WO2022255316A1 - Air-conditioning and heat-source machine - Google Patents

Air-conditioning and heat-source machine 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
French (fr)
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/en

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

The present disclosure provides an air-conditioning and heat-source machine that lowers the discharge pressure of a compressor and reduces the input of the compressor during a heating operation by achieving a counterflow in a water heat exchanger, which serves as a condenser during the heating operation and lowering the condensation temperature of a refrigerant without switching the respective vertical positions of an inlet pipe and an outlet pipe.　This air-conditioning and heat-source machine is provided with a housing 7 enclosing a refrigerant circuit, and a fan 10 that is positioned in an upper portion of the housing 7 and exhausts air inside the housing 7 to the outside, wherein a water heat exchanger 3 is provided with a water flow passage through which water flows from down to up, and a refrigerant flow passage through which a refrigerant flows from up to down during the heating operation, the housing 7 is provided with an outlet 70 connected to a water outlet 30 of the water heat exchanger 3 by a water outlet pipe 72, and an inlet 71 connected to a water inlet 31 of the heat exchanger 3 by a water inlet pipe 73, and the inlet 71 is positioned above the outlet 70.

Description

空気調和熱源機Air conditioning heat source machine
　本開示は、冷房と暖房の両方の機能を持つ空気調和機であって、熱媒体として冷水もしくは温水を生成する空気調和熱源機に関する。 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.
　特許文献１の熱源機は水熱交換器を備えており、暖房運転時に、建物等の暖房負荷で低温となった水を筐体の導入口から取り込み、水熱交換器で過熱して温水を生成し、筐体の導出口から建物などの暖房負荷へ送り出す。冷房運転時には温水を導入管から取り込み、冷水を生成して導出口から送り出す。水熱交換器は水流路と冷媒流路の一部を構成し、冷媒流路は、圧縮機と四方弁と空気熱交換器と膨張弁とレシーバタンクと水熱交換器とを備え、これらが環状に接続された冷媒回路を冷媒が循環することで冷凍サイクルを構成している。
　水は熱源機の外部に設置された遠心型ポンプにより建物に圧送される場合がある。遠心型ポンプの吸込口は通常回転軸と同じ高さであり、吐出口は上向きとなっている。よって、特許文献１の熱源機のように水の導出口は、水の導入口よりも低い位置にあるのが一般的である。また、水熱交の出水口が入水口よりも低い位置にあり、水は常に水流路を上から下に向かって流れている。導入口と水熱交の入水口を繋ぐ入水管と、導出口と水熱交の出水口を繋ぐ出水管はほぼ落差がなく水平であり、お互い交わることなく上下関係を維持している。
　冷媒流路の流れ方向は冷暖房の動作モードによって変わり、冷凍サイクルが冷房運転時、すなわち水熱交換器か蒸発器として動作する場合は、液相を多く含む渇き度の低い冷媒が冷媒流路の下部口から流入し、蒸発した気相冷媒が上部口から流出する。冷凍サイクルが暖房運転時、すなわち水熱交換器か凝縮器として動作する場合は、気相冷媒が冷媒流路の上部口から流入し、凝縮した液相冷媒が下部口から流出する。このように動作モードによらず、上部口は気相冷媒、下部口は液相冷媒が流れるため、重力による液相の逆流などの不安定流れが抑えられる。冷房運転時に水熱交換器は対向流となるため、冷媒と水の温度差が対向流の場合と比べて小さく、水熱交換器の入水温度を一定としたときに、水よりも低温である冷媒の蒸発温度が高くなる。これにより、圧縮機の吸入冷媒圧力が高くなるため、少ない動力で運転できる。 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. In addition, 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. During 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. During heating operation, that is, when the refrigerating cycle operates as a water heat exchanger or a condenser, vapor-phase refrigerant flows in from the upper port of the refrigerant channel and condensed liquid-phase refrigerant flows out from the lower port. As described above, regardless of the operation mode, 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. Since 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.
特許第５５５５７０１号公報Japanese Patent No. 5555701
