WO2018147675A1 - Système de réfrigération - Google Patents

Système de réfrigération Download PDF

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Publication number
WO2018147675A1
WO2018147675A1 PCT/KR2018/001748 KR2018001748W WO2018147675A1 WO 2018147675 A1 WO2018147675 A1 WO 2018147675A1 KR 2018001748 W KR2018001748 W KR 2018001748W WO 2018147675 A1 WO2018147675 A1 WO 2018147675A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
compressor
pressure
temperature
condenser
Prior art date
Application number
PCT/KR2018/001748
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English (en)
Korean (ko)
Inventor
장판홍
장군
Original Assignee
장판홍
장군
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 장판홍, 장군 filed Critical 장판홍
Priority to CN201880009017.XA priority Critical patent/CN110234944B/zh
Publication of WO2018147675A1 publication Critical patent/WO2018147675A1/fr

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    • 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
    • F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
    • 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
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/027—Compressor control by controlling pressure
    • F25B2600/0272—Compressor control by controlling pressure the suction pressure
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2501—Bypass 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2515—Flow 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F25B2700/195—Pressures of the condenser
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2116—Temperatures of a condenser
    • F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser

Definitions

  • the present invention relates to a refrigeration system, and more particularly, it is installed in a tower car refrigerator, an industrial refrigerator, an air conditioner, and various cooling systems, and adjusts a cooling state of a condensation gas according to a seasonal change or an abnormal high temperature change of an outside temperature. It relates to a refrigeration system that can be maintained properly.
  • a refrigeration system includes a compressor that circulates a refrigerant, a condenser that condenses compressed high temperature refrigerant, an expansion valve that expands the condensed high temperature and high pressure refrigerant to low temperature and low pressure, and vaporizes the low temperature and low pressure expanded refrigerant to cool the surrounding air. It consists of an evaporator, etc., and is applied to a vehicle refrigerator, an air conditioner, and various coolers.
  • a receiver is installed between the condenser and the expansion valve to supply only the liquid refrigerant to the expansion valve, and the pure liquid refrigerant is supplied to the expansion valve to rapidly supply pressure to the evaporator.
  • a liquid separator is provided for separating the refrigerant liquid contained in the refrigerant gas sucked into the compressor.
  • the cooling system includes a compressor for compressing the refrigerant, a condenser for condensing the refrigerant compressed by the compressor, an expansion valve for expanding the refrigerant condensed by the condenser, and an evaporator for evaporating the refrigerant expanded by the expansion valve; And a refrigerant inlet pipe connected between the compressor and the evaporator to prevent the compressor from being overloaded due to the refrigerant supplied from the evaporator to the compressor having a pressure below a predetermined pressure, and supplying a refrigerant having a lower amount than the compressor's compression capacity.
  • a suction pressure regulating valve in which a refrigerant supply amount is set An unloading bypass tube configured in parallel with the suction pressure control valve in the refrigerant inlet pipe and having a refrigerant supply amount corresponding to a difference between the refrigerant supply amount corresponding to the compression capacity of the compressor and the refrigerant supply amount of the suction pressure control valve; And an opening / closing valve for opening and closing the bypass pipe, wherein the bypass pipe is closed through the opening / closing valve when the compressor is initially started or restarted, and the refrigerant having a lower amount than the compression capacity of the compressor is provided only through the suction pressure control valve.
  • the bypass pipe is opened through the on / off valve to correspond to the compression capacity of the compressor through the suction pressure regulating valve and the bypass pipe.
  • an unloading unit configured to allow a coolant to be supplied to the pump, and the suction pressure control valve is configured to supply a coolant reduced to 40% to 80% with respect to the coolant supply amount corresponding to the compression capacity of the compressor.
  • the bypass pipe, the refrigerant is reduced to 60% to 20% of the refrigerant supply amount corresponding to the compression capacity of the compressor to the compressor
  • Such that class is characterized in that a diameter.
  • the conventional technology configured as described above has installed a suction pressure regulating valve to solve this problem because the compressor consumes a lot of electricity at initial start or restart and causes a large amount of initial compression. There is a problem that takes a lot, there is a problem that the condenser overheating due to the poor cooling of the condensation gas due to the seasonal change or the abnormal high temperature change of the outside temperature.
