WO2024078619A1 - Unité extérieure et système multifonctionnel à divisions multiples de source d'eau - Google Patents

Unité extérieure et système multifonctionnel à divisions multiples de source d'eau Download PDF

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Publication number
WO2024078619A1
WO2024078619A1 PCT/CN2023/124529 CN2023124529W WO2024078619A1 WO 2024078619 A1 WO2024078619 A1 WO 2024078619A1 CN 2023124529 W CN2023124529 W CN 2023124529W WO 2024078619 A1 WO2024078619 A1 WO 2024078619A1
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WIPO (PCT)
Prior art keywords
port
water
way valve
flow channel
valve
Prior art date
Application number
PCT/CN2023/124529
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English (en)
Chinese (zh)
Inventor
王远鹏
郭宁
Original Assignee
青岛海信日立空调系统有限公司
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.)
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Publication date
Priority claimed from CN202211253954.4A external-priority patent/CN115597130A/zh
Priority claimed from CN202211254786.0A external-priority patent/CN115597131A/zh
Application filed by 青岛海信日立空调系统有限公司 filed Critical 青岛海信日立空调系统有限公司
Publication of WO2024078619A1 publication Critical patent/WO2024078619A1/fr

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Classifications

    • 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

Definitions

  • the present application relates to the technical field of air conditioning, and in particular to an outdoor unit and a multi-functional water source multi-split system.
  • the water source multi-split system (water source machine) combines the water source heat pump technology with the air source multi-split system.
  • the cold and hot source side is the same as the water source heat pump system, using water as the energy transport medium, and the indoor side is the same as the multi-split system, using refrigerant as the energy transport medium.
  • an outdoor unit comprising: a compressor, a first plate heat exchanger, a second plate heat exchanger, a first four-way valve and a second four-way valve.
  • 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 configured to be connected to a water system terminal device, and the other is configured to be connected to a water source.
  • the first four-way valve has a first port connected to a third gas-side stop valve, a second port connected to an air outlet of the compressor, a third port connected to an air inlet of the compressor, a fourth port 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.
  • the second four-way valve has a second port connected to an air outlet of the compressor, a third port connected to an air inlet of the compressor, and a fourth port 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.
  • a multifunctional water source multi-split system comprising a water system terminal device and an outdoor unit as described in any of the above embodiments, wherein 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.
  • an outdoor unit comprising: a compressor, a first plate heat exchanger, a second plate heat exchanger, a first four-way valve, a second four-way valve and a third four-way valve.
  • 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 configured to be connected to a water system terminal device, and the other is configured to be connected to a water source.
  • the first four-way valve has a first port connected to the first gas side stop valve, a second port connected to the air outlet of the compressor, and a third port connected to the air inlet of the compressor and connected to the second gas side stop valve.
  • the second four-way valve has a second port connected to the air outlet of the compressor, a third port connected to the air inlet of the compressor and connected to the second gas side stop valve, and a fourth port 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 expansion valve.
  • a third four-way valve wherein the second port thereof is connected to the air outlet of the compressor, the third port thereof is connected to the air inlet of the compressor and is connected to the second gas-side stop valve, the fourth port thereof 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 via the first expansion valve.
  • a multifunctional water source machine including a water system terminal device and an outdoor unit as described in any of the above embodiments, wherein 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.
  • FIG1 shows a schematic diagram of the structure of an outdoor unit of a multifunctional water source multi-split system in the related art
  • FIG2 shows a schematic diagram of the structure of a multifunctional water source multi-connection system in the related art
  • FIG3 shows a schematic diagram of the structure of an outdoor unit of a water source multi-split system in some embodiments
  • FIG4 shows a schematic diagram of the structure of a water source multi-connection system in some embodiments
  • FIG5 is a schematic diagram showing the operating principle of a water source multi-split system in some embodiments when hot water is produced independently;
  • FIG6 is a schematic diagram showing the operating principle of a water source multi-split system when cooling water alone in some embodiments
  • FIG7 shows a schematic diagram of the structure of a water source multi-connection system in some other embodiments.
  • FIG8 is a schematic diagram showing the operating principle of a water source multi-split system for producing hot water alone in some other embodiments
  • FIG9 is a schematic diagram showing the operating principle of a water source multi-split system when cooling water alone in some other embodiments
  • FIG10 is a schematic diagram showing the operating principle of a water source multi-split system for cooling, heating, recycling and hot water production in some other embodiments;
  • FIG11 shows a schematic diagram of the structure of an outdoor unit of a water source multi-split system in some other embodiments
  • FIG12 shows a schematic diagram of the structure of a water source multi-connection system in some other embodiments.
  • FIG13 is a schematic diagram showing the operating principle of a water source multi-split system for producing hot water alone in some other embodiments
  • FIG14 is a schematic diagram showing the operating principle of a water source multi-split system in other embodiments when the water is cooled alone;
  • FIG15 shows a schematic diagram of the structure of a water source multi-connection system in some other embodiments.
  • FIG16 is a schematic diagram showing the operating principle of a water source multi-split system for producing hot water alone in some other embodiments
  • FIG. 17 is a schematic diagram showing the operating principle of a water source multi-split system when cooling water alone in some other embodiments;
  • FIG. 18 is a schematic diagram showing the operating principle of a water source multi-split system for cooling + heat recovery and hot water production in some other embodiments;
  • FIG. 19 is a schematic diagram showing another operating mode of a water source multi-split system for cooling + heat recovery hot water production in some other embodiments;
  • FIG20 is a schematic diagram showing the operating principle of a water source multi-split system for heating + heat recovery for hot water production in some other embodiments;
  • FIG21 is a schematic diagram showing the operating principle of a water source multi-split system for heating + heat recovery cooling water in some other embodiments;
  • FIG. 22 shows a schematic diagram showing another operating mode of a water source multi-split system for heating + heat recovery chilled water in some other embodiments.
