EP1959203A1 - Dispositif interieur pour climatiseur - Google Patents

Dispositif interieur pour climatiseur Download PDF

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Publication number
EP1959203A1
EP1959203A1 EP06833007A EP06833007A EP1959203A1 EP 1959203 A1 EP1959203 A1 EP 1959203A1 EP 06833007 A EP06833007 A EP 06833007A EP 06833007 A EP06833007 A EP 06833007A EP 1959203 A1 EP1959203 A1 EP 1959203A1
Authority
EP
European Patent Office
Prior art keywords
valve
port
pipe
control valve
indoor unit
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP06833007A
Other languages
German (de)
English (en)
Other versions
EP1959203A4 (fr
Inventor
Masanao Yasutomi
Youhei Takada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
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 EP1959203A1 publication Critical patent/EP1959203A1/fr
Publication of EP1959203A4 publication Critical patent/EP1959203A4/fr
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0083—Indoor units, e.g. fan coil units with dehumidification means
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions

Definitions

  • the present invention relates to an indoor unit of an air conditioner.
  • the indoor unit of an air conditioner having a plurality of control valves has a problem that the external shape of the indoor unit becomes large. It is desirable that the casing of an indoor unit of an air conditioner is as small as possible because it is located in a room. However, when the number of control valves located in the casing is large, there is a problem that the casing must be enlarged in order to keep a storage space for the control valves.
  • the present applicant has proposed an indoor unit of an air conditioner which is able to have a small casing in spite of provision of a plurality of control valves.
  • the control valves are located between the casing and the indoor heat exchanger and behind the indoor heat exchanger while being away from each other in the longitudinal direction of the indoor heat exchanger.
  • the indoor unit is able to have a small casing while being provided with a plurality of control valves.
  • an indoor unit of an air conditioner according to the present invention comprises:
  • the first and second control valves are located in the casing and on one lateral side of the indoor heat exchanger, and not in an air passage, so that the heat exchange efficiency is prevented from decreasing and the casing can be miniaturized.
  • the first and second control valves may be on-off valves or expansion valves.
  • the indoor heat exchanger includes a first heat exchange section and a second heat exchange section, and the first and second control valves are mounted on pipes connecting the first heat exchange section with the second heat exchange section.
  • the flow of coolant in the first heat exchange section and the second heat exchange section can be controlled and the pressure of the coolant can be reduced between the first heat exchange section and the second heat exchange section by opening and closing the first and second control valves mounted on pipes connecting the first heat exchange section with the second heat exchange section.
  • first and second control valves each comprise:
  • the first and second control valves are used each of which is shaped generally like the letter T including the first and second ports pointing in directions substantially orthogonal to each other, the valve body provided between the first port and the second port, and the drive section extending in a direction opposite to the direction in which the first port points and driving the valve body.
  • This configuration allows the degree of flexibility in connection of piping to the first and second control valves to be increased as compared with the case that the first and second ports pointing in the same direction are provided.
  • first and second control valves each comprise:
  • the first and second control valves are used in each of which the valve unit, the portion near the first port of the first pipe connected with the first port, and the portion near the second port of the second pipe connected with the second port are combined in the shape of about the letter T. Therefore, the degree of flexibility in connection of piping to the first and second control valves can be increased.
  • the second port of the first control valve and the second port of the second control valve point in opposite directions and inward, and a second pipe connected with the first control valve and a second pipe connected with the second control valve do not interfere with each other.
  • the second port of the first control valve and the second port of the second control valve point in opposite directions and inward, and the second pipe connected with the first control valve and the second pipe connected with the second control valve do not interfere with each other, so that the second pipes connected with the second ports of the first and second control valves can be provided close to each other, and thereby the space occupied by the valves in the indoor unit can be made smaller.
  • the first and second control valves are located in the casing in such a manner that a direction in which the second port of the first control valve points is substantially parallel with a direction in which the second port of the second control valve points.
  • the space occupied by the second pipes connected with the second ports of the first and second control valves is allowed to be made smaller.
