WO2022255316A1 - Machine de climatisation et de source de chaleur - Google Patents

Machine de climatisation et de source de chaleur Download PDF

Info

Publication number
WO2022255316A1
WO2022255316A1 PCT/JP2022/021981 JP2022021981W WO2022255316A1 WO 2022255316 A1 WO2022255316 A1 WO 2022255316A1 JP 2022021981 W JP2022021981 W JP 2022021981W WO 2022255316 A1 WO2022255316 A1 WO 2022255316A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
heat exchanger
inlet
outlet
air
Prior art date
Application number
PCT/JP2022/021981
Other languages
English (en)
Japanese (ja)
Inventor
直芳 庄山
俊一 橋本
正宣 広田
大 松井
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2022255316A1 publication Critical patent/WO2022255316A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle

Definitions

  • the present disclosure relates to an air conditioner that has both cooling and heating functions and that generates cold water or hot water as a heat medium.
  • the heat source device of Patent Document 1 is equipped with a water heat exchanger, and during heating operation, water that has become low temperature due to the heating load of the building or the like is taken in from the inlet of the housing, and the water heat exchanger overheats it to produce hot water. It is generated and sent to the heating load such as a building from the outlet of the housing. During cooling operation, hot water is taken in from the introduction pipe, cold water is generated, and sent out from the outlet.
  • the water heat exchanger constitutes part of the water flow path and the refrigerant flow path, and the refrigerant flow path comprises a compressor, a four-way valve, an air heat exchanger, an expansion valve, a receiver tank, and a water heat exchanger.
  • a refrigerating cycle is configured by circulating a refrigerant through a refrigerant circuit connected in a ring.
  • Water may be pumped into the building by a centrifugal pump installed outside the heat source.
  • the suction port of a centrifugal pump is usually at the same height as the rotating shaft, and the discharge port faces upward. Therefore, like the heat source device of Patent Literature 1, the water outlet is generally positioned lower than the water inlet.
  • the water outlet of the water heat exchanger is positioned lower than the water inlet, and water always flows from top to bottom in the water flow path.
  • the water inlet pipe that connects the inlet and the water heat exchanger inlet and the water outlet pipe that connects the outlet and the water heat exchanger water outlet are horizontal with almost no height difference, and maintain a vertical relationship without intersecting each other.
  • the flow direction of the refrigerant flow path changes depending on the cooling and heating operation mode.
  • cooling operation that is, when the refrigeration cycle operates as a water heat exchanger or an evaporator, the refrigerant with a low thirst degree containing a large amount of liquid phase flows through the refrigerant flow path. It flows in from the lower port, and the vaporized gaseous refrigerant flows out from the upper port.
  • vapor-phase refrigerant flows in from the upper port of the refrigerant channel and condensed liquid-phase refrigerant flows out from the lower port.
  • the gas-phase refrigerant flows through the upper port and the liquid-phase refrigerant flows through the lower port, so that unstable flows such as backflow of the liquid phase due to gravity can be suppressed.
  • the water heat exchanger has a countercurrent flow during cooling operation, the temperature difference between the refrigerant and the water is smaller than in the case of a countercurrent flow. Evaporation temperature of the refrigerant increases. As a result, the suction refrigerant pressure of the compressor increases, so that the compressor can be operated with less power.
  • the discharge pressure of the compressor is increased by lowering the condensation temperature of the refrigerant by making the water heat exchanger, which functions as a condenser during heating operation, countercurrent without changing the upper and lower sides of the inlet pipe and the outlet pipe of the housing.
  • the air conditioning heat source device in the present disclosure includes a compressor that circulates refrigerant, a four-way valve, an air heat exchanger that exchanges heat between air and refrigerant, an expansion valve, and a water heat exchange that exchanges heat between water and refrigerant.
  • An air-conditioning heat source equipment comprising a refrigerant circuit in which a container is connected in a ring, comprising: a housing that encloses the refrigerant circuit;
