EP4596982A1 - Outdoor unit of heat pump cycle device, and heat pump cycle device - Google Patents

Outdoor unit of heat pump cycle device, and heat pump cycle device

Info

Publication number
EP4596982A1
EP4596982A1 EP23872602.0A EP23872602A EP4596982A1 EP 4596982 A1 EP4596982 A1 EP 4596982A1 EP 23872602 A EP23872602 A EP 23872602A EP 4596982 A1 EP4596982 A1 EP 4596982A1
Authority
EP
European Patent Office
Prior art keywords
outdoor
fan guard
casing
front panel
pump cycle
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.)
Pending
Application number
EP23872602.0A
Other languages
German (de)
French (fr)
Inventor
Shota SATO
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.)
Fujitsu General Ltd
Original Assignee
Fujitsu General 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 Fujitsu General Ltd filed Critical Fujitsu General Ltd
Publication of EP4596982A1 publication Critical patent/EP4596982A1/en
Pending legal-status Critical Current

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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards

Definitions

  • the present invention relates to an outdoor device of a heat pump cycle device including a fan guard covering an air outlet for blowing air out that is provided on the outside of a casing, and a heat pump cycle device.
  • an outdoor device of a heat pump cycle device includes a casing that stores a heat exchanger, a fan, and the like, and a fan guard that covers an air outlet for blowing out air having been subjected to heat exchange with a refrigerant in a heat exchanger arranged inside the casing, to the outside of the casing.
  • the fan guard has a shape and size that prevent a hand of a human from directly touching the fan, and is attached to a panel of the casing by means such as a screw fastener (for example, refer to Patent Literature 1).
  • Patent Literature 1 JP 2018-151136 A
  • the technique of the disclosure has been devised in view of the foregoing, and aims to provide an outdoor device of a heat pump cycle device and a heat pump cycle device that can improve workability in attaching an upsized fan guard to a panel of a casing.
  • an outdoor device of a heat pump cycle device includes a heat exchanger, and a casing storing a fan that blows air to the heat exchanger, wherein the casing includes a front panel provided with an air outlet for blowing air having been subjected to heat exchange with a refrigerant in the heat exchanger by rotation of the fan, out to an outside of the casing, and a fan guard attached to the front panel to cover the air outlet, and wherein, in a lower portion of the front panel, a support portion on which the fan guard is supported is provided.
  • a heat pump cycle device includes an outdoor device arranged outdoor, and an indoor device arranged indoor, wherein the outdoor device includes a heat exchanger, and a casing storing a fan that blows air to the heat exchanger, wherein the casing includes a front panel provided with an air outlet for blowing air having been subjected to heat exchange with a refrigerant in the heat exchanger by rotation of the fan, out to an outside of the casing, and a fan guard attached to the front panel to cover the air outlet, and wherein, in a lower portion of the front panel, a support portion on which the fan guard is supported is provided.
  • heat pump cycle device of an outdoor device and, heat pump cycle device disclosed by the present application, it is possible to improve workability in attaching an upsized fan guard to a panel of a casing.
  • FIG. 1 is a circuit configuration diagram illustrating an example of a refrigerant circuit and a water circuit of a heat pump cycle device according to the present embodiment.
  • a heat pump cycle device 1 includes an outdoor device 2 and an indoor device 3, and the outdoor device 2 and the indoor device 3 are connected by a water pipe to form a water circuit 4. By circulating cold water or warm water in the water circuit 4 of the outdoor device 2 and the indoor device 3, the heat pump cycle device 1 performs air cooling or air heating of a room (space) where the indoor device 3 is arranged.
  • FIG. 1 exemplifies the heat pump cycle device 1 including one indoor device 3, but the heat pump cycle device 1 may include a plurality of indoor devices 3 connected in parallel to the outdoor device 2.
  • the outdoor device 2 includes a compressor 11, a four-way valve 12, an outdoor heat exchanger (heat exchanger) 13, an outdoor expansion valve 14, a water refrigerant heat exchanger 15, an accumulator 16, and an outdoor fan (fan) 17.
  • the compressor 11, the four-way valve 12, the outdoor heat exchanger 13, the outdoor expansion valve 14, the water refrigerant heat exchanger 15, and the accumulator 16 are connected by a refrigerant pipe 18 to form a refrigerant circuit 10.
  • the refrigerant circuit 10 is completed inside the outdoor device 2 to form a refrigerating cycle.
  • a water pipe 19 is connected to the water refrigerant heat exchanger 15 aside from the refrigerant pipe 18.
  • the water pipe 19 extends to the outside of the outdoor device 2, and is connected to an indoor unit 23 (to be described later) of the indoor device 3 to form the water circuit 4.
  • the compressor 11 is, for example, a variable-capacity compressor of a high-pressure container type that is able to change working capacity, and discharges a high-pressure gas refrigerant by compressing an inhaled low-pressure gas refrigerant.
  • the four-way valve 12 is connected to a refrigerant discharge side of the compressor 11, and the accumulator 16 is connected to a refrigerant suction side.
  • the four-way valve 12 is a valve for changing a direction in which a refrigerant flows in the refrigerant circuit 10, and includes a first port 12A to a fourth port 12D.
  • the first port 12A is connected with the refrigerant discharge side of the compressor 11.
  • a second port 12B is connected with one refrigerant gate 13A of the outdoor heat exchanger 13.
  • a third port 12C is connected with a refrigerant inflow side of the accumulator 16.
  • the fourth port 12D is connected with one refrigerant gate 15A of the water refrigerant heat exchanger 15.
  • a fine tube heat exchanger is used as the outdoor heat exchanger 13.
  • the outdoor heat exchanger 13 performs heat exchange between the refrigerant and outdoor air that is taken into the outdoor device 2 by rotation of an outdoor fan 17.
  • Another refrigerant gate 13B of the outdoor heat exchanger 13 is connected with another refrigerant gate 15B of the water refrigerant heat exchanger 15 via the outdoor expansion valve 14.
  • the outdoor heat exchanger 13 functions as a condenser, and condenses (liquefies) a gas refrigerant.
  • the outdoor heat exchanger 13 functions as an evaporator, and evaporates (gasifies) a liquid refrigerant.
  • the outdoor expansion valve 14 is provided between the other refrigerant gate 13B of the outdoor heat exchanger 13 and the other refrigerant gate 15B of the water refrigerant heat exchanger 15.
  • the outdoor expansion valve 14 is, for example, an electronic expansion valve, and reduces the pressure of (expands) a liquid refrigerant passing through the outdoor expansion valve 14, by adjusting a degree of opening.
  • a plate heat exchanger is used as the water refrigerant heat exchanger 15.
  • the water refrigerant heat exchanger 15 performs heat exchange between refrigerant circulating in the refrigerant circuit 10, and water circulating in the water circuit 4. Further, in a case where the heat pump cycle device 1 performs an air heating operation or a defrosting operation, the water refrigerant heat exchanger 15 functions as an evaporator, and evaporates (gasifies) a liquid refrigerant. Further, in a case where the heat pump cycle device 1 performs an air heating operation, the water refrigerant heat exchanger 15 functions as a condenser, and condenses (liquefies) a gas refrigerant.
  • the water refrigerant heat exchanger 15 includes a water inlet 15C and a water outlet 15D, and the water inlet 15C and the water outlet 15D are connected to the water pipe 19 to constitute a part of the water circuit 4. Further, for example, a circulation pump 21 that circulates water in the water circuit 4 is provided on the water inlet 15C side, and an air vent valve 22 for venting air that has entered the water circuit 4 is provided on the water outlet 15D side.
  • a refrigerant inflow side of the accumulator 16 is connected with the third port 12C of the four-way valve 12, and a refrigerant outflow side is connected with a refrigerant inflow side of the compressor 11.
  • the accumulator 16 is formed as a hollow pressure container, separates the refrigerant, which has flown thereinto, into a gas refrigerant and a liquid refrigerant, and causes only the gas refrigerant to be sucked by the compressor 11.
  • the outdoor fan 17 is arranged near the outdoor heat exchanger 13, and feeds air toward the outdoor heat exchanger 13. Specifically, the outdoor fan 17 takes outdoor air into the outdoor device 2 from a suction port 44 and a suction opening 46 of the outdoor device 2, which will be described later, and discharges the outdoor air that is subjected to heat exchange with the refrigerant in the outdoor heat exchanger 13 to the outside of the outdoor device 2 from an air outlet 41 to be described later.
  • the indoor device 3 includes the indoor unit 23.
  • a floor heating device or a radiator is used as the indoor unit 23.
  • One refrigerant gate 23A of the indoor unit 23 is connected with the water outlet 15D of the water refrigerant heat exchanger 15.
  • another refrigerant gate 23B of the indoor unit 23 is connected with the water inlet 15C of the water refrigerant heat exchanger 15 via the circulation pump 21.
  • the indoor unit 23 is connected with the water refrigerant heat exchanger 15 by the water pipe 19 to form the water circuit 4, and performs heat release or heat absorption in the indoor unit 23 together with water circulating in the water circuit 4, whereby air heating or air cooling of an air-conditioned space where the indoor device 3 is installed is performed.
  • a flow of a refrigerant and a flow of water during the operation of the heat pump cycle device 1 will be described.
  • a broken line arrow in FIG. 1 indicates a flow of a refrigerant during an air heating operation
  • a solid line arrow indicates a flow of a refrigerant during an air cooling operation.
  • the four-way valve 12 performs switching in such a manner that the first port 12A and the fourth port 12D are communicated, and the second port 12B and the third port 12C are communicated.
  • the refrigerant circuit 10 has an air heating cycle in which the water refrigerant heat exchanger 15 functions as a condenser, and the outdoor heat exchanger 13 functions as an evaporator.
  • a refrigerant discharged from the compressor 11 flows into the four-way valve 12, and flows into the water refrigerant heat exchanger 15 from the four-way valve 12.
  • a high-temperature gas refrigerant that has flown into the water refrigerant heat exchanger 15 condenses by performing heat exchange with water circulating in the water circuit 4 of the water refrigerant heat exchanger 15 by the movement of the circulation pump 21.
  • water circulating in the water circuit 4 is heated by the refrigerant in the water refrigerant heat exchanger 15 to become warm water.
  • the warm water flows into the indoor unit 23 of the indoor device 3 through the water pipe 19 of the water circuit 4. Then, by warm water releasing heat in the indoor unit 23, air heating of the inside of a room where the indoor device 3 is installed is performed.
  • a liquid refrigerant that has condensed by performing heat exchange with water in the water refrigerant heat exchanger 15 passes through the outdoor expansion valve 14 and is subjected to pressure reduction, and then flows into the outdoor heat exchanger 13.
  • the refrigerant that has flown into the outdoor heat exchanger 13 evaporates by performing heat exchange with outdoor air that has flown into the outdoor device 2 by the rotation of the outdoor fan 17.
  • the gas refrigerant that has evaporated in the outdoor heat exchanger 13 passes through the four-way valve 12 and the accumulator 16 in this order, and is sucked by the compressor 11 to be compressed again.
  • the four-way valve 12 performs switching in such a manner that the first port 12A and the second port 12B are communicated, and the third port 12C and the fourth port 12D are communicated.
  • the refrigerant circuit 10 has an air cooling cycle in which the water refrigerant heat exchanger 15 functions as an evaporator and the outdoor heat exchanger 13 functions as a condenser.
  • a refrigerant discharged from the compressor 11 flows into the four-way valve 12, and flows into the outdoor heat exchanger 13 from the four-way valve 12.
  • a high-temperature gas refrigerant that has flown into the outdoor heat exchanger 13 condenses by performing heat exchange with indoor air that that is taken into the outdoor device 2 by the rotation of the outdoor fan 17.
  • frost generated in the outdoor heat exchanger 13 is melt by heat of the refrigerant flowing into the outdoor heat exchanger 13.
  • a liquid refrigerant that has condensed by performing heat exchange with water in the outdoor heat exchanger 13 passes through the outdoor expansion valve 14 and is subjected to pressure reduction, and then flows into the water refrigerant heat exchanger 15.
  • a liquid refrigerant that has flown into the water refrigerant heat exchanger 15 evaporates by performing heat exchange with water circulating in the water circuit 4 of the water refrigerant heat exchanger 15 by the operation of the circulation pump 21.
  • water circulating in the water circuit 4 is cooled by the refrigerant in the water refrigerant heat exchanger 15 to become cold water.
  • the cold water flows into the indoor unit 23 of the indoor device 3 through the water pipe 19 of the water circuit 4.
  • the gas refrigerant that has evaporated in the water refrigerant heat exchanger 15 passes through the four-way valve 12 and the accumulator 16 in this order, and is sucked by the compressor 11 to be compressed again.
  • FIG. 2 is an external perspective view of an outdoor device viewed from the front side
  • FIG. 3 is an external perspective view of the outdoor device viewed from the back side
  • FIG. 4 is a perspective view illustrating an internal structure of the outdoor device.
  • directions to be described below such as front-back, up-down, and left-right, indicate directions set in a case where a direction in which air is blown out from the air outlet 41 to be described later in a state in which the outdoor device 2 is installed is assumed to be a front direction, and the outdoor device 2 is viewed from the front side.
  • a "back direction” will be sometimes described as a "back side”.
  • the outdoor device 2 includes a rectangular box-shaped casing 30 of which a dimension in a left-right direction (width direction) is larger than a dimension in a front-back direction (depth direction).
  • the casing 30 includes a bottom plate (bottom panel) 31 arranged in such a manner as to face an installation surface, a top panel 32 arranged superiorly to the bottom plate 31 in a height direction, and a side panel portion 33 that connects the bottom plate 31 and the top panel 32, and serves as a partition between the inside and the outside of the casing 30.
