JP2019090583A - Exterior panel of outdoor unit of engine-driven type air conditioning device - Google Patents

Abstract

To provide an exterior panel of an outdoor unit of an engine-driven type air conditioning device that has improved performance for preventing water from entering the outdoor unit.SOLUTION: An exterior panel 1 is attached to a rectangular frame-like part FP constituting a side surface part of an outer hull of an outdoor unit A1 of an engine-driven type air conditioning device AC. The exterior panel 1 comprises an upper panel 10 covering an upper part of a region in the frame-like part FP, and a lower panel 20 covering a portion below a portion covered by the upper panel 10 out of the region in the frame-like part FP. Cutout parts CU1, CU2, CU3, CL1, CL2, and CL3 into which a refrigerant pipe 3A serving as a circulation path for a refrigerant is inserted are provided in at least one of a lower edge part 11a of the upper panel 10 and an upper edge part 21a of the lower panel 20. The lower edge part 11a of the upper panel 10 is arranged outside the outdoor unit A1 as viewed from the upper edge part 21a of the lower panel 20. Portions other than the cutout parts out of the lower edge part 11a of the upper panel 10 and the lower panel 20 are overlapped.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an exterior panel of an outdoor unit of an engine drive type air conditioner.

  As described in Patent Document 1 below, an engine-driven air conditioner is known. Generally, the shell of the outdoor unit of such an air conditioning apparatus is provided with the flame | frame comprised from several frame | skeleton members, and the several exterior panel attached to the said flame | frame, as shown to FIGS. A part of the side surface of the frame is formed in a rectangular frame shape. The exterior panel attached to the frame-like portion includes an upper panel covering an upper portion of the region inside the frame-like portion, and a lower panel covering a portion of the region below the upper panel. The upper and lower panels are respectively formed of substantially rectangular plate members. The peripheral edge portion of the plate material is bent substantially at right angles to the main body portion (a portion excluding the peripheral edge portion). That is, a peripheral wall extending from the peripheral edge of the main body to the inside of the outdoor unit is provided. The upper panel and the lower panel are attached to the frame-like portion such that the main body portion is directed to the outside of the outdoor unit, and the peripheral wall portion is positioned inside the outdoor unit. In this state, the lower wall (lower wall) of the peripheral wall of the upper panel faces the upper wall (upper wall) of the peripheral wall of the lower panel (FIG. 11). reference).

  Further, the upper wall of the lower panel and a part of the upper edge of the main body are notched. A refrigerant pipe extends from this notch. In this notch, a grommet is used to protect damage to the outer periphery of the refrigerant pipe and to closely contact the inner peripheral edge of the notch and the outer peripheral edge of the refrigerant pipe to suppress the entry of rainwater into the outdoor unit. It is fitted.

  The intermediate portion of the refrigerant pipe extends in a predetermined direction in the vicinity of the upper panel of the space in the outdoor unit, and when the upper panel is removed, the corresponding portion of the refrigerant pipe is exposed. A valve is provided at that part of the refrigerant pipe. At the time of installation of the outdoor unit or after the installation, the valve can be operated with the upper panel removed, and operations such as injection of the refrigerant into the refrigerant pipe, replacement of the refrigerant, and the like can be performed.

  Moreover, when installing an engine drive-type air conditioning apparatus, an indoor unit and an outdoor unit are conveyed to an installation place as a separate body. In this state, in the outdoor unit, the refrigerant pipe is extended to a position slightly below the upper panel (near the notch of the lower panel). With the outdoor unit mounted at the installation location, the lower panel (and upper panel) of the outdoor unit is removed. Next, the refrigerant pipe extending from the indoor unit side to the outdoor unit side is welded to the refrigerant pipe in the outdoor unit. Next, the lower panel is moved upward from below the refrigerant pipe, and the refrigerant pipe is inserted into the notch of the lower panel. Next, the lower panel is fixed to the lower portion of the frame portion. Finally, the grommet is fitted into the notch.

