KR19990034768U - Temperature, Pressure, Power controls and defrost automatic operating refrigeration system - Google Patents

Abstract

It is a technical field of air conditioning refrigeration machine, and it is designed to reduce and express the refrigerating device and automatic control device (power, temperature, pressure) of industrial largely and complicatedly composed.

Theory and practice (practical) educational equipment consisting of the refrigeration unit of the refrigerator and the automatic control (power, temperature, pressure) device to see, hear by ear, touch the device, operate the valve, and automatically control (power, temperature, pressure). ) By connecting the device to the refrigeration device by using a pana tweet, a set of educational equipment is used for manual operation of the freezer, manual defrosting of the freezer (heat transfer defrosting and hot gas defrosting), automatic operation of freezing temperature control of the freezer, Automatic operation of evaporation temperature control and defrost (hot gas and heat transfer), automatic operation of evaporator temperature control and pressure (high and low pressure) control of the freezer, evaporation temperature and pressure control of the freezer and automatic operation of defrosting step by step It is designed to be.

Pressure gauges and thermometers are attached to the inlet and outlet of the main equipment of the freezer to measure the temperature and pressure changes of the freezer during operation. have.

The automatic control device equipped with the automatic control mechanism can carry out electric power wiring practical (practical) education including single phase and three phase as well as the refrigeration operation circuit, and can easily understand quickly because it uses pana tweet without using a vinyl wire. It is economical because it can save a lot of training materials cost.

The refrigeration unit includes a refrigeration unit, airtight test, vacuum drying, refrigerant charge, refrigerant leakage inspection, refrigerant recovery, expansion valve installation, heat exchanger installation, dryer regeneration and exchange, Freezer manufacturing, repair, inspection, integration and calculation training (practice) training, such as pressure switch operation test and adjustment, superheat and overcooling measurement, can be performed. Suitable for educational equipment in technical field.

The above equipment was selected after the certification of the auditor (professional staff) at the National Enterprises and Educational Institutions' Educational Aid Contest hosted by the Korea Human Resources Development Service in 1998 and received the Minister of Labor's Commendation.

[Index]

1. Terminal (Power) 2. NFB Switch (for 3-phase) 3. NFB Switch (for Single-phase) 4. Ammeter 5. Voltmeter 6. Magnetic Switch (5a2b) 7. Overload Breaker 8. Terminal (Power) 9. Power Lamp (PL) 10. Stop light (RL) 11. Driving light (GL) 12. Emergency light (YL) 13. Defrost light (WL) 14. Spare light (YL) 15. Emergency bell (overload operation) 16. Select Switch (On.Off) 17. Push Button Switch (Stop, Start) 18. Condenser 휀 Motor Speed Controller 19. Evaporator 휀 Motor Speed Controller 20. Temperature Controller for Evaporation Temperature Control 21. Timer (60s-8pin) 22. Relay ( 8pin) 23. High Pressure Disconnect Switch (HPS) 24. Low Pressure Disconnect Switch (LPS) 25. Condensation Pressure Control Switch 26. Defrost Timer (for 24 hours) 27. Digital Thermometer for Evaporating Temperature Measurement 28. Hermetic Compressor (1/2) Horsepower) 29. Refrigerant check valve 30. Condenser (휀 coil type) 31. Condenser fan and motor 32. Fluid receiver 33. Service valve 34. Bypass piping 35. Stop valve 36. Filter dry 37. Solenoid valve (S.V1: for operation, S.V2: for hot gas defrosting) 38. Liquid level meter (site glass) 39. Heat exchanger 40. Temperature automatic operation expansion valve (TEV) 41. Hot gas defrosting hole 42 Hot gas defrost piping 43. Evaporator (coil type) 44. Evaporator fan and motor 45. Heat transfer defrost heater 46. Liquid separator ⓟ: Pressure gauge ⓣ: Thermometer

Description

Temperature, pressure, power automatic control and defrost automatic operation refrigeration system {Temperature, Pressure, Power controls and defrost automatic operating refrigeration system}

Theory and practice (practical) educational equipment consisting of the refrigeration unit of the refrigerator and the automatic control (power, temperature, pressure) device to see, hear by ear, touch the device, operate the valve, and automatically control (power, temperature, pressure). ) By connecting the device with the refrigeration device by using the pananat, the circuit is composed by manual defrosting (heat transfer defrosting, hot gas defrosting) operation by using a set of refrigerating device and automatic control device, automatic operation of freezing temperature control of the refrigerator, evaporation of the freezer Automatic control of temperature control and defrosting (hot gas, heat transfer), automatic control of evaporator temperature and pressure (high and low pressure) control of refrigerator, evaporation temperature and pressure of refrigerator and automatic operation of defrost.