  • the inside of the casing 30 is partitioned into a heat exchange room RA and a machine room RB by a partition plate 34 vertically installed on the bottom plate 31.
  • the outdoor heat exchanger 13 is accommodated on the back side of the heat exchange room RA, and the outdoor fan 17 is accommodated on the front side.
  • the outdoor heat exchanger 13 is formed with being bent into an L-shape when viewed from the top surface (the top panel 32 side), and is supported by the bottom plate 31 with extending along the left side surface side from the back side of the heat exchange room RA.
  • the outdoor fan 17 is attached to a pair of support members 35 and 35 vertically installed on the bottom plate 31.
  • the outdoor fan 17 is a so-called axial flow fan, and by the rotary drive of the outdoor fan 17 by a fan motor (not illustrated), sucks outdoor air into the heat exchange room RA from the outside of the outdoor device 2 (i.e., the suction port 44 (to be described later) formed on the back side of the outdoor heat exchanger 13 and the suction opening 46 (to be described later) formed on the left side surface side. Then, air having been subjected to heat exchange in the outdoor heat exchanger 13 is blown out forward from the air outlet 41 (to be described later) formed on the front side of the heat exchange room RA.
  • the outdoor device 2 is a front-side blow-out type outdoor device that blows out air having been subjected to heat exchange, from the front side.
  • circuit components such as the compressor 11, the accumulator 16, the four-way valve 12 ( FIG. 1 ), and the outdoor expansion valve 14 ( FIG. 1 ) that constitute a part of the refrigerant circuit 10 are arranged, and the circuit components are connected by the refrigerant pipe 18.
  • the compressor 11 and the accumulator 16 are fixed to the bottom plate 31.
  • circuit components such as the water refrigerant heat exchanger 15, the air vent valve 22, and the circulation pump 21 that constitute a part of the water circuit 4 are arranged, and the circuit components are connected by the water pipe 19.
  • the water refrigerant heat exchanger 15 is arranged near a corner portion of the back side and the right side surface side in the lower space of the machine room RB (the casing 30), and a connection port 47 of the water pipe 19, which will be described later, is provided on the back side.
  • an electrical unit 25 including an electrical component for controlling the movements of the outdoor device 2 and the indoor device 3 is arranged.
  • the electrical unit 25 includes a terminal portion 26 for connecting a control board 27 and wires (hereinafter, will also be referred to as electric wires) such as a power wire and a control wire, and is fixed to the partition plate 34.
  • the side panel portion 33 is formed by combining a plurality of panel members.
  • the side panel portion 33 includes a front panel 36, a back panel 37, a right panel 38, a left panel 39, and a service panel 40.
  • the front panel 36, the back panel 37, the right panel 38, and the left panel 39 are formed into an L-shape including two neighboring surfaces of the casing 30, and a corner portion sandwiched between these two surfaces.
  • the front panel 36 integrally includes a first front surface portion 36A that forms a part of the front surface of the casing 30, and a first left side surface portion 36B that forms a part of the left side surface of the casing 30.
  • the back panel 37 integrally includes a first back surface portion 37A that forms a part of the back surface of the casing 30, and a first right side surface portion 37B that forms a part of the right side surface of the casing 30.
  • the right panel 38 integrally includes a second right side surface portion 38A that forms a part of the right side surface of the casing 30, and a second front surface portion 38B that forms a part of the front surface of the casing 30.
  • the left panel 39 integrally includes a second left side surface portion 39A that forms a part of the left side surface of the casing 30, and a second back surface portion 39B that forms a part of the back surface of the casing 30.
  • the first front surface portion 36A of the front panel 36 is arranged on the front side of the heat exchange room RA, and the second front surface portion 38B of the right panel 38 is arranged on the front side of the machine room RB.
  • the first front surface portion 36A and the second front surface portion 38B are adjacently arranged in the left-right direction, and form the front surface of the casing 30.
  • the air outlet 41 from which air having been subjected to heat exchange in the heat exchange room RA is blown out is formed in the first front surface portion 36A.
  • the air outlet 41 has a circular bell mouth 41A, for example, and a part of the outdoor fan 17 is arranged in the bell mouth 41A.
  • a netted fan guard 42 covering the air outlet 41 is provided on the front side of the front panel 36.
  • the fan guard 42 When the fan guard 42 is viewed from the top side, the fan guard 42 is formed into an L-shape, and arranged with extending along the first left side surface portion 36B from the first front surface portion 36A of the front panel 36.
  • the fan guard 42 is fixed to the front panel 36 with a predetermined interval between an upper end portion (end portion on the top side) 42A of the fan guard 42 and the top panel 32.
  • a water shielding plate 43 extending in the left-right (width) direction is provided above the air outlet 41 in the first front surface portion 36A.
  • the first back surface portion 37A of the back panel 37 and the second back surface portion 39B of the left panel 39 are adjacently arranged in the left-right direction with an interval, and form the back surface of the casing 30.
  • the outdoor heat exchanger 13 is arranged in an exposed state between the first back surface portion 37A and the second back surface portion 39B, and the exposed region becomes the suction port 44.
  • a net-like fin guard 45 is provided on the back side of the suction port 44.
  • first back surface portion 37A is arranged on the back side of the machine room RB, and a pair of connection ports 47 and 47 for connecting to the water pipe 19 of the above-described water circuit 4, and a wiring port 48 for introducing a wire (electric wire) connected to the above-described electrical unit 25, into the casing 30 are provided in a lower part of the first back surface portion 37A.
  • the second right side surface portion 38A of the right panel 38 and the first right side surface portion 37B of the back panel 37 are adjacently arranged in the front-back direction with an interval, and form the right side surface (side surface on the machine room RB side) that connects the front surface and the back surface of the casing 30.
  • the above-described service panel 40 is detachably arranged between the second right side surface portion 38A and the first right side surface portion 37B. By removing the service panel 40, it is possible to access the inside of the machine room RB, and easily execute the maintenance of the electrical unit 25 and various circuit components.
  • the second left side surface portion 39A of the left panel 39 and the first left side surface portion 36B of the front panel 36 are adjacently arranged in the front-back direction, and form the left side surface connecting the front surface and the back surface of the casing 30.
  • the second left side surface portion 39A faces a part of the outdoor heat exchanger 13, and a plurality of suction openings 46 is formed in the second left side surface portion 39A.
  • a plurality of handhold portions 51, 52, and 53 for carrying the outdoor device 2 is provided in the side panel portion 33 of the casing 30.
  • These handhold portions 51 to 53 are each arranged near corner portion of the casing 30. That is, the plurality of handhold portions 51 to 53 is respectively provided on the back panel 37, the right panel 38, and the left panel 39 at positions avoiding the service panel 40. Further, in a case where a device in the machine room RB is being operated with the service panel 40 being removed, even if a situation where a wire does not reach the terminal portion 26 during wire connection occurs, for example, it is possible to easily move the outdoor device 2 using the handhold portions 51 to 53.
  • FIG. 5 is a perspective view of a fan guard viewed from the front side
  • FIG. 6 is an external perspective view of an outdoor device from which a fan guard is removed that is viewed from the front side.
  • FIG. 7 is a partial longitudinal sectional view of a support portion of the outdoor device that illustrates a longitudinal section indicated by an A-A line in FIG. 2 and viewed from an X direction.
  • FIG. 8 is a partial longitudinal sectional view of a protruding portion of the outdoor device that illustrates a longitudinal section indicated by a B-B line in FIG. 2 and viewed from the X direction.
  • FIG. 5 is a perspective view of a fan guard viewed from the front side
  • FIG. 6 is an external perspective view of an outdoor device from which a fan guard is removed that is viewed from the front side.
  • FIG. 7 is a partial longitudinal sectional view of a support portion of the outdoor device that illustrates a longitudinal section indicated by an A-A line in FIG. 2 and viewed from an X direction.
  • FIG. 9 is a partial longitudinal sectional view of a left side recessed portion of the outdoor device that illustrates a longitudinal section indicated by a C-C line in FIG. 2 and viewed from a Z direction.
  • the fan guard 42 in a state before being attached to the casing 30 is indicated by dashed-two dotted lines.
  • the fan guard 42 is arranged anteriorly to the front panel 36, and covers the air outlet 41, and prevents an accident that occurs in the outdoor fan 17 by a finger or a foreign substance being inserted from the air outlet 41, for example.
  • the fan guard 42 integrally includes a front surface portion 420 and a left side surface portion (side surface portion) 421, and formed into an L-shape when the fan guard 42 is viewed from the top side.
  • the fan guard 42 is arranged anteriorly to the front panel 36 in a region from the bottom plate 31 to the top panel 32, and fixed to the front panel 36.
  • the front surface portion 420 of the fan guard 42 is fixed to the first front surface portion 36A of the front panel 36
  • the left side surface portion 421 is fixed to the first left side surface portion 36B of the front panel 36.
  • the fan guard 42 is formed by combining like a net a plurality of transverse line materials 60 extending in a transverse direction, and a plurality of longitudinal line materials 61 extending in a longitudinal direction.
  • these transverse line materials 60 and longitudinal line materials 61 are made of iron, and the fan guard 42 is formed by spot-welding contact points between line materials.
  • the plurality of transverse line materials 60 is each formed with being bent into an L-shape.
  • the plurality of transverse line materials 60 is vertically arranged at equal intervals, and the interval between the transverse line materials 60 is set at least to an interval that can prevent a finger from being inserted.
  • each of the plurality of transverse line materials 60 At one end (left end in FIG. 5 ) of each of the plurality of transverse line materials 60, a left bending portion (first transverse bending portion) 601 of which the leading end bends toward the first left side surface portion 36B ( FIG. 2 ) side of the front panel 36 is provided. Further, at another end (right end in FIG. 5 ) of each of the plurality of transverse line materials 60, a right bending portion (second transverse bending portion) 602 of which the leading end bends toward the first front surface portion 36A ( FIG. 2 ) side of the front panel 36 is provided.
  • a left projection portion (first traverse projection portion) 603 continuous to the left bending portion 601 is provided at one end of one transverse line material 60A of the plurality of transverse line materials 60.
  • the left projection portion 603 is formed by bending the leading end of the left bending portion 601 in a step-like manner, and protrudes in the extending direction of the transverse line material 60A (toward the back side in FIG. 5 ).
  • a right projection portion (second traverse projection portion) 604 continuous to the right bending portion 602 is provided at another end of the above-described transverse line material 60A.
  • the right projection portion 604 is formed by bending the leading end of the right bending portion 602 downward, and protrudes downward as-is.
  • the left projection portion 603 and the right projection portion 604 are projections for positioning and temporarily fixing the fan guard 42 to the front panel 36.
  • the left projection portion 603 and the right projection portion 604 are formed in an upper region of a half of a height dimension of the front panel 36, and in the example in FIG. 5 , are formed at a height position of about 1/3 from above.
  • the left projection portion 603 and the right projection portion 604 are formed at both ends of the same transverse line material 60A, but may be formed in different transverse line materials 60A.
  • the left projection portion 603 and the right projection portion 604 are both formed in an upper region of a half of a height dimension of the front panel 36, and are formed at a height position of about 1/3 from above, for example. With this configuration, an operator can easily position and temporarily fix the fan guard 42 to the front panel 36.
  • the plurality of longitudinal line materials 61 are provided to ensure the strength of the fan guard 42 by fixing the transverse line materials 60 to the longitudinal line materials 61 by spot welding.
  • line materials with larger diameter than that of the transverse line materials 60 are used as the longitudinal line materials 61, and an interval between the plurality of longitudinal line materials 61 is formed to be wider than an interval between the transverse line materials 60.
  • fixing longitudinal line materials (partial longitudinal line materials) 61A are arranged at both ends in the left-right direction of the front surface portion 420 of the fan guard 42.
  • the fixing longitudinal line material 61A is arranged at the back end (end on the back side) of the left side surface portion 421 of the fan guard 42.
  • the fixing longitudinal line materials 61A are for attaching and fixing the fan guard 42 to the front panel 36, and include an upper screwing portion 611 and a lower screwing portion 612 formed into a ring shape at both ends in the up-down direction.
  • the upper screwing portion 611 protrudes toward the upside of the fan guard 42.
  • the lower screwing portion 612 protrudes toward the downside of the fan guard 42.
  • the lower screwing portion 612 is provided at the lower end of the fan guard 42, and protrudes downward, and in particular, the lower screwing portion 612 provided at the lower end of the front surface portion 420 functions as a lower projection portion (second lower projection portion) to be described later.
