WO2018026137A1 - Heat exchanger alternating-type heat pump system - Google Patents

Heat exchanger alternating-type heat pump system Download PDF

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Publication number
WO2018026137A1
WO2018026137A1 PCT/KR2017/008094 KR2017008094W WO2018026137A1 WO 2018026137 A1 WO2018026137 A1 WO 2018026137A1 KR 2017008094 W KR2017008094 W KR 2017008094W WO 2018026137 A1 WO2018026137 A1 WO 2018026137A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
heat
medium
circulation line
cooling
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Application number
PCT/KR2017/008094
Other languages
French (fr)
Korean (ko)
Inventor
윤명진
Original Assignee
윤명진
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Publication date
Application filed by 윤명진 filed Critical 윤명진
Priority to CN201780048444.4A priority Critical patent/CN109564043A/en
Publication of WO2018026137A1 publication Critical patent/WO2018026137A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • 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
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/002—Compression machines, plants or systems with reversible cycle not otherwise provided for geothermal
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0251—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units being defrosted alternately
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/06—Damage
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2507—Flow-diverting valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine

Definitions

  • the present invention relates to a heat exchanger alternating heat pump system, and more particularly, a heat exchanger alternating heat pump having a new structure capable of operating by connecting different heat sources or different types of loads to a plurality of heat exchangers by a simple configuration. It's about the system.
  • a heat pump is a device (or system) that absorbs or releases heat through a phase change of a refrigerant circulating through a compressor, a condenser, an evaporator, and an expansion valve to supply hot / cold water or heating and cooling.
  • a conventional heat pump is illustrated. Referring to the drawings as follows.
  • the compressor 11, the first heat exchanger 12, the second heat exchanger 13, and the expansion valve 14 which are interconnected by the circulation line 20 to form a circulation cycle of the refrigerant.
  • a switching valve 16 for switching the flow of the refrigerant in accordance with cooling (or cold water) and heating (or hot water) is provided, each of the expansion valve (14, 15) side according to the cooling and heating Check valves 17 and 18 are provided to change the flow of the refrigerant.
  • the first heat exchanger 12 and the second heat exchanger 13 is operated as a condenser or evaporator according to the cooling or heating mode, the expansion valve (14, 15) according to the cooling and heating Separate expansion valves 14 and 15 are expanded to circulate the refrigerant by expanding the refrigerant.
  • Such a heat pump is connected to a load side such as cooling (or cold water) and heating (or hot water) to either the first heat exchanger or the second heat exchanger, and the other is not connected to the load side.
  • a load side such as cooling (or cold water) and heating (or hot water) to either the first heat exchanger or the second heat exchanger, and the other is not connected to the load side.
  • There is no limit to improving heat exchange efficiency as no separate heat sources such as geothermal heat, waste water or outside air are connected at all, and a single heat source can be connected to use different heat sources as needed or optionally. There is a limit to this.
  • the heat pump typically has a drop in the first heat exchanger 12 or the second heat exchanger 13 that is installed outdoors due to the low outdoor temperature during heating (or hot water production) in winter. It is generated, thereby causing a sharp drop in the heating capacity or requires a separate defrosting operation for defrosting, the conventional heat pump shows a significant difference in the operating capacity due to seasonal factors (outdoor temperature), which is the compressor ( The hot gas generated by 11) is guided to the second heat exchanger 13 located on the outdoor side to perform defrosting (normal hot gas defrosting). In this case, a conventional heat pump The problem is that the continuous heating supply is impossible because the heating by the first heat exchanger 12 is temporarily stopped to supply hot gas to the second heat exchanger 13 side.
  • the conventional heat pump is a liquid refrigerant condensed from the second heat exchanger 13 when the compressor 11 is restarted during normal operation as the defrosting operation is performed while the compressor 11 is stopped.
  • the inflow to the compressor 11 there is a risk of damage to the compressor due to the liquid compression there is a risk of failure or damage of the device.
  • the present invention is to solve the problems as described above, the present invention is connected to a plurality of heat exchangers of different types of heat sources or different types of loads of the new structure that can increase the thermal efficiency during normal operation and defrost operation It is to provide a heat exchanger alternating heat pump system.
  • a heat pump system comprising a compressor (31), a condenser, expansion valves (33, 34) and an evaporator interconnected by a circulation line (20) provided to circulate the heat medium;
  • Is connected to the circulation line 20 is provided to be operated as the condenser or evaporator, connected to the load (R, R1, R2) to supply cooling (cold water) or heating (hot water), or includes external air or geothermal or waste heat
  • a first heat exchanger 32 connected to the heat sources S, S1 and S2;
  • first heat exchanger 32 Corresponding to the first heat exchanger 32 is provided so as to operate as the evaporator or condenser, are interconnected to sequentially flow the heat medium on the circulation line 20, the connection state of the first heat exchanger (32) Second and third heat exchangers (35,36) correspondingly connected to the heat sources (S, S1, S2) or loads (R, R1, R2);
  • a heat exchanger switching valve (38) adapted to selectively switch the heat medium on the side of the second heat exchanger (35) or the third heat exchanger (36) to preferentially allow the heat medium to pass therethrough;
  • the expansion valves 33 and 34 may include a first expansion valve 33 positioned between the first heat exchanger 32 and the heat exchanger switching valve 38 so as to be selectively operated in a cooling or heating operation.
  • a heat exchanger alternating heat pump system characterized in that it is provided with a second expansion valve (34) positioned between the second heat exchanger (35) and the third heat exchanger (36).
  • the heat pump system comprising a compressor (31), a condenser, expansion valves (33, 34) and an evaporator interconnected by a circulation line (20) provided to circulate the heat medium;
  • Is connected to the circulation line 20 is provided to be operated as the condenser or evaporator, connected to the load (R, R1, R2) to supply cooling (cold water) or heating (hot water), or includes external air or geothermal or waste heat
  • a first heat exchanger 32 connected to the heat sources S, S1 and S2;
  • first heat exchanger 32 Corresponding to the first heat exchanger 32 is provided so as to operate as the evaporator or condenser, are interconnected to sequentially flow the heat medium on the circulation line 20, the connection state of the first heat exchanger (32) Second and third heat exchangers (35,36) correspondingly connected to the heat sources (S, S1, S2) or loads (R, R1, R2);
  • a heat exchanger switching valve (38) adapted to selectively switch the heat medium on the side of the second heat exchanger (35) or the third heat exchanger (36) to preferentially allow the heat medium to pass therethrough;
  • the first load R1 or the second type may be different.
  • Load R2 is connected;
  • the expansion valves 33 and 34 may include a first expansion valve 33 positioned between the first heat exchanger 32 and the heat exchanger switching valve 38 so as to be selectively operated in a cooling or heating operation.
  • a heat exchanger alternating heat pump system characterized in that it is provided with a second expansion valve (34) positioned between the second heat exchanger (35) and the third heat exchanger (36).
  • the compressor 31 is provided on the circulation line 20 is provided with a cooling and heating switching valve 37 is provided to switch the flow of the heat medium according to the cooling or heating operation
  • a heat exchanger alternating heat pump system is provided.
  • the second heat exchanger 35 and the third heat exchanger 36 in the heat source (S, S1, S2) different from each other such as geothermal heat, wastewater heat or outside air
  • (S1) and the second heat source (S2) so as to be heat exchangeable
  • the present invention is provided by the first expansion valve 33 and the second expansion valve 34 which is selectively operated during the cooling or heating operation, thereby other than the air-conditioning switching valve 37 and the heat exchanger switching valve 38
  • the present invention is provided by the first expansion valve 33 and the second expansion valve 34 which is selectively operated during the cooling or heating operation, thereby other than the air-conditioning switching valve 37 and the heat exchanger switching valve 38
  • the present invention heat exchanger to selectively switch the heat medium to the second heat exchanger 35 or the third heat exchanger (36) in addition to the air-conditioning switching valve 37 for switching the flow of the heat medium according to the cooling or heating operation
  • the switching valve 38 it is very easy to control the selective flow of the heat medium to the second or third heat exchanger 35, 36 by the heat exchanger switching valve 38, as well as the device accordingly. There is an advantage that can provide convenience in the manufacture or maintenance of.
  • FIG. 1 is a configuration diagram showing an example of a conventional heat pump system
  • FIG 3 is another heat exchange flow diagram according to an embodiment of the present invention.
  • FIG. 4 is another heat exchange flow diagram according to an embodiment of the present invention.
  • FIG. 6 is another heat exchange flow diagram according to an embodiment of the present invention.
  • FIG 9 is another heat exchange flowchart according to another embodiment of the present invention.
  • FIG 10 is another heat exchange flowchart according to another embodiment of the present invention.
  • 16 is another heat exchange flow diagram according to another embodiment of the present invention.
  • FIG 17 is another heat exchange flowchart according to another embodiment of the present invention.
  • the present invention corresponds to the first heat exchanger 32 operated as a condenser or evaporator, and is provided with a plurality of other heat exchangers 35 and 36 operated as an evaporator or a condenser.
  • the present invention provides a compressor (31) and a first heat exchanger (32) in which heat exchange is performed according to a phase change of the heat medium by a circulation line (20) extending to circulate the heat medium.
  • Expansion valves (33, 34), the second and third heat exchangers (35, 36) are interconnected, and the compressor (according to the cooling (or cold water) and heating (or hot water) on the circulation line (20) 31 is provided with a cooling and heating switching valve 37 for switching the flow of the heat medium supplied from 31.
  • the first heat exchanger 32 corresponds to a conventional indoor unit in which a cold / hot water line 40 on the load R side is connected to supply air-conditioning (or cold / hot water) to a place of use.