  • the suction pressure control valve of the prior art is fixed at a constant pressure irrespective of the season, the on-off valve is opened and closed at the start or restart of the refrigerator and then closed after a certain time. Therefore, the suction pressure regulating valve is always open regardless of the season, the on-off valve is also composed of a system that is closed after a certain time after the operation regardless of the season.
  • the condensation state is changed according to the ambient temperature, a lot of cases of refrigerant condensation failure occurs, if the condensation state is poor there is a problem that the non-condensing gas is not completely condensed on the outlet side of the condenser is supplied to the expansion valve side.
  • An object of the present invention is to solve the problems described above, the solenoid valve installed in the bypass pipe of the low pressure by detecting the pressure and temperature between the compressor and expansion valve by the condensation gas pressure switch or condensation gas temperature sensor By controlling the opening and closing of the, to provide a refrigeration system that can greatly improve the freezing efficiency according to the freezing capacity.
  • a refrigeration system includes a compressor for compressing a refrigerant, a condenser for condensing the refrigerant compressed by the compressor, a receiver for temporarily storing the refrigerant liquid liquefied in the condenser, and the condensed high temperature.
  • a refrigeration system comprising an expansion valve for expanding a high pressure refrigerant liquid into a low temperature low pressure refrigerant gas and an evaporator for evaporating the refrigerant expanded by the expansion valve, the refrigeration system being installed in a first refrigerant pipe connected between the evaporator and the compressor.
  • a suction pressure regulating valve for maintaining a suction pressure at a constant pressure to prevent an overload of the compressor;
  • a condensation gas detector installed between the compressor and the expansion valve to detect a change in the cooling state of the condensation gas; And a solenoid valve installed in a bypass pipe connected to one side of the first refrigerant pipe in parallel, and controlling an intake amount of the refrigerant supplied from the evaporator to the compressor according to a detection signal of the condensation gas detector.
  • a condensation gas temperature sensor is installed between the condenser and the inlet of the expansion valve to sense the temperature of the condensation gas to control the opening and closing of the solenoid valve; It is installed between the compressor and the inlet of the expansion valve characterized in that it comprises a condensation gas pressure switch for controlling the opening and closing of the solenoid valve by measuring the pressure of the condensation gas.
  • the high-pressure cut-off switch is operated when the pressure of the refrigerant flowing into the condenser from the compressor is higher than a predetermined pressure is installed to stop the operation of the compressor is installed. It is done.
  • a second bypass pipe for bypassing the refrigerant liquid discharged from the receiver is connected to one side of the third refrigerant pipe in which the expansion valve is installed, and to the one side of the second bypass pipe 101.
  • a second solenoid valve is automatically installed according to a temperature to open and close the second bypass pipe, and a bypass expansion valve is installed to control an amount of refrigerant liquid introduced into the second bypass pipe. do.
  • one side of the condenser has an ambient temperature switch for controlling the opening and closing of the solenoid valve by sensing the ambient temperature of the condenser; Cooling water temperature switch for controlling the opening and closing of the solenoid valve by detecting the temperature of the cooling water discharged to the outlet side of the condenser characterized in that it is installed.
  • the refrigeration system according to the present invention by adjusting the suction pressure of the compressor in accordance with the change in the condensing pressure of the condenser to supply a pure liquid refrigerant to the expansion valve has the effect of greatly improving the refrigerating capacity and refrigeration efficiency. .
  • FIG. 1 is a block diagram showing a refrigeration system according to the present invention.
  • FIG. 2 is a view showing the flow of the refrigerant by the condensation gas pressure switch of the refrigeration system according to the present invention.
  • FIG 3 is a view showing the flow of the refrigerant by the condensation gas temperature sensor of the refrigeration system according to the present invention.
  • FIG. 4 is a block diagram showing another embodiment of the refrigeration system according to the present invention.
  • FIG. 5 is a block diagram showing another embodiment of the refrigeration system according to the present invention.
  • FIG. 6 is a block diagram showing another embodiment of the refrigeration system according to the present invention.
  • FIG. 7 is a block diagram showing another embodiment of the refrigeration system according to the present invention.
  • receiver 31 condensation gas detector