  • first and second are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
  • a feature defined as “first” or “second” may explicitly or implicitly include one or more of the features.
  • plural means two or more.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium.
  • coupled indicates, for example, that two or more components are in direct physical or electrical contact.
  • coupled or “communicatively coupled” may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other.
  • a and/or B includes the following three combinations: A only, B only, and a combination of A and B.
  • the air conditioner of the present application 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.
  • Low-temperature and low-pressure refrigerant enters the compressor, which compresses it into high-temperature and high-pressure refrigerant gas and discharges the compressed refrigerant gas.
  • 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 surrounding environment through the condensation process.
  • the expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant.
  • the evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature and low-pressure refrigerant gas to the compressor.
  • the evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled.
  • the air conditioner can adjust the temperature of the indoor space.
  • 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
  • an expansion valve may be provided in the indoor unit or the outdoor unit.
  • the indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator.
  • the air conditioner functions as a heater in a heating mode
  • the indoor heat exchanger functions as an evaporator
  • the air conditioner functions as a cooler in a cooling mode.
  • the water source multi-split system (water source machine) combines water source heat pump technology with air source multi-split system.
  • the cold and hot source side is the same as the water source heat pump system, using water as the energy transport medium, and the indoor side is the same as the multi-split system, using refrigerant as the energy transport medium.
  • the cold and hot sources of the water source multi-split system are usually groundwater, surface water, etc.
  • FIG. 1 shows a schematic diagram of the structure of an outdoor unit of a multifunctional water source multi-split system in the related art
  • FIG. 2 shows a schematic diagram of the structure of a multifunctional water source multi-split system in the related art.
  • the water source machine in the related art whose outdoor unit is shown in FIG1, is usually only provided with an outdoor plate heat exchanger 1A, which is used as a water source side heat exchanger.
  • One of the flow channels of the outdoor plate heat exchanger 1A is a refrigerant flow channel, and the other flow channel is a water flow channel.
  • the heat exchange between the refrigerant and water is realized in the outdoor plate heat exchanger 1A, thereby realizing the air conditioning cooling/heating function.
  • the arrow direction in FIG1 is the water flow direction. Referring to FIG2, if the water source machine in the related art is to realize other functions, such as producing cold water/hot water, a set of indoor units 2A must be arranged separately.
  • the indoor unit is provided with an indoor plate heat exchanger 3A, which is configured to exchange heat with the refrigerant to produce cold water/hot water, and output cold water/hot water to the user, as shown in FIG1. That is, if the indoor unit 2A of the water source machine in the related art is to produce cold water/hot water, it must be turned on, and the user side must be equipped with an indoor unit 2A.
  • the use limitation is high, and it cannot be applied to the disclosure that does not include the indoor unit.
  • the cost is high, and it cannot realize heat recovery to produce hot water.
  • the present application provides an outdoor unit and a water source multi-split system, which can solve the above problems existing in the related technology.
  • the specific structure and working principle of the outdoor unit and the water source multi-split system of the present application are described in detail with specific embodiments.
  • FIG3 shows a schematic diagram of the structure of an outdoor unit of a water source multi-split system in some embodiments.
  • the outdoor unit 1 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 sequence to form a loop.
  • the compressor 10 is provided with a compressor air outlet 11 (also called an exhaust port) and a compressor air inlet 12 (also called an air intake port).
  • the first plate heat exchanger 80 includes a first refrigerant flow channel 81 and a first water flow channel 82 .
  • the first refrigerant flow channel 81 is for the refrigerant to flow through, and the first water flow channel 82 is 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.
  • One of the second water flow channel 92 and the first water flow channel 82 is configured to connect to the water system terminal device 2, such as a water tank, a floor heating water pipe, etc., and the other is configured to connect to a water source.
  • the first plate heat exchanger 80 is connected to the user side, that is, the first water flow channel 82 is connected to the water system terminal device 2, and the first water flow channel 82 is connected to the water system terminal device 2.
  • the water outlet end of the channel 82 is connected to the water inlet end of the water system terminal device 2
  • the water inlet end of the first water flow channel 82 is connected to the water outlet end of the water system terminal device 2
  • the water inlet end of the second water flow channel 92 is connected to the water outlet end of the water source.
  • the first port 21 of the first four-way valve is connected to a third gas-side stop valve 50
  • the second port 22 of the first four-way valve is connected to the compressor outlet 11
  • the third port 23 of the first four-way valve is connected to the compressor inlet 12
  • the fourth port 24 of the first four-way valve is connected to one end of the second refrigerant flow channel 91
  • the other end of the second refrigerant flow channel 91 is connected to a liquid-side stop valve 60 through the second expansion valve 70.
  • the second port 32 of the second four-way valve is connected to the compressor outlet 11
  • the third port 33 of the second four-way valve is connected to the compressor inlet 12
  • the fourth port 34 of the second four-way valve is connected to one end of the first refrigerant flow channel 81
  • the other end of the first refrigerant flow channel 81 is also connected to the above-mentioned liquid side stop valve 60 through the first expansion valve 40.