  • a first pipe connected with the first control valve has a bend which turns near the first port in a direction substantially orthogonal to a direction in which the first port of the first control valve points
  • a first pipe connected with the second control valve has a bend which turns in a direction substantially orthogonal to a direction in which the first port of the second control valve points.
  • each of the first pipes connected with the first and second control valves has a bend that is bent from a portion near the first port in a direction substantially orthogonal to the direction in which the first port of the first control valve points, so that the bends of the first pipes connected with the first ports of the first and second control valves and portions continuous from the bends are easily arranged in a limited space on one side of the indoor heat exchanger.
  • an extension portion extending from the bend of the first pipe connected with the first control valve and an extension portion extending from the bend of the first pipe connected with the second valve point in opposite directions and inward, and the first pipe connected with the first control valve and the first pipe connected with the second control valve do not interfere with each other.
  • the first pipes connected with the first and second control valves are configured such that the extension portion extending from the bend of the first pipe connected with the first control valve and the extension portion extending from the bend of the first pipe connected with the second control valve point in opposite directions and inward and that the first pipe connected with the first control valve and the first pipe connected with the second control valve do not interfere with each other, the bends of the first pipes connected with the first ports of the first and second control valves and the extension portions extending from the bends are allowed to be placed close to each other, and thereby the space occupied by the valves in the indoor unit can be made smaller.
  • the extension portion extending from the bend of the first pipe for the first control valve is generally parallel with the extension portion extending from the bend of the first pipe for the second control valve.
  • the first pipes of the first and second control valves are provided such that the extension portion extending from the bend of the first pipe of the first control valve is substantially parallel with the extension portion extending from the bend of the first pipe of the second control valve. Due to this, the space occupied by the first pipes of the first and second control valves can be made smaller.
  • a direction in which the valve body of the first control valve is driven by the drive section of the first control valve is substantially parallel with a direction in which the valve body of the second control valve is driven by the drive section of the second control valve.
  • the parallel drive directions of the valve bodies of the first and second control valves allow the valve units (including the drive sections and the valve bodies) of the first and second control valves to be placed close to each other, and thereby the space occupied by the valve units in the whole indoor unit can be made smaller.
  • the first and second control valves are arranged along a front-back direction of the indoor unit as viewed from a front face thereof in a state that the casing has been installed.
  • the first and second control valves are arranged in the casing along the front-back direction of the indoor unit as viewed from the front face thereof in the state that the casing has been installed, a narrow space on one lateral side of the indoor heat exchanger is usable for the placement of the first and second control valves.
  • an indoor unit of an air conditioner which has no control valves in an air passage so that the heat exchange efficiency is prevented from decreasing and the casing is downsizable.
  • the flow of coolant in the first heat exchange section and the second heat exchange section is controlled and the pressure of the coolant can be reduced between the first heat exchange section and the second heat exchange section.
  • the ability of the indoor heat exchanger is controllable.
  • the first and second control valves are used each of which is shaped generally like the letter T including the first and second ports pointing in directions substantially orthogonal to each other, the valve body provided between the first port and the second port, and the drive section extending in a direction opposite to the direction in which the first port points and driving the valve body.
  • This configuration allows the degree of flexibility in connection of piping to the first and second control valves to be increased as compared with the case that the first and second ports pointing in the same direction are provided.
  • the first and second control valves are used in each of which the valve unit which includes a valve body and a drive section driving the valve body and has a length in a direction in which the valve body and the drive section are arranged, the portion near the first port of the first pipe connected with the first port, and the portion near the second port of the second pipe connected with the second port are combined in the shape of about the letter T. Therefore, the degree of flexibility in arranging piping connected to the first and second control valves can be increased.
