WO2005095868A1 - Dispositif de conditionnement d'humidité - Google Patents

Dispositif de conditionnement d'humidité Download PDF

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Publication number
WO2005095868A1
WO2005095868A1 PCT/JP2005/005965 JP2005005965W WO2005095868A1 WO 2005095868 A1 WO2005095868 A1 WO 2005095868A1 JP 2005005965 W JP2005005965 W JP 2005005965W WO 2005095868 A1 WO2005095868 A1 WO 2005095868A1
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WO
WIPO (PCT)
Prior art keywords
valve
refrigerant
switching
compressor
differential pressure
Prior art date
Application number
PCT/JP2005/005965
Other languages
English (en)
Japanese (ja)
Inventor
Nobuki Matsui
Satoshi Ishida
Tomohiro Yabu
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 WO2005095868A1 publication Critical patent/WO2005095868A1/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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1429—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant alternatively operating a heat exchanger in an absorbing/adsorbing mode and a heat exchanger in a regeneration mode

Definitions

  • the present invention relates to a humidity control apparatus for controlling humidity using an adsorbent, and more particularly to a humidity control apparatus having a refrigerant circuit of a vapor compression refrigeration cycle.
  • a humidity control apparatus using an adsorbent is configured to dehumidify or humidify air by utilizing an adsorbing action and a desorbing action of moisture by the adsorbent.
  • the humidity controller When the amount of water adsorbed by the adsorbent reaches a saturation range, it is necessary for the humidity controller to desorb water and regenerate the water.
  • the adsorption and the regeneration are simply performed alternately, the dehumidification and the regeneration can be performed only intermittently.
  • the regenerating operation is performed between the suction operation and the next suction operation. Therefore, in order to perform the suction operation in a short time, it is necessary to heat the suction member. For this reason, in the humidity control apparatus, the adsorption member is heated by the heat of the refrigerant using the refrigerant circuit of the vapor compression refrigeration cycle.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-028458
  • the condenser of the refrigerant circuit and the adsorbing member are integrated.
  • the configuration is such that the adsorbent is carried on the fins of the condenser.
  • suction using two suction members In order to perform the same operation as switching between the side and the regeneration side alternately, the two heat exchangers of the refrigerant circuit may each be one carrying an adsorbent. This allows efficient operation by switching the circulation direction of the refrigerant in the refrigerant circuit while using heat exchange as the evaporator on the adsorption side and heat exchange as the condenser on the regeneration side. .
  • a four-way switching valve is generally used to switch the direction of circulation of the refrigerant in the refrigerant circuit.
  • the frequency of switching the four-way switching valve is much higher than when the air conditioning device switches between cooling and heating and the refrigeration device performs reverse cycle defrosting operation (for example, Switching may be required every few minutes).
  • the four-way switching valve is switched, a relatively loud noise is generated in the four-way switching valve or the pipe as the refrigerant flows from the high pressure side to the low pressure side.
  • the switching frequency increases, the frequency of sound generation also increases, and driving noise becomes a major problem.
  • the present invention has been made in view of the above point, and has as its object to avoid the problem of noise when switching the refrigerant circulation direction.
  • the first invention comprises a compressor (63), a switching mechanism (64), a first heat exchange (61), an expansion mechanism (65), and a second heat exchange.
  • a refrigerant circuit (60) for performing a vapor compression refrigeration cycle.
  • the refrigerant circuit (60) is connected to the first heat exchanger (61) and the second heat exchanger (62). It is intended for a humidity control device whose surface carries an adsorbent that adsorbs and desorbs moisture. Then, in order to alternately adsorb and desorb moisture in the first heat exchanger (61) and the second heat exchanger (62), the cut-out structure (64) is switched to change the refrigerant circuit (60).
  • a circulation switching means (71) for switching the circulation direction of the refrigerant is provided.
  • a differential pressure reducing means (80) for reducing the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) is provided.
  • the differential pressure reducing means (80) is a compressor.
  • (63) is configured to stop.
  • the compressor (63) is configured to have a variable capacity, and the differential pressure reducing means (80) reduces the operating capacity of the compressor (63). Configured to reduce It is.