  • the first plate heat exchanger 80 and the second plate heat exchanger 90, the first four-way valve 20 and the second four-way valve 30, the third gas side stop valve 50 and the liquid side stop valve 60 in the outdoor unit 1 it is possible to achieve independent hot water production and independent cooling water when the outdoor unit 1 is running alone, without the need to run the indoor unit or configure the indoor unit, thereby reducing the cost of independent production of cold water/hot water; when the indoor unit is running, air conditioning refrigeration and heating recovery to make hot water can also be achieved, further enriching the functions of the multi-functional water source multi-split system, reducing system energy consumption, and improving ease of use.
  • a first water pump 100 is provided on the first water flow channel 82 to provide driving force for the water flow in the first water flow channel 82; a second water pump 110 is provided on the second water flow channel 92 to provide driving force for the water flow in the second water flow channel 92.
  • the first water pump 100 is provided on the water inlet end of the first water flow channel 82, and the second water pump 110 is provided on the water inlet end of the second water flow channel 92.
  • 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 provided on the first pipeline 120, that is, a section of the first capillary tube 130 is connected to the first pipeline 120, so that when the indoor unit is not included and the third gas-side stop valve 50 and the liquid-side stop valve 60 are closed, the refrigerant in the first four-way valve 20 can always be in a flowing state, preventing the first four-way valve 20 from having a liquid hammer phenomenon when the first four-way valve 20 is switched, thereby protecting the first four-way valve 20; the first port 31 of the second four-way valve can be closed, or as shown in FIG.
  • the first port 31 of the second four-way valve is connected to the third port 33 of the second four-way valve through a second pipeline 140, and a second capillary tube 150 is provided on the second pipeline 140, that is, a section of the second capillary tube 150 is connected to the second pipeline 140, so that the refrigerant in the second four-way valve 30 is always in a flowing state, preventing the second four-way valve 30 from having a liquid hammer phenomenon when the second four-way valve 30 is switched, thereby protecting the second four-way valve 30.
  • the compressor outlet 11 is connected to a third pipeline 160
  • the third pipeline 160 is respectively connected to the first four-way valve second port 22 and the second four-way valve second port 32 through a three-way piece, 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 outlet 11 .
  • FIG4 shows a schematic diagram of the structure of a water source multi-split system in some embodiments.
  • a multifunctional water source multi-split system is further provided, including a water system terminal device 2, which may be a water tank, a floor heating water pipe, etc., and also including the outdoor unit 1 described in some embodiments, the water system terminal device 2 is connected to one of the first water flow channel 82 and the 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.
  • the first plate heat exchanger 80 is connected to the user side, that is, the first water flow channel 82 is connected to the water system terminal device 2, the water outlet end of the first water flow channel 82 is connected to the water inlet end of the water system terminal device 2, the water inlet end of the first water flow channel 82 is connected to the water outlet end of the water system terminal device 2, and the water inlet end of the second water flow channel 92 is connected to the water outlet end of the water source.
  • the multifunctional water source multi-split system includes the following working modes: separate hot water production mode and separate cooling water mode.
  • FIG5 shows a schematic diagram of the operating principle of the system when the water source multi-split system of some embodiments produces hot water alone.
  • the water source multi-split system does not include an indoor unit, and the specific operation of the single hot water production mode is as follows: the third gas side stop valve 50 and the liquid side stop valve 60 are both closed. Although there is refrigerant in the pipeline where they are located, the refrigerant does not flow.
  • the first expansion valve 40 is fully open, and the second expansion valve 70 is throttled.
  • the first plate heat exchanger 80 acts as a condenser, and the second plate heat exchanger 90 acts as an evaporator; the third port 23 of the first four-way valve is connected to the fourth port 24 of the first four-way valve, the first port 21 of the first four-way valve is connected to the second port 22 of the first four-way valve, the second port 32 of the second four-way valve is connected to the fourth port 34 of the second four-way valve, and the The first port 31 of the four-way valve is connected to the third port 33 of the second four-way valve.
  • the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 and flows through the second four-way valve 30 and the first plate heat exchanger 80 in sequence to become a high-pressure and medium-temperature liquid refrigerant. Then, it passes through the first expansion valve 40, the second expansion valve 70 and the second plate heat exchanger 90 to become a low-pressure and low-temperature gaseous refrigerant. Finally, it flows through the first four-way valve 20 and flows back to the compressor 10 through the compressor inlet 12.
  • FIG6 shows a schematic diagram of the operating principle of the water source multi-split system when the water is cooled alone in some embodiments.
  • the water source multi-split system does not include the indoor unit, and the single cooling water mode specifically operates as follows: the third gas side stop valve 50 and the liquid side stop valve 60 are both closed, and even if there is refrigerant in the pipeline where they are located, the refrigerant does not flow, the first expansion valve 40 is throttled, the second expansion valve 70 is fully opened, the first plate heat exchanger 80 acts as an evaporator, and the second plate heat exchanger 90 acts as a condenser; the second port 22 of the first four-way valve and the fourth port 26 of the first four-way valve are connected.
  • the first port 24 of the first four-way valve is connected, the first port 21 of the first four-way valve is connected to the third port 23 of the first four-way valve, the third port 33 of the second four-way valve is connected to the fourth port 34 of the second four-way valve, the first port 31 of the second four-way valve is connected to the second port 32 of the second four-way valve, and the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 and flows 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 in sequence, and then flows back to the compressor 10 through the compressor inlet 12.
  • the outdoor unit and the water source multi-split system can realize the functions of independent cooling water and independent hot water production.
