WO2007032275A1 - Unité de réception de liquide - Google Patents

Unité de réception de liquide Download PDF

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Publication number
WO2007032275A1
WO2007032275A1 PCT/JP2006/317857 JP2006317857W WO2007032275A1 WO 2007032275 A1 WO2007032275 A1 WO 2007032275A1 JP 2006317857 W JP2006317857 W JP 2006317857W WO 2007032275 A1 WO2007032275 A1 WO 2007032275A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
liquid receiver
pipe
liquid
receiver unit
Prior art date
Application number
PCT/JP2006/317857
Other languages
English (en)
Japanese (ja)
Inventor
Masashi Kuroishi
Hiroki Ishihara
Original Assignee
Daikin Industries, Ltd.
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 Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2007032275A1 publication Critical patent/WO2007032275A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/16—Receivers
    • 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
    • F25B2500/01—Geometry problems, e.g. for reducing size

Definitions

  • the present invention relates to a liquid receiver unit that has a liquid receiver, a fusing plug, and a service port, and is incorporated in a refrigerant circuit of a refrigeration apparatus.
  • Patent Document 1 discloses a refrigeration apparatus that cools the inside of a container used for maritime transportation or the like.
  • This refrigeration apparatus includes a refrigerant circuit to which a compressor, a condenser, an expansion valve, and an evaporator are connected.
  • the refrigerant circulates to perform a vapor compression refrigeration cycle.
  • the refrigerant flowing through the evaporator absorbs heat from the internal air and evaporates to cool the container.
  • the refrigerant circuit of the refrigeration apparatus is also provided with a liquid receiver between the condenser and the expansion valve.
  • This liquid receiver is constituted by a cylindrical airtight container, in which liquid refrigerant that is excessive in the refrigerant circuit is stored.
  • Patent Document 1 Japanese Patent Laid-Open No. 2002-327964
  • the liquid receiver and the peripheral device of the liquid receiver are integrated together before being installed in the refrigeration apparatus. May be configured as an instrument.
  • FIG. 7 shows a configuration example of a conventional liquid receiver unit.
  • the refrigerant inflow pipe (82) is connected to the top of the liquid receiver (81), and the refrigerant outflow pipe (83) is connected to the bottom of the liquid receiver unit (80).
  • the outflow pipe (83) includes a fusing plug (84) to prevent damage to the receiver (81) due to high pressure rise, a plurality of service ports (85,85) for charging refrigerant, a solenoid valve ( 86) and a plurality of branch pipes (87, 87, 87) are attached.
  • these peripheral devices are configured integrally with the receiver (81), so that this receiver unit (80) can be easily installed in the refrigeration system.
  • the liquid receiver (81) may be coated to prevent the surface of the refrigerant pipe from sticking.
  • the surface of the liquid receiver (81) is easily rusted due to the influence of salt in the outdoor air. Therefore, such painting is indispensable.
  • the surface of the liquid receiver (81) is so-called “brush coating” in which a paint is applied to the refrigerant pipe with a brush or the like.
  • brush coating there was a problem that it took time and effort to apply paint to the entire area of the receiver (81) by brush painting.
  • the present invention has been made in view of the strong point, and an object of the present invention is to perform painting work in a liquid receiver unit in which a liquid receiver, a plug, and a service port are connected by a refrigerant pipe.
  • the aim is to ensure the quality of the receiver unit while shortening the length.
  • a first invention includes a tubular liquid receiver (14), a refrigerant pipe (41, 42, 47, 48, 49) connected to the liquid receiver (14), and the refrigerant pipe ( 42) It is assumed that the receiver unit is equipped with a fusing plug (43) and a service port (44, 46) provided in 42) and is incorporated in the refrigerant circuit (10) of the refrigeration apparatus (1).
  • this liquid receiver unit is the open end of the refrigerant pipe (41, 42, 47, 48, 49), The fusing plug (43) and the service port (44,46) 1S Virtual plane parallel to the axis C of the liquid receiver (14) and separated from the axis C of the liquid receiver (14) by a predetermined distance L It is characterized in that it is arranged on the opposite side of the axis C of the liquid receiver (14) with respect to X.
  • the refrigerant pipe (41, 42, 47, 48, 49), the fusing plug (43), and the service port (44, 46) are integrated with the liquid receiver (14).
  • the open end of the refrigerant pipe (41, 42, 47, 48, 49), the plug (43), and the service port (44, 46) are received with respect to the virtual plane X.
  • the plug (43), and the service port (44, 46) are received with respect to the virtual plane X.
  • the liquid receiver (14) is immersed in the coating liquid so that the axial direction of the liquid receiver (14) is in a horizontal state and the liquid level of the coating liquid and the virtual plane coincide with each other,