  • the expansion mechanism (65) is constituted by an expansion valve having a variable opening, and the differential pressure reducing means (80) controls the opening of the expansion valve. It is configured to open.
  • the differential pressure reducing means (80) includes a bypass passage (81) that bypasses the expansion mechanism (65) and a bypass passage (81). And a normally closed bypass valve ( 82 ) provided so that the bypass valve (82) is opened before the circulation switching of the circulation switching means (71).
  • the differential pressure reducing means (80) includes a bypass passage (81) connecting the discharge side and the suction side of the compressor (63), A normally closed bypass valve (82) provided in the bypass passage (81), and configured to open the bypass valve (82) before the circulation switching of the circulation switching means (71).
  • a flow rate adjusting mechanism (83) provided in the pressure difference reducing means (80) force bypass path (81).
  • the differential pressure reducing means (80) is connected to a compressor (63) and has a gas pipe (6b, 6c) through which a gas refrigerant always flows.
  • a normally open / close valve (85) provided in the air conditioner is configured to close the on / off valve (85) before the circulation switching of the circulation switching means (71).
  • the switching mechanism (64) switches the direction of circulation of the refrigerant, and the continuous operation of the dehumidification and the humidification is performed.
  • the differential pressure reducing means (80) switches the cutting configuration (64) of the circulation switching means (71)
  • the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) is reduced.
  • the operation of the refrigerant flowing instantaneously from the high pressure side to the low pressure side is suppressed.
  • the compressor (63) is stopped for a predetermined time before the differential pressure reducing means (80) switches the switching mechanism (64) of the circulation switching means (71). After the switching of the switching mechanism (64), the operation of the compressor (63) is restarted.
  • the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) is reduced.
  • the capacity of the compressor (63) is reduced, and After switching to (64), return the capacity of compressor (63).
  • the pressure difference between the high pressure side and the low pressure side of the refrigerant circuit (60) is reduced by reducing the capacity of the compressor (63) by the differential pressure reducing means (80).
  • the switching mechanism (65) increases the opening of the expansion valve (65). After switching of 64), return the opening of the expansion valve (65).
  • the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) is reduced by increasing the degree of opening of the expansion valve (65) by the differential pressure reducing means (80).
  • the bypass valve (82) is opened and switched off. After switching the configuration (64), close the binos valve (82). The differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) is reduced by the opening of the bypass valve (82) by the differential pressure reducing means (80).
  • the amount of refrigerant flowing through the bypass path (81) is adjusted by the flow rate adjusting mechanism (83), and the noise generated by the refrigerant when the bypass valve (82) is switched is suppressed.
  • the on-off valve (85) is closed and the switching mechanism (64) is closed. After switching, open and close valve (85).
  • the on-off valve (85) By closing the on-off valve (85) by the differential pressure reducing means (80), the amount of circulating refrigerant is reduced, and the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) is reduced.
  • the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) is reduced before switching the refrigerant circulation, so that the refrigerant instantaneously moves from the high pressure side to the low pressure side.
  • the operation of flowing the fluid does not occur, and the noise generated by the refrigerant can be prevented.
  • the sound of the refrigerant does not matter even if the switching frequency is high.
  • the compressor (63) is stopped before the switching of the switching mechanism (64).
  • the pressure difference between the high-pressure side and the low-pressure side of the refrigerant circuit (60) can be reliably reduced, so that the generation of refrigerant at the time of switching can be reliably prevented.
  • the flow rate adjusting mechanism (83) is provided in the bypass passage (81), so that the refrigerant gas bypass valve (82) is opened when the bypass valve (82) is opened. It is possible to suppress the operation in which the high-pressure-side force also momentarily flows to the low-pressure side. The sound generated by the refrigerant due to the opening of the bypass valve (82) is suppressed.
  • FIG. 1 is a circuit diagram showing a refrigerant circuit of the humidity control apparatus of the first embodiment.
  • FIG. 2 is a schematic configuration diagram showing a humidity control apparatus of Embodiment 1.
  • FIG. 3 is a perspective view showing an adsorption heat exchanger of the first embodiment.
  • FIG. 4 is a schematic configuration diagram of a humidity control apparatus showing a flow of air in a first operation of the dehumidifying operation of the first embodiment.