  • the first water flow channel 82 is still connected to the water system terminal device 2, and the second water flow channel 92 is still connected to the water source.
  • FIG 7 shows a structural schematic diagram of a water source multi-split system in some other embodiments.
  • the multifunctional water source multi-split system also 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 the third gas side stop valve 50 of the outdoor unit 1, and the other port of the indoor heat exchanger 3-1 is connected to the liquid side stop valve 60 of the outdoor unit 1 through a throttling device 3-2 (specifically also an electronic expansion valve).
  • a throttling device 3-2 specifically also an electronic expansion valve
  • FIG8 shows a schematic diagram of the operating principle of the water source multi-split system of other embodiments when hot water is produced independently. As shown in FIG8 , the indoor unit 3 is not started, the third gas-side stop valve 50 and the liquid-side stop valve 60 can be kept open.
  • the refrigerant does not flow in the indoor heat exchanger 3-1 or flows very slowly; the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 acts as a condenser, and the second plate heat exchanger 90 acts as an evaporator; the third port 23 of the first four-way valve is connected to the fourth port 24 of the first four-way valve, and the first port 21 of the first four-way valve is connected to the fourth port 24 of the first four-way valve.
  • the second port 22 of a four-way valve is connected, the second port 32 of the second four-way valve is connected to the fourth port 34 of the second four-way valve, the first port 31 of the second four-way valve is connected to the third port 33 of the second four-way valve, and the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 and flows through the second four-way valve 30 and the first plate heat exchanger 80 in sequence to become a high-pressure and medium-temperature liquid refrigerant, and then is throttled by the first expansion valve 40 and the second expansion valve 70 and flows through the second plate heat exchanger 90 to become a low-pressure and low-temperature gaseous refrigerant, and finally flows through the first four-way valve 20 and flows back to the compressor 10 through the compressor inlet 12.
  • FIG9 shows a schematic diagram of the operating principle of the water-source multi-split system in other embodiments when the water is cooled alone.
  • the indoor unit 3 is not started, and the third gas-side stop valve 50 and the liquid-side stop valve 60 can remain open. Since the indoor unit 3 is not started, the refrigerant does not flow in the indoor heat exchanger 3-1 or flows very slowly.
  • the specific operation of the single cooling water mode is 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 second port 22 of the first four-way valve and the first four-way valve are connected.
  • the fourth port 24 of the four-way valve is connected, the first port 21 of the first four-way valve and the third port 23 of the first four-way valve are connected, the third port 33 of the second four-way valve and the fourth port 34 of the second four-way valve are connected, the first port 31 of the second four-way valve and the second port 32 of the second four-way valve are connected, and the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 and flows 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 in sequence, and then flows back to the compressor 10 through the air inlet of the compressor 10.
  • the water source multi-split system can also realize the function of cooling, heating, recycling and making hot water.
  • Figure 10 shows a schematic diagram of the operating principle of the water source multi-split system of other embodiments when cooling, heating, recycling and making hot water.
  • the specific operation of the cooling + hot water making mode is as follows: the indoor unit 3 is in cooling operation, the throttling device 3-2 is in the throttling state, the third 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, the first plate heat exchanger 80 and the second plate heat exchanger 90 are both used as condensers; the second port 22 of the first four-way valve is connected to the fourth port 24 of the first four-way valve, the first port 21 of the first four-way valve is connected to the third port 23 of the first four-way valve, and the second four-way valve is connected to the third port 24 of the first four-way valve.
  • the second port 32 is connected to the fourth port 34 of the second four-way valve, and the first port 31 of the second four-way valve is connected to the third port 33 of the second four-way valve.
  • the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 and is 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 the second plate heat exchanger 90, the second expansion valve 70, the liquid side stop valve 60, and the throttling device 3-2 of the indoor unit 3 to enter the indoor heat exchanger 3-1, and then flows back to the compressor 10 through the third gas side stop valve 50 and the first four-way valve 20; at the same time, 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, and the throttling device 3-2 of the indoor unit 3 to enter the indoor heat exchanger 3-1, and then flows back to the compressor 10 through the third gas side stop valve 50 and the first four-way valve 20.
  • the outdoor unit and the water source multi-split system can realize independent cooling water, independent hot water making function and cooling, heating and recycling hot water making function.
  • FIG 11 shows a schematic diagram of the structure of the outdoor unit of the water source multi-split system according to some other embodiments.
  • the outdoor unit 1 includes a compressor 10, a first plate heat exchanger 80, a second plate heat exchanger 90, a first four-way valve 20, a second four-way valve 30, and a third four-way valve 170, which are connected in the order of refrigerant flow to form a loop.
  • the compressor 10 is provided with a compressor air outlet 11 (also called an exhaust port) and a compressor air inlet 12 (also called an air intake port).
  • the first plate heat exchanger 80 includes a first refrigerant flow channel 81 and a first water flow channel 82 .
  • the first refrigerant flow channel 81 is for the refrigerant to flow through, and the first water flow channel 82 is 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 the refrigerant to flow through, and the second water flow channel 92 is used for water to flow through; one of the second water flow channel 92 and the first water flow channel 82 is used to connect to the water system terminal equipment 2, such as a water tank, a floor heating water pipe, etc., and the other is configured to connect to a water source.
  • the first plate heat exchanger 80 is connected to the user side, that is, the first water flow channel 82 is connected to the water system terminal equipment 2, the water outlet end of the first water flow channel 82 is connected to the water inlet end of the water system terminal equipment 2, the water inlet end of the first water flow channel 82 is connected to the water outlet end of the water system terminal equipment 2, and the water inlet end of the second water flow channel 92 is connected to the water outlet end of the water source.
