EP4180727B1 - Innenraumeinheit - Google Patents

Innenraumeinheit

Info

Publication number
EP4180727B1
EP4180727B1 EP22206496.6A EP22206496A EP4180727B1 EP 4180727 B1 EP4180727 B1 EP 4180727B1 EP 22206496 A EP22206496 A EP 22206496A EP 4180727 B1 EP4180727 B1 EP 4180727B1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
heat exchanger
indoor unit
housing
piping
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.)
Active
Application number
EP22206496.6A
Other languages
English (en)
French (fr)
Other versions
EP4180727A1 (de
Inventor
Masaki Hiraike
Naoya Wada
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.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co 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 Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of EP4180727A1 publication Critical patent/EP4180727A1/de
Application granted granted Critical
Publication of EP4180727B1 publication Critical patent/EP4180727B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F24F1/0068—Indoor units, e.g. fan coil units characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing
    • 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
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0076—Indoor units, e.g. fan coil units with means for purifying supplied air by electric means, e.g. ionisers or electrostatic separators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
    • 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
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F24F2013/205—Mounting a ventilator fan therein

Definitions

  • the present invention relates to an indoor unit.
  • Japanese Patent Laid-Open No. 2012-141069 discloses an indoor unit for a duct type air conditioner capable of sufficiently cooling electrical components.
  • a partition plate that divides inside of a housing into left and right is provided, one end of the partition plate is fixed to the back side of a front plate, a heat exchange side plate is placed on a piping outlet side of a heat exchanger to hold the heat exchanger in a vertical posture, and one end of the heat exchange side plate is fixed to a back plate. Also, in this indoor unit, the other end of the heat exchange side plate and the other end of the partition plate are fixed to each other to vertically provide the heat exchange side plate and the partition plate in a row, thereby forming a dividing wall.
  • a blower chamber is formed in which a blower device and the heat exchanger are placed, and on the other side divided with the dividing wall, an electrical component chamber is formed. Then, in this indoor unit, an air passage is formed through which air is guided from inside of a frame of a safety drain pan into the electrical component chamber and is further guided from the electrical component chamber into the blower chamber.
  • WO 2021/010296 A1 in order to adopt a flammable refrigerant, it is necessary to install a gas sensor that detects the refrigerant when the refrigerant leaks and further relates to solving the problem of selecting an installation location of the gas sensor.
  • a gas sensor is installed above a drain pan in a side view, and a height from an upper end of the drain pan to the gas sensor is set to satisfy a relational expression represented by L•W ⁇ C1•H1/Q + C2•H/(Q - C3•L•H ⁇ (3/2)) ⁇ ⁇ 90.
  • constant C1 0.0067
  • constant C2 0.01172
  • constant C3 0.000153
  • L [m] a length of a first wall surface of the drain pan
  • W [m] a length of a wall surface of the drain pan intersecting with the first wall surface
  • H1 [m] a depth of the drain pan
  • Q [m ⁇ 3/s] a refrigerant leakage flow rate.
  • WO 20201059006 A1 relates to a refrigeration cycle device comprising a casing that constitutes an outer part, a heat exchanger that is provided inside the casing and has refrigerant piping through which a refrigerant flows, and a refrigerant leak sensing means that is disposed opposing the refrigerant piping.
  • the refrigerant leak sensing means has a refrigerant-sensing sensor for sensing the refrigerant, and a holder member in which the refrigerant-sensing sensor is accommodated, the refrigerant- sensing sensor being disposed opposing the refrigerant piping and being attached to the casing via a holder-retaining member attached to the holder member.
  • JP 2020/134033 A relates to detecting refrigerant leaking from an indoor unit without using a closed space that restricts the layout of piping or a large number of sensors.
  • An indoor unit houses a heat exchanger and a blower fan inside a housing, and is divided into a blower space and a blower space through which airflow passing through the heat exchanger flows.
  • Piping connections connected to the inter-unit piping are provided at the ends of the refrigerant pipes that are drawn out to the piping area and further pulled out from the piping area to the outside of the casing.
  • An opening is formed in the left side wall at a position below the piping connections, and a refrigerant sensor is arranged near the opening.
  • the present invention provides an indoor unit capable of placing a refrigerant sensor in a limited space.
  • the present invention provides an indoor unit including a housing that houses inside a heat exchanger including a refrigerant pipe, and a blower fan, the heat exchanger includes a piping connecting portion that connects, to each other, refrigerant pipings (pipes) through which a refrigerant flows, in the housing, a placement space in which the piping connecting portion is placed, and a front wall are provided, the front wall facing the placement space, the front wall extending along a longitudinal direction of the housing, and on the front wall, a refrigerant sensor that detects the refrigerant is provided.
