EP3293467A1 - Procédé et dispositif de déshumidification et de réfrigération de charge légère - Google Patents

Procédé et dispositif de déshumidification et de réfrigération de charge légère Download PDF

Info

Publication number
EP3293467A1
EP3293467A1 EP15893991.8A EP15893991A EP3293467A1 EP 3293467 A1 EP3293467 A1 EP 3293467A1 EP 15893991 A EP15893991 A EP 15893991A EP 3293467 A1 EP3293467 A1 EP 3293467A1
Authority
EP
European Patent Office
Prior art keywords
evaporator
refrigerant
liquid
gas
temperature
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP15893991.8A
Other languages
German (de)
English (en)
Other versions
EP3293467A4 (fr
Inventor
Yi Han
Yaopeng ZHAO
Yugang CHU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of EP3293467A1 publication Critical patent/EP3293467A1/fr
Publication of EP3293467A4 publication Critical patent/EP3293467A4/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/028—Evaporators having distributing means
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • 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
    • F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only

Definitions

  • the present invention relates to the field of electronic communications technologies, and in particular, to an under-loading dehumidification and refrigeration method and apparatus.
  • a precision air conditioner refers to an equipment room specific precision air conditioner that can fully meet an equipment room environment condition requirement, and is a new type gradually developed in recent 30 years.
  • a computer equipment room is placed with computer devices, program-controlled exchange products and the like, and includes a large quantity of dense electronic elements. To improve use stability and reliability of these devices, an ambient temperature and ambient humidity need to be strictly controlled within a particular range.
  • An equipment room precision air conditioner is a specific air conditioner designed for a modern electronic equipment room, and its working precision and reliability are much higher than those of an ordinary air conditioner.
  • a precision air conditioner humidity is mainly adjusted in two parts: the first is that when air passes through a surface of an evaporator, because a temperature is lower than the dew point of water vapor, the water vapor in the air is liquefied, thereby reducing humidity in the air; and the second is that after humidity in a refrigeration process is lower than a set value, a humidifier is started to perform humidification, thereby ensuring that the humidity is within a set range. Therefore, an ambient temperature is certainly reduced in a dehumidification process, and the precision air conditioner has a large refrigerating capacity; as a result, currently, a precision air conditioner system cannot implement simple and low-cost constant temperature dehumidification.
  • Embodiments of the present invention provide an under-loading dehumidification and refrigeration method and apparatus, which can further implement simple and low-cost constant temperature dehumidification on a basis of having an existing refrigeration and dehumidification function.
  • an under-loading dehumidification and refrigeration apparatus including: a compressor (1), a condenser (2), an evaporator (3), and an electronic expansion valve (8), where an input end of the compressor (1) is connected to an output end of the evaporator (3), an output end of the compressor (1) is connected to an input end of the condenser (2), an output end of the condenser (2) is connected to an input end of the evaporator (3), the electronic expansion valve A (8) is connected in series between the condenser (2) and the evaporator (3), and all the ends are connected by using refrigerant pipes (4), where the compressor (1) is configured to compress a gas refrigerant that enters the compressor (1), to raise pressure and a temperature of the gas refrigerant, and output, to the condenser (2), the gas refrigerant whose temperature and pressure are raised; the condenser (2) is configured to cool the gas refrigerant whose temperature and pressure are raised, to condense the gas ref
  • the aspect in which the evaporator (3) is divided into the first evaporator section (5) and the second evaporator section (7), and the throttling apparatus (6) is connected in series between the first evaporator section (5) and the second evaporator section (7) is specifically used to disconnect a refrigerant pipe in the interior (11) of the evaporator (3) from a preset position between an air inlet (9) of the evaporator and an air outlet (10) of the evaporator, to form two parts of refrigerant pipes, where the refrigerant pipe in the interior (11) of the evaporator is connected between the air inlet (9) of the evaporator and the air outlet (10) of the evaporator, a refrigerant pipe (21) that is in the interior (11) of the evaporator (3) and that is connected to the air inlet (9) of the evaporator is the first evaporator section (5), a refrigerant pipe (31) that is in the
  • the aspect in which the refrigerant pipe in the interior (11) of the evaporator (3) is disconnected from the preset position between the air inlet (9) of the evaporator and the air outlet (10) of the evaporator, to form the two parts of refrigerant pipes is specifically used to disconnect the pipe in the interior of the evaporator from any position between a position whose distance from the air inlet (9) of the evaporator is greater than or equal to 1/3 of a distance between the pipe and the air inlet (9) of the evaporator and a position whose distance from the air inlet (9) of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet (9) of the evaporator, to form two parts of pipes.
  • the aspect specifically used to disconnect the pipe in the interior of the evaporator from any position between the position whose distance from the air inlet (9) of the evaporator is greater than or equal to 1/3 of the distance between the pipe and the air inlet (9) of the evaporator and the position whose distance from the air inlet (9) of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet (9) of the evaporator, to form the two parts of pipes is specifically used to disconnect the refrigerant pipe in the interior of the evaporator (3) from a position whose distance from the air inlet (9) of the evaporator is 1/2 of the distance between the refrigerant pipe and the air inlet (9) of the evaporator, to form two parts of pipes.
  • the apparatus further includes: a dispenser (81), where one end of the dispenser (81) is connected to the throttling apparatus (6), and the other end is connected to the second evaporator section, and the dispenser (81) is configured to: when two or more than two groups of air inlets and air outlets exist in the refrigerant pipe in the interior of the evaporator (3), transmit a refrigerant to a second evaporator section between an air inlet and an air outlet of each group.