  • the first port 21 of the first four-way valve is connected to a first gas-side stop valve 51
  • the second port 22 of the first four-way valve is connected to the compressor outlet 11
  • the third port 23 of the first four-way valve is connected to the compressor inlet 12 and to the second gas-side stop valve 52 .
  • the second port 32 of the second four-way valve is connected to the compressor outlet 11
  • the third port 33 of the second four-way valve is connected to the compressor inlet 12 and connected to the second gas side stop valve 52
  • the fourth port 34 of the second four-way valve is connected to one end of the second refrigerant flow channel 91
  • the other end of the second refrigerant flow channel 91 is also connected to the above-mentioned liquid side stop valve 60 through the second expansion valve 70.
  • the second port 172 of the third four-way valve is connected to the compressor outlet 11
  • the third port 173 of the third four-way valve is connected to the compressor inlet and connected to the second gas side stop valve 52
  • the fourth port 174 of the third four-way valve is connected to one end of the first refrigerant flow channel 81
  • the other end of the first refrigerant flow channel 81 is connected to the liquid side stop valve 60 through the first expansion valve 40.
  • first plate heat exchanger 80 and the second plate heat exchanger 90 By arranging the first plate heat exchanger 80 and the second plate heat exchanger 90, the first four-way valve 20, the second four-way valve 30 and the third four-way valve 170, the first gas side stop valve 51 and the second gas side stop valve 52 and the liquid side stop valve 60 in the outdoor unit 1, it is possible to achieve independent hot water production and independent cooling water when the outdoor unit 1 is running alone, without the need to run the indoor unit or configure the indoor unit, thereby reducing the cost of independent production of hot and cold water; when the indoor unit is running, air conditioning cooling + heat recovery hot water production, air conditioning heating + heat recovery hot water production, air conditioning heating + heat recovery cooling water can also be achieved, further enriching the functions of the multi-functional water source machine, reducing system energy consumption, and improving ease of use.
  • a first water pump 100 is provided on the first water flow channel 82 to provide a driving force for the water flow in the first water flow channel 82; a second water pump 110 is provided on the second water flow channel 92 to provide a driving force for the water flow in the second water flow channel 92.
  • the first water pump 100 is provided on the water inlet end of the first water flow channel 82, and the second water pump 110 is provided on the water inlet end of the second water flow channel 92.
  • the fourth port 24 of the first four-way valve can be closed, or as shown in FIG. 2 , in this embodiment, a first pipeline 120 is connected between the fourth port 24 of the first four-way valve and the third port 23 of the first four-way valve, and a first capillary tube 130 is provided on the first pipeline 120, that is, a section of the first capillary tube 130 is connected to the first pipeline 120, so that when the indoor unit is not included or the indoor unit is not started, or when the third gas side stop valve 50 and the liquid side stop valve 60 are closed, the refrigerant in the first four-way valve 20 can also be in a flowing state all the time, so as to prevent the liquid hammer phenomenon from occurring at the moment of the first four-way valve 20 reversing, thereby protecting the first four-way valve 20.
  • a four-way valve 20 is provided on the first pipeline 120, that is, a section of the first capillary tube 130 is connected to the first pipeline 120, so that when the indoor unit is not included or the indoor unit is not started,
  • the first port 31 of the second four-way valve can be closed, or as shown in FIG. 11 , the first port 31 of the second four-way valve is connected to the third port 33 of the second four-way valve via a second pipeline 140, and a second capillary tube 150 is provided on the second pipeline 140, that is, a section of the second capillary tube 150 is connected to the second pipeline 140, so that the refrigerant in the second four-way valve 30 is always in a flowing state, preventing liquid hammer from occurring at the moment of switching of the second four-way valve 30, thereby protecting the second four-way valve 30.
  • the first port 171 of the third four-way valve can be closed, or as shown in FIG. 12 , a fifth pipeline 180 is connected between the first port 171 of the third four-way valve and the third port 173 of the third four-way valve, and a third capillary tube 190 is provided on the fifth pipeline 180, so that the refrigerant in the third four-way valve 170 is always in a flowing state, preventing liquid hammer from occurring at the moment of switching of the third four-way valve 170, thereby protecting the third four-way valve 170.
  • the compressor outlet 11 is connected to a fourth pipeline 161 , and the first four-way valve second port 22 , the second four-way valve second port 32 and the third four-way valve second port 172 are connected in parallel to the fourth pipeline 161 , thereby simultaneously connecting the compressor outlet 11 .
  • the compressor air inlet 12 is connected to the sixth pipeline 200 , and the first four-way valve third port 23 , the second four-way valve third port 33 and the third four-way valve third port 173 are connected in parallel to the sixth pipeline 200 .
  • Figure 12 shows a structural schematic diagram of a water source multi-split system in some other embodiments.
  • some embodiments further provide a multifunctional water source machine, including a water system terminal device 2, which may be a water tank, a floor heating water pipe, etc., and also includes the outdoor unit 1 described in this embodiment, the water system terminal device 2 is connected to one of the first water flow channel 82 and the 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.
  • a water system terminal device 2 which may be a water tank, a floor heating water pipe, etc.
  • the outdoor unit 1 described in this embodiment
  • the water system terminal device 2 is connected to one of the first water flow channel 82 and the second water flow channel 92 of the outdoor unit 1
  • the other of the first water flow channel 82 and the second water flow channel 92 is connected to a water source.