JP 2004-219019 A

  By the way, a compressor and an engine are accommodated in the outdoor unit of the engine drive type air conditioner. These devices are lubricated with lubricating oil. A container is provided at the bottom of the outdoor unit, and when the lubricating oil leaks from a compressor, an engine, a tank storing the lubricating oil, etc., the lubricating oil is received by the container. Here, as described above, although the lower wall portion of the upper panel and the upper wall portion of the lower panel of the exterior panel face each other, there is a possibility that rainwater may infiltrate into the outdoor unit from the gap (see FIG. 11) . When rainwater infiltrates into the outdoor unit and the lubricating oil leaks while rainwater is accumulated in the container, the lubricating oil may overflow from the container and the lubricating oil may leak to the outside of the outdoor unit There is.

  The present invention has been made to address the above problems, and an object thereof is an exterior panel of an outdoor unit of an engine drive type air conditioning apparatus, which provides an exterior panel having an improved ability to prevent water immersion into the interior of the outdoor unit. It is to do. In the following description of each component of the present invention, the reference numerals of corresponding parts of the embodiment are described in parentheses in order to facilitate understanding of the present invention, but each component of the present invention is It should not be construed as limited to the configuration of the corresponding portion indicated by the reference numerals of the embodiment.

  In order to achieve the above object, the feature of the present invention is to attach to a rectangular frame (FP) that constitutes a side part of an outer shell (FM) of an outdoor unit (A1) of an engine driven air conditioner (AC) Upper panel (10) covering the upper part of the region in the frame portion, and a lower portion covering the lower portion of the region in the frame portion than the portion covered by the upper panel A refrigerant pipe (A3) as a refrigerant circulation path is inserted through at least one of a panel (20) and the lower edge (11a) of the upper panel and the upper edge (21a) of the lower panel. Notches (CU1, CU2, CU3, CL1, CL2, CL3) are provided, and the lower edge of the upper panel is disposed outside the outdoor unit when viewed from the upper edge of the lower panel, and the upper panel is Lower edge and the front of the lower panel Part with each other except for the cut-out portion are stacked, lies in the fact that the exterior panel.

  In this case, a portion where the lower edge portion of the upper panel and the upper edge portion of the lower panel are overlapped may be fastened using a fastening member (BT, NT).

  Further, in this case, the outer side surface of the upper panel and the outer side surface of the lower panel may be located in the same plane.

  In the exterior panel of the outdoor unit of the engine drive type air conditioner according to the present invention, the outer surface of the upper edge of the lower panel (the surface directed to the outside of the outdoor unit) and the inner surface of the lower edge of the upper panel (outdoor) The plane facing the inside of the aircraft is overlapping. Therefore, no gap as shown in FIG. 11 is formed at the boundary between the upper and lower panels. Therefore, according to the present invention, it is possible to provide an exterior panel having improved performance for preventing the entry of rainwater into the outdoor unit.

  Also, another feature of the present invention is that the notches are respectively provided at the lower edge of the upper panel and the upper edge of the lower panel, and the upper panel and the lower panel are attached to the frame-like part In an open state of the engine-driven air conditioner, the notch portion of the upper panel and the notch portion of the lower panel communicate with each other, and a grommet is fitted to the inner peripheral edge portion of the notch portion. It is to be an exterior panel of the machine.

  According to the exterior panel of the outdoor unit of the engine drive type air conditioner pertaining to the present invention, the gap as shown in FIG. 12 is not formed around the grommet. Therefore, according to the present invention, it is possible to provide an exterior panel having the rainwater infiltration prevention performance further improved into the outdoor unit.

