CN113803818A - High-temperature-resistant anti-condensation air-conditioning refrigeration system - Google Patents

High-temperature-resistant anti-condensation air-conditioning refrigeration system Download PDF

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Publication number
CN113803818A
CN113803818A CN202111227191.1A CN202111227191A CN113803818A CN 113803818 A CN113803818 A CN 113803818A CN 202111227191 A CN202111227191 A CN 202111227191A CN 113803818 A CN113803818 A CN 113803818A
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CN
China
Prior art keywords
pipeline
condenser
valve
exit end
refrigeration system
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Pending
Application number
CN202111227191.1A
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Chinese (zh)
Inventor
刘益萍
万士军
柴恒炜
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Hefei Swan Refrigeration Technology Co Ltd
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Hefei Swan Refrigeration Technology Co Ltd
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Priority to CN202111227191.1A priority Critical patent/CN113803818A/en
Publication of CN113803818A publication Critical patent/CN113803818A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a high-temperature-resistant anti-condensation air-conditioning refrigeration system which comprises a compressor, a condenser, a liquid storage device, a filter, an expansion valve, an evaporator, an internal circulation condenser, a gas-liquid separator, a proportion regulating valve, a pressure sensor, a stop valve A, a stop valve B, a check valve, a condensing fan, an evaporating fan, a temperature and humidity sensor A, B, C, a pressure protector, a needle valve A and a needle valve B. The invention effectively solves the problem of condensation and has good market application value; high-temperature reliable refrigeration work is realized, and air conditioning can be efficiently realized; the detection and the maintenance are convenient; the refrigeration system can be effectively protected, and the method is safe and reliable.

