JPH08226668A - Ceiling embedded type ventilation air-conditioner - Google Patents

Abstract

PURPOSE: To reduce the level of noise to be propagated from an air conditioning blower into a room and to decrease the unit installation space. CONSTITUTION: The ceiling embedded type ventilation air-conditioner comprises a ventilating unit 4 provided at the rear of a body 1 and having an entire heat exchanger 11 and exhaust and atmosphere introducing fans 10, 14, an air conditioning unit 5 provided at the center of the body adjacent to the unit 4 and having a suction chamber 8 for sucking the air in the room and a blower chamber 22 formed to be partitioned by an air conditioning heat exchanger 16 at the body front side adjacent to the chamber 8, and an air diffusing chamber 7 provided adjacent to the unit 5 at the front part of the body to branch the diffusing air to rooms.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-embedded ventilation air conditioning unit capable of simultaneously performing indoor cooling and heating, ventilation utilizing a total heat exchanger, and exhaust heat recovery.

[0002]

2. Description of the Related Art FIG. 10 is a plan view of a conventional ventilation and air conditioning unit disclosed in, for example, Japanese Patent Publication No. 40615/1992.
1 is a sectional view taken along the line AA of FIG. A total heat exchanger chamber 123 having a known total heat exchanger 122 in a main body 121 of a ventilation air conditioning unit, an intake fan 125 that is partitioned by a first partition plate 124, and that inhales outside air, and an exhaust that exhausts indoor air. An intake / exhaust blower 127 that constitutes 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, total heat exchange from the first opening 131 of the second partition plate 130. An exhaust opening 132 communicating with the chamber 123 is provided. The air-conditioning room 133 partitioned by the second partition plate 130 is provided with an air-conditioning blower 135 fixed to the motor plate 134 and a heat exchanger 136 for passing cold / hot water, and the total heat exchanger 123 and the heat exchanger The heat exchanger 136 is provided so as to be juxtaposed with the air conditioner blower, and a supply port 137 for supplying the air to the room is provided so as to face the heat exchanger 136. Therefore, the air conditioner blower 135
Then, the intake and exhaust blowers 127 are also provided close to each other with the second partition plate 130 interposed therebetween. The total heat exchanger chamber 123 is provided with an outdoor exhaust port 138 through which indoor air is exhausted to the outside. Further, the indoor air intake 139 is provided below the air conditioner blower 135 provided in the air conditioning room 133, that is, facing the ceiling surface.
Is provided. The total heat exchanger 1 in the total heat exchanger chamber 123
22 includes a lower chamber 140 and an upper chamber 141 as shown in FIG.
A third partition plate 142 is provided so as to partition the intake air outlet 129 and the exhaust air outlet portion 1 so that the intake fan 125 and the exhaust fan 126 communicate with each other on the lower chamber 140 side.
An air communication port 143 and an exhaust gas communication port 144 provided corresponding to 32 are provided.

In the above structure, when air conditioning is performed while cold and hot water is passed through the heat exchanger 136 and operation is started to ventilate the room, air is introduced into the room air intake 139 from the room (ceiling surface). Then, it passes through the heat exchanger 136 through the air-conditioning blower 135, and is again blown into the room through the supply port 137. On the other hand, in ventilation, a part of the indoor air that has flowed in as an exhaust air from the indoor air intake port 139 by the exhaust fan 126 passes through the exhaust opening portion 132 from the first opening portion 131 as shown by an arrow A, and further passes through the exhaust communication port 144. As described above, it 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 for intake air, outdoor air flows in through the outside air intake 128 by the intake fan 125, passes through the intake fan 125, the intake opening 129, and the intake communication port 143, and the total heat exchanger 122.
11 and the upper chamber 14 as shown by an arrow B in FIG.
1, flows into the air conditioning chamber 133 through the second opening 145 of the second partition plate 130, is mixed by the indoor air that is sucked by the air conditioning blower 135 and flows through the indoor air intake 139, and passes through the heat exchanger 136. Then, the air is blown out from the supply port 137 into the room for ventilation.