  • the paint can be attached to the part below the virtual plane of 14).
  • a second invention is the receiver unit of the first invention, wherein the refrigerant pipe (42) is provided with an electromagnetic valve (SV-1), and the electromagnetic valve (SV-1) is , On the same side as the open end of the cooling pipe (41, 42, 47, 48, 49), the plug (43), and the service port (44, 46) with respect to the virtual plane X It is characterized by being arranged.
  • an electromagnetic valve (SV-1) for opening and closing the refrigerant pipe is integrally incorporated.
  • the solenoid valve (SV-1) is virtually the same as the open end of the refrigerant pipe (41, 42, 47, 48, 49), the plug (43), and the service port (44, 46). Since it is placed on the opposite side of the axis C of the liquid receiver (14) with respect to the plane X, the solenoid valve (SV-1) can be used even if the liquid receiver (14) is immersed in the paint liquid up to the virtual plane X. The paint does not adhere to the surface.
  • a third invention is the first invention, wherein the opening end portion of the refrigerant pipe (41, 42, 47, 48, 49) is in the direction parallel to the virtual plane X or opposite to the virtual plane X. It is characterized by facing the side.
  • the open end of the refrigerant pipe (41, 42, 47, 48, 49) is the liquid of the paint liquid. In a direction parallel to the surface or facing upward Become. In other words, when the liquid receiver (14) is immersed, the open end of the refrigerant pipe (41, 42, 47, 48, 49) will not face downward (the liquid level side of the coating liquid). It is possible to prevent the paint splashed when dripping from entering the refrigerant pipe (41, 42, 47, 48, 49) from the open end.
  • the open end of the refrigerant pipe (41, 42, 47, 48, 49), the plug (43), and the service port (with respect to the virtual plane X of the liquid receiver (14)) 44, 46) are arranged on the opposite side of the center C of the receiver (14). For this reason, when the receiver (14) is immersed in the paint, the paint can be prevented from entering the pipe from the open end of the refrigerant pipe (41, 42, 47, 48, 49). It is possible to prevent paint from adhering to the fastening part of the filler plug (43) and service port (44, 46). Therefore, it is possible to reduce the time required for the painting operation of the liquid receiver unit while ensuring the quality of the liquid receiver unit.
  • the electromagnetic valve (SV-1) when the liquid receiver (14) of the liquid receiver unit in which the electromagnetic valve (SV-1) is incorporated, the electromagnetic valve (SV-1) It is possible to prevent the paint from adhering to the surface. Therefore, it is possible to avoid the occurrence of problems in the opening / closing operation of the solenoid valve (SV-1), and to ensure the quality of this liquid receiver unit.
  • FIG. 1 is an external view of a refrigeration apparatus and a container to which a liquid receiver unit of the present embodiment is applied.
  • FIG. 2 is a schematic configuration diagram of the refrigeration apparatus viewed from the front.
  • FIG. 3 is a piping system diagram showing a schematic configuration of a refrigerant circuit of a refrigeration apparatus.
  • FIG. 4 is a perspective view of the liquid receiver unit installed in the container body.
  • FIG. 5 is a plan view of a state in which the receiver unit is viewed from the lower side, or a state in which the receiver unit is immersed in the coating liquid.
  • FIG. 6 is a piping system diagram showing a refrigerant flow during refrigeration operation of the refrigeration apparatus.
  • FIG. 7 is a perspective view of a conventional liquid receiver unit.
  • the liquid receiver unit (40) of the present embodiment is incorporated in the refrigerant circuit (10) of the refrigeration apparatus (1) for cooling the interior of a container used for marine transportation.
  • the refrigeration apparatus (1) is attached to the opening (3) on the front surface of the container body (2) in which stored items are refrigerated and frozen.
  • the refrigeration apparatus (1) includes a flat casing (11) at the front and rear.
  • the inside of the casing (11) is partitioned into a space facing the outside (outside the store) and a space facing the inside of the container body (2) (in the store).
  • the refrigeration apparatus (1) includes a refrigerant circuit (10) that performs a vapor compression refrigeration cycle by circulating refrigerant.
  • the refrigerant circuit (10) is connected to the compressor (12), the condenser (13), the receiver (14), the electronic expansion valve (15), and the evaporator (16). .
  • the compressor (12) is a fixed-capacity scroll compressor in which the rotation speed of the compressor motor is constant.
  • the condenser (13) constitutes a so-called air-cooled condenser that exchanges heat between the outdoor air blown by the outdoor fan (18) and the refrigerant.
  • the liquid receiver (14) is formed of a cylindrical sealed container and stores excess liquid refrigerant in the refrigerant circuit (10).
  • the liquid receiver (14) constitutes a part of a liquid receiver unit (40) described later in detail.
  • the electronic expansion valve (15) is configured such that the opening degree can be adjusted according to the degree of refrigerant superheat of the evaporator (16).