It is a block diagram showing an outline of a gas engine drive type air harmony device concerning the present invention. It is a front view which shows the inside of an outdoor unit. It is a perspective view which shows the external appearance of an outdoor unit. It is a disassembled perspective view of the exterior panel of an outdoor unit, and its peripheral part. It is sectional drawing which shows the state which the lower edge part of the upper panel and the upper edge part of the lower panel overlapped and closely_contact | adhered. FIG. 6 is a block diagram showing a refrigerant circulation path when one indoor unit is operated as a cooling device and the other indoor unit is operated as a heating device. It is a block diagram which shows the circulation path of a refrigerant at the time of making all two indoor units operate as a heating device. FIG. 8 is a block diagram showing a refrigerant circulation path when both of the two indoor units are operated as a cooling device. It is a perspective view which shows the external appearance of the outdoor unit of the conventional engine drive type air conditioning apparatus. It is the disassembled perspective view of the exterior panel of the outdoor unit of the conventional engine drive type air conditioning apparatus, and its periphery part. It is sectional drawing which shows the clearance gap between the lower edge part of the upper panel of the conventional engine drive type air conditioning apparatus, and the upper edge part (part except notch part) of a lower panel. It is sectional drawing which shows the clearance gap between the lower edge part of the upper panel of the conventional engine drive type air conditioning apparatus, and a grommet.

  Hereinafter, the exterior panel 1 which concerns on one Embodiment of this invention is demonstrated. First, an outline of a gas engine drive type air conditioner AC to which the exterior panel 1 is applied will be described.

  As shown in FIG. 1, the gas engine drive type air conditioner AC includes an outdoor unit A1 and indoor units A2a and A2b. Further, the gas engine drive type air conditioner AC includes a refrigerant pipe A3 as a flow path of a refrigerant circulating between the outdoor unit A1, the indoor unit A2a and the indoor unit A2b. That is, each component of outdoor unit A1, indoor unit A2a, and indoor unit A2b is connected by the some pipe | tube which comprises refrigerant | coolant pipe | tube A3. The gas engine drive type air conditioner AC can operate one indoor unit (for example, the indoor unit A2a) as a cooling device and at the same time operate the other indoor unit (for example, the indoor unit A2b) as a heating device Is configured. The configuration of the devices in the outdoor unit A1 and the indoor units A2a and A2b is the same as that of a known air conditioner. The configurations of the outdoor unit A1 and the indoor units A2a and A2b will be briefly described below. In addition, although this embodiment demonstrates the example provided with 2 units | sets of indoor units, gas engine drive type air conditioning apparatus AC may be equipped with more indoor units than this embodiment.

  The outdoor unit A1 includes a compressor A11, an oil separator A12, a four-way switching valve A13, an outdoor heat exchanger A14, an expansion valve A15, a receiver A16, an accumulator A17, a check valve A18 and an oil pan A19 (see FIG. 2), and a housing H (see FIG. 3). The compressor A11 includes a gas engine (not shown) and is driven by the rotational driving force of the gas engine. The sliding portion of the compressor A11 (including the gas engine) is lubricated using lubricating oil. The compressor A11 has an inlet and an outlet. The compressor A11 sucks a low-pressure gaseous refrigerant from the suction port, compresses the sucked refrigerant, and discharges it from the discharge port. The oil separator A12 separates and stores lubricating oil contained in the refrigerant discharged from the compressor A11.

  The four-way switching valve A13 has four ports P1 to P4. In the four-way switching valve A13, the port P1 communicates with the port P4 and the port P2 communicates with the port P3 (see FIG. 6), the port P1 communicates with the port P2, and the port P3 communicates. And the port P4 can be switched to the second state (see FIG. 7) in communication.

  The outdoor heat exchanger A14 introduces the refrigerant in the refrigerant pipe A3 and exchanges heat between the introduced refrigerant and the ambient air. Expansion valve A15 decompresses the refrigerant. The receiver A 16 temporarily stores the liquefied refrigerant.

  The accumulator A17 separates the liquid refrigerant and the gaseous refrigerant. The check valve A 18 allows the flow of the refrigerant in a predetermined direction and prohibits the flow in the opposite direction. The oil separator A12, the receiver A16, and the accumulator A17 are each formed in a substantially cylindrical shape extending in the vertical direction (vertical direction).