  • FIG. 5 is a schematic configuration diagram of a humidity control apparatus showing an air flow in a second operation of the dehumidifying operation of the first embodiment.
  • FIG. 6 is a schematic configuration diagram of a humidity control apparatus showing an air flow in a first operation of the humidification operation of the first embodiment.
  • FIG. 7 is a schematic configuration diagram of a humidity control apparatus showing an air flow in a second operation of the humidification operation of the first embodiment.
  • FIG. 8 is a circuit diagram showing a refrigerant circuit of a humidity control apparatus according to a fourth embodiment.
  • FIG. 9 is a circuit diagram showing a refrigerant circuit of a humidity control apparatus according to a fifth embodiment.
  • FIG. 10 is a circuit diagram showing a refrigerant circuit of a humidity control apparatus according to a sixth embodiment.
  • Second adsorption heat exchanger (second heat exchanger) 64
  • switching mechanism switching mechanism
  • the humidity control apparatus (10) of the present embodiment performs dehumidification and humidification of room air, and includes a flat hollow rectangular parallelepiped casing (11).
  • the casing (11) houses a refrigerant circuit (60) and the like, and the refrigerant circuit (60) includes the first adsorption heat exchanger (61) and the second adsorption heat exchanger (62), Equipped with a compressor (63)!
  • each of the first adsorption heat exchanger (61) and the second adsorption heat exchanger (62) is a cross-fin type fin “and” tube type heat exchanger.
  • the first heat exchanger and the second heat exchanger are configured.
  • the first adsorption heat exchanger (61) and the second adsorption heat exchanger (62) are composed of a number of aluminum fins (6a) formed in a rectangular plate shape, and a copper piercing through the fins (6a). And a heat transfer tube (6b).
  • An adsorbent such as zeolite is supported on the outer surface of the fin (6a).
  • the first adsorption heat exchanger (61) forms a first adsorption member
  • the second adsorption heat exchanger (62) forms a second adsorption member.
  • the lower side is the front side of the casing (11), and the upper side is the rear side of the casing (11).
  • “right”, “left”, “upper”, and “lower” indicate Means in plane.
  • the casing (11) is formed in a flat box shape having a substantially square shape in plan view.
  • the left side plate (12) and the right side plate (13), and the front plate (14) and the rear plate (15) are located in the thickness direction of the casing (11), and are mutually separated. It constitutes two opposing end faces.
  • the left side plate (12) has an outdoor air intake (21) formed near the back plate (15), and an indoor air intake (22) formed near the front plate (14).
  • an exhaust outlet (23) is formed near the back plate (15), and an air supply outlet (24) is formed near the front plate (14).
  • the outdoor air inlet (21) and the indoor air inlet (22) constitute an air inlet
  • the exhaust outlet (23) and the supply air outlet (24) constitute an air outlet. ing.
  • a first partition plate (31) is provided upright toward the right side plate (13) from the center in the left-right direction.
  • the inner space (16) of the casing (11) is divided into right and left by a first partition (31).
  • the right side of the first partition plate (31) becomes the first space (17), and the left side of the first partition plate (31) becomes the second space (18).
  • the first space (17) of the casing (11) is divided into a front space and a back space by a seventh partition plate (37).
  • the compressor (63) and the exhaust fan (26) of the refrigerant circuit (60) are arranged in a space on the back side of the first space (17).
  • an expansion valve (65) and a four-way switching valve (64) of the refrigerant circuit (60) are also arranged in the space on the rear side (not shown).
  • an air supply fan (25) is arranged in a space on the front side in the first space (17).
  • the exhaust fan (26) is connected to an exhaust outlet (23), and the air supply fan (25) is connected to an air outlet (24).
  • a second partition (32), a third partition (33), and a sixth partition (36) are provided in the second space (18) of the casing (11).
  • the second partition plate (32) is set up near the front plate (14), and the third partition plate (33) is set up near the rear plate (15).
  • the second space (18) is partitioned into three spaces by a second partition plate (32) and a third partition plate (33) with a frontal force and a rearward force.
  • the sixth partition plate (36) is provided in a space between the second partition plate (32) and the third partition plate (33).
  • the sixth partition (36) is provided upright at the center in the left-right direction of the second space (18).
  • the space sandwiched between the second partition plate (32) and the third partition plate (33) is partitioned left and right by a sixth partition plate (36).