Pressure gauges and thermometers are attached to the inlet and outlet of the main equipment of the refrigeration system to measure the temperature change and pressure change of the freezer during operation of the freezer. Do it.

The automatic control device in which the automatic control mechanism is arranged can provide not only the above-mentioned refrigeration operation circuit but also electric power wiring practice (practice) training including single phase and three phase, and can also be easily and quickly understood by utilizing pana tweet without using vinyl wire. It is economical because it can save a lot of training material cost.

The refrigeration unit has airtightness test, vacuum drying, refrigerant charge, refrigerant leakage inspection, refrigerant recovery, expansion valve installation, heat exchanger installation, dryer defrost and exchange, pressure switch It is designed to provide hands-on (practical) education such as operation test and adjustment, measurement of superheat and supercooling, manufacturing, repair, inspection, and integration of refrigerators, especially in the field of refrigeration technology, which is a pilot event of the International Functional Olympics and National Skills Competition. It can be used as educational equipment.

By developing and distributing the above-mentioned equipments, it is intended to promote the technological development of domestic industries and educational institutions, and to manufacture and distribute them to domestic and foreign related educational institutions (heat / fluid, air conditioning refrigeration, electric power wiring, sensor automatic control). It was.

It is a technical field of air conditioning refrigeration machine. Most of them have reduced, expressed, and set up the refrigerating device and automatic control device of large-scale and complex industries.

It is a small unit that combines the refrigeration unit and the automatic control unit. It operates the valve of the refrigeration unit to control the flow of the refrigerant, change the flow direction of the refrigerant, and automatically control the power, temperature and pressure of the automatic control unit. According to the automatic operation condition, it can be operated directly by pananat and it can be performed from basic automatic operation to application automatic control automatic operation according to the driving circuit, so that the technical ability is improved for workers, industrial institutions, educators and trainees of this industry. do.

Refrigeration operation can be performed by operating the circuit connection of the automatic control to the refrigeration unit with pananat, so it is economical because it is easy to understand in a short time and does not use vinyl wire.

By measuring the temperature change and the pressure change of the refrigerating device, it is possible to calculate various thermal input and output by drawing the refrigeration diagram, so it can be used as equipment for design, inspection, adjustment, and inspection necessary for the manufacture of the freezer.

Practical training needed to build a freezer was provided.

The automatic control device makes it possible to quickly and easily understand electric power wiring practice training as well as automatic control related to refrigeration.

1 is an overall stereoscopic view of the apparatus

2 is a representative view of the apparatus

3 is a refrigerant flow diagram and a circuit diagram of a start and stop refrigerating device;

4 is a refrigerant flow diagram and a circuit diagram of an electrothermal defrost refrigeration apparatus

5 is a refrigerant flow diagram and a circuit diagram of a hot gas defrosting refrigeration apparatus

6 is a refrigerant flow diagram and a circuit diagram of an evaporation temperature control automatic operation refrigeration apparatus

7 is a refrigerant flow diagram and a circuit diagram of an evaporation temperature control and a heat transfer defrost automatic operation refrigeration apparatus

8 is a refrigerant flow diagram and automatic control circuit diagram of the evaporation temperature control and hot gas defrost automatic operation refrigeration apparatus

9 is a refrigerant flow diagram and an automatic control circuit diagram of an evaporation temperature control and a pressure (high pressure and low pressure) controlled automatic operation refrigeration apparatus;

10 is a refrigerant flow chart and an automatic control circuit diagram of an evaporation temperature control, a pressure (high pressure and low pressure) control, and an automatic operation refrigeration apparatus for electric heating defrost.

11 is a refrigerant flow chart and automatic control circuit diagram of an evaporation temperature control, a pressure (high pressure and low pressure) control and a hot gas defrosting automatic operation refrigeration apparatus;

Automatic control and power wiring training panel and refrigeration system were installed in one equipment die.

The panel for the practice of automatic control and power wiring consists of the main circuit, auxiliary circuit, and automatic control circuit of the refrigeration sensor so that the refrigeration operation circuit and other electric power wiring can be widely practiced using single-phase and three-phase power.

The main circuit part was separately attached with single-phase and three-phase overcurrent breakers (N.F.B), ammeters, voltmeters, three magnetic contactor (magnetic) switches (5a2b), and thermal relays.