  • the third heat exchanger (35, 36) is to be discharged to the outside of the heat of the heat medium or absorb the external heat corresponding to the conventional outdoor unit, each heat exchanger (32, 35, 36) is evaporator or according to the cooling or heating mode It works as a condenser.
  • the configuration of the second and third heat exchangers (35, 36) is a second heat exchanger to enable the frequent operation depending on the normal operation or defrosting operation for the defrosting operation or the seasonal characteristics or external environment for supplying heating and cooling It consists of a 35 and the third heat exchanger 36, the heat exchanger switching valve 38 is provided on the circulation line 20 to control the flow of the heat medium according to the operating state.
  • the second and third heat exchangers 35 and 36 may be provided to circulate heat sources S1 and S2 such as geothermal heat, waste water heat (waste water), or outside air to enable heat exchange.
  • the first heat source S1 corresponding to any one of the heat sources S1 and S2 is provided to be heat-exchangeable at 35, and the third heat exchanger 36 has a second heat source different from the first heat source S1. S2 is provided so that heat exchange is possible.
  • the heat source (S1, S2) such as geothermal or wastewater heat is connected to a separate heat source supply line 41, but when using the outside air, a separate heat source supply line 41 may not be directly connected.
  • the circulation line 20 is provided with expansion valves (33, 34) for reducing the heat medium passing through each of the heat exchangers (32, 35, 36) acting as a condenser according to the cooling or heating operation
  • the expansion The valves 33 and 34 may be separately provided with a first expansion valve 33 and a second expansion valve 34 which are selectively operated at the time of cooling or heating operation, and are cooled on each of the expansion valves 33 and 34.
  • a check valve 42 or an electronic on / off valve 43 or the like is provided to bypass the heating medium according to the heating operation, and in the case of the second expansion valve 34, a general electronic expansion capable of opening and closing stepwise by a stepper motor is provided.
  • the valve may be provided to enable bidirectional flow of the heating medium.
  • FIG. 2 shows a heating operation by the first heat source side (outside) heat exchanger 35, in which the heat medium supplied from the compressor 31 is loaded by the first heat exchanger 32. Heating or hot water is supplied through heat exchange with the side, and the heat medium passing through the first heat exchanger 32 bypasses the first expansion valve 33 through the check valve 42 to exchange the heat exchanger. It is supplied to the switching valve 38 side.
  • heat exchange is performed sequentially through the second expansion valve 34 and the second heat exchanger 35.
  • the heat medium passing through the second heat exchanger 35 is introduced into the compressor 31 by the heat exchanger switching valve 38, at which time the third heat exchanger 36 stops its operation. It is provided in a state that the heat exchange with the heat medium is not made, it merely serves as a receiver to simply pass the heat medium as it is, the electronic on-off valve 43 of the second expansion valve 34 side is in a closed state.
  • a heat medium in which heat exchange with the load R side is performed in the first heat exchanger 32 is performed in the heat exchanger switching valve.
  • the heat exchange is performed while sequentially passing through the second expansion valve 34 and the third heat exchanger 36, wherein the second As the expansion valve 34 is provided to enable bi-directional flow as described above, the heat medium can flow from the second heat exchanger 35 to the third heat exchanger 36.
  • the heat medium supplied from the compressor 31 flows to the heat exchanger switching valve 38 through the air conditioning switching valve 37, and the heat exchanger.
  • the air switching valve 38 selectively flows the heat medium to the second heat exchanger 35 or the third heat exchanger 36 that operates as a condenser.
  • the heat medium bypasses the second expansion valve 34 as the electronic on / off valve 43 is opened, and then passes through any one of the second heat exchanger 35 and the third heat exchanger 36 as it is.
  • the heat exchanger switching valve 38 heat exchange with the load R side is performed in the first heat exchanger 32 via the first expansion valve 33.
  • FIG. 6 and 7 illustrate a case in which a defrosting operation of either the second heat exchanger 35 or the third heat exchanger 36 is performed during the heating operation.
  • FIG. 6 shows defrosting of the second heat exchanger 35, in which the heat medium supplied from the compressor 31 is loaded by the first heat exchanger 32 as in the heating operation described above. Heating or hot water is supplied through heat exchange with the R) side, and the heat medium passing through the first heat exchanger 32 is supplied to the second heat exchanger 35 by the heat exchanger switching valve 38. At this time, the second heat exchanger 35 is defrosted as the heat medium passes while the fan motor 39 is stopped, and heat exchange is performed in the third heat exchanger 36 operated by the evaporator. Will be done.
  • FIG. 7 illustrates defrosting of the third heat exchanger 36, which is different from the flow of the heat medium according to the above-described defrosting operation by the heat exchanger switching valve 38.
  • the heat exchanger is supplied with a different heat medium, wherein the third heat exchanger 36 is defrosted as the heat medium passes while the fan motor 39 is stopped, and the second heat exchanger is operated as an evaporator. Heat exchange takes place in the unit 35.
  • the device exerts the best heat exchange efficiency and exerts a heating effect. Defrosting of the second or third heat exchangers 35 and 36 is performed.
  • FIGS. 8 and 9 illustrate heating operation by the second heat exchanger 35 and the third heat exchanger 36
  • FIGS. 10 and 11 illustrate the second heat exchanger 35 and the third heat exchanger
  • 3 illustrates the cooling operation by the heat exchanger 36
  • FIGS. 12 and 13 illustrate the defrosting operation by the second heat exchanger 35 and the third heat exchanger 36, and specific operation thereof.
  • the state is the same as that already mentioned in Figs.
  • the load R side is connected to the first heat exchanger 32, and different types of first heat source S1 and second heat source S are respectively connected to the second and third heat exchangers 35 and 36.
  • first heat source S1 and second heat source S are respectively connected to the second and third heat exchangers 35 and 36.
  • the first and second kinds of loads (R1) and other types of the second and third heat exchangers (35, 36) side Two loads R2 may be connected, which will be described below with reference to FIGS. 14 to 18.
  • a heat source supply line 41 is connected to the first heat exchanger 32 to enable heat exchange with the heat source S, and the second and third heat exchangers 35 and 36.
  • the first load R1 and the second load R2 are connected to the second heat exchanger 35 by the cold / hot water line 40 to supply cooling (cold water) or heating (hot water or hot water) to the side. Referring to the cooling operation by the following.
  • the heat medium supplied from the compressor 31 is heat medium to the third heat exchanger 36 side by the heat exchanger switching valve 38 via the check valve 42 via the first heat exchanger 32.
  • the heat medium is maintained in a state of high temperature and high pressure to supply hot water (especially hot water supply) to the second load R2 side by the second heat exchanger 36, after which the heat medium
  • hot water especially hot water supply
  • cooling cold water
  • the present invention is effective in simultaneously supplying cooling and hot water (hot water supply), and even in this case, as described above, the heat medium at the outlet side of the third heat exchanger 36 is in the supercooled state and the second expansion valve 34 ),
  • the process of expanding the heat medium to low temperature and low pressure by the second expansion valve 34 becomes very easy, whereby the super-cooled heat medium is expanded by the second expansion valve 34.
  • the heat medium supplied from the compressor 31 is transferred to the second heat exchanger 35 by the heat exchanger switching valve 38. It is first supplied to the side to supply hot water (hot water) to the first load (R1) side, and then to the cooling (cold water) to the second load (R2) side by the third heat exchanger (36). .
  • frost accumulated in the second heat exchanger 32 when heating or hot water (hot water supply) is supplied by the second and third heat exchangers 35 and 36.
  • the fan motor 39 on the second heat exchanger 32 side is stopped for removal, and each of the switching valves 37 and 38, the expansion valves 33 and 34, the check valve 42 and the electronic shut-off valve ( 43) the operation of the lamp is switched.
  • the high temperature and high pressure heat medium supplied from the compressor 32 is preferentially passed to the second heat exchanger 32 to perform a defrosting operation.
  • the heat medium is able to supply some hot water as it passes through the third heat exchanger 36 in a state where the temperature is somewhat lowered, and the second heat exchanger 35 is operated by a conventional evaporator.

Abstract

The present invention relates to a heat exchanger alternating-type heat pump system having a novel structure and enabling operation by connecting different types of heat sources or different types of loads to the plurality of heat exchangers. According to the present invention, provided is the heat exchanger alternating-type heat pump system having a first heat exchanger (32), and second and third heat exchangers (35, 36) corresponding to the same, wherein when loads (R, R1, R2) are connected to the first heat exchanger (32), a different type of a first heat source (S1) or a second heat source (S2) is connected to the second and third heat exchangers (35, 36) or a different type of a first load (R1) or a second load (R2) is connected to the same.

Description

열교환기 교번타입 히트펌프시스템Heat Exchanger Alternating Heat Pump System
본 발명은 열교환기 교번타입 히트펌프시스템에 관한 것으로, 보다 상세하게는 간단한 구성에 의해 다수의 열교환기에 다른 종류의 열원이나 다른 종류의 부하를 연결하여 운전이 가능한 새로운 구조의 열교환기 교번타입 히트펌프시스템에 관한 것이다.The present invention relates to a heat exchanger alternating heat pump system, and more particularly, a heat exchanger alternating heat pump having a new structure capable of operating by connecting different heat sources or different types of loads to a plurality of heat exchangers by a simple configuration. It's about the system.
일반적으로 히트펌프는 압축기, 응축기, 증발기 그리고 팽창밸브를 순환하는 냉매의 상변화를 통해 열을 흡수 또는 방출하여 냉온수 또는 냉난방을 공급하도록 된 장치(또는 시스템)로, 이러한 종래의 히트펌프 일례를 도시된 도면에 의해 설명하면 다음과 같다.In general, a heat pump is a device (or system) that absorbs or releases heat through a phase change of a refrigerant circulating through a compressor, a condenser, an evaporator, and an expansion valve to supply hot / cold water or heating and cooling. An example of such a conventional heat pump is illustrated. Referring to the drawings as follows.