  • FIG. 1 is a block diagram showing a refrigeration system according to the present invention.
  • the refrigeration system includes a compressor 10 compressing a refrigerant, a condenser 20 condensing the refrigerant compressed by the compressor 10, and liquefied in the condenser 20.
  • a receiver 30 for temporarily storing a refrigerant liquid, an expansion valve 40 for expanding the condensed high temperature and high pressure refrigerant liquid into a low temperature low pressure refrigerant gas, and an evaporator for evaporating the refrigerant expanded by the expansion valve 40.
  • a compressor 10 compressing a refrigerant
  • a condenser 20 condensing the refrigerant compressed by the compressor 10
  • liquefied in the condenser 20 liquefied in the condenser 20.
  • a receiver 30 for temporarily storing a refrigerant liquid
  • an expansion valve 40 for expanding the condensed high temperature and high pressure refrigerant liquid into a low temperature low pressure refrigerant gas
  • an evaporator for evaporating the refrigerant expanded
  • the compressor 10 compresses the low pressure gas circulated through the evaporator 50 in the compressor to be a high temperature and high pressure gas gas, and compresses the refrigerant sucked from the evaporator 50 to supply the condenser 20. do.
  • the condenser 20 discharges the high temperature and high pressure refrigerant discharged from the compressor 10 into air at room temperature to liquefy condensation to supply the expansion valve 40 through the receiver 30.
  • the expansion valve 40 expands the refrigerant condensed by the condenser 20 into a liquid refrigerant of low temperature and low pressure so as to be easily evaporated from the evaporator 50, and supplies the refrigerant to the evaporator 50.
  • the evaporator 50 evaporates the low-temperature low-pressure refrigerant expanded by the expansion valve 40 to absorb latent heat of evaporation from the surroundings to cool the fluid such as air and water.
  • the present invention is installed in industrial refrigerators and various air-conditioning system, the suction pressure regulating valve 61 to maintain the refrigerant temperature properly by adjusting the cooling state of the condensation gas according to the seasonal change or the abnormal high temperature change of the outside temperature, It further comprises a condensation gas detector 31 and the solenoid valve (71).
  • the suction pressure regulating valve (SPR) 61 is operated by the pressure at the valve outlet, and when the initial start-up, the evaporation load is increased larger than the normal value.
  • SPR suction pressure regulating valve
  • suction pressure control valve 61 is installed in the first refrigerant pipe 60 connected between the evaporator 50 and the compressor 10, the suction pressure is a constant pressure to prevent overload of the compressor (10) It serves to maintain.
  • the condensation gas detector 31 is installed between the compressor 10 and the expansion valve 40 to detect a change in the cooling state of the condensation gas.
  • the condensation gas detector 31 is installed between the condenser 20 and the inlet of the expansion valve 40 to detect the temperature of the condensation gas to control the opening and closing of the solenoid valve 71 311. And a condensation gas pressure switch 312 installed between the compressor 10 and the inlet of the expansion valve 40 to control the opening and closing of the solenoid valve 71 by measuring the pressure of the condensation gas.
  • the condensation gas temperature sensor 311 is installed in the refrigerant pipe connected between the condenser 20 and the inlet of the expansion valve 40 to detect the temperature value of the condensation gas and outputs it to the solenoid valve 71.
  • the condensation gas temperature sensor 311 is composed of any one of a temperature switch or a temperature sensor, the control unit to control the opening and closing of the solenoid valve 71 by receiving a signal output from the temperature sensor when configured as a temperature sensor (Not shown) may be installed.
  • the condensation gas pressure switch 312 is installed in the refrigerant pipe connected between the compressor 10 and the inlet of the expansion valve 40 detects the pressure value of the condensation gas and outputs it to the solenoid valve 71.
  • the condensation gas temperature sensor 311 and the condensation gas pressure switch 312 is connected to the receiver 30, the temperature and pressure of the condensation gas can be detected most efficiently.
  • FIG. 2 is a view showing the flow of the refrigerant by the condensation gas pressure switch of the refrigeration system according to the present invention
  • Figure 3 is a view showing the flow of the refrigerant by the condensation gas temperature sensor of the refrigeration system according to the present invention.
  • the condensing gas pressure switch 312 senses this and the solenoid valve 71 installed in the bypass pipe 70. ).
  • the condensing gas temperature sensor 311 detects this and the solenoid valve 71 installed in the bypass pipe 70. To close.
  • the suction pressure of the compressor 10 is maximized to greatly improve the freezing effect according to the freezing capacity, and in the summer when the outdoor air temperature is relatively high, the suction pressure of the compressor 10 is constantly supplied. It is possible to flexibly correspond to the cooling temperature of the condenser 20 according to the change in the outside air temperature.
