CN115597131A - Outdoor unit and multifunctional water source multi-split system - Google Patents

Outdoor unit and multifunctional water source multi-split system Download PDF

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Publication number
CN115597131A
CN115597131A CN202211254786.0A CN202211254786A CN115597131A CN 115597131 A CN115597131 A CN 115597131A CN 202211254786 A CN202211254786 A CN 202211254786A CN 115597131 A CN115597131 A CN 115597131A
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China
Prior art keywords
water
way valve
port
flow channel
valve
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CN202211254786.0A
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Chinese (zh)
Inventor
王远鹏
郭宁
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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Application filed by Qingdao Hisense Hitachi Air Conditioning System Co Ltd filed Critical Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority to CN202211254786.0A priority Critical patent/CN115597131A/en
Publication of CN115597131A publication Critical patent/CN115597131A/en
Priority to PCT/CN2023/124529 priority patent/WO2024078619A1/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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/16—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to 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
    • 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
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing 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
    • F25B41/31—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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The invention provides an outdoor unit and a multifunctional water source multi-split system, which can solve the problems of high use limitation and high cost of the existing water source machine if the existing water source machine needs to realize multiple functions. A first port of a first four-way valve of the outdoor unit is connected to the gas side stop valve, a second port of the first four-way valve is connected to the gas outlet of the compressor, a third port of the first four-way valve is connected to the gas inlet of the compressor, a fourth port of the first four-way valve is connected to one end of a second refrigerant flow channel of the second plate heat exchanger, and the other end of the second refrigerant flow channel is connected to the liquid side stop valve through a second electronic expansion valve; the second port of the second four-way valve is connected to the air outlet of the compressor, the third port of the second four-way valve is connected to the air inlet of the compressor, the fourth port of the second four-way valve is connected to one end of the first refrigerant flow channel, and the other end of the first refrigerant flow channel is connected to the liquid side stop valve through the first electronic expansion valve. The outdoor unit and the multifunctional water source multi-split system realize independent refrigeration and hot water without indoor unit operation or indoor unit operation, and can reduce cost; the indoor unit can also realize refrigeration heat recovery and hot water production during operation.

Description

Outdoor unit and multifunctional water source multi-split system
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to an outdoor unit and a multifunctional water source multi-split system.
Background
In the prior art, a water source multiple on-line system, which is referred to as a water source machine for short, is provided with an outdoor unit as shown in fig. 1, which is generally provided with only one outdoor plate heat exchanger 1 serving as a water source side heat exchanger, one of the flow channels of the outdoor plate heat exchanger 1 is a refrigerant flow channel, the other flow channel is a water flow channel, heat exchange between refrigerant and water is realized in the outdoor plate heat exchanger 1, so that the refrigeration and heating functions of an air conditioner are realized, and the arrow direction in fig. 1 is a water flow direction.
If other functions need to be realized to current water source machine, for example, prepare the hot and cold water, need arrange one set of indoor set 2 alone again, the indoor set is provided with indoor plate heat exchanger 3 and is used for preparing the hot and cold water with the refrigerant heat transfer, to user's output hot and cold water, as shown in fig. 2, if the water source machine of prior art needs to prepare the hot and cold water promptly, requires the user to dispose indoor set 2, and indoor set 2 must open when preparing the hot and cold water for use limitation is high, and the cost is higher, and it can't realize heat recovery simultaneously and prepares hot water.
Disclosure of Invention
The invention provides an outdoor unit and a multifunctional water source multi-split system, which can solve the problems of high use limitation and high cost caused by the fact that an additional set of indoor unit needs to be arranged if the water source unit needs to realize multiple functions in the prior art.