  • the first plate heat exchanger 80 is connected to the user side, that is, the first water flow channel 82 is connected to the water system terminal device 2, the water outlet end of the first water flow channel 82 is connected to the water inlet end of the water system terminal device 2, the water inlet end of the first water flow channel 82 is connected to the water outlet end of the water system terminal device 2, and the water inlet end of the second water flow channel 92 is connected to the water outlet end of the water source.
  • FIG13 shows a schematic diagram of the operating principle of the water source multi-split system when hot water is produced independently in some other embodiments.
  • the water source multi-split system does not include the indoor unit, and the independent hot water production mode specifically operates as follows: the first gas side stop valve 51, the second gas side stop valve 52 and the liquid side stop valve 60 are all closed. Although there is refrigerant in the pipeline where they are located, the refrigerant does not flow.
  • the first expansion valve 40 is fully opened, and the second expansion valve 70 is throttled.
  • the first plate heat exchanger 80 acts as a condenser, and the second plate heat exchanger 90 acts as an evaporator.
  • the first port 21 of the first four-way valve is connected to the third port 23 of the first four-way valve
  • the second port 22 of the first four-way valve is connected to the third port 23 of the first four-way valve.
  • the fourth port 24 of the four-way valve is connected, the first port 31 of the second four-way valve and the second port 32 of the second four-way valve are connected, the third port 33 of the second four-way valve and the fourth port 34 of the second four-way valve are connected, the second port 172 of the third four-way valve and the fourth port 174 of the third four-way valve are connected, the first port 171 of the third four-way valve and the third port 173 of the third four-way valve are connected, and the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 and flows through the third four-way valve 170, the first plate heat exchanger 80, the first expansion valve 40, the second expansion valve 70, the second plate heat exchanger 90, and the second four-way valve 30, and then flows back to the
  • FIG14 shows a schematic diagram of the operating principle of the water source multi-split system when the water is cooled alone in some other embodiments.
  • the water source multi-split system does not include the indoor unit, and the single cooling water mode specifically operates as follows: the first gas side stop valve 51, the second gas side stop valve 52 and the liquid side stop valve 60 are all closed, and even if there is refrigerant in the pipeline where they are located, the refrigerant does not flow, the first expansion valve 40 is throttled, and the second expansion valve 70 is fully opened, the first plate heat exchanger 80 acts as an evaporator, and the second plate heat exchanger 90 acts as a condenser; the first port 21 of the first four-way valve is connected to the third port 23 of the first four-way valve, and the second port 22 of the first four-way valve is connected to the third port 23 of the first four-way valve.
  • the fourth port 24 of the valve is connected, the first port 31 of the second four-way valve is connected to the third port 33 of the second four-way valve, the second port 32 of the second four-way valve is connected to the fourth port 34 of the second four-way valve, the first port 171 of the third four-way valve is connected to the second port 172 of the third four-way valve, the third port 173 of the third four-way valve is connected to the fourth port 174 of the third four-way valve, and the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 and flows through the second four-way valve 30, the second plate heat exchanger 90, the second expansion valve 70, the first expansion valve 40, the first plate heat exchanger 80, and the third four-way valve 170, and then flows back to the compressor 10 through the compressor inlet 12.
  • the outdoor unit and the water source multi-split system can realize the functions of independent cooling water and independent hot water making.
  • FIG15 shows a schematic diagram of the structure of a water source multi-split system in some other embodiments.
  • the multifunctional water source machine in this embodiment also includes an indoor unit 3.
  • One port of the indoor heat exchanger 3-1 is connected to the first gas side stop valve 51 of the outdoor unit 1, and the other port of the indoor heat exchanger 3-1 is connected to the liquid side stop valve 60 of the outdoor unit 1 through a throttling device 3-2 (specifically also an expansion valve).
  • FIG16 shows a schematic diagram of the operating principle of the water source multi-split system of some other embodiments when heating water alone.
  • the indoor unit 3 is not started, the first gas side stop valve 51 and the liquid side stop valve 60 can remain open, and the second gas side stop valve 52 is closed. Since the indoor unit 3 is not started, the refrigerant does not flow in the indoor heat exchanger 3-1 or flows very slowly.
  • the specific operation of the single hot water making mode is as follows: the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 acts as a condenser, and the second plate heat exchanger 90 acts as an evaporator; the first port 21 of the first four-way valve is connected to the third port 23 of the first four-way valve, and the second port 23 of the first four-way valve is connected.
  • the 22 is connected to the fourth port 24 of the first four-way valve
  • the first port 31 of the second four-way valve is connected to the second port 32 of the second four-way valve
  • the third port 33 of the second four-way valve is connected to the fourth port 34 of the second four-way valve
  • the second port 172 of the third four-way valve is connected to the fourth port 174 of the third four-way valve
  • the first port 171 of the third four-way valve is connected to the third port 173 of the third four-way valve
  • the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 and flows through the third four-way valve 170, the first plate heat exchanger 80, the first expansion valve 40, the second expansion valve 70, the second plate heat exchanger 90, and the second four-way valve 30, and then flows back to the compressor 10 through the compressor inlet 12.
  • FIG17 shows a schematic diagram of the operating principle of the system when the water source multi-split system of other embodiments is used for cooling water alone.
  • the indoor unit 3 is not started, the first gas side stop valve 51 and the liquid side stop valve 60 can remain open, and the second gas side stop valve 52 is closed.