  • the water heat exchanger has a water flow path that flows upward from the bottom, and a refrigerant flow path that flows downward from the top during heating operation. and an outlet connected by a water outlet pipe, and an inlet connected to the water inlet of the water heat exchanger by a water inlet pipe, wherein the inlet is located above the outlet. do.
  • the high-temperature vapor-phase refrigerant discharged from the compressor flows through the four-way valve into the upper port of the water heat exchanger.
  • the liquid-phase refrigerant condensed in the water heat exchanger flows into the receiver tank.
  • the flow direction of the refrigerant flow path of the water heat exchanger is from top to bottom. Since the outlet port of the water heat exchanger is located above the inlet port, the water heat exchanger will flow counter-currently during heating operation. The input of the compressor during operation can be reduced.
  • FIG. 1 is a configuration diagram of an air-conditioning heat source device during heating operation according to Embodiment 1 of the present disclosure.
  • FIG. 2 is a view of the water heat exchanger according to Embodiment 2 of the present disclosure, viewed from the inlet side
  • the water heat exchanger becomes a parallel flow during heating operation, the temperature difference between the water flow path and the refrigerant flow path increases, and the condensing temperature of the heat pump cycle rises, so the input to the compressor increases. .
  • the inventors discovered a problem that when the vertical relationship of the inlet and the outlet is switched, the connection piping with the water circulation pump installed outside the housing becomes complicated. came to configure.
  • the discharge pressure of the compressor is increased by lowering the condensation temperature of the refrigerant by making the water heat exchanger, which functions as a condenser during heating operation, countercurrent without changing the upper and lower sides of the inlet pipe and the outlet pipe of the housing.
  • FIG. 1 shows a configuration diagram of an air-conditioning heat source machine operating in a heating mode according to Embodiment 1 of the present disclosure.
  • An air conditioning heat source machine for carrying out the present disclosure will be described.
  • a building 9 for air conditioning, a heat source device 100 and a water pump 8 are connected by a water pipe 80 .
  • the housing 7 of the heat source device 100 includes a water outlet 70 and a water inlet 71 connected to a water pipe 80 . Water is sent from the outlet 70 to the building 9 through the water pipe 80 , and water returning from the building 9 flows in from the inlet 71 .
  • the heat source equipment 100 includes a water heat exchanger 3 .
  • the water outlet 30 of the water heat exchanger 3 is connected to the outlet 70 through the water outlet pipe 72 .
  • a water inlet 31 of the water heat exchanger 3 is connected to the inlet 71 through a water inlet pipe 73 .
  • the heat source device 100 configures a refrigerant circuit in which a compressor 1, a four-way valve 2, a water heat exchanger 3, a receiver tank 4, an expansion valve 5, and an air heat exchanger 6 are annularly connected. there is
  • the heat source device 100 includes a fan 10 provided on the top of the housing 7 . By driving the fan 10, the air in the housing 7 is discharged, and the air flows in from the side of the housing 7 and the outside air passes through the air heat exchanger 6, so that the air heat exchanger 6 performs heat exchange between the refrigerant and the air.
  • the upper port 32 of the refrigerant channel of the water heat exchanger 3 is connected to the four-way valve 2 , and the lower port 33 of the water heat exchanger 3 is connected to the receiver tank 4 .
  • the upper opening 32 is located above the lower opening 33 .
  • the water outlet 30 of the water heat exchanger 3 is located above the water inlet 31 .
  • the water discharge pipe 72 has two or more turning parts 75 that change the direction of the pipe. It is formed longer than the pipe length at the same height as the water outlet 30.
  • the water inlet pipe 73 is provided with two or more turning parts 75 for changing the direction of the pipe, and the pipe length at the same height as the water inlet 31 of the water heat exchanger 3 in the water inlet pipe 73 is It is formed longer than the pipe length at the same height as the inlet 71 of 7.
  • the four-way valve is arranged as shown in FIG.
  • the refrigerant heats the water flowing through the water flow path of the water heat exchanger 3 while condensing, and then flows out from the lower port 33 as a liquid phase and enters the receiver tank 4 .
