WO2019123596A1 - 冷凍サイクル装置の室外機 - Google Patents

冷凍サイクル装置の室外機 Download PDF

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Publication number
WO2019123596A1
WO2019123596A1 PCT/JP2017/045883 JP2017045883W WO2019123596A1 WO 2019123596 A1 WO2019123596 A1 WO 2019123596A1 JP 2017045883 W JP2017045883 W JP 2017045883W WO 2019123596 A1 WO2019123596 A1 WO 2019123596A1
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WO
WIPO (PCT)
Prior art keywords
heater
outdoor unit
bottom plate
refrigeration cycle
bracket
Prior art date
Application number
PCT/JP2017/045883
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
登 吉永
Original Assignee
東芝キヤリア株式会社
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 東芝キヤリア株式会社 filed Critical 東芝キヤリア株式会社
Priority to CN201780097747.5A priority Critical patent/CN111480036A/zh
Priority to PL434389A priority patent/PL240268B1/pl
Priority to PCT/JP2017/045883 priority patent/WO2019123596A1/ja
Priority to JP2019559953A priority patent/JP6916905B2/ja
Publication of WO2019123596A1 publication Critical patent/WO2019123596A1/ja
Priority to JP2021117593A priority patent/JP7096413B2/ja

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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
    • F24F1/36—Drip trays for outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles

Definitions

  • An embodiment according to the present invention relates to an outdoor unit of a refrigeration cycle apparatus.
  • the outdoor unit of such a refrigeration cycle apparatus includes a housing having a bottom plate, a compressor provided inside the housing, a heat exchanger, and a blower for ventilating the heat exchanger.
  • the refrigeration cycle apparatus may form frost on the heat exchanger of the outdoor unit by continuing the heating (heating) operation in an environment where the outside air temperature is low, such as a cold region or a snowfall region.
  • the heat exchanger of the outdoor unit is frosted, the heat exchange performance of the refrigeration cycle apparatus is significantly reduced.
  • the refrigeration cycle apparatus periodically performs a defrosting operation (so-called defrosting operation) that melts the frost adhering to the heat exchanger of the outdoor unit.
  • defrosting operation a high temperature refrigerant is caused to flow through the heat exchanger of the outdoor unit to melt the adhered frost and drop it on the bottom plate.
  • the drain water (drainage, melted frost) generated by the defrosting operation is drained to the outside through the drainage port provided on the bottom plate of the outdoor unit.
  • drain water generated by the defrosting operation may freeze on the bottom plate before being drained to the outside of the outdoor unit. That is, the drain water freezes before reaching the drainage port and can not be drained normally.
  • the outdoor unit of the conventional refrigerating cycle apparatus is provided with the electric heating apparatus provided in the upper surface of the bottom plate.
  • the heating device of the conventional outdoor unit is equipped with a sheathed heater which can be bent somewhat but is difficult to lay along a free path as a heating device. That is, the heating device of the conventional outdoor unit needs to be manufactured in a shape adapted to the laying path in advance.
  • a flexible and freely bendable heater capable of flexibly setting the laying path may be applied to the electric heating device of the outdoor unit.
  • the heating capacity per unit area of the flexible heater is inferior to the heating capacity per unit area of the conventional sheathed heater. That is, there is a trade-off relationship between the degree of freedom of the heater installation path and the heat generation capacity per unit area of the heater.
  • the present invention proposes an outdoor unit of a refrigeration cycle apparatus capable of reliably draining drain water generated by a defrosting operation using a flexible heater having a lower heating capacity per unit area than conventional sheathed heaters. Do.
  • an outdoor unit of a refrigeration cycle apparatus is provided with a bottom plate having a drainage port, and flexibility, and doubles in all or part of the periphery of the drainage port. And a linear heater having a double laying section to be laid.
  • the outdoor unit of the refrigerating-cycle apparatus based on embodiment of this invention is provided with the partition plate integrally molded to a fixing tool, and being pinched
  • the outdoor unit of the refrigeration cycle apparatus includes a heater holding piece that is integrally molded with the fixture and causes the fixture to be held by plastic deformation. .
  • the fixture of the outdoor unit of the refrigeration cycle apparatus is made of a sheet metal, and the heater holding piece is positioned between the fixture and the bottom plate, so that the space between the heater and the bottom plate Preferably, a clearance of
  • An outdoor unit of a refrigeration cycle apparatus includes a heat exchanger disposed above the bottom plate, there are a plurality of the drainage ports, and all or part of the respective drainage ports are the above It is preferable to arrange
  • the fixture of the outdoor unit of the refrigeration cycle apparatus according to the embodiment of the present invention is integrally molded in the projection area.
  • the heater of the outdoor unit of the refrigeration cycle apparatus has a linear shape in which a heating wire and an electric wire parallel to the heating wire are integrated, and the heating wire is closer to the bottom plate than the electric wire. It is preferable that it is arrange
  • the outdoor unit of the refrigeration cycle apparatus includes a fan disposed on the bottom plate to be opposed to the heat exchanger.
  • the heater was laid on the bottom plate of the lower part of the blower.
  • FIG. 1 It is a disassembled perspective view of an example of the outdoor unit of the refrigerating cycle device concerning the embodiment of the present invention.
  • the top view of the baseplate of the outdoor unit which concerns on embodiment of this invention, and an electric heating apparatus.
  • the top view of the baseplate of the outdoor unit which concerns on embodiment of this invention, and an electric heating apparatus.
  • the top view of the baseplate of the outdoor unit which concerns on embodiment of this invention, and an electric heating apparatus.
  • BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the baseplate of the outdoor unit and electric heating apparatus which concern on embodiment of this invention.
  • BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the baseplate of the outdoor unit and electric heating apparatus which concern on embodiment of this invention.
  • FIGS. 1 to 10 Embodiments of an outdoor unit of a refrigeration cycle apparatus according to the present invention will be described with reference to FIGS. 1 to 10.
  • the same or corresponding components are denoted by the same reference numerals.
  • FIG. 1 is an exploded perspective view of an example of an outdoor unit of a refrigeration cycle apparatus according to an embodiment of the present invention.
  • the outdoor unit 1 of the refrigeration cycle apparatus includes a housing 13 having an air inlet 11 and an air outlet 12, and a compressor 15 disposed in the housing 13.
  • the air blower 16 disposed in the housing 13, the heat exchanger 17 disposed in the housing 13, and the electric component box 18 disposed in the housing 13.
  • the housing 13 has a rectangular parallelepiped shape.
  • the width dimension (the dimension in the left-right direction) of the housing 13 is larger than the depth dimension (the dimension in the front-rear direction) of the housing 13.
  • the housing 13 includes a bottom plate 21, a left side plate 22a covering the left side, a right side plate 22b covering the right side, a front plate 25 covering the front, fingers 26 covering the back, and a top plate 27 covering the top surface.
  • a partition plate 28 provided upright on the bottom plate 21 and partitioning the inside of the housing 13 into right and left.
  • the bottom plate 21 has a rectangular shape in plan view.
  • the width dimension of the bottom plate 21 is larger than the depth dimension of the bottom plate 21.
  • the bottom plate 21 is substantially parallel to the ground contact surface of the outdoor unit 1.
  • the bottom plate 21 is a thick sheet metal work to support each of the incorporated parts.
  • the compressor 15, the blower 16 and the heat exchanger 17 are supported and fixed to the bottom plate 21.
  • the front plate 25 that is the front of the housing 13 is made of a thin sheet metal.
  • the front plate 25 has a circular air outlet 12 at the center.
  • the air outlet 12 is provided with a fan guard 29 having a fine square opening.
  • the fingered 26 covers and hides the heat exchanger 17.
  • the partition plate 28 is a plate-like member extending in the vertical direction and made of sheet metal.
  • the partition plate 28 is fixed to the bottom plate 21 by screwing or the like.
  • the partition plate 28 divides the inside of the housing 13 in the width direction (left and right direction) of the housing 13.
  • a space on the right side in the housing 13 partitioned by the partition plate 28 is a machine room 31.
  • a space on the left side in the housing 13 partitioned by the partition plate 28 is a fan chamber 32.
  • the compressor 15 is disposed in the machine room 31. Inside the compressor 15, a compression mechanism (not shown) that compresses and delivers the refrigerant circulating in the refrigeration cycle, and a motor (not shown) that drives the compression mechanism are provided.
  • the blower 16 and the heat exchanger 17 are disposed in the blower chamber 32.
  • the heat exchanger 17 is a find tube type.
  • the heat exchanger 17 extends along the back surface and the left side surface of the housing 13 and has an L shape in plan view.
  • the blower 16 has a propeller fan.
  • the blower 16 is disposed between the front plate 25 of the housing 13 and the heat exchanger 17 with the rotation center line directed in the front-rear direction of the housing 13.
  • the blower 16 is disposed on the bottom plate 21 so as to face the heat exchanger 17.
  • the refrigeration cycle apparatus executes a defrosting operation for melting the frost adhering to the heat exchanger 17 periodically or when frost formation is detected.
  • the defrosting operation is performed in a cooling (cooling) operation state by driving a four-way valve (not shown) for switching the flow of refrigerant in the refrigeration cycle.
  • the heat exchanger 17 which has functioned as an evaporator during heating (warming) operation functions as a condenser.
  • the high temperature refrigerant flows in the heat exchanger 17.
  • the temperature of the heat exchanger 17 rises, the frost adhering to the fins and pipes constituting the heat exchanger 17 melts, and the melted water flows down onto the bottom plate 21.
  • the bottom plate 21 is a substantially flat plate, and in order to drain drain water to the outside of the outdoor unit 1, it mainly has an appropriate drainage port (hole) in the lower part of the heat exchanger.
  • the outdoor unit 1 which concerns on this embodiment is provided with the electric heating apparatus which prevents freezing of drain water.
  • An electric heating device of the outdoor unit 1 according to the present embodiment will be described.
  • FIG 2 to 4 are plan views of the bottom plate 21 and the electric heating device 46 of the outdoor unit according to the embodiment of the present invention.
  • FIG 5 and 6 are perspective views of the bottom plate 21 and the electric heating device 46 of the outdoor unit according to the embodiment of the present invention.
  • FIG. 2 is a figure for demonstrating arrangement
  • the electric heating device 46 is illustrated including a bracket 47 that attaches to the bottom plate 21.
  • the heat exchanger 17 installed on the bracket 47 is shown with the dashed-two dotted line. 5 corresponds to the perspective view of FIG. 3, and FIG. 6 corresponds to the perspective view of FIG.
  • the outdoor unit 1 of the refrigeration cycle apparatus includes an electric heating device 41 for preventing freezing of drain water dropped from the heat exchanger 17 during the defrosting operation.
  • the heating device 41 is provided on the bottom plate 21.
  • the heat exchanger 17 of the outdoor unit 1 is bent in an L-shape along the inner surface of the rear surface and the inner surface of the left surface of the outdoor unit 1.
  • a portion along the back surface of the outdoor unit 1 is referred to as a back surface portion 17a
  • a portion along the left side surface of the outdoor unit 1 is referred to as a side surface portion 17b.
  • the bottom plate 21 of the housing 13 has a drain port 43 for draining drain water dropped from the heat exchanger 17 to the outside (outside) of the outdoor unit 1.
  • a plurality of drainage ports 43 are provided. Most of the drainage ports 43 are disposed in a projection area PA (a heat exchanger 17 shown by a two-dot chain line in FIG. 3) on the bottom plate 21 of the heat exchanger 17 where the drain water drips most .
  • PA a heat exchanger 17 shown by a two-dot chain line in FIG. 3
  • the first drain port 43 a is disposed along the back surface of the outdoor unit 1 and is a long hole elongated in the width direction of the outdoor unit 1. As shown in FIG. 3, the first drain port 43 a entirely fits in the projection area PA on the bottom plate 21 of the back surface portion 17 a of the heat exchanger 17.
  • the second drainage port 43b is the largest drainage port of the opening area.
  • the second drain port 43 b is disposed along the back surface of the outdoor unit 1 and is circular.
  • the second drain port 43 b is disposed directly behind the blower 16 in a plan view.
  • the second drain port 43 b partially protrudes from the projection area PA of the heat exchanger 17 onto the bottom plate 21 toward the blower 16.
  • the second drain port 43 b is provided substantially at the center of the back surface 17 a of the heat exchanger 17. For this reason, the second drain port 43b is a drain port from which the largest amount of drain water flows.
  • the third drain port 43 c is disposed along the left side surface of the outdoor unit 1 and is a long hole elongated in the front-rear direction of the outdoor unit 1.
  • the third drain port 43 c is accommodated in the projection area PA on the bottom plate 21 of the side portion 17 b of the heat exchanger 17.
  • the third drain port 43c mainly drains drain water dropped from the side surface portion 17b of the heat exchanger 17 to the outside (lower portion).
  • the fourth drain port 43 d is disposed along the back surface of the outdoor unit 1 and is a long hole substantially elongated in the width direction of the outdoor unit 1.
  • the fourth drain port 43d is closer to a corner (corner) on the rear left side of the outdoor unit 1 than the second drain port 43b.
  • the fourth drain port 43 d is disposed near the corner on the far left side of the outdoor unit 1.
  • the fourth outlet 43 d fits in a projection area PA of the heat exchanger 17 onto the bottom plate 21.
  • the fifth drain port 43 e is disposed at a corner on the rear left side of the outdoor unit 1.
  • the fifth drain port 43 e is located directly below the bending portion of the L-shaped heat exchanger 17 and fits in the projection area PA of the heat exchanger 17 onto the bottom plate 21.
  • the fourth drainage port 43d and the fifth drainage port 43e are auxiliary drainage ports.
  • the fourth drain port 43d and the fifth drain port 43e are provided in consideration of the possibility that the drain water can not be drained by the main second drain port 43b and third drain port 43c.
  • the electric heating device 41 is flexible and has at least one linear heater 46 having a double laying portion 45 which is double laid around all or part of the periphery of the drainage port 43; A bracket 47 as a fixing tool for collectively fixing the double laying portion 45 of the heater 46 to the bottom plate 21 and a screw 48 as a fixing member for fixing the bracket 47 to the bottom plate 21 are provided.
  • the flexible heater 46 a so-called cord heater, is cheaper than the sheathed heater but has a smaller calorific value.
  • the heater 46 has two wires running in parallel and a coating made of silicon rubber or the like covering the periphery of the two wires.
  • One end 46a (starting end) of the heater 46 is an electrical input end for power supply connection.
  • the two internal wires are electrically connected by crimping or the like.
  • One of the two wires is a hot wire, and the other is a wire for supplying electricity to the hot wire.
  • the heater 46 is laid on the upper surface of the bottom plate 21 of the housing 13 while being held by the bracket 47. That is, after the heater 46 is laid on the bracket 47, the heater 46 is laid on the bottom plate 21 of the housing 13 integrally with the bracket 47 while maintaining the laying path.
  • the heater 46 starts from the starting end (one end 46 a) connected to the AC power supply in the electric component box 18 (FIG. 1) provided in the machine room 31 of the outdoor unit 1.
  • the heater 46 extends from one end 46a and enters the fan chamber 32, and once crosses the front of the first outlet 43a from right to left (portion 46c in FIG. 2). Subsequently, the heater 46 is folded back before reaching the second outlet 43b (portion 46d in FIG. 2).
  • the heater 46 follows the opening shape of the first drain port 43a, and extends to the second drain port 43b through the front side, the right side, and the back side of the first drain port 43a.
  • the heater 46 conforms to the opening shape of the second drainage port 43b, and passes through the back side of the second drainage port 43b.
  • the heater 46 follows the shape of the edge of the bottom plate 21 of the housing 13 and passes through the corner at the rear left of the bottom plate 21 and extends toward the third drainage port 43c. Subsequently, the heater 46 passes near the edge of the bottom plate 21 of the housing 13 more than the fourth drain port 43 d and the fifth drain port 43 e on the way from the second drain port 43 b to the third drain port 43 c.
  • the heater 46 reaches the third outlet 43c, it passes through the left side, the front side, and the right side of the third outlet 43c.
  • the heater 46 is folded back before reaching the fourth outlet 43d and the fifth outlet 43e and extends again toward the third outlet 43c.
  • the installation route of the heater 46 so far includes a portion corresponding to the outer route of the double installation part 45.
  • the heater 46 when the heater 46 reaches the third outlet 43c, it passes inside the outer path (a part near the third outlet 43c) and passes through the right side, the front side, and the left side of the third outlet 43c. It extends toward the outlet 43d. Before reaching the fourth outlet 43d, the heater 46 changes the stretching direction to the right to cross the front of the fourth outlet 43d and the fifth outlet 43e. The heater 46 extends toward the second outlet 43b when crossing the front of the fourth outlet 43d and the fifth outlet 43e. When the heater 46 reaches the second drainage port 43b, it passes inside the outer path (a part near the second drainage port 43b) and conforms to the shape of the second drainage port 43b and the back side of the second drainage port 43b It crosses and extends toward the first drain port 43a.
  • the heater 46 when the heater 46 reaches the first drainage port 43a, it passes through the inner side (a part near the first drainage port 43a) than the outer path, and passes through the back side, the left side, and the front side of the first drainage port 43a It extends toward the mouth 43b. Subsequently, when the heater 46 reaches the second drainage port 43b, it crosses the front side of the second drainage port 43b from the right side to the left side according to the shape of the second drainage port 43b.
  • the installation path of the heater 46 so far includes a portion corresponding to the inner path of the double installation portion 45. Then, among the laying paths of the heater 46, the front side, the right side, and the back side of the first drainage port 43a, the back side of the second drainage port 43b, the left side, the front side, and the right side of the third drainage port 43c And a portion extending from the first outlet 43a to the second outlet 43b, a portion extending from the second outlet 43b to the fourth outlet 43d, and a portion crossing the front side of the fifth outlet 43e, It is a double laying portion 45 of the heater 46.
  • the double laying portion 45 is appropriately set according to the inflow path of the drain water flowing into the drainage port and the inflow amount from the viewpoint of preventing freezing of the drain water around the drainage port 43. That is, even if the double laying portion 45 of the heater 46 and the single laying portion are mixed around the drainage port 43, the entire circumference of the drainage port 43 is surrounded by the double laying portion 45. Also good. For example, of the inner path of the heater 46, a portion extending toward the fourth outlet 43d via the left side of the third outlet 43c is diverted to the back side of the third outlet 43c to cover the entire periphery of the third outlet 43c. It is also possible to surround in the double laying part 45.
  • the heater 46 crosses the front side of the fourth drain port 43d, passes through the right side of the third drain port 43c, and enters the lower region (the region 16 indicated by a broken line in the figure) of the blower 16.
  • the heater 46 extends meanderingly from the right side to the left side of the lower region of the blower 16 to reach the end (the other end 46 b). That is, the heater 46 is also laid on the bottom plate of the lower part of the blower 16 in addition to the lower part of the heat exchanger 17.
  • the heater 46 surrounds the drain port 43, it is preferable that the heater 46 is not completely in close contact with the bottom plate 21 so that drain water in the defrosting operation reliably reaches the drain port 43.
  • the heater 46 is preferably separated from the bottom plate 21 in a range that does not substantially affect the heating of the bottom plate 21, for example, 0.5 mm or less. By this size setting, drain water can flow under the heater 46, and drain water dropped to the outside of the heater 46 can also flow under the heater 46 and flow into the drainage port 43.
  • the portion of the heater 46 installed in the lower area of the blower 16 melts the snow that has entered the outdoor unit 1 in order to prevent the snow that has entered the outdoor unit 1 from accumulating until it inhibits the rotation of the blower 16. It has become. In addition, if it installs in the cold district where there is not much snow, the heater 46 of this part is unnecessary.
  • the bracket 47 includes a double laying portion 45 of the heater 46, and a first bracket 51 hanging on a projection area PA of the heat exchanger 17 onto the bottom plate 21; and a second bracket 52 disposed in a lower area of the blower 16; Contains.
  • the first bracket 51 is integrally formed in the projection area PA.
  • the first bracket 51 is, for example, a sheet metal machined product obtained by processing a sheet metal.
  • the first bracket 51 follows the laying path of the heater 46 laid in the projection area PA, in other words, the laying path of the heater 46 including the double laying portion 45.
  • the first bracket 51 also has a bridge portion 53 for reinforcement.
  • the bridge portion 53 does not cover the heater 46.
  • the bridge portion 53 improves the overall strength of the first bracket 51 and improves the handling of the integrated first bracket 51 by laying the heater 46.
  • the bridging portion 53 is the right side of the first drain 43a (first bridge 53a), both left and right sides of the second drain 43b (second bridge 53b), and the first drain 43a and the second drain.
  • the first bracket 51 may be divided into a plurality of parts.
  • the first bracket 51 is an integral part including the double laying portion 45 around the first drain port 43a, an integral part including the double laying portion 45 around the second drain port 43b, and the third drainage port It may be divided into an integral part including a double laying portion 45 around 43c.
  • the second bracket 52 linearly extends the lower region of the blower 16 in the left-right direction (the width direction of the outdoor unit 1).
  • a part of the heater 46 protrudes from the second bracket 52 so as to cross in the extending direction of the second bracket 52 and meanders.
  • the meandering portion is used for adjustment of individual differences (variations among products) of the length of the heater 46.
  • the heater 46 is laid on the first bracket 51 and the second bracket 52, if there is an extra length at the end of the heater 46, more length is allocated to the meander portion to adjust the extra length.
  • the screw 48 is, for example, the back side of the first bridge 53a and the second outlet 43b, the left side of the fourth outlet 43d, the right side of the fourth bridge 53d and the third outlet 43c, and the right side of the second outlet 43b.
  • the first bracket 51 is fixed to the bottom plate 21 at an intermediate portion of the laying path from the lower portion toward the lower region of the blower 16 and at the end portion thereof.
  • a fixing flange 58 having a screw hole 57 described later is provided integrally with the first bracket 51.
  • the screw 48 fixes, for example, an appropriate portion of the second bracket 52 to the bottom plate 21.
  • FIG. 7 is a perspective view of a state in which the heater of the outdoor unit according to the embodiment of the present invention is installed on a bracket.
  • FIG 8 and 9 are perspective views of the bracket of the outdoor unit according to the embodiment of the present invention.
  • FIG. 8 is a perspective view of the bracket 47 as viewed from the upper side
  • FIG. 9 is a perspective view of the bracket 47 as viewed from the lower side.
  • the heater 46 of the outdoor unit 1 of the refrigeration cycle apparatus is laid and integrated on the bracket 47 before laying on the bottom plate 21 of the outdoor unit 1.
  • the bracket 47 of the outdoor unit 1 of the refrigeration cycle apparatus is integrally molded with the bracket 47 and holds the heater 46 by plastic deformation.
  • a heater holding piece 55 is provided.
  • the bracket 47 has a U-shaped open cross section for holding the heater 46.
  • the bracket 47 has the U-shaped open portion directed to the bottom plate 21.
  • Most of the side walls of the bracket 47 (the wall standing against the bottom plate 21 of the housing 13) are such that the heat of the heater 46 warms the bottom plate 21 as much as possible and releases heat from the bracket 47 side. It is separated from the bottom plate 21 of the housing 13 without reaching the bottom plate 21 of the housing 13.
  • the heater holding piece 55 is formed of a sheet metal integral with the bracket 47.
  • the heater holding piece 55 protrudes from the side wall of the bracket 47.
  • the heater holding piece 55 projects from the heater 46 laid on the bracket 47 while extending straight from the side wall of the bracket 47.
  • a bowl-shaped notch is provided at the root of this projecting portion.
  • the heater holding piece 55 can be easily bent at this narrowed notch.
  • the heater 46 is fixed to the bracket 47 by bending the heater holding piece 55 at the notch portion. When the bracket 47 is screwed to the bottom plate 21, the heater holding piece 55 is in close contact with the bottom plate 21.
  • the gap H between the bottom plate 21 and the heater 46 by the thickness of the heater holding piece 55 that is, the thickness of the sheet metal forming the bracket 47. Is formed. That is, by appropriately selecting the thickness of the metal plate of the bracket 47, the gap between the bottom plate 21 and the heater 46 can be appropriately secured.
  • the heater holding piece 55 is provided at an appropriate position of the bracket 47.
  • the heater holding piece 55 is provided around the portion where the flexible heater 46 is bent and laid, or the length of the non-fixed linear portion of the heater 46 does not exceed 50 mm. Or may be provided in the double laying portion 45 of the heater 46.
  • the heater holding piece 55 is not only bent to directly hold the heater 46, but may be inserted into a slit (not shown) of the bottom plate 21 and bent on the back (bottom) side of the bottom plate 21, for example.
  • the heater holding piece 55 not only holds the heater 46 on the bracket 47 but also serves as a fixing member for fixing the bracket 47 to the bottom plate 21. For example, it is particularly effective where there is no room for arranging the screw 48.
  • the bracket 47 is provided with a fixing flange 58 having a screw hole 57 through which the screw 48 is inserted.
  • the fixing flange 58 corresponds to the arrangement of the screws 48.
  • the fixing flange 58 is also integrally molded with a sheet metal bracket 47.
  • the fixing flange 58 is formed by bending a sheet metal including the bracket 47.
  • FIG. 10 is sectional drawing in the double installation part of the heater of the outdoor unit which concerns on embodiment of this invention.
  • the heater 46 of the outdoor unit 1 of the refrigeration cycle apparatus includes the heating wire 61, the electric wire 62 parallel to the heating wire 61, the heating wire 61 and the electric wire And 62 an outer cover 63 for bundling.
  • the jacket 63 is a flexible coating such as silicone rubber.
  • the bracket 47 holds the heater 46 such that the high heat side of the heater 46 is located closer to the bottom plate 21 than the low temperature side of the heater 46.
  • the heat wire 61 is disposed on the lower side of the wire 62 and on the near side of the bottom plate 21.
  • the bottom plate 21 side can be efficiently heated.
  • the first bracket 51 is provided with a partition plate 65 sandwiched between the heaters 46 of the double laying portion 45.
  • the partition plate 65 is integrally formed with the first bracket 51.
  • the partition plate 65 is formed integrally with the first bracket 51 by a so-called cutting and bending process in which a cut is formed in a part of the first bracket 51 and the cut is bent toward the back side of the top plate. Therefore, the first bracket 51 has an opening 66 at a position where the partition plate 65 is provided.
  • the partition plate 65 is disposed substantially at the center in the width direction of the first bracket 51 (the direction intersecting the extending direction). In other words, the partition plate 65 bisects the inside of the bracket 47 in the width direction.
  • the heat wire 61 is disposed on the opening side
  • the electric wire 62 is disposed on the back side
  • the heater 46 is accommodated for each of the divided recesses (inside of the bracket 47).
  • the double laying portion 45 of the heater 46 is sandwiched and held between the side wall of the first bracket 51 and the partition plate 65. Further, the heater 46 of the portion other than the double laying portion 45 of the heater 46, that is, the portion which is simply a single layer, arranges the heat wire 61 on the opening side and arranges the electric wire 62 on the back side. It is pinched and held.
  • the outdoor unit 1 of the refrigeration cycle apparatus is a linear heater that has flexibility and has a double laying portion 45 that is double laid around all or part of the outlet 43. It has 46. Therefore, the outdoor unit 1 is provided with a flexible heater 46 which is inferior in heat generation capacity per unit area to the conventional sheathed heater, but it is easy to increase the degree of freedom of the laying path of the heater 46. That is, the outdoor unit 1 doubles the heater 46 on all or part of the periphery of the drainage port 43 where drainage water is easily collected and drainage water is collected, thereby increasing the calorific value of the drainage port 43 Intensively warm and allow smooth drainage. In addition, the outdoor unit 1 suppresses the consumption of excess power without laying the heater 46 double even at a portion that does not affect the flow of drain water, even at a low temperature compared to the periphery of the drainage port 43. .
  • the outdoor unit 1 of the refrigeration cycle apparatus includes a bracket 47 for collectively fixing at least the double laying portion 45 of the heater 46 to the bottom plate 21. Therefore, the outdoor unit 1 can reliably hold the double laying portion 45 of the heater 46 by the bracket 47, and can ensure the heating capacity of the relevant portion with certainty.