  • a refrigerant sensor is provided on a side wall extending along a longitudinal direction of a housing. Therefore, the refrigerant sensor can be placed in a limited space of the housing.
  • an indoor unit of an air conditioner including a housing in which an electrical box and a blower chamber are provided
  • This indoor unit includes the housing, and a dividing wall that divides inside of this housing.
  • the blower chamber in which a blower device and a heat exchanger are placed is provided on one side of the dividing wall, and a space in which the electrical box and a piping connecting portion of the heat exchanger are placed is provided on the other side of the dividing wall.
  • a refrigerant sensor that detects a refrigerant may be provided in the space in which the piping connecting portion is placed.
  • This refrigerant sensor is provided, together with the electrical box, a drain pump and the like, on a side surface of the housing in which the piping connecting portion is placed, the side surface being located in a longitudinal direction of the housing.
  • the inventors have found a problem that there is concern that a space to provide the refrigerant sensor on the side surface of the housing is limited when a size of the housing is to be reduced or when a size of the electrical box increases and have constituted the subject matter of the present disclosure to solve the problem.
  • the present invention provides an indoor unit capable of placing a refrigerant sensor in a limited space of a housing.
  • reference character FR shown in each drawing indicates front of an indoor unit in a horizontal suspending state
  • reference character UP indicates an upper part of the indoor unit
  • reference character LH indicates a left side of the indoor unit.
  • each direction follows each direction of the indoor unit.
  • the refrigerant for use in the air conditioner including the indoor unit 100 is, for example, a refrigerant having a slightly flammable or flammable property, such as R32.
  • the indoor unit 100 is a duct type indoor unit installed in a ceiling space, in a wall, under a floor, or the like.
  • the indoor unit 100 is formed in a changeable manner of a placing direction of an air outlet 108 out of which air to be conditioned is blown so that a blowing direction can be changed depending on an installing location. For this reason, for example, when horizontally blowing, as shown in Fig. 1 , the indoor unit 100 is installed in a so-called horizontal suspending state where the air outlet 108 is located on the side. Further, when blowing upward, the indoor unit 100 is installed in a so-called vertical suspending state where a blower port is located above.
  • the indoor unit 100 includes a box-shaped housing 101.
  • the housing 101 has a flat rectangular parallelepiped shape in which a longitudinal direction extends along a left-right direction.
  • the housing 101 includes a front wall 101a located in front, a back wall 101b located rearward, a left wall 101c located in the left direction, and a right wall 101d located in the right direction, and these walls form four side walls of the housing 101.
  • the housing 101 includes a top panel 101e forming a top surface, and a bottom panel 101f forming a bottom surface.
  • the indoor unit 100 includes the decorative panel 102 that covers the front wall 101a.
  • the decorative panel 102 is a panel provided facing the air to be conditioned for improving appearance.
  • the air to be conditioned blown out of the air outlet 108 is sent out to the space to be conditioned through a panel air outlet 102a.
  • Figs. 3 and 4 are perspective views showing an internal configuration of the indoor unit 100. Figs. 3 and 4 do not show the decorative panel 102 and the top panel 101e.
  • a partition plate 103 is provided inside the housing 101.
  • the partition plate 103 is a flat plate-shaped member having a predetermined length dimension extending along the left-right direction of the housing 101.
  • An internal space of the housing 101 is divided, by the partition plate 103, into a blower chamber 105 located in front of the housing 101 and a heat exchanger chamber 107 located at the rear of the housing 101.
  • the partition plate 103 has opposite ends coupled to the left wall 101c and the right wall 101d, respectively.
  • Each blower 110 of the present embodiment is a sirocco fan.
  • Each blower 110 includes a blower fan 115.
  • Each blower fan 115 is coupled to a fan motor 111 via a drive shaft 113 and is rotated when driven with the fan motor 111.
  • the configuration of the blower chamber 105 in the present embodiment is one example, and the number of the blowers 110 and the number of the fan motors 111 are not limited to the above configuration.
  • a heat insulating material is provided in a location facing the heat exchanger chamber 107.
  • the heat insulating material is formed of, for example, Styrofoam or the like and molded in a shape that does not interfere with various members, piping, and the like housed in the heat exchanger chamber 107.
  • the heat exchanger 120 of the present embodiment is a so-called fin tube type heat exchanger, and the heat exchanger 120 is entirely formed into a long flat plate shape by joining a plurality of metal fins to a copper refrigerant pipe.