  • the throttling apparatus (6) is connected in series between the first evaporator section (5) and the second evaporator section (7), and configured to reduce the temperature and the pressure of the liquid refrigerant output by the first evaporator section, and then output the liquid refrigerant to the second evaporator section, which specifically includes:
  • the throttling apparatus further includes a solenoid valve; and the solenoid valve is connected in parallel to the electronic expansion valve, and during constant temperature dehumidification, the solenoid valve is closed, and the electronic expansion valve is configured to perform throttling.
  • the throttling apparatus includes a solenoid valve, connected in parallel to a capillary tube; and during constant temperature dehumidification, the solenoid valve between evaporators is closed, and the capillary tube connected in parallel performs throttling.
  • an under-loading dehumidification and refrigeration method including:
  • the dividing refrigerant pipes in the interior of the evaporator into two parts, to divide the evaporator into a first evaporator section and a second evaporator section specifically includes: disconnecting the refrigerant pipe in the interior of the evaporator from a preset position between an air inlet of the evaporator and an air outlet of the evaporator, to form two parts of refrigerant pipes, where the refrigerant pipe in the interior of the evaporator is connected between the air inlet of the evaporator and the air outlet of the evaporator, a refrigerant pipe that is connected to the air inlet of the evaporator is the first evaporator section, a refrigerant pipe that is connected to the air outlet of the evaporator is the second evaporator section, one end of the throttling apparatus is connected to the first evaporator section, and the other end is connected to the second evaporator section.
  • the disconnecting the refrigerant pipe in the interior of the evaporator from a preset position between an air inlet of the evaporator and an air outlet of the evaporator, to form two parts of refrigerant pipes specifically includes:
  • the disconnecting the refrigerant pipe in the interior of the evaporator from any position between a position whose distance from the air inlet of the evaporator is greater than or equal to 1/3 of a distance between the pipe and the air inlet of the evaporator and a position whose distance from the air inlet of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet of the evaporator, to form two parts of refrigerant pipes specifically includes:
  • the method further includes: when two or more than two groups of air inlets and air outlets exist in the refrigerant pipe in the interior of the evaporator, transmitting, by a dispenser, a refrigerant to a second evaporator section between an air inlet and an air outlet of each group, where one end of the dispenser is connected to the throttling apparatus, and the other end is connected to the second evaporator section.
  • the disconnecting the refrigerant pipe in the interior of the evaporator from a preset position between an air inlet of the evaporator and an air outlet of the evaporator, to form two parts of refrigerant pipes specifically includes:
  • the disconnecting the refrigerant pipe in the interior of the evaporator from any position between a position whose distance from the air inlet of the evaporator is greater than or equal to 1/3 of a distance between the pipe and the air inlet of the evaporator and a position whose distance from the air inlet of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet of the evaporator, to form two parts of refrigerant pipes specifically includes:
  • the method further includes: when two or more than two groups of air inlets and air outlets exist in the refrigerant pipe in the interior of the evaporator, transmitting, by a dispenser, a refrigerant to a second evaporator section between an air inlet and an air outlet of each group, where one end of the dispenser is connected to the throttling apparatus, and the other end is connected to the second evaporator section.
  • a data center including a communications device, and further including: the under-loading dehumidification apparatus according to claims 1 to 8, configured to perform refrigeration and dehumidification or constant temperature dehumidification on the communications device.
  • FIG. 1 is an internal implementation principle diagram of an under-loading dehumidification and refrigeration apparatus according to an embodiment of the present invention.
  • a precision air conditioner is widely applicable to a high precision environment such as a computer equipment room, a program-controlled exchange equipment room, a mobile satellite communications station, or a data container.
  • a high precision environment such as a computer equipment room, a program-controlled exchange equipment room, a mobile satellite communications station, or a data container.
  • Such an environment has very high requirements on indicators such as a temperature, humidity, and airflow distribution of air, which need to be ensured by an equipment room specific precision air conditioner device that is running securely and reliably 24 hours a day, 365 days a year.
  • a constant temperature dehumidification apparatus of the present invention is formed by connecting a compressor, a condenser located in a downstream of an outdoor compressor, an evaporator located in an upstream of an indoor compressor, an electronic expansion valve, and a throttling mechanism between evaporators.
  • the present invention is widely applicable to a high precision environment such as a computer equipment room, a program-controlled exchange equipment room, a mobile satellite communications station, or a data container, and is certainly also applicable to the field of household air conditioners.
  • An under-loading dehumidification and refrigeration apparatus includes: a compressor (1), a condenser (2), an evaporator (3), and an electronic expansion valve (8), where an input end of the compressor (1) is connected to an output end of the evaporator (3), an output end of the compressor (1) is connected to an input end of the condenser (2), an output end of the condenser (2) is connected to an input end of the evaporator (3), the electronic expansion valve A (8) is connected in series between the condenser (2) and the evaporator (3), and all the ends are connected by using refrigerant pipes (4), where the compressor (1) is configured to compress a gas refrigerant that enters the compressor (1), to raise pressure and a temperature of the gas refrigerant, and output, to the condenser (2), the gas refrigerant whose temperature and pressure are raised; the condenser (2) is configured to cool the gas refrigerant whose temperature and pressure are raised, to condense the gas refrigerant into a
