JPH0765768B2 - Ceiling-mounted air conditioner - Google Patents

Description

Description: [Industrial application] The present invention relates to a ceiling-mounted air conditioner having three functions of indoor heating / cooling, ventilation, and exhaust heat recovery.

[Prior Art] FIGS. 5 to 9 show a conventional ceiling-mounted air conditioner with a built-in heat exchange type ventilator, in which 1 is an indoor air intake provided on one side of a main body casing A. A port, 2 is a heat exchanger for heating and cooling the interior, 3 is an air supply blower for supplying air to the room, 4 is an indoor air outlet, 5 is a filter for indoor air, and 6 is provided in a central portion of the main body casing A. Exhaust heat recovery heat exchanger, 7 is an exhaust air blower provided on the opposite side of the air supply blower 3, 8 is an outdoor exhaust air outlet provided on the other side of the main body casing A, and 9 is provided in parallel therewith. Outside air intake,
Reference numeral 10 is an outside air filter provided at its inlet, 11 is an inspection lid for the exhaust heat recovery heat exchanger 6, 12 is an inspection lid for the indoor air filter 5 and the outside air filter 10, and 13 is the air supply / blower 3 An inspection lid of the exhaust blower 7 and an inspection lid 14 of the heating / cooling heat exchanger 2 are provided.

In the ceiling mounted air conditioner configured as described above, the indoor exhaust air flow a is sucked from the indoor suction grill 15 provided on the ceiling surface B as shown in FIGS. 7 and 8 and passes through the indoor air suction duct 16 to generate the indoor air. The air is sucked into the main body casing A from the suction port 1, is cleaned by the indoor air filter 5, passes through the exhaust heat recovery exchanger 6, and is exhausted by the exhaust blower 7 to the outdoor exhaust air outlet 8,
It is discharged to the outside through the exhaust duct 17 and the outdoor blow-out grill 18.

On the other hand, the air supply b from the outside is sucked into the main body casing A from the outside air outlet 9 through the outside suction grill 20 and the outside air suction duct 21 provided on the outer wall 19, and after being cleaned by the outside air filter 10, After heat exchange with the exhaust flow b by the heat exchanger 6 for recovering exhaust heat, it is sent to the heat exchanger 2 for heating / cooling by the air supply / blower 3 where it is heated / cooled and is blown out to the indoor air outlet. 4, Indoor air supply grill 23 through outdoor air supply duct 22
Is blown into the room from.

In addition, the applicant has already put it into practice as an air conditioner 60-21635
No. 6 / 13,223 is proposed, and it is known that the air recovered by the heat exchanger for exhaust heat recovery is further heat-exchanged and then supplied to the room.

In addition, the applicant also proposed a utility model number 59-110836 in which the heat exchanger for exhaust heat recovery was embedded in the ceiling, and the heat exchanger for exhaust heat recovery was rotated 45 ° and taken out from the ceiling surface. is doing.

In addition, as a prior application for this application, Japanese Utility Model Publication No. 62-162538 (Showa 61)
(Filed on April 2, 1988) and JP-A-63-17329 (filed on July 8, 1986).

[Problems to be Solved by the Invention] In the above-mentioned known example, the heat exchanger for exhaust heat recovery and the air supply blower and the exhaust air blower are too far apart from each other to make maintenance and inspection difficult, or to recover exhaust heat. If a heat exchanger for heating and cooling and a blower for circulating indoor air are added to the simple structure, there is a problem that more openings for maintenance and inspection are required on the ceiling surface.

Further, the above-mentioned prior application does not consider at all the point that the opening for maintenance / inspection provided on the ceiling surface is prevented from being spoiled and the appearance of the ceiling surface is impaired. Since the air conditioner has a complicated structure further including a heat exchanger for heating or cooling in addition to the heat exchanger for recovering exhaust heat, there is a problem that the number of inspection ports required on the ceiling surface must be increased.

The present invention has been made to solve such problems, and it is an object of the present invention to provide an air conditioner that facilitates maintenance and inspection of internal equipment inside the main body casing and does not require many inspection openings on the ceiling surface. To aim.

