in the 1min before booting
Piece directly exports and opens signal compressor, compressor start.Compressor is run in 1min, and the pressure of system will be set up.It is low
Come on pressure pressure, low pressure switch contact will be closed, and after 1min, chip starts detection low pressure switch signal input and connects
Mouth state, logically program, carries out protection control to compressor.
In the present invention, sensor is connected with sensor signal input interface on controller, before booting, when sensor detects
When being lower than 12 DEG C to outdoor environment temperature, controller chip is connected and is wrapped on compressor housing by logic judgment, output
Crank heating tape, preheats compressor, and when so as to low temperature, compressor is easy to start up.
For the present invention by the acquisition to signal, feedback arrives controller input interface, controller chip control adjustment air-conditioning system
The state of cooling system operation, it is ensured that reliability service, the invention has the following advantages that
1, it is controlled using cpu chip, condensation fan is controlled, filled between condenser and liquid storage device in refrigeration systems with dress
Middle pressure pressure switch carry out system condensing after force samples, and by cpu chip control condensation fan start and stop；By
The signal before low pressure switch booting on compressor return air pipe, with solve environment temperature it is too low when, at low pressure switch
In when it is disconnected, system cannot start the problem of.Outdoor environment temperature is detected with sensor come to being wrapped under low temperature environment
Crank heating tape on compressor housing is controlled, and when low temperature, is preheated before compressor start to compressor.
2, controller architecture is simple, and liquid crystal display panel is intuitively easy to operate.
3, it is controlled with single-chip microcontroller, at low cost, failure rate is low, safe and reliable.
4, economy, practical.
5, by taking effective control measure, the adaptation for the refrigeration system that temperature change is big and load variations are big is solved
Property.
Detailed description of the invention
Fig. 1 is functional block diagram.
Fig. 2 is structural schematic diagram.
In figure: 1- epoxy resin PCB circuit board, 2-CPU chip 2,3- compressor relay module, 4- condensation fan
Relay module, pressure pressure switching signal input interface in 5- crank heating tape relay module, 6-, 7- low pressure are opened
OFF signal input interface, 8- sensor signal input interface, 9- liquid crystal display panel I/O interface, 10- compressor, 11- are cold
Solidifying blower, 12- crank heating tape, 13-liquid crystal display panels, pressure pressure switch in 14-, 15- low pressure switch, 16-
Sensor.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1 and Figure 2, a kind of cryogenic refrigeration runs controller, is used for cryogenic refrigeration operating system, the cryogenic refrigeration
Operating system includes compressor, condenser, liquid storage device, the crank heating tape 12 being wrapped on compressor case, condenser and storage
Middle pressure pressure switch 14 is installed between liquid device, low pressure switch 15 is installed on compressor return air pipe, outdoor environment is equipped with
The sensor 16 of temperature is detected, controller includes the cpu chip 2 being integrated on circuit board 1, compressor relay module 3, condensation
Blower relay module 4, crank heating tape relay module 5, middle pressure pressure switching signal input interface 6, low pressure switch
Signal input interface 7, sensor signal input interface 8, liquid crystal display panel I/O interface 9, liquid crystal display panel I/O interface 9,
Middle pressure pressure switching signal input interface 6, low pressure switch signal input interface 7, sensor signal input interface 8, compression
Machine relay module 3, condensation fan relay module 4, crank heating tape relay module 5 are connect with cpu chip respectively, wherein
Middle pressure pressure switching signal input interface 6, low pressure switch signal input interface 7, sensor signal input interface 8 are also distinguished
It connects one to one with middle pressure pressure switch, low pressure switch, sensor, compressor relay module 3, condensation fan relay
The electricity for the condensation fan that device module 4, crank heating tape relay module 5 also cooperate with the power end of compressor, condenser respectively
The power end connection of source, crank heating tape, cpu chip 2 are based on middle 14 signal of pressure pressure switch and pass through condensation fan relay
Module 4 controls condensation fan start and stop, and cpu chip 2 is based on 15 signal of low pressure switch and is controlled by compressor relay module 3
Start/stop of compressor, cpu chip 2 are based on 16 signal of sensor and control heat tape start and stop by crank heating tape relay module 5.
Liquid crystal display panel 13, liquid crystal display panel 13 and liquid crystal display panel I/O interface 9 are also integrated on circuit board 1
Connection.
CPU core 2, liquid crystal display panel I/O interface 9, middle pressure pressure switching signal input interface 6, low pressure switch letter
Number input interface 7, sensor signal input interface 8, compressor relay module 3, condensation fan relay module 4, crank add
Tropical relay module 5, liquid crystal display panel 13 are integrated in epoxy resin PCB printed circuit board.
Booting is powered on, cpu chip 2 does not detect 7 state of low pressure switch signal input interface, cpu chip 2 in 1min
Directly to 3 output signal of compressor relay module, relay module 3 obtains electric, contact closure, and compressor 10 works.After 1min,
Cpu chip 2 starts to detect the feedback of low pressure switch 15 to 7 signal condition of low pressure switch signal input interface, according to patrolling
Program is collected, protection control is carried out to compressor, and send on system running state to liquid crystal display panel.