  • Beneficial effects are as follows: When constant temperature dehumidification needs to be performed, after a refrigerant flows from a condenser into an evaporator 1, a temperature of the refrigerant is higher than an ambient temperature, so that heat release is performed to reduce the temperature; in this case, the refrigerant is still a high-pressure liquid; then after flowing through a throttling mechanism between evaporators, the liquid refrigerant becomes a low-pressure low-temperature refrigerant liquid, and flows into an evaporator 2, and a temperature of the liquid refrigerant is lower than the ambient temperature, so that heat absorption is performed to raise the temperature, and the liquid refrigerant becomes a gas and then flows back to a compressor for a recirculation. Therefore, when the refrigerant passes through the evaporator 1 and the evaporator 2, the temperature is first reduced and then raised.
  • the air For indoor air, the air first passes through the evaporator 2, and a temperature of the air is reduced, and then the air passes through the evaporator 1, and the temperature is raised.
  • the overall temperature of the indoor air passing through an air conditioner basically remains unchanged.
  • the evaporator 2 may continue to perform dehumidification, to reduce indoor humidity continuously, thereby implementing a constant temperature dehumidification function.
  • the electronic expansion valve A When refrigeration needs to be performed, the electronic expansion valve A is not completely opened, to perform throttling.
  • FIG. 2 is an internal implementation principle diagram of an existing evaporator according to an embodiment of the present invention.
  • pipes in the interior of the evaporator 11 include an upper part and a lower part.
  • the existing evaporator includes N parts, where N is a value in a positive integer range as required.
  • the evaporator divides the pipes into a pipe 21 and a pipe 31 from a position of the pipes in the interior of the evaporator.
  • the evaporator is divided into a first evaporator section provided with the pipe 21 and a second evaporator section provided with the pipe 31.
  • FIG. 3 is an internal implementation principle diagram of an improved evaporator according to an embodiment of the present invention.
  • refrigerant pipes in the interior of the evaporator 11 include an upper part and a lower part.
  • an evaporator includes N parts, where N is a value in a positive integer range as required.
  • the evaporator divides the pipes into a pipe 21 and a pipe 31 from a position of the refrigerant pipes in the interior of the evaporator.
  • the evaporator is divided into a first evaporator section provided with the pipe 21 and a second evaporator section provided with the pipe 31.
  • a throttling apparatus that includes a capillary tube 61 and an electronic expansion valve 71
  • the capillary tube 61 and the electronic expansion valve 71 in the throttling apparatus may be replaced with various throttling apparatuses in the prior art.
  • FIG. 4 shows an under-loading dehumidification and refrigeration apparatus according to an embodiment of the present invention, where the apparatus includes:
  • the apparatus further includes the electronic expansion valve A.
  • the electronic expansion valve A When constant temperature dehumidification needs to be performed, the electronic expansion valve A is completely open to perform no throttling, and the throttling apparatus between evaporators performs throttling; and during refrigeration, the electronic expansion valve A is not completely opened, to perform throttling.
  • the evaporator is specifically configured to: disconnect the pipe in the interior of the evaporator from a preset position between an air inlet of the evaporator and an air outlet of the evaporator, to form two parts of pipes, where the pipe in the interior of the evaporator is connected between the air inlet of the evaporator and the air outlet of the evaporator, a pipe that is connected to the air inlet of the evaporator is the first evaporator section, a pipe that is connected to the air outlet of the evaporator is the second evaporator section, and one end of the throttling apparatus is connected to the first evaporator section, and the other end is connected to the second evaporator section.
  • the preset position is located in the pipe between the air inlet of the evaporator and the air outlet of the evaporator, and a setting of the preset position needs to conform to a function that the first evaporator section and the second evaporator section can respectively achieve in this embodiment.
  • the evaporator is specifically configured to disconnect the pipe in the interior of the evaporator from any position between a position whose distance from the air inlet of the evaporator is greater than or equal to 1/3 of a distance between the pipe and the air inlet of the evaporator and a position whose distance from the air inlet of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet of the evaporator, to form two parts of pipes.
  • the evaporator is specifically configured to disconnect the pipe in the interior of the evaporator from any position between the position whose distance from the air inlet of the evaporator is greater than or equal to 1/3 of the distance between the pipe and the air inlet of the evaporator and the position whose distance from the air inlet of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet of the evaporator, to form the two parts of pipes
  • the evaporator is specifically configured to disconnect the pipe in the interior of the evaporator from a position whose distance from the air inlet of the evaporator is 1/2 of the distance between the pipe and the air inlet of the evaporator, to form two parts of pipes.
  • the under-loading dehumidification and refrigeration apparatus further includes: a dispenser, where one end of the dispenser is connected to the throttling apparatus, and the other end is connected to the second evaporator section, and the dispenser is configured to: when two or more than two groups of air inlets and air outlets exist in the pipe in the interior of the evaporator, transmit a refrigerant to a second evaporator section between an air inlet and an air outlet of each group.
  • the throttling apparatus is connected in series between the first evaporator section and the second evaporator section, and configured to reduce the temperature and the pressure of the liquid refrigerant output by the first evaporator section, and then output the liquid refrigerant to the second evaporator section, which specifically includes:
  • an electronic expansion valve A When normal refrigeration without dehumidification is performed, an electronic expansion valve A performs throttling, and a throttling apparatus between evaporators is completely opened and achieves no throttling function; a refrigerant exhausted from a compressor is a high-temperature high-pressure gas, releases heat to outdoor air when passing through a condenser, and becomes a high-temperature high-pressure refrigerant liquid, and after passing through the electronic expansion valve A, the refrigerant becomes a low-pressure low-temperature refrigerant liquid, and a temperature of the refrigerant is lower than an indoor temperature, so that heat absorption is performed, thereby reducing a temperature of indoor air passing through the evaporator, and implementing a refrigeration function; and after absorbing heat, the refrigerant becomes a low-pressure gas whose temperature is raised, and flows back to the compressor for a next recirculation.