  • the heat exchanger 120 is placed in a longitudinal direction extending along the left-right direction of the heat exchanger chamber 107.
  • the heat exchanger 120 placed in this way has an upper edge supported on the heat insulating material provided in the front wall 101a and the top panel 101e, and the heat exchanger 120 has a lower edge supported on a location of the drain pan 121 that is located on a partition plate 103 side. For this reason, the heat exchanger 120 is placed in a tilted state from a front wall 101a side toward the partition plate 103 side as being from the upper edge toward the lower edge.
  • the heat exchanger 120 is placed in the up-down direction that is diagonal relative to the up-down direction of the partition plate 103 in a side view of the indoor unit 100. For this reason, the heat exchanger 120 is placed with one flat surface facing the partition plate 103 and each vent port 103a and the other flat surface facing the air outlet 108.
  • the drain pan 121 is provided to cover a substantially entire lower surface of the heat exchanger 120 and receives drain water generated in the heat exchanger 120.
  • Fig. 5 is a perspective view of a vent portion 140 seen from above.
  • the vent portion 140 is a piping connecting portion formed by bending the refrigerant pipe included in the heat exchanger 120 and connecting pipe ends to each other by welding or the like.
  • the vent portion 140 is provided entirely in the up-down direction of the heat exchanger 120.
  • the heat exchanger 120 includes respective piping connecting portions at opposite ends of the heat exchanger in a longitudinal direction.
  • a space in which the refrigerant piping connecting portion 150 is placed will be referred to as a placement space S2.
  • the left wall 101c is formed by a board support plate 131 and a side plate 151.
  • the board support plate 131 is covered with an electrical cover 137 shown with a two-dot chain line in Fig. 4 , to form an electrical box 130.
  • the board support plate 131 forms a bottom surface of the electrical box 130.
  • the board support plate 131 is located on an inner side of the housing 101 than the side plate 151. Therefore, the electrical box 130 is prohibited from bulging outward from the side plate 151, and space in the indoor unit 100 can be saved.
  • the support portion 131a of the board support plate 131 is located on a left side compared with a left end of the heat exchanger 120.
  • the blower chamber 105 is provided to a left side compared with the left end of the heat exchanger 120.
  • the side plate 151 is a plate-shaped member being connected to the board support plate 131 and extending to the front wall 101a.
  • the side plate 151 includes a side plate main body 152 along the front-rear direction of the indoor unit 100 and a bent portion 154 bent in two stages.
  • the side plate main body 152 of the side plate 151 is located on an outer side of the housing 101 than the support portion 131a of the board support plate 131.
  • the bent portion 154 is provided in a rear end portion of the side plate main body 152.
  • the bent portion 154 includes an inner bent portion 154a bent inward from the side plate main body 152 in the left-right direction, and a rear bent portion 154b bent rearward from the inner bent portion 154a.
  • the inner bent portion 154a has a surface in contact with each bent portion 131b, and the rear bent portion 154b has a surface in contact with the support portion 131a.
  • the rear bent portion 154b is coupled to a left end of the partition plate 103.
  • a cutout 153 that is an opening is provided in the side plate main body 152.
  • the liquid connection pipe 155 and the gas connection pipe 157 extend from the cutout 153 outside the housing 101.
  • the cutout 153 includes a first pressing portion 153c and a second pressing portion 153d each of which is a semicircular recess.
  • the drain pump support plate 160 shown with a dashed line in the drawing and the piping support plate 168 shown with a one-dot chain line in the drawing are mounted.
  • a lower part of the cutout 153 is covered with a side plate lower panel 152a mounted to the side plate 151.
  • the drain pump 123 pumps up drain water received by the drain pan 121.
  • the pumped-up drain water flows sequentially through a drain piping 125 (two-dot chain line in the drawing) and the drain water discharge portion 163 and is discharged from the outside of the housing 101 via a drain hose coupled to the drain water discharge portion 163.
  • the piping support plate 168 includes a third pressing portion 165 and a fourth pressing portion 167.
  • Each of the third pressing portion 165 and the fourth pressing portion 167 is a semicircular recess.
  • the placement space S2 between the heat exchanger support portion 177 and the left wall 101c has a width dimension in the left-right direction that is determined by a width dimension of the heat exchanger 120 in the left-right direction.
  • the heat exchanger support portion 177 is provided independently of the board support plate 131. Therefore, the width dimension of the placement space S2 in the left-right direction and a width dimension of the blower chamber 105 in the left-right direction that is determined by the placement of the board support plate 131 can be designed independently of each other. Thereby, in the indoor unit 100, securing of the placement space S2 is easily compatible with highly efficient air conditioning achieved by widening the blower chamber 105.