  • the evaporator (16) constitutes a heat exchanger for cooling the inside which exchanges heat between the inside air blown by the inside fan (19) and the refrigerant.
  • the refrigerant circuit (10) also includes double pipe heat exchange (21), ⁇ conomizer heat exchange (22), reheat coil (23), drain pan heater (24), and suction proportional valve (25). Is provided.
  • the double pipe heat exchanger (21) exchanges heat between the refrigerant flowing through the first refrigerant channel (21a) and the refrigerant flowing through the second refrigerant channel (21b).
  • the first refrigerant flow path (21a) has an inflow side connected to the receiver (14), and an outflow side connected to the high pressure side of the economizer heat exchanger (22) via the first solenoid valve (SV-1). Connected to the inflow end of the channel (22a).
  • the second refrigerant flow path (21 b) is connected at its inflow side to the outflow end of the low pressure side flow path (22b) of the economizer heat exchanger (22), and its outflow side is compressed by the compressor (12). It is connected to a path in the middle of refrigerant compression in the mechanism.
  • the economizer heat exchanger (22) exchanges heat between the refrigerant flowing through the high-pressure channel (22a) and the refrigerant flowing through the low-pressure channel (22b).
  • the outflow side of the high-pressure channel (22a) is connected to the electronic expansion valve (15).
  • the inflow side of the low-pressure channel (22b) is connected to the double pipe via the first capillary tube (CT-1) and the second solenoid valve (SV-2). Connect / connect between tube heat exchanger (21) and solenoid valve (SV-1).
  • the reheat coil (23) is installed inside the warehouse and constitutes a reheat heat exchanger for heating the air cooled by the evaporator (16) with a refrigerant.
  • the reheat coil (23) is provided in a reheat pipe (31) having one end connected to the discharge side of the compressor (12) and the other end connected between the electronic expansion valve (15) and the evaporator (16). It has been.
  • the reheat pipe (31) is provided with a third solenoid valve (SV-3) on the inflow side of the reheat coil (23) and a second capillary tube (CT-2) on the outflow side thereof. Yes.
  • the refrigerant discharged from the compressor (12) flows through the reheat coil (23) via the reheat pipe (31).
  • the internal air cooled by the evaporator (16) is heated by the refrigerant flowing in the reheat coil (23).
  • the reheat coil (23) when dehumidifying the internal air by dehydrating the moisture in the internal air with the evaporator (16), heats the internal air that has been cooled too much to reduce the humidity of the internal air. Keep temperature optimal.
  • the refrigerant condensed in the reheat coil (23) is depressurized in the second capillary tube (CT-2) and then flows into the evaporator (16).
  • the drain pan heater (24) is disposed inside a drain pan (not shown) that collects frost and ice blocks that have peeled off the evaporator (16), and heats the ice blocks in the drain pan with a refrigerant. For melting.
  • This drain pan heater (24) has one end connected to the discharge side of the compressor (12) and the other end connected between the electronic expansion valve (15) and the evaporator (16). Is provided.
  • the drain pan heating pipe (32) is provided with a fourth solenoid valve (SV-4) on the inflow side of the drain pan heater (24). When the fourth solenoid valve (SV-4) is opened, the refrigerant discharged from the compressor (12) flows through the drain pan heater (24) via the drain pan heating pipe (32). As a result, the ice blocks collected in the drain pan are heated and melted by the refrigerant flowing in the drain pan heater (32).
  • the suction proportional valve (25) is provided on the suction side of the compressor (12).
  • the suction proportional valve (25) constitutes a flow rate adjusting valve that adjusts the refrigerant circulation amount in the refrigerant circuit (10) by adjusting the amount of refrigerant sucked by the compressor (12). That is, the suction proportional valve (25) adjusts the cooling capacity of the evaporator (16) by adjusting the refrigerant circulation amount according to the opening degree.
  • the refrigerant circuit (10) includes a liquid injection pipe (33), a defrost pipe (34), and a discharge gas bar.
  • a bypass pipe (35) is provided.
  • the liquid injection pipe (33) is a so-called liquid injection pipe that returns the liquid refrigerant flowing out of the liquid receiver (14) to the suction side of the compressor (12).
  • One end of the liquid injection pipe (33) is connected between the double pipe heat exchanger (21) and the second solenoid valve (SV-2), and the other end is connected to the suction side of the compressor (12). ing.
  • the liquid injection pipe (33) is provided with a fifth solenoid valve (SV-5) and a third capillary tube (CT-3).
  • the defrost pipe (34) is a defrost pipe for heating and melting the frost adhering to the evaporator (16) with the refrigerant discharged from the compressor (12).
  • the defrost pipe (34) has one end connected to the suction side of the compressor (12) and the other end connected between the electronic expansion valve (15) and the evaporator (16).