  • the electronic expansion valve A When constant temperature dehumidification needs to be performed, the electronic expansion valve A is completely opened to perform no throttling, and the throttling apparatus between evaporators performs throttling.
  • a refrigerant flows from the condenser into an evaporator 1, a temperature of the refrigerant is higher than an ambient temperature, so that heat release is performed to reduce the temperature; then after flowing through a throttling mechanism between evaporators, the liquid refrigerant becomes a low-pressure low-temperature refrigerant liquid, and flows into an evaporator 2, and a temperature of the liquid refrigerant is lower than the ambient temperature, so that heat absorption is performed to raise the temperature, and the liquid refrigerant becomes a gas and then flows back to the compressor for a recirculation. Therefore, when the refrigerant passes through the evaporator 1 and the evaporator 2, the temperature is first reduced and then raised.
  • FIG. 6 shows an under-loading dehumidification and refrigeration apparatus according to an embodiment of the present invention.
  • the apparatus includes:
  • the evaporator is specifically configured to: disconnect the pipe in the interior of the evaporator from a preset position between an air inlet of the evaporator and an air outlet of the evaporator, to form two parts of pipes, where the pipe in the interior of the evaporator is connected between the air inlet of the evaporator and the air outlet of the evaporator, a pipe that is connected to the air inlet of the evaporator is the first evaporator section, a pipe that is connected to the air outlet of the evaporator is the second evaporator section, and one end of the throttling apparatus is connected to the first evaporator section, and the other end is connected to the second evaporator section.
  • the preset position is located in the pipe between the air inlet of the evaporator and the air outlet of the evaporator, and a setting of the preset position needs to conform to a function that the first evaporator section and the second evaporator section can respectively achieve in this embodiment.
  • the evaporator is specifically configured to disconnect the pipe in the interior of the evaporator from any position between a position whose distance from the air inlet of the evaporator is greater than or equal to 1/3 of a distance between the pipe and the air inlet of the evaporator and a position whose distance from the air inlet of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet of the evaporator, to form two parts of pipes.
  • the evaporator is specifically configured to disconnect the pipe in the interior of the evaporator from any position between the position whose distance from the air inlet of the evaporator is greater than or equal to 1/3 of the distance between the pipe and the air inlet of the evaporator and the position whose distance from the air inlet of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet of the evaporator, to form the two parts of pipes
  • the evaporator is specifically configured to disconnect the pipe in the interior of the evaporator from a position whose distance from the air inlet of the evaporator is 1/2 of the distance between the pipe and the air inlet of the evaporator, to form two parts of pipes.
  • the under-loading dehumidification and refrigeration apparatus further includes: a dispenser, where one end of the dispenser is connected to the throttling apparatus, and the other end is connected to the second evaporator section, and the dispenser is configured to: when two or more than two groups of air inlets and air outlets exist in the pipe in the interior of the evaporator, transmit a refrigerant to a second evaporator section between an air inlet and an air outlet of each group.
  • the throttling apparatus is connected in series between the first evaporator section and the second evaporator section, and configured to reduce the temperature and the pressure of the liquid refrigerant output by the first evaporator section, and then output the liquid refrigerant to the second evaporator section, which specifically includes:
  • Beneficial effects are as follows: When constant temperature dehumidification needs to be performed, after a refrigerant flows from a condenser into an evaporator 1, a temperature of the refrigerant is higher than an ambient temperature, so that heat release is performed to reduce the temperature; then after flowing through a throttling mechanism between evaporators, the liquid refrigerant becomes a low-pressure low-temperature refrigerant liquid, and flows into an evaporator 2, and a temperature of the liquid refrigerant is lower than the ambient temperature, so that heat absorption is performed to raise the temperature, and the liquid refrigerant becomes a gas and then flows back to a compressor for a recirculation. Therefore, when the refrigerant passes through the evaporator 1 and the evaporator 2, the temperature is first reduced and then raised.
  • the air For indoor air, the air first passes through the evaporator 2, and a temperature of the air is reduced, and then the air passes through the evaporator 1, and the temperature is raised.
  • the overall temperature of the indoor air passing through an air conditioner basically remains unchanged.
  • the evaporator 2 may continue to perform dehumidification, to reduce indoor humidity continuously, thereby implementing a constant temperature dehumidification function.
  • FIG. 7 shows an under-loading dehumidification and refrigeration method provided in an embodiment of the present invention. As shown in FIG. 8 , steps of this embodiment are as follows:
  • a compressor raises pressure and a temperature of a gas refrigerant that enters the compressor, and outputs, to a condenser, the gas refrigerant whose temperature and pressure are raised.
  • the condenser cools the gas refrigerant whose temperature and pressure are raised, to condense the gas refrigerant into a liquid refrigerant, and then output the gas refrigerant to an evaporator.
  • S703 Divide refrigerant pipes in the interior of the evaporator into two parts, to divide the evaporator into a first evaporator section and a second evaporator section.
  • S704 In a case of refrigeration and dehumidification, close an electronic expansion valve A partially to perform throttling on the liquid refrigerant input from the condenser, to reduce pressure and a temperature of the liquid refrigerant and form a gas-liquid two-phase refrigerant, and then output the gas-liquid two-phase refrigerant to the evaporator.
  • the first evaporator section and the second evaporator section perform heat exchange on the gas-liquid two-phase refrigerant output by the electronic expansion valve A and an environment, and a throttling apparatus performs no throttling, to raise a temperature of the gas-liquid two-phase refrigerant to become a gas refrigerant, so as to reduce an ambient temperature to perform dehumidification on the environment, and then output the gas refrigerant to the compressor.
