JP2013088007A - Air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate device design for coping with dew condensation water by reasonably reconstructing a heat absorbing element and a support frame for supporting a lower end thereof and to facilitate device design for sufficiently ensuring support strength as well.SOLUTION: The air-conditioning system is equipped with a heat absorbing element 3 of a vertical attitude with a heat exchanger tube penetrated through an apparatus body, a support frame 17 for supporting a lower end of the heat absorbing element 3, and a drain pan 18 for receiving dew condensation water flowing down from the heat absorbing element 3 at a position lower than the support frame 17. In addition, the air-conditioning system includes a drain receiver 22 residing between a lower end of the heat absorbing element 3 and the support frame 17 and having a heat transfer property lower than that of the support frame 17 which receives dew condensation water flowed down from the heat absorbing element 3 and guides the received dew condensation water downward to the drain pan 18 side without bringing it into contact with the support frame 17.

Description

  The present invention relates to a natural convection type air conditioner.

  In a conventional air conditioner, an upper conduit and a lower conduit are installed in parallel in a horizontal posture on both upper and lower sides of a pair of left and right support plates fixed to a floor surface and a ceiling surface. A plurality of flat hollow vertical heat exchange panels constituting the heat absorbing element are fixed in a communicating state across the left and right portions of the lower conduit corresponding to the above.

  The upper conduit and the lower conduit are configured to be used as a support frame that supports the upper and lower ends of the plurality of heat exchange panels, and the dew condensation water that flows down from the surfaces of the upper conduit, the plurality of heat exchange panels, and the lower conduit. The drain pan that receives the stub is fixed to the lower end portions of the pair of left and right support plates (see, for example, Patent Documents 1 and 2).

Japanese Utility Model Publication No. 3-97115 JP 2006-207857 A

  In a conventional air conditioner, an upper conduit that supports not only the surfaces of a plurality of heat exchange panels but also the upper and lower ends thereof during cooling operation in which a cooling medium such as cold water or evaporative refrigerant passes through both the conduits and the heat exchange panel. A large amount of condensed water is also generated on each surface of the lower and lower conduits. For this reason, in order to prevent leakage problems caused by the generated condensed water, not only the response to the generated condensed water in the heat exchange panel, but also the upper and lower conduits There is also a problem that it is difficult to design the apparatus accordingly.

  In addition, copper pipes and aluminum pipes with high thermal conductivity are generally used for the upper and lower pipes. However, since these copper pipes and aluminum pipes are soft and have low strength, heat exchange is performed with respect to the upper and lower pipes. In the above conventional support structure in which the upper and lower ends of the panel are directly fixed, the support strength for the integrated body of both the conduits and the heat exchange panel is governed and restricted by the strength of both conduits. There was also a problem that it was difficult to design the apparatus in terms of ensuring sufficient support strength for the integrated object with the replacement panel.

  The present invention has been made in view of the above-mentioned actual situation, and the main problem is that it is possible to prevent generated dew condensation water by rational modification between the heat absorbing element and the support frame supporting the lower end portion thereof. In addition to facilitating device design in terms of compatibility, it also facilitates device design in terms of ensuring sufficient support strength. As a result, production and cost, as well as safety and durability It is in the point of providing an even better air conditioner.

According to a first characteristic configuration of the present invention, a vertical endothermic element in which a heat transfer tube is penetrated in a container, a support frame that supports a lower end portion of the endothermic element, and dew condensation water flowing down from the endothermic element are provided. Equipped with a drain pan that is received at a position below the support frame, an air conditioner that cools the heat-absorbing element by passing a cooling medium through the heat transfer tube to cool the air around the heat-absorbing element,
The dew condensation water flowing down from the heat absorption element is received between the lower end portion of the heat absorption element and the support frame, and lower than the support frame that guides the dew condensation water received to the drain pan without touching the support frame. A heat-conducting drain receptacle is provided.

  According to the above configuration, the drain receiver provided between the lower end portion of the heat absorbing element and the support frame receives the condensed water flowing down from the surface of the heat absorbing element and guides it to the drain pan without touching the support frame. Therefore, it is possible to avoid cooling of the support frame due to the condensed water on the endothermic element falling, and the drain receiver itself is lower in heat transfer than the support frame, so it is supported from the endothermic element. Propagation of cold heat to the frame can be suppressed.

  Therefore, even if there is inherent generation of condensed water in the heat-absorbing element, it effectively suppresses the generation of condensation on the support frame by the flow guide action and heat insulating action of the condensed water in the drain receiver as described above. be able to.

  Moreover, even if a soft, low-strength tube such as a copper tube or an aluminum tube is used as the heat transfer tube, the load of the heat absorption element can be supported by the support frame via the drain receiver, so the support load is absorbed by the heat absorption tube. It is possible to avoid hanging on the heat transfer tube protruding from the lower end of the element.

  Therefore, compared with the conventional air conditioner, it is possible to facilitate the design of the device in terms of the response to the generated dew condensation water, and also facilitate the design of the device in terms of sufficiently securing the support strength for the heat transfer tubes and the heat absorbing elements. As a result, the air conditioner can be further improved in terms of production, cost, safety, and durability.

  According to a second characteristic configuration of the present invention, there is a drainage cylinder portion on the lower surface of the bottom portion of the drain receiver for guiding the condensed water discharged from the drainage port portion of the bottom portion to a lower position where it does not touch the support frame. It is in the point provided.

  According to the above configuration, when the condensed water flowing down from the heat absorbing element is received by the drain receiver and guided to the drain pan without touching the support frame, the drain receiver is provided on the lower surface of the bottom of the drain receiver. Since it is only necessary to provide a drainage cylinder that extends to a lower position where the condensed water discharged does not touch the support frame, for example, the condensed water discharged from the drain outlet touches the support frame at the entire bottom of the drain receptacle. The generation of condensed water can be suppressed while simplifying the structure as compared with the case of inclining to a lower position.

  A third characteristic configuration according to the present invention is that a lower surface of the bottom portion of the drain receiver is provided with a leg portion that abuts a part of the upper surface of the support frame.

  According to the above configuration, in a state where the legs of the drain receiver are in contact with a part of the upper surface of the support frame, there is a space between the lower surface of the bottom of the drain receiver and the upper surface of the support frame other than the contact portion. Therefore, the propagation of cold heat from the heat absorbing element to the support frame can be further effectively suppressed.

  According to a fourth characteristic configuration of the present invention, the support frame is provided in a pair of front and rear with a gap through which a heat transfer tube protruding from the lower end of the heat absorbing element is inserted in a non-contact state, and the drain receiver However, it is in the point which is mounted in the non-contact state with the heat exchanger tube which protrudes from the lower end of the said heat absorption element over the upper surface of a pair of front and back support frames.