In some embodiments of the present application, there is provided an outdoor unit including:
a compressor;
the first plate heat exchanger comprises a first refrigerant flow channel and a first water flow channel;
the second plate heat exchanger comprises a second refrigerant flow channel and a second water flow channel, wherein one of the second water flow channel and the first water flow channel is used for connecting water system terminal equipment, and the other one of the second water flow channel and the first water flow channel is used for connecting a water source;
a first four-way valve, a first port of which is connected to the gas-side stop valve, a second port of which is connected to the gas outlet of the compressor, a third port of which is connected to the gas inlet of the compressor, a fourth port of which is connected to one end of the second refrigerant flow channel, and the other end of the second refrigerant flow channel is connected to the liquid-side stop valve through a second electronic expansion valve;
and a second port of the second four-way valve is connected to the air outlet of the compressor, a third port of the second four-way valve is connected to the air inlet of the compressor, a fourth port of the second four-way valve is connected to one end of the first refrigerant flow channel, and the other end of the first refrigerant flow channel is connected to the liquid side stop valve through a first electronic expansion valve.
According to the outdoor unit and the multifunctional water source multi-split system in some embodiments of the application, the first plate type heat exchanger, the second plate type heat exchanger, the first four-way valve, the second four-way valve, the gas side stop valve and the liquid side stop valve are arranged in the outdoor unit, so that independent heating and independent cooling of water can be realized when the outdoor unit operates independently, and the indoor unit does not need to operate or be configured, so that the cost for independently preparing cold water and hot water can be reduced; when the indoor unit operates, air-conditioning refrigeration and heat recovery water heating can be realized, the functions of the multifunctional water source multi-split air-conditioning system are further enriched, the energy consumption of the system is reduced, and the use convenience is improved.
In some embodiments of the present application, a first water pump is disposed on the first water flow passage to provide a driving force for water flowing in the first water flow passage; and a second water pump is arranged on the second water flow channel to provide driving force for water flowing in the second water flow channel.
In some embodiments of the present disclosure, a first pipeline is connected between the first port of the first four-way valve and the third port thereof, the first pipeline is provided with a first capillary, the first port of the second four-way valve is connected to the third port thereof through a second pipeline, and the second pipeline is provided with a second capillary.
In some embodiments of the present application, a third line is connected to the air outlet of the compressor, and the third line is connected to the second port of the first four-way valve and the second port of the second four-way valve by a three-way member.
In some embodiments of the present application, there is also provided a multi-functional water source multi-split system, including a water system terminal device, and further including the outdoor unit, where the water system terminal device is connected to one of the first water flow channel and the second water flow channel of the outdoor unit.
In some embodiments of the present application, the multifunctional water source multiple online system further includes an indoor unit, the indoor unit is provided with an indoor heat exchanger, one port of the indoor heat exchanger is connected to the gas side stop valve of the outdoor unit, and another port of the indoor heat exchanger is connected to the liquid side stop valve of the outdoor unit through a throttling device.
In some embodiments of the present application, the multifunctional water source multi-split system comprises the following working modes: a single hot water mode and a single cold water mode.
In some embodiments of the present application, the individual hot water mode specifically operates as follows: the gas side stop valve and the liquid side stop valve are both closed, the first water flow channel is connected with a water system terminal device, the second water flow channel is connected with a water source, the first electronic expansion valve is fully opened, the second electronic expansion valve is throttled, and a refrigerant is output from the gas outlet of the compressor and sequentially flows through the second four-way valve, the first plate heat exchanger, the first electronic expansion valve, the second plate heat exchanger and the first four-way valve and then flows back to the compressor through the gas inlet of the compressor;
the individual refrigeration water mode specifically operates as follows: the air side stop valve and the liquid side stop valve are both closed, the first water flow channel is connected with a water system terminal device, the second water flow channel is connected with a water source, the first electronic expansion valve is used for throttling, the second electronic expansion valve is fully opened, and a refrigerant is output from an air outlet of the compressor and sequentially flows through the first four-way valve, the second plate type heat exchanger, the second electronic expansion valve, the first plate type heat exchanger and the second four-way valve and then flows back to the compressor through an air inlet of the compressor.
In some embodiments of the present application, the multifunctional water source multiple online system comprises the following operation modes: cooling + heat recovery heating water mode.