  • the space on the right side constitutes a first heat exchange chamber (41), in which the first adsorption heat exchanger (61) is arranged.
  • the space on the left side constitutes a second heat exchange chamber (42), in which the second adsorption heat exchange (62) is arranged. That is, the first heat exchange chamber (41) and the second heat exchange chamber (42) are arranged adjacent to each other.
  • the first heat exchange chamber (41) forms a first processing space
  • the second heat exchange chamber (42) forms a second processing space.
  • a fifth partition plate (35) is provided in the space between the third partition plate (33) and the rear plate (15) of the casing (11) in the second space (18).
  • the fifth partition plate (35) is provided so as to cross the center in the height direction of the space, and partitions the space up and down (see FIG. 2 (A)).
  • the space above the fifth partition plate (35) forms a first inflow channel (43), and the space below the fifth partition plate (35) forms a first outflow channel (44).
  • the first inflow path (43) communicates with the outdoor air suction port (21), and the first outflow path (44) communicates with the exhaust air outlet (23) via the exhaust fan (26).
  • a fourth partition (34) is provided in the space between the second partition (32) and the front plate (14) of the casing (11) in the second space (18).
  • the fourth partition plate (34) is provided so as to cross the center in the height direction of the space, and partitions the space up and down (see FIG. 2 (C)).
  • the space above the fourth partition plate (34) forms a second inflow channel (45), and the space below the fourth partition plate (34) forms a second outflow channel (46).
  • the second inflow path (45) communicates with the indoor air suction port (22), and the second outflow path (46) communicates with the air supply outlet (24) via the air supply fan (25). I have.
  • the first inflow path (43) and the first outflow path (44) are connected to the first heat exchange chamber (41) and the second heat exchange chamber (42) by the first heat exchange chamber (42). They are arranged so as to overlap along the third partition plate (33) as a side surface.
  • the second inflow path (45) and the second outflow path (46) face the third partition (33) of the first heat exchange chamber (41) and the second heat exchange chamber (42). They are arranged so as to overlap along a second partition plate (32) as a second side surface.
  • the first inflow path (43) and the second inflow path (45) constitute an inflow path
  • the first outflow path (44) and the second outflow path (46) constitute an outflow path. .
  • openings (51 to 54) are formed in the third partition plate (33) (see Fig. 2 (A)). O
  • the four openings (51 to 54) are arranged in a matrix direction. Are located in close proximity to each other, that is, two squares are arranged vertically and horizontally.
  • the first opening (51) connects the first inflow path (43) to the first heat exchange chamber (41), and the second opening (52) connects the first inflow path (43) to the first inflow path (43). 2 It communicates with the heat exchange chamber (42).
  • the third opening (53) connects the first outflow passage (44) to the first heat exchange chamber (41), and the fourth opening (54) connects the first outflow passage (44) to the first outflow passage (44). 2 Communicates with the heat exchange chamber (42).
  • openings (55 to 58) are formed in the second partition plate (32) (see FIG. 2C). O
  • the four openings (55 to 58) are arranged in a matrix direction. Are located in close proximity to each other, that is, two squares are arranged vertically and horizontally.
  • the fifth opening (55) communicates the second inflow path (45) with the first heat exchange chamber (41), and the sixth opening (56) communicates with the second inflow path (45). 2 It communicates with the heat exchange chamber (42).
  • the seventh opening (57) connects the second outflow passage (46) with the first heat exchange chamber (41), and the eighth opening (58) connects the second outflow passage (46) with the second outflow passage (46). 2 Communicates with the heat exchange chamber (42).
  • dampers (71 to 78) configured as opening / closing means for opening and closing each of the eight openings (51 to 58) to switch between air flow and shutoff are provided. That is, these dampers (71 to 78) are provided with the second partition plate (partition) (partition) between each inflow path (43, 45) and each outflow path (44, 46) and each heat exchange chamber (41, 42). 32) and the third partition plate (33).
  • a first damper (71) and a second damper (72) are provided in the first opening (51) and the second opening (52), respectively.
  • Two dampers (72) are arranged adjacent to each other.