  • the fan guard 42 is fixed to the front panel 36.
  • each of a plurality of longitudinal line materials 61 arranged between two fixing longitudinal line materials 61A in the front surface portion 420 of the fan guard 42 bends toward the first front surface portion 36A ( FIG. 2 ) side of the front panel 36 to form an upper end portion 42A of the above-described fan guard 42.
  • a lower bending portion 613 bending toward the first front surface portion 36A ( FIG. 2 ) side of the front panel 36 is provided.
  • these lower bending portions 613 are bent in such a manner as to be folded back diagonally upward rather than horizontal, and at the leading end of the lower bending portion 613, an auxiliary line material 62 in the traverse direction is provided to keep the strength of the fan guard 42.
  • positioning projection portions 614 continuous to the lower bending portions 613 are provided.
  • the positioning projection portion 614 is formed by bending the leading end of the lower bending portion 613 downward in a step-like manner, and protrudes downward as-is.
  • the positioning projection portion 614 is a projection for positioning the fan guard 42 with respect to the front panel 36, and functions as a lower projection portion (first lower projection portion) to be described later.
  • the lower bending portion 613 is bent toward the first front surface portion 36A of the front panel 36 side in such a manner as to be folded back diagonally upward rather than horizontal.
  • the lower bending portion 613 has a lower portion 613A located at a lowermost position, at a corner portion between the lower bending portion 613 and the longitudinal line material 61 (i.e., front side (part) of the lower bending portion 613).
  • the lower portion 613A of the lower bending portion 613 functions as a placed portion to be placed in the support portion 70 provided at the lower end of the fan guard 42.
  • the above-described positioning projection portion 614 is formed at a position closer to the back side of the fan guard 42 than the lower portion 613A of the lower bending portion 613
  • the lower screwing portion 612 is formed at a position closer to the front side of the fan guard 42 than the lower portion 613A of the lower bending portion 613.
  • the front panel 36 of the casing 30 includes the support portion 70 in which the fan guard 42 is supported in the lower portion of the first front surface portion 36A.
  • the first front surface portion 36A includes a recessed portion 71 recessed backward (the back side of the casing) from a front end portion 36A1 of the first front surface portion 36A, and the support portion 70 is formed in a lower portion wall surface continuous to the front end portion 36A1 in the recessed portion 71.
  • the support portion 70 includes a flat surface supporting the fan guard 42 by having contact with the lower portion 613A of the lower bending portion 613 in the fan guard 42.
  • the support portion 70 has an arc longitudinal sectional shape at a position continuous to the recessed portion 71.
  • a plurality of (three in FIG. 6 ) hole portions (lower acceptance portions) 72 is provided in the support portion 70 with an interval in the left-right direction. These hole portions 72 are holes into which the positioning projection portions 614 provided at the lower ends of the partial longitudinal line materials 61B are to be inserted, and provided at positions corresponding to the positioning projection portions 614.
  • a center hole portion 72 is formed as a circular hole, and the two hole portions 72 on the left and right are formed as elongated holes having a long axis corresponding to the left-right direction.
  • a center positioning projection portion 614 into the center hole portion 72, a center position in the left-right direction of the fan guard 42 can be determined.
  • elongated holes as the hole portions 72 on the left and right, it is possible to absorb a dimension error of the fan guard 42 (positioning projection portions 614 on the left and the right) while determining the center position.
  • a depth dimension of the recessed portion 71 formed in the first front surface portion 36A is a dimension that can fit the fan guard 42 into the recessed portion 71.
  • the lower portion 613A of the lower bending portion 613 of the fan guard 42 has contact with the support portion 70.
  • the positioning projection portion 614 provided posteriorly to the lower portion 613A is inserted into the hole portion 72 formed in the support portion 70.
  • the front surface portion 420 of the fan guard 42 is arranged in such a manner as to be on the same plane as the front end portion 36A1 and the second front surface portion 38B.
  • the lower screwing portion 612 provided anteriorly to the lower portion 613A extends along the front end portion 36A1 of the first front surface portion 36A, and is fixed to the front end portion 36A1 by a bolt (screw) 100.
  • the fan guard 42 is positioned by the positioning projection portion 614 and the lower screwing portion 612 with respect to the front panel 36 in the front-back direction and the left-right direction.
  • the fan guard 42 is fixed on the same plane as the front end portion 36A1 of the first front surface portion 36A, or with being located at a position slightly protruding within an allowable design range.
  • the front panel 36 includes a protruding portion 74 extending in the up-down direction, on the second front surface portion 38B side of the right panel 38 in the first front surface portion 36A.
  • the protruding portion 74 is provided adjacently to the recessed portion 71, and protrudes forward from the recessed portion 71, but formed with being recessed backward from the second front surface portion 38B of the right panel 38.
  • a right hole portion (second traverse acceptance portion) 75 into which the right projection portion 604 is inserted is formed at a position in the fan guard 42 that corresponds to the right projection portion 604. As illustrated in FIG.
  • the right hole portion 75 is formed as an elongated hole having a length dimension in the up-down direction that is longer than a length dimension in the up-down direction of the right projection portion 604 bent downward.
  • the fan guard 42 is prevented from inclining forward (i.e., operator side).
  • the fan guard 42 can be temporarily fixed to the front panel 36, an operator can fix the fan guard 42 without actively holding the fan guard 42 with his/her hand.
  • the front panel 36 includes a left side recessed portion 80 provided in the first left side surface portion 36B.
  • the left side recessed portion 80 is recessed toward the right side surface side of the casing from a left side end portion 36B1 of the first left side surface portion 36B, and extends in the up-down direction.
  • the front panel 36 includes a wall portion 81 that extends in the up-down direction on the second left side surface portion 39A side of the left panel 39 in the first left side surface portion 36B, and connects the left side end portion 36B1 and the left side recessed portion 80.
  • a left hole portion (first traverse acceptance portion) 82 into which the left projection portion 603 is to be inserted is formed at a position in the above-described fan guard 42 that corresponds to the left projection portion 603.
  • the left projection portion 603 of the fan guard 42 is inserted into the left hole portion 82 formed in the above-described wall portion 81.
  • the left projection portion 603 protruding backward the movement in the left-right direction of the fan guard 42 is regulated, and the left hole portion 82 can position the fan guard 42 in the left-right direction.
  • an external opening (movement in the left-right direction) of the fan guard 42 can be regulated, and deviation in the left-right direction between the upper screwing portion 611 and the lower screwing portion 612 formed in the fan guard 42, and screw holes formed in the casing 30 can be prevented, and an operator can execute screwing in a state in which the upper screwing portion 611 and the lower screwing portion 612, and the screw holes are fitted with each other. Furthermore, as illustrated in FIGS.
  • the fan guard 42 by moving the fan guard 42 in an arrow ⁇ direction ( ⁇ direction) with respect to the front panel 36, the right projection portion 604 of the fan guard 42 is inserted into the right hole portion 75 of the above-described protruding portion 74, and the positioning projection portion 614 of the fan guard 42 is inserted into the hole portion 72 formed in the above-described support portion 70.
  • the fan guard 42 lowers with respect to the first front surface portion 36A until the lower portion 613A of the lower bending portion 613 and the support portion 70 come into contact with each other, and supported by the support portion 70.
  • the outdoor device 2 of the heat pump cycle device 1 includes the outdoor heat exchanger 13, and the casing 30 storing the outdoor fan 17 that blows air to the outdoor heat exchanger 13, and the casing 30 includes the front panel 36 provided with the air outlet 41 for blowing air having been subjected to heat exchange with a refrigerant in the outdoor heat exchanger 13 by the rotation of the outdoor fan 17, out to the outside of the casing 30, and the fan guard 42 attached to the front panel 36 to cover the air outlet 41, and in a lower portion of the front panel 36, the support portion 70 on which the fan guard 42 is supported is provided.
  • this configuration for example, because an attachment work of the fan guard 42 can be performed in a state in which the upsized fan guard 42 is supported by the support portion 70 provided in the lower portion of the front panel 36, the workability of this attachment work can be improved.
  • the outdoor device 2 of the heat pump cycle device 1 because the lower portion 613A of the lower bending portion 613 to be placed on the support portion 70, and the positioning projection portion 614 protruding downward, and the lower screwing portion 612 are provided at the lower end of the fan guard 42, in a state in which the lower portion 613A of the lower bending portion 613 is placed on the support portion 70, positioning and attachment of the fan guard 42 can be easily performed.
  • the fan guard 42 includes the positioning projection portion 614 arranged posteriorly to the lower portion 613A of the lower bending portion 613, and the lower screwing portion 612 arranged anteriorly to the lower portion 613A, by the positioning projection portion 614 and the lower screwing portion 612, positioning in the front-back direction and the left-right direction of the fan guard 42 with respect to the front panel 36 can be performed. Thus, it is possible to easily perform the attachment of the fan guard 42.
  • the support portion 70 includes the hole portions 72 into which the positioning projection portions 614 are to be inserted, by inserting the positioning projection portions 614 into these hole portions 72, it is possible to easily perform positioning of the fan guard 42 with respect to the front panel 36 in the front-back direction and the left-right direction.
  • the fan guard 42 is formed by combining like a net a plurality of longitudinal line materials 61 extending in the longitudinal direction, and a plurality of transverse line materials 60 extending in the traverse direction, and the positioning projection portion 614 and the lower screwing portion 612 are formed by protruding lower ends of at least partial longitudinal line materials 61A and 61B.
  • positioning and attachment of the fan guard 42 can be realized by a simple configuration.
  • the fan guard 42 is integrally formed to include the front surface portion 420 covering the air outlet 41 of the front panel 36 of the casing 30, and the left side surface portion 421 covering a part of the left side surface side of the casing 30, and the positioning projection portion 614 is formed at the lower end of the front surface portion 420.
  • the left projection portion 603 and the right projection portion 604 are formed at both ends of a part of the transverse line materials 60A, and the front panel 36 includes the left hole portion 82 into which the left projection portion 603 is to be inserted, and the right hole portion 75 into which the right projection portion 604 is to be inserted, at positions corresponding to the left projection portion 603 and the right projection portion 604.
  • the fan guard 42 when the fan guard 42 is attached to the front panel 36, the fan guard 42 can be positioned and temporarily fixed to the front panel 36. Thus, a screwing work of the fan guard 42 becomes easier, and the fan guard 42 can be easily attached to the front panel 36.
  • the front panel 36 includes the recessed portion 71 in which a part of the front panel 36 is recessed toward the back side of the casing 30, and the support portion 70 is formed in the recessed portion 71, by recessing a part of the front panel 36 toward the back side, the support portion 70 can be easily formed.
  • the fan guard 42 is integrally formed to includes the front surface portion 420 covering the air outlet 41 of the front panel 36 of the casing 30, and the left side surface portion 421 covering a part of the left side surface side of the casing 30, and a depth dimension of the recessed portion 71 is a dimension that can fit the front surface portion 420 into the recessed portion 71, it is possible to fix the fan guard 42 in a state of being positioned on almost the same plane as the front end portion 36A1 of the first front surface portion 36A in the front panel 36. Accordingly, by the fan guard 42 and the front panel 36 becoming almost the same surface, it is possible to enhance the overall sense of unity and improve the design of the outdoor device 2. In addition, in a case where importance is not placed on the design of the outdoor device 2, the fan guard 42 may be arranged with protruding from the front panel 36.
  • the above-described components includes those easily conceivable by those skilled in the art, and those substantially the same. Furthermore, the above-described configurations can be appropriately combined. Further, various omissions, replacements, and modifications of configurations can be made without departing from the gist of the present invention.
  • the front panel 36 to which the fan guard 42 is attached has been described to have a configuration of integrally including the first front surface portion 36A forming a part of the front surface of the casing 30, and the first left side surface portion 36B forming a part of the left side surface of the casing 30, but the front panel needs not include a side surface portion as long as at least a front surface portion is included.
  • the fan guard 42 has been described to have a configuration including the positioning projection portion 614 (first lower projection portion) and the lower screwing portion 612 (second lower projection portion) that function as a lower projection portion, but the lower screwing portion 612 needs not be included as long as at least the positioning projection portion 614 is included.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