  • the defrost pipe (34) is provided with a sixth solenoid valve (SV-6) that is opened when the defrost operation is performed to defrost the evaporator (16).
  • the discharge gas bypass pipe (35) is used for returning the refrigerant discharged from the compressor (12) to the suction side of the compressor (12) when the cooling capacity of the evaporator (16) becomes excessive. It is piping.
  • the discharge gas bypass pipe (35) also serves as an oil return pipe for returning the refrigeration oil in the refrigerant discharged from the compressor (12) to the suction side of the compressor (12).
  • the discharge gas bypass pipe (35) has one end connected to the drain pan heating pipe (32) and the other end connected to the suction side of the compressor (12).
  • the discharge gas bypass pipe (35) is provided with a seventh solenoid valve (SV-7) that is appropriately opened according to operating conditions.
  • the refrigerant circuit (10) incorporates a liquid receiver unit (40) including the liquid receiver (14) described above.
  • the liquid receiver unit (40) includes the above-described liquid receiver (14), and an inflow pipe (41) and an outflow pipe (42) of the liquid receiver (14). .
  • the inlet pipe (41) is connected to the top of the receiver (14), while the outlet pipe (42) is received by the receiver (14).
  • the inflow pipe (41) is bent from the top of the liquid receiver (14) and extends to the front side of the liquid receiver (14).
  • the outflow pipe (42) extends from the bottom of the liquid receiver (14) to the front side of the liquid receiver (14), and then curves to the back so as to be bent in a V shape. ing. Thereafter, the outflow pipe (42) extends in parallel and upward with the liquid receiver (14), then bends further forward, and then extends downward in parallel with the liquid receiver (14). Further, the subsequent outflow pipe (42) extends rightward in FIG. 4 and is bent upward again at the front side of the liquid receiver (14).
  • the outflow pipe (42) includes, in order from the upstream side to the downstream side, the fusing plug (43), the first service port (44), the filter (45), and the double pipe heat exchanger ( 21), the first solenoid valve (SV-1), and the second service port (46) are provided.
  • the fusing plug (43) melts itself and discharges the refrigerant to the outside of the refrigerant circuit (10).
  • (14) Prevents accidental damage to refrigerant piping.
  • the first and second service ports (44, 46) constitute a refrigerant charging port in the refrigerant circuit (10), and nut lids (44a, 46a) are fastened to end portions thereof.
  • the filter (45) is housed in a pipe whose diameter has been expanded in the outflow pipe (42), and removes foreign substances and the like in the refrigerant.
  • the double pipe heat exchanger (21) includes an inflow side pipe (47) of the second refrigerant flow path (21b) and an outflow side pipe (47) of the second refrigerant flow path (21b). 48) is connected.
  • the low pressure side flow path (of the economizer heat exchanger (22) (see FIG. 1) between the double pipe heat exchanger (21) and the first solenoid valve (SV-1). 22b)
  • the branch pipe (49) connected to the side is connected!
  • the receiver unit (40) having the above-described configuration includes the open end (41a) of the inflow pipe (41), the open end (42a) of the outflow pipe (42), and the inflow side pipe (47).
  • the open end (47a), the open end (48a) of the outflow side pipe (48), and the open end (49a) of the branch pipe (49) are connected to the corresponding refrigerant pipes.
  • the refrigerant circuit (10) described above is configured (see FIG. 3).
  • each peripheral device connected to the liquid receiver (14) is arranged on the same side with respect to the liquid receiver (14). ing. Specifically, as shown in FIG. 5, a virtual plane X parallel to the axis C of the liquid receiver (14) and separated from the axis C of the liquid receiver (14) by a predetermined distance L is used as a reference.
  • the inflow pipe (41), the outflow pipe (42), the inflow side pipe (47), the outflow side pipe (48), and the open end of the branch pipe (49) (41a, 42 a, 47a , 48a, 49a) are opposite to the axis C of the receiver (14) with respect to the virtual plane X, that is, in FIG. It is placed above the virtual plane X.
  • each refrigerant pipe 41, 42, 47, 48, 49.
  • the parts (41a, 42a, 47a, 48a, 49a) are respectively positioned closer to the front side of the casing (11). For this reason, the pipe connection work of each refrigerant pipe (41, 42, 47, 48, 49) becomes relatively easy.
  • the fusing plug (43), the first service port (44), the second service port (46), and the first solenoid valve (SV-1) also receive the liquid with respect to the virtual plane X. It is arranged on the opposite side to the axis C of (14).
  • these peripheral devices (43, 44, 46, SV-1) are respectively connected to the casing (11 It will be located in front of). This makes it relatively easy to replace the melt plug (43) and to fill the refrigerant with the service port (44, 46) force.
  • the open end (41a) of the inflow pipe (41) faces away from the virtual plane X (upper side in FIG. 5), while the remaining refrigerant pipes (42, 47). , 48, 49) each open end (42a, 47a, 48a, 49a) faces in a direction parallel to the virtual plane X (paper surface direction in FIG. 5).