Description

High-temperature-resistant anti-condensation air-conditioning refrigeration system
Technical Field
The invention relates to the field of air-conditioning refrigeration systems, in particular to a high-temperature-resistant anti-condensation air-conditioning refrigeration system.
Background
With the scientific and technological progress and the rapid development of the industrial level, special high-power heating electronic equipment has been advanced into various industries, such as steel mill cutting equipment, high-power radar transceiver equipment, high-power supply equipment and the like, and various air cooling equipment is put into use successively, but because the cold air temperature is improper, when the cold air temperature is too low, or the cooled heating equipment is subjected to the change of the environmental temperature and humidity, a large amount of condensed water is generated on the cooled heating electronic equipment, so that the cooled heating electronic equipment is abnormal in operation, or internal circuits are burnt, and therefore the problem of the condensed water generation of the heating electronic equipment must be solved.
Generally, air-cooled cooling equipment improves the set cold air temperature or adopts auxiliary electric heating to improve the cold air temperature, and the set cold air temperature is improved to avoid a large amount of condensed water of cooled and heated electronic equipment, but the cooled and heated electronic equipment cannot adapt to the change of four-grade climate in one year; the auxiliary electric heating can improve the temperature of cold air, condensation can be controlled, energy is not saved, and special heating equipment with requirements on power supply cannot meet the requirements.
Because the environment temperature of the special heating electronic equipment is very severe, the special heating electronic equipment still needs to normally work at the environment temperature of more than 55 ℃, and a common refrigeration air-conditioning system is difficult to normally work without special treatment. And the air-conditioning refrigeration system matched with the special industry requires that the maintenance and the refrigerant filling are convenient when the sensor is overhauled and the system is filled with the refrigerant, but the existing refrigeration air-conditioning system can not meet the requirement.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant anti-condensation air-conditioning refrigeration system, which aims to solve the problem that the air-conditioning refrigeration system for electronic equipment in the prior art is easy to condense.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
high temperature resistant condensation-proof air-conditioning refrigeration system, which comprises a compressor (1), a condenser (2), a liquid storage device (3), a filter (4), an expansion valve (5), an evaporator (6) and a gas-liquid separator (8), wherein the outlet end of the compressor (1) is connected with the inlet end of the condenser (2) through a pipeline, the outlet end of the condenser (2) is connected with the inlet end of the liquid storage device (3) through a pipeline, the outlet end of the liquid storage device (3) is connected with the inlet end of the filter (4) through a pipeline, the outlet end of the filter (4) is connected with the inlet end of the expansion valve (5) through a pipeline, the outlet end of the expansion valve (5) is connected with the inlet end of the evaporator (6) through a pipeline, the outlet end of the evaporator (6) is connected with the inlet end of the gas-liquid separator (8) through a pipeline, the outlet end of the gas-liquid separator (8) is connected with the inlet end of the compressor (1) through a pipeline, and the internal circulation condenser (7), the internal circulation condenser (7) and the evaporator (6) are coupled into a whole and share the evaporation fan (15); the utility model discloses a condenser, including compressor (1) exit end, condenser (2), inlet end, pipeline intercommunication, wherein proportional control valve (9) inlet end connection compressor (1) exit end, outlet end connection condenser (2) entrance point are connected to the pipeline intercommunication between compressor (1) exit end and condenser (2) entrance point, draw forth the entrance connection of pipeline and a stop valve B (12) all the way between proportional control valve (9) and condenser (2), the exit end of stop valve B (12) pass through the pipeline with the entrance connection of inner loop condenser (7), the exit end of inner loop condenser (7) passes through the entrance connection of pipeline and a check valve (13), and the exit end of check valve (13) passes through the pipeline bypass and connects the pipeline between condenser (2) exit end, reservoir (3) entrance point.
Furthermore, the proportional control valve (9) is connected with a stop valve A (11) in parallel, wherein the inlet end of the stop valve A (11) is connected with the inlet end of the proportional control valve (9) through a pipeline bypass, and the outlet end of the stop valve A (11) is connected with the outlet end of the proportional control valve (9) through a pipeline bypass.
Furthermore, the air conditioner also comprises a temperature sensor A (16), a temperature sensor B (17) and a temperature sensor C (18), wherein the temperature sensor A (16) is arranged on the air return side of the evaporator (6), the temperature sensor B (17) is arranged on the air supply side of the evaporation fan (15), and the temperature sensor C (18) is arranged on the air inlet side of the condenser (2).