An outdoor heat exchanger (13), and a casing (30) storing an outdoor fan (17) that blows air to the outdoor heat exchanger (13) are included, and the casing (30) includes a first front surface portion (36A) provided with an air outlet (41) for blowing air having been subjected to heat exchange with a refrigerant in the outdoor heat exchanger (13) by the rotation of the outdoor fan (17), out to the outside of the casing (30), and a fan guard (42) attached to the first front surface portion (36A) to cover the air outlet (41), and in a lower portion of the first front surface portion (36A), a support portion (70) on which the fan guard (42) is supported is provided.

Description

    Field
  • The present invention relates to an outdoor device of a heat pump cycle device including a fan guard covering an air outlet for blowing air out that is provided on the outside of a casing, and a heat pump cycle device. Background
  • Generally, an outdoor device of a heat pump cycle device includes a casing that stores a heat exchanger, a fan, and the like, and a fan guard that covers an air outlet for blowing out air having been subjected to heat exchange with a refrigerant in a heat exchanger arranged inside the casing, to the outside of the casing. In the outdoor device of this type, the fan guard has a shape and size that prevent a hand of a human from directly touching the fan, and is attached to a panel of the casing by means such as a screw fastener (for example, refer to Patent Literature 1).
    • Citation List Patent Literature
  • Patent Literature 1: JP 2018-151136 A
    • Summary Technical Problem
  • Meanwhile, in recent years, a heat exchanger has been upsized to increase a heat-transfer area more than that of a conventional outdoor device because high energy saving performance of a heat pump cycle device has been demanded, and an air outlet and a fan guard of an outdoor device tend to be accordingly upsized as well. Because the weight of the fan guard increases in accordance with upsizing, the fan guard itself becomes difficult to be handled. Thus, there has been a problem that difficulty in an attachment work of the fan guard increases, such as a positional shift between an attachment hole of the fan guard and a screw hole of a panel that occurs when the fan guard is attached to the panel of a casing using a screw as in the conventional technique.
  • The technique of the disclosure has been devised in view of the foregoing, and aims to provide an outdoor device of a heat pump cycle device and a heat pump cycle device that can improve workability in attaching an upsized fan guard to a panel of a casing.
    • Solution to Problem
  • According to an aspect of an embodiment, an outdoor device of a heat pump cycle device, the outdoor device includes a heat exchanger, and a casing storing a fan that blows air to the heat exchanger, wherein the casing includes a front panel provided with an air outlet for blowing air having been subjected to heat exchange with a refrigerant in the heat exchanger by rotation of the fan, out to an outside of the casing, and a fan guard attached to the front panel to cover the air outlet, and wherein, in a lower portion of the front panel, a support portion on which the fan guard is supported is provided.
  • According to an aspect of an embodiment, a heat pump cycle device includes an outdoor device arranged outdoor, and an indoor device arranged indoor, wherein the outdoor device includes a heat exchanger, and a casing storing a fan that blows air to the heat exchanger, wherein the casing includes a front panel provided with an air outlet for blowing air having been subjected to heat exchange with a refrigerant in the heat exchanger by rotation of the fan, out to an outside of the casing, and a fan guard attached to the front panel to cover the air outlet, and wherein, in a lower portion of the front panel, a support portion on which the fan guard is supported is provided.
    • Advantageous Effects of Invention
  • According to an aspect of a heat pump cycle device of an outdoor device, and, heat pump cycle device disclosed by the present application, it is possible to improve workability in attaching an upsized fan guard to a panel of a casing.
    • Brief Description of Drawings
    • FIG. 1 is a circuit configuration diagram illustrating an example of a refrigerant circuit and a water circuit of a heat pump cycle device according to the present embodiment.
    • FIG. 2 is an external perspective view of an outdoor device viewed from a front side.
    • FIG. 3 is an external perspective view of an outdoor device viewed from a rear side.
    • FIG. 4 is a perspective view illustrating an internal structure of the outdoor device.
    • FIG. 5 is a perspective view of a fan guard viewed from a front side.
    • FIG. 6 is an external perspective view of an outdoor device from which the fan guard is removed that is viewed from the front side.
    • FIG. 7 is a partial longitudinal sectional view of a support portion of the outdoor device that illustrates a longitudinal section indicated by an A-A line in FIG. 2 and viewed from an X direction.
    • FIG. 8 is a partial longitudinal sectional view of a protruding portion of the outdoor device that illustrates a longitudinal section indicated by a B-B line in FIG. 2 and viewed from the X direction.
    • FIG. 9 is a partial longitudinal sectional view of a left side recessed portion of the outdoor device that illustrates a longitudinal section indicated by a C-C line in FIG. 2 and viewed from a Z direction.
    Description of Embodiments
  • Hereinafter, an embodiment of an outdoor device of a heat pump cycle device disclosed by the present application will be described in detail based on the drawings. In addition, the disclosed technique is not limited by the present embodiment. Further, the following embodiment may be appropriately modified without causing a contradiction.
    • Embodiment <Configuration of Heat Pump Cycle Device>
  • FIG. 1 is a circuit configuration diagram illustrating an example of a refrigerant circuit and a water circuit of a heat pump cycle device according to the present embodiment. A heat pump cycle device 1 includes an outdoor device 2 and an indoor device 3, and the outdoor device 2 and the indoor device 3 are connected by a water pipe to form a water circuit 4. By circulating cold water or warm water in the water circuit 4 of the outdoor device 2 and the indoor device 3, the heat pump cycle device 1 performs air cooling or air heating of a room (space) where the indoor device 3 is arranged. In addition, FIG. 1 exemplifies the heat pump cycle device 1 including one indoor device 3, but the heat pump cycle device 1 may include a plurality of indoor devices 3 connected in parallel to the outdoor device 2.
  • As illustrated in FIG. 1, the outdoor device 2 includes a compressor 11, a four-way valve 12, an outdoor heat exchanger (heat exchanger) 13, an outdoor expansion valve 14, a water refrigerant heat exchanger 15, an accumulator 16, and an outdoor fan (fan) 17. The compressor 11, the four-way valve 12, the outdoor heat exchanger 13, the outdoor expansion valve 14, the water refrigerant heat exchanger 15, and the accumulator 16 are connected by a refrigerant pipe 18 to form a refrigerant circuit 10. The refrigerant circuit 10 is completed inside the outdoor device 2 to form a refrigerating cycle. Further, a water pipe 19 is connected to the water refrigerant heat exchanger 15 aside from the refrigerant pipe 18. The water pipe 19 extends to the outside of the outdoor device 2, and is connected to an indoor unit 23 (to be described later) of the indoor device 3 to form the water circuit 4.
  • The compressor 11 is, for example, a variable-capacity compressor of a high-pressure container type that is able to change working capacity, and discharges a high-pressure gas refrigerant by compressing an inhaled low-pressure gas refrigerant. The four-way valve 12 is connected to a refrigerant discharge side of the compressor 11, and the accumulator 16 is connected to a refrigerant suction side.
  • The four-way valve 12 is a valve for changing a direction in which a refrigerant flows in the refrigerant circuit 10, and includes a first port 12A to a fourth port 12D. The first port 12A is connected with the refrigerant discharge side of the compressor 11. A second port 12B is connected with one refrigerant gate 13A of the outdoor heat exchanger 13. A third port 12C is connected with a refrigerant inflow side of the accumulator 16. Then, the fourth port 12D is connected with one refrigerant gate 15A of the water refrigerant heat exchanger 15.
  • For example, a fine tube heat exchanger is used as the outdoor heat exchanger 13. The outdoor heat exchanger 13 performs heat exchange between the refrigerant and outdoor air that is taken into the outdoor device 2 by rotation of an outdoor fan 17. Another refrigerant gate 13B of the outdoor heat exchanger 13 is connected with another refrigerant gate 15B of the water refrigerant heat exchanger 15 via the outdoor expansion valve 14. In a case where the heat pump cycle device 1 performs an air cooling operation, the outdoor heat exchanger 13 functions as a condenser, and condenses (liquefies) a gas refrigerant. Further, in a case where the heat pump cycle device 1 performs an air heating operation, the outdoor heat exchanger 13 functions as an evaporator, and evaporates (gasifies) a liquid refrigerant.
  • The outdoor expansion valve 14 is provided between the other refrigerant gate 13B of the outdoor heat exchanger 13 and the other refrigerant gate 15B of the water refrigerant heat exchanger 15. The outdoor expansion valve 14 is, for example, an electronic expansion valve, and reduces the pressure of (expands) a liquid refrigerant passing through the outdoor expansion valve 14, by adjusting a degree of opening.
  • For example, a plate heat exchanger is used as the water refrigerant heat exchanger 15. The water refrigerant heat exchanger 15 performs heat exchange between refrigerant circulating in the refrigerant circuit 10, and water circulating in the water circuit 4. Further, in a case where the heat pump cycle device 1 performs an air heating operation or a defrosting operation, the water refrigerant heat exchanger 15 functions as an evaporator, and evaporates (gasifies) a liquid refrigerant. Further, in a case where the heat pump cycle device 1 performs an air heating operation, the water refrigerant heat exchanger 15 functions as a condenser, and condenses (liquefies) a gas refrigerant. The water refrigerant heat exchanger 15 includes a water inlet 15C and a water outlet 15D, and the water inlet 15C and the water outlet 15D are connected to the water pipe 19 to constitute a part of the water circuit 4. Further, for example, a circulation pump 21 that circulates water in the water circuit 4 is provided on the water inlet 15C side, and an air vent valve 22 for venting air that has entered the water circuit 4 is provided on the water outlet 15D side.
  • A refrigerant inflow side of the accumulator 16 is connected with the third port 12C of the four-way valve 12, and a refrigerant outflow side is connected with a refrigerant inflow side of the compressor 11. The accumulator 16 is formed as a hollow pressure container, separates the refrigerant, which has flown thereinto, into a gas refrigerant and a liquid refrigerant, and causes only the gas refrigerant to be sucked by the compressor 11.
  • The outdoor fan 17 is arranged near the outdoor heat exchanger 13, and feeds air toward the outdoor heat exchanger 13. Specifically, the outdoor fan 17 takes outdoor air into the outdoor device 2 from a suction port 44 and a suction opening 46 of the outdoor device 2, which will be described later, and discharges the outdoor air that is subjected to heat exchange with the refrigerant in the outdoor heat exchanger 13 to the outside of the outdoor device 2 from an air outlet 41 to be described later.
  • On the other hand, the indoor device 3 includes the indoor unit 23. For example, a floor heating device or a radiator is used as the indoor unit 23. One refrigerant gate 23A of the indoor unit 23 is connected with the water outlet 15D of the water refrigerant heat exchanger 15. Further, another refrigerant gate 23B of the indoor unit 23 is connected with the water inlet 15C of the water refrigerant heat exchanger 15 via the circulation pump 21. With this configuration, the indoor unit 23 is connected with the water refrigerant heat exchanger 15 by the water pipe 19 to form the water circuit 4, and performs heat release or heat absorption in the indoor unit 23 together with water circulating in the water circuit 4, whereby air heating or air cooling of an air-conditioned space where the indoor device 3 is installed is performed.
    • <Movement during Operation>
  • Next, a flow of a refrigerant and a flow of water during the operation of the heat pump cycle device 1 will be described. In addition, a broken line arrow in FIG. 1 indicates a flow of a refrigerant during an air heating operation, and a solid line arrow indicates a flow of a refrigerant during an air cooling operation.
  • In a case where the heat pump cycle device 1 performs an air heating operation, the four-way valve 12 performs switching in such a manner that the first port 12A and the fourth port 12D are communicated, and the second port 12B and the third port 12C are communicated. With this configuration, the refrigerant circuit 10 has an air heating cycle in which the water refrigerant heat exchanger 15 functions as a condenser, and the outdoor heat exchanger 13 functions as an evaporator.
  • If the compressor 11 is driven when the refrigerant circuit 10 is in the above-described state, a refrigerant discharged from the compressor 11 flows into the four-way valve 12, and flows into the water refrigerant heat exchanger 15 from the four-way valve 12. A high-temperature gas refrigerant that has flown into the water refrigerant heat exchanger 15 condenses by performing heat exchange with water circulating in the water circuit 4 of the water refrigerant heat exchanger 15 by the movement of the circulation pump 21. On the other hand, water circulating in the water circuit 4 is heated by the refrigerant in the water refrigerant heat exchanger 15 to become warm water. The warm water flows into the indoor unit 23 of the indoor device 3 through the water pipe 19 of the water circuit 4. Then, by warm water releasing heat in the indoor unit 23, air heating of the inside of a room where the indoor device 3 is installed is performed.
  • A liquid refrigerant that has condensed by performing heat exchange with water in the water refrigerant heat exchanger 15 passes through the outdoor expansion valve 14 and is subjected to pressure reduction, and then flows into the outdoor heat exchanger 13. The refrigerant that has flown into the outdoor heat exchanger 13 evaporates by performing heat exchange with outdoor air that has flown into the outdoor device 2 by the rotation of the outdoor fan 17. The gas refrigerant that has evaporated in the outdoor heat exchanger 13 passes through the four-way valve 12 and the accumulator 16 in this order, and is sucked by the compressor 11 to be compressed again.