  • the second port of the first control valve and the second port of the second control valve point in opposite directions and inward and are not arranged in line, and the second pipe connected with the first control valve and the second pipe connected with the second control valve do not interfere with each other, so that the second pipes connected with the second ports of the first and second control valves can be provided close to each other, and thereby the space to be occupied by these parts in the indoor unit can be made smaller.
  • the first and second control valves are located in the casing in such a manner that a direction in which the second port of the first control valve points is substantially parallel with a direction in which the second port of the second control valve points, the space occupied by the second pipes connected with the second ports of the first and second control valves is allowed to be made smaller.
  • each of the first pipes connected with the first and second control valves has a bend that is bent from a portion near the first port in a direction substantially orthogonal to the direction in which the first port of the first control valve points, so that the bends of the first pipes connected with the first ports of the first and second control valves and portions continuous from the bends are easily arranged in a narrow space on one side of the indoor heat exchanger.
  • an extension portion extending from a bend of a first pipe connected with the first control valve and an extension portion extending from a bend of a first pipe connected with the second valve point in opposite directions and inward and are not arranged in line, and the first pipe connected with the first control valve and the first pipe connected with the second control valve do not interfere with each other.
  • the bends of the first pipes connected with the first ports of the first and second control valves and the extension portions extending from the bends are allowed to be placed close to each other, and thereby the space occupied by these parts in the whole indoor unit can be made smaller.
  • the first pipes of the first and second control valves are provided such that the extension portion extending from the bend of the first pipe of the first control valve is substantially parallel with the extension portion extending from the bend of the first pipe of the second control valve. Due to this, the space occupied by the first pipes of the first and second control valves can be made smaller.
  • a direction in which the valve body of the first control valve is driven by the drive section of the first control valve is substantially parallel with a direction in which the valve body of the second control valve is driven by the drive section of the second control valve, so that the valve units (including the drive sections and the valve bodies) of the first and second control valves can be provided close to each other, and thereby the space occupied by the valve units in the whole indoor unit can be made smaller.
  • the first and second control valves are arranged in the casing along the front-back direction of the indoor unit as viewed from the front face thereof in the state that the casing has been installed, a narrow space on one lateral side of the indoor heat exchanger is used for the placement of the first and second control valves.
  • Fig. 1 is a circuit diagram of an indoor unit and an outdoor unit of an air conditioner of an embodiment of the present invention.
  • the reference numeral 1 denotes the outdoor unit
  • the reference numeral 2 denotes the indoor unit.
  • the outdoor unit 1 of the air conditioner of this embodiment has a compressor 10, a four-way valve 11, an outdoor heat exchanger 12, a motor operated expansion valve 13, a filter 14, closing valves 15 and 19, an accumulator 20, and an outdoor fan 21.
  • the indoor unit 2 has a first heat exchange section 16, first and second electromagnetic valves 17A and 17B as an example of the first and second control valves, a second heat exchange section 18, and an indoor fan 22.
  • Each of the first and second electromagnetic valves 17A and 17B does not assume a fully-closed state in a closing operation and has a restriction with a predetermined opening area to work as a pressure reducing means.
  • a discharge side end of the compressor 10 is connected with an end of the four-way valve 11, and another end of the four-way valve 11 is connected with an end of the outdoor heat exchanger 12.
  • Another end of the outdoor heat exchanger 12 is connected with an end of the motor operated expansion valve 13, and another end of the motor operated expansion valve 13 is connected with an end of the filter 14.
  • Another end of the filter 14 is connected with an end of the closing valve 15, and another end of the closing valve 15 is connected with an end of the first heat exchange section 16 through a communication pipe L1.
  • Another end of the first heat exchange section 16 is connected with an end of the first electromagnetic valve 17A and an end of the second electromagnetic valve 17B, and another end of the first electromagnetic valve 17A and another end of the second electromagnetic valve 17B are connected with an end of the second heat exchange section 18.
  • Another end of the second heat exchange section 18 is connected with an end of the closing valve 19 through a communication pipe L2, and another end of the closing valve 19 is connected with the suction side of the compressor 10 through the four-way valve 11 and the accumulator