  The oil pan A19 is provided at the bottom of the outdoor unit A1. The oil pan A19 is a plate-like member. When lubricating water of the compressor A11 (including gas engine) leaks, the lubricating oil is received. Even if all the lubricating oil of the compressor A11 leaks, the volume of the oil pan A19 is set to an extent that all of them can be received.

  The configurations of the indoor units A2a and A2b are the same. The indoor units A2a and A2b each include an indoor heat exchanger A21, an expansion valve A22, and a flow dividing device A23. The indoor heat exchanger A21 introduces a refrigerant and exchanges heat between the introduced refrigerant and the ambient air. The expansion valve A22 reduces the pressure of the refrigerant. The flow dividing device A23 includes two on-off valves A23a and A23b.

  Below, the connection relation of each component of gas engine drive-type air conditioning apparatus AC is demonstrated. The discharge port of the compressor A11 and the port P1 of the four-way switching valve A13 are connected via an oil separator A12. The port P4 of the four-way switching valve A13 and one end of the outdoor heat exchanger A14 are connected. The port P3 of the four-way switching valve A13 and the suction port of the check valve A18 are connected. The discharge port of the check valve A18 and the suction port of the compressor A11 are connected via an accumulator A17. The port P2 of the four-way switching valve A13 is closed.

  Further, the other end of the outdoor heat exchanger A14 (opposite to the four-way switching valve A13) and the expansion valve A15 are connected. The expansion valve A15 and the expansion valve A22 are connected via the receiver A16.

  Further, one end of the indoor heat exchanger A21 is connected to an intermediate point (branch point A3a) of the four-way switching valve A13 and the oil separator A12 via the on-off valve A23a. Further, one end of the indoor heat exchanger A21 is connected to an intermediate point (branch point A3b) between the check valve A18 and the accumulator A17 via the on-off valve A23b. The other end of the indoor heat exchanger A21 is connected to the expansion valve A22.

  Here, the portion of the refrigerant pipe A3 through which the liquid refrigerant flows is referred to as a liquid pipe A31. Further, in the refrigerant pipe A3, a portion through which the high pressure gaseous refrigerant flows is called a high pressure gas pipe A32, and a portion through which the low pressure gaseous refrigerant flows is called a low pressure gas pipe A33.

  An intermediate portion between the liquid pipe A31, the high pressure gas pipe A32, and the low pressure gas pipe A33 extends in the vertical direction along a portion which is an outer peripheral surface of the receiver A16 and faces the outside of the outdoor unit A1. That is, intermediate portions of the liquid pipe A31, the high pressure gas pipe A32, and the low pressure gas pipe A33 are arranged parallel to one another along the side surface of the outdoor unit A1 (see FIG. 2). Hereinafter, the alignment direction of the liquid pipe A31, the high pressure gas pipe A32, and the low pressure gas pipe A33 is referred to as the left-right direction. Also, a direction perpendicular to the vertical direction and vertical to the left and right direction is referred to as the front-rear direction. The outside of the outdoor unit A1 is defined as the front side, and the inside of the outdoor unit A1 is defined as the rear side.

  The portion on the outdoor unit A1 side of the middle portion of the liquid pipe A31, the high pressure gas pipe A32 and the low pressure gas pipe A33 and the portion on the indoor unit A2a, A2b side are connected via ball valves BV1, BV2, BV3. ing. Specifically, the ball valve BV1 is provided between the receiver A16 and the expansion valve A22. The ball valve BV2 is provided between the branch point A3a and the on-off valve A23a. The ball valve BV3 is provided between the branch point A3b and the on-off valve A23b. The ball valves BV1, BV2 and BV3 are supported by the receiver A16 via a ball valve stay.