  • the present invention may cause condenser overheating due to a poor cooling of the condensation gas due to seasonal change or abnormal high temperature change of the outside temperature, and the condensation state is often changed according to the outside temperature, and in particular, the condensation state is poor.
  • the non-condensable gas is not completely condensed to the outlet side can solve the problem of inflow to the expansion valve side.
  • the solenoid valve 71 is installed in the bypass pipe 70 connected in parallel to one side of the first refrigerant pipe 60, the evaporator 50 in accordance with the detection signal of the condensation gas detector 31. ), The suction amount of the refrigerant supplied to the compressor 10 is interrupted.
  • the solenoid valve 71 closes the bypass pipe 70 by the control signal input from the condensation gas detecting unit 31 to the compressor 10. Only a suction pressure control valve 61 is supplied to the refrigerant of a lower amount than the compression capacity of the compressor 10, and when the pressure and temperature of the condensation gas is low, the control signal input from the condensation gas detection unit 31 By opening the bypass pipe 70 by the suction pressure control valve 61 and the bypass pipe 70 so that the amount of refrigerant corresponding to the compression capacity of the compressor 10 is supplied.
  • Figure 4 is a block diagram showing another embodiment of a refrigeration system according to the present invention.
  • the pressure of the refrigerant flowing into the condenser 20 from the compressor 10 is constant.
  • the high pressure cut-off switch 81 may be installed to stop the operation of the compressor 10.
  • the high-pressure cutoff switch 81 stops the operation when an abnormal pressure occurs in the second refrigerant pipe 80 during the operation and the high pressure rises or the discharge pressure of the compressor 10 rises rapidly.
  • the refrigerant condensed and liquefied in the condenser 20 is too cooled, resulting in a decrease in the amount of refrigerant circulation in the device along with the fear of generating a gas that hinders the cooling effect of the evaporator 50.
  • FIG. 5 is a block diagram showing another embodiment of a refrigeration system according to the present invention.
  • valve 91 maintains a constant pressure between the compressor 10, the condenser 20, and the receiver 30. Equipped with a pressure equalizing pipe 90 may be further installed.
  • the pressure should be constant in the condensation process of the state of the refrigerant is changed from gas to liquid, the non-liquefied non-condensable gas is present in the receiver 30 may not be constant pressure.
  • the operation of the condensation gas detector 31 may be smoothed and the detection function may be improved.
  • Figure 6 is a block diagram showing another embodiment of a refrigeration system according to the present invention.
  • a second bypass pipe 101 for bypassing the refrigerant liquid discharged from the receiver 30. May be connected.
  • one side of the second bypass pipe 101 is provided with a second solenoid valve 102 which is automatically operated according to the room temperature to open and close the second bypass pipe 101, and the second bypass Bypass expansion valve 103 for adjusting the amount of the refrigerant liquid introduced into the pipe 101 may be installed.
  • Such a system is preferably applied to an air conditioner for a vehicle, and is operated as follows when the flow of the condensation refrigerant is smooth due to a sufficient condensation effect while the vehicle is being driven or the condenser ambient temperature of spring and autumn is 30 degrees or less. do.
  • the second bypass pipe 101 is opened to discharge a large amount of the low temperature refrigerant liquid discharged from the receiver 30 to the evaporator ( 50) can maximize the cooling effect.
  • FIG. 7 is a block diagram showing another embodiment of a refrigeration system according to the present invention.
  • one side of the condenser 20 includes an ambient temperature switch 21 for sensing the ambient temperature of the condenser 20 to control the opening and closing of the solenoid valve 71;
  • Cooling water temperature switch 22 for controlling the opening and closing of the solenoid valve 71 by sensing the temperature of the cooling water discharged to the outlet side of the condenser 20 may be installed.
  • the ambient temperature switch 21 is installed around the air-cooled condenser to sense the temperature around the condenser in the process of condensing the refrigerant, the cooling water temperature switch 22 is installed at the outlet or pipe of the water-cooled condenser to the temperature of the cooling water Will be detected.
  • the ambient temperature switch 21 detects this and opens the solenoid valve 71.
  • the ambient temperature switch 21 detects this to close the solenoid valve 71.
  • the coolant temperature switch 22 detects this to open the solenoid valve 71.
  • the coolant temperature switch 22 detects this to close the solenoid valve 71.
  • the low pressure pressure of the compressor 10 is adjusted to condense the refrigerant gas of the condenser 20. It can maintain the proper and greatly improve the freezing capacity and freezing efficiency according to the condensation effect.