  • the compressor 10, the four-way valve 11, the outdoor heat exchanger 12, the motor operated expansion valve 13, the filter 14, the closing valve 15, the first heat exchange section 16, the first electromagnetic valve 17A, the second electromagnetic valve 17B, the second heat exchange section 18, the closing valve 19, and the accumulator 20 constitute a coolant circuit.
  • the four-way valve 11 when a cooling operation is performed, the four-way valve 11 is switched to a solid line position, the motor operated expansion valve 13 is opened to a predetermined opening position, the first and second electromagnetic valves 17A and 17B are opened, and then the operation of the compressor is started. Then a high temperature high pressure gaseous coolant discharged from the compressor 10 is condensed by heat exchange with outside air in the outdoor heat exchanger 12. After that, liquid coolant which has been expanded by the motor operated expansion valve 13 to become low in temperature and pressure flows into the first and second heat exchange sections 16 and 18 through the filter 14, the closing valve 15 and the communication pipe L1 .
  • the liquid coolant which has flowed into the first and second heat exchange sections 16 and 18 is evaporated by heat exchange with room air to cool the room air.
  • the gaseous coolant obtained by evaporation of the liquid coolant in the first and second heat exchange sections 16 and 18 is returned to the suction side of the compressor 10 through the communication pipe L2, the closing valve 19, the four-way valve 11 and the accumulator 20.
  • the four-way valve 11 is switched to a dotted line position, the motor operated expansion valve 13 is opened to a predetermined opening position as in the cooling operation, the first and second electromagnetic valves 17A and 17B are opened, and then the operation of the compressor 10 is started. Then the room air is heated in a cycle opposite to the cooling cycle in the cooling operation.
  • the four-way valve 11 is switched to the solid line position, the motor operated expansion valve 13 is fully opened, the first and second electromagnetic valves 17A and 17B are closed to be placed in a restricted state with a predetermined opening area, and then the operation of the compressor 10 is started. Then the high temperature high pressure gaseous coolant discharged from the compressor 10 is condensed by heat exchange with the outside air in the outdoor heat exchanger 12 and the first heat exchange section 16. After that, the liquid coolant which has been expanded by the first and second electromagnetic valve 17A and 17B to become low in temperature and pressure flows into the second exchange section 18. The liquid coolant which has flowed into the second exchange section 18 evaporates by heat exchange with the room air. Next, the gaseous coolant obtained by evaporation of the liquid coolant in the second heat exchange section 18 is returned to the suction side of the compressor 10 through the communication pipe L2, the closing valve 19, the four-way valve 11, and the accumulator 20.
  • dehumidification is performed without lowering the room temperature by cooling room air with the second heat exchange section 18 working as an evaporator while heating the room air with the first heat exchange section 16 working as a condenser.
  • Fig. 2 is a perspective view of the indoor unit of the air conditioner.
  • the indoor unit 2 of the air conditioner has a bottom frame 3 and a front panel 4 which is attached to the front side of the bottom frame 3 so as to be removed freely.
  • the bottom frame 3 and the front panel 4 constitute a casing.
  • the second heat exchange section 18 (18A and 18B in Fig. 2 ) is located, and located on the back side of the second heat exchange section 18 is the first heat exchange section 16 (16A and 16B in Fig. 2 ) substantially shaped like an upset v in cross section.
  • the first heat exchange section 16 and the second heat exchange section 18 constitute an indoor heat exchanger.
  • an electrical components box 25 is located on the right side of the indoor heat exchanger.
  • An electromagnetic valve assembly 30 including the first and second electromagnetic valves 17A and 17B is provided in a piping space between the indoor heat exchanger and the electrical components box 25.
  • Figs. 3 to 6 are a front view, a right side view, a left side view, and a top view of the electromagnetic valve assembly 30, respectively.
  • the electromagnetic valve assembly 30 includes the first electromagnetic valve 17A, the second electromagnetic valve 17B, a first flow divider 33, and a second flow divider 43.
  • Each of the first and second electromagnetic valves 17A and 17B includes, as shown in an essential portion enlarged view circled at the lower right of Fig. 4 , a housing 61 consisting of a valve body housing section 61b housing a valve body 52 and a plunger housing section 61a housing a plunger 51 as an example of a drive section, a solenoid coil 64 driving the plunger 51 to operate the valve body 52, a passage 61c which is provided in the housing 61 and is opened and closed by the valve body 52, a first pipe 62 connected with a first port 65 at an end of the passage 61c, and a second pipe 63 connected with a second port 66 at another end of the passage 61c so as to be substantially orthogonal to the first pipe 62.
  • the valve body 52 is in a region where the first pipe 62 intersects the second pipe 63, and the plunger 51 drives the valve body 52 along the direction of extension of the first pipe 62.
  • the plunger 51, the valve body 52, and the housing 61 constitute a valve unit which is elongated in the direction of arrangement of the valve body 52 and the plunger 51.