도 1에 도시된 바와 같이, 냉매의 순환사이클을 형성하도록 순환라인(20)에 의해 상호 연결되는 압축기(11), 제1 열교환기(12), 제2 열교환기(13) 및 팽창밸브(14,15)가 구비되고, 냉방(또는 냉수)과 난방(또는 온수)에 따라 냉매의 흐름을 절환할 수 있는 절환밸브(16)가 구비되며, 상기 각 팽창밸브(14,15) 측에는 냉난방에 따른 냉매의 흐름이 변경하도록 체크밸브(17,18)가 구비되어 있다. As shown in FIG. 1, the compressor 11, the first heat exchanger 12, the second heat exchanger 13, and the expansion valve 14 which are interconnected by the circulation line 20 to form a circulation cycle of the refrigerant. 15 is provided, a switching valve 16 for switching the flow of the refrigerant in accordance with cooling (or cold water) and heating (or hot water) is provided, each of the expansion valve (14, 15) side according to the cooling and heating Check valves 17 and 18 are provided to change the flow of the refrigerant.
이러한 구성에 있어서, 상기 제1 열교환기(12)와 제2 열교환기(13)는 냉방 또는 난방모드에 따라 응축기 또는 증발기로 작동하게 되고, 상기 팽창밸브(14,15)는 냉방과 난방에 따라 별도의 팽창밸브(14,15)에 의해 냉매를 팽창하여 순환이 이루어지도록 결합되어 있다.In this configuration, the first heat exchanger 12 and the second heat exchanger 13 is operated as a condenser or evaporator according to the cooling or heating mode, the expansion valve (14, 15) according to the cooling and heating Separate expansion valves 14 and 15 are expanded to circulate the refrigerant by expanding the refrigerant.
이와 같은 히트펌프는 상기 제1 열교환기 또는 제2 열교환기 중의 어느 하나에 냉방(또는 냉수)과 난방(또는 온수) 등과 같은 부하측과의 라인이 연결되는데, 종래에는 상기 부하측에 연결되지 않은 다른 하나에 지열이나 폐온수 또는 외기 등과 같은 별도의 열원이 전혀 연결되지 않음에 따라 열교환 효율을 개선하는 데에 한계가 있을 뿐만 아니라 단일의 열원이 연결되어 필요에 따라 또는 선택적으로 서로 다른 열원을 사용하는 데에 한계가 있는 것이다.Such a heat pump is connected to a load side such as cooling (or cold water) and heating (or hot water) to either the first heat exchanger or the second heat exchanger, and the other is not connected to the load side. There is no limit to improving heat exchange efficiency as no separate heat sources such as geothermal heat, waste water or outside air are connected at all, and a single heat source can be connected to use different heat sources as needed or optionally. There is a limit to this.
또한 통상적으로 히트펌프는 겨울철의 난방시(또는 온수 생산시)에 실외온도가 낮음에 따라 실외에 설치되는 상기 제1 열교환기(12) 또는 제2 열교환기(13)에 적상(積霜)이 발생되고, 이에 의해 난방능력이 급격히 저하되거나 또는 제상하기 위한 별도의 제상운전을 요하게 되는데, 종래의 히트펌프는 계절적 요인(실외의 온도)에 의한 작동능력이 현저한 차이를 나타내는 것으로, 이는 상기 압축기(11)에 의해 생성된 고온 고압의 가스(hot gas)를 실외측에 위치된 상기 제2 열교환기(13) 측으로 유도하여 제상(통상의 핫가스제상)을 행하게 되는데, 이러한 경우에 종래의 히트펌프는 핫가스를 제2 열교환기(13) 측에 공급하기 위해 상기 제1 열교환기(12)에 의한 난방이 일시적으로 중단됨으로 인해 연속적인 난방공급이 불가능하게 되는 문제점이 있는 것이다.In addition, the heat pump typically has a drop in the first heat exchanger 12 or the second heat exchanger 13 that is installed outdoors due to the low outdoor temperature during heating (or hot water production) in winter. It is generated, thereby causing a sharp drop in the heating capacity or requires a separate defrosting operation for defrosting, the conventional heat pump shows a significant difference in the operating capacity due to seasonal factors (outdoor temperature), which is the compressor ( The hot gas generated by 11) is guided to the second heat exchanger 13 located on the outdoor side to perform defrosting (normal hot gas defrosting). In this case, a conventional heat pump The problem is that the continuous heating supply is impossible because the heating by the first heat exchanger 12 is temporarily stopped to supply hot gas to the second heat exchanger 13 side.
또한 종래의 히트펌프는 압축기(11)의 작동이 정지된 상태로 제상운전이 이루어짐에 따라 정상운전시에 상기 압축기(11)를 재가동할 때에, 상기 제2 열교환기(13)로부터 응축된 액상의 냉매가 상기 압축기(11)로 유입됨에 따라 액압축에 따른 압축기의 소손 우려가 있어 장치의 고장이나 손상이 발생될 우려가 있는 것이다.In addition, the conventional heat pump is a liquid refrigerant condensed from the second heat exchanger 13 when the compressor 11 is restarted during normal operation as the defrosting operation is performed while the compressor 11 is stopped. As the inflow to the compressor 11, there is a risk of damage to the compressor due to the liquid compression there is a risk of failure or damage of the device.
본 발명은 전술한 바와 같은 문제점을 해결하기 위한 것으로, 본 발명은 다수의 열교환기에 상호 다른 종류의 열원 또는 다른 종류의 부하를 연결하여 정상운전 및 제상운전시의 열효율을 증대시킬 수 있는 새로운 구조의 열교환기 교번타입 히트펌프시스템을 제공하는 것이다.The present invention is to solve the problems as described above, the present invention is connected to a plurality of heat exchangers of different types of heat sources or different types of loads of the new structure that can increase the thermal efficiency during normal operation and defrost operation It is to provide a heat exchanger alternating heat pump system.
본 발명의 특징에 따르면, 열매체가 순환되도록 구비된 순환라인(20)에 의해 상호 연결되는 압축기(31), 응축기, 팽창밸브(33,34) 및 증발기를 포함하여 이루어진 히트펌프시스템에 있어서;According to a feature of the present invention, a heat pump system comprising a compressor (31), a condenser, expansion valves (33, 34) and an evaporator interconnected by a circulation line (20) provided to circulate the heat medium;
상기 순환라인(20) 상에 연결되어 상기 응축기 또는 증발기로 작동되도록 구비되고, 냉방(냉수) 또는 난방(온수)를 공급하도록 부하(R,R1,R2)에 연결되거나 외기나 지열 또는 폐열을 포함한 열원(S,S1,S2)에 연결되는 제1 열교환기(32)와;Is connected to the circulation line 20 is provided to be operated as the condenser or evaporator, connected to the load (R, R1, R2) to supply cooling (cold water) or heating (hot water), or includes external air or geothermal or waste heat A first heat exchanger 32 connected to the heat sources S, S1 and S2;
상기 제1 열교환기(32)에 대응되어 상기 증발기 또는 응축기로 작동되도록 구비되고, 상기 순환라인(20) 상의 열매체가 순차적으로 흐르도록 상호 연결되며, 상기 제1 열교환기(32)의 연결상태에 대응되어 상기 열원(S,S1,S2) 또는 부하(R,R1,R2)에 연결되는 제2 및 제3 열교환기(35,36)와;Corresponding to the first heat exchanger 32 is provided so as to operate as the evaporator or condenser, are interconnected to sequentially flow the heat medium on the circulation line 20, the connection state of the first heat exchanger (32) Second and third heat exchangers (35,36) correspondingly connected to the heat sources (S, S1, S2) or loads (R, R1, R2);
상기 순환라인(20)의 열매체의 흐름방향에 따라 상기 팽창밸브(33,34)의 전단 또는 후단에 위치되도록 구비되고, 상기 제2 열교환기(35)와 제3 열교환기(36) 중에서 어느 하나에 우선적으로 열매체가 통과될 수 있게 상기 제2 열교환기(35) 또는 제3 열교환기(36) 측에 선택적으로 열매체를 절환시키도록 된 열교환기 절환밸브(38)를 포함하며;It is provided to be located at the front or rear end of the expansion valve (33, 34) in accordance with the flow direction of the heat medium of the circulation line 20, any one of the second heat exchanger 35 and the third heat exchanger (36) A heat exchanger switching valve (38) adapted to selectively switch the heat medium on the side of the second heat exchanger (35) or the third heat exchanger (36) to preferentially allow the heat medium to pass therethrough;
상기 제2 열교환기(35)와 제3 열교환기(36)에는 상기 제1 열교환기(32) 측에 부하(R,R1,R2)가 연결될 때에 다른 종류의 제1 열원(S1) 또는 제2 열원(S2)이 연결되고;When the loads R, R1, and R2 are connected to the second heat exchanger 35 and the third heat exchanger 36 on the side of the first heat exchanger 32, a different kind of first heat source S1 or second The heat source S2 is connected;
상기 팽창밸브(33,34)는 냉방 또는 난방운전시에 선택적으로 작동되도록 상기 제1 열교환기(32)와 열교환기 절환밸브(38) 사이에 위치되는 제1 팽창밸브(33)와, 상기 제2 열교환기(35)와 제3 열교환기(36) 사이에 위치되는 제2 팽창밸브(34)로 구비된 것을 특징으로 하는 열교환기 교번타입 히트펌프시스템이 제공된다.The expansion valves 33 and 34 may include a first expansion valve 33 positioned between the first heat exchanger 32 and the heat exchanger switching valve 38 so as to be selectively operated in a cooling or heating operation. Provided is a heat exchanger alternating heat pump system, characterized in that it is provided with a second expansion valve (34) positioned between the second heat exchanger (35) and the third heat exchanger (36).