  • the third opening (53) and the fourth opening (54) are provided with a third damper (73) and a fourth damper (74), and the third damper (73) and the fourth damper (74) are mutually connected. They are located next to each other.
  • the fifth opening (55) and the sixth opening (56) are provided with a fifth damper (75) and a sixth damper (76), and the fifth damper (75) and the sixth damper (76) are mutually connected. They are located next to each other.
  • the seventh opening (57) and the eighth opening (58) are provided with a seventh damper (77) and an eighth damper (78), and the seventh damper (77) and the eighth damper (78) are mutually connected. They are located next to each other.
  • the refrigerant circuit (60) will be described with reference to FIG.
  • the refrigerant circuit (60) includes a compressor (63), a four-way switching valve (64), a first adsorption heat exchange (61), an expansion valve (65), and a second adsorption heat exchange (62). They are sequentially connected by a refrigerant pipe (6c) to form a closed circuit.
  • the refrigerant circuit (60) is configured such that the charged refrigerant circulates to perform a vapor compression refrigeration cycle.
  • the four-way switching valve (64) constitutes a switching mechanism for switching the circulation direction of the refrigerant in the refrigerant circuit (60). Specifically, a discharge pipe (6d) of a compressor (63) is connected to a first port of the four-way switching valve (64), and a suction pipe of the compressor (63) is connected to a second port. (6e) is connected. One end of the first adsorption heat exchange (61) is connected to the third port of the four-way switching valve (64), and one end of the second adsorption heat exchange (62) is connected to the fourth port. Is connected. In the refrigerant circuit (60), the circulation of the refrigerant is reversible by the four-way switching valve (64).
  • the expansion valve (65) constitutes an expansion mechanism for expanding the refrigerant.
  • the refrigerant circuit (60) includes an adsorbent generated when water in the air is adsorbed by the adsorbent in the second adsorption heat exchange (62) or the first adsorption heat exchanger (61) serving as an evaporator.
  • the refrigerant absorbs heat.
  • the refrigerant heats the adsorbent and removes moisture from the adsorbent.
  • the refrigerant circuit (60) is configured to perform the adsorption and desorption of moisture in the first adsorption heat exchanger (61) or the second adsorption heat exchanger (62) with the first adsorption heat exchange (61).
  • the second adsorption heat exchange (62) is performed alternately to continuously dehumidify or humidify the air.
  • the refrigerant circuit (60) is controlled by a controller (70).
  • the controller (70) is provided with circulation switching means (71) and differential pressure reducing means (80).
  • the differential pressure reducing means (80) is provided before the circulation switching of the circulation switching means (71), that is, Before switching the four-way switching valve (64), the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) is reduced.
  • the differential pressure reducing means (80) is configured to stop the compressor (63), and before the four-way switching valve (64) of the circulation switching means (71) switches the compressor (63). ) Is stopped for a predetermined time, and after the four-way switching valve (64) is switched, the operation of the compressor (63) is restarted.
  • the first air that has flowed in from the outdoor air suction port (21) is sent from the first inflow path (43) to the second heat exchange chamber (42) through the second opening (52).
  • the first air passes upward through the second adsorption heat exchanger (62).
  • the second adsorption heat exchange (62) moisture in the first air is adsorbed on the adsorbent carried on the outer surface. The heat of adsorption generated at that time is absorbed by the refrigerant.
  • the first air dehumidified by the second adsorption heat exchanger (62) flows out of the second heat exchange chamber (42) through the eighth opening (58) to the second outflow path (46). Thereafter, the first air is sucked into the air supply fan (25), and is supplied from the air supply outlet (24) to the room as supply air (SA).
  • the refrigerant discharged from the compressor (63) is condensed by releasing heat in the second adsorption heat exchanger (62), and then sent to the expansion valve (65) to be decompressed.
  • the decompressed refrigerant absorbs heat in the first adsorption heat exchange (61), evaporates, and is then sucked into the compressor (63) and compressed. Then, the compressed refrigerant is discharged again from the compressor (63).
  • the second air to which water has been imparted by the second adsorption heat exchanger (62) flows out to the first outflow path (44) through the second heat exchange chamber (42) and the fourth opening (54). Thereafter, the second air is sucked into the exhaust fan (26), and is discharged from the exhaust air outlet (23) to the outside as exhaust air (EA).