[0004]

Since the conventional ventilation air conditioning unit is configured as described above, the air conditioning blower 1
35 is arranged in the air-conditioning room 133 above the indoor air intake 139, and the sound of the air-conditioning blower 135 makes the indoor air intake 13
There is a problem that the noise level is increased by being propagated through the room 9 through the room. Further, in the conventional ventilation air conditioning unit, since the supply port 137, which is a blowout port into the room, has a shape matching a rectangular duct, it is necessary to provide a branch chamber separately from the air conditioner body 1 in order to branch the duct. However, there is a problem that the installation space becomes large.

The present invention has been made in order to solve the above-mentioned problems, and is intended to reduce the noise transmitted from the intake grill (indoor air intake) to the room such as the air conditioner blower and the drain water pump. An object of the present invention is to provide a ceiling-embedded ventilation air-conditioning unit that reduces the level and has a branch chamber integrated into the air conditioner body, which is space-saving and has good serviceability.

[0006]

A ceiling-embedded ventilation air conditioning unit according to claim 1 is provided at a rear portion of a main body, and has a total heat exchanger and an exhaust air / outside air introduction fan, and a ventilation unit portion. An air-conditioning unit part which is provided adjacent to the center part of the main body and has a blower chamber partitioned by an air-conditioning heat exchanger on the front side of the main body adjacent to the suction chamber and the suction chamber. It is a prepared configuration.

A ceiling-embedded ventilation air conditioning unit according to a second aspect of the present invention is the one according to the first aspect, in which a blowout chamber for branching blown air to each chamber is provided in the front portion of the main body, adjacent to the air conditioning unit portion. It is the one.

A ceiling-embedded ventilation air conditioning unit according to a third aspect of the present invention is the one according to the first or second aspect, wherein a suction duct and a suction grill are provided at the tip of the suction chamber on the lower surface of the suction chamber (inside the ceiling of the room). It has a different configuration.

A ceiling-embedded ventilation air conditioning unit according to a fourth aspect is the one according to the first or third aspect, wherein a drain pump is provided in the vicinity of the blower room side of the air conditioning heat exchanger. .

A ceiling-embedded ventilation air conditioning unit according to a fifth aspect is the one according to the second aspect, which is a box-shaped integral foam-molded product having a lower surface opened inside a blowing chamber, and is connected to a blowing duct on the front side. The heat insulating member having a hole communicating with the fan casing of the blower chamber is provided at the mouth and the back surface.

A ceiling-embedded ventilation air conditioning unit according to a sixth aspect is the one according to the second aspect, wherein a front surface portion (blow-out side) of the blow-out chamber is laterally arranged near a lower end portion of the blow-out duct. And a drain connection port provided in an upper space between adjacent discharge duct connection ports, and a refrigerant pipe connection port provided in a space below the discharge duct connection port.

A ceiling-embedded ventilation air conditioning unit according to a seventh aspect is the one according to the second aspect, further comprising an electric component box attached to a first partition plate for partitioning the ventilation unit portion and the suction chamber in the suction chamber. The electric component box is configured such that the guide component engages with the guide groove of the rail provided on the first partition plate and can be pulled out to the lower portion of the suction chamber.

The ceiling-embedded ventilation air-conditioning unit according to claim 8 is the one according to claim 7, wherein the ceiling-mounted ventilation air-conditioning unit is provided on the lower surface of the suction chamber and is provided with an intake port service door integrally formed with the suction duct and the suction grill. The intake service door is constructed so that it can be opened downward with the axis of the inspection frame provided on the ceiling as a fulcrum.

The ceiling-embedded ventilation air-conditioning unit according to claim 9 is the one according to claim 7, which is provided on a ceiling surface facing the lower surface of the main body, and has a fan room service door, a ventilation unit part service door, An inspection port having an intake port service door and a frame having a shaft serving as a fulcrum for opening and closing these doors is provided.