  • the specific operation of the single cooling water mode is 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 port 21 of the first four-way valve is connected to the third port 23 of the first four-way valve, and the second port 23 of the first four-way valve is connected to the third port 23 of the first four-way valve.
  • the 22 is connected to the fourth port 24 of the first four-way valve
  • the first port 31 of the second four-way valve is connected to the third port 33 of the second four-way valve
  • the second port 32 of the second four-way valve is connected to the fourth port 34 of the second four-way valve
  • the first port 171 of the third four-way valve is connected to the second port 172 of the third four-way valve
  • the third port 173 of the third four-way valve is connected to the fourth port 174 of the third four-way valve
  • the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 and flows through the second four-way valve 30, the second plate heat exchanger 90, the second expansion valve 70, the first expansion valve 40, the first plate heat exchanger 80, and the third four-way valve 170, and then flows back to the compressor 10 through the compressor inlet 12.
  • the water source multi-split system in this embodiment can also realize the functions of cooling + heat recovery hot water making, heating + heat recovery hot water making, and heating + heat recovery cooling water, that is, it also includes the working modes of cooling + heat recovery hot water making mode, heating + heat recovery hot water making mode, and heating + heat recovery cooling water mode.
  • FIG18 shows a schematic diagram of the operating principle of the water source multi-split system of other embodiments when cooling + heat recovery is used to make hot water.
  • the indoor heat load is small and the user side water consumption is large
  • the specific operation of the cooling + hot water making mode is as follows: the indoor unit 3 is in cooling operation, the first gas side stop valve 51 and the liquid side stop valve 60 are opened, the second gas side stop valve 52 is closed, the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 acts as a condenser, and the second plate heat exchanger 90 acts as an evaporator; the first port 21 of the first four-way valve is connected to the third port 23 of the first four-way valve, the second port 22 of the first four-way valve is connected to the fourth port 24 of the first four-way valve, the first port 31 of the second four-way valve is connected to the second port 32 of the second four-way valve, the third port 33 of the second four-way valve and
  • the third four-way valve second port 172 is connected to the third four-way valve fourth port 174, the third four-way valve first port 171 is connected to the third four-way valve third port 173, and the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11, passes through the third four-way valve 170, the first plate heat exchanger 80, the first expansion valve 40, the second expansion valve 70, the second plate heat exchanger 90, and the second four-way valve 30, and then flows back to the compressor 10 through the compressor inlet 12; at the same time, the refrigerant after flowing through the first expansion valve 40 also enters the indoor heat exchanger 3-1 through the liquid side stop valve 60 and the throttling device 3-2, and then flows back to the compressor 10 through the first gas side stop valve 51 and the first four-way valve 20.
  • FIG19 shows a schematic diagram of another operating mode of the water source multi-split system cooling + heat recovery hot water making in some other embodiments.
  • the indoor heat load is equivalent to the user side water consumption
  • the cooling + hot water making mode specifically operates as follows: the indoor unit 3 is in cooling operation, the first gas side stop valve 51 and the liquid side stop valve 60 are opened, the second gas side stop valve 52 is closed, the first expansion valve 40 is fully opened, and the second expansion valve 70 is closed, the first port 21 of the first four-way valve is connected to the third port 23 of the first four-way valve, the second port 22 of the first four-way valve is connected to the fourth port 24 of the first four-way valve, and the second port 23 of the first four-way valve is connected to the fourth port 24 of the first four-way valve.
  • the first port 31 of the four-way valve is connected to the third port 33 of the second four-way valve
  • the second port 32 of the second four-way valve is connected to the fourth port 34 of the second four-way valve
  • the second port 172 of the third four-way valve is connected to the fourth port 174 of the third four-way valve
  • the first port 171 of the third four-way valve is connected to the third port 173 of the third four-way valve
  • the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 through the third four-way valve 170, the first plate heat exchanger 80, the first expansion valve 40, the liquid side stop valve 60, and the throttling device 3-2 to enter the indoor heat exchanger 3-1, and then flows back to the compressor 10 through the first gas side stop valve 51 and the first four-way valve 20.
  • FIG20 shows a schematic diagram of the operating principle of the water source multi-split system in other embodiments when heating + heating water.
  • the specific operation of heating + heating water is as follows: the indoor unit 3 is in heating operation, the throttling device 3-2 is fully opened, the first gas side stop valve 51 and the liquid side stop valve 60 are opened, the second gas side stop valve 52 is closed, the first expansion valve 40 is fully opened, the second expansion valve 70 is throttled, the first plate heat exchanger 80 acts as a condenser, and the second plate heat exchanger 90 acts as an evaporator; the first port 21 of the first four-way valve is connected to the second port 22 of the first four-way valve, the third port 23 of the first four-way valve is connected to the fourth port 24 of the first four-way valve, the first port 31 of the second four-way valve is connected to the second port 32 of the second four-way valve, the third port 33 of the second four-way valve is connected to the fourth port 34 of the second four-way valve, and the first port 21 of the
  • FIG21 shows a schematic diagram of the operating principle of the water source multi-split system of some other embodiments when heating + cooling water.