본 발명의 다른 특징에 따르면, 열매체가 순환되도록 구비된 순환라인(20)에 의해 상호 연결되는 압축기(31), 응축기, 팽창밸브(33,34) 및 증발기를 포함하여 이루어진 히트펌프시스템에 있어서;According to another feature of the invention, the heat pump system comprising a compressor (31), a condenser, expansion valves (33, 34) and an evaporator interconnected by a circulation line (20) provided to circulate the heat medium;
상기 순환라인(20) 상에 연결되어 상기 응축기 또는 증발기로 작동되도록 구비되고, 냉방(냉수) 또는 난방(온수)를 공급하도록 부하(R,R1,R2)에 연결되거나 외기나 지열 또는 폐열을 포함한 열원(S,S1,S2)에 연결되는 제1 열교환기(32)와;Is connected to the circulation line 20 is provided to be operated as the condenser or evaporator, connected to the load (R, R1, R2) to supply cooling (cold water) or heating (hot water), or includes external air or geothermal or waste heat A first heat exchanger 32 connected to the heat sources S, S1 and S2;
상기 제1 열교환기(32)에 대응되어 상기 증발기 또는 응축기로 작동되도록 구비되고, 상기 순환라인(20) 상의 열매체가 순차적으로 흐르도록 상호 연결되며, 상기 제1 열교환기(32)의 연결상태에 대응되어 상기 열원(S,S1,S2) 또는 부하(R,R1,R2)에 연결되는 제2 및 제3 열교환기(35,36)와;Corresponding to the first heat exchanger 32 is provided so as to operate as the evaporator or condenser, are interconnected to sequentially flow the heat medium on the circulation line 20, the connection state of the first heat exchanger (32) Second and third heat exchangers (35,36) correspondingly connected to the heat sources (S, S1, S2) or loads (R, R1, R2);
상기 순환라인(20)의 열매체의 흐름방향에 따라 상기 팽창밸브(33,34)의 전단 또는 후단에 위치되도록 구비되고, 상기 제2 열교환기(35)와 제3 열교환기(36) 중에서 어느 하나에 우선적으로 열매체가 통과될 수 있게 상기 제2 열교환기(35) 또는 제3 열교환기(36) 측에 선택적으로 열매체를 절환시키도록 된 열교환기 절환밸브(38)를 포함하며;It is provided to be located at the front or rear end of the expansion valve (33, 34) in accordance with the flow direction of the heat medium of the circulation line 20, any one of the second heat exchanger 35 and the third heat exchanger (36) A heat exchanger switching valve (38) adapted to selectively switch the heat medium on the side of the second heat exchanger (35) or the third heat exchanger (36) to preferentially allow the heat medium to pass therethrough;
상기 제2 열교환기(35)와 제3 열교환기(36)에는 상기 제1 열교환기(32) 측에 열원(S,S1,S2)이 연결될 때에 다른 종류의 제1 부하(R1) 또는 제2 부하(R2)가 연결되고;When the heat sources S, S1, and S2 are connected to the second heat exchanger 35 and the third heat exchanger 36 on the side of the first heat exchanger 32, the first load R1 or the second type may be different. Load R2 is connected;
상기 팽창밸브(33,34)는 냉방 또는 난방운전시에 선택적으로 작동되도록 상기 제1 열교환기(32)와 열교환기 절환밸브(38) 사이에 위치되는 제1 팽창밸브(33)와, 상기 제2 열교환기(35)와 제3 열교환기(36) 사이에 위치되는 제2 팽창밸브(34)로 구비된 것을 특징으로 하는 열교환기 교번타입 히트펌프시스템이 제공된다.The expansion valves 33 and 34 may include a first expansion valve 33 positioned between the first heat exchanger 32 and the heat exchanger switching valve 38 so as to be selectively operated in a cooling or heating operation. Provided is a heat exchanger alternating heat pump system, characterized in that it is provided with a second expansion valve (34) positioned between the second heat exchanger (35) and the third heat exchanger (36).
본 발명의 다른 특징에 따르면, 상기 압축기(31) 측에는 상기 순환라인(20) 상에 구비되어 냉방 또는 난방운전에 따라 열매체의 흐름을 절환하도록 된 냉난방 절환밸브(37)가 구비된 것을 특징으로 하는 열교환기 교번타입 히트펌프시스템이 제공된다.According to another feature of the present invention, the compressor 31 is provided on the circulation line 20 is provided with a cooling and heating switching valve 37 is provided to switch the flow of the heat medium according to the cooling or heating operation A heat exchanger alternating heat pump system is provided.
이상에서와 같이 본 발명에 의하면, 본 발명은 상기 제2 열교환기(35)와 제3 열교환기(36)에 지열이나 폐수열 또는 외기와 같은 열원(S,S1,S2) 중에서 상호 다른 제1 열원(S1)과 제2 열원(S2)을 열교환 가능하게 연결함으로써, 계절적 특성이나 운전환경의 특성을 고려하여 상기 제2 열교환기(35)나 제3 열교환기(36)를 선택적으로 사용할 수 있으며, 이에 의해 계절이나 운전환경 등에 관계없이 열교환 효율을 최적화한 상태로 운전이 가능한 장점이 있다.As described above, according to the present invention, the second heat exchanger 35 and the third heat exchanger 36 in the heat source (S, S1, S2) different from each other, such as geothermal heat, wastewater heat or outside air By connecting (S1) and the second heat source (S2) so as to be heat exchangeable, it is possible to selectively use the second heat exchanger 35 or the third heat exchanger 36 in consideration of seasonal characteristics or characteristics of the operating environment, Accordingly, there is an advantage that the operation can be performed in an optimized state of heat exchange efficiency regardless of the season or the operating environment.
또한 본 발명은 냉방 또는 난방운전시에 선택적으로 작동되는 제1 팽창밸브(33)와 제2 팽창밸브(34)가 구비됨으로써, 상기 냉난방 절환밸브(37)와 열교환기 절환밸브(38) 이외의 밸브 구성을 최소화한 상태에서도 냉방운전이나 난방운전 또는 제상운전을 위해 열매체의 흐름에 따라 용이하게 작동될 수 있는 장점이 있다. In addition, the present invention is provided by the first expansion valve 33 and the second expansion valve 34 which is selectively operated during the cooling or heating operation, thereby other than the air-conditioning switching valve 37 and the heat exchanger switching valve 38 There is an advantage that can be easily operated according to the flow of the heat medium for cooling operation, heating operation or defrost operation even in a state in which the valve configuration is minimized.
또한 본 발명은 냉방 또는 난방운전에 따른 열매체의 흐름을 절환하는 냉난방 절환밸브(37) 이외에도 상기 제2 열교환기(35) 또는 제3 열교환기(36) 측에 선택적으로 열매체를 절환시키도록 열교환기 절환밸브(38)가 구비됨으로써, 상기 열교환기 절환밸브(38)에 의해 상기 제2 또는 제3 열교환기(35,36)에 열매체를 선택적으로 흐르도록 제어하는 것이 매우 용이할 뿐만 아니라 그에 따른 장치의 제작이나 유지보수 상의 편리함을 제공할 수 있는 장점이 있다.In addition, the present invention heat exchanger to selectively switch the heat medium to the second heat exchanger 35 or the third heat exchanger (36) in addition to the air-conditioning switching valve 37 for switching the flow of the heat medium according to the cooling or heating operation With the switching valve 38, it is very easy to control the selective flow of the heat medium to the second or third heat exchanger 35, 36 by the heat exchanger switching valve 38, as well as the device accordingly. There is an advantage that can provide convenience in the manufacture or maintenance of.
도 1은 종래의 히트펌프시스템 일례를 도시한 구성도1 is a configuration diagram showing an example of a conventional heat pump system
도 2는 본 발명의 일실시예에 따른 구성 및 열교환 흐름도2 is a configuration and heat exchange flow diagram according to an embodiment of the present invention
도 3는 본 발명의 일실시예에 따른 다른 열교환 흐름도3 is another heat exchange flow diagram according to an embodiment of the present invention.
도 4는 본 발명의 일실시예에 따른 또 다른 열교환 흐름도Figure 4 is another heat exchange flow diagram according to an embodiment of the present invention
도 5는 본 발명의 일실시예에 따른 또 다른 열교환 흐름도5 is another heat exchange flow diagram according to an embodiment of the present invention
도 6은 본 발명의 일실시예에 따른 또 다른 열교환 흐름도Figure 6 is another heat exchange flow diagram according to an embodiment of the present invention
도 7은 본 발명의 일실시예에 따른 또 다른 열교환 흐름도7 is yet another heat exchange flow diagram according to an embodiment of the present invention
도 8은 본 발명의 다른 실시예에 따른 열교환 흐름도8 is a heat exchange flow diagram according to another embodiment of the present invention
도 9는 본 발명의 다른 실시예에 따른 다른 열교환 흐름도9 is another heat exchange flowchart according to another embodiment of the present invention.
도 10은 본 발명의 다른 실시예에 따른 또 다른 열교환 흐름도10 is another heat exchange flowchart according to another embodiment of the present invention.
도 11은 본 발명의 다른 실시예에 따른 또 다른 열교환 흐름도11 is another heat exchange flow diagram according to another embodiment of the present invention
도 12는 본 발명의 다른 실시예에 따른 또 다른 열교환 흐름도12 is another heat exchange flow diagram according to another embodiment of the present invention
도 13은 본 발명의 다른 실시예에 따른 또 다른 열교환 흐름도13 is another heat exchange flow diagram according to another embodiment of the present invention
도 14는 본 발명의 또 다른 실시예에 따른 열교환 흐름도14 is a heat exchange flow diagram according to another embodiment of the present invention
도 15는 본 발명의 또 다른 실시예에 따른 다른 열교환 흐름도15 is another heat exchange flow diagram according to another embodiment of the present invention.