  • the outdoor unit 1 of the refrigeration cycle apparatus is provided with the partition plate 65 which is integrally formed with the bracket 47 and is sandwiched between the heaters 46 of the double laying portion 45. Therefore, the outdoor unit 1 can reliably hold the double laying portion 45 of the flexible heater 46 even by vibration caused by the operation of the compressor 15 or the blower 16 or vibration during transportation.
  • the outdoor unit 1 of the refrigeration cycle apparatus includes the heater holding piece 55 that holds the heater 46 on the bracket 47 by plastic deformation. Therefore, when laying the heater 46, the outdoor unit 1 can reliably hold the double laying portion 45 with the bracket 47, and can reduce the effort required to lay the place.
  • the heater holding piece 55 is positioned between the bracket 47 and the bottom plate 21 so that a gap between the heater 46 and the bottom plate 21 is secured. Therefore, the outdoor unit 1 can appropriately secure a gap between the bottom plate 21 and the heater 46 to be, for example, 0.5 mm or less by appropriately selecting the thickness of the metal plate of the bracket 47. .
  • the outdoor unit 1 of the refrigeration cycle apparatus is provided with a plurality of drainage ports 43, all or part of which are disposed in the projection area PA on the bottom plate 21 of the heat exchanger 17.
  • the outdoor unit 1 can easily route (lay) the flexible heater 46 around the plurality of drainage ports 43.
  • the outdoor unit 1 of the refrigeration cycle apparatus includes the bracket 47 that is integrally molded in the projection area PA on the bottom plate 21 of the heat exchanger 17. Therefore, the outdoor unit 1 reliably holds the double laying portion 45 by the bracket 47 and can easily lay the flexible heater 46 collectively in the projection area PA.
  • the outdoor unit 1 of the refrigeration cycle apparatus includes the heater 46 having the heat wire 61 disposed closer to the bottom plate 21 than the electric wire 62. That is, the outdoor unit 1 can reliably arrange the heating wire 61 closer to the bottom plate 21 than the electric wire 62 by holding the flexible heater 46 securely by the bracket 47.
  • the drain water generated by the defrosting operation can be assured even when using the flexible heater 46 whose heat generation capacity per unit area is inferior to the sheathed heater. Can be drained.
  • first bracket 52 second bracket 53: bridge portion 53a first bridge portion 53b second bridge portion 53c third bridge portion 53d fourth bridge portion 53e ... fifth bridge portion, 55 ... heater holding piece, 57 ... screw hole, 58 ... fixed flange, 61 ... heat wire, 62 ... electric wire, 63 ... jacket, 65 ... partition plate, 66 ... opening.
PCT/JP2017/045883 2017-12-21 2017-12-21 冷凍サイクル装置の室外機 WO2019123596A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201780097747.5A CN111480036A (zh) 2017-12-21 2017-12-21 冷冻循环装置的室外机
PL434389A PL240268B1 (pl) 2017-12-21 2017-12-21 Jednostka zewnętrzna dla urządzenia cyklu chłodniczego
PCT/JP2017/045883 WO2019123596A1 (ja) 2017-12-21 2017-12-21 冷凍サイクル装置の室外機
JP2019559953A JP6916905B2 (ja) 2017-12-21 2017-12-21 冷凍サイクル装置の室外機
JP2021117593A JP7096413B2 (ja) 2017-12-21 2021-07-16 冷凍サイクル装置の室外機

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PCT/JP2017/045883 WO2019123596A1 (ja) 2017-12-21 2017-12-21 冷凍サイクル装置の室外機

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JP2021139574A (ja) * 2020-03-06 2021-09-16 ダイキン工業株式会社 輸送用冷凍装置、及び輸送用コンテナ

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JP2010071514A (ja) * 2008-09-17 2010-04-02 Mitsubishi Electric Corp 空気調和機の室外機および空気調和機、並びにその室外機の凍結防止装置
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JP7001940B2 (ja) 2020-03-06 2022-01-20 ダイキン工業株式会社 輸送用冷凍装置、及び輸送用コンテナ

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PL240268B1 (pl) 2022-03-07
JPWO2019123596A1 (ja) 2020-11-19
CN111480036A (zh) 2020-07-31
PL434389A1 (pl) 2021-01-11
JP7096413B2 (ja) 2022-07-05
JP6916905B2 (ja) 2021-08-11

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