A ceiling-embedded ventilation air conditioning unit according to a tenth aspect of the present invention is the air-conditioning unit according to the sixth aspect, wherein an outlet with a variable air volume device is provided at a connection portion of the duct connected to the outlet duct connection with each chamber. It is a thing.

According to an eleventh aspect of the present invention, in the ceiling-embedded ventilation air conditioning unit according to the sixth aspect, the sound insulating plate is provided on the ceiling surface directly below the suction chamber, and is formed on the ceiling surface with the sound insulating plate sandwiched therebetween. It is provided with a slit-shaped suction port and a suction duct formed by connecting the suction port with a curved surface to the suction chamber.

According to a twelfth aspect of the present invention, there is provided the ceiling-embedded ventilation air conditioning unit according to the first aspect, wherein the air-conditioning heat exchanger is inclined toward the suction chamber.

[0018]

In the ceiling-embedded ventilation air conditioning unit according to claim 1, part of the indoor circulation air is replaced with fresh outside air without losing heat in the ventilation unit, and the fresh outside air is turned into indoor air in the suction chamber. After mixing, they are introduced into the fan room via the air conditioning heat exchanger.

In the ceiling-embedded ventilation air conditioning unit according to the second aspect of the present invention, the conditioned air is branched into each chamber from the blowing chamber integrally incorporated in the main body.

In the ceiling-embedded ventilation air conditioning unit according to the third aspect, the air in the room is sucked from the suction grill and guided to the suction chamber through the suction duct.

In the ceiling-embedded ventilation air conditioning unit according to the fourth aspect, the noise of the drain pump is shielded by the heat exchanger for air conditioning.

In the ceiling-embedded ventilation air conditioning unit according to a fifth aspect of the present invention, the cold air in the blowing chamber does not leak and contact the outer parts.

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

In the ceiling-embedded ventilation air conditioning unit according to the seventh aspect, the electric component box is cooled by the circulating air in the suction chamber and can be pulled out to the lower portion of the suction chamber.

In the ceiling-embedded ventilation air conditioning unit according to the eighth aspect of the present invention, the intake port service door opens downward and the lower surface of the suction chamber is opened.

In the ceiling-embedded ventilation air-conditioning unit according to claim 9, each part can be serviced by opening the fan room service door, the ventilation unit part service door, and the intake port service door provided at the inspection opening on the ceiling surface. .

In the ceiling-embedded ventilation air conditioning unit according to a tenth aspect of the present invention, the air volume is set in each room by means of the air volume variable device-equipped air outlet in each room.

In the ceiling-embedded ventilation air conditioning unit according to claim 11, the noise from the suction chamber is shielded by the sound insulation plate.

In the ceiling-embedded ventilation air conditioning unit according to the twelfth aspect, the area of the heat exchanger for air conditioning can be increased.

[0030]

【Example】

Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 is an air conditioner main body, 2 is a first partition plate for partitioning a ventilation unit section 4 provided at a rear portion of the main body 1 and an air conditioning unit section 5 in the center, and 3 is an air conditioning unit section 5 and a main body 1. It is a 2nd partition plate which partitions off the indoor blowing chamber part 7 provided in the front part.

The ventilation unit section 4 is provided on the first partition plate 2, and has an exhaust suction port 9 for exhausting indoor air, which communicates with the suction chamber 8 of the air conditioning unit section 5, facing the exhaust suction port 9. An exhaust fan 10 is provided, and an indoor air exhaust unit having a total heat exchanger 11 and an exhaust duct connection port 12 is provided on the outlet side of the exhaust fan 10, and an outside air introduction duct connection port 15 and this outside air introduction duct connection port are provided. 15, an outside air introduction fan 14 that is provided so as to face the exhaust air outlet 15, and a total heat exchanger 11 that is provided on the outlet side of the outside air introduction fan 14 and that intersects with the exhaust air.
An outside air introducing portion having a fresh outside air outlet 13 communicating with the air conditioning unit portion 5 provided on the partition plate 2 is provided.