In some embodiments of the present application, the cooling + heating water mode specifically operates as follows: the indoor unit is in refrigeration operation, the gas side stop valve and the liquid side stop valve are opened, the first water flow passage is connected with a water system terminal device, the second water flow passage is connected with a water source, the first electronic expansion valve is fully opened, the second electronic expansion valve is fully opened, a refrigerant is output from the air outlet of the compressor and divided into two paths to flow through the first four-way valve and the second four-way valve respectively, the refrigerant flowing through the first four-way valve flows through the second plate heat exchanger, the second electronic expansion valve, the liquid side stop valve and the throttling device to enter the indoor heat exchanger, then flows back to the compressor through the gas side stop valve and the first four-way valve, and meanwhile, the refrigerant flowing through the second four-way valve flows through the first plate heat exchanger, the first electronic expansion valve, the liquid side stop valve and the throttling device of the indoor unit to enter the indoor heat exchanger and then flows back to the compressor through the gas side stop valve and the first four-way valve.
Drawings
FIG. 1 illustrates a prior art multi-functional water source a schematic diagram of the outdoor unit structure of the multi-split air conditioning system;
FIG. 2 is a schematic diagram of a prior art multi-functional water source multi-split system;
fig. 3 is a schematic diagram illustrating an outdoor unit structure of a water source multi-split air conditioning system according to a first embodiment;
fig. 4 shows a schematic diagram of a water source multi-split system according to a first embodiment;
FIG. 5 is a schematic diagram illustrating the operation principle of the water source multi-split system when the water source multi-split system separately heats water according to the first embodiment;
FIG. 6 is a schematic diagram illustrating the operation principle of the water source multi-split system when the water source multi-split system separately refrigerates water according to the first embodiment;
FIG. 7 is a schematic diagram of a water source multi-split system according to a second embodiment;
FIG. 8 is a schematic diagram illustrating the operation principle of the water source multi-split system for separately producing hot water according to the second embodiment;
FIG. 9 is a schematic diagram illustrating the operation principle of the system when the water source multi-split system separately produces cold water according to the second embodiment;
fig. 10 is a schematic diagram illustrating the operation principle of the water source multiple on-line system for cooling and heat recovery to heat water according to the second embodiment.
Reference numbers in fig. 1 and 2:
1-outdoor plate heat exchanger; 2-an indoor unit; 3-indoor plate heat exchanger.
Reference numerals in fig. 3 to 10:
1-an outdoor unit; 10-a compressor; 11-compressor outlet; 12-compressor air intake; 20-a first four-way valve; 21-a first port of a first four-way valve; 22-a second port of the first four-way valve; 23-a third port of the first four-way valve; 24-a fourth port of the first four-way valve; 30-a second four-way valve; 31-a first port of a second four-way valve; 32-a second port of the second four-way valve; 33-a third port of the second four-way valve; 34-a fourth port of the second four-way valve; 40-a first expansion valve; 50-gas side stop valve; 60-liquid side stop valve; 70-a second expansion valve; 80-a first plate heat exchanger; 81-a first refrigerant channel; 82-a first water flow channel; 90-a second plate heat exchanger; 91-a second refrigerant channel; 92-a second water flow channel; 100-a first water pump; 110-a second water pump; 120-a first conduit; 130-a first capillary; 140-a second conduit; 150-a second capillary; 160-a third line;
2-water system terminal equipment;
3-an indoor unit; 3-1-indoor heat exchanger; 3-2-throttling device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
The air conditioner of the present invention performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool or heat an indoor space.
The low-temperature and low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas in a high-temperature and high-pressure state, and the compressed refrigerant gas is discharged. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the ambient environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
The water source multi-split system (water source machine) combines a water source heat pump technology with an air source multi-split system, the cold and hot source sides are the same as the water source heat pump system, water is used as an energy transportation medium, the indoor side is the same as the multi-split system, and a refrigerant is used as the energy transportation medium. The cold and heat sources of the water source multi-split system are usually underground water, surface water and the like.
In a water source machine in the prior art, as shown in fig. 1, an outdoor unit of the water source machine is generally provided with only one outdoor plate heat exchanger 1 serving as a water source side heat exchanger, one of flow channels of the outdoor plate heat exchanger 1 is a refrigerant flow channel, and the other flow channel is a water flow channel, so that heat exchange between refrigerant and water is realized in the outdoor plate heat exchanger 1, thereby realizing a cooling and heating function of an air conditioner, and an arrow direction in fig. 1 is a water flow direction.