Auxiliary circuit part has power light, stop light, driving light, emergency light, defrost etc on the upper part, and 3 select switches and 4 push button switches (stop, drive) attached to the lower part, and the refrigeration at the bottom part. Condenser 내 Motor speed controller lever, evaporator 휀 Motor speed controller lever, temperature controller for evaporation temperature control, 2 timers (8 seconds for 60 seconds), 2 relays (8 pins) A switch (LP S), a high pressure shut-off switch (HP S), a condensing pressure control pressure switch, a defrost timer (for 24 hours), and a digital thermometer for measuring evaporation temperature were attached.

All the above control devices are configured to be connected to each other by pananat, and the refrigerator operation circuit and electric power wiring circuit to be configured can be directly decorated with pananat without using vinyl wires.

The main equipment of the refrigerator consists of compressor, condenser, receiver, temperature automatic operation expansion valve, evaporator, and liquid separator. The accessories include low pressure cutoff switch (attached to the automatic control panel) and high pressure cutoff switch (attached to the automatic control panel). , Pressure switch for condensing pressure control (attached to the automatic control panel), evaporator 휀 motor speed controller (lever is attached to the automatic control panel), condenser 휀 motor speed controller (lever is attached to the automatic control panel), filter dryer (1 main pipe) , 1 bypass pipe), stop valve (2 main pipes, 2 bypass pipes), 2 liquid level gauges (site glass), solenoid valve (1 main pipe, 1 hot gas pipe), defrosting hole (hot gas) Pipe), heat exchanger, and a pressure gauge and a temperature measuring inlet are attached to the inlet and outlet of the refrigerator.

The automatic control device and the refrigeration device described above are designed to reduce and express the industrial refrigeration device and the automatic control device (power, temperature, and pressure) of a large scale and complex structure. The theory and practical education are visual, auditory, sensory and perceptual. It is configured to be easy and understandable in a short time, and it is possible to use a set of refrigerating devices and automatic control devices by constructing a circuit by connecting the refrigeration device with pananat and manipulating the value control unit. From the manual operation of the refrigerator to automatic operation and defrosting operation was configured to be carried out step by step according to the difficulty.

Pressure gauges and thermometers were attached to the inlet and outlet of the main equipment of the refrigeration system to measure the temperature change and pressure change of the freezer during the operation of the freezer, and to plot the freezing diagram.

The automatic control device in which the automatic control mechanism is arranged can provide not only the above-mentioned refrigeration operation circuit but also electric power wiring practice (practice) training including single phase and three phase, and also uses pana tweets without using vinyl wires, so it is easy and quick. It is configured to understand, and the refrigeration system has airtight tests, vacuum drying, refrigerant charging, refrigerant leakage inspection, refrigerant recovery, expansion valve installation and adjustment, heat exchanger installation, dryer regeneration and exchange for practical (practical) education on manufacturing a refrigerator. Freezer manufacturing, repair, inspection, integration, calculation (practical) education, such as pressure switch operation test and adjustment, superheat and overcooling measurement, etc. can be performed by hand. Especially, international skill Olympic and national skill competition refrigeration technology It is configured to be suitable for educational equipment in the field

We expected the visual, auditory, perceptual, and sensory learning effects in the theory and practice classes of related educational subjects.

Complex, concealed refrigeration unit and automatic control can be miniaturized, expressed, and set up for easy movement and can be utilized anywhere and anytime.

The circuit is formed by connecting the refrigeration unit and the automatic control device with pananat, so it can be easily understood and configured in a short time, and if it is misconfigured, it can be corrected immediately.

It is economical because it can save a lot of material costs for training because it uses non-consumable panana tweets instead of using vinyl wires.

Refrigerator operating circuit configuration and electrical (including single and three phase) power wiring exercises can be conducted step by step, depending on the difficulty.

Since the temperature and pressure of each part can be measured during the operation of the refrigerator, the freezer diagram can be plotted to calculate the calorific value and to provide practical training for design operation, integration, inspection, and repair necessary for the operation of the refrigerator and the manufacture of the refrigerator.

It is designed to be easy to configure and operate the freezer, and it is especially designed to be suitable as educational equipment in the field of refrigeration technology in the International Skills Olympics and National Skills Competitions.