When system condensing pressure is higher than the setting value of middle pressure pressure switch 14, middle 14 contact of pressure pressure switch is in normally closed
State after cpu chip 2 detects middle 6 closure signal of pressure pressure switching signal input interface, gives 4 output signal of relay module,
Relay module 4 obtains electric, contact closure, the operation working properly of condensation fan 11；When condensing pressure is lower than middle pressure pressure switch 14
When setting value, middle 14 contact of pressure pressure switch is in an off state, and cpu chip 2 detects that middle pressure pressure switching signal input connects
After 6 cut-off signals of mouth, stopping gives relay module 4 output signal, 4 power loss of relay module, and condensation fan 15 is out of service；When
When condensing pressure is restored to the setting value of middle pressure pressure switch 14 or more, normally off is restored in the contact of middle pressure pressure switch 14,
After cpu chip 2 detects middle 6 closure signal of pressure pressure switching signal input interface, 4 output signal of relay module, relay are given
Device module 4 obtains electric, contact closure, the operation working properly again of condensation fan 11；Therefore, it is opened by pressure pressure switch 14 in detection
Pass amount feedback, cpu chip 2 pass through logic judgment, control the start-stop of condensation fan 11, ensure that the condensing pressure of system at one
Suitable value.
When sensor 16 detects outdoor environment temperature lower than 12 DEG C, by signal feedback to sensor signal input interface
8, cpu chip 2 passes through logic judgment, gives 5 output signal of relay module, and relay module 5 must be electric, and contact closure, crank adds
The torrid zone 12 is powered, and preheats to compressor 10.
By the acquisition to signal, feedback arrives epoxy resin PCB circuit board input interface, and the logic that establishment is adaptable
Program is controlled, cpu chip will be judged by the program of setting, the state of control adjustment air-conditioning refrigeration system operation, it is ensured that be
System reliability service.
Above embodiments are not limited only to protection scope of the present invention, all to be repaired based on basic thought of the invention
Change or what is changed belongs to protection scope of the present invention.
Claims (4)
1. a kind of cryogenic refrigeration runs controller, it is used for cryogenic refrigeration operating system, which to include compression
Machine, condenser, liquid storage device, the heat tape being wrapped on compressor case are equipped with middle pressure pressure between condenser and liquid storage device
Power switchs, and low pressure switch is equipped on compressor return air pipe, and outdoor environment is equipped with the sensor of detection temperature, and feature exists
In: controller include the cpu chip being integrated on circuit board, signal I/O interface, signal input interface, switching value output module,
The signal I/O interface, signal input interface, switching value output module are connect with cpu chip respectively, wherein signal input interface
It is also connect respectively with middle pressure pressure switch, low pressure switch, sensor, switching value output module is also cold with condenser cooperation
The power end connection of the solidifying power end of blower, the power end of compressor, heat tape, cpu chip are based on middle pressure pressure switch letter
Number by switching value output module control condensation fan start and stop, cpu chip be based on low pressure switch signal by switching value it is defeated
Module controls start/stop of compressor out, and cpu chip is based on sensor signal and controls heat tape start and stop by switching value output module.
2. a kind of cryogenic refrigeration according to claim 1 runs controller, it is characterised in that: be also integrated with liquid on circuit board
LCD panel, liquid crystal display panel are connect with signal I/O interface.
3. a kind of cryogenic refrigeration according to claims 1 and 2 runs controller, it is characterised in that: cpu chip, signal I/O
Interface, signal input interface, switching value output module, liquid crystal display panel are integrated in epoxy resin PCB printed circuit board.
4. a kind of cryogenic refrigeration according to claim 1 runs controller, it is characterised in that: the switching value output module
For relay module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048570.0A CN109724338A (en) | 2019-01-18 | 2019-01-18 | A kind of cryogenic refrigeration operation controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048570.0A CN109724338A (en) | 2019-01-18 | 2019-01-18 | A kind of cryogenic refrigeration operation controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109724338A true CN109724338A (en) | 2019-05-07 |
Family
ID=66299181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910048570.0A Withdrawn CN109724338A (en) | 2019-01-18 | 2019-01-18 | A kind of cryogenic refrigeration operation controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109724338A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112172458A (en) * | 2020-10-19 | 2021-01-05 | 珠海格力电器股份有限公司 | Air conditioner |
| CN113631013A (en) * | 2021-06-22 | 2021-11-09 | 成都凯天电子股份有限公司 | High-reliability aviation airborne electronic system capable of working at ultralow temperature |
-
2019
- 2019-01-18 CN CN201910048570.0A patent/CN109724338A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112172458A (en) * | 2020-10-19 | 2021-01-05 | 珠海格力电器股份有限公司 | Air conditioner |
| CN112172458B (en) * | 2020-10-19 | 2022-03-01 | 珠海格力电器股份有限公司 | Air conditioner |
| CN113631013A (en) * | 2021-06-22 | 2021-11-09 | 成都凯天电子股份有限公司 | High-reliability aviation airborne electronic system capable of working at ultralow temperature |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190507 |