Furthermore, a pipeline bypass between the outlet end of the condenser (2) and the inlet end of the liquid reservoir (3) is connected with a pressure sensor (10), and a pipeline bypass between the outlet end of the evaporator (6) and the inlet end of the gas-liquid separator (8) is connected with a pressure protector (19).
Further, pipeline bypass is connected with needle valve A (20) between condenser (2) exit end and reservoir (3) entrance point, pressure sensor (10) integrated connection is in needle valve A (20).
Furthermore, a needle valve B (21) is connected between the outlet end of the evaporator (6) and the inlet end of the gas-liquid separator (8) in a bypass mode.
The high-temperature-resistant anti-condensation air-conditioning refrigeration system can change the set air outlet temperature of the air supply equipment through the adjustment of the internal circulation condenser (7) according to the real-time detected current environment temperature and humidity of the cooled equipment, thereby avoiding the condensation phenomenon of the cooled equipment and enabling the cooled equipment to be in a perfect operation environment state.
The high-temperature-resistant condensation-preventing air-conditioning refrigeration system can detect the condensation pressure of the cooled equipment in real time through the pressure sensor (10), feed the condensation pressure back to the proportion regulating valve (9), regulate the amount of the refrigerant entering the internal circulation condenser (7), reduce the condensation pressure and enable the cooled equipment to be in a perfect and efficient running environment state.
The high-temperature-resistant anti-condensation air-conditioning refrigeration system has the advantages that the outlet of the condenser (2) is divided into two paths to enter the needle valve A (20) through the pipeline, the pressure sensor (10) is fixed on the needle valve A (20), and the pressure sensor is convenient to maintain and repair. The outlet of the evaporator (6) is divided into two paths to enter a needle valve B (21) through a pipeline, so that the system can be conveniently filled with refrigerant.
The high-temperature-resistant anti-condensation air-conditioning refrigeration system is characterized in that a pressure protector (19) is additionally arranged at the inlet end of a gas-liquid separator (8), and the low pressure of the refrigeration system is protected and fed back to an external control unit to control the on-off of a refrigeration compressor (1).
Compared with the prior art, the invention has the advantages that:
1) the problem of condensation is effectively solved, and the method has good market application value;
2) high-temperature reliable refrigeration work is realized, and air conditioning can be efficiently realized;
3) the detection and the maintenance are convenient;
4) the refrigeration system can be effectively protected, and the method is safe and reliable.
Drawings
FIG. 1 is a system block diagram of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, the high temperature resistant condensation-proof air conditioning refrigeration system of the present invention includes a compressor 1, a condenser 2, a liquid reservoir 3, a filter 4, an expansion valve 5, an evaporator 6, an internal circulation condenser 7, a gas-liquid separator 8, a proportional regulating valve 9, a pressure sensor 10, a stop valve a11, a stop valve B12, a check valve 13, a condensing fan 14, an evaporating fan 15, a temperature and humidity sensor a16, a temperature and humidity sensor B17, a temperature and humidity sensor C18, a pressure protector 19, a needle valve a20, and a needle valve B21. Wherein:
the outlet end of the compressor 1 is divided into E, F paths. Wherein the E way is connected with the inlet end of the proportion regulating valve 9 through a pipeline, the outlet end of the proportion regulating valve 9 is divided into C, D two ways, the C way is connected with the inlet end of the condenser 2 through a pipeline, the outlet end of the condenser 2 is connected with the inlet end of the liquid storage device 3 through a pipeline, the outlet end of the liquid storage device 3 is connected with the inlet end of the filter 4 through a pipeline, the outlet end of the filter 4 is connected with the inlet end of the expansion valve 5 through a pipeline, the outlet end of the expansion valve 5 is connected with the inlet end of the evaporator 6 through a pipeline, the outlet of the evaporator 6 is connected with the inlet end of the gas-liquid separator 8 through a pipeline, the outlet end of the gas-liquid separator 8 is connected with the inlet end of the compressor 1 through a pipeline, and therefore a refrigeration cycle loop of the compressor is formed.
The outlet end D path of the proportional control valve 9 is connected with the inlet end of a stop valve B12 through a pipeline, the outlet end of the stop valve B12 is connected with the inlet end of an internal circulation condenser 7 through a pipeline, the outlet end of the internal circulation condenser 7 is connected with the inlet end of a check valve 13 through a pipeline, and the outlet end of the check valve 13 is connected with the inlet end of a liquid storage device 3 through a pipeline, so that a condensation and high-temperature working condition preventing adjusting system of the compression refrigeration system is formed.
The path F of the outlet end of the compressor 1 is connected with the inlet end of a stop valve A11 through a pipeline, and the outlet end of the stop valve A11 is connected with the inlet end of the condenser 2 through a pipeline.