　本開示は、筐体の導入管と導出管の上下を入れ替えることなく、暖房運転時に凝縮器となる水熱交換器を対向流とし、冷媒の凝縮温度を下げることで、圧縮機の吐出圧力を下げ、暖房運転時の圧縮機の入力を低減する空気調和熱源機を提供する。 In the present disclosure, 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. To provide an air-conditioning heat source machine that reduces the input of a compressor during heating operation.
　この明細書には、２０２１年６月１日に出願された日本国特許出願・特願２０２１－０９２３３２号の全ての内容が含まれる。
　本開示における空気調和熱源機は、冷媒を循環させる圧縮機と、四方弁と、空気と冷媒を熱交換させる空気熱交換器と、膨張弁と、水と冷媒の間で熱交換させる水熱交換器を、環状に接続した冷媒回路を備えた空気調和熱源機であって、前記冷媒回路を内包する筐体と、筐体の上部に位置し筐体内の空気を外部に排出するファンと、を備え、前記水熱交換器は、下から上に向かって流れる水流路と、暖房運転時に上から下に向かって流れる冷媒流路と、を備え前記筐体は、前記水熱交換器の出水口と出水管で接続された導出口と、前記水熱交換器の入水口と入水管で接続された導入口と、を備え、前記導入口は導出口より上部に位置していることを特徴とする。 This specification includes all the contents of Japanese Patent Application/Japanese Patent Application No. 2021-092332 filed on June 1, 2021.
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.
　本開示によれば、冷媒回路が暖房運転している場合、圧縮機から吐出された高温気相冷媒が四方弁を経由して、水熱交換器の上部口に流入する。水熱交換器で凝縮した液相冷媒はレシーバタンクに流入する。つまり、水熱交換器の冷媒流路の流れ方向は上から下向きになる。水熱交換器の導出口は導入口より上部に位置しているため、暖房運転時に水熱交換器は対向流となるので、冷媒の凝縮温度が低下して圧縮機の吐出圧力が下がり、暖房運転時の圧縮機の入力を低減することができる。 According to the present disclosure, when the refrigerant circuit is in heating operation, 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. In other words, 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.
図１は、本開示の実施の形態１における暖房運転時の空気調和熱源機の構成図FIG. 1 is a configuration diagram of an air-conditioning heat source device during heating operation according to Embodiment 1 of the present disclosure. 図２は、本開示の実施の形態２における水熱交換器を導入口側から見た図FIG. 2 is a view of the water heat exchanger according to Embodiment 2 of the present disclosure, viewed from the inlet side
　（本開示の基礎となった知見等）
　発明者らが本開示に想到するに至った当時、水熱交換器を備えた空気調和熱源機においては、筐体の導入口が導出口よりも高い位置にある関係であり、水熱交換器の水流路の入水口と出水口の位置は、導入口と導出口の上下関係を維持するように接続していた。 (Knowledge, etc. on which this disclosure is based)
At the time when the inventors came up with the present disclosure, in the air conditioning heat source equipment equipped with a water heat exchanger, the inlet of the housing was at a higher position than the outlet, and the water heat exchanger The positions of the inlet and outlet of the water flow path were connected so as to maintain the vertical relationship between the inlet and the outlet.
　しかしながら、前記構成では、暖房運転時には水熱交換器が並行流となり、水流路と冷媒流路の温度差が増加し、ヒートポンプサイクルの凝縮温度が上昇するため、圧縮機の入力が増大してしまう。導入口と導出口の上下関係を入れ替えると、筺体外部に設置する水循環ポンプとの接続配管が複雑になるという課題を発明者らは発見し、その課題を解決するために、本開示の主題を構成するに至った。
　本開示は、筐体の導入管と導出管の上下を入れ替えることなく、暖房運転時に凝縮器となる水熱交換器を対向流とし、冷媒の凝縮温度を下げることで、圧縮機の吐出圧力を下げ、暖房運転時の圧縮機の入力を低減する空気調和熱源機を提供する。 However, in the above configuration, 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.
In the present disclosure, 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. To provide an air-conditioning heat source machine that reduces the input of a compressor during heating operation.
　以下、図面を参照しながら実施の形態を詳細に説明する。但し、必要以上に詳細な説明は省略する場合がある。例えば、既によく知られた事項の詳細説明、または、実質的に同一の構成に対する重複説明を省略する場合がある。
　なお、添付図面および以下の説明は、当業者が本開示を十分に理解するために提供されるのであって、これらにより特許請求の範囲に記載の主題を限定することを意図していない。 Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters or redundant descriptions of substantially the same configurations may be omitted.