  • the first air that has flowed in from the outdoor air suction port (21) is sent from the first inflow path (43) to the first heat exchange chamber (41) through the first opening (51).
  • the first air passes upward through the first adsorption heat exchanger (61).
  • the first adsorption heat exchange (61) moisture in the first air is adsorbed on the adsorbent carried on the outer surface. The heat of adsorption generated at that time is absorbed by the refrigerant.
  • the first air dehumidified by the first adsorption heat exchanger (61) flows out of the first heat exchange chamber (41) through the seventh opening (57) to the second outflow passage (46). Thereafter, the first air is sucked into the air supply fan (25), and is supplied from the air supply outlet (24) to the room as supply air (SA).
  • SA supply air
  • the dampers (71-78) of the openings (51-58), the first opening (51), the fourth opening (54), and the sixth opening (56) are switched.
  • the seventh opening (57) are in an open state
  • the second opening (52), the third opening (53), the fifth opening (55), and the eighth opening (58) are in a closed state.
  • outdoor air (OA) as the second air is supplied to the first adsorption heat exchanger (61), and the second adsorption heat exchanger (62) is supplied as the first air.
  • Room air (RA) is supplied.
  • the first air flowing from the indoor air suction port (22) flows from the second inflow path (45) to the second heat exchange chamber (42) through the sixth opening (56). Sent in.
  • the first air passes through the second adsorption heat exchange (62) downward from above.
  • the second adsorption heat exchange (62) moisture in the first air is adsorbed by the adsorbent carried on the outer surface. The heat of adsorption generated at that time is absorbed by the refrigerant.
  • the dehydrated first air passes through the fourth opening (54), the first outflow passage (44), and the exhaust fan (26) in that order, and as exhaust air (EA), the exhaust air outlet (23). From the room.
  • the dampers (71 to 78) of the respective openings (51 to 58), the second opening (52), the third opening (53), and the fifth opening (55) are switched.
  • the eighth opening (58) are in an open state, and the first opening (51), the fourth opening (54), the sixth opening (56), and the seventh opening (57) are in a closed state.
  • the first adsorption heat exchanger (61) is supplied with room air (RA) as the first air
  • the second adsorption heat exchanger (62) is supplied with the second air.
  • Outdoor air (OA) is supplied.
  • the first air flowing from the indoor air suction port (22) passes through the fifth opening (55) from the second inflow path (45) to the first heat exchange chamber (41). Sent in.
  • the first air passes through the first adsorption heat exchanger (61) from top to bottom.
  • the first adsorption heat exchange (61) moisture in the first air is adsorbed by the adsorbent carried on the outer surface. The heat of adsorption generated at that time is absorbed by the refrigerant.
  • the dehydrated first air passes through the third opening (53), the first outflow passage (44), and the exhaust fan (26) in that order, and as exhaust air (EA), the exhaust air outlet (23). From the room.
  • the second air flowing from the outdoor air suction port (21) is sent from the first inflow path (43) through the second opening (52) to the second heat exchange chamber (42).
  • the second air passes upward through the second adsorption heat exchanger (62).
  • the adsorbent carried on the outer surface is heated by the refrigerant, and moisture is desorbed from the adsorbent.
  • the desorbed water is given to the second air passing through the second adsorption heat exchange (62).
  • the humidified second air passes through the eighth opening (58), the second outflow passage (46), and the air supply fan (25) in this order, and is supplied from the air supply outlet (24) as supply air (SA). Room Supplied inside.
  • the first operation and the second operation are alternately switched during the dehumidifying operation, while the first operation and the second operation are alternately switched during the humidifying operation.
  • This switching is performed by the circulation switching means (71), for example, by switching the four-way switching valve (64) every three minutes.
  • the compressor (63) is stopped for a predetermined time before the differential pressure reducing means (80) switches the four-way switching valve (64) of the circulation switching means (71), and the four-way switching valve ( After the switching of 64), the operation of the compressor (63) is restarted.
  • the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) decreases, and the refrigerant instantaneously flows from the high pressure side to the low pressure side. Can be suppressed. As a result, the generation noise of the refrigerant at the time of switching is suppressed.
  • the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) is reduced, so that the refrigerant moves from the high pressure side to the low pressure side.