  • first and second electromagnetic valves 17A and 17B In each of the first and second electromagnetic valves 17A and 17B, the plunger 51, the valve body 52 and the connection part of the first pipe 62 are arranged straight.
  • the first and second electromagnetic valves 17A and 17B are arranged in ,such a manner that the direction of arrangement of the plunger 51, the valve body 52, and the connection part of the first pipe 62 of the first control valve 17A is substantially parallel with the direction of arrangement of the plunger 51, the valve body 52, and the connection part of the first pipe 62 of the second control valve 17B.
  • the second pipe 63 of the first control valve 17A extends toward the second control valve 17B, and the second pipe 63 of the second control valve 17B extends toward the first control valve 17A so as not to hit the second pipe 63 of the first control valve 17A.
  • An end of the first pipe 62 of the first control valve 17A is connected with an end of a pipe 32, and another end of the pipe 32 is connected with the first port of the first flow divider 33.
  • coolant which has flowed into the flow divider 33 through the first port (an inlet port) of the flow divider 33 is divided to flow out of the flow divider 33 through second and third ports (outlet ports) of the flow divider 33 (It is to be noted that when the coolant flows in the opposite direction, the flow divider 33 works as a flow merger.).
  • the second port of the first flow divider 33 is connected with a heat-transfer pipe (not shown) of the second heat exchange section 18 through a pipe 34, and the third port of the first flow divider 33 is connected with a heat-transfer pipe (not shown) of the second heat exchange section 18 through a pipe 35.
  • the pipe 35 is mounted with a thermistor 50.
  • an end of the second pipe 63 of the first control valve 17A is connected with a heat-transfer pipe (not shown) of the first heat exchange section 16 through a pipe 31.
  • an end of the first pipe 62 of the second control valve 17B is connected with an end of a pipe 42, and another end of the pipe 42 is connected with the first port of the second flow divider 43.
  • coolant which has flowed into the flow divider 43 through the first port (an inlet port) of the flow divider 43 is divided to flow out of the flow divider 43 through second and third ports (outlet ports) of the flow divider 43 (When the coolant flows in the opposite direction, the flow divider 43 functions as a flow merger.).
  • the second port of the second flow divider 43 is connected with a heat-transfer pipe (not shown) of the second heat exchange section 18 through a pipe 44, and the third port of the second flow divider 43 is connected with a heat-transfer pipe (not shown) of the second heat exchange section 18 through a pipe 45. Furthermore, an end of the second pipe 63 of the second control valve.17B is connected with a heat-transfer pipe (not shown) of the first heat exchange section 16 through a pipe 41.
  • the first and second electromagnetic valves 17A and 17B are fixed to each other by covering pipes around the first and second electromagnetic valves 17A and 17B of the electromagnetic valve assembly 30 with a covering section 71 made by using butyl rubber tapes and/or putty. Furthermore, the first and second flow dividers 33 and 43 are also covered with a covering section 72 made by using butyl rubber tapes and/or putty.
  • the first and second electromagnetic valves 17A and 17B are located in the casing (3, 4) and on one lateral side of the indoor heat exchangers (16, 18), so that the heat exchange efficiency is prevented from reducing and the casing (3, 4) can be miniaturized due to non-presence of control valves (17A, 17B) in an air passage.
  • the flow of coolant in the first heat exchange section 16 and the second heat exchange section 18 is controllable by opening and closing the first and second electromagnetic valves 17A and 17B mounted on pipes connecting the first heat exchange section 16 with the second heat exchange section 18.
  • a reheating and dehumidifying operation is made possible by reducing the pressure of the coolant by the first and second electromagnetic valve 17A and 17B between the first heat exchange section 16 and the second heat exchange section 18.
  • first and second electromagnetic valves 17A and 17B are used each of which includes the first and second ports 65 and 66 pointing in directions substantially orthogonal to each other, the valve body 52 provided between the first port 65 and the second port 66, and a plunger 51 extending in a direction opposite to a direction in which the first port 65 points and driving the valve body 52.
  • the valve unit which is constituted by the plunger 51, the valve body 52, and the housing 61, a portion adjacent to the first port 65 of the first pipe 62 connected with the first port 65, and a portion adjacent to the second port 66 of the second pipe 63 connected with the second port 66 are combined in the shape similar to the letter T. Due to this configuration, the degree of flexibility in arranging pipes connected to the first and second electromagnetic valves 17A and 17B is increased as compared with the case that the first and second ports are provided so as to point in the same direction.
  • the second port 66 of the first electromagnetic valve 17A and the second port 66 of the second electromagnetic valve 17B point in opposite directions and inward (i.e., toward each other) and are not arranged in line, and the second pipe 63 connected with the first electromagnetic valve 17A and the second pipe 63 connected with the second electromagnetic valve 17B do not interfere with each other.