If other functions need to be realized to current water source machine, for example, prepare hot and cold water, need to arrange one set of indoor set 2 alone again, indoor set is provided with indoor plate heat exchanger 3 and is used for preparing hot and cold water with the refrigerant heat transfer, to user's output hot and cold water, as shown in fig. 1, if prior art water source machine need prepare hot and cold water indoor set 2 must be opened promptly, then require user's side must dispose indoor set 2, use the limitation height, can not be applicable to the disclosure that does not have the indoor set, and the cost is higher, and it can't realize heat recovery simultaneously and prepare hot water.
Based on this, this application provides an outdoor unit and many on line systems of water source, can solve the above-mentioned problem that prior art exists. The following describes the specific structure and operation principle of the outdoor unit and the water source multi-split air conditioning system in detail with specific embodiments.
Example one
Fig. 3 is a schematic diagram illustrating an outdoor unit of a water source multiple on-line system according to a first embodiment of the present invention, and as shown in fig. 3, an outdoor unit 1 according to this embodiment includes a compressor 10, a first plate heat exchanger 80, a second plate heat exchanger 90, a first four-way valve 20, and a second four-way valve 30, which are connected in a refrigerant flow order to form a loop.
The compressor 10 is provided with a compressor outlet 11 (also referred to as an exhaust port) and a compressor inlet 12 (also referred to as an intake port).
The first plate heat exchanger 80 includes a first refrigerant flow passage 81 and a first water flow passage 82, where the first refrigerant flow passage 81 is used for refrigerant to flow through, and the first water flow passage 82 is used for water to flow through.
The second plate heat exchanger 90 includes a second refrigerant flow channel 91 and a second water flow channel 92, the second refrigerant flow channel 91 is used for refrigerant to flow through, and the second water flow channel 92 is used for water to flow through; in second water runner 92 and first water runner 82, one of them is used for connecting water system terminal equipment 2, for example water tank, ground heating pipe etc. another is used for connecting the water source, first plate heat exchanger 80 connects the user side in this embodiment, and first water runner 82 connects water system terminal equipment 2 promptly, and the end of intaking of first water runner 82 connects the end of intaking of water system terminal equipment 2, and the end of intaking of first water runner 82 connects the end of the play water of water system terminal equipment 2, and the end of intaking of second water runner 92 connects the end of the play water of water source.
A first four-way valve first port 21 is connected to a gas side stop valve 50, a first four-way valve second port 22 is connected to the compressor gas outlet 11, a first four-way valve third port 23 is connected to the compressor gas inlet 12, a first four-way valve fourth port 24 is connected to one end of the second refrigerant flow passage 91, and the other end of the second refrigerant flow passage 91 is connected to a liquid side stop valve 60 through the second expansion valve 70.
The second four-way valve second port 32 is connected to the compressor outlet port 11, the second four-way valve third port 33 is connected to the compressor inlet port 12, the second four-way valve fourth port 34 is connected to one end of the first refrigerant flow passage 81, and the other end of the first refrigerant flow passage 81 is also connected to the liquid side shutoff valve 60 through the first expansion valve 40.
By arranging the first plate type heat exchanger 80, the second plate type heat exchanger 90, the first four-way valve 20, the second four-way valve 30, the air side stop valve 50 and the liquid side stop valve 60 in the outdoor unit 1, the independent heating and cooling of water can be realized when the outdoor unit 1 operates independently, and the operation of an indoor unit or the configuration of the indoor unit is not needed, so that the cost for independently preparing cold water and hot water can be reduced; when the indoor unit operates, air-conditioning refrigeration and heat recovery water heating can be realized, the functions of the multifunctional water source multi-split air-conditioning system are further enriched, the energy consumption of the system is reduced, and the use convenience is improved.
In this embodiment, a first water pump 100 is provided on the first water flow passage 82 to provide a driving force for the water flowing in the first water flow passage 82; a second water pump 110 is provided on the second water flow passage 92 to provide a driving force for the flow of water in the second water flow passage 92. Specifically, the first water pump 100 of the present embodiment is provided on the water inlet end of the first water flow passage 82, and the second water pump 110 is provided on the water inlet end of the second water flow passage 92.