  The various devices (compressor A11 to oil pan A19) constituting the outdoor unit A1, the refrigerant pipe A3 connecting them, the ball valves BV1, BV2 and BV3 are accommodated in the housing H (see FIG. 3 and FIG. 4) ). The housing H includes a substantially rectangular frame FM configured by combining a plurality of skeletal members. Then, a plurality of exterior panels 1, 2,... Are attached to the frame FM, and various devices and parts housed in the frame FM are covered. In the frame FM, portions positioned in the vicinity of the ball valves BV1, BV2 and BV3 are formed in a rectangular frame shape. That is, the frame-like portion FP includes plate-like skeletal members BH and BH extending in the vertical direction, and BW and BW extending in the horizontal direction. The ball valves BV1, BV2 and BV3 are located in the frame portion FP in a front view of the frame portion FP (a state seen from the front of the outdoor unit). Screw holes SU, SC, SL are formed in the framework member BH. The screw holes SU are provided at the upper end of the framework member BH. The screw hole SC is provided slightly below the central portion in the vertical direction of the framework member BH. The screw hole SL is provided at the lower end of the framework member BH. A seal member is attached to the front surface of the frame portion FP. The seal member is in close contact with the outer peripheral edge portion of the exterior panel 1 described below, and suppresses the entry of rainwater into the outdoor unit A1 from the outer peripheral edge portion of the exterior panel 1.

  Below, the structure of the exterior panel 1 is demonstrated. The exterior panel 1 is attached to the frame portion FP. In the exterior panel 1, circular through holes TH1, TH2, TH3 are formed. An intermediate portion of the liquid pipe A31, the high pressure gas pipe A32, and the low pressure gas pipe A33, which extends in the front-rear direction, is inserted into the through holes TH1, TH2, TH3.

  The exterior panel 1 comprises an upper panel 10 and a lower panel 20. The upper panel 10 covers an upper portion (a portion above the central portion in the vertical direction of the liquid pipe A31, the high pressure gas pipe A32, and the low pressure gas pipe A33) of the area inside the frame portion FP. The lower panel 20 covers a lower portion (a portion below the central portion in the vertical direction of the liquid pipe A31, the high pressure gas pipe A32 and the low pressure gas pipe A33) of the area inside the frame portion FP.

  The upper panel 10 has a front wall 11, an upper wall 12, a right wall 13 and a left wall 14. The front wall portion 11 is a rectangular plate-like portion which is perpendicular to the front-rear direction and extends in the left-right direction. The upper wall portion 12 is extended rearward (inside the outdoor unit) from the upper end of the front wall portion 11. The right wall 13 and the left wall 14 extend rearward from the right end and the left end of the front wall 11, respectively. The lower edge 11a of the front wall 11 is formed with semicircular notches CU1, CU2, and CU3 that enter upward. The notches CU1, CU2, and CU3 correspond to the upper half of the through holes TH1, TH2, and TH3. The semicircular arc shaped grommets GU1, GU2 and GU3 are respectively fitted into the notched portions CU1, CU2 and CU3. The grommets GU1, GU2 and GU3 are made of synthetic resin or synthetic rubber. Further, a pair of upper and lower through holes HU and HC are respectively formed at the right edge and the left edge of the front wall portion 11. The through holes HU and HC correspond to the screw holes SU and SC. Further, through holes HX and HX are formed between the notched portion CU1 and the notched portion CU2, and between the notched portion CU3 and the notched portion CU2.

  Notches CU1, CU2, CU3 and through holes HU, HC, HX are formed in a rectangular base material (plate material) extending in the left-right direction, and the upper edge, the right edge and the left edge of the base material are The upper panel 10 is formed by bending.

  The lower panel 20 has a front wall 21, a right wall 22 and a left wall 23. The front wall portion 21 is a rectangular plate-like portion which is perpendicular to the front-rear direction and extends in the left-right direction. The upper edge 21a of the front wall 21 is located slightly behind the main body 21b located below the upper edge 21a. That is, a step is formed between the upper edge 21a and the main body 21b. The right wall 22 and the left wall 23 extend rearward from the right end and the left end of the main body 21b, respectively.