Abstract

La présente invention concerne un système de réfrigération et, plus particulièrement, un système de réfrigération qui est installé dans un réfrigérateur de camion-caisse, un réfrigérateur industriel, un climatiseur, divers systèmes de réfrigération, etc. et qui est capable de maintenir de manière appropriée une température de fluide frigorigène par commande d'un état de refroidissement d'un gaz condensé en fonction d'une variation saisonnière ou d'un changement anormal de température élevée d'une température ambiante. Le système de réfrigération selon la présente invention comprend: une soupape de régulation de pression d'aspiration qui est installée dans un premier tuyau de fluide frigorigène raccordé entre un évaporateur et un compresseur et maintient une pression d'aspiration à une pression prédéterminée pour empêcher une surcharge du compresseur; une unité de détection de gaz condensé, installée entre le compresseur et un détendeur, pour détecter un changement dans l'état de refroidissement du gaz condensé; et une électrovanne installée dans un tube de dérivation connecté en parallèle à un côté d'un premier tuyau de fluide frigorigène et pour commander une quantité d'aspiration d'un fluide frigorigène fourni par l'évaporateur au compresseur en fonction d'un signal de détection de l'unité de détection de gaz condensé.
PCT/KR2018/001748 2017-02-09 2018-02-09 Système de réfrigération WO2018147675A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880009017.XA CN110234944B (zh) 2017-02-09 2018-02-09 制冷系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0018321 2017-02-09
KR20170018321 2017-02-09

Publications (1)

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WO2018147675A1 true WO2018147675A1 (fr) 2018-08-16

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CN (1) CN110234944B (fr)
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CN114291121A (zh) * 2022-02-21 2022-04-08 张腊琴 冷链集装器

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KR102406775B1 (ko) * 2021-10-01 2022-06-10 김봉석 냉동싸이클 시스템
KR102628450B1 (ko) * 2021-10-08 2024-01-24 김봉석 냉동탑차용의 냉동싸이클 시스템
KR102410819B1 (ko) * 2021-12-23 2022-06-22 마스턴투자운용(주) 넓은 온도영역에서 고효율운전이 가능한 냉장 냉동 겸용의 물류센터용 냉동시스템
CN116845397A (zh) * 2022-03-23 2023-10-03 宁德时代新能源科技股份有限公司 温度管理设备和测试系统

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