A needle valve A20 is also connected between the outlet end of the condenser 2 and the liquid reservoir 3 in a bypass way, and a needle valve B21 is also connected between the outlet end of the evaporator 6 and the gas-liquid separator 8 in a bypass way. Temperature and humidity sensors A16, B17 and C18 are respectively arranged at the return air of the evaporator 6, the air supply of the evaporation fan 15 and the condensation air inlet of the condenser 2, and a pressure protector 19 is connected to a pipeline between the evaporator 6 and the gas-liquid separator 8 in a bypass mode.
The heat released by the condenser 2 is recycled to the atmosphere by a condensing fan 14.
In the present invention, the evaporator 6 and the internal circulation condenser 7 are coupled together to share the evaporation fan 15. The check valve 14 allows the refrigerant to flow only in one direction, i.e., from the internal circulation condenser 7 toward the check valve. The pressure sensor 10 is integrally connected to the needle valve a 20.
The invention is further described below with reference to the accompanying drawings:
when the refrigeration system works, the compressor 1 works to compress refrigerant into high-temperature high-pressure gas, the high-temperature high-pressure gas enters the condenser 2 through the proportion regulating valve 9, the condenser 2 is cooled into liquid after heat exchange with forced convection air, the liquid enters the liquid storage device 3, the liquid enters the expansion valve 5 after passing through the filter 4, the low-temperature low-pressure refrigerant liquid is obtained after throttling, the liquid enters the evaporator 6 and is converted into gas after heat exchange, the gas and liquid are separated in the gas-liquid separator 8 and then enter the compressor 1 again, the circulation is repeated, and meanwhile, the evaporation fan 14 and the condensation fan 15 work continuously to perform forced convection heat exchange, so that refrigeration is realized.
When the unit is in dehumidification operation, the circulating air in the cabin is cooled and cooled when passing through the surface of the evaporator 6. When the temperature is lower than the saturation temperature of the air at the moment, water vapor contained in the air is condensed into water drops on the surface of the evaporator 6 to be separated out and is discharged, the moisture content in the air is reduced, the indoor temperature is simultaneously reduced while the moisture content is reduced, in order to prevent the indoor temperature from being further reduced, hot gas bypass is adopted to enter the internal circulation condenser 7 through the proportion adjusting valve 9 for adjusting the refrigerating capacity finally output by the air conditioner, the relative humidity of the air supply of the air conditioner is reduced, the condensation phenomenon is effectively prevented, the refrigerant is condensed in the hot gas bypass and then is supplied to the evaporator 6 together with the refrigerant in the condenser 2, and the working state of the evaporator is not changed, so that the evaporator is guaranteed to always exert the maximum refrigerating capacity, and the dehumidifying capacity of the air conditioner is always kept at the maximum state.
When the unit is in high-temperature (such as when the inlet air temperature is more than 55 ℃) refrigeration operation, the condensation temperature and the condensation pressure are high due to the high temperatures of the condensation inlet air and the evaporation inlet air, the heat load of the compressor is increased, the compressor is possibly protected, the refrigeration operation is abnormal, when the condensation pressure is more than 25bar, hot air is used for bypassing and enters the internal circulation condenser 7 through the proportion adjusting valve 9 to adjust the condensation pressure of the air conditioner, and the working state of the evaporator 6 is not changed, so that the evaporator 6 is ensured to always exert the maximum refrigeration capacity. High-temperature refrigeration and maximum refrigeration capacity exertion are realized.
Under the normal condition, the air conditioner adopts ratio control valve 9 to adjust, breaks down when ratio control valve 9, and when the unable normal operating of air conditioner, opens stop valve A12 to close stop valve 13, refrigerating system converts conventional state, guarantees that it can normal refrigeration work.
The temperature and humidity sensors A16, B17 and C18 detect the current return air, supply air and environment temperature and humidity in real time and feed back the current return air, supply air and environment temperature and humidity to the control unit, the control unit automatically compares the return air temperature with the set temperature (T0), when the return air temperature reaches the set temperature, the compressor 1 stops working, the refrigeration system stops working, and the evaporation fan 15 continues working and ventilating. When the relative humidity of the return air is more than 60%, the proportional control valve 9 is started to adjust the amount of the refrigerant entering the internal circulation condenser 7, the output refrigerating capacity is controlled, and then the relative humidity of the air conditioner is adjusted. When the pressure sensor C10 detects that the condensing pressure is more than 25bar (the value is adjusted according to the difference of the refrigerant), the proportional regulating valve 9 is started to regulate the amount of the refrigerant entering the internal circulation condenser 7, and the condensing pressure is controlled.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.

