JP2004045029A - Ventilation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a level of noise propagating in a room from an air conditioning air blower; and to reduce a unit installation space. <P>SOLUTION: This ventilation system has a ventilation unit part 4 arranged in a rear part of a body 1 and having a total heat exchanger 11 and exhaust air/outside air introducing fans 10 and 14 and an air conditioning unit part 5 arranged in a central part of the body 1 adjacently to the ventilation unit part 4 and having a suction chamber 8 for sucking indoor air and an air blower chamber 22 partitioned and formed by an air conditioning heat exchanger 16 on the body front side adjacently to the suction chamber 8. A body front part has a blowout chamber 7 adjacently arranged in the air conditioning unit part 5 and branching off blowout air into respective chambers. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a ceiling-embedded ventilation and air-conditioning unit capable of simultaneously performing indoor cooling and heating, ventilation using a total heat exchanger, and exhaust heat recovery.

FIG. 10 is a plan view of a conventional ventilation and air-conditioning unit disclosed in, for example, Japanese Patent Publication No. 4-40615, and FIG. 11 is a sectional view taken along line AA of FIG. A total heat exchanger room 123 including a known total heat exchanger 122 in a main body 121 of a ventilation air conditioning unit, an intake fan 125 partitioned by a first partition plate 124 to take in outside air, and exhaust to exhaust room air. An intake / exhaust blower 127 constituting the fan 126 is provided. On the side of the intake fan 125, an intake opening 129 communicating with the outside air intake 128 and the total heat exchanger chamber 123, and on the side of the exhaust fan 126, a total heat exchange through a first opening 131 of the second partition plate 130. An exhaust opening 132 that communicates with the chamber 123 is provided. The air-conditioning room 133 partitioned by the second partition plate 130 includes an air-conditioning blower 135 fixed to a motor plate 134 and a heat exchanger 136 for passing cold and hot water, and the total heat exchanger 123 and the heat The heat exchanger 136 is provided so as to be juxtaposed with the air-conditioning blower, and a supply port 137 to be supplied indoors is provided to face the heat exchanger 136. Therefore, both the air-conditioning blower 135 and the intake / exhaust blower 127 are provided close to each other with the second partition plate 130 interposed therebetween. The total heat exchanger chamber 123 has an outdoor exhaust port 138 through which indoor air is exhausted to the outside. Further, an indoor air intake 139 is provided below the air-conditioning blower 135 provided in the air-conditioning room 133, that is, facing the ceiling surface. As shown in FIG. 11, a third partition plate 142 is provided in the total heat exchanger 122 of the total heat exchanger chamber 123 so as to partition the lower chamber 140 and the upper chamber 141, and air is supplied to the lower chamber 140. An air communication port 143 and an exhaust communication port 144 are provided corresponding to the intake opening 129 and the exhaust opening 132 so as to communicate with the fan 125 and the exhaust fan 126.

In the above configuration, when air conditioning is performed while passing cold and hot water through the heat exchanger 136 and operation is started to ventilate the room, air flows into the room air inlet 139 from the room (ceiling surface), and the air conditioning After passing through the heat exchanger 136 via the 135, the air is blown again into the room from the supply port 137. On the other hand, in the ventilation, a part of the room air that has flowed in from the room air inlet 139 by the exhaust fan 126 as the exhaust air passes through the exhaust opening 132 from the first opening 131 and further passes through the exhaust communication port 144 as shown by the arrow A. As a result, the heat flows downward from one surface of the total heat exchanger 122 into the upper chamber 141, and is exhausted to the outside through the outdoor exhaust port 138. As the intake air, outdoor air flows in from the outside air intake 128 by the intake fan 125, passes through the intake fan 125, passes through the intake opening 129, the intake communication port 143, and passes through one surface of the total heat exchanger 122. 11, flows into the upper chamber 141, flows into the air-conditioning room 133 from the second opening 145 of the second partition plate 130, is sucked by the air-conditioning blower 135, and flows into the room air inlet 139. And is blown into the room from the supply port 137 through the heat exchanger 136 to be ventilated.
Japanese Patent Publication No. 4-40615 Japanese Patent Application No. 05-334600 (Japanese Patent Application Laid-Open No. 07-190415) JP 06-347052 A JP 04-158143 A JP-A-04-270851 JP-A-62-178835 Japanese Patent Application Laid-Open No. 04-064855 Japanese Patent Application Laid-Open No. H05-240644 JP-A-06-159873 JP 04-032634 A JP 05-264092 A JP-A-62-073027 JP-A-06-229606