  According to the above configuration, since the heat transfer tube projecting from the lower end of the heat absorption element is in non-contact with the pair of support frames, the heat absorption element is supported by the pair of support frames at the lower end portion thereof. The heat transfer tube and the heat absorption element can be supported with a support function for the lower end portion of the heat absorption element by the frame.

  In addition, since the drain receiver placed over the upper surfaces of the pair of front and rear support frames is configured in a non-contact state with the heat transfer tube protruding from the lower end of the heat absorption element, the heat transfer from the heat transfer tube to the support frame is prevented. It can be effectively suppressed.

  According to a fifth characteristic configuration of the present invention, the drain receiver is configured to have a length corresponding to a parallel arrangement region of the heat absorbing elements, and a bottom portion of the drain receiver is provided with each of the heat absorbing elements. A common drain outlet is formed to guide the condensed water flowing down to the drain pan side.

  According to the above configuration, the number of parts and assembly man-hours can be reduced as compared to the case where individual drain receptacles are provided for the lower end portions of the respective endothermic elements arranged in parallel. Thus, the air conditioner can be further improved in terms of cost.

  A sixth characteristic configuration according to the present invention is that the front-rear width of the drain receiver is configured to be larger than the front-rear width of the lower end of the heat absorbing element and the front-rear width of the support frame.

  According to the above configuration, the dew condensation water flowing down from the endothermic element side can be reliably received, and the dew condensation water can be prevented from falling on the support frame through the outside of the drain receiver. It is possible to effectively suppress the occurrence of condensation.

  A seventh characteristic configuration according to the present invention is that the drain tube portion of the drain receiver is fitted and held on the support frame from above.

  According to the above configuration, it is possible to simplify the positioning structure of the drain receiver that is placed and supported on the upper surface of the support frame by using the fitting structure between the drain tube portion of the drain receiver and the support frame. .

  An eighth characteristic configuration according to the present invention is that a fixing screw inserted through the leg portion of the drain receiving tool from the support frame is screwed and fixed to a lower end portion of the heat absorbing element.

  According to the above configuration, when the lower end of the heat absorbing element is screwed and fixed to the support frame via the drain receiver, the intermediate portion of the fixing screw that is screwed and fixed to the lower end of the heat absorbing element is the leg of the drain receiver. Since it is enclosed in the through hole of the part, it is possible to suppress the occurrence of condensation on the fixing screw.

  According to a ninth feature of the present invention, the support frame is made of metal, and the drain receiver is made of resin.

In the structure where the lower end of the endothermic element is directly supported by the support frame, if the endothermic element and the support frame are made of different metals such as aluminum and iron, electrolytic corrosion will occur if there is moisture (condensation water) at the contact point. Will occur.
However, in the present invention, the drainage receiving device interposed between the lower end portion of the heat absorbing element and the support frame is manufactured from a resin, so that even when the heat absorbing element and the support frame are manufactured from different metals, electrolytic corrosion. Can be avoided.

Perspective view of indoor unit in air conditioner Exploded perspective view of indoor unit Side view of indoor unit Side view sectional view of the lower case Side view sectional view of the upper case Plan view sectional view of indoor unit Upper case front panel and perspective view showing its mounting state Lower case front panel and perspective view showing its mounting state Exploded perspective view around the juxtaposed group of heat absorbing / dissipating elements Exploded sectional view of the lower support structure for the heat absorbing / dissipating element Top side perspective view of drain receiver Bottom perspective view of drain receiver

  FIG. 1 shows an indoor unit 1 in a natural convection type air conditioner, and the body of the indoor unit 1 includes an element housing part 2 opened toward the front of the body, and the element housing part 2 is composed of an upper case part 1A. And a lower case portion 1B, and a rectangular space region surrounded by a pair of left and right side column case portions 1C extending over the upper and lower case portions 1A and 1B.

  As shown in FIGS. 1 and 2, the element housing portion 2 includes a plurality of vertical (seven in this example) heat-absorbing / dissipating elements 3 extending in a parallel posture between the upper case portion 1A and the lower case portion 1B. As shown in FIGS. 6 and 9, the heat transfer tubes 4 are arranged at equal intervals in the left-right width direction of the indoor unit 1. The straight pipe portion 4 a is penetrated through the entire length of the heat absorbing / dissipating element 3.

  The heat absorbing / dissipating element 3 and the heat transfer tube 4 are both made of a heat conducting material. In this example, the heat absorbing / dissipating element 3 is made of aluminum, and the heat transfer tube 4 is a copper tube.

  As shown in FIG. 7 and FIG. 9, the heat transfer tube 4 is connected to the adjacent pair of the upper protruding portions in the straight tube portion 4a penetrated through each of the heat absorbing / dissipating elements 3 by a pair of upper bend tubes 4b. By connecting adjacent pairs of side protruding portions alternately with the upper side by lower bend pipes 4c, the straight pipe parts 4a are connected in series by upper and lower bend pipes 4b and 4c to form a meandering pipe. It is.

  One end of the meandering heat transfer tube 4 is connected to an outdoor unit (not shown) installed outside through a liquid side refrigerant tube 5a covered with a heat insulating material, and the other end of the meandering heat transfer tube 4 is also a gas covered with a heat insulating material. It connects to the outdoor unit through the side crossing refrigerant pipe 5b.

  The outdoor unit installed outdoors includes a compressor, an outdoor heat exchanger, an expansion valve, and a four-way valve. In the cooling operation, the outdoor heat exchanger functions as a condenser and the meandering heat transfer tube 4 of the indoor unit 1 is provided. The refrigerant R is circulated between the outdoor unit and the indoor unit 1 through the two transition refrigerant pipes 5a and 5b so as to function as an evaporator.

  In the heating operation, the refrigerant path is switched by a four-way valve, so that the outdoor heat exchanger functions as an evaporator, and the meandering heat transfer tube 4 of the indoor unit 1 functions as a condenser. The refrigerant R is circulated between the outdoor unit and the indoor unit 1 through the transition refrigerant pipes 5a and 5b.

  In other words, in the cooling operation, the heat transfer tube 4 and the heat absorbing / dissipating element 3 attached thereto are cooled by taking the heat of vaporization accompanying the evaporation of the refrigerant R inside the meandering heat transfer tube 4 functioning as an evaporator, thereby The indoor air around 3 is cooled, and the cooling air is naturally lowered due to the difference in specific gravity due to the temperature difference. As a result, the cool air is allowed to flow obliquely downward from the lower part of the element housing portion 2 to the indoor unit installation room. The room is cooled in such a form that a large convection of room air is generated in the indoor unit installation room as the cold air flows out.