  • An instantaneous flowing operation does not occur, and it is possible to prevent the noise generated by the accompanying refrigerant.
  • the switching frequency is high, the sound of the refrigerant does not matter.
  • the capacity of the compressor (63) is reduced instead of the differential pressure reducing means (80) of the first embodiment stopping the compressor (63). Things.
  • the compressor (63) is configured such that the operating capacity is variable, and for example, the operating frequency is switched to a plurality of stages by the inverter.
  • the differential pressure reducing means (80) reduces the operating frequency of the compressor (63) before switching the four-way switching valve (64), and reduces the operating frequency of the compressor (63) after switching the four-way switching valve (64). Return the operating frequency of) It is configured as follows.
  • the expansion valve (65) is configured to have a variable opening, and for example, is configured such that the opening changes by a motorized valve in a plurality of stages.
  • the differential pressure reducing means (80) increases the degree of opening of the expansion valve (65) before switching the four-way switching valve (64).
  • the opening degree of the expansion valve (65) is returned after the switching of the valve (64).
  • the bypass valve (82) is a valve that switches between a fully open position and a fully closed position, performs binos of refrigerant, and is a normally closed valve that is fully closed during normal operation. .
  • the valve control operation is performed.
  • the stage (84) opens the bypass valve (82) and closes the bypass valve (82) after switching the four-way switching valve (64). Due to the opening of the bypass valve (82) by the valve control means (84), the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) is reduced, thereby suppressing the operation of the refrigerant flowing from the high pressure side to the low pressure side momentarily can do. As a result, the refrigerant generation noise at the time of switching is suppressed.
  • the flow rate regulator (83) is provided in the bypass path (81), the high pressure side through the refrigerant gas bypass valve (82) when the no-pass valve (82) is opened.
  • the operation in which the force also instantaneously flows to the low pressure side can be suppressed.
  • the noise generated by the refrigerant due to the opening of the bypass valve (82) is suppressed.
  • Other configurations, operations and effects are the same as those of the first embodiment.
  • the capillary tube is applied to the flow regulator (83), but a motorized valve or the like whose opening can be freely adjusted may be applied as a flow adjustment mechanism.
  • the bypass valve (82) may be constituted by a valve whose opening degree is adjustable, and the bypass valve (82) may have a flow rate adjusting function as the flow rate regulator (83).
  • the refrigerant of Embodiment 4 instead of the refrigerant of Embodiment 4 bypassing the expansion valve (65), the refrigerant flows from the discharge side of the compressor (63) to the suction side. It is designed to be bypassed.
  • valve control means provided in the controller (70).
  • Both ends of the bypass passage (81) are connected to the discharge pipe (6d) and the suction pipe (6e) of the compressor (63) to connect the discharge side and the suction side of the compressor (63),
  • the refrigerant is configured to flow from the discharge side of the compressor (63) to the suction side.
  • the bypass valve (82), the flow regulator (83), and the valve control means (84) are the same as in the fourth embodiment.
  • the refrigerant when the bypass valve (82) is opened, the refrigerant momentarily flows from the high pressure side to the low pressure side via the bypass valve (82) by the flow controller (83). Can be suppressed. Refrigerant generation noise due to the opening of the noise valve (82) is suppressed.
  • the differential pressure reducing means (80) of the first embodiment instead of the differential pressure reducing means (80) of the first embodiment stopping the compressor (63), the differential pressure reducing means (80) ) Is to reduce the refrigerant circulation amount.
  • the differential pressure reducing means (80) of the present embodiment includes an on-off valve (85) provided in the suction pipe (6e) of the compressor (63), which is a gas pipe through which the gas refrigerant always flows. , Controller (70
  • the valve control means (84) closes the on-off valve (85) before switching the four-way switching valve (64), and opens the on-off valve (85) after switching the four-way switching valve (64). It is composed into!
  • the pressure up to the on-off valve (85) through the expansion valve (65) and the second adsorption heat exchanger (62) is maintained at a high pressure. Therefore, the differential pressure between the high pressure side and the low pressure side of the refrigerant circuit (60) becomes small, and the four-way switching valve (
  • the refrigerant sucked into the compressor (63) is suppressed, so that the liquid back of the liquid refrigerant returning to the compressor (63) can be reliably prevented.