Since the conventional ventilation air conditioning unit is configured as described above, the air conditioning blower 135 is disposed in the air conditioning room 133 above the indoor air intake 139, and the sound of the air conditioning blower 135 is transmitted through the indoor air intake 139. There is a problem that the noise level is increased by propagating indoors.

In addition, in the conventional ventilation air conditioning unit, the supply port 137, which is an outlet to the room, has a shape adapted to a rectangular duct, so that a branch chamber needs to be provided separately from the air conditioner body 1 to branch the duct. However, there is a problem that the installation space becomes large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and reduces the level of noise transmitted from a suction grill (indoor air intake) to a room, such as an air conditioning blower and a drain water pump. In addition, an object of the present invention is to provide a space-saving and highly serviceable ceiling-embedded ventilation and air-conditioning unit in which a branch chamber is integrated into an air conditioner body.

The ventilation system according to the present invention is a ventilation system that ventilates room air in each room of a house having a plurality of rooms,
A main body including a suction port for sucking room air, an exhaust fan for guiding the drawn room air to the outside, an outside air introduction fan for introducing outside air from outside, and three or more duct connection ports for branching the outside air;
A duct for connecting the three or more duct connection ports and each chamber;
The main body is installed at a predetermined place in a house, and room air is discharged from each room to a place where the main body is installed by blowing air from an outlet of a duct of each room of the plurality of rooms, and It is characterized by ventilating the indoor air of a house by sucking through the suction port.

Embodiment 1 FIG.
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes an air conditioner main body, 2 denotes a first partition plate for partitioning a ventilation unit 4 provided at a rear portion of the main body 1 and a central air conditioning unit 5, and 3 denotes an air conditioning unit 5 and the main body 1. This is a second partition plate that partitions the indoor blowout chamber section 7 provided at the front.

The ventilation unit section 4 is provided on the first partition plate 2, and is provided with an exhaust suction port 9 for exhausting room air communicating with the suction chamber 8 of the air conditioning unit section 5, and provided opposite to the exhaust suction port 9. An exhaust fan 10, an indoor air exhaust unit having a total heat exchanger 11 and an exhaust duct connection port 12 on the outlet side of the exhaust fan 10 are provided, and an outside air introduction duct connection port 15 is opposed to the outside air introduction duct connection port 15. Outside air introduction fan 14 provided at the outlet side of the outside air introduction fan 14, and configured to intersect with the exhaust air and provided to the total heat exchanger 11 and the first partition plate 2. An outside air introduction section having a fresh outside air outlet 13 communicating with the unit section 5 is provided.

As shown in FIG. 2, the suction chamber 8 located between the first partition plate 2 and the air-conditioning heat exchanger 16 in the air-conditioning unit section 5 has a suction duct 17 for sucking room air immediately below the suction chamber 8, and this suction duct 17 And a filter 19 provided in the vicinity of the back side of the suction grill 18. The air-conditioning heat exchanger 16 is tilted toward the suction chamber 8 and is attached at an angle.

On the side opposite to the suction chamber 8 of the air-conditioning heat exchanger 16 forming the suction chamber 8, there is a blower room 22, which is provided with two fans 20 and a fan motor 21 for driving the fans 20. The casing 23 and the fan fixture 24 of the fan motor 21 are fixed to the second partition plate 3. As shown in FIG. 2, a sound absorbing material 27 is appropriately affixed to the outer components surrounding the blower room 22 and the inner surface of the second partition plate 3.