  • the specific operation of heating + cooling water is as follows: the indoor unit 3 is in heating operation, the first gas side stop valve 51 and the liquid side stop valve 60 are opened, the second gas side stop valve 52 is closed, the first expansion valve 40 is throttled, the second expansion valve 70 is throttled, the first plate heat exchanger 80 and the second plate heat exchanger 90 are both used as evaporators; the first port 21 of the first four-way valve is connected to the second port 22 of the first four-way valve, the third port 23 of the first four-way valve is connected to the fourth port 24 of the first four-way valve, the first port 31 of the second four-way valve is connected to the second port 32 of the second four-way valve, the third port 33 of the second four-way valve is connected to the fourth port 34 of the second four-way valve, and the first port 17 of the third four-way valve is connected to the fourth port 17 of the second four
  • the third port 173 of the third four-way valve is connected with the fourth port 174 of the third four-way valve
  • the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 through the first four-way valve 20, the first gas-side stop valve 51, and enters the indoor heat exchanger 3-1, and then flows back to the compressor 10 through the throttling device 3-2, the liquid-side stop valve 60, the first expansion valve 40, the first plate heat exchanger 80, the third four-way valve 170, and the compressor air inlet 12; at the same time, the refrigerant flowing out of the liquid-side stop valve 60 also flows through the second expansion valve 70, the second plate heat exchanger 90, the second four-way valve 30, and then flows back to the compressor 10 through the compressor air inlet 12.
  • FIG22 shows a schematic diagram of another operating mode of the water source multi-split system heating + heat recovery cooling water in some other embodiments.
  • the specific operation of heating + cooling water is as follows: the indoor unit 3 is in heating operation, the first gas side stop valve 51 and the liquid side stop valve 60 are opened, the second gas side stop valve 52 is closed, the first expansion valve 40 is throttled, and the second expansion valve 70 is closed, the first port 21 of the first four-way valve is connected to the second port 22 of the first four-way valve, the third port 23 of the first four-way valve is connected to the fourth port 24 of the first four-way valve, the first port 31 of the second four-way valve is connected to the second port 32 of the second four-way valve, and the third port 33 of the second four-way valve is connected to the fourth port 24 of the first four-way valve.
  • the four ports 34 are connected, the first port 171 of the third four-way valve and the second port 172 of the third four-way valve are connected, the third port 173 of the third four-way valve and the fourth port 174 of the third four-way valve are connected, and the high-temperature and high-pressure gaseous refrigerant is output from the compressor outlet 11 through the first four-way valve 20, the first gas side stop valve 51, and enters the indoor heat exchanger 3-1, and then flows back to the compressor 10 through the throttling device 3-2, the liquid side stop valve 60, the first expansion valve 40, the first plate heat exchanger 80, the third four-way valve 170, and the compressor inlet 12.
  • the outdoor unit and water source multi-split system can realize independent cooling water, independent hot water making function, cooling + heat recovery hot water making, heating + hot water making, heating + cooling water function.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

L'invention concerne une unité extérieure (1) et un système multifonctionnel à divisions multiples de source d'eau. L'unité extérieure (1) comprend un compresseur (10), un premier échangeur de chaleur à plaques (80), un second échangeur de chaleur à plaques (90), une première vanne à quatre voies (20) et une seconde vanne à quatre voies (30). Le premier échangeur de chaleur à plaques (80) comprend un premier canal d'écoulement de fluide frigorigène (81) et un premier canal d'écoulement d'eau (82). Le second échangeur de chaleur à plaques (90) comprend un second canal d'écoulement de fluide frigorigène (91) et un second canal d'écoulement d'eau (92). L'un du second canal d'écoulement d'eau (92) et du premier canal d'écoulement d'eau (82) est conçu pour être relié à un appareil terminal de système d'eau (2) et l'autre est conçu pour être relié à une source d'eau. La première vanne à quatre voies (20) est reliée à une troisième vanne d'arrêt côté air (50), une sortie d'air (11) du compresseur (10), une entrée d'air (12) du compresseur (10) et une extrémité du second canal d'écoulement de fluide frigorigène (91) ; et l'autre extrémité du second canal d'écoulement de fluide frigorigène (91) est reliée à une vanne d'arrêt côté liquide (60). La seconde vanne à quatre voies (30) est reliée à la sortie d'air (11) du compresseur (10), à l'entrée d'air (12) du compresseur (10) et à une extrémité du premier canal d'écoulement de fluide frigorigène (81) ; et l'autre extrémité du premier canal d'écoulement de fluide frigorigène (81) est reliée à la vanne d'arrêt côté liquide (60).
PCT/CN2023/124529 2022-10-13 2023-10-13 Unité extérieure et système multifonctionnel à divisions multiples de source d'eau WO2024078619A1 (fr)

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CN202211253954.4A CN115597130A (zh) 2022-10-13 2022-10-13 室外机及多功能水源机
CN202211254786.0 2022-10-13
CN202211254786.0A CN115597131A (zh) 2022-10-13 2022-10-13 室外机及多功能水源多联机系统
CN202211253954.4 2022-10-13

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CN113007830A (zh) * 2021-04-16 2021-06-22 广东积微科技有限公司 一种三管制多联机系统及其控制方法
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CN114777218A (zh) * 2022-03-28 2022-07-22 广东开利暖通空调股份有限公司 多联机系统及控制方法
CN115597131A (zh) * 2022-10-13 2023-01-13 青岛海信日立空调系统有限公司（Cn） 室外机及多功能水源多联机系统
CN115597130A (zh) * 2022-10-13 2023-01-13 青岛海信日立空调系统有限公司（Cn） 室外机及多功能水源机

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CN105180304A (zh) * 2015-10-20 2015-12-23 青岛海信日立空调系统有限公司 空调室外机、多功能空调系统及其工作方法
WO2019179452A1 (fr) * 2018-03-21 2019-09-26 青岛海信日立空调系统有限公司 Unité extérieure, système à divisions multiples et procédé de commande associé
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