도 16은 본 발명의 또 다른 실시예에 따른 또 다른 열교환 흐름도16 is another heat exchange flow diagram according to another embodiment of the present invention.
도 17은 본 발명의 또 다른 실시예에 따른 또 다른 열교환 흐름도17 is another heat exchange flowchart according to another embodiment of the present invention.
도 18은 본 발명의 또 다른 실시예에 따른 또 다른 열교환 흐름도18 is another heat exchange flowchart according to another embodiment of the present invention.
상술한 본 발명의 목적, 특징들 및 장점은 다음의 상세한 설명을 통하여 보다 분명해질 것이다. 이하, 첨부된 도면에 의거하여 설명하면 다음과 같다.The objects, features and advantages of the present invention described above will become more apparent from the following detailed description. Hereinafter, described with reference to the accompanying drawings as follows.
도 2 내지 도 18은 본 발명의 다양한 실시예를 도시한 것이다. 도 2에 도시된 바와 같이, 본 발명은 응축기나 증발기로 작동되는 제1 열교환기(32)에 대응되어 증발기나 응축기로 작동되는 다른 열교환기(35,36)가 다수로 구비되어 필요에 따라 선택적으로 사용 가능한 열교환기 교번타입 히트펌프시스템으로, 본 발명은 열매체가 순환되도록 연장 형성된 순환라인(20)에 의해 열매체의 상변화에 따라 열교환이 이루어지도록 된 압축기(31)와 제1 열교환기(32), 팽창밸브(33,34), 제2 및 제3 열교환기(35,36)가 상호 연결되고, 상기 순환라인(20) 상에는 냉방(또는 냉수)과 난방(또는 온수)에 따라 상기 압축기(31)로부터 공급되는 열매체의 흐름을 절환하도록 된 냉난방 절환밸브(37)가 구비되어 있다.2 to 18 illustrate various embodiments of the present invention. As shown in FIG. 2, the present invention corresponds to the first heat exchanger 32 operated as a condenser or evaporator, and is provided with a plurality of other heat exchangers 35 and 36 operated as an evaporator or a condenser. In the heat exchanger alternate type heat pump system which can be used as a heat exchanger, the present invention provides a compressor (31) and a first heat exchanger (32) in which heat exchange is performed according to a phase change of the heat medium by a circulation line (20) extending to circulate the heat medium. ), Expansion valves (33, 34), the second and third heat exchangers (35, 36) are interconnected, and the compressor (according to the cooling (or cold water) and heating (or hot water) on the circulation line (20) 31 is provided with a cooling and heating switching valve 37 for switching the flow of the heat medium supplied from 31.
이러한 구성에 있어서, 상기 제1 열교환기(32)에는 사용처에 냉난방(또는 냉온수)를 공급하도록 부하(R) 측의 냉온수라인(40)이 연결되는 통상의 실내기에 상응하는 것이고, 상기 제2 및 제3 열교환기(35,36)는 통상의 실외기에 상응하여 열매체의 열의 외부로 방출하거나 외부열을 흡수하도록 된 것으로, 각 열교환기(32,35,36)는 냉방 또는 난방모드에 따라 증발기나 응축기로 작동하는 것이다. In this configuration, the first heat exchanger 32 corresponds to a conventional indoor unit in which a cold / hot water line 40 on the load R side is connected to supply air-conditioning (or cold / hot water) to a place of use. The third heat exchanger (35, 36) is to be discharged to the outside of the heat of the heat medium or absorb the external heat corresponding to the conventional outdoor unit, each heat exchanger (32, 35, 36) is evaporator or according to the cooling or heating mode It works as a condenser.
본 발명에서는 상기 제2 및 제3 열교환기(35,36)의 구성이 냉난방을 공급하는 정상운전이나 제상작업을 위한 제상운전 또는 계절적 특성이나 외부환경 등에 따라 수시로 교번운전이 가능하도록 제2 열교환기(35)와 제3 열교환기(36)로 이루어지고, 상기 순환라인(20) 상에는 운전상태에 따라 열매체의 흐름을 제어하도록 된 열교환기 절환밸브(38)가 구비된 것이다.In the present invention, the configuration of the second and third heat exchangers (35, 36) is a second heat exchanger to enable the frequent operation depending on the normal operation or defrosting operation for the defrosting operation or the seasonal characteristics or external environment for supplying heating and cooling It consists of a 35 and the third heat exchanger 36, the heat exchanger switching valve 38 is provided on the circulation line 20 to control the flow of the heat medium according to the operating state.
또한 상기 제2 및 제3 열교환기(35,36)에는 지열이나 폐수열(폐온수) 또는 외기 등과 같은 열원(S1,S2)을 순환시켜 열교환이 가능하도록 구비될 수 있는데, 상기 제2 열교환기(35)에는 열원(S1,S2) 중의 어느 하나에 해당되는 제1 열원(S1)이 열교환 가능하게 구비되고, 상기 제3 열교환기(36)에는 상기 제1 열원(S1)과는 다른 제2 열원(S2)이 열교환 가능하게 구비되게 된다. 이때에 지열이나 폐수열과 같은 열원(S1,S2)은 별도의 열원공급라인(41)으로 연결되지만, 외기를 사용할 때에는 별도의 열원공급라인(41)이 직접적으로 연결되지 않을 수도 있는 것이다. In addition, the second and third heat exchangers 35 and 36 may be provided to circulate heat sources S1 and S2 such as geothermal heat, waste water heat (waste water), or outside air to enable heat exchange. The first heat source S1 corresponding to any one of the heat sources S1 and S2 is provided to be heat-exchangeable at 35, and the third heat exchanger 36 has a second heat source different from the first heat source S1. S2 is provided so that heat exchange is possible. At this time, the heat source (S1, S2), such as geothermal or wastewater heat is connected to a separate heat source supply line 41, but when using the outside air, a separate heat source supply line 41 may not be directly connected.
이와 같은 열원(S1,S2)이 상기 제2 및 제3 열교환기(35,36)에 결합되는 경우에는 열원(S1,S2)과의 열교환에 의해 상기 각 열교환기(35,36)의 열효율을 증대시켜 상기 제1 열교환기(32)에 의한 냉난방효과를 극대화시킬 수 있을 뿐만 아니라 이로 인해 장치의 전체적인 성적계수를 향상시킬 수 있게 된다.When the heat sources S1 and S2 are coupled to the second and third heat exchangers 35 and 36, the thermal efficiency of each of the heat exchangers 35 and 36 is changed by heat exchange with the heat sources S1 and S2. In addition to maximizing the cooling and heating effect by the first heat exchanger 32 it is possible to improve the overall coefficient of performance of the device.
특히, 상기 제2 및 제3 열교환기(35,36)에 상호 다른 제1 열원(S1)과 제2 열원(S2)을 각각 결합하게 되면, 각 열원(S1,S2)의 공급상태나 계절적 특성에 따른 온도변화 또는 설치장소 등의 운전환경에 따라 상기 제2 열교환기(35)와 제3 열교환기(36)를 선택적 또는 수시로 교번하여 사용 가능하게 된다.In particular, when the first and second heat sources S1 and S2 which are different from each other are respectively coupled to the second and third heat exchangers 35 and 36, supply states or seasonal characteristics of the respective heat sources S1 and S2 are provided. The second heat exchanger 35 and the third heat exchanger 36 can be selectively or alternately used depending on the operating environment such as temperature change or installation place.
또한 상기 순환라인(20) 상에는 냉방 또는 난방운전에 따라 응축기로 작동하는 상기 각 열교환기(32,35,36)를 통과한 열매체를 감압하기 위한 팽창밸브(33,34)가 구비되는데, 상기 팽창밸브(33,34)는 냉방 또는 난방운전시에 선택적으로 작동되는 제1 팽창밸브(33)와 제2 팽창밸브(34)가 별도로 구비될 수 있으며, 상기 각 팽창밸브(33,34) 측에는 냉방 또는 난방운전에 따라 열매체가 우회 가능하도록 체크밸브(42) 또는 전자식 개폐밸브(43) 등이 구비되고, 제2 팽창밸브(34)의 경우에는 스텝퍼 모터에 의해 단계적으로 개폐가 가능한 통상의 전자식 팽창밸브로 구비되어 열매체의 양방향 흐름이 가능하도록 구비될 수 있는 것이다.In addition, the circulation line 20 is provided with expansion valves (33, 34) for reducing the heat medium passing through each of the heat exchangers (32, 35, 36) acting as a condenser according to the cooling or heating operation, the expansion The valves 33 and 34 may be separately provided with a first expansion valve 33 and a second expansion valve 34 which are selectively operated at the time of cooling or heating operation, and are cooled on each of the expansion valves 33 and 34. Alternatively, a check valve 42 or an electronic on / off valve 43 or the like is provided to bypass the heating medium according to the heating operation, and in the case of the second expansion valve 34, a general electronic expansion capable of opening and closing stepwise by a stepper motor is provided. The valve may be provided to enable bidirectional flow of the heating medium.