An indoor blow-out chamber 7 is provided on the side of the second partition plate 3 opposite to the blower room 22, and communicates with the blow-out opening of the fan casing 23 through a square hole 41 provided in the second partition plate 3. At the end on the plate 3 side, a plurality of outlet duct connection ports 25 are provided.

吹 き As shown in FIG. 2, the outlet duct connection port 25 is disposed at substantially the same height as the discharge port of the fan casing 23. In FIG. 1, two blow duct connection ports 25 are provided opposite to the two fan casing discharge ports, and another one blow duct connection port 25 is provided at an intermediate portion between the two fan casing discharge ports. Are located.

As shown in FIG. 3, the heat insulating component in the blow-out chamber 7 is a box-shaped foam molded product whose lower surface (the ceiling side in the room) is open, has a blow-out duct connection port 25 on one side, and a fan casing on the other side. It has a square hole 41 communicating with the 23 outlet opening. When this box-shaped heat-insulating component is assembled into the main body 1, the opening is closed by another heat-insulating component 42.

As shown in FIG. 2, a drain pan 26 is provided immediately below the air-conditioning heat exchanger 16, and a drain pump 28 is provided adjacent to the blower room 22 side of the air-conditioning heat exchanger 16 to pump drain water of the drain pan 26. The pumped drain water is sent out by a drain hose 29 to a drain connection port 30 facing the outside.

As shown in FIG. 5, on the front surface of the main body in which the drain connection port 30 and the blow-out duct connection port 25 are formed, hanging brackets 31 for hanging the main body are provided at the upper portions of the left and right ends, and a plurality of circular blow-out duct connection ports are provided. 25 is disposed in contact with or close to the lower surface of the main body 1, and the drain connection port 30 is located at an upper portion appropriately spaced from the upper end of the blow-out duct connection port 25, and is located between any two adjacent blow-out duct connection ports 25. It is located at the location. Further, the refrigerant pipe connection port 40 is provided beneath one hanging fitting 31 beside the blow-out duct connection port 25.

The electrical component box 32 is attached to the first partition plate 2 inside the suction chamber 8. As shown in FIG. 6, rails 33 having guide grooves on both sides are formed on the first partition plate 2, and guide parts 34 engaging with the rails 33 are provided on the electrical component box 32. I have.

As shown in FIG. 7, an inspection port is provided on a ceiling surface facing the lower surface of the main body 1, and the inspection port includes a frame 36, a door 37 for a blower room service, a door 38 for a ventilation unit section service, and a door for a service of an intake port. It has a door 39. The shafts 36a, 36b, and 36c provided on the frame 36 and the bearings (not shown) provided on the doors 37 to 39 are rotatably fitted to the doors 37 to 39 and can be removed. The inlet service door 39 is formed integrally with the suction grill 18 and the suction duct 17. By opening the inlet service door 39, the lower surface of the suction chamber 8 is opened.

Next, the operation will be described. As shown in FIGS. 1 and 2, the indoor air is sucked from the suction grill 18 on the ceiling surface and enters the suction chamber 8 of the air conditioning unit 5 through the suction duct 17. A part of the air that has entered the suction chamber 8 is guided from the exhaust suction port 9 to the ventilation unit 4 by the exhaust fan 10, and is discharged from the exhaust duct connection port 12 through the total heat exchanger 11 to the outside. At this time, substantially the same amount of fresh outside air is guided by the outside air introduction fan 14 from the outside air introduction duct connection port 15 to the total heat exchanger 11, where fresh air exchanges heat with exhaust gas to recover exhaust heat, and then recover fresh air. The air is supplied from the outside air outlet 13 to the suction chamber 8 and mixed with the circulating air sucked from the room. In this way, part of the circulating air in the room can be replaced with fresh air and supplied to the air-conditioning heat exchanger 16 without losing heat due to the action of the ventilation unit 4.