  • Further, in a case where the heat pump cycle device 1 performs an air cooling operation or a defrosting operation, the four-way valve 12 performs switching in such a manner that the first port 12A and the second port 12B are communicated, and the third port 12C and the fourth port 12D are communicated. With this configuration, the refrigerant circuit 10 has an air cooling cycle in which the water refrigerant heat exchanger 15 functions as an evaporator and the outdoor heat exchanger 13 functions as a condenser.
  • If the compressor 11 is driven when the refrigerant circuit 10 is in the above-described state, a refrigerant discharged from the compressor 11 flows into the four-way valve 12, and flows into the outdoor heat exchanger 13 from the four-way valve 12. A high-temperature gas refrigerant that has flown into the outdoor heat exchanger 13 condenses by performing heat exchange with indoor air that that is taken into the outdoor device 2 by the rotation of the outdoor fan 17. In addition, in a case where a defrosting operation is being performed, frost generated in the outdoor heat exchanger 13 is melt by heat of the refrigerant flowing into the outdoor heat exchanger 13.
  • A liquid refrigerant that has condensed by performing heat exchange with water in the outdoor heat exchanger 13 passes through the outdoor expansion valve 14 and is subjected to pressure reduction, and then flows into the water refrigerant heat exchanger 15. A liquid refrigerant that has flown into the water refrigerant heat exchanger 15 evaporates by performing heat exchange with water circulating in the water circuit 4 of the water refrigerant heat exchanger 15 by the operation of the circulation pump 21. On the other hand, water circulating in the water circuit 4 is cooled by the refrigerant in the water refrigerant heat exchanger 15 to become cold water. The cold water flows into the indoor unit 23 of the indoor device 3 through the water pipe 19 of the water circuit 4. Then, by heat of the inside of a room is being absorbed by the cold water in the indoor unit 23, air cooling of the inside of a room where the indoor device 3 is installed is performed. In addition, in a case where a defrosting operation is being performed, in order to suppress a decline in indoor temperature, the circulation pump 21 is stopped and circulation of water in the water circuit 4 is stopped.
  • The gas refrigerant that has evaporated in the water refrigerant heat exchanger 15 passes through the four-way valve 12 and the accumulator 16 in this order, and is sucked by the compressor 11 to be compressed again.
    • <Structure of Outdoor Device>
  • Next, the appearance and an internal structure of the outdoor device 2 will be described. FIG. 2 is an external perspective view of an outdoor device viewed from the front side, and FIG. 3 is an external perspective view of the outdoor device viewed from the back side. FIG. 4 is a perspective view illustrating an internal structure of the outdoor device. In addition, directions to be described below, such as front-back, up-down, and left-right, indicate directions set in a case where a direction in which air is blown out from the air outlet 41 to be described later in a state in which the outdoor device 2 is installed is assumed to be a front direction, and the outdoor device 2 is viewed from the front side. In addition, a "back direction" will be sometimes described as a "back side".
  • As illustrated in FIGS. 2 and 3, the outdoor device 2 includes a rectangular box-shaped casing 30 of which a dimension in a left-right direction (width direction) is larger than a dimension in a front-back direction (depth direction). The casing 30 includes a bottom plate (bottom panel) 31 arranged in such a manner as to face an installation surface, a top panel 32 arranged superiorly to the bottom plate 31 in a height direction, and a side panel portion 33 that connects the bottom plate 31 and the top panel 32, and serves as a partition between the inside and the outside of the casing 30.
  • As illustrated in FIG. 4, the inside of the casing 30 is partitioned into a heat exchange room RA and a machine room RB by a partition plate 34 vertically installed on the bottom plate 31. In the heat exchange room RA, the outdoor heat exchanger 13 is accommodated on the back side of the heat exchange room RA, and the outdoor fan 17 is accommodated on the front side. The outdoor heat exchanger 13 is formed with being bent into an L-shape when viewed from the top surface (the top panel 32 side), and is supported by the bottom plate 31 with extending along the left side surface side from the back side of the heat exchange room RA.
  • The outdoor fan 17 is attached to a pair of support members 35 and 35 vertically installed on the bottom plate 31. The outdoor fan 17 is a so-called axial flow fan, and by the rotary drive of the outdoor fan 17 by a fan motor (not illustrated), sucks outdoor air into the heat exchange room RA from the outside of the outdoor device 2 (i.e., the suction port 44 (to be described later) formed on the back side of the outdoor heat exchanger 13 and the suction opening 46 (to be described later) formed on the left side surface side. Then, air having been subjected to heat exchange in the outdoor heat exchanger 13 is blown out forward from the air outlet 41 (to be described later) formed on the front side of the heat exchange room RA. In this manner, the outdoor device 2 is a front-side blow-out type outdoor device that blows out air having been subjected to heat exchange, from the front side.
  • In a lower space of the machine room RB, circuit components such as the compressor 11, the accumulator 16, the four-way valve 12 (FIG. 1), and the outdoor expansion valve 14 (FIG. 1) that constitute a part of the refrigerant circuit 10 are arranged, and the circuit components are connected by the refrigerant pipe 18. The compressor 11 and the accumulator 16 are fixed to the bottom plate 31. Further, in a lower space of the machine room RB, circuit components such as the water refrigerant heat exchanger 15, the air vent valve 22, and the circulation pump 21 that constitute a part of the water circuit 4 are arranged, and the circuit components are connected by the water pipe 19. In this embodiment, the water refrigerant heat exchanger 15 is arranged near a corner portion of the back side and the right side surface side in the lower space of the machine room RB (the casing 30), and a connection port 47 of the water pipe 19, which will be described later, is provided on the back side.
  • Further, in an upper space of the machine room RB, an electrical unit 25 including an electrical component for controlling the movements of the outdoor device 2 and the indoor device 3 is arranged. The electrical unit 25 includes a terminal portion 26 for connecting a control board 27 and wires (hereinafter, will also be referred to as electric wires) such as a power wire and a control wire, and is fixed to the partition plate 34.
  • Next, the side panel portion 33 of the casing 30 will be described. The side panel portion 33 is formed by combining a plurality of panel members. In the present embodiment, as illustrated in FIGS. 2 and 3, the side panel portion 33 includes a front panel 36, a back panel 37, a right panel 38, a left panel 39, and a service panel 40. When the casing 30 is viewed from the top surface, the front panel 36, the back panel 37, the right panel 38, and the left panel 39 are formed into an L-shape including two neighboring surfaces of the casing 30, and a corner portion sandwiched between these two surfaces.
  • Specifically, the front panel 36 integrally includes a first front surface portion 36A that forms a part of the front surface of the casing 30, and a first left side surface portion 36B that forms a part of the left side surface of the casing 30. The back panel 37 integrally includes a first back surface portion 37A that forms a part of the back surface of the casing 30, and a first right side surface portion 37B that forms a part of the right side surface of the casing 30. The right panel 38 integrally includes a second right side surface portion 38A that forms a part of the right side surface of the casing 30, and a second front surface portion 38B that forms a part of the front surface of the casing 30. The left panel 39 integrally includes a second left side surface portion 39A that forms a part of the left side surface of the casing 30, and a second back surface portion 39B that forms a part of the back surface of the casing 30.
  • The first front surface portion 36A of the front panel 36 is arranged on the front side of the heat exchange room RA, and the second front surface portion 38B of the right panel 38 is arranged on the front side of the machine room RB. The first front surface portion 36A and the second front surface portion 38B are adjacently arranged in the left-right direction, and form the front surface of the casing 30. In the first front surface portion 36A, the air outlet 41 from which air having been subjected to heat exchange in the heat exchange room RA is blown out is formed. The air outlet 41 has a circular bell mouth 41A, for example, and a part of the outdoor fan 17 is arranged in the bell mouth 41A. A netted fan guard 42 covering the air outlet 41 is provided on the front side of the front panel 36. When the fan guard 42 is viewed from the top side, the fan guard 42 is formed into an L-shape, and arranged with extending along the first left side surface portion 36B from the first front surface portion 36A of the front panel 36. The fan guard 42 is fixed to the front panel 36 with a predetermined interval between an upper end portion (end portion on the top side) 42A of the fan guard 42 and the top panel 32. Further, a water shielding plate 43 extending in the left-right (width) direction is provided above the air outlet 41 in the first front surface portion 36A.
  • The first back surface portion 37A of the back panel 37 and the second back surface portion 39B of the left panel 39 are adjacently arranged in the left-right direction with an interval, and form the back surface of the casing 30. The outdoor heat exchanger 13 is arranged in an exposed state between the first back surface portion 37A and the second back surface portion 39B, and the exposed region becomes the suction port 44. A net-like fin guard 45 is provided on the back side of the suction port 44. Further, the first back surface portion 37A is arranged on the back side of the machine room RB, and a pair of connection ports 47 and 47 for connecting to the water pipe 19 of the above-described water circuit 4, and a wiring port 48 for introducing a wire (electric wire) connected to the above-described electrical unit 25, into the casing 30 are provided in a lower part of the first back surface portion 37A.
  • The second right side surface portion 38A of the right panel 38 and the first right side surface portion 37B of the back panel 37 are adjacently arranged in the front-back direction with an interval, and form the right side surface (side surface on the machine room RB side) that connects the front surface and the back surface of the casing 30. The above-described service panel 40 is detachably arranged between the second right side surface portion 38A and the first right side surface portion 37B. By removing the service panel 40, it is possible to access the inside of the machine room RB, and easily execute the maintenance of the electrical unit 25 and various circuit components.
  • The second left side surface portion 39A of the left panel 39 and the first left side surface portion 36B of the front panel 36 are adjacently arranged in the front-back direction, and form the left side surface connecting the front surface and the back surface of the casing 30. The second left side surface portion 39A faces a part of the outdoor heat exchanger 13, and a plurality of suction openings 46 is formed in the second left side surface portion 39A.
  • Further, because the outdoor device 2 is a heavy device, a plurality of handhold portions 51, 52, and 53 for carrying the outdoor device 2 is provided in the side panel portion 33 of the casing 30. These handhold portions 51 to 53 are each arranged near corner portion of the casing 30. That is, the plurality of handhold portions 51 to 53 is respectively provided on the back panel 37, the right panel 38, and the left panel 39 at positions avoiding the service panel 40. Further, in a case where a device in the machine room RB is being operated with the service panel 40 being removed, even if a situation where a wire does not reach the terminal portion 26 during wire connection occurs, for example, it is possible to easily move the outdoor device 2 using the handhold portions 51 to 53.
    • <Fan Guard>
  • Next, the fan guard 42 will be described. FIG. 5 is a perspective view of a fan guard viewed from the front side, and FIG. 6 is an external perspective view of an outdoor device from which a fan guard is removed that is viewed from the front side. FIG. 7 is a partial longitudinal sectional view of a support portion of the outdoor device that illustrates a longitudinal section indicated by an A-A line in FIG. 2 and viewed from an X direction. FIG. 8 is a partial longitudinal sectional view of a protruding portion of the outdoor device that illustrates a longitudinal section indicated by a B-B line in FIG. 2 and viewed from the X direction. FIG. 9 is a partial longitudinal sectional view of a left side recessed portion of the outdoor device that illustrates a longitudinal section indicated by a C-C line in FIG. 2 and viewed from a Z direction. In addition, in FIGS. 7 to 9, the fan guard 42 in a state before being attached to the casing 30 is indicated by dashed-two dotted lines. The fan guard 42 is arranged anteriorly to the front panel 36, and covers the air outlet 41, and prevents an accident that occurs in the outdoor fan 17 by a finger or a foreign substance being inserted from the air outlet 41, for example. As illustrated in FIG. 5, the fan guard 42 integrally includes a front surface portion 420 and a left side surface portion (side surface portion) 421, and formed into an L-shape when the fan guard 42 is viewed from the top side.
  • Further, as illustrated in FIG. 2, the fan guard 42 is arranged anteriorly to the front panel 36 in a region from the bottom plate 31 to the top panel 32, and fixed to the front panel 36. In the example in FIG. 2, the front surface portion 420 of the fan guard 42 is fixed to the first front surface portion 36A of the front panel 36, and the left side surface portion 421 is fixed to the first left side surface portion 36B of the front panel 36.
  • As illustrated in FIG. 5, the fan guard 42 is formed by combining like a net a plurality of transverse line materials 60 extending in a transverse direction, and a plurality of longitudinal line materials 61 extending in a longitudinal direction. In the present embodiment, these transverse line materials 60 and longitudinal line materials 61 are made of iron, and the fan guard 42 is formed by spot-welding contact points between line materials. The plurality of transverse line materials 60 is each formed with being bent into an L-shape. The plurality of transverse line materials 60 is vertically arranged at equal intervals, and the interval between the transverse line materials 60 is set at least to an interval that can prevent a finger from being inserted.
  • At one end (left end in FIG. 5) of each of the plurality of transverse line materials 60, a left bending portion (first transverse bending portion) 601 of which the leading end bends toward the first left side surface portion 36B (FIG. 2) side of the front panel 36 is provided. Further, at another end (right end in FIG. 5) of each of the plurality of transverse line materials 60, a right bending portion (second transverse bending portion) 602 of which the leading end bends toward the first front surface portion 36A (FIG. 2) side of the front panel 36 is provided. Furthermore, in the present embodiment, at one end of one transverse line material 60A of the plurality of transverse line materials 60, a left projection portion (first traverse projection portion) 603 continuous to the left bending portion 601 is provided. The left projection portion 603 is formed by bending the leading end of the left bending portion 601 in a step-like manner, and protrudes in the extending direction of the transverse line material 60A (toward the back side in FIG. 5). Further, at another end of the above-described transverse line material 60A, a right projection portion (second traverse projection portion) 604 continuous to the right bending portion 602 is provided. The right projection portion 604 is formed by bending the leading end of the right bending portion 602 downward, and protrudes downward as-is.
  • The left projection portion 603 and the right projection portion 604 are projections for positioning and temporarily fixing the fan guard 42 to the front panel 36. The left projection portion 603 and the right projection portion 604 are formed in an upper region of a half of a height dimension of the front panel 36, and in the example in FIG. 5, are formed at a height position of about 1/3 from above. In addition, in the example in FIG. 5, the left projection portion 603 and the right projection portion 604 are formed at both ends of the same transverse line material 60A, but may be formed in different transverse line materials 60A. In this case, it is preferable that the left projection portion 603 and the right projection portion 604 are both formed in an upper region of a half of a height dimension of the front panel 36, and are formed at a height position of about 1/3 from above, for example. With this configuration, an operator can easily position and temporarily fix the fan guard 42 to the front panel 36.
  • On the other hand, the plurality of longitudinal line materials 61 are provided to ensure the strength of the fan guard 42 by fixing the transverse line materials 60 to the longitudinal line materials 61 by spot welding. In the present embodiment, line materials with larger diameter than that of the transverse line materials 60 are used as the longitudinal line materials 61, and an interval between the plurality of longitudinal line materials 61 is formed to be wider than an interval between the transverse line materials 60. As illustrated in FIG. 5, among the plurality of longitudinal line materials 61, fixing longitudinal line materials (partial longitudinal line materials) 61A are arranged at both ends in the left-right direction of the front surface portion 420 of the fan guard 42. Further, the fixing longitudinal line material 61A is arranged at the back end (end on the back side) of the left side surface portion 421 of the fan guard 42. The fixing longitudinal line materials 61A are for attaching and fixing the fan guard 42 to the front panel 36, and include an upper screwing portion 611 and a lower screwing portion 612 formed into a ring shape at both ends in the up-down direction. The upper screwing portion 611 protrudes toward the upside of the fan guard 42. The lower screwing portion 612 protrudes toward the downside of the fan guard 42. In the present embodiment, the lower screwing portion 612 is provided at the lower end of the fan guard 42, and protrudes downward, and in particular, the lower screwing portion 612 provided at the lower end of the front surface portion 420 functions as a lower projection portion (second lower projection portion) to be described later. By screwing the upper screwing portion 611 and the lower screwing portion 612 to the front panel 36, the fan guard 42 is fixed to the front panel 36.
  • Further, an upper end of each of a plurality of longitudinal line materials 61 arranged between two fixing longitudinal line materials 61A in the front surface portion 420 of the fan guard 42 bends toward the first front surface portion 36A (FIG. 2) side of the front panel 36 to form an upper end portion 42A of the above-described fan guard 42.
  • Further, at the lower end of each of a plurality of longitudinal line materials 61 arranged between two fixing longitudinal line materials 61A in the front surface portion 420 of the fan guard 42, a lower bending portion 613 bending toward the first front surface portion 36A (FIG. 2) side of the front panel 36 is provided. In the present embodiment, in a case where an outdoor device is installed on a horizontal surface, these lower bending portions 613 are bent in such a manner as to be folded back diagonally upward rather than horizontal, and at the leading end of the lower bending portion 613, an auxiliary line material 62 in the traverse direction is provided to keep the strength of the fan guard 42.
  • Further, at lower ends of partial (three in FIG. 5) longitudinal line materials 61B of the above-described plurality of longitudinal line materials 61, positioning projection portions 614 continuous to the lower bending portions 613 are provided. The positioning projection portion 614 is formed by bending the leading end of the lower bending portion 613 downward in a step-like manner, and protrudes downward as-is. The positioning projection portion 614 is a projection for positioning the fan guard 42 with respect to the front panel 36, and functions as a lower projection portion (first lower projection portion) to be described later.
  • Further, the lower bending portion 613 is bent toward the first front surface portion 36A of the front panel 36 side in such a manner as to be folded back diagonally upward rather than horizontal. Thus, the lower bending portion 613 has a lower portion 613A located at a lowermost position, at a corner portion between the lower bending portion 613 and the longitudinal line material 61 (i.e., front side (part) of the lower bending portion 613). When the fan guard 42 is arranged on the front panel 36, the lower portion 613A is placed on a support portion 70 to be described later that is provided in the first front surface portion 36A of the front panel 36, and the fan guard 42 is supported by the support portion 70. Thus, in the present embodiment, the lower portion 613A of the lower bending portion 613 functions as a placed portion to be placed in the support portion 70 provided at the lower end of the fan guard 42. Further, the above-described positioning projection portion 614 is formed at a position closer to the back side of the fan guard 42 than the lower portion 613A of the lower bending portion 613, and the lower screwing portion 612 is formed at a position closer to the front side of the fan guard 42 than the lower portion 613A of the lower bending portion 613. With this configuration, the front surface portion 420 of the fan guard 42 can be provided on the same surface as an external panel, or at a position slightly protruding within an allowable design range, and the fan guard 42 can be appropriately arranged.
  • As illustrated in FIG. 6, the front panel 36 of the casing 30 includes the support portion 70 in which the fan guard 42 is supported in the lower portion of the first front surface portion 36A. Specifically, the first front surface portion 36A includes a recessed portion 71 recessed backward (the back side of the casing) from a front end portion 36A1 of the first front surface portion 36A, and the support portion 70 is formed in a lower portion wall surface continuous to the front end portion 36A1 in the recessed portion 71.
  • The support portion 70 includes a flat surface supporting the fan guard 42 by having contact with the lower portion 613A of the lower bending portion 613 in the fan guard 42. In addition, as illustrated in FIG. 7, the support portion 70 has an arc longitudinal sectional shape at a position continuous to the recessed portion 71. Further, as illustrated in FIG. 6, a plurality of (three in FIG. 6) hole portions (lower acceptance portions) 72 is provided in the support portion 70 with an interval in the left-right direction. These hole portions 72 are holes into which the positioning projection portions 614 provided at the lower ends of the partial longitudinal line materials 61B are to be inserted, and provided at positions corresponding to the positioning projection portions 614. Further, in the present embodiment, among the three hole portions 72, a center hole portion 72 is formed as a circular hole, and the two hole portions 72 on the left and right are formed as elongated holes having a long axis corresponding to the left-right direction. Thus, by inserting a center positioning projection portion 614 into the center hole portion 72, a center position in the left-right direction of the fan guard 42 can be determined. Further, by forming elongated holes as the hole portions 72 on the left and right, it is possible to absorb a dimension error of the fan guard 42 (positioning projection portions 614 on the left and the right) while determining the center position.
  • Further, as illustrated in FIG. 7, a depth dimension of the recessed portion 71 formed in the first front surface portion 36A is a dimension that can fit the fan guard 42 into the recessed portion 71. Specifically, when the fan guard 42 is arranged on the support portion 70, the lower portion 613A of the lower bending portion 613 of the fan guard 42 has contact with the support portion 70. Further, the positioning projection portion 614 provided posteriorly to the lower portion 613A is inserted into the hole portion 72 formed in the support portion 70. In this manner, because the fan guard 42 fits into the recessed portion 71, the front surface portion 420 of the fan guard 42 is arranged in such a manner as to be on the same plane as the front end portion 36A1 and the second front surface portion 38B. Furthermore, the lower screwing portion 612 provided anteriorly to the lower portion 613A extends along the front end portion 36A1 of the first front surface portion 36A, and is fixed to the front end portion 36A1 by a bolt (screw) 100. With this configuration, the fan guard 42 is positioned by the positioning projection portion 614 and the lower screwing portion 612 with respect to the front panel 36 in the front-back direction and the left-right direction. In the present embodiment, the fan guard 42 is fixed on the same plane as the front end portion 36A1 of the first front surface portion 36A, or with being located at a position slightly protruding within an allowable design range.
  • As illustrated in FIG. 6, the front panel 36 includes a protruding portion 74 extending in the up-down direction, on the second front surface portion 38B side of the right panel 38 in the first front surface portion 36A. The protruding portion 74 is provided adjacently to the recessed portion 71, and protrudes forward from the recessed portion 71, but formed with being recessed backward from the second front surface portion 38B of the right panel 38. On the front side of the protruding portion 74, a right hole portion (second traverse acceptance portion) 75 into which the right projection portion 604 is inserted is formed at a position in the fan guard 42 that corresponds to the right projection portion 604. As illustrated in FIG. 8, the right hole portion 75 is formed as an elongated hole having a length dimension in the up-down direction that is longer than a length dimension in the up-down direction of the right projection portion 604 bent downward. In a state in which the right projection portion 604 is inserted into the right hole portion 75, if the above-described positioning projection portion 614 is inserted into each hole portion 72, the fan guard 42 lowers with respect to the first front surface portion 36A until the lower portion 613A of the lower bending portion 613 and the support portion 70 come into contact with each other, and supported by the support portion 70. Thus, by a lower end 75A of the right hole portion 75 and a lower end 604A of the right projection portion 604 overlapping by a predetermined dimension in the height direction, the fan guard 42 is prevented from inclining forward (i.e., operator side). With this configuration, because the fan guard 42 can be temporarily fixed to the front panel 36, an operator can fix the fan guard 42 without actively holding the fan guard 42 with his/her hand.
  • Further, as illustrated in FIGS. 6 and 9, the front panel 36 includes a left side recessed portion 80 provided in the first left side surface portion 36B. The left side recessed portion 80 is recessed toward the right side surface side of the casing from a left side end portion 36B1 of the first left side surface portion 36B, and extends in the up-down direction. Further, the front panel 36 includes a wall portion 81 that extends in the up-down direction on the second left side surface portion 39A side of the left panel 39 in the first left side surface portion 36B, and connects the left side end portion 36B1 and the left side recessed portion 80. In the wall portion 81, a left hole portion (first traverse acceptance portion) 82 into which the left projection portion 603 is to be inserted is formed at a position in the above-described fan guard 42 that corresponds to the left projection portion 603.
