JP4285217B2 - Air conditioner - Google Patents

Description

  The present invention relates to a ventilator or an air conditioner having a ventilation function.

  A conventional air conditioner is composed of an indoor unit that discharges air that has been heated and cooled, and an outdoor unit that exhausts heat and cold air that are no longer needed as a result of the cooling and heating operation. The interior of the indoor unit is separated by a partition plate. The indoor air is discharged to the outside by driving a blower provided in the ventilation chamber (see, for example, Patent Document 1).

  Further, in a conventional air conditioner, a ventilation device is housed inside the indoor unit, and a grill which is a ventilation suction port of the ventilation device is configured to open to the side of the indoor unit, and is sucked from the grill. Some exhaust indoor air through a ventilator (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 11-294790 (page 3, FIG. 1-2) Japanese Patent Laid-Open No. 2001-215029 (page 4, FIG. 1-2)

In highly airtight houses with high thermal insulation and thermal efficiency that occupy most of the houses constructed in recent years, chemical substances generated from the chemical products contained in the wall materials and decorative members of the houses and the adhesive used for them are contained in the houses. There was a case where there was a concern that would be satisfied.
Further, the conventional air conditioner is a heater that dries moisture adhering to the heat exchanger of the indoor unit for the purpose of preventing mold from being left in a high humidity state during cooling. There are some which perform an internal drying operation, but there is a problem that the temperature inside the room cooled by the internal drying operation is raised to deteriorate the indoor environment and the air conditioning efficiency is also lowered. Therefore, it became necessary to exhaust indoor air containing chemical substances and exhaust heat from the internal drying operation, and an air conditioner with a ventilation function was introduced. There is a need to remove adhering moisture.

  The present invention has been made to solve such a problem. During the cooling operation in summer, the warm air of the outside air enters the indoor unit along the pipe that conducts the ventilation air, and the cooled indoor air is used. An object of the present invention is to obtain an air conditioner having a ventilation function that can be prevented from causing generation of mold and the like after being cooled and remaining condensed in the piping for ventilation air.

  In addition, the cooling air piping is cooled by the cool air from the outside during the heating operation in winter and enters the indoor unit along the piping that conducts the ventilation air. It aims at obtaining the air conditioner which has the ventilation function which can prevent becoming the generation | occurrence | production cause.

An air conditioner according to the present invention is an air conditioner that is separated into an indoor unit and an outdoor unit and is provided with a ventilation device in the indoor unit or the outdoor unit, and sucks indoor air and exhausts it outside or sucks outdoor air. an opening installed ventilation port as the ventilation air supplied to the chamber flows out entry into the indoor unit or outdoor unit by, the ventilation air in the lower part of the ventilation ducts leading to ventilation pipes ventilation air contact with the ventilation opening A dew tray having a connection port to which a ventilation pipe for guiding is connected is provided, and an inner wall surface of the ventilation duct is formed from a gap between the ventilation duct and a pipe extending from the dew plate to the inside of the ventilation duct. Condensed water adhering to the dew receiving tray flows out and is collected, and condensed water adhering to the outer wall surface of the ventilation duct is also collected by the dew receiving tray .

According to the air conditioner according to the present invention, in an air conditioner that is separated into an indoor unit and an outdoor unit and includes a ventilation device in the indoor unit or the outdoor unit, the indoor air is taken in and exhausted to the outside or the outdoor air a vent ventilation air supplied to the room is opened installed to inflow and outflow to the indoor unit or outdoor unit by suction, said ventilation at the bottom of the ventilation ducts leading to ventilation pipes ventilation air contact with the ventilation opening A dew receiving tray having a connection port to which a ventilation pipe for guiding air is connected, and the inner side of the ventilation duct from a gap between the ventilation duct and a pipe extending from the dew receiving plate to the inside of the ventilation duct Condensed water adhering to the wall flows out to the dew tray and is collected, and condensed water adhering to the outer wall surface of the ventilation duct is also collected by the dew tray, so that the inside or outside of the ventilation duct that conducts ventilation air Attached to It can be drained to collect condensation which, the effect of preventing generation of mold or the like is obtained.