The air in the suction chamber 8, part of which has been replaced with fresh air, is cooled or heated by a refrigerant or hot water flowing through the air-conditioning heat exchanger 16 when passing through the air-conditioning heat exchanger 16, so that the air in the blower room 22 is cooled. Led to. Since the configuration of the main body separates the suction chamber 8 and the blower room 22 with the air-conditioning heat exchanger 16, the air-conditioning heat exchanger 16 can be defeated using the space in the suction chamber 8. The air-conditioning heat exchangers 16 arranged diagonally can secure a larger heat exchanger area than when arranged vertically, and can reduce noise value and improve heat exchange performance by reducing pressure loss.

The air in the blower room 22 is blown out from the fan casing 23 by the fan 20 through the square hole 41 of the second partition plate 3 to the blow-out chamber 7, and is dispersed and supplied from the plurality of blow-out duct connection ports 25 to each room. However, the flow of the air that has flowed out of the discharge port of the fan casing 23 flows out smoothly from the duct connection port 25 that is provided to face the air flow. Further, although the flow rate of the outlet duct connection port 25 at the center is smaller than that of the outlet duct connection ports 25 at both ends, the balance of each flow rate is adjusted at the outlet port 51 with the air volume variable device at the end of the duct, which will be described later. There is no. However, the overall pressure loss is reduced and the noise value can be reduced.

騒 音 The noise generated by the fan 20 provided in the blower room 22 is shielded by the outer components surrounding the blower room 22 and is also absorbed by the sound absorbing material 27 provided on the inner surface of the blower room 22 to reduce the noise level. Part of the noise generated by the fan 20 leaks into the suction chamber 8 from the gap between the fins of the air conditioning heat exchanger 16, but a suction duct 17 exists between the effect of the sound absorbing material of the suction chamber 8 and the suction grill 18. Because of the distance, the noise that attenuates and propagates indoors is reduced.

Since the drain water pump 28, which is another noise source of the air conditioning unit 5, is disposed in the blower room 22, the noise generated by the drain water pump 28 is also transmitted to the room similarly to the case of the fan 20. The level is reduced.

Since the blowout chamber 7 is provided integrally with the main body 1, there is no need to provide a separate branch chamber, and a plurality of blowout ducts can be directly connected to the main body 1. This makes it possible to reduce the installation space.

In order to improve the heat insulation, the blow-out chamber 7 has a heat-insulating structure in which an integrated foam molded product or a plurality of foam molded products are bonded and fitted together so as not to cause air leakage. In the method of abutting materials to insulate, there is a problem that a little wind inevitably leaks and cools the metal outer component, and condenses and drops on the outside of the main body. However, dew on the outside of the main body is prevented. However, an opening serving as an air flow path penetrating the foam molded article has a gap around the opening with an outer component, so that the opening is closed with a sealing material or the like to prevent the flow of cool air.

The front surface of the main body 1 provided with the outlet duct connection port 25 secures the maximum number of duct branches in a limited space, further secures a space in which a gradient of the drain pipe can be set, and has a detachable connection at each connection port. It is necessary to be able to do this independently of other connection states.

で は As shown in FIG. 5, in the present application, the number of branches of the duct is three, and the ducts are arranged side by side at the lower portion of the front surface of the main body. And, since the drain connection port 30 is located in the upper space formed between the two adjacent blow-off duct connection ports 25, the drain pipe can be attached and detached from the space between the ducts even after the duct connection, and the drain pipe can be connected. The gradient can be easily set. In addition, since the refrigerant pipe connection port 40 is located in the lower right space of the outlet duct connection port (the right end outlet duct connection port in the example of FIG. 5), the refrigerant pipe connection port 40 can also be detached regardless of other connection states. In this way, the layout is designed to realize the minimum body unit height and unit width dimensions while ensuring the installation and serviceability that the attachment / detachment work of each connection port can be performed regardless of other connection states. .