  • S706 In a case of constant temperature dehumidification, fully open the electronic expansion valve A to perform no throttling, where the first evaporator section is configured to perform heat exchange on the liquid refrigerant and an environment, to reduce a temperature of the liquid refrigerant and raise an ambient temperature, and then output, to the throttling apparatus, the liquid refrigerant whose temperature is reduced.
  • S707 The throttling apparatus performs throttling on the liquid refrigerant output by the first evaporator section, to reduce pressure and the temperature of the liquid refrigerant and form a gas-liquid two-phase refrigerant, and then output the gas-liquid two-phase refrigerant to the second evaporator section.
  • the second evaporator section performs heat exchange on the gas-liquid two-phase refrigerant output by the throttling apparatus and the ambient temperature, to raise a temperature of the gas-liquid two-phase refrigerant to become a gas refrigerant, reduce the ambient temperature to perform dehumidification on the environment, and then output the gas refrigerant to the compressor.
  • an electronic expansion valve A When normal refrigeration without dehumidification is performed, an electronic expansion valve A performs throttling, and a throttling apparatus between evaporators is completely opened and achieves no throttling function; a refrigerant exhausted from a compressor is a high-temperature high-pressure gas, releases heat to outdoor air when passing through a condenser, and becomes a high-temperature high-pressure refrigerant liquid, and after passing through the electronic expansion valve A, the refrigerant becomes a low-pressure low-temperature refrigerant liquid, and a temperature of the refrigerant is lower than an indoor temperature, so that heat absorption is performed, thereby reducing a temperature of indoor air passing through the evaporator, and implementing a refrigeration function; and after absorbing heat, the refrigerant becomes a low-pressure gas whose temperature is raised, and flows back to the compressor for a next recirculation.
  • the electronic expansion valve A When constant temperature dehumidification needs to be performed, the electronic expansion valve A is completely opened to perform no throttling, and the throttling apparatus between evaporators performs throttling.
  • a refrigerant flows from the condenser into an evaporator 1, a temperature of the refrigerant is higher than an ambient temperature, so that heat release is performed to reduce the temperature; then after flowing through a throttling mechanism between evaporators, the liquid refrigerant becomes a low-pressure low-temperature refrigerant liquid, and flows into an evaporator 2, and a temperature of the liquid refrigerant is lower than the ambient temperature, so that heat absorption is performed to raise the temperature, and the liquid refrigerant becomes a gas and then flows back to the compressor for a recirculation. Therefore, when the refrigerant passes through the evaporator 1 and the evaporator 2, the temperature is first reduced and then raised.
  • the under-loading dehumidification and refrigeration method further includes: the dividing refrigerant pipes in the interior of the evaporator into two parts, to divide the evaporator into a first evaporator section and a second evaporator section specifically includes: disconnecting the pipe in the interior of the evaporator from a preset position between an air inlet of the evaporator and an air outlet of the evaporator, to form two parts of pipes, where the pipe in the interior of the evaporator is connected between the air inlet of the evaporator and the air outlet of the evaporator, a pipe that is connected to the air inlet of the evaporator is the first evaporator section, a pipe that is connected to the air outlet of the evaporator is the second evaporator section, and one end of the throttling apparatus is connected to the first evaporator section, and the other end is connected to the second evaporator section.
  • the under-loading dehumidification and refrigeration method further includes: the disconnecting the pipe in the interior of the evaporator from a preset position between an air inlet of the evaporator and an air outlet of the evaporator, to form two parts of pipes specifically includes: disconnecting the pipe in the interior of the evaporator from any position between a position whose distance from the air inlet of the evaporator is greater than or equal to 1/3 of a distance between the pipe and the air inlet of the evaporator and a position whose distance from the air inlet of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet of the evaporator, to form two parts of pipes.
  • the under-loading dehumidification and refrigeration method further includes: the evaporator being specifically configured to disconnect the pipe in the interior of the evaporator from any position between a position whose distance from the air inlet of the evaporator is greater than or equal to 1/3 of a distance between the pipe and the air inlet of the evaporator and a position whose distance from the air inlet of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet of the evaporator, to form two parts of pipes specifically includes:
  • the under-loading dehumidification and refrigeration method further includes:
  • an electronic expansion valve A When normal refrigeration without dehumidification is performed, an electronic expansion valve A performs throttling, and a throttling apparatus between evaporators is completely opened and achieves no throttling function; a refrigerant exhausted from a compressor is a high-temperature high-pressure gas, releases heat to outdoor air when passing through a condenser, and becomes a high-temperature high-pressure refrigerant liquid, and after passing through the electronic expansion valve A, the refrigerant becomes a low-pressure low-temperature refrigerant liquid, and a temperature of the refrigerant is lower than an indoor temperature, so that heat absorption is performed, thereby reducing a temperature of indoor air passing through the evaporator, and implementing a refrigeration function; and after absorbing heat, the refrigerant becomes a low-pressure gas whose temperature is raised, and flows back to the compressor for a next recirculation.
  • the electronic expansion valve A When constant temperature dehumidification needs to be performed, the electronic expansion valve A is completely opened to perform no throttling, and the throttling apparatus between evaporators performs throttling.
  • a refrigerant flows from the condenser into an evaporator 1, a temperature of the refrigerant is higher than an ambient temperature, so that heat release is performed to reduce the temperature; then after flowing through a throttling mechanism between evaporators, the liquid refrigerant becomes a low-pressure low-temperature refrigerant liquid, and flows into an evaporator 2, and a temperature of the liquid refrigerant is lower than the ambient temperature, so that heat absorption is performed to raise the temperature, and the liquid refrigerant becomes a gas and then flows back to the compressor for a recirculation. Therefore, when the refrigerant passes through the evaporator 1 and the evaporator 2, the temperature is first reduced and then raised.