In this embodiment, a first pipeline 120 is connected between the first port 21 of the first four-way valve and the third port 23 of the first four-way valve, and a first capillary tube 130 is arranged on the first pipeline 120, that is, the first pipeline 120 is communicated with a section of the first capillary tube 130, so that when no indoor unit, no air-side stop valve 50, and no liquid-side stop valve 60 are closed, the refrigerant in the first four-way valve 20 can be in a flowing state all the time, and the liquid impact phenomenon at the instant of reversing the first four-way valve 20 is prevented, thereby protecting the first four-way valve 20; first four-way valve first port 31 can be closed, or as shown in fig. 3, first four-way valve first port 31 and second four-way valve third port 33 are connected through second pipeline 140, second capillary 150 is arranged on second pipeline 140, that is, second pipeline 140 is communicated with a section of second capillary 150, so that refrigerant in second four-way valve 30 is always in a flowing state, liquid shock phenomenon at the moment of reversing second four-way valve 30 is prevented, and second four-way valve 30 can be protected.
In the present embodiment, the third pipeline 160 is connected to the compressor air outlet 11, and the third pipeline 160 is connected to the first four-way valve second port 22 and the second four-way valve second port 32 through a three-way fitting, so that the first four-way valve second port 22 and the second four-way valve second port 32 are simultaneously connected to the compressor air outlet 11.
Fig. 4 shows a schematic diagram of a structure of a water source multi-split system according to a first embodiment, as shown in fig. 4, the embodiment further provides a multi-functional water source multi-split system, which includes a water system terminal device 2, where the water system terminal device 2 may be a water tank, a floor heating pipe, and the like, and further includes an outdoor unit 1 described in this embodiment, the water system terminal device 2 is connected to one of a first water flow channel 82 and a second water flow channel 92 of the outdoor unit 1, and the other of the first water flow channel 82 and the second water flow channel 92 is connected to a water source (not shown), in this embodiment, the first plate heat exchanger 80 is connected to a user side, that is, the first water flow channel 82 is connected to the water system terminal device 2, a water outlet end of the first water flow channel 82 is connected to a water inlet end of the water system terminal device 2, a water inlet end of the first water flow channel 82 is connected to a water outlet end of the water system terminal device 2, and a water inlet end of the second water flow channel 92 is connected to a water outlet end of the water source.
The multifunctional water source multi-split system in the embodiment comprises the following working modes: a single hot water mode and a single cold water mode.
Fig. 5 is a schematic diagram illustrating an operation principle of the water source multi-split system when the water source multi-split system separately heats water, as shown in fig. 5, at this time, there is no indoor unit in the water source multi-split system, and a separate heating mode specifically operates as follows: the gas side stop valve 50 and the liquid side stop valve 60 are both closed, the pipeline where the gas side stop valve 50 and the liquid side stop valve 60 are located does not flow the refrigerant although the refrigerant exists, the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 is used as a condenser, and the second plate heat exchanger 90 is used as an evaporator; the third port 23 of the first four-way valve is communicated with the fourth port 24 of the first four-way valve, the first port 21 of the first four-way valve is communicated with the second port 22 of the first four-way valve, the second port 32 of the second four-way valve is communicated with the fourth port 34 of the second four-way valve, the first port 31 of the second four-way valve is communicated with the third port 33 of the second four-way valve, the high-temperature and high-pressure gaseous refrigerant is output from the air outlet 11 of the compressor, sequentially flows through the second four-way valve 30 and the first plate heat exchanger 80 to be changed into high-pressure medium-temperature liquid refrigerant, then flows through the first expansion valve 40 and the second expansion valve 70, flows through the second plate heat exchanger 90 to be changed into low-pressure low-temperature gaseous refrigerant, and finally flows through the first four-way valve 20 and flows back to the compressor 10 through the air inlet 12 of the compressor.