  • Other configurations, operations, and effects are the same as those of the first embodiment.
  • the on-off valve (85) is provided on the suction pipe (6e) of the compressor (63).
  • the on-off valve (85) of (6e) the on-off valve (85) of the discharge pipe (6d) of the compressor (63), which is a gas pipe through which the gas refrigerant always flows, as shown by the dashed line in FIG. May be provided! That is, the on-off valve (85) is provided between the compressor (63) and the first port of the four-way switching valve (64).
  • the four-way switching valve (64), the first adsorption heat exchange (61), the expansion valve (65), and the second adsorption heat exchange (62) ) Is maintained at a low pressure up to the suction side of the compressor (63).
  • the differential pressure reducing means (80) of the second embodiment or the like is used together.
  • the present invention may be configured as follows in each of the above embodiments.

Abstract

Il est prévu un dispositif de conditionnement d'humidité, dans lequel un circuit réfrigérant (60) est formé par connexion d’un compresseur (63), d’une valve de sélection quatre voies (64), d’un premier échangeur thermique adsorbant (61), d’une valve de dilatation (65), et d’un second échangeur thermique adsorbant (62) les uns aux autres de façon à inverser la circulation d’un réfrigérant pour réaliser un cycle de réfrigération de compression de vapeur. Un adsorbant pour adsorber et désorber l’humidité est porté à la surface du premier échangeur thermique adsorbant (61) et du second échangeur thermique adsorbant (62). Pour adsorber et désorber en alternance l’humidité par le premier échangeur thermique adsorbant (61) et le second échangeur thermique adsorbant (62), le mécanisme de commutation (valve de sélection quatre voies) (64) est commuté pour changer le sens de circulation du réfrigérant dans le circuit réfrigérant (60). En outre, avant de commuter la circulation du réfrigérant, on arrête le compresseur (63) pour abaisser la pression différentielle entre le côté haute pression et le côté basse pression du circuit réfrigérant (60).
PCT/JP2005/005965 2004-03-31 2005-03-29 Dispositif de conditionnement d'humidité WO2005095868A1 (fr)

Applications Claiming Priority (2)

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JP2004-101597 2004-03-31
JP2004101597A JP2005283041A (ja) 2004-03-31 2004-03-31 調湿装置

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WO2011117922A1 (fr) * 2010-03-25 2011-09-29 三菱電機株式会社 Dispositif de climatisation
AU2012281861B2 (en) * 2011-07-11 2015-06-25 Daikin Industries, Ltd. Humidity adjustment device
EP3489596A1 (fr) * 2017-11-22 2019-05-29 Evolving Living Innovation Center E.L.I.C. S.r.l. Appareil de pompe à chaleur amélioré pour le renouvellement de l'air dans des locaux d'habitation et son procédé de fonctionnement

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JP5098573B2 (ja) * 2007-10-31 2012-12-12 ダイキン工業株式会社 調湿装置
JP5229368B2 (ja) * 2011-09-29 2013-07-03 ダイキン工業株式会社 調湿装置
WO2013136714A1 (fr) * 2012-03-14 2013-09-19 ダイキン工業株式会社 Équipement de régulation de l'humidité
JP5786774B2 (ja) * 2012-03-16 2015-09-30 ダイキン工業株式会社 調湿装置
JP6204758B2 (ja) * 2013-09-02 2017-09-27 ダイキン工業株式会社 調湿装置
KR102056852B1 (ko) * 2014-01-27 2019-12-17 한온시스템 주식회사 차량용 공조장치
JP6795680B2 (ja) * 2017-03-10 2020-12-02 三菱電機株式会社 冷凍サイクル装置
CN109126374A (zh) * 2017-06-27 2019-01-04 中国石油化工股份有限公司 一种旋转阀式吸附系统
JP7191914B2 (ja) * 2020-10-14 2022-12-19 三菱電機株式会社 冷凍サイクル装置

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EP3489596A1 (fr) * 2017-11-22 2019-05-29 Evolving Living Innovation Center E.L.I.C. S.r.l. Appareil de pompe à chaleur amélioré pour le renouvellement de l'air dans des locaux d'habitation et son procédé de fonctionnement

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