Embodiment 1 FIG.
An air conditioner according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 10. FIG. 1 is an exploded perspective view showing the appearance of an indoor unit of an air conditioner, FIG. 2 is a perspective view showing a pipe connection state in the indoor unit of the air conditioner, and FIG. 3 is a perspective view showing an outdoor unit of the air conditioner. Fig. 5 is a side view of the indoor unit showing the ventilation duct, Fig. 6 is a rear view of the ventilation pipe arrangement of the indoor unit viewed from the rear, and Fig. 7 is a ventilation pipe installation of the indoor unit. FIG. 8 is an exploded explanatory view showing a method for attaching a ventilation pipe to the indoor unit, FIG. 9 is a perspective view of the ventilation pipe of the indoor unit as seen from an oblique back, and FIG. 10 is a cross-sectional view of the ventilation duct. .

  In the figure, the indoor unit 1 is connected to the outdoor unit 3 by a refrigerant pipe 23 through which a refrigerant is conducted, an electric wiring (not shown) or the like to constitute an air conditioner, and the indoor unit 1 is installed in a living space and is built in. The indoor air is cooled or warmed by passing it through the heat exchanger 15 and blown out from the outlet 14 to the room for cooling and heating, and the room air is exhausted to the outside of the room or the outside air is supplied to the room side. Do. On the other hand, the outdoor unit 3 is installed in an outdoor space, and transports a heat source from the outside air for cooling and warming indoor air to the indoor heat exchanger 15 via the refrigerant and performs a ventilation operation. 4 is attached outside or inside the outdoor unit. A ventilation pipe 24 for conveying air for ventilation is connected and installed between the ventilator 4 on the outdoor unit side and the ventilation duct 22 attached to the indoor unit 1.

  The heat exchanger 15 is formed in contact with the refrigerant pipe and a refrigerant pipe made of a metal such as copper having a meandering shape capable of exchanging a large amount of heat per volume and having high heat transfer performance. It consists of fins that can exchange heat with a large amount of air. A drain pan 16 is disposed below the heat exchanger 15, receives and collects condensed water generated and attached to the entire surface of the heat exchanger 15, and drains the drain outlet that protrudes to the outside of the indoor unit provided at the lowermost end thereof. Drain water (condensation water) is discharged to the outdoor side through a drain pipe 17 for drain water discharge connected from the outside. The air inlet 18 of the indoor unit 1 is provided with an air filter 18 that collects dust and dirt floating in the room air.

  As shown in FIG. 1, from the back side of the left end portion of the indoor unit 1, a ventilation duct 22 that forms an air conveyance path for discharging indoor air and supplying fresh outdoor air and the outdoor unit 3 connected thereto are installed. Ventilation piping 24 that connects between the ventilation devices is attached and arranged. As shown in FIG. 2, the refrigerant pipe 23 and the ventilation pipe 24 that connect the indoor unit 1 and the outdoor unit 3 to transport refrigerant and form a refrigeration cycle are drawn out from the indoor unit 1 and bundled together. Unit 2 is configured. The above-described drain pipe 17 and ventilation pipe 24 may have different pipe diameters, or one pipe cross section may be a square and the other pipe may have a round cross section and a different cross section.

  In FIG. 3, a ventilation device 4 incorporating a ventilation fan (not shown) is attached to the side of the outdoor unit 3 having at least a compressor, an outdoor heat exchanger, and an outdoor blower. The non-indoor side of the ventilation pipe 24 is connected to a connection port communicating with the suction side. The ventilation pipe 24 may be a single continuous pipe, or may have a configuration in which a plurality of ventilation pipes are connected by intermediate connection members as shown in the figure.

  4, the ventilation duct 22 is fixed to the right end of the indoor unit base 12 with a screw or the like when viewed from the back side of the indoor unit base 12. The ventilation pipe 24 is connected to the connection port at the lower end portion, and a locking for preventing the disconnection is provided by a locking portion 28 provided on the pipe side. The ventilation duct 22 is provided with a dew tray 25 above the connection port with the ventilation pipe 24 on the lower side. The dew receiving tray 25 has a dew receiving area larger than the cross-sectional area of the ventilation duct 22, and an area that can sufficiently collect even if dew condensation water generated on the outer surface of the ventilation duct 22 flows downward along the side surface of the duct. It has a shape.