  • a data center includes a communications device, and further includes: the under-loading dehumidification apparatus according to claims 1 to 8, configured to perform refrigeration and dehumidification or constant temperature dehumidification on the communications device.
  • the under-loading dehumidification and refrigeration apparatus includes:
  • the apparatus further includes the electronic expansion valve A.
  • the electronic expansion valve A When constant temperature dehumidification needs to be performed, the electronic expansion valve A is completely open to perform no throttling, and the throttling apparatus between evaporators performs throttling; and during refrigeration, the electronic expansion valve A is not completely opened, to perform throttling.
  • the evaporator is specifically configured to: disconnect the pipe in the interior of the evaporator from a preset position between an air inlet of the evaporator and an air outlet of the evaporator, to form two parts of pipes, where the pipe in the interior of the evaporator is connected between the air inlet of the evaporator and the air outlet of the evaporator, a pipe that is connected to the air inlet of the evaporator is the first evaporator section, a pipe that is connected to the air outlet of the evaporator is the second evaporator section, and one end of the throttling apparatus is connected to the first evaporator section, and the other end is connected to the second evaporator section.
  • the preset position is located in the pipe between the air inlet of the evaporator and the air outlet of the evaporator, and a setting of the preset position needs to conform to a function that the first evaporator section and the second evaporator section can respectively achieve in this embodiment.
  • the evaporator is specifically configured to disconnect the pipe in the interior of the evaporator from any position between a position whose distance from the air inlet of the evaporator is greater than or equal to 1/3 of a distance between the pipe and the air inlet of the evaporator and a position whose distance from the air inlet of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet of the evaporator, to form two parts of pipes.
  • the evaporator is specifically configured to disconnect the pipe in the interior of the evaporator from any position between the position whose distance from the air inlet of the evaporator is greater than or equal to 1/3 of the distance between the pipe and the air inlet of the evaporator and the position whose distance from the air inlet of the evaporator is less than or equal to 2/3 of the distance between the pipe and the air inlet of the evaporator, to form the two parts of pipes
  • the evaporator is specifically configured to disconnect the pipe in the interior of the evaporator from a position whose distance from the air inlet of the evaporator is 1/2 of the distance between the pipe and the air inlet of the evaporator, to form two parts of pipes.
  • the under-loading dehumidification and refrigeration apparatus further includes: a dispenser, where one end of the dispenser is connected to the throttling apparatus, and the other end is connected to the second evaporator section, and the dispenser is configured to: when two or more than two groups of air inlets and air outlets exist in the pipe in the interior of the evaporator, transmit a refrigerant to a second evaporator section between an air inlet and an air outlet of each group.
  • the throttling apparatus is connected in series between the first evaporator section and the second evaporator section, and configured to reduce the temperature and the pressure of the liquid refrigerant output by the first evaporator section, and then output the liquid refrigerant to the second evaporator section, which specifically includes:
  • an electronic expansion valve A When normal refrigeration without dehumidification is performed, an electronic expansion valve A performs throttling, and a throttling apparatus between evaporators is completely opened and achieves no throttling function; a refrigerant exhausted from a compressor is a high-temperature high-pressure gas, releases heat to outdoor air when passing through a condenser, and becomes a high-temperature high-pressure refrigerant liquid, and after passing through the electronic expansion valve A, the refrigerant becomes a low-pressure low-temperature refrigerant liquid, and a temperature of the refrigerant is lower than an indoor temperature, so that heat absorption is performed, thereby reducing a temperature of indoor air passing through the evaporator, and implementing a refrigeration function; and after absorbing heat, the refrigerant becomes a low-pressure gas whose temperature is raised, and flows back to the compressor for a next recirculation.
  • the electronic expansion valve A When constant temperature dehumidification needs to be performed, the electronic expansion valve A is completely opened to perform no throttling, and the throttling apparatus between evaporators performs throttling.
  • a refrigerant flows from the condenser into an evaporator 1, a temperature of the refrigerant is higher than an ambient temperature, so that heat release is performed to reduce the temperature; then after flowing through a throttling mechanism between evaporators, the liquid refrigerant becomes a low-pressure low-temperature refrigerant liquid, and flows into an evaporator 2, and a temperature of the liquid refrigerant is lower than the ambient temperature, so that heat absorption is performed to raise the temperature, and the liquid refrigerant becomes a gas and then flows back to the compressor for a recirculation. Therefore, when the refrigerant passes through the evaporator 1 and the evaporator 2, the temperature is first reduced and then raised.
  • the present invention may be implemented by using multiple implementation manners.
  • the embodiments of the present invention may be performed by particular software/hardware components. Persons skilled in the art consider that various different software or hardware combinations may also be applied to perform the embodiments of the present invention.
  • the foregoing particular operations performed by hardware may also be implemented by software.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Drying Of Gases (AREA)
  • Air Conditioning Control Device (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
EP15893991.8A 2015-05-30 2015-12-06 Procédé et dispositif de déshumidification et de réfrigération de charge légère Withdrawn EP3293467A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510298623.6A CN104896637A (zh) 2015-05-30 2015-05-30 一种轻载除湿制冷方法及装置
PCT/CN2015/096510 WO2016192347A1 (fr) 2015-05-30 2015-12-06 Procédé et dispositif de déshumidification et de réfrigération de charge légère