Fig. 6 is a schematic diagram illustrating an operation principle of the water source multi-split system when the water source multi-split system separately refrigerates water according to the first embodiment, as shown in fig. 6, at this time, there is no indoor unit in the water source multi-split system, and a separate refrigeration water mode specifically operates as follows: the gas side stop valve 50 and the liquid side stop valve 60 are both closed, even if a refrigerant exists in a pipeline in which the gas side stop valve 50 and the liquid side stop valve 60 are positioned, the refrigerant does not flow, the first expansion valve 40 is throttled, the second expansion valve 70 is fully opened, the first plate type heat exchanger 80 serves as an evaporator, and the second plate type heat exchanger 90 serves as a condenser; the first four-way valve second port 22 and the first four-way valve fourth port 24 are communicated, the first four-way valve first port 21 and the first four-way valve third port 23 are communicated, the second four-way valve third port 33 and the second four-way valve fourth port 34 are communicated, the second four-way valve first port 31 and the second four-way valve second port 32 are communicated, and the high-temperature and high-pressure gaseous refrigerant is output from the compressor air outlet 11 and flows through the first four-way valve 20, the second plate type heat exchanger 90, the second expansion valve 70, the first expansion valve 40, the first plate type heat exchanger 80 and the second four-way valve 30 in sequence and then flows back to the compressor 10 through the compressor air inlet 12.
The outdoor unit and the water source multi-split system in this embodiment can realize the functions of independent refrigeration and independent water heating.
Example two
In this embodiment, the first water flow passage 82 is still connected to the water system terminal device 2, and the second water flow passage 92 is still connected to a water source (not shown).
Fig. 7 shows a schematic diagram of a water source multiple on-line system according to a second embodiment, as shown in fig. 7, in addition to the outdoor unit 1 and the water system terminal device 2 according to the first embodiment, the multifunctional water source multiple on-line system of the present embodiment further includes an indoor unit 3, specifically two indoor units 3, each indoor unit 3 is provided with an indoor heat exchanger 3-1, one port of the indoor heat exchanger 3-1 is connected to a gas side stop valve 50 of the outdoor unit 1, and the other port of the indoor heat exchanger 3-1 is connected to a liquid side stop valve 60 of the outdoor unit 1 through a throttling device 3-2 (specifically, an electronic expansion valve).
Fig. 8 is a schematic diagram illustrating the operation principle of the water source multi-split system when the water source multi-split system is used for heating water alone according to the second embodiment, as shown in fig. 8, the indoor unit 3 is not started, the gas side stop valve 50 and the liquid side stop valve 60 can be kept open, and since the indoor unit 3 is not started, the refrigerant does not flow or has a low flow rate in the indoor heat exchanger 3-1; the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 is used as a condenser, and the second plate heat exchanger 90 is used as an evaporator; the third port 23 of the first four-way valve is communicated with the fourth port 24 of the first four-way valve, the first port 21 of the first four-way valve is communicated with the second port 22 of the first four-way valve, the second port 32 of the second four-way valve is communicated with the fourth port 34 of the second four-way valve, the first port 31 of the second four-way valve is communicated with the third port 33 of the second four-way valve, the high-temperature and high-pressure gaseous refrigerant is output from the air outlet 11 of the compressor and sequentially flows through the second four-way valve 30 and the first plate heat exchanger 80 to become high-pressure medium-temperature liquid refrigerant, then flows through the first expansion valve 40 and the second expansion valve 70 for throttling and flows through the second plate heat exchanger 90 to become low-pressure low-temperature gaseous refrigerant, and finally flows through the first four-way valve 20 and flows back to the compressor 10 through the air inlet 12 of the compressor.
Fig. 9 is a schematic view illustrating the operation principle of the water source multi-split system according to the second embodiment when the water source multi-split system separately refrigerates water, as shown in fig. 9, the indoor unit 3 is not started, the gas side stop valve 50 and the liquid side stop valve 60 can be kept open, and since the indoor unit 3 is not started, the refrigerant does not flow in the indoor heat exchanger 3-1 or the flow rate is slow; the individual refrigeration water mode specifically operates as follows: the first expansion valve 40 is throttled, the second expansion valve 70 is fully opened, the first plate heat exchanger 80 is used as an evaporator, and the second plate heat exchanger 90 is used as a condenser; the first four-way valve second port 22 and the first four-way valve fourth port 24 are communicated, the first four-way valve first port 21 and the first four-way valve third port 23 are communicated, the second four-way valve third port 33 and the second four-way valve fourth port 34 are communicated, the second four-way valve first port 31 and the second four-way valve second port 32 are communicated, and the high-temperature and high-pressure gaseous refrigerant is output from the compressor air outlet 11 and flows back to the compressor 10 through the air inlet of the compressor 10 after sequentially flowing through the first four-way valve 20, the second plate heat exchanger 90, the second expansion valve 70, the first expansion valve 40, the first plate heat exchanger 80 and the second four-way valve 30.