It should be noted that the accompanying drawings and the following description are provided to allow those skilled in the art to fully understand the present disclosure and are not intended to limit the claimed subject matter thereby.
（実施の形態１）
　以下、図１を用いて、実施の形態１について説明する。
　［１－１．構成］
　図１は、本開示の実施の形態１における空気調和熱源機が暖房モードで動作中の構成図を示したものである。本開示を実施するための空気調和熱源機について説明する。
　空調を行う建物９と、熱源機１００と、水ポンプ８とが水配管８０で接続されている。 (Embodiment 1)
Embodiment 1 will be described below with reference to FIG.
[1-1. Constitution]
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 .
　熱源機１００の筺体７は、水配管８０に接続された水の導出口７０と導入口７１とを備えている。導出口７０から水配管８０を介して建物９に水を送るとともに、建物９から戻る水が導入口７１から流入する。
　熱源機１００は、水熱交換器３を備えている。水熱交換器３の出水口３０は、出水管７２を通じて導出口７０に接続されている。水熱交換器３の入水口３１は、入水管７３を通じて導入口７１に接続されている。
　熱源機１００は、圧縮機１と、四方弁２と、水熱交換器３と、レシーバタンク４と、膨張弁５と、空気熱交換器６と、を環状に接続した冷媒回路を構成している。
　熱源機１００は、筐体７の上部に設けられたファン１０を備えている。そして、ファン１０を駆動することにより、筐体７の中の空気が排出されるとともに、筺体７の側面から空気が流入して空気熱交換器６を外気が通過することで、空気熱交換器６により冷媒と空気との熱交換が行われる。 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.
　水熱交換器３の冷媒流路の上部口３２は四方弁２と接続され、水熱交換器３の下部口３３はレシーバタンク４と接続されている。上部口３２は下部口３３より上部に位置している。水熱交換器３の出水口３０は入水口３１より上側に位置している。
　出水管７２は、配管の向きを変える２か所以上の転向部７５を備え、出水管７２のうち、筐体７の導出口７０と同じ高さにある配管長は、水熱交換器３の出水口３０と同じ高さにある配管長よりも長く形成されている。また、入水管７３は、配管の向きを変える２か所以上の転向部７５を備え、入水管７３のうち、水熱交換器３の入水口３１と同じ高さにある配管長が、筐体７の導入口７１と同じ高さにある配管長よりも長く形成されている。 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. - 特許庁In addition, 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.
　［１－２．動作］
　以上のように構成された空気調和機１００について、以下その動作、作用を説明する。
　暖房動作時、四方弁は図１に示すようになっており、圧縮機１により圧縮された高温冷媒が四方弁２を通じて水熱交換器３の上部口３２に流入する。
　冷媒は凝縮しながら水熱交換器３の水流路を流れる水を加熱したのち、下部口３３から液相となって流出し、レシーバタンク４に入る。膨張弁５で膨張し低温になった冷媒は空気熱交換器６で温められ蒸発し、気相冷媒となって圧縮機１に入る。
　水熱交換器３で加熱された水は、水ポンプ８により導出口７０を介して建物９に送られ、空調負荷により冷却される。例えば、５℃温度が下がる。建物９から出た水は、導入口７１を介して再び熱源機１００の水熱交換器３に戻される。 [1-2. motion]
The operation and effects of the air conditioner 100 configured as described above will be described below.
During heating operation, 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 .
　この場合に、暖房モードでの動作時に水熱交換器３の水流路が、図１において上から下に向かって流れる対向流になる。また、出水管７２と入水管７３のうち、ファン１０により誘起される空気流れの流速が遅い筺体７底部に位置する配管長が長くなるため、外気温度よりも高温の水からの熱逃げが抑えられる。
　これにより、水熱交換器３を流れる水の温度が下がり、同じ出水温度時の凝縮温度が下がる。 In this case, 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. Further, of the water outlet pipe 72 and the water inlet pipe 73, 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.
As a result, 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.
　［１－３．効果等］
　以上述べたように、本実施の形態において、冷媒回路を内包する筺体７と、筺体７の上部に位置し筺体７内の空気を外部に排出するファン１０と、を備え、水熱交換器３は、下から上に向かって流れる水流路と、暖房運転時に上から下に向かって流れる冷媒流路と、を備え、筺体７は、水熱交換器３の出水口３０と出水管７２で接続された導出口７０と、水熱交換器３の入水口３１と入水管７３で接続された導入口７１と、を備え、導入口７１は導出口７０より上部に位置している。 [1-3. effects, etc.]
As described above, in the present embodiment, 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 .
　これにより、暖房運転時に水熱交換器３において、冷媒と水とを対向流とすることができる。そのため、水流路と冷媒流路の温度差が小さくなり、冷媒流路の凝縮温度が減少する。その結果として、圧縮機１の吐出温度が下がり、圧縮機１の入力を減少させることができる。 As a result, the refrigerant and water can flow counter-currently in the water heat exchanger 3 during heating operation. As a result, 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. As a result, the discharge temperature of the compressor 1 is lowered, and the input to the compressor 1 can be reduced.