  • the surface of the receiver unit (40) becomes glazed with long-term use. ⁇ ⁇ ⁇ may end up.
  • the outdoor air is likely to contain salt, so that corrosion of the surface of the receiver unit (40) is promoted. Therefore, the liquid receiver unit (40) of the present embodiment is subjected to surface coating at a stage before being incorporated into the refrigerant circuit (10).
  • the receiver (14) is immersed in the coating liquid. Loose dowel immersion is performed. As shown in FIG. 5, when dripping, the axis C of the liquid receiver (14) is parallel to the liquid surface of the coating liquid, and the liquid is received from the lower side of the virtual plane X (the liquid receiver side). Immerse the liquid container (14) in the paint liquid so that the virtual plane X and the liquid level of the paint liquid match. In this state, when the liquid receiver unit (40) is pulled up from the coating liquid, the paint adheres to the lower part of the virtual plane X in the liquid receiver (14).
  • each refrigerant pipe (41, 4 2, 47, 48, 49) and peripheral devices (43, 44, 46, SV) -1) is located above the imaginary plane X, so the coating liquid can be applied to each open end (41a, 42a, 47a, 48a, 49a) and peripheral devices (43, 44, 46, SV). -1) will not adhere.
  • the open end (41a) of the inflow pipe (41) is directed to the opposite side of the coating liquid surface, and the open end of the remaining pipes (42, 47, 48, 49).
  • (42a, 47a, 48a, 49a) faces in a direction parallel to the paint liquid surface, so that the scattered paint does not adhere to the piping (41, 42, 47, 48, 49). Is done.
  • the necessary part of the receiver unit (40) is painted by brush painting.
  • This brush coating is mainly applied to the outer peripheral surface of each refrigerant pipe.
  • the plug (43) or the nut lid (44a, 46a) of each service port (44, 46) the plug (43) can be replaced or each nut lid (44a, 46a) can be removed. Since it becomes difficult, brush painting is not performed on these parts.
  • the refrigeration apparatus (1) can be refrigerated for refrigerated storage in the container body (2) and refrigeration for freezing these storage.
  • the refrigeration operation of the refrigeration apparatus (1) will be described with reference to FIG.
  • the compressor (12), the external fan (18), and the internal fan (19) are operated, and the opening degree of the electronic expansion valve (15) and the suction proportional valve (25) is set appropriately. Adjusted.
  • the first solenoid valve (SV-1) and the second solenoid valve (SV-2) are opened at the same time as the sixth solenoid valve (SV-6) is closed.
  • the solenoid valves (SV-3, SV-4, SV-5, SV-7) are opened and closed appropriately according to the operating conditions.
  • the discharged refrigerant compressed by the compressor (12) first flows into the condenser (13). In the condenser (13), the refrigerant dissipates heat to the outdoor air and condenses. Thereafter, the refrigerant passes through the liquid receiver (14) and then flows into the first refrigerant flow path (21a) of the double pipe heat exchanger (21). Double tube heat exchanger (21 ), The refrigerant flowing through the first refrigerant flow path (21a) dissipates heat to the refrigerant flowing through the second refrigerant flow path (21b) described later and is cooled. That is, in the double pipe heat exchanger (21), the refrigerant flowing through the first refrigerant channel (21a) is supercooled.
  • CT first capillary tube
  • the refrigerant flowing through the high-pressure channel (22a) is cooled by releasing heat into the refrigerant flowing through the low-pressure channel (22b). That is, in the economizer heat exchanger (22), the refrigerant flowing through the high pressure side flow path (22a) is further subcooled.
  • the refrigerant flowing out of the low pressure side flow path (22b) evaporates in the second refrigerant flow path (21b) of the double pipe heat exchanger (21) described above, and then is compressed in the compression mechanism of the compressor (12). Returned to the route.
  • the stopper (43), service port (44, 46), and electromagnetic valve (SV-1) are arranged on the opposite side of the axis C of the liquid receiver (14). For this reason, the receiver (14) can be immersed in the paint to allow the paint to adhere to the periphery of the receiver (14) in a short time, while each refrigerant pipe (41, 42, 47, 48, 49 ) Can be prevented from entering the refrigerant pipe from the open end (41a, 42a, 47a, 48a, 49a).
  • the open ends (41a, 42a, 47a, 48a, 49a) of the refrigerant pipes (41, 42, 47, 48, 49) are opposite to the virtual plane X, or since the facing virtual plane parallel to the direction, when Dobo pickled liquid receiver (14), each open end is scattered paint (41a, 42 a, 47a, 48 a, 49a) force refrigerant pipe It is possible to more surely prevent entering into the interior. Therefore, the quality of the receiver unit (40) can be ensured more reliably.
  • the present invention is useful for a liquid receiver unit that has a liquid receiver, a fusing plug, and a service port and is incorporated in a refrigerant circuit of a refrigeration apparatus.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