Different from the first embodiment, the water source multiple on-line system in the present embodiment can also realize the functions of cooling and heat recovery to heat water, and fig. 10 is a schematic diagram illustrating an operation principle of the water source multiple on-line system in the second embodiment when cooling and heat recovery to heat water. As shown in fig. 10, the cooling and heating water mode specifically operates as follows: the indoor unit 3 is in refrigerating operation, the throttling device 3-2 is in a throttling state, the gas side stop valve 50 and the liquid side stop valve 60 are opened, the first expansion valve 40 is fully opened, the second expansion valve 70 is fully opened, and the first plate type heat exchanger 80 and the second plate type heat exchanger 90 are both used as condensers; a second port 22 of the first four-way valve, a fourth port 24 of the first four-way valve, a first port 21 of the first four-way valve, a third port 23 of the first four-way valve, a second port 32 of the second four-way valve, a fourth port 34 of the second four-way valve, a first port 31 of the second four-way valve, and a third port 33 of the second four-way valve are communicated, a high-temperature and high-pressure gaseous refrigerant is output from a gas outlet 11 of the compressor and divided into two paths to flow through the first four-way valve 20 and the second four-way valve 30 respectively, the refrigerant flowing through the first four-way valve 20 then flows through a second plate heat exchanger 90, a second expansion valve 70, a liquid side stop valve 60, and a throttling device 3-2 of the indoor unit 3 to enter an indoor heat exchanger 3-1, and then flows back to the compressor 10 through a gas side stop valve 50 and the first four-way valve 20; meanwhile, the refrigerant flowing through the second four-way valve 30 then flows through the first plate heat exchanger 80, the first expansion valve 40, the liquid side stop valve 60, the throttle device 3-2 of the indoor unit 3, enters the indoor heat exchanger 3-1, and then flows back to the compressor 10 through the gas side stop valve 50 and the first four-way valve 20.
The outdoor unit and the water source multi-split system in this embodiment can realize the functions of independent cooling water, independent heating water and refrigeration and heat recovery heating water.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An outdoor unit, comprising:
a compressor;
the first plate heat exchanger comprises a first refrigerant flow channel and a first water flow channel;
the second plate heat exchanger comprises a second refrigerant flow channel and a second water flow channel, wherein one of the second water flow channel and the first water flow channel is used for connecting water system terminal equipment, and the other one of the second water flow channel and the first water flow channel is used for connecting a water source;
a first four-way valve, a first port of which is connected to the gas-side stop valve, a second port of which is connected to the gas outlet of the compressor, a third port of which is connected to the gas inlet of the compressor, a fourth port of which is connected to one end of the second refrigerant flow channel, and the other end of the second refrigerant flow channel is connected to the liquid-side stop valve through a second electronic expansion valve;
and a second port of the second four-way valve is connected to the gas outlet of the compressor, a third port of the second four-way valve is connected to the gas inlet of the compressor, a fourth port of the second four-way valve is connected to one end of the first refrigerant flow channel, and the other end of the first refrigerant flow channel is connected to the liquid side stop valve through a first electronic expansion valve.
2. The outdoor unit of claim 1,
the first water flow channel is provided with a first water pump to provide driving force for water flowing in the first water flow channel;
and a second water pump is arranged on the second water flow channel to provide driving force for water flowing in the second water flow channel.
3. The outdoor unit of claim 1,
a first pipeline is connected between the first port of the first four-way valve and the third port of the first four-way valve, a first capillary tube is arranged on the first pipeline, the first port of the second four-way valve is connected with the third port of the second four-way valve through a second pipeline, and a second capillary tube is arranged on the second pipeline.