이와 같은 본 발명의 일실시예에 따른 구체적인 운전상태를 도 2 내지 도 7를 더하여 설명하면 다음과 같다. 도 2는 상기 제1 열원측(실외측) 열교환기(35)에 의한 난방운전을 도시한 것으로, 이는 상기 압축기(31)로부터 공급되는 열매체가 상기 제1 열교환기(32)에 의해 부하(R)측과의 열교환을 통해 난방 또는 온수 등을 공급하게 되고, 상기 제1 열교환기(32)를 통과한 열매체는 상기 체크밸브(42)를 통해 제1 팽창밸브(33)를 우회하여 상기 열교환기 절환밸브(38) 측으로 공급되게 된다. The detailed operation state according to an embodiment of the present invention as described above with reference to FIGS. 2 to 7 is as follows. FIG. 2 shows a heating operation by the first heat source side (outside) heat exchanger 35, in which the heat medium supplied from the compressor 31 is loaded by the first heat exchanger 32. Heating or hot water is supplied through heat exchange with the side, and the heat medium passing through the first heat exchanger 32 bypasses the first expansion valve 33 through the check valve 42 to exchange the heat exchanger. It is supplied to the switching valve 38 side.
이후에는 상기 열교환기 절환밸브(38)에 의해 상기 제3 열교환기(36)를 그대로 통과한 후에, 상기 제2 팽창밸브(34)과 상기 제2 열교환기(35)를 순차적으로 거쳐 열교환이 이루어지고, 상기 제2 열교환기(35)를 통과한 열매체는 상기 열교환기 절환밸브(38)에 의해 상기 압축기(31)로 유입되는데, 이때에 상기 제3 열교환기(36)는 그 작동이 정지된 상태로 구비되어 열매체와의 열교환이 이루어지지 않고, 단순히 열매체를 그대로 통과시키는 리시버 역할만을 하게 되며, 상기 제2 팽창밸브(34) 측의 전자식 개폐밸브(43)는 닫힌 상태가 된다.Thereafter, after passing through the third heat exchanger 36 by the heat exchanger switching valve 38 as it is, heat exchange is performed sequentially through the second expansion valve 34 and the second heat exchanger 35. The heat medium passing through the second heat exchanger 35 is introduced into the compressor 31 by the heat exchanger switching valve 38, at which time the third heat exchanger 36 stops its operation. It is provided in a state that the heat exchange with the heat medium is not made, it merely serves as a receiver to simply pass the heat medium as it is, the electronic on-off valve 43 of the second expansion valve 34 side is in a closed state.
또한 도 3에 도시된 바와 같이, 상기 제3 열교환기(36)에 의한 난방운전의 경우에는 상기 제1 열교환기(32)에서 부하(R)측과의 열교환이 이루어진 열매체가 상기 열교환기 절환밸브(38)에 의해 상기 제2 열교환기(35)를 그대로 통과한 후에, 상기 제2 팽창밸브(34)와 제3 열교환기(36)를 순차적으로 거치면서 열교환이 이루어지는데, 이때에 상기 제2 팽창밸브(34)는 전술된 바와 같이 양방향 흐름이 가능하도록 구비됨에 따라 상기 제2 열교환기(35)로부터 제3 열교환기(36) 측으로 열매체의 흐름이 가능하게 된다.In addition, as shown in FIG. 3, in the case of heating operation by the third heat exchanger 36, a heat medium in which heat exchange with the load R side is performed in the first heat exchanger 32 is performed in the heat exchanger switching valve. After passing through the second heat exchanger 35 as it is by (38), the heat exchange is performed while sequentially passing through the second expansion valve 34 and the third heat exchanger 36, wherein the second As the expansion valve 34 is provided to enable bi-directional flow as described above, the heat medium can flow from the second heat exchanger 35 to the third heat exchanger 36.
또한 도 4와 도 5에 도시된 바와 같이, 냉방운전의 경우에는 상기 압축기(31)로부터 공급되는 열매체가 상기 냉난방 절환밸브(37)를 통해 상기 열교환기 절환밸브(38) 측으로 흐르게 되고, 상기 열교환기 절환밸브(38)에 의해서는 응축기로 작동되는 상기 제2 열교환기(35) 또는 제3 열교환기(36)에 선택적으로 열매체를 흐르도록 하게 된다.In addition, as shown in FIGS. 4 and 5, in the cooling operation, the heat medium supplied from the compressor 31 flows to the heat exchanger switching valve 38 through the air conditioning switching valve 37, and the heat exchanger. The air switching valve 38 selectively flows the heat medium to the second heat exchanger 35 or the third heat exchanger 36 that operates as a condenser.
이후에 열매체는 상기 전자식 개폐밸브(43)가 개방됨에 따라 상기 제2 팽창밸브(34)를 우회하여 상기 제2 열교환기(35)와 제3 열교환기(36) 중의 어느 하나를 그대로 통과한 후에, 상기 열교환기 절환밸브(38)에 의해 상기 제1 팽창밸브(33)를 거쳐 상기 제1 열교환기(32)에서 부하(R)측과의 열교환이 이루어지게 된다.Thereafter, the heat medium bypasses the second expansion valve 34 as the electronic on / off valve 43 is opened, and then passes through any one of the second heat exchanger 35 and the third heat exchanger 36 as it is. By the heat exchanger switching valve 38, heat exchange with the load R side is performed in the first heat exchanger 32 via the first expansion valve 33.
한편, 난방운전 중에 상기 제2 열교환기(35) 또는 제3 열교환기(36) 중의 어느 하나에 대한 제상운전이 이루어지는 경우를 도 6과 도 7에 의해 설명하면 다음과 같다. 도 6은 상기 제2 열교환기(35)를 제상운전하는 것을 도시한 것으로, 이는 전술된 난방운전에서와 같이 상기 압축기(31)로부터 공급되는 열매체가 상기 제1 열교환기(32)에 의해 부하(R)측과의 열교환을 통해 난방 또는 온수 등을 공급하게 되고, 상기 제1 열교환기(32)를 통과한 열매체는 상기 열교환기 절환밸브(38)에 의해 상기 제2 열교환기(35)로 공급되는데, 이때에 상기 제2 열교환기(35)는 팬모터(39)가 정지된 상태에서 열매체가 통과됨에 따라 제상작업이 이루어지게 되고, 증발기로 작동되는 상기 제3 열교환기(36)에서 열교환이 이루어지게 된다.6 and 7 illustrate a case in which a defrosting operation of either the second heat exchanger 35 or the third heat exchanger 36 is performed during the heating operation. FIG. 6 shows defrosting of the second heat exchanger 35, in which the heat medium supplied from the compressor 31 is loaded by the first heat exchanger 32 as in the heating operation described above. Heating or hot water is supplied through heat exchange with the R) side, and the heat medium passing through the first heat exchanger 32 is supplied to the second heat exchanger 35 by the heat exchanger switching valve 38. At this time, the second heat exchanger 35 is defrosted as the heat medium passes while the fan motor 39 is stopped, and heat exchange is performed in the third heat exchanger 36 operated by the evaporator. Will be done.
또한 도 7은 제3 열교환기(36)를 제상운전하는 것을 도시한 것으로, 이는 전술된 제상운전에 따른 열매체의 흐름과는 상기 열교환기 절환밸브(38)에 의해 상기 제3 열교환기(36)로 열매체가 공급된다는 점이 상이한데, 이때에 상기 제3 열교환기(36)는 팬모터(39)가 정지된 상태에서 열매체가 통과됨에 따라 제상작업이 이루어지게 되고, 증발기로 작동되는 상기 제2 열교환기(35)에서 열교환이 이루어지게 된다.7 illustrates defrosting of the third heat exchanger 36, which is different from the flow of the heat medium according to the above-described defrosting operation by the heat exchanger switching valve 38. The heat exchanger is supplied with a different heat medium, wherein the third heat exchanger 36 is defrosted as the heat medium passes while the fan motor 39 is stopped, and the second heat exchanger is operated as an evaporator. Heat exchange takes place in the unit 35.
여기에서, 제상운전시에는 상기 압축기(31)로부터 공급되는 고온 고압의 열매체가 상기 제1 열교환기(32)를 먼저 통과함에 따라 장치에 의해 최상의 열교환 효율을 발휘하여 난방효과를 발휘하게 되고, 이후에 상기 제2 또는 제3 열교환기(35,36)의 제상작업이 이루어지게 된다.Here, during the defrosting operation, as the high temperature and high pressure heat medium supplied from the compressor 31 passes through the first heat exchanger 32 first, the device exerts the best heat exchange efficiency and exerts a heating effect. Defrosting of the second or third heat exchangers 35 and 36 is performed.
이러한 본 발명은 상기 제1 열교환기(32)에 의해 열교환이 이루어진 후에 제상작업이 이루어짐에 따라, 제상작업 이후에 상기 제2 열교환기(35) 또는 제3 열교환기(36)의 출구측에서의 열매체는 과냉각된 상태로 상기 제2 팽창밸브(34)에 공급됨에 따라, 상기 제2 팽창밸브(34)에 의해 열매체를 저온 저압으로 팽창하는 과정이 매우 용이하게 된다.According to the present invention, as the defrosting operation is performed after the heat exchange is performed by the first heat exchanger 32, the heat medium at the outlet side of the second heat exchanger 35 or the third heat exchanger 36 after the defrosting operation is As it is supplied to the second expansion valve 34 in a supercooled state, the process of expanding the heat medium to low temperature and low pressure by the second expansion valve 34 becomes very easy.
전술된 바와 같은 과냉각된 열매체를 상기 제2 팽창밸브(34)에 의해 팽창된 상태로 공급됨에 따라, 상기 제2 팽창밸브(34)의 후단에 위치되는 상기 제2 열교환기(35) 또는 제3 열교환기(36)는 그에 의한 열흡수 능력을 증가시킬 수 있을 뿐만 아니라 장치의 전체적인 난방능력 및 성적계수를 증대시킬 수 있는 효과를 가지게 된다. As the supercooled heating medium as described above is supplied in the expanded state by the second expansion valve 34, the second heat exchanger 35 or the third heat exchanger positioned at the rear end of the second expansion valve 34. The heat exchanger 36 may not only increase the heat absorption capacity thereby, but also increase the overall heating capacity and the coefficient of performance of the apparatus.