  • This configuration allows the second pipes 63 connected with the second ports 66 of the first and second electromagnetic valves 17A and 17B to be provided close to each other, and thereby the space occupied by these parts in the whole indoor unit can be made smaller.
  • first and second electromagnetic valves 17A and 17B are located in the casing 3, 4 in such a manner that a direction in which the second port 66 of the first electromagnetic valve 17A is oriented is parallel with a direction in which the second port 66 of the second electromagnetic valve 17B is oriented, so that the space occupied by the second pipes 63 connected with the second ports 66 of the first and second electromagnetic valves 17A and 17B can be made small.
  • the second pipe 63 connected with the second port 66 of the first electromagnetic valve 17A is substantially parallel with the second pipe 63 connected with the second port 66 of the second electromagnetic valve 17B.
  • each of the first pipes 62 connected with the first and second electromagnetic valves 17A and 17B has a bend bent from a portion near the first port 65 in a direction substantially orthogonal to a direction in which the first port 65 of the first electromagnetic valve 17A points or is oriented, so that the bends of the first pipes 62 connected with the first ports 65 of the first and second electromagnetic valves 17A and 17B and portions connected with the bends can be easily arranged in a limited space on one side of the indoor heat exchanger 16, 18.
  • an extension portion extending from the bend of the first pipe 62 connected with the first electromagnetic valve 17A and an extension portion extending from the bend of the first pipe 62 connected with the second electromagnetic valve 17B point or face in opposite directions and inward and are not arranged in line, and the first pipe 62 connected with the first electromagnetic valve 17A and the first pipe 62 connected with the second electromagnetic valve 17B do not interfere with each other, so that the bends of the first pipes 62 connected with the first ports 65 of the first and second electromagnetic valves 17A and 17B and the extension portions extending from the bends are allowed to be placed close to each other, and thereby the space occupied by those parts in the indoor unit can be made smaller.
  • extension portion extending from the bend of the first pipe 62 of the first electromagnetic valve 17A is substantially parallel with the extension portion extending from the bend of the first pipe 62 of the second electromagnetic valve 17B, so that the space occupied by the first pipes 62 of the first and second electromagnetic valves 17A and 17B can be made small.
  • a direction in which the valve body 52 of the first electromagnetic valve 17A is driven by the plunger 51 of the first electromagnetic valve 17A is approximately parallel with a direction in which the valve body 52 of the second electromagnetic valve 17B is driven by the plunger 51 of the second electromagnetic valve 17B, so that the valve units (including the plungers 51, the valve bodies 52, and the housings 61) of the first and second electromagnetic valves 17A and 17B are allowed to be provided close to each other, and thereby the space to be occupied by these parts in the indoor unit can be made smaller.
  • first and second electromagnetic valves 17A and 17B are arranged in the casing 3, 4 along the front-back direction of the indoor unit as viewed from the front thereof in the state that the casing 3, 4 has been installed, so that the first and second electromagnetic valves 17A and 17B are allowed to be arranged in a limited space on one side of the indoor heat exchanger.
  • the first and second electromagnetic valves 17A and 17B are arranged between the first and second heat exchange sections, so that it is possible to reduce the pressure loss and hence prevent the ability from decreasing.
  • first and second electromagnetic valves 17A and 17B which are expansion valves, as an example of the first and second control valves.
  • the first and second control valves are not limited to them and may be other control valves such as on-off valves.
  • the above embodiment has been described in connection with the indoor unit of an air conditioner in which the first and second electromagnetic valves 17A and 17B as an example of the first and second control valves are placed on one lateral side of the indoor heat exchanger.
  • the present invention may be applied to an indoor unit of an air conditioner in which more than two control valves are located on one lateral side of the indoor heat exchanger.
  • the first and second electromagnetic valves 17A and 17B are operated at the same time.
  • an indoor unit of an air conditioner according to the present invention may be configured to perform an operation of opening one of the first and second control valves while closing the other one. In this case, the coolant flow through the heat exchange section downstream of the first and second control valves will be biased.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
EP06833007A 2005-11-30 2006-11-21 Dispositif interieur pour climatiseur Withdrawn EP1959203A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005345569A JP4017006B2 (ja) 2005-11-30 2005-11-30 空気調和機の室内機
PCT/JP2006/323157 WO2007063738A1 (fr) 2005-11-30 2006-11-21 Dispositif interieur pour climatiseur