(4) The electrical component box 32 is desirably configured so that the inside is easily visible and easy to work for wiring connection at the time of installation work, and inspection and repair of the board and the electrical component box. When the electric component box 32 is attached to the first partition plate 2 inside the suction chamber 8, if the lower surface of the suction chamber 8 is opened, inspection and repair can be performed from the room, but it is dark and difficult to see, and the ceiling is dark. It is necessary to work in the high place behind and the workability is not good. In the present invention, in order to solve this problem, the electric component box 32 attached to the first partition plate 2 inside the suction chamber 8 is provided on the first partition plate 2 as shown in FIG. The rail 33 having the guide groove and the guide part 34 of the electric component box 32 engaged with the guide groove can be moved so that the drawer can be pulled out to the lower part of the main body outside the suction chamber 8 for inspection and repair.

(4) Further, since the electric component box 32 is located in the suction chamber 8, the electric component box 32 is cooled by the circulating air and the temperature rise is suppressed.

In order to pull out the electrical component box 32 from the suction chamber 8, it is necessary to open the lower surface of the suction chamber 8, but as shown in FIG. 7, the suction duct 17 and the suction grill 18 are supported by a shaft 36c provided on the frame 36 as a fulcrum. The electrical component box 32 can be removed and removed, so that the electrical component box 32 can be moved by the drawer mechanism, thereby reducing the moving distance of the electrical component box 32 and checking the visibility of the electrical component box 32 moved to the lower part of the main body 1. Repair workability can be improved.

Embodiment 2. FIG.
An embodiment in which the ceiling-embedded ventilation air-conditioning unit shown in the first embodiment is installed behind a corridor of a house will be described with reference to FIG. The main body 1 is installed behind the ceiling of the corridor of the house, and is opened on the outer wall of the building by a duct connected to the exhaust duct connection port 12 and the outside air introduction duct connection port 15 provided in the ventilation unit 4. In addition, a plurality of ducts are connected to each chamber from a blow-out duct connection port 25 of a blow-off chamber 7 provided at a blow-out port of the air-conditioning unit 5, and a blow-out port 51 with a variable air volume device is attached to the blow-out port of each room. ing. Each room is provided with a gallery 42 for air circulation leading to the corridor, and further, a suction grill 18 provided at a lower portion of the main body 1 and a suction duct 17 connected to the main body 1 are installed on the ceiling of the corridor.

(4) The exhaust duct connection port 12 of the ventilation unit 4 is ducted to the outside, and exhausts a part of the circulating air sucked from the suction grill 18 to the outside. Further, the same amount of fresh outdoor air as the amount of exhaust air is taken in through the outside air introduction duct connection port 15, heat exchanges with the exhaust air in the total heat exchanger 11, and mixed into the conditioned air supplied to each room.

On the other hand, the conditioned air blown out from the main body 1 through the blow-out duct connection port 25 is guided to each room by the connected duct. At the ceiling of each room, the air is blown out at the air flow rate adjusting valve opening degree controlled in accordance with the setting of the user at the air outlet 51 with the air flow rate variable device. The room is air-conditioned by the blown air, but the room air flows out of a gallery 52 provided on a wall or a door at the boundary between the room and the corridor, and is sucked and circulated into the suction grill 18 at the ceiling of the corridor.

Embodiment 3 FIG.
Hereinafter, a third embodiment of the present invention will be described with reference to FIG. A suction port 55 is opened on the ceiling surface via a suction duct 17 immediately below the suction chamber 8. The suction port 55 has a slit-like shape which is eccentrically located at a proper distance from immediately below the suction chamber 8, and is formed with two sound insulation plates 53 provided directly below the suction chamber 8 on a ceiling surface. Further, a sound absorbing material 54 is attached to the entire surface of the sound insulating plate 53 facing the suction chamber 8. The suction duct 17 has a curved surface communicating with the suction chamber 8 from the two slit-shaped suction ports 55, and a filter is provided at an intermediate portion.

騒 音 The noise generated by the fan 20 in the blower room 22 reaches the suction chamber 8 while being attenuated to some extent. The noise is further radiated and reaches the lower part from the suction duct 17, but the noise is reflected and attenuated by the sound insulating plate 53 and the sound absorbing material 54, so that the noise radiated from the suction port 55 into the room is reduced, and a comfortable indoor environment is provided. Is obtained.

The ceiling-embedded ventilation air-conditioning unit of this embodiment is provided at the rear of the main body, has a total heat exchanger and a ventilation unit having an exhaust / external air introduction fan, and a central part of the main body adjacent to the ventilation unit. A suction chamber into which air in the room is sucked, and an air-conditioning unit having a blower room defined by an air-conditioning heat exchanger adjacent to the suction chamber on the front side of the main body. .

The ceiling-embedded ventilation air-conditioning unit has a configuration in which a blow-off chamber that branches blow-out air to each room is provided at the front of the main body adjacent to the air-conditioning unit.

The ceiling-embedded ventilation air-conditioning unit has a configuration in which a suction duct is provided on the lower surface of the suction chamber (on the ceiling side of the room) and a suction grill is provided at the end of the suction duct.

The ceiling-embedded ventilating air-conditioning unit has a configuration in which a drain pump is provided near the blower room side of the air-conditioning heat exchanger.

The ceiling-embedded ventilation air conditioning unit is a box-shaped integral foam molded product with an open bottom surface inside the blowout chamber, a blowout duct connection port on the front, and a hole communicating with the fan casing of the blower room on the back. And a heat insulating member.

In the ceiling-embedded ventilation air conditioning unit, the front part (blow-out side) of the blow-out chamber is provided in an upper space between a blow-out duct connection port arranged in a lateral direction near a lower end portion and an adjacent blow-out duct connection port. It is configured to include a provided drain connection port and a refrigerant pipe connection port provided in a space below the blow-out duct connection port.

The ceiling-embedded ventilation air-conditioning unit includes an electric component box attached to a first partition plate that separates the ventilation unit portion and the suction chamber from each other in the suction chamber. In the guide groove of the rail provided in the suction chamber, and can be drawn out to the lower part of the suction chamber.

The ceiling-embedded ventilation / air-conditioning unit is provided on a lower surface of a suction chamber, and includes an inlet service door integrally formed with a suction duct and a suction grill, and the inlet service door is an inspection port provided on a ceiling surface. The frame can be opened downward with the axis of the frame as a fulcrum.

The ceiling-embedded ventilation air-conditioning unit is provided on a ceiling surface facing the lower surface of the main body, and a blower room service door, a ventilation unit service door, an intake service door, and a fulcrum for opening and closing these doors. And a frame having a shaft on which an inspection shaft is formed.

The ceiling-embedded ventilation air-conditioning unit is provided with an air outlet having a variable air volume device at a connection portion of each duct connected to the air outlet duct connection port with each chamber.

The ceiling-embedded ventilation air-conditioning unit has a sound insulation plate provided on a ceiling surface directly below a suction chamber, a slit-shaped suction opening formed on the ceiling surface with the sound insulation plate interposed therebetween, and a suction surface with a curved surface from the suction opening. And a suction duct communicating with the chamber.

は In the ceiling-embedded ventilation air-conditioning unit, the air-conditioning heat exchanger is provided to be inclined toward the suction chamber.

The ceiling-mounted ventilation air conditioning unit replaces a part of the room circulating air with fresh outside air without losing heat in the ventilation unit, mixes fresh outside air with room air in a suction chamber, and then uses the air for air conditioning. It is led to the blower room via the heat exchanger.

The ceiling-embedded ventilation and air-conditioning unit branches conditioned air to each room from a blowing chamber integrated into the main body.

は In the ceiling-mounted type ventilation air conditioning unit, the indoor air is sucked from the suction grill and guided to the suction chamber through the suction duct.