  • In a case where the fan guard 42 is attached to the front panel 36, as illustrated in FIG. 9, by moving the fan guard 42 in an arrow y direction with respect to the front panel 36, the left projection portion 603 of the fan guard 42 is inserted into the left hole portion 82 formed in the above-described wall portion 81. By accepting the left projection portion 603 protruding backward, the movement in the left-right direction of the fan guard 42 is regulated, and the left hole portion 82 can position the fan guard 42 in the left-right direction. Thus, an external opening (movement in the left-right direction) of the fan guard 42 can be regulated, and deviation in the left-right direction between the upper screwing portion 611 and the lower screwing portion 612 formed in the fan guard 42, and screw holes formed in the casing 30 can be prevented, and an operator can execute screwing in a state in which the upper screwing portion 611 and the lower screwing portion 612, and the screw holes are fitted with each other. Furthermore, as illustrated in FIGS. 7 and 8, by moving the fan guard 42 in an arrow α direction (β direction) with respect to the front panel 36, the right projection portion 604 of the fan guard 42 is inserted into the right hole portion 75 of the above-described protruding portion 74, and the positioning projection portion 614 of the fan guard 42 is inserted into the hole portion 72 formed in the above-described support portion 70. Thus, in a state in which the right projection portion 604 is inserted into the right hole portion 75, if the positioning projection portion 614 is inserted into each hole portion 72, the fan guard 42 lowers with respect to the first front surface portion 36A until the lower portion 613A of the lower bending portion 613 and the support portion 70 come into contact with each other, and supported by the support portion 70. With this configuration, downward depression of the fan guard 42 can be regulated, a deviation in the up-down direction between the upper screwing portion 611 and the lower screwing portion 612, and screw holes formed in the casing 30 is prevented, and an operator can execute screwing in a state in which the upper screwing portion 611 and the lower screwing portion 612, and the screw holes are fitted with each other, which improves work efficiency. Furthermore, by a lower end 75A of the right hole portion 75 and a lower end 604A of the right projection portion 604 overlapping by a predetermined dimension in the height direction, the fan guard 42 is prevented from inclining forward (i.e., operator side). Thus, an operator never performs a work of executing screwing while actively holding the fan guard 42 with one hand. With such a configuration, when the large fan guard 42 as in the present embodiment is attached to the front panel 36, the fan guard 42 can be positioned and temporarily fixed to the front panel 36. Thus, a screwing work of the fan guard 42 becomes easier.
  • Heretofore, the outdoor device 2 of the heat pump cycle device 1 according to the present embodiment includes the outdoor heat exchanger 13, and the casing 30 storing the outdoor fan 17 that blows air to the outdoor heat exchanger 13, and the casing 30 includes the front panel 36 provided with the air outlet 41 for blowing air having been subjected to heat exchange with a refrigerant in the outdoor heat exchanger 13 by the rotation of the outdoor fan 17, out to the outside of the casing 30, and the fan guard 42 attached to the front panel 36 to cover the air outlet 41, and in a lower portion of the front panel 36, the support portion 70 on which the fan guard 42 is supported is provided. With this configuration, for example, because an attachment work of the fan guard 42 can be performed in a state in which the upsized fan guard 42 is supported by the support portion 70 provided in the lower portion of the front panel 36, the workability of this attachment work can be improved.
  • Further, in the outdoor device 2 of the heat pump cycle device 1 according to the present embodiment, because the lower portion 613A of the lower bending portion 613 to be placed on the support portion 70, and the positioning projection portion 614 protruding downward, and the lower screwing portion 612 are provided at the lower end of the fan guard 42, in a state in which the lower portion 613A of the lower bending portion 613 is placed on the support portion 70, positioning and attachment of the fan guard 42 can be easily performed.
  • Further, in the outdoor device 2 of the heat pump cycle device 1 according to the present embodiment, because the fan guard 42 includes the positioning projection portion 614 arranged posteriorly to the lower portion 613A of the lower bending portion 613, and the lower screwing portion 612 arranged anteriorly to the lower portion 613A, by the positioning projection portion 614 and the lower screwing portion 612, positioning in the front-back direction and the left-right direction of the fan guard 42 with respect to the front panel 36 can be performed. Thus, it is possible to easily perform the attachment of the fan guard 42.
  • Further, in the outdoor device 2 of the heat pump cycle device 1 according to the present embodiment, because the support portion 70 includes the hole portions 72 into which the positioning projection portions 614 are to be inserted, by inserting the positioning projection portions 614 into these hole portions 72, it is possible to easily perform positioning of the fan guard 42 with respect to the front panel 36 in the front-back direction and the left-right direction.
  • Further, in the outdoor device 2 of the heat pump cycle device 1 according to the present embodiment, the fan guard 42 is formed by combining like a net a plurality of longitudinal line materials 61 extending in the longitudinal direction, and a plurality of transverse line materials 60 extending in the traverse direction, and the positioning projection portion 614 and the lower screwing portion 612 are formed by protruding lower ends of at least partial longitudinal line materials 61A and 61B. Thus, positioning and attachment of the fan guard 42 can be realized by a simple configuration.
  • Further, in the outdoor device 2 of the heat pump cycle device 1 according to the present embodiment, the fan guard 42 is integrally formed to include the front surface portion 420 covering the air outlet 41 of the front panel 36 of the casing 30, and the left side surface portion 421 covering a part of the left side surface side of the casing 30, and the positioning projection portion 614 is formed at the lower end of the front surface portion 420. Thus, it is possible to easily perform the positioning of the front surface portion 420 with respect to the air outlet 41, and easily attach the fan guard 42 to the front panel 36.
  • Further, in the outdoor device 2 of the heat pump cycle device 1 according to the present embodiment, the left projection portion 603 and the right projection portion 604 are formed at both ends of a part of the transverse line materials 60A, and the front panel 36 includes the left hole portion 82 into which the left projection portion 603 is to be inserted, and the right hole portion 75 into which the right projection portion 604 is to be inserted, at positions corresponding to the left projection portion 603 and the right projection portion 604. Thus, when the fan guard 42 is attached to the front panel 36, the fan guard 42 can be positioned and temporarily fixed to the front panel 36. Thus, a screwing work of the fan guard 42 becomes easier, and the fan guard 42 can be easily attached to the front panel 36.
  • Further, in the outdoor device 2 of the heat pump cycle device 1 according to the present embodiment, because the front panel 36 includes the recessed portion 71 in which a part of the front panel 36 is recessed toward the back side of the casing 30, and the support portion 70 is formed in the recessed portion 71, by recessing a part of the front panel 36 toward the back side, the support portion 70 can be easily formed.
  • Further, in the outdoor device 2 of the heat pump cycle device 1 according to the present embodiment, because the fan guard 42 is integrally formed to includes the front surface portion 420 covering the air outlet 41 of the front panel 36 of the casing 30, and the left side surface portion 421 covering a part of the left side surface side of the casing 30, and a depth dimension of the recessed portion 71 is a dimension that can fit the front surface portion 420 into the recessed portion 71, it is possible to fix the fan guard 42 in a state of being positioned on almost the same plane as the front end portion 36A1 of the first front surface portion 36A in the front panel 36. Accordingly, by the fan guard 42 and the front panel 36 becoming almost the same surface, it is possible to enhance the overall sense of unity and improve the design of the outdoor device 2. In addition, in a case where importance is not placed on the design of the outdoor device 2, the fan guard 42 may be arranged with protruding from the front panel 36.
  • The above-described components includes those easily conceivable by those skilled in the art, and those substantially the same. Furthermore, the above-described configurations can be appropriately combined. Further, various omissions, replacements, and modifications of configurations can be made without departing from the gist of the present invention. For example, in the present embodiment, the front panel 36 to which the fan guard 42 is attached has been described to have a configuration of integrally including the first front surface portion 36A forming a part of the front surface of the casing 30, and the first left side surface portion 36B forming a part of the left side surface of the casing 30, but the front panel needs not include a side surface portion as long as at least a front surface portion is included. Further, in the present embodiment, the fan guard 42 has been described to have a configuration including the positioning projection portion 614 (first lower projection portion) and the lower screwing portion 612 (second lower projection portion) that function as a lower projection portion, but the lower screwing portion 612 needs not be included as long as at least the positioning projection portion 614 is included.
  • In addition, the present disclosure encompasses the following invention.
    1. (1) An outdoor device of a heat pump cycle device, the outdoor device comprising: a heat exchanger; and a casing storing a fan that blows air to the heat exchanger, wherein the casing includes a front panel provided with an air outlet for blowing air having been subjected to heat exchange with a refrigerant in the heat exchanger by rotation of the fan, out to an outside of the casing, and a fan guard attached to the front panel to cover the air outlet, and wherein, in a lower portion of the front panel, a support portion on which the fan guard is supported is provided.
    2. (2) The outdoor device of the heat pump cycle device according to (1), wherein, at a lower end of the fan guard, a placed portion to be placed in the support portion, and a lower projection portion protruding downward are provided.
    3. (3) The outdoor device of the heat pump cycle device according to (2), wherein the lower projection portion includes a first lower projection portion arranged on a back side, and a second lower projection portion arranged on a front side.
    4. (4) The outdoor device of the heat pump cycle device according to (3), wherein the support portion includes a lower acceptance portion into which the first lower projection portion is to be inserted.
    5. (5) The outdoor device of the heat pump cycle device according to any one of (2) to (4), wherein the fan guard is formed by combining like a net a plurality of longitudinal line materials extending in a longitudinal direction, and a plurality of transverse line materials extending in a traverse direction, and wherein the lower projection portion is formed by protruding a lower end of at least a part of the longitudinal line materials downward.
    6. (6) The outdoor device of the heat pump cycle device according to any one of (2) to (4), wherein the fan guard is integrally formed to include a front surface portion covering the air outlet of the front panel of the casing, and a side surface portion covering a part of a side surface side of the casing, and wherein the lower projection portion is formed at a lower end of the front surface portion.
    7. (7) The outdoor device of the heat pump cycle device according to (5), wherein, at both ends of a part of the transverse line materials, a first traverse projection portion and a second traverse projection portion are formed, and wherein the front panel includes a first traverse reception portion into which the first traverse projection portion is to be inserted, and a second traverse reception portion into which the second traverse projection portion is to be inserted, at positions corresponding to the first traverse projection portion and the second traverse projection portion.
    8. (8) The outdoor device of the heat pump cycle device according to any one of (1) to (4), wherein the front panel includes a recessed portion in which a part of the front panel is recessed toward a back side of the casing, and wherein the support portion is formed in the recessed portion.
    9. (9) The outdoor device of the heat pump cycle device according to (8), wherein the fan guard is integrally formed to include a front surface portion covering the air outlet of the front panel of the casing, and a side surface portion covering a part of a side surface side of the casing, and wherein the recessed portion can fit the fan guard into the recessed portion.
    10. (10) A heat pump cycle device comprising: an outdoor device arranged outdoor; and an indoor device arranged indoor, wherein the outdoor device includes a heat exchanger; and a casing storing a fan that blows air to the heat exchanger, wherein the casing includes a front panel provided with an air outlet for blowing air having been subjected to heat exchange with a refrigerant in the heat exchanger by rotation of the fan, out to an outside of the casing, and a fan guard attached to the front panel to cover the air outlet, and wherein, in a lower portion of the front panel, a support portion on which the fan guard is supported is provided.
    Reference Signs List
    • 1 HEAT PUMP CYCLE DEVICE
    • 2 OUTDOOR DEVICE
    • 3 INDOOR DEVICE
    • 13 OUTDOOR HEAT EXCHANGER (HEAT EXCHANGER)
    • 17 OUTDOOR FAN (FAN)
    • 30 CASING
    • 36 FRONT PANEL
    • 36A FIRST FRONT SURFACE PORTION
    • 36A1 FRONT END PORTION
    • 36B FIRST LEFT SIDE SURFACE PORTION
    • 36B1 LEFT SIDE END PORTION
    • 41 AIR OUTLET
    • 42 FAN GUARD
    • 42A UPPER END PORTION
    • 60, 60A TRANSVERSE LINE MATERIAL
    • 61, 61A, 61B LONGITUDINAL LINE MATERIAL
    • 70 SUPPORT PORTION
    • 71 RECESSED PORTION
    • 72 HOLE PORTION (LOWER ACCEPTANCE PORTION)
    • 74 PROTRUDING PORTION
    • 75 RIGHT HOLE PORTION (SECOND TRAVERSE ACCEPTANCE PORTION)
    • 80 LEFT SIDE RECESSED PORTION
    • 81 WALL PORTION
    • 82 LEFT HOLE PORTION (FIRST TRAVERSE ACCEPTANCE PORTION)
    • 420 FRONT SURFACE PORTION
    • 421 LEFT SIDE SURFACE PORTION
    • 603 LEFT PROJECTION PORTION (FIRST TRAVERSE PROJECTION PORTION)
    • 604 RIGHT PROJECTION PORTION (SECOND TRAVERSE PROJECTION PORTION)
    • 611 UPPER SCREWING PORTION
    • 612 LOWER SCREWING PORTION (LOWER PROJECTION PORTION, SECOND LOWER PROJECTION PORTION)
    • 613 LOWER BENDING PORTION
    • 613A LOWER PORTION (PLACED PORTION)
    • 614 POSITIONING PROJECTION PORTION (LOWER PROJECTION PORTION, FIRST LOWER PROJECTION PORTION)

Claims (10)

  1. An outdoor device of a heat pump cycle device, the outdoor device comprising:
    a heat exchanger; and
    a casing storing a fan that blows air to the heat exchanger,
    wherein the casing includes a front panel provided with an air outlet for blowing air having been subjected to heat exchange with a refrigerant in the heat exchanger by rotation of the fan, out to an outside of the casing, and a fan guard attached to the front panel to cover the air outlet, and
    wherein, in a lower portion of the front panel, a support portion on which the fan guard is supported is provided.
  2. The outdoor device of the heat pump cycle device according to claim 1, wherein, at a lower end of the fan guard, a placed portion to be placed in the support portion, and a lower projection portion protruding downward are provided.
  3. The outdoor device of the heat pump cycle device according to claim 2, wherein the lower projection portion includes a first lower projection portion arranged on a back side, and a second lower projection portion arranged on a front side.
  4. The outdoor device of the heat pump cycle device according to claim 3, wherein the support portion includes a lower acceptance portion into which the first lower projection portion is to be inserted.
  5. The outdoor device of the heat pump cycle device according to any one of claims 2 to 4,
    wherein the fan guard is formed by combining like a net a plurality of longitudinal line materials extending in a longitudinal direction, and a plurality of transverse line materials extending in a traverse direction, and
    wherein the lower projection portion is formed by protruding a lower end of at least a part of the longitudinal line materials downward.
  6. The outdoor device of the heat pump cycle device according to any one of claims 2 to 4,
    wherein the fan guard is integrally formed to include a front surface portion covering the air outlet of the front panel of the casing, and a side surface portion covering a part of a side surface side of the casing, and
    wherein the lower projection portion is formed at a lower end of the front surface portion.
  7. The outdoor device of the heat pump cycle device according to claim 5,
    wherein, at both ends of a part of the transverse line materials, a first traverse projection portion and a second traverse projection portion are formed, and
    wherein the front panel includes a first traverse reception portion into which the first traverse projection portion is to be inserted, and a second traverse reception portion into which the second traverse projection portion is to be inserted, at positions corresponding to the first traverse projection portion and the second traverse projection portion.
  8. The outdoor device of the heat pump cycle device according to any one of claims 1 to 4,
    wherein the front panel includes a recessed portion in which a part of the front panel is recessed toward a back side of the casing, and
    wherein the support portion is formed in the recessed portion.
  9. The outdoor device of the heat pump cycle device according to claim 8,
    wherein the fan guard is integrally formed to include a front surface portion covering the air outlet of the front panel of the casing, and a side surface portion covering a part of a side surface side of the casing, and
    wherein the recessed portion can fit the fan guard into the recessed portion.
  10. A heat pump cycle device comprising:
    an outdoor device arranged outdoor; and
    an indoor device arranged indoor,
    wherein the outdoor device includes
    a heat exchanger; and
    a casing storing a fan that blows air to the heat exchanger,
    wherein the casing includes a front panel provided with an air outlet for blowing air having been subjected to heat exchange with a refrigerant in the heat exchanger by rotation of the fan, out to an outside of the casing, and a fan guard attached to the front panel to cover the air outlet, and
    wherein, in a lower portion of the front panel, a support portion on which the fan guard is supported is provided.
EP23872602.0A 2022-09-29 2023-09-29 Outdoor unit of heat pump cycle device, and heat pump cycle device Pending EP4596982A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022156293A JP7544108B2 (en) 2022-09-29 2022-09-29 Outdoor unit of heat pump cycle device, and heat pump cycle device
PCT/JP2023/035642 WO2024071383A1 (en) 2022-09-29 2023-09-29 Outdoor unit of heat pump cycle device, and heat pump cycle device

Publications (1)

Publication Number Publication Date
EP4596982A1 true EP4596982A1 (en) 2025-08-06

Family

ID=90478135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23872602.0A Pending EP4596982A1 (en) 2022-09-29 2023-09-29 Outdoor unit of heat pump cycle device, and heat pump cycle device

Country Status (3)

Country Link
EP (1) EP4596982A1 (en)
JP (1) JP7544108B2 (en)
WO (1) WO2024071383A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5990771B2 (en) * 2012-07-10 2016-09-14 パナソニックＩｐマネジメント株式会社 Heat pump water heater
WO2018066127A1 (en) * 2016-10-07 2018-04-12 三菱電機株式会社 Outdoor unit for air conditioning device
JP2018151136A (en) 2017-03-14 2018-09-27 株式会社富士通ゼネラル Outdoor unit for air conditioner
JP1632777S (en) * 2018-10-12 2019-06-03
EP3800404B1 (en) * 2019-10-02 2022-08-10 Daikin Industries, Ltd. Outdoor unit for a heat pump
US20220333795A1 (en) * 2019-12-06 2022-10-20 Mitsubishi Electric Corporation Outdoor unit for air-conditioning apparatus

Also Published As

Publication number Publication date
JP7544108B2 (en) 2024-09-03
WO2024071383A1 (en) 2024-04-04
JP2024049824A (en) 2024-04-10

Similar Documents

Publication Publication Date Title
EP2905549B1 (en) Outdoor unit control for air conditioner
JP5310887B2 (en) Outdoor unit and refrigeration equipment
JP6227166B2 (en) Outdoor unit
JP2007147247A (en) Shut-off valve mounting structure, and outdoor unit of air conditioner including the same
WO2018061548A1 (en) Refrigeration device
CN202792283U (en) Outdoor unit of refrigeration device
JP2013113558A (en) Outdoor unit of air conditioner and support member for shut-off valve used therefor
JP6732110B2 (en) Outdoor unit, air conditioner, and method of manufacturing outdoor unit
WO2023176438A1 (en) Outdoor unit of heat pump cycle device and heat pump cycle device
EP4596982A1 (en) Outdoor unit of heat pump cycle device, and heat pump cycle device
JP5516387B2 (en) Refrigeration unit outdoor unit
EP4488592A1 (en) Heat pump cycle device
EP4495493A1 (en) Outdoor unit of heat pump cycle device, and heat pump cycle device
US20250362061A1 (en) Cascade refrigeration cycle apparatus
EP4600571A1 (en) Outdoor unit for air conditioner
JP7552632B2 (en) Heat pump cycle equipment
JP7843926B2 (en) air conditioner
JP5609624B2 (en) Refrigeration unit outdoor unit
JP2021081080A (en) Refrigerant flow diverter and air conditioner
JP2024049731A (en) Air conditioner outdoor unit
WO2020183607A1 (en) Indoor unit
JP6628931B2 (en) Air conditioner outdoor unit
JP2024048129A (en) Air conditioner outdoor unit
JP2024049918A (en) Air conditioner outdoor unit
JP2023173582A (en) Air conditioning indoor unit, and air conditioning device

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20250311

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)