  Further, in the heating operation, the heat absorbing / radiating element is heated by heating the heat transfer tube 4 and the heat absorbing / dissipating element 3 attached thereto by releasing the condensation heat accompanying the condensation of the refrigerant R inside the meandering heat transfer tube 4 functioning as a condenser. 3 radiates heat from the surface of 3 and heats indoor air around the heat absorbing / dissipating element 3 and naturally raises the heated air due to a difference in specific gravity due to temperature difference. In cooperation with the above heat radiation, the air flows into the installation room diagonally upward and causes a large convection of the room air (convection in the opposite direction to that during cooling operation) to occur in the indoor unit installation room. To heat the room.

  In this example, as shown in FIG. 9, a liquid-side transition refrigerant tube 5 a is connected to one end of a meandering heat transfer tube 4 located at the lower part of the left and right sides of the element housing portion 2, A transition refrigerant pipe 5b on the gas side is connected to the other end of the meandering heat transfer pipe 4 located in the upper part on the other side.

  As shown in FIG. 6, a plurality of fin portions 3 a, 3 b (in the longitudinal direction of the heat absorbing / dissipating element 3 (that is, the longitudinal direction of the heat absorbing / dissipating element 3)) are provided on the front surface side and the rear surface side of the heat absorbing / dissipating element 3. In other words, a pleated portion is integrally formed. Specifically, as shown in the enlarged view of FIG. 6, the heat absorbing / dissipating element 3 has a columnar core portion 3c and its core in a cross-sectional view. Board portion 3d extending from the portion 3c toward the left and right outwards, and a plurality of front side fin portions 3a extending forward from the core portion 3c and the board portion 3d in a parallel posture and arranged at equal intervals on the left and right. It is out.

  Similarly, the same number of rear fin portions 3b as the front fin portions 3a are arranged at equal intervals on the left and right sides in a parallel posture so as to correspond to the front fin portions 3a from the core portion 3c and the substrate portion 3d. It extends backward.

  The core portion 3c is formed with a tube insertion hole 3e through which the heat transfer tube 4 passes, and the front side central fin portion 3a 'extending from the core portion 3c of the front side fin portion 3a, and the rear side fin A central fin portion 3b 'on the rear surface side that extends from the core portion 3c of the portion 3b is formed with a stopper insertion hole 3f for fixing the element disposed in the middle of the front and rear thereof.

  That is, by providing the fin portion 3a, 3b in the vertical posture in the heat absorbing / dissipating element 3, it is not limited to ensuring a large heat transfer area and heat radiation area for the ambient air of the heat absorbing / dissipating element 3, and cooling operation Then, the cooling air around the heat absorbing / dissipating element 3 is naturally lowered smoothly through the vertical groove portion between the fin portions 3a, 3b, and accordingly, uncooled room air is smoothly attracted around the heat absorbing / dissipating element 3. In addition, the condensed water generated on the surface of the heat absorbing / dissipating element 3 is transmitted to the surface of the heat absorbing / dissipating element 3 and smoothly flows down naturally. The heat exchange (in other words, heat transfer) is kept in an efficient state, the cold air flows out from the lower part of the element housing portion 2 into the room, and the accompanying air convection in the room Effective and causes stably occur.

  Similarly, in the heating operation, the heated air around the heat absorbing / dissipating element 3 is smoothly and naturally raised with a so-called chimney effect through the longitudinal groove between the fins 3a, 3b, and accordingly, the air absorbing / dissipating element 3 The unheated room air is smoothly attracted to the surroundings, thereby maintaining the heat exchange (heat transfer) between the surface of the heat absorbing / dissipating element 3 and the surrounding room air in an efficient state. Warm air outflow from the upper part of the housing part 2 into the room and accompanying air convection in the room are effectively and stably generated.

  As shown in FIGS. 2 and 6, the rear surface portion and the left and right side surface portions of the element accommodating portion 2 are closed by a closing plate 6 having a flat “U” -shaped cross section in plan view. 6 has a two-layer structure in which the inner surface side is formed of a thermally conductive plate material 6a (in this example, an aluminum plate) having a glossy front surface, and the outer surface side is formed of a heat insulating material 6b (in this example, foamed polystyrene). is there.

  That is, with the cooling of the heat absorbing / dissipating element 3 during the cooling operation, the room wall W on the back side of the indoor unit is cooled, and condensation occurs on the surface of the back side wall wall W. It is reliably prevented by diffusive cold heat conduction in the plate surface direction due to the thermal conductivity of the inner surface side plate material 6a and by cold heat insulation by the outer surface side heat insulating material 6b.

  Further, in the cooling operation, the inner surface side plate material 6a is uniformly cooled in the direction of the plate surface by diffusive cooling heat conduction in the plate surface direction due to the thermal conductivity of the inner surface side plate material 6a as described above, thereby absorbing and releasing heat. Accompanying the air cooling around the element 3, incidental air cooling is generated in a uniform state in the surface direction on the front surface side of the inner surface side plate material 6 a in the closing plate 6, thereby Air cooling is made more uniform and more efficient in the left-right width direction of the element housing portion 2 with respect to the parallel arrangement of the heat absorbing / dissipating elements 3 at a predetermined interval, thereby further promoting the outflow of cold air from the lower portion of the element housing portion 2. In addition, the uniformity of the cold air outflow in the left-right width direction of the element accommodating portion is also improved.

  Similarly, in the heating operation, the inner surface side plate member 6a is uniformly heated in the direction of the plate surface by diffusive heat conduction in the plate surface direction due to the thermal conductivity of the inner surface side plate member 6a. Along with the air heating around, the accompanying air heating is caused to occur in a uniform state in the surface direction on the front surface side of the inner surface side plate member 6a in the closing plate 6, whereby the air heating in the element accommodating portion 2 is performed. Is further made more uniform in the left-right width direction of the element housing portion 2 with respect to the parallel arrangement of the heat absorbing / dissipating elements 3 at a predetermined interval, and more efficient, further promoting the warm air outflow from the upper portion of the element housing portion 2, The uniformity of the warm air outflow in the left-right width direction of the element accommodating portion is also improved.

  Further, in the heating operation, the heat radiation from the surface of the heat absorbing / dissipating element 3 that is directed rearward and laterally is reflected by the glossy front surface of the inner surface side plate member 6a, whereby the heat from the element housing portion 2 into the room is reflected. The radiation is further promoted and the uniformity of the heat radiation is enhanced.

  As shown in FIG. 6, the front-side fin portion 3a of the heat-absorbing / dissipating element 3 has a length extending forward as it is located on the left and right center side, and connects the tips of the front-side fin portions 3a. The virtual envelope in plan view is a curve on a pointed or semicircular arc that protrudes forward, so that the outflow cold air during cooling operation, as well as the outflow warm air and heat radiation during heating operation Is given to the indoor unit in the width direction.

  In contrast, the rear fin portions 3b of the heat-absorbing / dissipating element 3 have the same rearward extension dimension so that the virtual envelope in plan view connecting the tips of the rear fin portions 3b is a straight line. Accordingly, in combination with the thermal conductivity of the inner surface side plate material 6a in the closing plate 6, the cooling or heating of the inner surface side plate material 6a accompanying the cooling or heating of the heat absorbing / dissipating element 3 is made more uniform in the surface direction. Make things.

  The heat absorbing / dissipating element 3 is manufactured by extrusion molding. In this extrusion molding, the fin absorbing parts 3a, 3b, the core part 3c, the substrate part 3d, the tube insertion hole 3e, and the stopper insertion hole 3f are respectively provided on the heat absorbing / dissipating element 3. At the same time, integrally formed.

  In this extrusion molding, the rear fin portions 3b having the same extension length are arranged in a downward extending posture, and the front end groups of the rear fin portions 3b are received and guided on the feeder. In this way, it is possible to proceed with extrusion molding while keeping the heat absorbing / dissipating element 3 in a stable posture regardless of the complicated cross-sectional shape of the heat absorbing / dissipating element 3. Avoid molding defects of the heat absorbing / dissipating element 3 due to lodging in the process.

  In molding the heat absorbing / dissipating element 3, the inner diameter of the tube insertion hole 3e is made slightly larger than the outer diameter of the heat transfer tube 4, and after molding, the straight tube portion 4a of the heat transfer tube 4 is forced through the tube insertion hole 3e. In this state, the diameter of the heat transfer tube straight pipe portion 4a is increased by applying a pressure such as hydraulic pressure in the pipe of the straight pipe portion 4a, thereby avoiding a gap remaining on the inner surface side of the pipe insertion hole 3e. In this state, the straight pipe portion 4a of the heat transfer tube 4 and the heat absorbing / dissipating element 3 are tightly integrated to ensure high thermal conductivity between the heat transfer tube 4 and the heat absorbing / dissipating element 3.

  The diameter expansion processing of the heat transfer tube straight pipe portion 4a is performed for each straight pipe portion 4a prior to connecting the straight pipe portions 4a by the bend pipes 4b and 4c, or the bend pipes 4b and 4c. After connecting the straight pipe portions 4a to form the meandering heat transfer tube 4, any of the methods for simultaneously performing the plurality of straight pipe portions 4a may be employed.

  Moreover, in the said diameter expansion process, the protrusion part from the edge part of the heat absorption / radiation element 3 among the heat exchanger tube straight pipe parts 4a, and the bend pipes 4b and 4c connected to these protrusion parts are clamped and hold | maintained with a tool. Thus, the diameter of the protruding portions and the connecting bend pipes 4b and 4c are prevented.

  As shown in FIGS. 2, 3, and 6, a back panel 7 having a vertically divided structure is provided on the back surface of the blocking plate 6 (that is, the back surface of the outer surface side heat insulating material 6 b) as an exterior material on the back side of the indoor unit. It is attached in a surface contact state, and the upper end portion and the lower end portion of the back panel 7 become rear panels of the upper case portion 1A and the lower case portion 1B, respectively.

  The outer sides of the left and right side column case parts 1C extend in the vertical direction, and the side column panel 8 whose upper and lower end parts are the side panels of the upper case part 1A and the lower case part 1B, respectively, and the inner side face of the element accommodating part 2 The side column frame 9 extending in the vertical direction is provided inside the side column case portion 1C, and the left and right side surfaces of the heat insulating material 6b of the closure plate 6 are formed in the side column case portion 1C. The parts are arranged in surface contact.

  As shown in FIGS. 1, 2, 5, and 7, the outer case 1 </ b> A has the front panel 10, the top panel 11, the top end of the back panel 7, and the top ends of the left and right side column panels 8. And a cap panel 8a that closes the upper end opening of the side column panel 8, and the rear extension 10a of the front panel 10 (that is, the portion that forms the ceiling surface of the element housing 2) A plurality of upper notches 10b that pass through the upper end portion of the heat absorbing / dissipating element 3 are arranged in the left and right directions to form a wave shape.

  Further, the lower portion 10c of the front panel 10 in the upper case portion 1A is in an inclined posture that retreats backward toward the lower side, and this inclined lower portion 10c and the rear extending portion 10a connected to the inclined lower portion 10c are used during heating operation. The warm air outflow from the upper part of the element accommodating part 2 is made smooth.

  Inside the upper case portion 1A, a pair of front and rear upper frames 12 and a pair of front and rear element upper support frames 13 are arranged below, and the upper panel 11 is attached to the front and rear upper frames 12 and attached. The front panel 10, the front and rear upper frames 12, and the front and rear element upper support frames 13 are respectively connected to the left and right side column frames 9 at both ends thereof.

  As shown in FIGS. 1, 2, 4, and 8, the outer case of the lower case portion 1 </ b> B includes a front panel 14, a rear upper panel 15 that receives the lower end of the closing plate 6, a lower end of the rear panel 7, A front panel of the upper case portion 1A is formed at the rear end portion 14a of the front panel 14 (that is, the portion forming the bottom surface of the element housing portion 2). 10, a plurality of lower notches 14 b that pass through the lower end of the heat absorbing / dissipating element 3 are formed side by side and formed into a wave shape. On the other hand, the rear upper panel 15 Engagement protrusions 15a are provided to engage and connect with the tops of the wavy portions of the protruding portion 14a.

  The upper portion 14c of the front panel 14 in the lower case portion 1B is in an inclined posture that retreats backward toward the upper side, and the front panel 10 of the upper case portion 1A is formed by the inclined upper portion 14c and the rearward extending portion 14a connected thereto. Similarly, the cooling air outflow from the lower part of the element accommodating portion 2 during the cooling operation is made smooth.

  Inside the lower case portion 1B, a pair of front and rear lower frames 16 and a pair of front and rear metal (aluminum in this example) element lower support frames 17 are arranged above the front panel 14 and the rear portion. The upper panel 15, the front and rear lower frames 16, and the front and rear element lower support frames 17 are respectively connected to the left and right side column frames 9 at both ends thereof.

  A drain pan 18 for receiving condensed water flowing down from the heat absorbing / dissipating element 3 during cooling operation is arranged between the front and rear lower frames 16 and the front and rear element lower support frames 17 located above the lower case portion 1B. Along with this, a drain pump 20 that discharges the condensed water received in the drain pan 18 to the outside through the drain pipe 19 is provided in the lower case portion 1B.

  Further, a base 21 is attached to the lower surface portion of the lower case portion 1B, and the indoor unit 1 is installed indoors through the base 21.

  As shown in FIGS. 3, 4, 9, and 10, for supporting the heat absorbing / dissipating element 3, the pair of front and rear element lower support frames 17 disposed in the lower case portion 1 </ b> B has a substantially L-shaped cross section. The front and rear element lower support frames 17 formed of a frame material are lines in which the inner portions in the L-shaped cross-sectional shape face each other in a side view and each side portion 17a is substantially horizontal. They are arranged in a symmetrical posture.

  In addition, the front and rear element lower support frames 17 are arranged in a parallel posture in which a gap S1 is formed between them in this line target posture, and are arranged on one side 17a of the horizontal posture of each element lower support frame 17. Is a state corresponding to the parallel arrangement region of the heat-absorbing / dissipating elements 3 in a state in which the shallow drainage receiving tool 22 extending in the left-right direction is straddled across the one-side portion 17a and the upper surface of the one-side portion 17a. Is placed in a hollow shape via a pair of leg portions 22C formed on the lower surface of the bottom portion 22A of the drain receiving tool 22 in a state of contacting a part of the drain receiving device 22.

  The drain receiver 22 is formed of a resin (ABS resin in this example) that is a material having lower heat conductivity than the metal material constituting the element lower support frame 17, and the front and rear central portions of the bottom 22 </ b> A of the drain receiver 22. In addition, a common slit-shaped drain port 22a that guides the condensed water flowing down from each of the heat-absorbing and heat-dissipating elements 3 to the drain pan 18 side is formed at a portion extending over the substantially entire length in the longitudinal direction (left-right direction). It is.

  A drain tube 22D having a rectangular tube shape communicating with the drain port 22a is formed on the lower surface of the bottom 22A of the drain receiver 22 so that the drain receiver 22 is connected to one side of the horizontal posture of the element lower support frame 17 at the front and rear. When placed on the portion 17a, the slit-shaped drain tube portion 22D of the drain receiving tool 22 is inserted from above into the gap S1 between the element lower support frames 17 in a fitted state from above, and the lower drain pan 18 is seen from directly above.

  The drain cylinder 22D of the drain receiver 22 protrudes to a lower position than the side edge portion 17e bent downward along the gap S1 side in one side portion 17a of the horizontal posture of the front and lower element lower support frames 17. Condensed water that is formed and flows down from the surface of the heat-absorbing and radiating element 3 is received by the drain receiver 22, and the received condensed water is flow-down guided to the drain pan 18 without touching the front and rear element lower support frames 17. It is configured.

  The lower end of the heat absorbing / dissipating element 3 is placed on the bottom of the resin drain receiver 22 to be received and supported by the front and rear element lower support frames 17 via the drain receiver 22. The lower bend pipe 4c, which is a heat transfer pipe protruding from the lower end of the element 3, is inserted into the slit-shaped drain tube portion 22D of the drain receiving tool 22 having an opening width larger than the outer diameter thereof in a non-contact state from above.

  When the lower end of the heat absorbing / dissipating element 3 is placed on the drain receiving device 22, an element fixing screw 23 as a stopper is inserted into the through hole 17 f formed in one side 17 a of the front and rear element lower support frames 17 from the lower side and the drain. By inserting the front end side of the element fixing screw 23 into the lower end portion of the stopper insertion hole 3f in the heat-absorbing / dissipating element 3 by inserting it into the through-hole 22h formed in the leg portion 22C of the receiver 22, The element lower support frame 17 is fixedly connected.

  That is, the lower bend pipe 4c and the heat absorbing / dissipating element 3 are not in direct contact with the front and rear element lower support frames 17, and the lower bend pipe 4c is not subjected to a supporting load (particularly gravity load). Thus, the heat absorbing / dissipating element 3 is supported by the front and rear element lower support frames 17, whereby dew condensation water is generated on the surface of the element lower support frame 17 as the heat transfer tubes 4 and the heat absorbing / dissipating element 3 are cooled. In addition to preventing this as much as possible, the unitary weight of the meandering heat transfer tube 4 and the plurality of heat absorbing / dissipating elements 3 is stably supported with sufficient strength without difficulty.

  As shown in FIGS. 9 and 11, the bottom 22A of the drain receiving tool 22 is formed in a rounded rectangular outline in which the corners of the four corners are formed in an arc shape, and a side wall 22B is formed on the periphery of the bottom 22A. The upper surface of the bottom portion 22 </ b> A is integrally formed, and the strip-shaped mounting surface 22 b along the front-rear direction contacting the lower end surface of the heat absorbing / dissipating element 3 and the dew condensation water flowing down from each of the absorbing / dissipating element 3 are front and rear. A large number of flow guide grooves 22 d that flow and guide to the slit-shaped drain port portions 22 a along the direction are formed in a state of being alternately positioned along the longitudinal direction of the drain receiver 22.

  As shown in FIG. 12, the leg portion 22C of the drain receiver 22 has an annular leg plate 22e integrally formed on the bottom surface of the bottom portion 22A in a state where an annular rectangular space is formed between the drain receiving portion 22D and the outer peripheral surface of the drain tube portion 22D. The reinforcing plate 22f and the reinforcing column 2g are integrally formed at a plurality of locations between the inner peripheral surface of the annular leg plate 22e and the outer peripheral surface of the drain cylinder 22D.

  As shown in FIGS. 4 and 10, in a state where the leg portion 22 </ b> C of the drain receiver 22 is in contact with a part of the upper surface of the one side portion 17 a of the front and rear element lower support frames 17, other than the contact portion. Since a space S4 is formed between the lower surface of the bottom 22A of the drain receiver 22 and the upper surface of the one side portion 17a of the element lower support frame 17, further propagation of cold heat from the heat absorbing / dissipating element 3 to the element lower support frame 17 is further achieved. It can be effectively suppressed.

  The front / rear width of the drain receiver 22 is configured to be larger than the front / rear width of the lower end surface of the heat absorbing / dissipating element 3 and the maximum front / rear width of the element lower support frame 17 in the mounted state (maximum mounted front / rear width). The length in the left-right direction of the drain receiver 22 is configured to be slightly longer than the parallel arrangement dimension of the heat absorbing / dissipating element 3.

  The front / rear width of the drain pan 18 is larger than the front / rear width of the arrangement area of the front / rear element lower support frame 17, and the front-end refracting portion of the other side part 17b in the L-shaped cross-sectional shape of the front / rear element lower support frame 17 17c is located on the lower side of each element lower support frame 17 in the above-described line symmetrical arrangement, and is inclined so as to approach the front and rear and the inner side toward the lower side. Even if condensed water is generated on the surface of the element lower support frame 17 as the heat transfer tube 4 and the heat absorbing / dissipating element 3 are cooled separately from the condensed water flowing down from the heat absorbing / dissipating element 3 received by the drain pan 18 through the portion 22D, the frame Condensed water on the surface of the tip end refracting portion 17c (inclined posture in the other side portion 17b of each element lower support frame 17) It is to flow down by transmitted one example) of the swash lower surface portion, reliably accept into the interior of the drain pan 18.

  On the other hand, as shown in FIGS. 3, 5, and 9, the pair of front and rear element upper support frames 13 arranged in the upper case portion 1 </ b> A is also a frame having a substantially L-shaped cross section like the element lower support frame 17. These front and rear element upper support frames 13 are formed of a material, and in the side view, inward portions thereof in the L-shaped cross-sectional shape are opposed to each other, and the tip refracting portions 13c in the respective other side portions 13b are formed. They are arranged in a line-symmetric posture that is almost horizontal.

  In addition, the front and rear element upper support frames 13 are arranged in a parallel posture in which a gap S2 is formed between them in this line target posture, and the upper end of the heat absorbing / dissipating element 3 projects from the upper end. The upper bend pipe 4b, which is a heat pipe, is inserted from the lower side into the gap S2 having an opening width larger than the outer diameter thereof, and is opposed from the lower side to the tip refracting part 13c of the other side part 13b in each element upper support frame 13. An interchangeable gap S3 is provided between the lower surface of the tip refracting portion 13c.

  The upper end of the heat-absorbing / dissipating element 3 has the element fixing pin 24 as a stopper upward in the state where it faces the tip end refracting part 13c in the horizontal posture of each element upper support frame 13 from below through the accommodation gap S3. Is inserted into the upper end portion of the stopper insertion hole 3f in the heat-absorbing and radiating element 3, by penetrating the tip-end refracting portion 13c of the element upper support frame 13 from the front to the rear. It is fixed to the support frame 13.

  That is, also on the upper end side of the heat absorbing / dissipating element 3, the upper bend tube 4b and the heat absorbing / dissipating element 3 are not in direct contact with the element upper support frame 13, and the upper bend tube 4b is supported with a supporting load (particularly horizontal). The upper end portion of the heat absorbing / dissipating element 3 is supported by the front and rear element upper support frames 13 without applying a load having a directional component, so that the element upper support frame is accompanied by cooling of the heat transfer tube 4 and the heat absorbing / dissipating element 3. 13 prevents the generation of dew condensation water as much as possible, and stably supports the integral weight of the meandering heat transfer tube 4 and the plurality of heat absorbing / dissipating elements 3 without difficulty.

  The other side portion 13b in the L-shaped cross-sectional shape of the front and rear element upper support frames 13 is positioned on the lower side of each element upper support frame 13 in the above-described line-symmetrical arrangement, and the tip refracting portion 13c in a horizontal posture is provided. Except for the lower side, the inclined posture is closer to the front and rear and the inner side, so that even if condensed water is generated on the surface of the element upper support frame 13 due to the cooling of the heat transfer tubes 4 and the heat absorbing and radiating elements 3 The condensed water on the surface of the frame is transmitted to the other side portion 13b (an example of the inclined lower surface portion) in the inclined posture of each element upper support frame 13, and is brought close to the front and rear inward as much as possible (that is, the drain receiver 22 In a state in which the catch is surely received).

  In the above element support structure, the element fixing screw 23 and the element fixing pin 24 prevent horizontal displacement and rotation around the vertical axis of the heat absorbing / dissipating element 3, and the lower end of the heat absorbing / dissipating element 3 is fixed to the element. By connecting to the element lower support frame 17 with the screw 23, the absorption and radiation element 3 is prevented from being lifted.

  Further, the upper end of the heat absorbing / dissipating element 3 is opposed to the tip refracting portion 13c of the element upper support frame 13 with the accommodation clearance S3, and the upper end of the absorbing / dissipating element 3 is opposed to the stopper insertion hole 3f. By fixing to the element upper support frame 13 by insertion, thermal expansion and contraction of the heat absorbing and radiating element 3 due to cooling and heating is caused to slide relative to each other in the vertical direction between the element fixing pin 24 and the stopper insertion hole 3f. In this state, an excessive load is prevented from acting on each frame due to thermal expansion / contraction (particularly thermal expansion) of the heat absorbing / dissipating element 3.

  The pair of front and rear upper frames 12 is formed of a frame material having a C-shaped engagement groove 12a having an upper cross-sectional opening upward, and the upper frame 12 has an opening of the engagement groove 12a. It arrange | positions in the state exposed indoors along the side edge of the upper surface panel 11 in 1 A of upper cases.

  As shown in FIGS. 1 and 5, the rear upper frame 12 is fitted with a single bolt 25 that is prevented from coming off by inserting the bolt head into the engagement groove 12 a. Are connected in a non-rotatable manner to the lateral side portion 27a of the L-shaped cross-sectional fall prevention tool 27 by screwing the nut 26 to the bolt 25.

  That is, the fall prevention tool 27 is moved along the engagement groove portion 12a together with the bolt 25 in a state in which the rotation prevention tool 27 is prevented from rotating around the vertical axis, so that the fall prevention tool 27 is appropriately connected to the rear side wall W. Is selected in accordance with the situation of the back side chamber wall W, and the fall prevention device 27 is fixed to the engagement groove portion 12a by tightening the nut 26 with respect to the bolt 25 at the appropriate connection position, and the vertical side portion of the fall prevention device 27 27b is screw-connected to the rear side wall W to prevent the indoor unit 1 from falling down due to an earthquake or the like.

  On the other hand, as shown in FIG. 4, the pair of front and rear lower frames 16 is formed of a frame material having a C-shaped engagement groove portion 16 a having a transverse cross-sectional shape that opens downward. The base 21 is connected to the lower frame 16 by a base connecting bolt 28 that is prevented from coming off by inserting a bolt head into the engaging groove 16 a and a nut 29 that is screwed to the bolt 28.

  The upper frame 12 and the lower frame 16 provided with engaging groove portions 12a and 16a having a C-shaped cross section are formed of a common frame material, and the common frame material provided with the engaging groove portions 12a and 16a is engaged with the same. By using the groove portions 12a and 16a in different positions depending on the state in which the groove portions 12a and 16a are located in the upper portion of the frame and the state in which the groove portions 12a and 16a are located in the lower portion of the frame, the common frame material is used for both the upper frame 12 and the lower frame 16.

  Similarly, the element upper support frame 13 and the element lower support frame 17 having an L-shaped cross section are also formed of a common frame material, and the common frame material having an L-shaped cross section is formed of the L-shape. By using different postures between the one side portions 13a, 17a in the horizontal cross-sectional shape in a horizontal posture and the state in which the tip refracting portions 13c, 17c in the other side portions 13b, 17b are in a horizontal posture, it is common The frame material is also used as the element upper support frame 13 and the element lower support frame 17.

  That is, by using the common frame material in this way, the required number of frame materials is reduced and the manufacturing cost of the indoor unit 1 is reduced.

  As shown in FIGS. 2, 3, and 4, inside the lower case portion 1 </ b> B, a space around the element lower support frame 17 and the drain pan 18 is formed, and the inner surface of the front panel 14 and the rear panel 7 are formed. A molded heat insulating material 30 having an outer shape matching the inner surface is filled, and this molded heat insulating material 30 is divided into a front divided portion 30a and a rear divided portion 30b, and the front divided portion 30a is formed on the front panel 14. The rear divided portion 30 b is attached to the inner surface of the lower end of the back panel 7.

  That is, in the assembly of the indoor unit 1, the front panel 14 and the rear panel 7 of the lower case part 1B are assembled so that the molded case 30 is filled with the molded heat insulating material 30 and the molding is performed. By providing the heat insulating material 30, it is possible to prevent the descending cold air from the element housing portion 2 from entering the inside of the lower case portion 1 </ b> B, thereby causing condensation on the outer surface of the front panel 14 due to the cold air intrusion and Condensation is prevented from occurring on the outer surface of the lower end portion of the back panel 7, and at the same time, condensation is prevented from occurring on the outer surface of the drain pan 18 caused by the received condensed water.

  As shown in FIG. 6, in the left and right side column case portions 1 </ b> C, column-shaped molded heat insulating materials 31 having outer shapes matching the inner surface of the side column panel 8 and the outer surface of the side column frame 9 are provided. Filling is performed in a state of being interposed between the panel 8 and the side column frame 9, thereby preventing dew condensation on the outer surface of the side column panel 8.

  Further, by interposing the outer surface side heat insulating material 6b of the blocking plate 6 between the inner surface side plate material 6a in the left and right side surface portions of the closing plate 6 and the inner side surface of the side column frame 9 that faces and opposes the side plate frame 9 As shown in FIG. 9, the pair of front and rear element lower support frames 17 has resin heat insulating spacers 32 interposed between the side column frames 9 at both ends thereof, as shown in FIG. It is connected to the side pillar frame 9. Thereby, the cooling heat conduction from the element lower support frame 17 to the side column frame 9 is also suppressed, and the generation of condensation on the side column frame 9 and the generation of condensation on the outer surface of the side column panel 8 are more reliably prevented.

  The molded heat insulating material 31 in the left and right side column case portions 1C is formed with a pipe insertion notch 31a extending in the vertical direction, and is connected to one end of the meandering heat transfer tube 4 at the lower portion of the element housing portion 2. The refrigerant pipe 5a is led to the upper case part 1A through the pipe insertion notch 31a in the left and right side column case part 1C, and the drain pipe 19 from the drain pan 18 is connected to the left and right side column case part 1C. It is made to guide to the upper case portion 1A through the notch 31a for pipe insertion.

  That is, the three pipes of the transition refrigerant pipe 5a and the drain pipe 19 led to the upper part through these pipe insertion notches 31a and the transition refrigerant pipe 5b connected to the other end of the meandering heat transfer pipe 4 at the upper part of the element housing portion 2. The three pipes 5a, 5b, 19 are made to extend from the upper case portion 1A in a state where the above three tubes 5a, 5b, 19 are used by utilizing the piping through holes in the upper part of the room wall used in a general wall-mounted air conditioner. It can be extended outside the room.

  In addition, when the through-hole for piping of the chamber wall lower part can be ensured, you may extend the said 3 pipes 5a, 5b, and 19 through the through-hole for piping of the lower chamber wall.

  As shown in FIGS. 3 and 5, a heat insulating material 6 c connected to the rear surface side heat insulating material 6 b of the closing plate 6 in the assembled state is pasted on the inner surface of the upper surface of the rear panel 7 which is the rear panel of the upper case portion 1 </ b> A. As shown in FIG. 1, the upper case portion 1 </ b> A includes an operation lamp and an abnormal lamp on / off operation provided on the front panel 10, and a remote control transmission signal received by a receiving portion provided on the front panel 10. A controller 33 for performing the above-described processes is incorporated.

  Further, as shown in FIG. 4, the drain pan 18 is provided with a strainer 34 for collecting foreign matters such as dust in the drainage discharged to the drain pipe 19 at the drain port of the drain pan deep bottom portion 18a (that is, the connection port of the drain pipe 19). And the first and second float switches 35a and 35b that are turned on and off by a change in the water level in the drain pan are separately provided on the deep bottom portion 18a and the bottom portion in the vicinity thereof. Drainage control such as starting and stopping the drain pump 20 is also performed based on the on / off operation of the float switches 35a and 35b.

  Specifically, regarding the drainage control, both the first and second float switches 35a and 35b are turned on when the water level in the drain pan 18 becomes higher than each on-off water level, and turned off when the water level becomes lower than each on-off water level. In a situation where the stored water in the drain pan 18 is appropriately discharged by the on / off operation of the drain pump 20 based on the on / off operation of the first float switch 35a, the second float switch 35b is not turned on. As described above, the on / off water level of the second float switch 35b is set higher than the on / off water level of the first float switch 35a.

  As a specific control operation of the controller 33, when the first float switch 35 a is turned on due to a rise in the water level, the controller 33 starts the drain pump 20 and starts draining from the drain pan 18.

  When the first float switch 35a is turned off due to a drop in the water level due to the start of drainage, the controller 33 starts measuring the set drainage time T1, and at this timing, the set drainage time T1 from the time when the first float switch 35a is turned off. When has elapsed, the controller 33 stops the drain pump 20 and stops drainage from the drain pan 18.

  That is, during the cooling operation, the dew condensation water continuously flows into the drain pan 18, whereas the water level in the drain pan 18 is intermittently operated by the drain pump 20 based on the on / off operation of the first float switch 35a as described above. Is kept lower than the on / off water level of the second float switch 35b.

  On the other hand, in response to the inflow of condensed water into the drain pan 18, the water level in the drain pan 18 rises above the on / off water level of the second float switch 35b due to poor drainage due to the failure of the first float switch 35a and the second float switch 35b. When the ON operation is performed, the controller 33 stops the compressor and stops the circulation of the refrigerant R, and activates the drain pump 20 to start draining from the drain pan 18.