  • Fig. 10 is a perspective view of the indoor unit 100 seen from behind.
  • the refrigerant sensor 180 is a sensor that detects the refrigerant in the same manner as in the refrigerant sensor 143, and the refrigerant sensor 180 has a sensor body housed in a box body.
  • the refrigerant sensor 180 is connected to the wiring 135 and connected to the board 133 via the wiring 135.
  • the refrigerant sensor 180 is mounted to a lower part of the surface of the mounting plate 175 inside the housing 101.
  • a protruding piece 172 protruding from the mounting plate 175 is provided on the surface of the mounting plate 175 inside the housing 101.
  • the protruding piece 172 has a flat surface, and the flat surface is placed facing the drain pan 121.
  • a threaded hole is provided in this flat surface.
  • a mounting piece 182 is provided in the refrigerant sensor 180.
  • the mounting piece 182 has a flat surface provided with a threaded hole.
  • the refrigerant sensor 180 is fixed to the mounting plate 175 by screwing a screw member 189 that is a fastening member into the threaded holes the flat surfaces have, in a state where the flat surface the mounting piece 182 has is in contact with the flat surface the protruding piece 172 has.
  • the screw member 189 that fixes the refrigerant sensor 180 to the mounting plate 175 has a threaded head placed facing the drain pan 121 or the top panel 101e. In the present embodiment, the threaded head of the screw member 189 is placed facing the drain pan 121.
  • the board for the electrostatic atomization device is a board for controlling the electrostatic atomization device.
  • the electrostatic atomization device is connected to the wiring 135 and connected to the board 133 via the wiring 135.
  • the refrigerant sensor 180 is mounted below the sterilization unit 190, that is, at a position close to the drain pan 121.
  • the refrigerant sensor 180 can more reliably detect the refrigerant having the larger specific gravity than air. Also, in the indoor unit 100, when the leakage of the refrigerant occurs in the refrigerant piping connecting portion 150, the refrigerant sensor 180 can detect the leaked refrigerant.
  • the drain pump 123 On the side plate 151 facing the placement space S2 and the left wall 101c having the side plate 151, the drain pump 123, the electrical box 130 and others are provided.
  • the indoor unit 100 when the housing 101 has a size reduced or the electrical box 130 has a size increased, there is concern that a space in which another member is mounted to the side plate 151 is limited.
  • the refrigerant sensor 180 is provided on the mounting plate 175 that can be removed from the front panel 170, and hence the operator can easily remove the refrigerant sensor 180 from the housing 101, to perform an operation such as inspection or replacement.
  • the indoor unit 100 is formed so that the refrigerant sensor 180 can be accessed from three directions relative to the refrigerant sensor 180 on the front wall 101a side, a bottom panel 101f side and the left wall 101c side.
  • the refrigerant sensor 180 is provided removably from the front panel 170, together with the mounting plate 175. For this reason, the operator can easily remove the refrigerant sensor 180 from the housing 101 and perform the operation, such as the inspection or replacement.
  • the refrigerant sensor 180 can more reliably detect the refrigerant having a larger specific gravity than air. For this reason, in the indoor unit 100, when the leakage of the refrigerant occurs in the refrigerant piping connecting portion 150, the refrigerant sensor 180 can detect the leaked refrigerant.
  • the refrigerant sensor 180 may be provided removably from a bottom surface side of the housing 101.
  • the refrigerant sensor 180 can be mounted and removed from below the housing 101 by removing the bottom panel 101f and the drain pan 121. Therefore, in the indoor unit 100, the refrigerant sensor 180 can be accessed from three directions on the front wall 101a side, the bottom panel 101f side and the left wall 101c side.
  • the vent portion 140 and the refrigerant piping connecting portion 150 are provided, and in the housing 101, a plurality of placement spaces S1, S2 are provided in which the vent portion 140 and the refrigerant piping connecting portion 150 are placed. Then, the refrigerant sensor 143 may be provided in the placement space S1, and the refrigerant sensor 180 may be provided in the placement space S2, respectively.
  • the refrigerant sensor 143 and the refrigerant sensor 180 can detect the leaked refrigerant. For this reason, in the indoor unit 100, the leakage of the refrigerant can be detected at a plurality of locations in the heat exchanger 120.
  • An indoor unit 200 according to Embodiment 2 is different from the indoor unit 100 according to Embodiment 1 in that at least the refrigerant sensor 143 is not provided and a piping member 210 is provided.
  • Fig. 11 is a perspective view of the indoor unit 200 according to the second embodiment.
  • the same part as in Fig. 3 is denoted with the same reference signs and is not described.
  • One end portion 212 of the piping member 210 is placed in the placement space S1.
  • the placement space S1 and the placement space S2 communicate by means of the piping member 210.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Air Conditioning Control Device (AREA)