Publications (2)

Publication Number Publication Date
EP1959203A1 true EP1959203A1 (fr) 2008-08-20
EP1959203A4 EP1959203A4 (fr) 2012-06-27

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EP06833007A Withdrawn EP1959203A4 (fr) 2005-11-30 2006-11-21 Dispositif interieur pour climatiseur

Country Status (4)

Country Link
EP (1) EP1959203A4 (fr)
JP (1) JP4017006B2 (fr)
CN (1) CN101317039A (fr)
WO (1) WO2007063738A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6079619B2 (ja) * 2013-12-27 2017-02-15 ダイキン工業株式会社 空調室内機

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002243183A (ja) * 2001-02-20 2002-08-28 Fujitsu General Ltd 空気調和機
JP2003139443A (ja) * 2001-11-05 2003-05-14 Fujitsu General Ltd 空気調和機の室内機
US20040089020A1 (en) * 2002-11-09 2004-05-13 Lg Electronics Inc. Indoor unit in air conditioner and air conditioner therewith

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002061879A (ja) * 2000-08-21 2002-02-28 Mitsubishi Electric Corp 空気調和装置の室内ユニット
JP2005273923A (ja) * 2004-03-23 2005-10-06 Hitachi Home & Life Solutions Inc 空気調和機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002243183A (ja) * 2001-02-20 2002-08-28 Fujitsu General Ltd 空気調和機
JP2003139443A (ja) * 2001-11-05 2003-05-14 Fujitsu General Ltd 空気調和機の室内機
US20040089020A1 (en) * 2002-11-09 2004-05-13 Lg Electronics Inc. Indoor unit in air conditioner and air conditioner therewith

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2007063738A1 *

Also Published As

Publication number Publication date
EP1959203A4 (fr) 2012-06-27
WO2007063738A1 (fr) 2007-06-07
JP2007147216A (ja) 2007-06-14
CN101317039A (zh) 2008-12-03
JP4017006B2 (ja) 2007-12-05

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