  In the upper edge 21a, rectangular notches CC1, CC2, and CC3 that enter downward are formed. In the main body 21b, semicircular notches CL1, CL2, and CL3 are formed, which further extend downward from the notches CC1, CC2, and CC3. The notches CL1, CL2, and CL3 correspond to the lower halves of the through holes TH1, TH2, and TH3. The semicircular arc shaped grommets GL1, GL2, GL3 are respectively fitted into the notched parts CL1, CL2, CL3. The grommets GL1, GL2 and GL3 are made of synthetic resin or synthetic rubber. Further, through holes HL are respectively formed at the right edge and the left edge of the main body 21b. The through holes HL correspond to the screw holes SL. Further, through holes HY and HY are formed between the notched portion CL1 and the notched portion CL2, and between the notched portion CL3 and the notched portion CL2. The through holes HY and HY correspond to the through holes HX and HX, respectively. Nuts NT and NT are welded to the rear surface of the upper edge 21a. The nuts NT, NT and the through holes HY, HY are coaxially arranged (see FIG. 5).

  Notches corresponding to notches CC1, CC2, CC3 and notches CL1, CL2, CL3 and through holes HL, HL and holes HY, HY are formed in a rectangular base material (plate material) extending in the left-right direction The lower panel 20 is formed by bending the upper edge, the right edge and the left edge of the base material.

  When the gas engine drive type air conditioner AC is installed, the outdoor unit A1 and the indoor units A2a and A2b are separately transported to the installation location. In this state, in the outdoor unit A1, the liquid pipe A31, the high pressure gas pipe A32 and the low pressure gas pipe A33 are extended to the rear of the through holes TH1, TH2, TH3 of the exterior panel 1. The exterior panel 1 of the outdoor unit A1 is removed while the outdoor unit A1 is placed at the installation location. Next, the liquid pipe A31 extending from the indoor unit A2a, A2b to the outdoor unit A1, the tip of the high pressure gas pipe A32 and the low pressure gas pipe A33, the liquid pipe A31 in the outdoor unit A1, the tip of the high pressure gas pipe A32 and the low pressure gas pipe A33 And are welded.

  Next, the lower panel 20 is moved upward from below the liquid pipe A31, the high pressure gas pipe A32 and the low pressure gas pipe A33, and the liquid pipe A31 extends in the front and rear direction to the notches CL1, CL2 and CL3 of the lower panel 20. , The lower half of the high pressure gas pipe A32 and the low pressure gas pipe A33 are inserted. At this time, the inner peripheral portions of the grommet GL1, GL2 and GL3 are slightly trimmed so that the inner peripheral portions of the grommet GL1, GL2 and GL3 are in close contact with the outer peripheral surfaces of the liquid pipe A31, the high pressure gas pipe A32 and the low pressure gas pipe A33. May be Next, the bolts BT and BT are inserted into the through holes HL and HL, and the tips thereof are fastened to the screw holes SL and SL.

  Next, the upper panel 10 is moved downward from above the liquid pipe A31, the high pressure gas pipe A32, and the low pressure gas pipe A33, and the liquid pipe A31 extends in the front-rear direction to the notches CU1, CU2, CU3 of the upper panel 10. The upper half portions of the high pressure gas pipe A32 and the low pressure gas pipe A33 are inserted. At that time, slightly trim the inner peripheral parts of the grommet GU1, GU2 and GU3 so that the inner peripheral parts of the grommet GU1, GU2 and GU3 are in close contact with the outer peripheral surface of the liquid pipe A31, high pressure gas pipe A32 and low pressure gas pipe A33. May be

Next, a bolt BT is inserted into each of the through holes HU _and HC, and the tips thereof are fastened to the screw holes SH and SC. In this state, the upper edge 21a of the lower panel 20 is located behind the lower edge 11a of the upper panel 10, and the through holes HY, HY are located behind the through holes HX, HX. Further, the notch portions CU1, CU2, CU3 and the notch portions CL1, CL2, CL3 communicate with each other to form circular through holes TH1, TH2, TH3. In other words, the through holes TH <b> 1, TH <b> 2 and TH <b> 3 straddle the upper panel 10 and the lower panel 20. Further, the end portions of the semicircular arc grommet GL1, GL2, GL3 and the grommet GU1, GU2, GU3 are in close contact with each other to form a circular grommet G1, G2, G3. The grommet G1, G2, G3 is in close contact with the outer peripheral portion of the liquid pipe A31, the high pressure gas pipe A32 and the low pressure gas pipe A33.