The suction chamber 8 located between the first partition plate 2 in the air conditioning unit 5 and the heat exchanger 16 for air conditioning.
As shown in FIG. 2, is provided immediately below the suction duct 17 for sucking indoor air, a suction grill 18 attached to the tip of the suction duct 17 (interior ceiling surface), and a back side of the suction grill 18 It has a filter 19. Then, the heat exchanger 16 for air conditioning is tilted toward the suction chamber 8 side and is attached so as to be inclined.

The blower chamber 2 is provided on the side opposite to the suction chamber 8 of the air-conditioning heat exchanger 16 forming the suction chamber 8.
2 includes two fans 20 and a fan motor 21 for driving the fans 20, and a fan casing 23 of each fan 20 and a fan fixing member 2 of the fan motor 21.
4 is fixed to the second partition plate 3. As shown in FIG. 2, a sound absorbing material 27 is appropriately attached to the outer components surrounding the blower chamber 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 chamber 22, and communicates with the blow-out opening of the fan casing 23 through the square hole 41 provided in the second partition plate 3, and the A plurality of outlet duct connection ports 25 are arranged at the end of the partition plate 2 on the side of the partition plate 3. As shown in FIG. 2, the outlet duct connection port 25 is arranged at substantially the same height as the discharge port of the fan casing 23. Further, in FIG. 1, two blowing duct connection ports 25 are provided so as to face the two fan casing discharge ports, and still another one blowing duct connection port 25 is
It is arranged in the middle of the two fan casing discharge ports. As shown in FIG. 3, the heat insulating component in the blowing chamber 7 is a box-shaped foam molded product having an opening on the lower surface (inside the ceiling of the room) and has a blowing duct connection port 25 on one side and a fan casing on the other side. It has a square hole 41 communicating with the blow-out opening 23. When the 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 directly below the air conditioning heat exchanger 16, and the air conditioning heat exchanger 1 is further provided.
A drain pump 28 for pumping up the drain water of the drain pan 26 is adjacent to the blower chamber 22 side of No. 6 and the drain water pumped up is sent to a drain connection port 30 facing the outside by a drain hose 29. As shown in FIG. 5, the main body front surface on which the drain connection port 30 and the blowing duct connection port 25 are formed is provided with hanging metal fittings 31 for suspending the main body at upper portions of both left and right ends.
Is provided, and a plurality of circular blowing duct connection ports 25 are disposed in contact with or close to the lower surface of the main body 1, and the drain connection port 3
Reference numeral 0 denotes an upper portion that is appropriately spaced from the upper end of the blowing duct connection port 25, and is arranged at an intermediate position between any two adjacent blowing duct connection ports 25. The refrigerant pipe connection port 40 is provided beside the outlet duct connection port 25 and below one of the suspension fittings 31.

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

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

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

The air in the suction chamber 8 partially replaced with fresh air is cooled or heated by the refrigerant or hot water flowing through the air conditioning heat exchanger 16 when passing through the air conditioning heat exchanger 16. It is guided to the blower room 22. Since the structure of the main body divides the suction chamber 8 and the blower chamber 22 by the air conditioning heat exchanger 16, the air conditioning heat exchanger 16 can be collapsed using the space in the suction chamber 8. The air-conditioning heat exchanger 16 arranged obliquely can secure a larger heat exchanger area than when it is arranged vertically, and it is possible to reduce the noise value and improve the heat exchange performance by reducing the pressure loss. The air in the blower room 22 is the fan 2
0 is discharged from the fan casing 23 through the square hole 41 of the second partition plate 3 into the blowing chamber 7,
Although it is distributed and supplied to each chamber from the plurality of blow-out duct connection ports 25, the flow of the air discharged from the discharge port of the fan casing 23 smoothly flows out from the duct connection ports 25 provided facing each other. Furthermore, although the flow rate of the blow-out duct connection port 25 in the central portion is smaller than that of the blow-out duct connection ports 25 at both ends, the balance of the flow rates is adjusted by the blow-out port 51 with a variable air volume device at the tip of the duct, which will be a practical problem. There is no. However, the total pressure loss is reduced and the noise value can be reduced.

The noise generated by the fan 20 provided in the blower chamber 22 is shielded by the outer components surrounding the blower chamber 22 and is absorbed by the sound absorbing material 27 provided inside the blower chamber 22 to reduce the noise level. . The noise generated by the fan 20 partially leaks to the suction chamber 8 through the gaps between the fins of the heat exchanger 16 for air conditioning, and the suction duct 17 exists between the suction chamber 8 and the suction grill 18. Since there is a large distance, the noise that is attenuated and propagates indoors is reduced.

Since the drain water pump 28, which is another noise source of the air conditioning unit 5, is installed in the blower chamber 22, the noise generated by the drain water pump 28 is also introduced into the room in the same manner as the fan 20. The propagated noise level is reduced.

Since the blowing chamber 7 is integrally provided in the main body 1, it is not necessary to separately provide a branch chamber, and a plurality of blowing ducts can be directly connected to the main body 1. This makes it possible to reduce the installation space. In addition, the blowing chamber 7 has a conventional sheet-shaped heat insulation structure by forming an integrated foam molded product or a plurality of foam molded products in combination with adhesive or fitting to improve heat insulation so as not to generate air leakage. The method of abutting the materials to insulate the material inevitably causes some wind to cool and cool the metallic outer structural component to cause dew condensation and drip outside the main body, but prevents dew condensation outside the main body. However, since an opening that serves as an air flow path that penetrates the foam-molded product has a gap with the outer component around the opening, it is closed with a sealing material or the like to prevent wraparound of cold air.

The front face of the main body 1 provided with the blow-out duct connection port 25 secures the maximum number of duct branches in a limited space, and also secures a space in which the gradient of the drain pipe can be set, and at each connection port. It is necessary to be able to attach / detach regardless of other connection states. 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 in the lower part of the front surface of the main body. Further, since the drain connection port 30 is located in the upper space formed between the two adjacent blowing duct connection ports 25, the drain pipe can be attached / detached from the space between the ducts even after the duct is connected, and the drain pipe The gradient can be set easily. Further, since the refrigerant pipe connection port 40 is located in the lower right space of the outlet duct connection port (the outlet duct connection port at the right end in the example of FIG. 5), it can be attached and detached regardless of other connection states.
In this way, the layout is such that the minimum height of the main unit and the unit width can be achieved while ensuring the installability and serviceability that the attachment / detachment work of each connection port can be performed independently of other connection states. .

It is desirable that the electrical component box 32 has a structure in which the inside is easily visible and is easy to work for wiring connection during installation work and inspection and repair of the board and the electrical component box. Electrical box 3
In the state in which 2 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 are possible from the room,
It is dark and hard to see, and the workability is poor because it requires working in high places above the ceiling. In order to solve this problem in the present invention, as shown in FIG. 6, the electrical component box 32 attached to the first partition plate 2 inside the suction chamber 8 is provided on the first partition plate 2. The rail 33 having the guide groove and the guide component 34 of the electric component box 32 engaging with the guide groove make it movable, so that it can be pulled out to the lower part of the main body outside the suction chamber 8 for inspection, repair and the like. Also,
Since the electric component box 32 is located in the suction chamber 8, it 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 and suction grill 18 are provided on frame 36 with shaft 36
Since it can be rotated around c as a fulcrum and can be removed,
With the mechanism for pulling out the electric component box 32, the moving distance of the electric component box 32 can be reduced, and the visibility of the electric component box 32 moved to the lower portion of the main body 1 and the workability of inspection and repair can be improved.

Example 2. An embodiment in which the ceiling-embedded ventilation air conditioning unit shown in Embodiment 1 is installed behind the ceiling of a corridor in 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 to 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 section 4. In addition, from the blow-out duct connection port 25 of the blow-out chamber 7 provided at the blow-out port of the air-conditioning unit 5, it is connected to each room by a plurality of ducts, and the blow-out opening 51 with a variable air volume device is attached to the blow-out opening 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 a ceiling portion of the corridor.

Exhaust duct connection port 12 of the ventilation unit section 4
Communicates with the outside through a duct and exhausts a part of the circulating air sucked from the suction grill 18 to the outside. Furthermore, the same amount of fresh outdoor air as the exhaust volume is used to connect the outdoor air introduction duct 1
The heat is exchanged 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 from the main body 1 through the blowout duct connection port 25 is guided to each room by the connected duct. At the ceiling of each room, there is an air outlet 51 with variable air volume.
Then, the air is blown out at the valve opening degree for controlling the air volume controlled according to the user's setting. Although the room is air-conditioned by this blown air, the room air flows out from the wall 52 at the boundary between the room and the corridor or the gallery 52 provided on the door, and is sucked into the suction grill 18 on the ceiling of the corridor and circulates.

Example 3. The third embodiment of the present invention will be described below with reference to FIG. A suction port 55 is provided on the ceiling surface through the suction duct 17 located immediately below the suction chamber 8.
Is open. The suction port 55 is a slit-shaped member which is unevenly distributed from just below the suction chamber 8 by an appropriate distance.
Sound insulation plate 5 provided on the ceiling surface directly below the suction chamber 8
Two pieces are formed with 3 in between. Further, a sound absorbing material 54 is attached over the entire surface of the sound insulating plate 53 facing the suction chamber 8. In addition, the suction duct 17
A curved surface communicates with the suction chamber 8 from the two slit-shaped suction ports 55, and a filter is installed in the middle portion.

The noise generated by the fan 20 in the blower chamber 22 reaches the suction chamber 8 while being attenuated to some extent. Although the noise is further radiated and reaches the lower part from the suction duct 17, the noise is reflected and attenuated by the sound insulation 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.

[0050]

The ceiling-embedded ventilation air conditioning unit according to claim 1 is provided at the rear of the main body, and has a total heat exchanger and an exhaust / outside air introduction fan, and a main body adjacent to the ventilation unit. In the configuration provided with a suction chamber in which the air in the room is sucked in, and an air conditioning unit portion having a blower chamber partitioned and formed by a heat exchanger for air conditioning on the front side of the main body adjacent to the suction chamber Therefore, the level of noise propagating from the air conditioning blower to the room can be reduced.

The ceiling-embedded ventilation air-conditioning unit according to a second aspect is the one according to the first aspect, in which a blow-out chamber for branching blown air to each chamber is provided in the front part of the main body, adjacent to the air-conditioning unit. As a result, the installation space for the ventilation and air conditioning unit can be reduced.

A ceiling-embedded ventilation air conditioning unit according to a third aspect of the present invention is the one according to the first or second aspect, wherein a suction duct and a suction grill are provided at the tip of the suction chamber on the lower surface (inside the ceiling of the room). With this configuration, it is possible to further reduce the level of noise propagating from the air conditioning blower to the room.

The ceiling-embedded ventilation air conditioning unit according to claim 4 is the one according to claim 1 or 3, wherein the drain pump is provided near the blower room side of the heat exchanger for air conditioning. The noise of the pump can be isolated by the heat exchanger for air conditioning.

A ceiling-embedded ventilation air conditioning unit according to a fifth aspect of the present invention is the one according to the second aspect, which is a box-shaped integral foam-molded product having a lower surface opened inside the blowing chamber, and is connected to the front by a blowing duct. Since the heat insulating member having the holes communicating with the fan casing of the blower chamber is provided in the mouth and the back surface, it is possible to prevent the outer shell component of the blowing chamber from being exposed.

A ceiling-embedded ventilation air conditioning unit according to a sixth aspect is the one according to the second aspect, wherein the front surface portion (blow-out side) of the blow-out chamber is a blow-out duct connection port laterally arranged near the lower end portion. And a drain connection port provided in the upper space between the adjacent blow duct connection ports, and a refrigerant pipe connection port provided in the lower space of the blow duct connection port. The height and width dimensions of the unit can be minimized while ensuring the flexibility.

The ceiling-embedded ventilation air conditioning unit according to claim 7 is the same as that according to claim 2, wherein an electric component box attached to a first partition plate for partitioning the ventilation unit portion and the suction chamber in the suction chamber is provided. Since the electrical component box is configured such that the guide component engages with the guide groove of the rail provided on the first partition plate and can be pulled out to the lower part of the suction chamber, the electrical component box can be easily inspected and repaired. It can be carried out.

The ceiling-embedded ventilation air conditioning unit according to claim 8 is the one according to claim 7, which is provided on the lower surface of the suction chamber and includes an intake port service door integrally formed with the suction duct and the suction grill. Since the intake port service door can be opened downward with the axis of the inspection port frame provided on the ceiling 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 according to claim 9 is the one according to claim 7, which is provided on the ceiling surface facing the lower surface of the main body, and has a blower room service door, a ventilation unit section service door, Since the inspection port having the intake port service door and the frame formed with the shaft serving as a fulcrum for opening and closing these doors is provided, the workability of inspection and repair can be improved.

A ceiling-embedded ventilation air conditioning unit according to a tenth aspect of the present invention is the air-conditioning unit according to the sixth aspect, in which a blowout port with an air volume varying device is provided at a connection portion of each duct connected to the blowout duct connection port. With this configuration, the air volume in each room can be set.

The ceiling-embedded ventilation air conditioning unit according to claim 11 is the one according to claim 6, wherein the sound insulating plate is provided on the ceiling surface directly below the suction chamber, and is formed on the ceiling surface with the sound insulating plate sandwiched therebetween. Since the configuration is provided with the slit-shaped suction port and the suction duct formed by connecting the suction port with the curved surface to the suction chamber, the level of noise propagating from the blower chamber to the room can be further reduced.

According to a twelfth aspect of the present invention, in the ceiling-embedded ventilation air conditioning unit according to the first aspect, since the air conditioner heat exchanger is provided so as to be inclined toward the suction chamber side, heat exchange performance is improved and noise is reduced. Is reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a ceiling-embedded ventilation air conditioning unit according to a first embodiment of the present invention.

FIG. 2 is a side view of the ceiling-embedded ventilation air conditioning unit according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a blowout chamber heat insulating component of the ceiling-embedded ventilation air conditioning unit according to Embodiment 1 of the present invention.

FIG. 4 is an enlarged side view of a main part of the ceiling-embedded ventilation air conditioning unit according to the first embodiment of the present invention.

FIG. 5 is a perspective view of a main part of a blowout side front surface portion of the ceiling-embedded ventilation air conditioning unit according to the first embodiment of the present invention.

FIG. 6 is an enlarged side view of essential parts showing a method of pulling out an electrical component box of a ceiling-embedded ventilation air conditioning unit according to Embodiment 1 of the present invention.

FIG. 7 is a side view showing a suction grill opening / closing method of the ceiling-embedded ventilation air conditioning unit according to Embodiment 1 of the present invention.

FIG. 8 is a perspective view showing a state where a ceiling-embedded ventilation air conditioning unit according to Embodiment 2 of the present invention is attached to a corridor of a house.

FIG. 9 is a side view of a ceiling-embedded ventilation air conditioning unit according to Embodiment 3 of the present invention.

FIG. 10 is a plan view of a conventional ventilation air conditioning unit.

FIG. 11 A-A of FIG. 10 of a conventional ventilation air conditioning unit
It is sectional drawing.