[Means for Solving Problems] A ceiling-mounted air conditioner according to the present invention is provided with an exhaust heat recovery heat exchanger for exchanging heat between indoor air and outdoor air on one side of a main body casing. An exhaust blower that allows the indoor air to pass therethrough, and a supply air blower that allows the outdoor air to pass through the heat exchanger, and heating / cooling that heats or cools part of the indoor air on the other side of the main body casing. Indoor air to the heat exchanger for heating and this heat exchanger for heating and cooling,
Equipped with a blower for indoor air circulation that blows the heat-exchanged air into the room, between the exhaust heat recovery heat exchanger and the heating / cooling heat exchanger, suctioned by the exhaust blower and the indoor air circulation blower. A space for passing the indoor air is provided, and an indoor air suction port that opens to one surface of the main body casing to guide the indoor air to the space is provided. The indoor air suction port is provided in the vicinity of the indoor air suction port. An inspection lid is provided to open and close an internal inspection window that communicates with the heat exchanger, and an inspection opening is provided on the ceiling surface facing the indoor air intake opening and the inspection cover at a position that straddles the indoor air intake opening and the inspection cover. It is a thing.

[Operation] According to the present invention, not only maintenance and inspection of the heat exchanger for exhaust heat recovery and the heat exchanger for heating and cooling in the main body casing are possible via the indoor air intake port, but also the indoor air intake port Since maintenance and inspection is possible from the nearby inspection window,
The number of inspection openings to be provided on the ceiling surface may be small.

[Embodiment] The configuration of the present invention will be specifically described below with reference to an embodiment. That is, in FIG. 1 and FIG. 2, 31 is an indoor air intake port provided in the bottom wall of the main body casing A, 32 is one side of the indoor air intake port 31 and an indoor air intake chamber 43 side as a space described later. A heat exchanger for heating / cooling the indoor circulation airflow c provided so as to be movable toward, 33 is a blower for indoor air circulation for supplying the air heat-exchanged by the heat / cooling heat exchanger 32 into the room, 34 is an indoor circulation air outlet, 35 is an indoor circulation air filter provided on the upstream side of the heating / cooling heat exchanger 32, for example, so as to be detachable from the indoor air suction port 31, and 36 is for the heating / cooling. The so-called exhaust heat recovery heat exchanger for heat exchange between the exhaust air from the room and the outside air provided facing the indoor air intake port 31 so as to be located opposite to the heat exchanger 32, 37 is Exhaust air that exhausts the air after heat exchange by the heat exchanger 36 for exhaust heat recovery Machine, 38 is an outdoor air outlet, 39 is an outside air inlet, 40 and 41 are air supply filters and exhaust filters provided on the outside air intake side of the heat exchanger 36 for exhaust heat recovery and the exhaust side of indoor air, and 42 is outside air. The indoor air suction chamber 43 provided at the center of the main casing A
It is a supply air blower that is replenished in the
Is provided on the opposite side of the exhaust blower 37 so as to sandwich. 44 is a drain pan provided at the bottom of the heating / cooling heat exchanger 32, and 45 is an internal inspection window provided beside the indoor air suction port 31 so as to be located at the bottom of the exhaust heat recovery heat exchanger 36. The inspection lid 46a of the reference numeral 45a is provided on the ceiling surface B so that the inspection lid 46 is connected to the indoor air inlet 31 by the connecting duct 55.
The inspection lid 47 is an indoor air intake grill provided on the inspection lid 46.

3 and 4 are a plan view and a side view showing a state in which the ceiling-mounted air conditioner of the embodiment is attached to the ceiling. When operated in this state, the indoor air suction grill 47 sucks air into the ceiling. The exhaust flow a from the room is passed from the indoor air intake port 31 through the connection duct 55 to the indoor air intake chamber.
Part of the exhaust gas flow sucked into the exhaust gas 43 is cleaned by the exhaust gas filter 41, and then the exhaust heat recovery heat exchanger.
The exhaust blower 37 passes through the outdoor air outlet 38, the exhaust duct 48, and the outdoor blow-out grill 50 provided on the outer wall 49 to discharge the outdoor air. Further, the outside air supply air b enters through the outside air intake grill 51 provided on the outer wall 49, passes through the outside air intake duct 52 and is sucked into the main body casing A through the outside air intake port 39, and is cleaned by the air supply filter 40 to exhaust heat. After heat exchange with the exhaust flow B by the recovery heat exchanger 36, the air is blown into the indoor air suction chamber 43 by the supply air blower 42.

On the other hand, the exhaust air flow from the room that has not been exhausted and the heat-exchanged air supply flow b have passed through the indoor circulation air filter 35 and have been heated and cooled by the heating / cooling heat exchanger 32, and then the indoor air circulation blower. An indoor outlet grill provided on the ceiling surface B through the indoor circulation air outlet 34 and the indoor air supply duct 53 by 33.
From 54, it is blown into the room as an indoor circulation air flow c.

In summary, the indoor circulation air filter 35 and the exhaust filter 41 can be taken out from this portion by using the indoor air suction port 31, and the heat exchanger 36 for recovering exhaust heat and the air supply filter 40 are inside the connection duct 55. Is attached so that it can be taken out from the internal inspection window 45a with the inspection lid 45 at the bottom of the main body opened. Further, the air supply blower 42 and the exhaust air blower 37 can be inspected from the inside of the connection duct 55 with the heat exchanger 36 for recovering exhaust heat in the middle removed, respectively, and the indoor air circulation blower.
33 is a connecting duct 55 in a state in which the heating / cooling heat exchanger 32 is moved to the indoor air suction chamber 43 side without removing it.
The inspection can be performed from the inside with the inspection lid 46 open.

[Advantages of the Invention] In the present invention, the internal equipment facing the space for communicating the indoor air provided between the heat exchanger for recovering exhaust heat and the heat exchanger for heating and cooling is supplied from a specific inspection port provided on the ceiling surface. Not only can maintenance and inspection be performed through the indoor air intake port, but internal equipment can also be maintained and inspected through the same inspection port on the ceiling surface and the inspection window near the indoor air intake port.

Therefore, there is an effect that the number of inspection openings required on the ceiling surface can be reduced to prevent the appearance of the ceiling surface from being impaired.

Also, if you remove the internal equipment (members) facing the above space,
Furthermore, there is a practical advantage that it is possible to maintain and inspect objects that are located farther from the space.

[Brief description of drawings]

FIG. 1 is a plan view showing the internal structure of a ceiling-mounted air conditioner as one embodiment of the present invention, and FIG. 2 is a side view of a main body casing cut away to show the ceiling surface and the internal structure of the device.
FIG. 3 is a plan view showing the same installation state, FIG. 4 is a side view thereof, and FIGS. 5, 6, 7, 8 and 9 show conventional examples. The figure is a plan view, FIG. 6 is a side view according to FIG. 2, FIG. 7 is a plan view according to FIG. 3, and FIG. 8 is a side view according to FIG. [Fig. 3] is a plan view showing an arrangement state of inspection ports provided on a ceiling surface. In the figure, 31 is an indoor air inlet, 32 is a heating / cooling heat exchanger, 33 is an indoor air circulation blower, 35 is an indoor circulation air filter, 36 is an exhaust heat recovery heat exchanger, and 40 is an air supply filter. , 41 is an exhaust filter, 42 is a supply air blower, 43 is an indoor air suction chamber, 45a is an internal inspection window, 46a is an inspection port, 55 is a connecting duct, A is a main casing, and B is a ceiling surface. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A heat exchanger for recovering exhaust heat for exchanging heat between indoor air and outdoor air on one side of a main body casing, an exhaust air blower for allowing indoor air to pass through the heat exchanger, and the heat exchanger as described above. A heating / cooling heat exchanger for heating or cooling a part of the indoor air is provided on the other side of the main body casing, and an indoor air is guided to the heating / cooling heat exchanger. , An indoor air circulation blower that blows the heat-exchanged air into the room, and sucks between the exhaust heat recovery heat exchanger and the heating / cooling heat exchanger by the exhaust air blower and the indoor air circulation blower. Is provided with a space through which the indoor air is passed, and an indoor air suction port that opens to one surface of the main body casing and guides the indoor air to the space is provided.
Provided in the vicinity of the indoor air intake port, an inspection lid for opening and closing an internal inspection window communicating with the exhaust heat recovery heat exchanger is provided, and on the ceiling surface where the indoor air intake port and the inspection lid face each other, A ceiling-mounted air conditioner characterized in that an inspection port is provided at a position that straddles the indoor air intake port and the inspection lid.