Publications (2)

Publication Number Publication Date
EP3293467A1 true EP3293467A1 (fr) 2018-03-14
EP3293467A4 EP3293467A4 (fr) 2018-05-02

Family

ID=54029462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15893991.8A Withdrawn EP3293467A4 (fr) 2015-05-30 2015-12-06 Procédé et dispositif de déshumidification et de réfrigération de charge légère

Country Status (4)

Country Link
EP (1) EP3293467A4 (fr)
CN (1) CN104896637A (fr)
BR (1) BR112017025830A2 (fr)
WO (1) WO2016192347A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112923450A (zh) * 2021-03-02 2021-06-08 宁波奥克斯电气股份有限公司 一种空调器及除雾方法
WO2023154461A1 (fr) * 2022-02-11 2023-08-17 Honeywell International Inc. Procédé de formation de systèmes à fluide frigorigène

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896637A (zh) * 2015-05-30 2015-09-09 华为技术有限公司 一种轻载除湿制冷方法及装置
CN107120746B (zh) * 2016-02-25 2020-06-02 维谛技术有限公司 一种复合型制冷除湿方法与制冷除湿复合系统
CN105864920B (zh) * 2016-03-31 2019-02-19 华为技术有限公司 一种轻载除湿方法及空调
CN106247655B (zh) * 2016-07-25 2019-03-08 华为技术有限公司 一种轻载除湿制冷方法及装置
CN106731534A (zh) * 2016-12-21 2017-05-31 上海神开石油化工装备股份有限公司 一种空气湿度调节装置
CN108106034A (zh) * 2017-11-10 2018-06-01 华为数字技术（苏州）有限公司 制冷装置及其控制方法、装置、制冷系统
CN111059630B (zh) * 2019-12-31 2021-02-19 珠海格力电器股份有限公司 空调室内机和空调系统
CN112181015B (zh) * 2020-09-02 2022-08-23 重庆邮电大学 一种微型快速温变系统
CN112413916B (zh) * 2020-11-16 2022-01-07 中科赛凌（北京）科技有限公司 一种冷热气喷射装置
CN114719351A (zh) * 2022-04-08 2022-07-08 珠海市金品创业共享平台科技有限公司 一种热泵型三管式空调系统