　また、本実施の形態においては、出水管７２のうち、筺体７の導出口７０と同じ高さにある配管長が、水熱交換器３の出水口３０と同じ高さにある配管長よりも長い構成、もしくは、入水管７３のうち、水熱交換器３の入水口３１と同じ高さにある配管長が、筺体７の導入口７１と同じ高さにある配管長よりも長い構成、の少なくともいずれかの構成になっている。 Further, in the present embodiment, 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. A long configuration, or a configuration in which the length of the water inlet pipe 73 at the same height as the water inlet 31 of the water heat exchanger 3 is longer than the length of the pipe at the same height as the inlet 71 of the housing 7. It has at least one configuration.
　これにより、出水管７２と入水管７３のうち、ファン１０により誘起される空気流れの流速が遅い筺体７底部に位置する配管長が長くなるため、外気温度よりも高温の水からの熱逃げを抑えることができる。そのため、冷媒流路の凝縮温度が減少するため、圧縮機１の入力をさらに減少させることができる。 As a result, of the water outlet pipe 72 and the water inlet pipe 73, 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. As a result, the condensing temperature of the refrigerant flow path is reduced, so the input to the compressor 1 can be further reduced.
（実施の形態２）
　次に、図２を用いて、実施の形態２について説明する。
　［２－１．構成］
　図２は、本開示の実施の形態２における空気調和熱源機の水熱交換器３を、導入口７１側から見た図を示したものである。本形態を実施するための空気調和熱源機について説明する。 (Embodiment 2)
Next, Embodiment 2 will be described with reference to FIG.
[2-1. Constitution]
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.
　入水管７３と出水管７２は、それぞれ２つ以下の転向部７５を備えており、導入口７１のある筺体７の側面に投影した時に、導入口７１と入水口３１とを結ぶ直線と、導出口７０と水熱交換器３の出水口３０を結ぶ直線が交差するように構成されている。 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.
　［２－２．作用］
　本実施の形態においては、２か所の転向部７５により、配管を最短経路とすることができるため、効率よく熱逃げを抑えることができる。
　また、入水管７３と出水管７２を投影した線がクロスしているため、筺体７の入水口３１と出水口３０の横方向の水平方向距離Ｃを近づけることができる。
　これにより、筺体７の外部の水配管８０を短く施工できるため、筺体７の外部において配管から外気への熱逃げが抑えることができる。 [2-2. action]
In the present embodiment, the two turning parts 75 allow the piping to be the shortest path, so heat escape can be efficiently suppressed.
In addition, since 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.
As a result, 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.
　［２－３．効果等］
　以上のように、本実施の形態においては、入水管７３と出水管７２とがそれぞれ２つ以下の転向部７５を備え、導入口７１のある筺体７の側面に投影した時に、導入口７１と入水口３１を結ぶ直線と、導出口７０と水熱交換器３の出水口３０とを結ぶ直線が交差している。
　これにより、導出口７０と導入口７１の水平方向距離Ｃを小さくすることができ、コンパクトに配置することができるので、筺体７外部の水配管８０を必要最小限の長さで施工できる。そのため、筺体７の外部の水配管８０からの熱逃げが抑えられる。これにより、冷媒流路の凝縮温度が減少するため、圧縮機１の入力がさらに減少する。 [2-3. effects, etc.]
As described above, in the present embodiment, 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.
As a result, 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. As a result, the condensing temperature of the refrigerant flow path is reduced, so the input to the compressor 1 is further reduced.
　本開示は、冷房と暖房の両モードで動作する水熱交換器を備えた空気調和装置に適用可能である。具体的には、空調用熱源機などに、本開示は適用可能である。 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.
　１　圧縮機
　２　四方弁
　３　水熱交換器
　４　レシーバタンク
　５　膨張弁
　６　空気熱交換器
　７　筐体
　８　水ポンプ
　９　建物
　１０　ファン
　３０　出水口
　３１　入水口
　３２　上部口
　３３　下部口
　７０　導出口
　７１　導入口
　７２　出水管
　７３　入水管
　７５　転向部
　８０　水配管
　１００　熱源機
　Ｃ　導出口と導入口の水平方向距離 1 compressor 2 four-way valve 3 water heat exchanger 4 receiver tank 5 expansion valve 6 air heat exchanger 7 housing 8 water pump 9 building 10 fan 30 water outlet 31 water inlet 32 upper port 33 lower port 70 outlet 71 inlet 72 Outlet pipe 73 Inlet pipe 75 Turning portion 80 Water pipe 100 Heat source machine C Horizontal distance between outlet and inlet