한편, 도 8 내지 도 13에 도시된 바와 같이, 상기 압축기(31) 측의 순환라인(20) 상에는 전술된 바와 같은 냉난방 절환밸브(37)가 구비되지 않을 수도 있는데, 이러한 경우에는 난방 또는 냉방운전을 단독적으로 행할 수 있는 히트펌프시스템을 제공하게 된다.On the other hand, as shown in Figures 8 to 13, on the circulation line 20 of the compressor 31 side may not be provided with the above-described air conditioning switching valve 37, in this case heating or cooling operation It is to provide a heat pump system that can be performed alone.
구체적으로, 도 8과 도 9는 상기 제2 열교환기(35)와 제3 열교환기(36)에 의한 난방운전을 도시한 것이고, 도 10과 도 11은 상기 제2 열교환기(35)와 제3 열교환기(36)에 의한 냉방운전을 도시한 것이며, 도 12와 도 13은 상기 제2 열교환기(35)와 제3 열교환기(36)에 의한 제상운전을 도시한 것으로, 이에 대한 구체적인 작동상태는 전술된 도 2 내지 도 7에서 이미 언급한 것에 동일한 것이다. Specifically, FIGS. 8 and 9 illustrate heating operation by the second heat exchanger 35 and the third heat exchanger 36, and FIGS. 10 and 11 illustrate the second heat exchanger 35 and the third heat exchanger. 3 illustrates the cooling operation by the heat exchanger 36, and FIGS. 12 and 13 illustrate the defrosting operation by the second heat exchanger 35 and the third heat exchanger 36, and specific operation thereof. The state is the same as that already mentioned in Figs.
이상에서는 상기 제1 열교환기(32)에 부하(R)측이 연결되고, 상기 제2 및 제3 열교환기(35,36)에 각각 다른 종류의 제1 열원(S1)과 제2 열원(S)이 연결된 것이나, 이외에도 상기 제1 열교환기(32) 측에 열원(S)이 연결되고, 상기 제2 및 제3 열교환기(35,36) 측에 다른 종류의 제1 부하(R1)와 제2 부하(R2)가 연결될 수 있는데, 이를 도 14 내지 도 18에 의해 설명하면 다음과 같다.In the above, the load R side is connected to the first heat exchanger 32, and different types of first heat source S1 and second heat source S are respectively connected to the second and third heat exchangers 35 and 36. ) Is connected, but in addition to the heat source (S) is connected to the first heat exchanger (32) side, the first and second kinds of loads (R1) and other types of the second and third heat exchangers (35, 36) side Two loads R2 may be connected, which will be described below with reference to FIGS. 14 to 18.
도 14에 도시된 바와 같이, 상기 제1 열교환기(32) 측에 열원(S)과의 열교환이 가능하도록 열원공급라인(41)이 연결되고, 상기 제2 및 제3 열교환기(35,36) 측에는 냉방(냉수)이나 난방(온수 또는 급탕)을 공급하도록 냉온수라인(40)에 의해 제1 부하(R1)와 제2 부하(R2)가 각각 연결되는데, 상기 제2 열교환기(35)에 의한 냉방운전을 설명하면 다음과 같다.As shown in FIG. 14, a heat source supply line 41 is connected to the first heat exchanger 32 to enable heat exchange with the heat source S, and the second and third heat exchangers 35 and 36. The first load R1 and the second load R2 are connected to the second heat exchanger 35 by the cold / hot water line 40 to supply cooling (cold water) or heating (hot water or hot water) to the side. Referring to the cooling operation by the following.
상기 제2 열교환기(35)에 의한 냉방운전에서는 상기 1 열교환기(32)가 응축기로 작동되고, 상기 제2 열교환기(35)가 증발기로 작동되어 제1 부하(R1) 측에 냉방(또는 냉수)를 공급하게 된다.In the cooling operation by the second heat exchanger 35, the first heat exchanger 32 is operated as a condenser, and the second heat exchanger 35 is operated as an evaporator to cool the air to the first load R1 side (or Cold water).
구체적으로, 상기 압축기(31)로부터 공급되는 열매체는 상기 제1 열교환기(32)를 거쳐 체크밸브(42)를 통해 상기 열교환기 절환밸브(38)에 의해 상기 제3 열교환기(36) 측으로 열매체가 공급되는데, 이때에 열매체는 고온 고압의 상태를 유지하여 상기 제2 열교환기(36)에 의해 제2 부하(R2) 측에 온수(특히, 급탕)를 공급할 수 있게 되고, 이후에 열매체가 상기 제2 팽창밸브(34)를 통해 상기 제2 열교환기(35)로 공급됨에 따라 상기 제2 열교환기(35)에 의해 제1 부하(R1)측에 냉방(냉수)를 공급하게 된다.Specifically, the heat medium supplied from the compressor 31 is heat medium to the third heat exchanger 36 side by the heat exchanger switching valve 38 via the check valve 42 via the first heat exchanger 32. At this time, the heat medium is maintained in a state of high temperature and high pressure to supply hot water (especially hot water supply) to the second load R2 side by the second heat exchanger 36, after which the heat medium As the second heat exchanger 35 is supplied to the second heat exchanger 35 through the second expansion valve 34, cooling (cold water) is supplied to the first load R1 by the second heat exchanger 35.
이러한 본 발명은 냉방과 온수(급탕)을 동시에 공급하는 데에 효과적인 것으로, 이러한 경우에도 전술된 바와 같이 상기 제3 열교환기(36)의 출구측에서의 열매체는 과냉각된 상태로 상기 제2 팽창밸브(34)에 공급됨에 따라, 상기 제2 팽창밸브(34)에 의해 열매체를 저온 저압으로 팽창하는 과정이 매우 용이하게 되고, 이에 의해 과냉각된 열매체를 상기 제2 팽창밸브(34)에 의해 팽창된 상태로 공급됨에 따라, 상기 제2 팽창밸브(34)의 후단에 위치되는 상기 제2 열교환기(35)에 의한 열흡수 능력을 증가시킬 수 있을 뿐만 아니라 장치의 전체적인 난방능력 및 성적계수를 증대시킬 수 있는 효과를 가지게 된다.The present invention is effective in simultaneously supplying cooling and hot water (hot water supply), and even in this case, as described above, the heat medium at the outlet side of the third heat exchanger 36 is in the supercooled state and the second expansion valve 34 ), The process of expanding the heat medium to low temperature and low pressure by the second expansion valve 34 becomes very easy, whereby the super-cooled heat medium is expanded by the second expansion valve 34. As supplied, it is possible not only to increase the heat absorption capacity of the second heat exchanger 35 located at the rear end of the second expansion valve 34, but also to increase the overall heating capacity and the coefficient of performance of the apparatus. Will have an effect.
또한 도 15에 도시된 바와 같이, 상기 제3 열교환기(36)에 의해 냉방운전은 상기 압축기(31)로부터 공급되는 열매체가 상기 열교환기 절환밸브(38)에 의해 상기 제2 열교환기(35) 측으로 먼저 공급되어 상기 제1 부하(R1) 측에 온수(급탕)을 공급하게 되고, 이후에 상기 제3 열교환기(36)에 의해 제2 부하(R2) 측에 냉방(냉수)를 공급하게 된다.In addition, as shown in FIG. 15, in the cooling operation by the third heat exchanger 36, the heat medium supplied from the compressor 31 is transferred to the second heat exchanger 35 by the heat exchanger switching valve 38. It is first supplied to the side to supply hot water (hot water) to the first load (R1) side, and then to the cooling (cold water) to the second load (R2) side by the third heat exchanger (36). .
한편, 도 16과 도 17에 도시된 바와 같이, 상기 냉난방 절환밸브(37)가 구비되지 않은 경우에 있어서도, 상기 제1 열교환기(32)를 통과한 열매체가 상기 열교환기 절환밸브(38)에 의해 제2 열교환기(35) 또는 제3 열교환기(36)로 열매체를 공급함에 따라, 도 16에서와 같이 상기 제3 열교환기(36)에 의해 온수(급탕)을 공급하고, 상기 제2 열교환기(35)에 의해 냉방(냉수)를 공급하거나 또는 도 17에서와 같이 상기 제2 열교환기(35)에 의해 온수(급탕)을 공급하고, 상기 제3 열교환기(36)에 의해 냉방(냉수)을 공급할 수 있게 된다.On the other hand, as shown in Figure 16 and 17, even when the air-conditioning switching valve 37 is not provided, the heat medium passing through the first heat exchanger 32 is transferred to the heat exchanger switching valve 38. As the heat medium is supplied to the second heat exchanger 35 or the third heat exchanger 36, hot water (hot water) is supplied by the third heat exchanger 36 as shown in FIG. 16, and the second heat exchanger is performed. Cooling (cold water) is supplied by the gas 35 or hot water (hot water) is supplied by the second heat exchanger 35 as shown in FIG. 17, and cooled (cold water) by the third heat exchanger 36. ) Can be supplied.
또한 도 18에 도시된 바와 같이, 제상운전시에는 상기 제2 및 제3 열교환기(35,36)에 의해 난방이나 온수(급탕)을 공급할 때에 상기 제2 열교환기(32)에 적상된 성에를 제거하기 위해 상기 제2 열교환기(32) 측의 팬모터(39)가 정지되고, 상기 각 절환밸브(37,38)와 팽창밸브(33,34) 및 체크밸브(42)와 전자식 개폐밸브(43) 등의 작동이 절환하게 된다.In addition, as shown in FIG. 18, during defrosting operation, frost accumulated in the second heat exchanger 32 when heating or hot water (hot water supply) is supplied by the second and third heat exchangers 35 and 36. The fan motor 39 on the second heat exchanger 32 side is stopped for removal, and each of the switching valves 37 and 38, the expansion valves 33 and 34, the check valve 42 and the electronic shut-off valve ( 43) the operation of the lamp is switched.