Claims (10)

A small refrigeration unit and automatic control device set designed to be operated by constructing a refrigeration driving circuit utilizing a panana tweet, including the following contents and drawings. Automatic control and power wiring training panel and refrigeration system were installed in one equipment die. The panel for the practice of automatic control and power wiring consists of the main circuit, auxiliary circuit, and automatic control circuit of the refrigeration sensor so that the refrigeration operation circuit and the electric power wiring can be widely practiced using single and three phase power. The main circuit part was separately attached with single-phase and three-phase overcurrent breakers (N.F.B), ammeters, voltmeters, three magnetic contactor (magnetic) switches (5a2b), and thermal relays. Auxiliary circuit part has power light, stop light, driving light, emergency light, defrost etc on the upper part, and 3 select switches and 4 push button switches (stop, drive) attached to the lower part, and the refrigeration at the bottom part. Condenser Motor speed regulator lever, Evaporator 휀 Motor speed regulator lever, Temperature controller for evaporation temperature control, 2 timers (8 seconds for 60 seconds), 2 relays (8 pins) A switch (LP S), a high pressure shut-off switch (HP S), a condensing pressure control pressure switch, a defrost timer (for 24 hours), and a digital thermometer for measuring evaporation temperature were attached. All the above control devices are configured to connect with each other by pananat, and the refrigerator operation circuit and electric power wiring circuit to be configured can be directly decorated with pananat without using vinyl wires. The main equipment of the refrigerator consists of compressor (1/3 ~ 1 horsepower sealed type), condenser, receiver, temperature automatic expansion valve, evaporator, liquid separator, and accessories include low pressure shut-off switch (attached to the automatic control panel), high pressure. Isolation switch (attached to the automatic control panel), pressure switch for condensation pressure control (attached to the automatic control panel), evaporator 휀 motor speed controller (lever is attached to the automatic control panel), condenser 휀 motor speed controller (lever is attached to the automatic control panel) Filter dryer (1 main pipe, 1 bypass pipe), stop valve (2 main pipes, 2 bypass pipes), 2 liquid level gauges (site glass), solenoid valve (1 main pipe, hot gas pipe 1) G), defrosting hole (hot gas pipe) and heat exchanger were installed, and pressure gauge and temperature measurement insertion hole were attached to the inlet and outlet of the main equipment of the refrigerator. A hot gas piping line was installed to induce high pressure gas from the compressor discharge side for hot gas defrosting, and a solenoid valve was installed on the hot gas piping line to be opened and closed by a 24-hour timer for defrosting. Was installed. Heat transfer heater was attached inside the coil-type evaporator tube so that it could be connected to the 24 hours timer for defrosting, and it was configured to enable heat transfer defrost. The automatic control device and the refrigeration device described above are designed to reduce and express the industrial refrigeration device and the automatic control device (power, temperature, and pressure) of a large scale and complex structure. The theory and practical education are visual, auditory, sensory and perceptual. It is configured to be easy and understandable in a short time. By operating the valve and connecting the automatic control (power, temperature, pressure) device with the freezer by using the pana tweet, the circuit is configured to utilize a set of freezing device and automatic control device. It was configured to be carried out step by step from manual operation of the refrigerator to automatic operation and defrosting operation. Pressure gauges and thermometers were attached to the inlet and outlet of the main equipment of the freezer. The automatic control device equipped with the automatic control mechanism is configured to connect and conduct electric power wiring practical (practical) education including single phase and three phase as well as refrigeration operation circuit. Starting and stopping refrigeration cycle drawing and power control circuit operated by constructing a circuit with pananat using the apparatus set of claim 1 The electric heating defrost refrigeration operation refrigeration cycle drawings and power control circuit according to claim 2 The hot gas defrost freezing operation refrigeration cycle diagram and power control circuit according to claim 2 Evaporative temperature control automatic operation refrigeration cycle drawing and power and temperature control circuit operated by using the device set of claim 1 The evaporation temperature control and automatic heating defrosting automatic refrigeration cycle drawings and power, temperature, heat transfer defrosting control circuit according to claim 5 The evaporating temperature control and hot gas defrosting automatic operation refrigeration cycle drawings and power, temperature, hot gas defrosting operation control circuit according to claim 5 Evaporating temperature control, pressure control (high pressure and low pressure) automatic operation, which is operated by constructing a circuit with pananat using the apparatus set of claim 1 9. The evaporation temperature control, pressure control and automatic defrosting automatic operation refrigeration cycle drawing and power, pressure, temperature and heat defrosting operation control circuit according to claim 8 The evaporation temperature control, pressure control and hot gas defrosting automatic operation refrigeration cycle drawings and power, pressure, temperature and hot gas defrosting operation control circuit according to claim 8