Claims (3)

  1. 　冷媒を循環させる圧縮機と、四方弁と、空気と冷媒を熱交換させる空気熱交換器と、膨張弁と、水と冷媒の間で熱交換させる水熱交換器を、環状に接続した冷媒回路を備えた空気調和熱源機であって、
    　前記冷媒回路を内包する筐体と、前記筐体の上部に位置し前記筐体内の空気を外部に排出するファンと、を備え、
    　前記水熱交換器は、下から上に向かって流れる水流路と、暖房運転時に上から下に向かって流れる冷媒流路と、を備え
    　前記筐体は、前記水熱交換器の出水口と出水管で接続された導出口と、前記水熱交換器の入水口と入水管で接続された導入口と、を備え、
    　前記導入口は前記導出口より上部に位置していることを特徴とする空気調和熱源機。     A refrigerant circuit in which 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 exchanger that exchanges heat between water and refrigerant are connected in a ring. An air conditioning heat source machine comprising
    A housing containing the refrigerant circuit, and a fan located in the upper part of the housing and discharging the air in the housing to the outside,
    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. An outlet connected by a water pipe, and an inlet connected to the water inlet of the water heat exchanger and the water inlet pipe,
    The air-conditioning heat source equipment, wherein the inlet is located above the outlet.
  2. 　前記出水管のうち、前記筐体の前記導出口と同じ高さにある配管長が、前記水熱交換器の前記出水口と同じ高さにある配管長よりも長い構成、
    　もしくは、
    　前記入水管のうち、前記水熱交換器の前記入水口と同じ高さにある配管長が、前記筐体の前記導入口と同じ高さにある配管長よりも長い構成、の少なくともいずれかの構成になっていることを特徴とする請求項１に記載の空気調和熱源機。     A configuration in which the length of the water outlet pipe at the same height as the outlet of the housing is longer than the length of the pipe at the same height as the water outlet of the water heat exchanger,
    or,
    At least one of the configurations in which the length of the water inlet pipe at the same height as the water inlet of the water heat exchanger is longer than the length of the pipe at the same height as the inlet of the housing. The air-conditioning heat source machine according to claim 1, characterized in that it has a configuration.
  3. 　前記入水管と前記出水管とがそれぞれ２つ以下の転向部を備え、
    　前記導入口のある前記筐体の側面に投影した時に、前記導入口と前記入水口を結ぶ直線と、前記導出口と前記水熱交換器の前記出水口とを結ぶ直線が交差していることを特徴とする請求項１または請求項２に記載の空気調和熱源機。     each of the water inlet pipe and the water outlet pipe has two or less turning portions;
    A straight line connecting the inlet and the water inlet and a straight line connecting the outlet and the water outlet of the water heat exchanger intersect when projected onto the side surface of the housing where the inlet is located. The air-conditioning heat source machine according to claim 1 or 2, characterized by:
PCT/JP2022/021981 2021-06-01 2022-05-30 Air-conditioning and heat-source machine WO2022255316A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-092332 2021-06-01
JP2021092332A JP2022184464A (en) 2021-06-01 2021-06-01 Air-conditioning heat source machine