  Finally, bolts BT are respectively inserted into the through holes HX, HX and the through holes HY, HY, and the tips thereof are fastened to the nuts NT, NT (see FIG. 5). Thereby, the upper edge 12 a of the lower panel 20 and the lower edge 11 a of the front wall 11 of the upper panel 10 are in close contact with each other. In this state, the front surface of the upper panel 10 (front wall portion 11) and the front surface of the lower panel 20 (main portion 21b of the front wall portion 21) are located in the same plane.

  If the upper panel 10 is removed after the gas engine drive type air conditioner AC is installed, the ball valves BV1, BV2, BV3 are exposed. By operating the ball valves BV1, BV2 and BV3 in this state, it is possible to carry out work such as injection of the refrigerant into the refrigerant pipe A3 and replacement of the refrigerant.

  Next, the operation of the gas engine drive type air conditioner AC configured as described above will be briefly described. Of the on-off valves A23a and A23b in FIGS. 6 to 8, the on-off valve painted black is closed. FIG. 6 shows an example in which the indoor unit A2a is operated as a heating device and the indoor unit A2b is operated as a cooling device. In this case, the four-way switching valve A13 is set to the first state. Further, the on-off valve A23a of the indoor unit A2a is opened, and the on-off valve A23b is closed. On the other hand, the on-off valve A23a of the indoor unit A2b is closed, and the on-off valve A23b is opened. The high pressure gaseous refrigerant discharged from the compressor A11 in this state is introduced into the oil separator A12. Part of the refrigerant discharged from the oil separator A12 is introduced into the indoor heat exchanger A21 through the high pressure gas pipe A32. While flowing through the indoor heat exchanger A21, the high-pressure gaseous refrigerant introduced into the indoor heat exchanger A21 releases heat to room air and condenses. At this time, room air is warmed by the heat released from the refrigerant. The refrigerant which has released heat to indoor air and condensed is discharged from the indoor heat exchanger A21 and introduced into the indoor heat exchanger A21 of the indoor unit A2b.

  On the other hand, among the refrigerant discharged from the oil separator A12, the refrigerant which has not been introduced into the indoor heat exchanger A21 is introduced into the outdoor heat exchanger A14 via the four-way switching valve A13. While flowing through the outdoor heat exchanger A14, the high pressure gaseous refrigerant introduced into the outdoor heat exchanger A14 releases heat and condenses in the outside air.

  The refrigerant that has released heat by condensing heat to the outside air is partially liquefied and discharged from the outdoor heat exchanger A14. And it is pressure-reduced by expanding with expansion valve A15, and it introduce | transduces into indoor heat exchanger A21 of indoor unit A2 b via liquid pipe A31. The refrigerant discharged from the indoor unit A2a described above is also introduced into the indoor heat exchanger A21 of the indoor unit A2b. While flowing through the indoor heat exchanger A21, the refrigerant introduced into the indoor heat exchanger A21 deprives the heat of the indoor air and partially evaporates. At this time, the refrigerant deprives the heat of the room air, whereby the room air is cooled.

  The refrigerant that has partially removed the heat of the room air and is partially evaporated is discharged from the indoor heat exchanger A21, and is supplied to the accumulator A17 via the low pressure gas pipe A33. Then, the low pressure gaseous refrigerant returns to the suction port of the compressor A11.

  FIG. 7 shows an example in which both the indoor unit A2a and the indoor unit A2b are operated as a heating device. In this case, the refrigerant circulates along a path indicated by an arrow in FIG. Further, for example, FIG. 8 shows an example in which both the indoor unit A2a and the indoor unit A2b are operated as a cooling device. In this case, the refrigerant circulates along a path indicated by an arrow in FIG.

  As described above, in the exterior panel 1 of the gas engine drive type air conditioner AC according to the present embodiment, the front surface of the upper edge 21 a of the lower panel 20 and the rear surface of the lower edge 11 a of the front wall 11 of the upper panel 10 Are in close contact with each other. Therefore, in the boundary portion between the upper panel 10 and the lower panel 20 and excluding the through holes TH1, TH2, and TH3, no gap as shown in FIG. 11 is formed. Further, grommet G1, G2, G3 are attached to the through holes TH1, TH2, TH3. Therefore, the gaps as shown in FIG. 12 are not formed around the grommets G1, G2 and G3. Therefore, according to the present embodiment, it is possible to suppress the entry of rainwater into the outdoor unit.

  Furthermore, the implementation of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention.

  For example, in the above embodiment, the grommet G1, G2, G3 is composed of the grommet GU1, GU2, GU3 constituting the upper half thereof and the grommet GL1, GL2, GL3 constituting the lower half thereof. Instead of this, grommets G1, G2 and G3 formed in an annular shape may be used. In this case, the grommet G1, G2, G3 is fitted in advance to the end of the refrigerant pipe A3 extending from the indoor unit A2a, A2b to the outdoor unit A1 or the end of the refrigerant pipe A3 in the outdoor unit A1. The tip of the refrigerant pipe A3 on the outdoor unit A1 side is welded to the tip of the refrigerant pipe A3 on the indoor unit A2a, A2b side. Then, the grommet G1, G2, G3 may be slid and fitted into the through holes TH1, TH2, TH3.

DESCRIPTION OF SYMBOLS 1 ... Exterior panel, 10 ... Upper panel, 11 ... Front wall part, 11a ... Lower edge part, 12 ... Upper wall part, 12a ... Upper edge part, 13 ... Right wall, 14: left wall, 20: lower panel, 21: front wall, 21a: upper edge, 21b: main body, 22: right wall, 23: Left wall portion, A1: Outdoor unit, AC: Gas engine driven air conditioner, BT, BT: Bolt, BV1, BV2, BV3: Ball valve, CL1, CL2, CL3: Notched part, CU1, CU2, CU3: Notched part, FM: Frame, FP: Frame-like part, G1, G2, G3: Grommet, NT, NT ... Nut, TH1, TH2, TH3 ... through hole

Claims (4)

It is an exterior panel attached to the rectangular frame-like part which comprises the side part of the shell of the outdoor unit of an engine drive type air conditioning apparatus,
An upper panel covering an upper portion of the area in the frame portion;
And a lower panel covering a portion below the portion covered by the upper panel in the region in the frame-like portion;
At least one of the lower edge portion of the upper panel and the upper edge portion of the lower panel is provided with a notch through which a refrigerant pipe as a refrigerant circulation path is inserted,
The lower edge portion of the upper panel is disposed on the outside of the outdoor unit as viewed from the upper edge portion of the lower panel, and the lower edge portion of the upper panel and the lower panel except for the notch portion overlap each other An exterior panel of an outdoor unit of an engine-driven air conditioner, In the exterior panel of the outdoor unit of the engine drive type air conditioner according to claim 1,
An exterior panel of an engine driven air conditioner outdoor unit, wherein a portion where the lower edge portion of the upper panel and the upper edge portion of the lower panel are overlapped is fastened using a fastening member. The exterior panel of the outdoor unit of the engine drive type air conditioner according to claim 1 or 2
An exterior panel of an outdoor unit of an engine drive type air conditioning apparatus, wherein an outer surface of the upper panel and an outer surface of the lower panel are located in the same plane. An exterior panel of an outdoor unit of an engine drive type air conditioning apparatus according to any one of claims 1 to 3.
The notches are respectively provided at a lower edge of the upper panel and an upper edge of the lower panel;
In the state where the upper panel and the lower panel are attached to the frame-like portion, the notch portion of the upper panel and the notch portion of the lower panel communicate with each other,
The exterior panel of the outdoor unit of the engine drive type air conditioning apparatus with which the grommet is engage | inserted by the inner peripheral part of the said notch part.

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