は In the ceiling-mounted ventilation and air-conditioning unit, the noise of the drain pump is blocked by the air-conditioning heat exchanger.

換 気 In the ceiling-embedded ventilation and air-conditioning unit, the cool air inside the blow-out chamber does not leak and does not come into contact with the outer parts.

In the ceiling-embedded ventilation and air conditioning unit, the outlet duct connection port, drain connection port, and refrigerant pipe connection port can be operated from below (ceiling) regardless of other connection states.

換 気 In the ceiling-embedded ventilation air-conditioning unit, the electric component box is cooled by the circulating air in the suction chamber, and can be drawn out to the lower part of the suction chamber.

は In the ceiling-mounted ventilation air conditioning unit, the inlet service door is opened downward, and the lower surface of the suction chamber is opened.

The ceiling-embedded ventilation air-conditioning unit can open and close the blower room service door, the ventilation unit service door, and the air inlet service door provided at the inspection port on the ceiling to provide services for each part.

In the ceiling-embedded ventilation air conditioning unit, the air volume is set to each room by the air outlet with the air volume variable device in each room.

騒 音 In the ceiling-mounted ventilation and air conditioning unit, noise from the suction chamber is blocked by the sound insulating plate.

The ceiling-embedded ventilation air conditioning unit can increase the area of the air conditioning heat exchanger.

The ceiling-embedded ventilation air conditioning unit is provided at the rear of the main body, a ventilation unit having a total heat exchanger and an exhaust / outside air introduction fan, and is provided at a central portion of the main body adjacent to the ventilation unit, and is provided indoors. Air suction unit and an air-conditioning unit having a blower room partitioned by an air-conditioning heat exchanger on the front side of the main body adjacent to the suction chamber. The level of noise transmitted to the vehicle can be reduced.

The ceiling-mounted ventilation air conditioning unit has a configuration in which a blowout chamber for branching out blown air to each room is provided at the front of the main body and adjacent to the air conditioning unit, so that the installation space of the ventilation air conditioning unit can be reduced.

The ceiling-embedded ventilation air-conditioning unit has a configuration in which a suction duct and a suction grill are provided at the bottom of the suction chamber (on the ceiling side of the room), so that the level of noise transmitted from the air-conditioning blower to the room can be reduced. It can be further reduced.

天井 The ceiling-embedded ventilation air conditioning unit has a configuration in which a drain pump is provided near the blower room of the air conditioning heat exchanger, so that the noise of the drain pump can be isolated by the air conditioning heat exchanger.

The ceiling-embedded ventilation air conditioning unit is a box-shaped integral foam molded product with an open bottom surface inside the blowout chamber, a blowout duct connection port on the front, and a hole communicating with the fan casing of the blower room on the back. With the configuration provided with the heat insulating member, the outer components of the blowing chamber can be prevented from being exposed.

In the ceiling-embedded ventilation air conditioning unit, the front part (blow-out side) of the blow-out chamber is provided in an upper space between a blow-out duct connection port arranged in a lateral direction near a lower end portion and an adjacent blow-out duct connection port. Since the drain connection port provided and the refrigerant pipe connection port provided in the lower space of the blow-out duct connection port are configured, the height and width of the unit can be reduced while ensuring installation and serviceability. Can be minimized.

The ceiling-embedded ventilation air-conditioning unit includes an electric component box attached to a first partition plate that separates the ventilation unit portion and the suction chamber from each other in the suction chamber. The electrical component box can be easily inspected and repaired because it is configured to engage with the guide groove of the rail provided at the bottom and to be drawn out to the lower part of the suction chamber.

The ceiling-embedded ventilation / air-conditioning unit is provided on a lower surface of a suction chamber, and includes an inlet service door integrally formed with a suction duct and a suction grill, and the inlet service door is an inspection port provided on a ceiling surface. Since the structure can be opened downward with the axis of the frame as a fulcrum, the visibility of the electrical component box and the workability of inspection and repair can be improved.

The ceiling-embedded ventilation air-conditioning unit is provided on a ceiling surface facing the lower surface of the main body, and a blower room service door, a ventilation unit service door, an intake service door, and a fulcrum for opening and closing these doors. Since the inspection port having the frame having the shaft formed therein is provided, the workability of inspection and repair can be improved.

The ceiling-embedded ventilation air-conditioning unit has a configuration in which an outlet with an air volume variable device is provided at a connection portion of each duct connected to the outlet duct connection port with each chamber, so that the setting of the air volume in each chamber is reduced. it can.

The ceiling-embedded ventilation air-conditioning unit has a sound insulation plate provided on a ceiling surface directly below a suction chamber, a slit-shaped suction opening formed on the ceiling surface with the sound insulation plate interposed therebetween, and a suction surface with a curved surface from the suction opening. With the configuration including the suction duct communicating with the chamber, the level of noise transmitted from the blower room to the room can be further reduced.

天井 In the ceiling-mounted type ventilation air conditioning unit, the heat exchanger for air conditioning is provided to be inclined toward the suction chamber, so that heat exchange performance is improved and noise is reduced.

1 is a plan view of a ceiling-embedded ventilation and air conditioning unit according to Embodiment 1 of the present invention. 1 is a side view of a ceiling-embedded ventilation and air-conditioning unit according to Embodiment 1 of the present invention. 1 is a perspective view of a blow-out chamber heat insulating part of a ceiling-embedded ventilation and air-conditioning unit according to Embodiment 1 of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a principal part enlarged side view of the ceiling embedded type ventilation air conditioning unit by Example 1 of this invention. It is a principal part perspective view of the blowing side front part of the ceiling embedded type ventilation air conditioning unit by Example 1 of this invention. It is a principal part enlarged side view which shows the electric component box draw-out system of the ceiling embedded ventilation air-conditioning unit by Example 1 of this invention. 1 is a side view showing a suction grill opening and closing system of a ceiling-embedded ventilation air conditioning unit according to Embodiment 1 of the present invention. It is a perspective view showing the state where it attached to the hallway of the house of the ceiling type ventilation air-conditioning unit by Example 2 of this invention. FIG. 8 is a side view of a ceiling-embedded ventilation air conditioning unit according to Embodiment 3 of the present invention. It is a top view of the conventional ventilation air conditioning unit. It is AA sectional drawing of FIG. 10 of the conventional ventilation air-conditioning unit.

Explanation of reference numerals

1 body, 2 first partition plate, 4 ventilation unit, 5 air conditioning unit, 7 outlet chamber, 8 suction chamber, 10 exhaust fan, 11 total heat exchanger, 16 air conditioning heat exchanger, 17 intake duct, 18 Suction grille, 20 fan, 22 blower room, 25 outlet duct connection, 28 drain pump, 30 drain connection, 32 electrical box, 33 rail, 34 guide component, 36 frame, 37 blower room service door, 38 ventilation unit Service door, 39 intake service door, 40 refrigerant pipe connection port, 51 air outlet with air volume variable device, 53 sound insulation plate, 55 suction port.

Claims (3)

In a ventilation system that ventilates room air in each room of a house having a plurality of rooms,
A main body including a suction port for sucking room air, an exhaust fan for guiding the drawn room air to the outside, an outside air introduction fan for introducing outside air from outside, and three or more duct connection ports for branching the outside air;
A duct for connecting the three or more duct connection ports and each chamber;
The main body is installed at a predetermined place in a house, and room air is discharged from each room to a place where the main body is installed by blowing air from an outlet of a duct of each room of the plurality of rooms, and A ventilation system characterized by ventilating the indoor air of a house by sucking through a suction port. The main body is installed above the ceiling in the hallway of the house,
The ventilation system according to claim 1, wherein the ventilation system further includes a gallery at a boundary between the room and the corridor for allowing room air to flow from each room to the corridor. The ventilation system according to claim 1, wherein the ventilation system further includes a sound insulating plate at the suction port.

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