  • the refrigerant expanded by the expansion valve 5 and lowered to a low temperature is warmed by the air heat exchanger 6 to evaporate and enter the compressor 1 as a gas-phase refrigerant.
  • the water heated by the water heat exchanger 3 is sent to the building 9 through the outlet 70 by the water pump 8 and cooled by the air conditioning load. For example, the temperature drops by 5°C. Water coming out of the building 9 is returned to the water heat exchanger 3 of the heat source equipment 100 through the inlet 71 .
  • the water flow path of the water heat exchanger 3 during operation in the heating mode becomes a countercurrent flowing from top to bottom in FIG.
  • the length of the pipe located at the bottom of the housing 7, where the flow velocity of the air flow induced by the fan 10 is slow is longer. be done.
  • the temperature of the water flowing through the water heat exchanger 3 is lowered, and the condensation temperature at the same outlet water temperature is lowered.
  • the water heat exchanger 3 is provided with the housing 7 containing the refrigerant circuit and the fan 10 positioned above the housing 7 and discharging the air in the housing 7 to the outside. has a water flow path that flows from bottom to top and a refrigerant flow path that flows from top to bottom during heating operation. and an inlet 71 connected to the water inlet 31 of the water heat exchanger 3 by a water inlet pipe 73 , and the inlet 71 is positioned above the outlet 70 .
  • the refrigerant and water can flow counter-currently in the water heat exchanger 3 during heating operation.
  • the temperature difference between the water flow path and the refrigerant flow path becomes smaller, and the condensation temperature in the refrigerant flow path decreases.
  • the discharge temperature of the compressor 1 is lowered, and the input to the compressor 1 can be reduced.
  • the length of the water discharge pipe 72 at the same height as the outlet 70 of the housing 7 is longer than the length of the water discharge pipe 72 at the same height as the water outlet 30 of the water heat exchanger 3.
  • the length of the pipe located at the bottom of the housing 7, where the flow velocity of the air flow induced by the fan 10 is slow is longer, so that the heat escape from the water having a higher temperature than the outside air temperature is increased. can be suppressed.
  • the condensing temperature of the refrigerant flow path is reduced, so the input to the compressor 1 can be further reduced.
  • FIG. 2 shows a view of the water heat exchanger 3 of the air-conditioning heat source machine according to Embodiment 2 of the present disclosure, viewed from the introduction port 71 side. An air-conditioning heat source device for carrying out the present embodiment will be described.
  • Each of the water inlet pipe 73 and the water outlet pipe 72 has two or less turning parts 75, and when projected onto the side surface of the housing 7 having the inlet 71, a straight line connecting the inlet 71 and the water inlet 31 and a guide It is configured such that straight lines connecting the outlet 70 and the water outlet 30 of the water heat exchanger 3 intersect.
  • the two turning parts 75 allow the piping to be the shortest path, so heat escape can be efficiently suppressed.
  • the projected lines of the water inlet pipe 73 and the water outlet pipe 72 cross each other, the horizontal distance C between the water inlet 31 and the water outlet 30 of the housing 7 can be reduced.
  • the water pipe 80 outside the housing 7 can be shortened, so heat escape from the pipe to the outside air outside the housing 7 can be suppressed.
  • each of the water inlet pipe 73 and the water outlet pipe 72 has two or less turning portions 75, and when projected onto the side surface of the housing 7 where the inlet 71 is located, the inlet 71 and A straight line connecting the water inlet 31 and a straight line connecting the outlet 70 and the water outlet 30 of the water heat exchanger 3 intersect.
  • the horizontal distance C between the outlet port 70 and the inlet port 71 can be reduced, and the arrangement can be made compact. Therefore, heat escape from the water pipe 80 outside the housing 7 is suppressed.
  • the condensing temperature of the refrigerant flow path is reduced, so the input to the compressor 1 is further reduced.
  • the present disclosure is applicable to air conditioners equipped with water heat exchangers that operate in both cooling and heating modes. Specifically, the present disclosure is applicable to heat source equipment for air conditioning and the like.