  The side view of the indoor unit in FIG. 5 shows the installation position of the ventilation duct in the front-rear direction of the indoor unit. The ventilation duct 22 is attached in contact with the ventilation port 21 provided in the indoor unit base 12, and the ventilation is performed. A ventilation pipe 24 is connected and installed at the lower end of the duct 22. Below the ventilation pipe 24, a drain pipe 17 for draining the dew condensation water generated in the indoor heat exchanger from the indoor unit to the outside is arranged. Of the indoor air that has passed through the front panel 11 or the upper surface suction port 13 of the indoor unit 1, air that does not pass through the indoor heat exchanger reaches the ventilation port 21, and then passes through the ventilation duct 22 and the ventilation pipe 24. Then, it is discharged to the outside by the ventilation device. In addition, although the flow when room air is discharged | emitted from the indoor unit to the exterior centering on the ventilation duct 22 in FIG. 5 is shown by the arrow, conversely, outdoor air is passed indoors through the ventilation piping 24 with a ventilator. When supplying from the machine to the room, the air flow is in the opposite direction to the arrow in the figure.

  As a configuration for attaching the ventilation duct 22 to the indoor unit 1 shown in FIG. 5, a rear view of FIG. 6 shows an installation arrangement state of the ventilation duct and the ventilation pipe as viewed from the back of the indoor unit. A ventilation duct 22 is incorporated in a concave portion between the air passage forming portion where the indoor heat exchanger is installed and the outer wall of the indoor unit base, at the right end in the indoor unit base 12 when viewed from the back. And the ventilation pipe 24 connected thereto is configured not to protrude rearward from the indoor unit base. The ventilation pipe 24 and the drain pipe 17 extend through the pipe knockout hole 19 provided on the side surface of the indoor unit to the outside of the indoor unit. A dew tray 25 for collecting condensed water generated on the inner and outer surfaces of the ventilation duct 22 attached to the indoor unit base 12 from the back is provided in the ventilation duct 22, and the ventilation duct 22 is attached to the indoor unit base 12. In such a state, the dew receiving tray 25 is arranged so as to be positioned above and adjacent to the drain pan 16 for the back surface of the indoor unit base 12.

  In the front view of the indoor unit in FIG. 7 in which the ventilation pipe is attached, a recessed space between the air channel forming part of the indoor unit base 12 and the side wall of the indoor unit in which a blower fan is arranged on the downstream side of the indoor heat exchanger 15. Ventilation port 21 is provided in. On the left side of the heat exchanger 15 when viewed from the front of the indoor unit, there is no attachment of a structure that obstructs the flow of air, such as a connection pipe of the heat exchanger or a control device, and the ventilation port is the front panel 11 or the upper surface suction port. 13 in parallel with the heat exchanger 15 in the ventilation path that has flowed in through the air filter 18. When the ventilation port 21 is provided with a lattice 26 so as to cover the whole, it is possible to prevent a screw or the like from dropping from the indoor side of the indoor unit base 12 into the ventilation duct and to supply fresh outdoor air to the room. It is possible to prevent insects entering the room from the outside through the ventilation pipes and ventilation ducts. In the above description, the case where the ventilation port is provided in the indoor unit has been described. However, in the case where the ventilation port is provided on the outdoor unit side and the ventilation pipe is connected through the ventilation duct, the ventilation port is similarly gridded. Can prevent the entry of objects and insects into the ventilation pipe.

  In the exploded explanatory view showing the attachment method of the ventilation pipe to the indoor unit in FIG. 8, the outflow inlet of the upper part of the ventilation duct 22 from the rear surface of the indoor unit base 12 comes into contact with and overlaps the ventilation port 21 provided in the indoor unit base. Fix it to the indoor unit base with screws and screws. At the lower end of the ventilation duct 22, there is a round connection port to which the ventilation pipe 24 can be connected. By inserting the ventilation pipe 24 there and engaging with the ventilation duct 22 side by the locking portion 28, the ventilation duct 22 is prevented from coming off. Is possible. The ventilation pipe 24 connected to the ventilation duct 22 is arranged so as to be shifted in the height direction or the lateral direction so as not to overlap with the drain pipe 17 connected to the drain pan 16.

  Next, the operation will be described. When a user of the air conditioner transmits a cooling / heating operation command or a ventilation operation command to the indoor unit from a remote control device (remote controller), the air conditioner is generated by rotation of a blower fan (not shown) built in the indoor unit 1. The indoor air is taken into the indoor unit from the upper surface inlet or the front panel by the air flow, and the warmed or cooled air passing through the heat exchanger 15 is blown out from the air outlet 14 into the room. At that time, when the indoor unit 1 is instructed to perform cooling or heating operation, the indoor air from which dust floating in the air is removed by the air filter 18 provided in the indoor unit 1 is sucked into the indoor unit, and this A part of the air does not pass through the heat exchanger 15 and reaches the ventilation port 21 provided at a position parallel to the heat exchanger. Therefore, the air that has been cooled or heated through the heat exchanger 15 is not exhausted to the outside of the room, so that the efficiency of the cooling or heating operation as an air conditioner is not reduced by ventilation between the inside and outside of the room. Also, energy saving effect can be obtained in simultaneous operation of ventilation operation and air conditioning operation.

  The refrigerant pipe 23 conveys the low-temperature and low-pressure refrigerant or the high-temperature and high-pressure refrigerant generated in the outdoor unit 3 to the heat exchanger on the indoor unit 1 side. The refrigerant transported to the indoor unit side exchanges heat with indoor air in the indoor heat exchanger 15 to create cold air or warm air, and cools or heats the indoor space with the air blown from the outlet 14 of the indoor unit 1. Do. During the cooling operation, the condensed water generated and attached to the entire surface of the heat exchanger 15 is received below the heat exchanger, and is collected and stored in the drain pan 16 having a predetermined depth. Condensed water (drain water) collected in the drain pan 16 is drained from a drain port provided at the lowermost end of the drain pan through a drain pipe 17 connected to the drain pan 17 and projecting outside.

  The ventilation pipe 24 has one end of the pipe connected to the indoor unit 1 side and the other end connected to the outdoor unit 3 side, and the ventilation air is transported through the pipe. The indoor air is taken in by a ventilation duct 22 attached to the interior of the indoor unit, and is transported to the outdoor side where the ventilator is located via a ventilation pipe 24 and exhausted. Alternatively, outdoor air is taken in by the ventilation device 4 attached to the outdoor unit 3, the air is transported through the ventilation pipe 24, and fresh outdoor air is supplied indoors. The ventilation duct 22 is attached in contact with a ventilation port 21 provided in the indoor unit 1, and the ventilation air from the ventilation port 21 circulates from the room to the outside or from the outside to the room. Here, the ventilation opening 21 is provided with a lattice 26, and components and tools used during the installation work of the indoor unit are dropped into the ventilation duct from the ventilation opening 21 or during operation after installation of the indoor unit. It is possible to prevent insects and the like from entering the interior of the indoor unit through the ventilation pipe and ventilation duct and causing the air conditioner to malfunction.

  In the air conditioner configured as described above, the ventilation port 21 and the ventilation duct 22 of the indoor unit 1 are cooled by the air cooled by the heat exchanger on the indoor side during the cooling operation, and fresh air including outdoor moisture is contained therein. Is supplied to the indoor side through the ventilation pipe 24 by the ventilator, the outdoor air that contacts the surface of the ventilation port 1 or the ventilation duct 22 due to the temperature difference becomes the dew point temperature or less and is condensed on the surface of the ventilation port or the inner wall surface of the ventilation duct 22. To do. On the other hand, during the heating operation, the temperature of the ventilation port 21 and the ventilation duct 22 of the indoor unit 1 covered with warmed indoor air, and the outdoor cold fresh outdoor air supplied to the indoor side through the ventilation pipe by the ventilation device. Dew condensation occurs on the outer wall surface of the ventilation duct 22. In addition, although the dew condensation which generate | occur | produces on the surface of the ventilation duct attached to the indoor unit 1 was demonstrated, in the case of the ventilation duct connected to the ventilator 4 installed in the outdoor unit 3 side, the indoor side is air-cooled and indoor air is In the ventilation operation for discharging to the outside of the room, condensation is generated on the outer wall surface of the ventilation duct in the same manner as described above.

  Then, as shown in FIG. 9, the dew condensation water 29 generated and attached to the outer / inner wall surface of the ventilation port 21 or the ventilation duct 22 falls downward along the wall surface and is provided at the lower end of the ventilation duct. 25 is once collected. Next, it is collected in the drain pan 16 of the indoor unit 1 located below the dew tray (shown by the solid line arrow in FIG. 9) and joined to the drainage path of the condensed water (drain water) generated from the indoor heat exchanger. The water is drained from the drain pipe 17 to the outside.