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY130939A (en) * 1993-06-01 2007-07-31 Hitachi Ltd Air-conditioning equipment
JPH1130494A (ja) * 1997-05-16 1999-02-02 Hitachi Ltd 熱交換装置およびこれを用いた空気調和機
CN2305631Y (zh) * 1997-07-31 1999-01-27 四川省档案学会 可控温湿度的收储柜
JPH1183125A (ja) * 1997-09-16 1999-03-26 Hitachi Ltd 空気調和機
CN2447676Y (zh) * 2000-10-09 2001-09-12 高英发 可恒温的除湿装置
JP2004132573A (ja) * 2002-10-09 2004-04-30 Daikin Ind Ltd 空気調和機
CN1254648C (zh) * 2003-12-05 2006-05-03 清华大学 一种并联型热泵调温调湿机组
CN100504252C (zh) * 2006-06-27 2009-06-24 海尔集团公司 不降温除湿空调器
CN100504196C (zh) * 2006-09-21 2009-06-24 海尔集团公司 健康除湿空调器
WO2010015123A1 (fr) * 2008-08-06 2010-02-11 Electrolux (Hangzhou) Home Appliances Co., Ltd. Climatiseur déshumidificateur à température constante
CN201448954U (zh) * 2009-06-11 2010-05-05 珠海天济能源科技有限公司 除湿机
CN102486322B (zh) * 2010-12-06 2014-11-05 中国科学院理化技术研究所 调温除湿系统和方法
CN202066256U (zh) * 2010-12-20 2011-12-07 广东美的制冷设备有限公司 一种风冷空调系统
CN102425828B (zh) * 2011-09-15 2013-08-07 上海交通大学 一种适用于机房精密控制空调的节能装置
JP5949648B2 (ja) * 2013-04-18 2016-07-13 株式会社デンソー 冷凍サイクル装置
CN104515326B (zh) * 2013-09-29 2017-02-22 广东美的制冷设备有限公司 空调器及空调器的除湿方法
CN104896637A (zh) * 2015-05-30 2015-09-09 华为技术有限公司 一种轻载除湿制冷方法及装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112923450A (zh) * 2021-03-02 2021-06-08 宁波奥克斯电气股份有限公司 一种空调器及除雾方法
CN112923450B (zh) * 2021-03-02 2022-07-12 宁波奥克斯电气股份有限公司 一种空调器及除雾方法
WO2023154461A1 (fr) * 2022-02-11 2023-08-17 Honeywell International Inc. Procédé de formation de systèmes à fluide frigorigène

Also Published As

Publication number Publication date
CN104896637A (zh) 2015-09-09
EP3293467A4 (fr) 2018-05-02
BR112017025830A2 (pt) 2018-09-04
WO2016192347A1 (fr) 2016-12-08

Similar Documents

Publication Publication Date Title
EP3293467A1 (fr) Procédé et dispositif de déshumidification et de réfrigération de charge légère
US9206994B2 (en) Heat source system
EP3228958B1 (fr) Procédé et appareil de commande de liaison pour unités intérieures et extérieures de conditionneur d'air de précision
CN114838531B (zh) 用于调节换热器内的冷媒温度的方法、装置、空调器
CN107120793B (zh) 变频空调及其变频模块散热器防凝露控制方法
CN107228455B (zh) 一种空调器及控制方法
EP3101369B1 (fr) Système de pompe à chaleur à multiples divisions à fréquence variable à récupération de chaleur et son procédé de commande
EP2589889A1 (fr) Climatiseur à divisions multiples apte à réfrigérer et à chauffer simultanément
CN107631525B (zh) 一种双级压缩机空调系统及其控制方法和装置
US11320185B2 (en) Defrosting control method for multi-split system
CN107178833B (zh) 热回收外机系统和空调系统
CN108195099B (zh) 一种变频多联机及其控制方法
EP2833082A1 (fr) Dispositif de conditionnement d'air
CN105091427B (zh) 双级压缩中间补气系统电子膨胀阀的控制方法及空调器
EP2863152A1 (fr) Dispositif de conditionnement d'air
CN104154629A (zh) 一拖多空调系统的冷媒流量的控制方法及装置
CN104006445A (zh) 多联式空调器及其控制方法
CN210951663U (zh) 空调系统
CN102207323A (zh) 空调制冷剂量的自动调整装置及其调整方法
CN106440137A (zh) 一种节能空调系统和制冷方法
CN104764126A (zh) 一种双冷源变频精密空调机组
CN114484944A (zh) 自过冷结构及空调
CN207471687U (zh) 空调系统及具有该空调系统的空调器
CN104879950A (zh) 空调一体机系统及其控制方法
CN208653007U (zh) 制冷设备

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20171207

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

A4 Supplementary search report drawn up and despatched

Effective date: 20180403

RIC1 Information provided on ipc code assigned before grant

Ipc: F25B 5/04 20060101ALI20180326BHEP

Ipc: F25B 1/00 20060101AFI20180326BHEP

Ipc: F25B 6/04 20060101ALI20180326BHEP

Ipc: F25B 39/02 20060101ALI20180326BHEP

Ipc: F25B 49/02 20060101ALI20180326BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20181031