이러한 작동에 의해 난방운전과는 반대로 열매체가 흐름에 따라 상기 압축기(32)로부터 공급되는 고온 고압의 열매체가 상기 제2 열교환기(32) 측에 우선적으로 통과되어 제상작업이 이루어지게 되는데, 이후에 열매체는 다소 온도가 낮아진 상태로 상기 제3 열교환기(36)를 거침에 따라 일부 온수를 공급할 수 있게 되고, 상기 제2 열교환기(35)는 통상의 증발기로 작동되게 된다.By this operation, as opposed to the heating operation, as the heat medium flows, the high temperature and high pressure heat medium supplied from the compressor 32 is preferentially passed to the second heat exchanger 32 to perform a defrosting operation. The heat medium is able to supply some hot water as it passes through the third heat exchanger 36 in a state where the temperature is somewhat lowered, and the second heat exchanger 35 is operated by a conventional evaporator.
이상에서 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명백할 것이다.The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

Claims (3)

  1. 열매체가 순환되도록 구비된 순환라인(20)에 의해 상호 연결되는 압축기(31), 응축기, 팽창밸브(33,34) 및 증발기를 포함하여 이루어진 히트펌프시스템에 있어서;In a heat pump system comprising a compressor (31), a condenser, expansion valves (33, 34) and an evaporator interconnected by a circulation line (20) provided to circulate the heat medium;
    상기 순환라인(20) 상에 연결되어 상기 응축기 또는 증발기로 작동되도록 구비되고, 냉방(냉수) 또는 난방(온수)를 공급하도록 부하(R,R1,R2)에 연결되거나 외기나 지열 또는 폐열을 포함한 열원(S,S1,S2)에 연결되는 제1 열교환기(32)와;Is connected to the circulation line 20 is provided to be operated as the condenser or evaporator, connected to the load (R, R1, R2) to supply cooling (cold water) or heating (hot water), or includes external air or geothermal or waste heat A first heat exchanger 32 connected to the heat sources S, S1 and S2;
    상기 제1 열교환기(32)에 대응되어 상기 증발기 또는 응축기로 작동되도록 구비되고, 상기 순환라인(20) 상의 열매체가 순차적으로 흐르도록 상호 연결되며, 상기 제1 열교환기(32)의 연결상태에 대응되어 상기 열원(S,S1,S2) 또는 부하(R,R1,R2)에 연결되는 제2 및 제3 열교환기(35,36)와;Corresponding to the first heat exchanger 32 is provided so as to operate as the evaporator or condenser, are interconnected to sequentially flow the heat medium on the circulation line 20, the connection state of the first heat exchanger (32) Second and third heat exchangers (35,36) correspondingly connected to the heat sources (S, S1, S2) or loads (R, R1, R2);
    상기 순환라인(20)의 열매체의 흐름방향에 따라 상기 팽창밸브(33,34)의 전단 또는 후단에 위치되도록 구비되고, 상기 제2 열교환기(35)와 제3 열교환기(36) 중에서 어느 하나에 우선적으로 열매체가 통과될 수 있게 상기 제2 열교환기(35) 또는 제3 열교환기(36) 측에 선택적으로 열매체를 절환시키도록 된 열교환기 절환밸브(38)를 포함하며;It is provided to be located at the front or rear end of the expansion valve (33, 34) in accordance with the flow direction of the heat medium of the circulation line 20, any one of the second heat exchanger 35 and the third heat exchanger (36) A heat exchanger switching valve (38) adapted to selectively switch the heat medium on the side of the second heat exchanger (35) or the third heat exchanger (36) to preferentially allow the heat medium to pass therethrough;
    상기 제2 열교환기(35)와 제3 열교환기(36)에는 상기 제1 열교환기(32) 측에 부하(R,R1,R2)가 연결될 때에 다른 종류의 제1 열원(S1) 또는 제2 열원(S2)이 연결되고;When the loads R, R1, and R2 are connected to the second heat exchanger 35 and the third heat exchanger 36 on the side of the first heat exchanger 32, a different kind of first heat source S1 or second The heat source S2 is connected;
    상기 팽창밸브(33,34)는 냉방 또는 난방운전시에 선택적으로 작동되도록 상기 제1 열교환기(32)와 열교환기 절환밸브(38) 사이에 위치되는 제1 팽창밸브(33)와, 상기 제2 열교환기(35)와 제3 열교환기(36) 사이에 위치되는 제2 팽창밸브(34)로 구비된 것을 특징으로 하는 열교환기 교번타입 히트펌프시스템.The expansion valves 33 and 34 may include a first expansion valve 33 positioned between the first heat exchanger 32 and the heat exchanger switching valve 38 so as to be selectively operated in a cooling or heating operation. Heat exchanger alternating heat pump system, characterized in that provided with a second expansion valve (34) positioned between the second heat exchanger (35) and the third heat exchanger (36).
  2. 열매체가 순환되도록 구비된 순환라인(20)에 의해 상호 연결되는 압축기(31), 응축기, 팽창밸브(33,34) 및 증발기를 포함하여 이루어진 히트펌프시스템에 있어서;In a heat pump system comprising a compressor (31), a condenser, expansion valves (33, 34) and an evaporator interconnected by a circulation line (20) provided to circulate the heat medium;
    상기 순환라인(20) 상에 연결되어 상기 응축기 또는 증발기로 작동되도록 구비되고, 냉방(냉수) 또는 난방(온수)를 공급하도록 부하(R,R1,R2)에 연결되거나 외기나 지열 또는 폐열을 포함한 열원(S,S1,S2)에 연결되는 제1 열교환기(32)와;Is connected to the circulation line 20 is provided to be operated as the condenser or evaporator, connected to the load (R, R1, R2) to supply cooling (cold water) or heating (hot water), or includes external air or geothermal or waste heat A first heat exchanger 32 connected to the heat sources S, S1 and S2;
    상기 제1 열교환기(32)에 대응되어 상기 증발기 또는 응축기로 작동되도록 구비되고, 상기 순환라인(20) 상의 열매체가 순차적으로 흐르도록 상호 연결되며, 상기 제1 열교환기(32)의 연결상태에 대응되어 상기 열원(S,S1,S2) 또는 부하(R,R1,R2)에 연결되는 제2 및 제3 열교환기(35,36)와;Corresponding to the first heat exchanger 32 is provided so as to operate as the evaporator or condenser, are interconnected to sequentially flow the heat medium on the circulation line 20, the connection state of the first heat exchanger (32) Second and third heat exchangers (35,36) correspondingly connected to the heat sources (S, S1, S2) or loads (R, R1, R2);
    상기 순환라인(20)의 열매체의 흐름방향에 따라 상기 팽창밸브(33,34)의 전단 또는 후단에 위치되도록 구비되고, 상기 제2 열교환기(35)와 제3 열교환기(36) 중에서 어느 하나에 우선적으로 열매체가 통과될 수 있게 상기 제2 열교환기(35) 또는 제3 열교환기(36) 측에 선택적으로 열매체를 절환시키도록 된 열교환기 절환밸브(38)를 포함하며;It is provided to be located at the front or rear end of the expansion valve (33, 34) in accordance with the flow direction of the heat medium of the circulation line 20, any one of the second heat exchanger 35 and the third heat exchanger (36) A heat exchanger switching valve (38) adapted to selectively switch the heat medium on the side of the second heat exchanger (35) or the third heat exchanger (36) to preferentially allow the heat medium to pass therethrough;
    상기 제2 열교환기(35)와 제3 열교환기(36)에는 상기 제1 열교환기(32) 측에 열원(S,S1,S2)이 연결될 때에 다른 종류의 제1 부하(R1) 또는 제2 부하(R2)가 연결되고;When the heat sources S, S1, and S2 are connected to the second heat exchanger 35 and the third heat exchanger 36 on the side of the first heat exchanger 32, the first load R1 or the second type may be different. Load R2 is connected;
    상기 팽창밸브(33,34)는 냉방 또는 난방운전시에 선택적으로 작동되도록 상기 제1 열교환기(32)와 열교환기 절환밸브(38) 사이에 위치되는 제1 팽창밸브(33)와, 상기 제2 열교환기(35)와 제3 열교환기(36) 사이에 위치되는 제2 팽창밸브(34)로 구비된 것을 특징으로 하는 열교환기 교번타입 히트펌프시스템.The expansion valves 33 and 34 may include a first expansion valve 33 positioned between the first heat exchanger 32 and the heat exchanger switching valve 38 so as to be selectively operated in a cooling or heating operation. Heat exchanger alternating heat pump system, characterized in that provided with a second expansion valve (34) positioned between the second heat exchanger (35) and the third heat exchanger (36).
  3. 제1항 또는 제2항에 있어서, 상기 압축기(31) 측에는 상기 순환라인(20) 상에 구비되어 냉방 또는 난방운전에 따라 열매체의 흐름을 절환하도록 된 냉난방 절환밸브(37)가 구비된 것을 특징으로 하는 열교환기 교번타입 히트펌프시스템.According to claim 1 or 2, wherein the compressor (31) is provided on the circulation line 20 is provided with a cooling and heating switching valve 37 to switch the flow of the heat medium according to the cooling or heating operation Heat exchanger alternating heat pump system.
PCT/KR2017/008094 2016-08-01 2017-07-27 Heat exchanger alternating-type heat pump system WO2018026137A1 (en)

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CN113720036A (en) * 2021-08-30 2021-11-30 广州大学 Multifunctional double-source heat pump system and control method thereof
CN113720036B (en) * 2021-08-30 2023-03-10 广州大学 Multifunctional double-source heat pump system and control method thereof

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