4. The indoor unit according to claim 1,
and the air outlet of the compressor is connected with a third pipeline, and the third pipeline is respectively connected with the second port of the first four-way valve and the second port of the second four-way valve through a three-way piece.
5. A multifunctional water source multi-online system comprises a water system terminal device and is characterized in that,
the outdoor unit of any one of claims 1 to 4, further comprising a terminal device of a water system connected to one of the first and second water flow paths of the outdoor unit.
6. The multiple on-line multifunctional water supply system as claimed in claim 5,
the outdoor unit is characterized by further comprising an indoor unit, wherein the indoor unit is provided with an indoor heat exchanger, one port of the indoor heat exchanger is connected with the gas side stop valve of the outdoor unit, and the other port of the indoor heat exchanger is connected with the liquid side stop valve of the outdoor unit through a throttling device.
7. The multiple on-line multifunctional water supply system as claimed in claim 5,
the multifunctional water source multi-split system comprises the following working modes: a single hot water mode and a single cold water mode.
8. The multiple on-line multifunctional water supply system as claimed in claim 7,
the individual hot water heating mode specifically operates as follows: the gas side stop valve and the liquid side stop valve are both closed, the first water flow channel is connected with a water system terminal device, the second water flow channel is connected with a water source, the first electronic expansion valve is fully opened, the second electronic expansion valve is throttled, and a refrigerant is output from the gas outlet of the compressor and sequentially flows through the second four-way valve, the first plate heat exchanger, the first electronic expansion valve, the second plate heat exchanger and the first four-way valve and then flows back to the compressor through the gas inlet of the compressor;
the individual chilled water mode specifically operates as follows: the air side stop valve and the liquid side stop valve are both closed, the first water flow channel is connected with a water system terminal device, the second water flow channel is connected with a water source, the first electronic expansion valve is used for throttling, the second electronic expansion valve is fully opened, and a refrigerant is output from an air outlet of the compressor and sequentially flows through the first four-way valve, the second plate type heat exchanger, the second electronic expansion valve, the first plate type heat exchanger and the second four-way valve and then flows back into the compressor through an air inlet of the compressor.
9. The multiple on-line multifunctional water supply system as claimed in claim 6,
the multifunctional water source multi-split system comprises the following working modes: cooling + heat recovery heating water mode.
10. The multifunctional water source multi-split system as recited in claim 9,
the refrigeration and heating water mode specifically operates as follows: the indoor unit is in refrigeration operation, the gas side stop valve and the liquid side stop valve are opened, the first water flow channel is connected with a water system terminal device, the second water flow channel is connected with a water source, the first electronic expansion valve is fully opened, the second electronic expansion valve is fully opened, a refrigerant is output from the air outlet of the compressor and divided into two paths to respectively flow through the first four-way valve and the second four-way valve, the refrigerant flowing through the first four-way valve then flows through the second plate heat exchanger, the second electronic expansion valve, the liquid side stop valve and the throttling device to enter the indoor heat exchanger, then flows back to the compressor through the gas side stop valve and the first four-way valve, and meanwhile, the refrigerant flowing through the second four-way valve then flows through the first plate heat exchanger, the first electronic expansion valve, the liquid side stop valve and the throttling device of the indoor unit to enter the indoor heat exchanger and then flows back to the compressor through the gas side stop valve and the first four-way valve.
CN202211254786.0A 2022-10-13 2022-10-13 Outdoor unit and multifunctional water source multi-split system Pending CN115597131A (en)

Priority Applications (2)

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CN202211254786.0A CN115597131A (en) 2022-10-13 2022-10-13 Outdoor unit and multifunctional water source multi-split system
PCT/CN2023/124529 WO2024078619A1 (en) 2022-10-13 2023-10-13 Outdoor unit and multifunctional water-source multi-split system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211254786.0A CN115597131A (en) 2022-10-13 2022-10-13 Outdoor unit and multifunctional water source multi-split system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024078619A1 (en) * 2022-10-13 2024-04-18 青岛海信日立空调系统有限公司 Outdoor unit and multifunctional water-source multi-split system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024078619A1 (en) * 2022-10-13 2024-04-18 青岛海信日立空调系统有限公司 Outdoor unit and multifunctional water-source multi-split system

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