  Here, as shown in FIG. 10, the dew condensation water 29 that has dropped and adhered to the inner wall surface of the ventilation duct 22 flows out from the gap 27 between the lower end of the ventilation duct 22 and the dew receiving tray 25, and thus the entire surface of the dew receiving tray 25. And a sufficient amount can be collected, collected from there to the drain pan 16 of the indoor unit 1, and discharged from the drain pipe 17 to the outside.

  As described above, since the dew tray is provided in the ventilation duct 22 connected to the ventilation device through the ventilation pipe, the condensed water generated and adhered to the surface of the ventilation duct by the ventilation operation is not leaked to the indoor unit base. All can be collected and drained to the outside of the room via the drain pan 16, and the effect of preventing the occurrence of mold and the like in the indoor unit due to condensation can be obtained.

  Further, the ventilation port 21 is located above the drain pan 16 so that it can be fully collected by the dew tray 25 similarly to the dew condensation water adhering to the inner wall surface of the ventilation duct 22 attached in contact with the ventilation port 21. The condensed water adhering to the ventilation port 21 can also be drained from the drain pan 16 to the outside of the room through the dew receiving tray 25, and generation of mold and the like can be prevented even at the ventilation port provided in the indoor unit.

It is a disassembled perspective view which shows the indoor unit external appearance of the air conditioner which concerns on Embodiment 1 of this invention. It is a perspective view which shows the piping connection state in the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention. It is a perspective view which shows the outdoor unit of the air conditioner which concerns on Embodiment 1 of this invention. It is an attachment figure of the ventilation piping related to Embodiment 1 of this invention and an indoor unit back surface. It is a side view of the indoor unit which concerns on Embodiment 1 of this invention and shows a ventilation duct. It is a back view which concerns on Embodiment 1 of this invention and shows arrangement | positioning of the ventilation piping of an indoor unit. It is a front view of the ventilation piping attachment state of an indoor unit according to Embodiment 1 of the present invention. FIG. 4 is an exploded explanatory diagram illustrating a method for attaching a ventilation pipe to an indoor unit according to the first embodiment of the present invention. 1 is a perspective view of a ventilation pipe of an indoor unit as seen from an oblique rear surface, according to Embodiment 1 of the present invention. It is related with Embodiment 1 of this invention, and is sectional drawing of a ventilation duct.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Indoor unit, 2 Piping unit, 3 Outdoor unit, 4 Ventilation device, 11 Front panel, 12 Indoor unit base, 13 Top surface inlet, 14 Air outlet, 15 Heat exchanger, 16 Drain pan, 17 Drain pipe, 18 Air filter, 19 Piping knockout hole, 21 Ventilation port, 22 Ventilation duct, 23 Refrigerant piping, 24 Ventilation piping, 25 Dew tray, 26 Lattice, 27 Gap, 28 Locking portion, 29 Condensation water.

Claims (4)

In an air conditioner that is separated into an indoor unit and an outdoor unit and is provided with a ventilation device in the indoor unit or the outdoor unit, the ventilation air that sucks indoor air and exhausts it to the outside, or sucks outdoor air and supplies it to the room. A ventilation port that is open so as to flow into and out of the indoor unit or outdoor unit, and a connection port that connects the ventilation pipe that leads the ventilation air to the lower part of the ventilation duct that abuts the ventilation port and leads the ventilation air to the ventilation pipe Condensation water adhering to the inner wall surface of the ventilation duct through the gap between the ventilation duct and the pipe extending from the dew tray to the inside of the ventilation duct is supplied to the dew tray. An air conditioner that collects condensed water that has flowed out and collected and that has adhered to the outer wall surface of the ventilation duct by the dew tray . The air conditioner according to claim 1, wherein a dew tray provided at a lower portion of the ventilation duct is disposed above a drain pan for collecting condensed water generated in a heat exchanger. The ventilation opening provided in the indoor unit is arranged in parallel with the heat exchanger in the airflow path downstream of the intake port into which room air flows, and condensate water generated in the ventilation duct during cooling operation and heating operation is generated. The air conditioner according to claim 1 or 2, wherein the air conditioner is collected by the dew tray . The air conditioner according to any one of claims 1 to 3, wherein a lattice is provided in a ventilation port installed in the indoor unit or the outdoor unit.

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