Claims (4)

  1. Inneneinheit, die ein Gehäuse (101) umfasst, das einen Wärmetauscher (120), der eine Kältemittelleitung umfasst, und ein Gebläse (115) aufnimmt, wobei
    der Wärmetauscher (120) einen Leitungsverbindungsabschnitt (140, 150) umfasst, der Kältemittelleitungen, durch die ein Kältemittel fließt, miteinander verbindet,
    in dem Gehäuse (101) ein Platzierungsraum (S1, S2), in dem der Leitungsverbindungsabschnitt (140, 150) platziert ist, und eine Frontwand (101a) vorgesehen sind, wobei die Frontwand (101a) mit einem Luftauslass (108) versehen ist, der dem Platzierungsraum (S1, S2) zugewandt ist, wobei sich die Frontwand (101a) entlang einer Längsrichtung des Gehäuses (101) erstreckt,
    dadurch gekennzeichnet, dass
    an der Frontwand (101a) ein Kältemittelsensor (180) vorgesehen ist, der das Kältemittel erfasst,
    an einer Position der Frontwand (101a), die dem Platzierungsraum (S1, S2) entspricht, eine von der Frontwand (101a) abnehmbare Montageplatte (175) vorgesehen ist,
    der Kältemittelsensor (180) an einer Innenseite der Montageplatte (175) vorgesehen ist,
    auf der Montageplatte (175) eine Sterilisationseinheit (190) vorgesehen ist, und
    der Kältemittelsensor (180) unterhalb der Sterilisationseinheit (190) vorgesehen ist.
  2. Inneneinheit nach Anspruch 1, wobei
    der Kältemittelsensor (180) abnehmbar an einer Bodenflächenseite des Gehäuses (101) vorgesehen ist, wobei die Bodenflächenseite eine Unterseite ist, wenn die Inneneinheit in einem horizontal hängenden Zustand installiert ist, in dem sich der Luftauslass (108) an der Seite befindet.
  3. Inneneinheit nach Anspruch 1 oder 2, wobei
    der Leitungsverbindungsabschnitt (140, 150) auf jeder der in Längsrichtung gegenüberliegenden Seiten des Wärmetauschers (120) vorgesehen ist,
    in dem Gehäuse (101) mehrere Platzierungsräume (S1, S2) vorgesehen sind, in denen jeweils der Leitungsverbindungsabschnitt (140, 150) angeordnet ist, und
    der Kältemittelsensor (180) in jedem der mehreren Platzierungsräume (S1, S2) vorgesehen ist.
  4. Inneneinheit nach Anspruch 1 oder 2, wobei
    der Leitungsverbindungsabschnitt (140, 150) auf jeder der in Längsrichtung gegenüberliegenden Seiten des Wärmetauschers (120) vorgesehen ist, und
    in dem Gehäuse (101) mehrere Platzierungsräume (S1, S2), in denen jeweils der Leitungsverbindungsabschnitt (140, 150) angeordnet ist, und ein Leitungselement (210) vorgesehen sind, wobei das Leitungselement in den mehreren Platzierungsräumen (S1, S2) in Verbindung steht.
EP22206496.6A 2021-11-11 2022-11-09 Innenraumeinheit Active EP4180727B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2021184013A JP2023071327A (ja) 2021-11-11 2021-11-11 室内機

Publications (2)

Publication Number Publication Date
EP4180727A1 EP4180727A1 (de) 2023-05-17
EP4180727B1 true EP4180727B1 (de) 2025-08-27

Family

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