Publications (1)

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

Family

ID=84323197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/021981 WO2022255316A1 (en) 2021-06-01 2022-05-30 Air-conditioning and heat-source machine

Country Status (2)

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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100741871B1 (en) * 2006-12-12 2007-07-23 황도섭 One body multi type heat pump device and thereof using system
WO2011099629A1 (en) * 2010-02-15 2011-08-18 東芝キヤリア株式会社 Chilling unit
JP2014219186A (en) * 2013-04-12 2014-11-20 ダイキン工業株式会社 Chiller device
WO2018062054A1 (en) * 2016-09-27 2018-04-05 東芝キヤリア株式会社 Refrigeration cycle device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100741871B1 (en) * 2006-12-12 2007-07-23 황도섭 One body multi type heat pump device and thereof using system
WO2011099629A1 (en) * 2010-02-15 2011-08-18 東芝キヤリア株式会社 Chilling unit
JP2014219186A (en) * 2013-04-12 2014-11-20 ダイキン工業株式会社 Chiller device
WO2018062054A1 (en) * 2016-09-27 2018-04-05 東芝キヤリア株式会社 Refrigeration cycle device

Also Published As

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

Similar Documents

Publication Publication Date Title
US9587867B2 (en) Chiller system and control method thereof
JP4999529B2 (en) Heat source machine and refrigeration air conditioner
US7984621B2 (en) Air conditioning system for communication equipment and controlling method thereof
JP6644154B2 (en) Air conditioner
KR102014466B1 (en) Ciller unit and Chiller system including the same
CN103221759A (en) Air conditioner
JP2009133624A (en) Refrigerating/air-conditioning device
JP4118254B2 (en) Refrigeration equipment
WO2014103436A1 (en) Refrigeration cycle device
CN105674434A (en) Cooling and heating type air conditioner and cooling-only type air conditioner
EP2787314B1 (en) Double-pipe heat exchanger and air conditioner using same
JP3445941B2 (en) Multi-stage evaporative absorption type absorption chiller / heater and large temperature difference air conditioning system equipped with the same
WO2022255316A1 (en) Air-conditioning and heat-source machine
JP2009162403A (en) Air conditioner
JP5310904B1 (en) Air conditioner
JP4522962B2 (en) Refrigeration cycle equipment
WO2018061359A1 (en) Heat exchanger and refrigeration cycle device
JP7448848B2 (en) air conditioner
JPH08145490A (en) Heat exchanger for heat pump air conditioner
JP2005009808A (en) Heat exchanger for air conditioner
JP7258618B2 (en) chiller unit
JPWO2019211893A1 (en) Heat exchanger and refrigeration cycle equipment
JP2009281595A (en) Refrigerating device
WO2022215204A1 (en) Air conditioner
WO2023166558A1 (en) Air conditioning device

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