La présente invention concerne une unité de réception de liquide (40) qui comprend un récepteur de liquide (14), une tuyauterie de réfrigérant (41, 42, 47, 48, 49), un bouchon (43), des orifices de service (44, 46) et une électrovanne (SV-1). Les extrémités ouvertes (41a, 42a, 47a, 48a, 49a) de la tuyauterie de réfrigérant (41, 42, 47, 48, 49), le bouchon (43), les orifices de service (44, 46) et l’électrovanne (SV-1) sont disposés sur le côté opposé de l’axe central (C) du récepteur de liquide (14) en un plan virtuel (X) disposé parallèlement à l’axe central (C) du récepteur de liquide (14) et séparé par une distance prédéterminée (L) de l’axe central (C) de sorte que les appareils disposés en périphérie ne se trouvent pas immergés dans la peinture lorsque le récepteur de liquide (14) est immergé dans la peinture.
PCT/JP2006/317857 2005-09-13 2006-09-08 Unité de réception de liquide WO2007032275A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005265846A JP3928651B2 (ja) 2005-09-13 2005-09-13 受液器ユニットの製造方法
JP2005-265846 2005-09-13

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WO2007032275A1 true WO2007032275A1 (fr) 2007-03-22

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PCT/JP2006/317857 WO2007032275A1 (fr) 2005-09-13 2006-09-08 Unité de réception de liquide

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Publication number Priority date Publication date Assignee Title
US10962264B2 (en) * 2017-12-28 2021-03-30 Daikin Industries, Ltd. Heat source unit for refrigeration apparatus

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JP7479902B2 (ja) 2020-03-31 2024-05-09 高砂熱学工業株式会社 冷熱供給システムの冷媒充填方法及び冷媒充填システム

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JPH0532665B2 (fr) * 1985-02-25 1993-05-17 Nippon Denso Co
JPH06137726A (ja) * 1991-05-31 1994-05-20 Suzuki Motor Corp 自動車用空調装置の高低圧スイッチと溶栓の取付配置
JP2005156094A (ja) * 2003-11-28 2005-06-16 Jfe Engineering Kk 液戻し装置および冷熱生成システム

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JPH0532665B2 (fr) * 1985-02-25 1993-05-17 Nippon Denso Co
JPH06137726A (ja) * 1991-05-31 1994-05-20 Suzuki Motor Corp 自動車用空調装置の高低圧スイッチと溶栓の取付配置
JP2005156094A (ja) * 2003-11-28 2005-06-16 Jfe Engineering Kk 液戻し装置および冷熱生成システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10962264B2 (en) * 2017-12-28 2021-03-30 Daikin Industries, Ltd. Heat source unit for refrigeration apparatus

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