Claims (6)

1. The high temperature resistant anti-condensation air-conditioning refrigeration system comprises a compressor (1), a condenser (2), a liquid storage device (3), a filter (4), an expansion valve (5), an evaporator (6) and a gas-liquid separator (8), compressor (1) exit end passes through pipeline and condenser (2) entrance connection, condenser (2) exit end passes through pipeline and reservoir (3) entrance connection, reservoir (3) exit end passes through pipeline and filter (4) entrance connection, filter (4) exit end passes through pipeline and expansion valve (5) entrance connection, expansion valve (5) exit end passes through pipeline and evaporimeter (6) entrance connection, evaporimeter (6) exit end passes through pipeline and vapour and liquid separator (8) entrance connection, vapour and liquid separator (8) exit end passes through pipeline and compressor (1) entrance connection, its characterized in that: the evaporator is characterized by also comprising an internal circulation condenser (7), wherein the internal circulation condenser (7) and the evaporator (6) are coupled into a whole and share an evaporation fan (15); the utility model discloses a condenser, including compressor (1) exit end, condenser (2), inlet end, pipeline intercommunication, wherein proportional control valve (9) inlet end connection compressor (1) exit end, outlet end connection condenser (2) entrance point are connected to the pipeline intercommunication between compressor (1) exit end and condenser (2) entrance point, draw forth the entrance connection of pipeline and a stop valve B (12) all the way between proportional control valve (9) and condenser (2), the exit end of stop valve B (12) pass through the pipeline with the entrance connection of inner loop condenser (7), the exit end of inner loop condenser (7) passes through the entrance connection of pipeline and a check valve (13), and the exit end of check valve (13) passes through the pipeline bypass and connects the pipeline between condenser (2) exit end, reservoir (3) entrance point.
2. The high temperature resistant anti-condensation air conditioning refrigeration system according to claim 1, characterized in that: the proportional control valve (9) is connected with a stop valve A (11) in parallel, wherein the inlet end of the stop valve A (11) is connected with the inlet end of the proportional control valve (9) through a pipeline bypass, and the outlet end of the stop valve A (11) is connected with the outlet end of the proportional control valve (9) through the pipeline bypass.
3. The high temperature resistant anti-condensation air conditioning refrigeration system according to claim 1, characterized in that: the air conditioner is characterized by further comprising a temperature sensor A (16), a temperature sensor B (17) and a temperature sensor C (18), wherein the temperature sensor A (16) is arranged on the air return side of the evaporator (6), the temperature sensor B (17) is arranged on the air supply side of the evaporation fan (15), and the temperature sensor C (18) is arranged on the air inlet side of the condenser (2).
4. The high temperature resistant anti-condensation air conditioning refrigeration system according to claim 1, characterized in that: a pipeline bypass between the outlet end of the condenser (2) and the inlet end of the liquid reservoir (3) is connected with a pressure sensor (10), and a pipeline bypass between the outlet end of the evaporator (6) and the inlet end of the gas-liquid separator (8) is connected with a pressure protector (19).
5. The high temperature resistant anti-condensation air conditioning refrigeration system according to claim 4, characterized in that: pipeline bypass is connected with needle valve A (20) between condenser (2) exit end and reservoir (3) entrance point, pressure sensor (10) integrated connection is in needle valve A (20).
6. The high temperature resistant anti-condensation air conditioning refrigeration system according to claim 1, characterized in that: and a needle valve B (21) is connected between the outlet end of the evaporator (6) and the inlet end of the gas-liquid separator (8) through a pipeline in a bypass manner.
CN202111227191.1A 2021-10-21 2021-10-21 High-temperature-resistant anti-condensation air-conditioning refrigeration system Pending CN113803818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111227191.1A CN113803818A (en) 2021-10-21 2021-10-21 High-temperature-resistant anti-condensation air-conditioning refrigeration system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111227191.1A CN113803818A (en) 2021-10-21 2021-10-21 High-temperature-resistant anti-condensation air-conditioning refrigeration system

Publications (1)

Publication Number Publication Date
CN113803818A true CN113803818A (en) 2021-12-17

Family

ID=78937689

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111227191.1A Pending CN113803818A (en) 2021-10-21 2021-10-21 High-temperature-resistant anti-condensation air-conditioning refrigeration system

Country Status (1)

Country Link
CN (1) CN113803818A (en)

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