[Explanation of symbols]

1 main body, 2 first partition plate, 4 ventilation unit section, 5
Air conditioning unit, 7 blow-out chamber, 8 suction chamber, 10 exhaust fan, 11 total heat exchanger,
16 Air Conditioning Heat Exchanger, 17 Suction Duct, 18
Intake grill, 20 fans, 22 blower room, 25
Outlet duct connection port, 28 drain pump, 30
Drain connection port, 32 electrical equipment box, 33 rail, 34
Guide parts, 36 frames, 37 Blower room service door, 38 Ventilation unit service door, 39 Air inlet service door, 40 Refrigerant pipe connection port, 51 Air outlet with variable air volume control device, 53 Sound insulation plate, 55 Suction port.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Haruyuki Kodama Haruyuki Kodama 3-18-1, Oka, Shizuoka City Mitsubishi Electric Engineering Co., Ltd. Nagoya Office Shizuoka Branch Office (72) Inventor Hideo Harada 3--18, Oka Shizuoka No. 1 Mitsubishi Electric Engineering Co., Ltd. Nagoya Office Shizuoka Branch

Claims (12)

[Claims] 1. A ventilation unit provided at a rear portion of a main body, the ventilation unit having a total heat exchanger and an exhaust / outside air introduction fan, and a central portion of the main body adjacent to the ventilation unit.
A ceiling-embedded ventilation air conditioning system including: a suction chamber into which indoor air is sucked; and an air conditioning unit portion adjacent to the suction chamber and having a blower chamber defined by an air conditioning heat exchanger on the front side of the main body. unit. 2. The front of the main body is adjacent to the air conditioning unit,
The ceiling-embedded ventilation air conditioning unit according to claim 1, further comprising a blowing chamber for branching blown air to each chamber. 3. The ceiling-embedded ventilation air conditioning unit according to claim 1, wherein a suction duct and a suction grill are provided at the tip of the suction chamber on the lower surface (inside the ceiling of the room). 4. The ceiling-embedded ventilation air conditioning unit according to claim 1, wherein a drain pump is provided in the vicinity of the blower room side of the air conditioning heat exchanger. 5. A heat insulating member, which is a box-shaped integral foam-molded product with an open lower surface, has a blow-out duct connection port on the front side and a hole communicating with a fan casing of a blower chamber on the back side inside the blow-out chamber. The ceiling-embedded ventilation air conditioning unit according to claim 2, wherein 6. A front portion (blow-out side) of the blow-out chamber has a blow-out duct connection port laterally arranged near the lower end and a drain provided in an upper space between adjacent blow-out duct connection ports. The ceiling-embedded ventilation air conditioning unit according to claim 2, further comprising a connection port and a refrigerant pipe connection port provided in a space below the outlet port of the blow-out duct. 7. An electric component box attached to a ventilation unit section and a first partition plate for partitioning the suction chamber in the suction chamber, wherein the electric component box has a guide part for the first partition plate. The ceiling-embedded ventilation / air conditioning unit according to claim 1, wherein the ceiling-embedded ventilation / air conditioning unit is engageable with a guide groove of a rail provided in the suction chamber and can be pulled out to a lower portion of the suction chamber. 8. Provided on the lower surface of the suction chamber,
An intake port service door integrally formed with a suction duct and a suction grille is provided, and the intake port service door can be opened downward with a shaft of an inspection port frame provided on a ceiling surface as a fulcrum. The ceiling-embedded ventilation air conditioning unit according to claim 7. 9. A ceiling surface provided opposite to a lower surface of the main body,
An inspection port having a blower room service door, a ventilation unit service door, an intake port service door, and a frame on which a shaft serving as a fulcrum for opening and closing these doors is formed is provided. The ceiling-embedded ventilation air conditioning unit according to claim 1. 10. The ceiling-embedded ventilation air conditioning unit according to claim 6, wherein a blowout port with a variable air volume device is provided at a connecting portion of each duct connected to the blowout duct connection port with each chamber. 11. A sound insulating plate provided on a ceiling surface directly below the suction chamber, a slit-shaped suction port formed on the ceiling surface with the sound insulating plate sandwiched therebetween, and a curved surface communicating from the suction port to the suction chamber. 7. The ceiling-embedded ventilation air conditioning unit according to claim 6, further comprising: 12. The ceiling-embedded ventilation air conditioning unit according to claim 1, wherein the heat exchanger for air conditioning is provided so as to be inclined toward the suction chamber.