Abstract

La présente divulgation porte sur machine de climatisation et de source de chaleur qui abaisse la pression de refoulement d'un compresseur et réduit l'entrée du compresseur pendant un fonctionnement de chauffage en réalisant un contre-courant dans un échangeur de chaleur à eau, qui sert de condenseur pendant le fonctionnement de chauffage et en abaissant la température de condensation d'un fluide frigorigène sans commuter les positions verticales respectives d'un tuyau d'entrée et d'un tuyau de sortie.　Cette machine de climatisation et de source de chaleur est pourvue d'un boîtier (7) entourant un circuit de fluide frigorigène, et d'un ventilateur (10) qui est positionné dans une partie supérieure du boîtier (7) et évacue l'air à l'intérieur du boîtier (7) vers l'extérieur, un échangeur de chaleur à eau (3) étant pourvu d'un passage d'écoulement d'eau à travers lequel l'eau s'écoule de bas en haut, et d'un passage d'écoulement de fluide frigorigène à travers lequel un fluide frigorigène s'écoule de haut en bas pendant le fonctionnement de chauffage, le boîtier (7) étant pourvu d'une sortie (70) reliée à une sortie d'eau (30) de l'échangeur de chaleur à eau (3) par un tuyau de sortie d'eau (72), et d'une entrée (71) reliée à une entrée d'eau (31) de l'échangeur de chaleur (3) par un tuyau d'entrée d'eau (73), et l'entrée (71) étant positionnée au-dessus de la sortie (70).
PCT/JP2022/021981 2021-06-01 2022-05-30 Machine de climatisation et de source de chaleur WO2022255316A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-092332 2021-06-01
JP2021092332A JP2022184464A (ja) 2021-06-01 2021-06-01 空気調和熱源機

Publications (1)

Publication Number Publication Date
WO2022255316A1 true WO2022255316A1 (fr) 2022-12-08

Family

ID=84323197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/021981 WO2022255316A1 (fr) 2021-06-01 2022-05-30 Machine de climatisation et de source de chaleur

Country Status (2)

Country Link
JP (1) JP2022184464A (fr)
WO (1) WO2022255316A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100741871B1 (ko) * 2006-12-12 2007-07-23 황도섭 일체형 멀티방식 공기열원 히트펌프 장치 및 이를 이용한시스템
WO2011099629A1 (fr) * 2010-02-15 2011-08-18 東芝キヤリア株式会社 Unité de refroidissement
JP2014219186A (ja) * 2013-04-12 2014-11-20 ダイキン工業株式会社 チラー装置
WO2018062054A1 (fr) * 2016-09-27 2018-04-05 東芝キヤリア株式会社 Dispositif à cycle de réfrigération

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100741871B1 (ko) * 2006-12-12 2007-07-23 황도섭 일체형 멀티방식 공기열원 히트펌프 장치 및 이를 이용한시스템
WO2011099629A1 (fr) * 2010-02-15 2011-08-18 東芝キヤリア株式会社 Unité de refroidissement
JP2014219186A (ja) * 2013-04-12 2014-11-20 ダイキン工業株式会社 チラー装置
WO2018062054A1 (fr) * 2016-09-27 2018-04-05 東芝キヤリア株式会社 Dispositif à cycle de réfrigération

Also Published As

Publication number Publication date
JP2022184464A (ja) 2022-12-13

Similar Documents

Publication Publication Date Title
US9587867B2 (en) Chiller system and control method thereof
JP4999529B2 (ja) 熱源機および冷凍空調装置
US7984621B2 (en) Air conditioning system for communication equipment and controlling method thereof
JP6644154B2 (ja) 空気調和装置
KR102014466B1 (ko) 칠러유닛 및 이를 포함하는 칠러시스템
CN103221759A (zh) 空调机
JP2009133624A (ja) 冷凍空調装置
WO2014103436A1 (fr) Dispositif de cycle de refroidissement
JP4118254B2 (ja) 冷凍装置
CN105674434A (zh) 冷暖型空调器和单冷型空调器
EP2787314B1 (fr) Échangeur de chaleur à tuyau double et climatiseur l'utilisant
JP3445941B2 (ja) 多段蒸発吸収型の吸収冷温水機及びそれを備えた大温度差空調システム
WO2022255316A1 (fr) Machine de climatisation et de source de chaleur
JP2009162403A (ja) 空気調和機
JP5310904B1 (ja) 空気調和機
JP4522962B2 (ja) 冷凍サイクル装置
WO2018061359A1 (fr) Échangeur de chaleur et dispositif à cycle frigorifique
JP7448848B2 (ja) 空気調和装置
JPH08145490A (ja) ヒートポンプエアコン用熱交換器
JP2005009808A (ja) 空気調和機の熱交換器。
JP7258618B2 (ja) チラーユニット
JPWO2019211893A1 (ja) 熱交換器及び冷凍サイクル装置
JP2009281595A (ja) 冷凍装置
WO2022215204A1 (fr) Climatiseur
WO2023166558A1 (fr) Dispositif de climatisation

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22816063

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE