JP6149736B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner including a drain connection socket for connecting an external drain pipe to discharge drain water to the outside of a unit machine.

  Conventionally, an indoor unit of an air conditioner disposed on a ceiling of a building has been connected via a drain drainage connection pipe extending to the outer casing of the main body in order to discharge drain water generated inside the main body to the outside. A drain pipe such as opaque vinyl chloride is connected. In the installation work of the air conditioner, after confirming the drain water discharge after connecting the drain pipe to the outside of the indoor unit body, and after confirming the discharge, the drain drain connection pipe and the external drain pipe are insulated. Move on to wrap around.

  In conventional air conditioners, a drain drain hose for discharging drain is fixed to the outer wall of the main body, and an external drain pipe on the building side is connected to this to drain the drain water to the outside. Yes. And this drain drainage hose is shape | molded by the tube-shaped transparent or translucent material, and can visually observe the flow of drain water (for example, refer patent document 1).

  Further, for example, in another air conditioner, a configuration in which an external drain pipe for extending to a drainage place is connected to a socket part protruding from an indoor unit main body communicating with a drain pump for discharging drain water to the outside. The drain pump is attached to the sub-drain pan serving as a drain reservoir of the drain pan below the heat exchanger via a mounting case. The sub-drain pan is connected to a socket part protruding from the drain pan via the drain hose, the drain pan is covered with a heat insulating material to prevent condensation, and similarly the drain hose is covered with a cylindrical heat insulating material. (For example, refer to Patent Document 2).

Japanese Patent Laid-Open No. 9-210395 (page 2-3, FIG. 2-4) JP-A-5-172358 (page 2-4, FIG. 1-8)

  In the air conditioner described in Patent Document 1, it is said that after performing a drain pump test run and visually confirming the normal discharge of the drain through a transparent or translucent drain drain hose, it is covered with a heat insulating material that prevents condensation. . However, in the work of covering the insulation with the drain drain hose fixed to the outer wall of the main unit and the external drain piping connected to it, if the application of the heat insulating material to the outer wall of the main unit is not processed firmly without gaps, Condensation occurs and water drops fall into the ceiling and there are concerns about adverse effects on the building.

  Moreover, in the air conditioner described in Patent Document 2, the drain hose connected to the socket portion from the drain pan is covered in advance with a heat insulating material, and the protruding portion of the heat insulating material of this drain hose is connected to the drain pan socket portion. It is configured to cover the provided heat insulating material and allows heat insulation treatment without gaps, but after connecting pipes and hoses previously provided with heat insulating material on the outer periphery, this part is visually Since it is impossible to confirm the normal drainage of the drain, another drainage confirmation means is required, and there is a concern that the work efficiency will deteriorate.

  This invention has been made to solve the above-mentioned problems, and it is possible to easily confirm the drain water discharge visually, and to reliably install the heat insulating material on the external drain pipe connected to the air conditioner body. It is an object of the present invention to provide an air conditioner that can perform the above-mentioned and prevent condensation on the connection part.

  An air conditioner according to the present invention includes a refrigerant circuit that sequentially connects a compressor, an outdoor heat exchanger, a throttle device, and an indoor heat exchanger to circulate the refrigerant, and an outer wall of a main body that includes the indoor heat exchanger. A drain socket formed of a transparent material that drains water generated in the indoor heat exchanger to an external drain pipe and drains it to the outside, a socket part heat insulating material provided on an outer periphery of the drain socket, and the socket part heat insulation The cylindrical end portion of the material is provided with a U-shaped notch, and the drain water flowing through the drain socket from the U-shaped notch can be visually observed.

  The air conditioner of the present invention includes a refrigerant circuit that sequentially connects a compressor, an outdoor heat exchanger, a throttle device, and an indoor heat exchanger to circulate the refrigerant, and an outer wall of a main body that includes the indoor heat exchanger. A drain socket formed of a transparent material that drains water generated in the indoor heat exchanger to an external drain pipe and drains to the outside, a socket part heat insulating material provided on the outer periphery of the drain socket, and the socket part heat insulating material Since the cylindrical water end is provided with a U-shaped notch and the drain water flowing inside the drain socket can be visually observed from the U-shaped notch, it is easy to visually check whether the drain water is normally discharged. In addition to being able to perform reliably, the drain socket that protrudes from the main body and connects to an external drain pipe etc. to form a drainage flow path and the prevention of condensation on the flexible pipe and external drain pipe connected to it An effect that can be adiabatic process reliably.

It is a figure which shows the external appearance of the air conditioner in Embodiment 1 of this invention. It is a principal part enlarged view of the drain socket periphery part of the indoor unit of the air conditioner in Embodiment 1 of this invention. It is a figure which shows the external appearance of the drain socket used for the air conditioner in the form 1 of the actual condition of this invention. It is a figure which shows the state which connected the flexible pipe to the drain socket of the indoor unit of the air conditioner in the actual form 1 of this invention. It is a figure which shows the assembly of the drain socket periphery part of the indoor unit of the air conditioner in the actual form 1 of this invention. It is the external view which looked at the drain socket peripheral part of the indoor unit of the air conditioner in the actual form 1 of this invention from the downward direction. It is the external view which looked at the state which connected the flexible pipe to the drain socket of the indoor unit of the air conditioner in the actual form 1 of this invention from the downward direction. It is drain socket attachment explanatory drawing to the main body (housing | casing) of the indoor unit of the air conditioner in the actual form 1 of this invention. It is arrangement | positioning explanatory drawing of the drain socket and drain pump inside the indoor unit of the air conditioner in the form 1 of the actual condition of this invention. It is an enlarged view of the drain socket used for the air conditioner in the form 1 of the actual condition of this invention. It is explanatory drawing of the machine inner side part of the drain socket used for the air conditioner in the actual form 1 of this invention. It is a top view of the sealing material wound around the drain socket used for the air conditioner in the actual form 1 of this invention.

Embodiment 1 FIG.
FIG. 1 is a view showing an appearance of an air conditioner according to Embodiment 1 of the present invention. Here, a four-way cassette type air conditioner that has a ceiling-embedded type that can be embedded in the ceiling of a room and has outlets in four directions will be described.

  This air conditioner is a separation type in which an indoor unit and an outdoor unit are connected by a refrigerant pipe, and includes a refrigerant circuit that circulates refrigerant and performs air conditioning. The outdoor unit of the air conditioner has a compressor, a four-way valve, an outdoor heat exchanger and an expansion valve, and the indoor unit has an indoor heat exchanger. In this refrigerant circuit, the compressed refrigerant discharged from the compressor flows through the four-way valve to the outdoor heat exchanger for cooling and to the indoor heat exchanger for heating, and the refrigerant and air are heat-exchanged. Allow to condense and liquefy. Thereafter, when passing through the expansion valve of the expansion device, the refrigerant is decompressed and expanded, and changes to a gas-liquid two-phase state. And if it is cooling, it will flow into an indoor heat exchanger, evaporate and vaporize by exchanging heat with room air, and return to the compressor and circulate again. In the case of heating, the refrigerant that has passed through the expansion valve flows into the outdoor heat exchanger, forms a circulation circuit in which heat is exchanged with outdoor air, evaporates, and flows into the compressor again.

  The main body 1 of the indoor unit of the air conditioner is fixed to the back of the ceiling using a hanging metal fitting 5 and a bolt. A decorative panel 2 that faces the indoor side and is an exterior panel of the indoor unit is mounted below the main body (housing) 1, and a suction grill (suction port) 4 is attached to substantially the center of the decorative panel 2. ing. And there are four air outlets 3 around the suction grille, and each is provided with a wind direction adjusting vane. This indoor unit incorporates an indoor heat exchanger, a turbo fan, a drain pan, a blower motor, an indoor control device, and the like.

  The main body 1 includes a turbo fan serving as a blower, an indoor heat exchanger disposed so as to surround the turbo fan, and a drain pan for collecting drain water generated from the indoor heat exchanger. As will be described later, the drain pan is provided with a drain pump for discharging drain water accumulated in the drain pan to the outside of the apparatus. The main body 1 has a drain socket 6 fixed to the outer wall of the main body 1 as a flow path for discharging drain water by driving a drain pump.

  FIG. 2 is an enlarged view of the main part of the peripheral portion of the drain socket of the indoor unit of the air conditioner according to Embodiment 1 of the present invention. The drain socket 6 is formed of a transparent rigid PVC material integrally with the drain socket mounting portion 7, and is held by the drain socket mounting portion 7 being fixed to the main body 1 with screws of the screw fixing portion 8. The drain socket 6 is a cylindrical pipe, and is formed at a predetermined angle that is more acute than the right angle with respect to the drain socket mounting portion 7.

  A cylindrical socket heat insulating material 9 is wound around the outer periphery of the drain socket 6. The socket portion heat insulating material 9 has an end cut obliquely in advance so as to be in contact with and installed in contact with the drain socket 6 at the base side, that is, the drain socket mounting portion 7. This is because the drain socket 6 is formed at a predetermined angle that is more acute than the right angle with respect to the drain socket mounting portion 7. On the other hand, U-shaped notches 10 are provided on two opposite sides of the cylindrical shape on the opposite side of the socket heat insulating material 9 (the discharge side of the drain socket 6). That is, the other U-shaped notch 10 provided on the opposite side of the cylinder 180 ° with respect to one U-shaped notch 10 provided on the cylindrical socket heat insulating material 9 is provided. The U-shaped notch 10 having the same shape is seen so as to overlap with the opposite side through the center of the cylindrical shape from the character notch 10.

  FIG. 3 is a view showing the appearance of the drain socket 6. A drain socket in-machine connection portion 11 is provided on the opposite side of the drain socket 6 with respect to the drain socket mounting portion 7. These are integrally formed of a transparent rigid PVC material, the drain socket 6 protrudes to the outside of the main body 1, and the drain socket in-machine connection portion 11 extends to the inside of the main body 1 and is attached. And the pump connection hose connected with the drain pump mentioned later is connected to the drain socket in-machine connection part 11. FIG.

  FIG. 4 is a diagram showing a state in which the flexible pipe 12 is connected to a drain socket provided in the indoor unit of the air conditioner. From FIG. 2 described above, a flexible pipe 12 is added. In the figure, 12 is a substantially cylindrical shape, a flexible pipe that is a flexible deformable pipe, and 13 is provided at both ends of the flexible pipe 12. It is a flexible pipe connection. One of the flexible pipe connecting portions 13 is connected to the drain socket 6 and the other is connected to the external drain pipe. As shown in FIG. 4, the drain socket 6 is inserted into the inner surface side of the flexible pipe connecting portion 13, and the end portion of the flexible pipe connecting portion 13 abuts against the socket heat insulating material 9 provided on the outer periphery of the drain socket 6 to be connected. It becomes the composition which is done. Even in this state, a part of the surface of the drain socket 6 made of transparent hard PVC material can be seen from the U-shaped notch 10, so that the state inside the drain socket 6 can be visually observed through the U-shaped notch 10. It has become.

  Here, the drain pipe connection work of the indoor unit in the installation work of the air conditioner will be described. After the main body 1 of the air conditioner is fixed to the back of the ceiling using a hanging metal fitting and a bolt, a flexible pipe 12 is connected to the drain socket 6 protruding from the main body 1 as shown in FIG. When the prepared external drain pipe is continuously connected, drain water is confirmed to be discharged from the main body 1. According to this embodiment, a drain pipe 6 formed of a transparent rigid PVC material is connected to a vinyl chloride pipe (not gray but gray) used as an external drain pipe and a flexible pipe formed of vinyl chloride. Even in such a state, the drain water flowing in the transparent drain socket 6 from the two U-shaped notch portions 10 provided in the socket heat insulating material 9 can be visually confirmed. Furthermore, since two U-shaped notches 10 are provided on the diagonal surface of the cylindrical drain socket 6 at a position of 180 °, two U-shaped notches are provided even when the back of the ceiling is dark. By irradiating light from one of the portions 10, the inside of the drain socket 6 can be clearly seen, and the normal flow of the drain water can be surely confirmed.

  FIG. 5 is a view showing the assembly of the peripheral portion of the drain socket of this air conditioner, in which an outer heat insulating material 14 and a band 15 are added to FIG. The outer heat insulating material 14 is wound around the outside so as to cover from the socket heat insulating material 9 to the flexible pipe connecting portion 13 shown in FIG. 4, and fastened with a band 15 from above. The length in the connecting direction of the socket part heat insulating material 9 is set to a sufficient length including the U-shaped cutout part 10, so that a margin for fixing the band 15 to the outer heat insulating material 14 becomes large, and the external heat insulating material 14 is peeled off. This prevents opening. The installation of the heat insulating material from the outer heat insulating material 14 to the external drain pipe side is performed as usual.

FIG. 6 is an external view of a peripheral portion of the drain socket of the indoor unit of the air conditioner viewed from below, and corresponds to FIG. 2 described above.
FIG. 7 is an external view of the state in which the flexible pipe is connected to the drain socket of the indoor unit of the air conditioner as viewed from below, and corresponds to FIG. 4 described above.

  FIG. 8 is an explanatory drawing of attachment of the drain socket to the main body (housing) of the indoor unit of the air conditioner according to Embodiment 1 of the present invention. In FIG. 8, 19 is a pump connection hose connected to the drain socket 6, and is inserted and connected to a drain socket in-machine connection portion extending to the opposite side of the drain socket 6 (inside the machine 1 of the main body 1). Reference numeral 16 denotes a sealing material that seals the air exchanged heat inside the air conditioner so that it does not leak from the attachment site when the drain socket 6 is attached to the main body (housing) 1.

  The main body (housing) 1 is provided with an insertion hole 17 for installing the drain socket 6 and a screw mounting hole 18. The screw is fixed from the screw fixing portion 8 to the screw mounting hole 18 in a state where the pump connecting hose 19 connected to the drain socket 6 is passed through the insertion hole 17 and is tightly held in the insertion hole 17 by the sealing material 16.

  FIG. 9 is an explanatory view of the arrangement of the drain socket and the drain pump inside the indoor unit of the air conditioner. In the figure, reference numeral 20 denotes a drain pump installed on the inner upper portion of the drain pan 21, which is connected to a drain socket 6 protruding outside the main body 1 through a pump connection hose 19. Drain water generated from the indoor heat exchanger arranged on the upper part of the heat exchanger mounting table 22 of the drain pan 21 flows and gathers along the inner surface inclination of the drain pan 21 in the lower drain water storage section, and the drain pump 20 arranged there. Is pumped up and discharged from the drain socket 6 to the outside of the machine. The drain socket 6 is provided with a socket heat insulating material 9 to prevent the occurrence of condensation, but no heat insulating material is provided on the outer periphery of the pump connection hose 19 on the inside of the machine. Even if it occurs, it is dropped and collected by the drain pan 21.

  FIG. 10 is an enlarged view of a drain socket used in this air conditioner, (a) is an external view seen from the side, and (b) is a cross-sectional view of the sealing material 16 seen from the right side of (a). . When attached to the air conditioner main body, the drain socket 6, the socket heat insulating material 9, and the U-shaped notch 10 in the figure are located outside the main body, and the sealing material 16 and the pump connection hose 19 are located inside the main body. To position. As shown in FIG. 10B, the sealing material 19 is formed by winding a heat insulating material, and a throttle portion 23 is formed on the indoor side of the pump connection hose 19 side.

  FIG. 11 is an explanatory view of a machine-side part of a drain socket used in this air conditioner, and FIG. 12 is a plan view of a sealing material wound around the drain socket. As shown in FIG. 12, the sealing material 16 has a substantially flat shape, and one end side is a narrow winding start portion 16a, and the opposite end portion is a wide winding end portion 16c. It has the width difference part 16b used as a level | step difference. FIG. 11 shows a state where the sealing material 16 having the above-described shape is wound around the drain socket in-machine connection portion 11 corresponding to the indoor side of the drain socket 6. In accordance with the drain socket mounting portion 7 side of the drain socket in-machine connection portion 11, the sealing material 16 is wound around the drain socket in-machine connection portion from the narrow winding start portion 16a side, the width difference portion 16b, and the wide winding end. It is wound around the portion 16c. By doing so, the number of layers on the opposite side (pump connection hose side) of the sealing material 16 is reduced with respect to the number of winding layers of the sealing material on the drain socket mounting portion 7 side. The narrowed portion 23 shown in FIG. 10 is formed due to the difference in the number of windings of the sealing material.

  As shown in FIG. 8, when the drain socket 6 is attached to the main body 1, the above-described sealing member 16 is provided with the throttle portion 23 in order to insert and assemble the pump socket hose 19 into the insertion hole 17 of the main body 1. By installing it through the insertion hole 17 from the narrowed portion 23 side, the assembling work can be easily performed, and it is possible to firmly fix and fix the gap with the insertion hole 17. In addition, although the width difference part 16c of the sealing material 16 was demonstrated in one place, the same effect can be acquired even if it provides in the width of different widths in multiple places.

  DESCRIPTION OF SYMBOLS 1 Main body (casing), 2 decorative panel, 3 outlet, 4 suction grille, 5 hanging bracket, 6 drain socket, 7 drain socket mounting part, 8 screw fixing part, 9 socket heat insulating material, 10 U-shaped notch part, 11 Drain socket internal connection part, 12 Flexible pipe, 13 Flexible pipe connection part, 14 Outer heat insulating material, 15 Band, 16 Seal material, 16a Winding start part, 16b Different width part, 16c End of winding part, 17 Insertion hole, 18 Screw Attachment part, 19 Pump connection hose, 20 Drain pump, 21 Drain pan, 22 Heat exchanger mounting part, 23 Restriction part.

Claims (4)

A refrigerant circuit that circulates refrigerant by sequentially connecting a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, and a drain generated by the indoor heat exchanger on an outer wall of a main body in which the indoor heat exchanger is installed A drain socket formed of a transparent material for connecting water to an external drain pipe and draining to the outside, a cylindrical socket heat insulating material provided on the outer periphery of the drain socket, and a cylindrical end of the socket heat insulating material An air conditioner comprising: a U-shaped notch portion, wherein the drain water flowing through the drain socket from the U-shaped notch portion is visible. 2. The air conditioner according to claim 1, wherein the U-shaped notch portion is provided at two locations which are cylindrical facing surfaces of the socket portion heat insulating material. The drain socket is formed integrally with a drain socket mounting portion, and the socket heat insulating material has an inclined end shape corresponding to an angle formed by the drain socket and the drain socket mounting portion, and is attached to the drain socket mounting portion. The air conditioner according to claim 1 or 2, wherein the air conditioner is installed against the air. A drain socket mounting portion for attaching the drain socket to an insertion hole provided in the main body, and a drain socket in-machine connection portion connected to the drain socket and extending from the drain socket mounting portion, and inserted into the drain socket in-machine connection portion. The air conditioner according to any one of claims 1 to 3, further comprising a sealing material having a throttle portion formed on a side thereof.

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