  The controller 33 starts measuring the set maintenance time T2 when the second float switch 35b is turned on. When the set maintenance time T2 elapses from the time when the second float switch 35b is turned on at this time, the controller 33 is started. Stops the drain pump 20.

  That is, in response to the occurrence of defective drainage, the drain pump 20 is operated over the set maintenance time T2 in a state in which the condensed water is stopped after the compressor is stopped, so that the stored water in the drain pan 18 whose water level has risen. Is quickly discharged, thereby preventing a water leakage trouble that the stored water overflows from the drain pan 18.

  The set maintenance time T2 is set to a time sufficient to discharge the entire amount of residual condensed water flowing into the drain pan 18 even after the compressor is stopped by turning on the second float switch 35b. It is.

  The capacity of the drain pan 18 is a capacity capable of receiving and storing the entire amount of residual condensed water flowing into the drain pan 18 even after the compressor is stopped due to the ON operation of the second float switch 35b. However, even when the drain pump 20 itself is defective, it is possible to avoid a water leakage trouble that the stored water overflows from the drain pan 18.

  Further, in this example, as the set drainage time T1, the water level at the time when the first float switch 35a is turned off is lowered to the drainage port portion (that is, the bottom surface of the drain pan deep bottom portion 18a) by drainage by the operation of the drain pump 20. The time required is set.

  The drain pump 20 is a pump having a check valve function to prevent the backflow of drainage from the drain pipe 19 toward the drain pan 18. The drain pump 20 extends downward from the drain pan 18. This is interposed in the pocket piping portion of the drainage pipe 19 (that is, the piping portion in a water pool state), thereby generating abnormal noise, pump failure, etc. in combination with the above setting of the set drainage time T1. The drain operation of the drain pump 20 (that is, the pump operation in a state where the water to be sent does not exist in the pump) is prevented.

[Another embodiment]
Another embodiment of the present invention will be listed below.

  In the above-described embodiment, the example in which the circulating refrigerant R of the refrigeration circuit is passed through the heat transfer tube 4 as the heat medium that is passed through the heat transfer tube 4 is described. However, the heat medium that is passed through the heat transfer tube 4 is cold water, brine, or ice water. It may be a slurry or the like.

  The cross-sectional shape of each of the element lower support frame 17 and the element upper support frame 13 is not limited to the cross-sectional shape shown in the above-described embodiment, and various changes can be made.

  Moreover, although the example which opens the element accommodating part 2 only with respect to the front of the indoor unit 1 was shown in the above-mentioned embodiment, the element accommodating part 2 was made into the front and back of the indoor unit 1 in the form which abbreviate | omitted the obstruction | occlusion board 6. Accordingly, the air conditioning by the cold air outflow or the warm air outflow from the element housing portion 2 may be performed on the front indoor region and the rear indoor region of the indoor unit 1.

  In the above-described embodiment, the common slit-shaped drain port 22a that guides the condensed water flowing down from each of the heat absorbing and radiating elements 3 to the drain pan 18 side is formed on the bottom portion 22A of the drain receiving device 22. You may form the some drainage port part 22a which guides the dew condensation water which flows down from the thermal radiation element 3 to the drain pan 18 side separately, respectively.

  In the above-described embodiment, the drain receiver 22 is configured to have a length corresponding to the parallel arrangement region of the heat absorbing / dissipating elements 3, but is configured to have a length corresponding to the installation region of each absorbing / dissipating element 3, A drain receiver 22 may be disposed between each of the lower end portion of the heat absorbing / dissipating element 3 and the element lower support frame 17.

The cross-sectional shapes of the drain receiver 22 and the drain pan 18 are not limited to the cross-sectional shapes shown in the above-described embodiments, and various changes can be made.
The drain receiver 22 is not limited to resin, but may be a low heat transfer metal, ceramic, or a resin film formed by appropriate means such as resin coating around the metal.

3 Thermal absorption element (absorption element)
4 Heat transfer tube R Cooling medium 17 Support frame (element lower support frame)
4c Protruding heat transfer tube (lower bend tube)
S1 Clearance 18 Drain pan 22 Drain holder 22A Bottom 22C Leg 22D Drain cylinder 22a Drain port 23 Fixing screw

Claims (9)

A vertical endothermic element having a heat transfer tube passing through the body, a support frame that supports the lower end of the endothermic element, and a drain pan that receives dew condensation water flowing down from the endothermic element at a position below the support frame; An air conditioner that cools the air around the heat absorbing element by passing a cooling medium through the heat transfer tube and cooling the heat absorbing element,
The dew condensation water flowing down from the heat absorption element is received between the lower end portion of the heat absorption element and the support frame, and lower than the support frame that guides the dew condensation water received to the drain pan without touching the support frame. An air conditioner with a heat-conducting drain receiver.   The air conditioner according to claim 1, wherein a drainage cylinder portion is provided on a lower surface of the bottom portion of the drain receptacle to guide the condensed water discharged from the drainage port portion of the bottom portion to a lower position where it does not touch the support frame. apparatus.   The air conditioner according to claim 1 or 2, wherein a leg portion that abuts a part of the upper surface of the support frame is provided on a lower surface of the bottom portion of the drain receiver.   The support frame is disposed in a pair of front and rear with a gap through which a heat transfer tube protruding from the lower end of the heat absorbing element is inserted in a non-contact state, and the drain receiver extends over the upper surfaces of the pair of front and rear support frames. The air conditioner according to any one of claims 1 to 3, wherein the air conditioner is placed in a non-contact state with a heat transfer tube protruding from a lower end of the heat absorbing element.   The drain receiver is configured to have a length corresponding to a parallel arrangement region of the heat absorbing elements, and condensed water flowing down from each of the heat absorbing elements is flowed down to the drain pan side at the bottom of the drain receiver. The air conditioning apparatus according to any one of claims 1 to 4, wherein a common drain port portion is formed.   The air conditioner according to any one of claims 1 to 5, wherein a front and rear width of the drain receiver is configured to be larger than a front and rear width of a lower end of the heat absorbing element and a front and rear width of the support frame.   The air conditioner according to claim 2, wherein the drain tube portion of the drain receptacle is fitted and held on the support frame from above.   The air conditioner according to claim 3, wherein a fixing screw inserted through the leg portion of the drain receiver from the support frame is screwed and fixed to a lower end portion of the heat absorbing element.   The air conditioner according to any one of claims 1 to 8, wherein the support frame is made of metal, and the drain receiver is made of resin.

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