JP2000274733A - Air conditioning device for multiple dwelling house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an air conditioning space which saves energy and does not generate variations in temperature at low initial cost in an air conditioning device that is used for a multiple dwelling house. SOLUTION: An air conditioning device for a multiple dwelling house with small difference between the temperatures of the skeleton of a building and air conditioning air without the ducts that have small heat conveyance loss can be obtained by being provided with an air conditioner 1 that air-conditions the house with a plurality of rooms, and by having the first room A that is air-conditioned by the conditioned air diffused from the air conditioner 1, and a single or a plurality of the second rooms B, E, and F that are air-conditioned by being incorporated in that air conditioning return passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner used mainly for apartment buildings such as condominiums and the configuration of an air passage around the air conditioner.

[0002]

2. Description of the Related Art Air conditioning for ordinary households is often performed by a separate type air conditioner.

That is, an outdoor unit is installed near a veranda or a passage on the entrance side, an indoor unit is installed on a wall or a ceiling of a room to be air-conditioned, and the indoor and outdoor units are connected by a refrigerant pipe. .

[0004] The indoor unit houses a fan and a heat exchanger, and has an inlet from the front to the upper surface and an outlet from the lower to the lower surface in many cases.

[0005] Air-conditioning of the room is performed by inhaling room air from the suction port, blowing out conditioned air exchanged by the heat exchanger into the room from the air outlet, and repeating the indoor circulation.

When a plurality of rooms are to be air-conditioned, an indoor unit is installed in each room, and a refrigerant pipe is provided between the indoor unit and the outdoor unit.

In an example using a duct, an indoor unit is installed in a space above a ceiling in a corridor close to an entrance.

A heat exchanger and a fan are housed in the indoor unit. The ceiling of the corridor has an inlet for a decorative panel with a built-in filter, and the interior of the ceiling has an indoor unit outlet connected to a duct. I have more than one.

An outlet to the room is provided at the ceiling of each room, and the room is connected to a duct from an indoor unit behind the ceiling, and an opening such as an undercut or a gallery is provided at the door of each room. Provided.

With the above construction, the air-conditioned air exchanged by the indoor unit is blown out from the indoor unit outlet through the duct to each room from the outlet, and the return air that has air-conditioned the room is provided in the gallery or undercut of the door. The air is returned to the indoor unit through the corridor through the corridor, and by repeating this, the entire air conditioning is performed.

As a proposal of an air conditioner in which the number of ducts used is further reduced, there is JP-A-10-78244.

In this method, an air-conditioning indoor unit is installed above or below a ceiling of a common space, air-conditioned air is blown from the air-conditioning indoor unit to a common space such as a corridor, and air is ventilated to each room from an undercut of a door of each room or a gallery. Then, through the return port provided in the ceiling or descending ceiling of each room,
The air-conditioning is performed by returning the conditioned air to the space above the ceiling and returning the air to the suction port of the indoor unit opened in the space above the ceiling.

In the above-mentioned Japanese Patent Application Laid-Open No. H10-78244, a second air outlet is provided in an indoor unit in a specific room having a large air-conditioning load, and air is supplied to the specific room through a duct. It has also been proposed to perform air conditioning by returning to the indoor unit through the provided return port and the space above the ceiling.

Japanese Patent Application Laid-Open No. HEI 9-178215 proposes a proposal in which the space above the ceiling is used as an air supply duct for air conditioning air, and air conditioning air with priority on dehumidification is taken into the room by a fan provided on the ceiling to perform air conditioning. is there.

[0015]

According to a questionnaire survey, the rate of air conditioning of all rooms in an apartment house or the like is surprisingly low, and a room that is the center of life (usually a living and dining room, hereinafter referred to as LD). There are many cases where one air conditioner is installed in a room and other rooms are patient without air conditioning.

In such a case, it is difficult for a room separated from the LD through a corridor or the like to benefit from air conditioning even if the door is opened.

The air conditioner is operated only in the morning and evening hours, and is stopped during the other hours, and the windows are opened and the patient is often patient with ventilation.

Especially in the nighttime when the windows must be closed for security, in a room without an air conditioner, the limit of patience is often exceeded due to the high humidity and the exhaust heat of daily life peculiar to Japan.

Further, there has been a problem that the entire air conditioning using a normal air conditioner is expensive for both initial and running.

Although there is an example of a whole air conditioner using a duct instead of the above-mentioned ordinary air conditioner, there are too many initial costs for duct piping design and construction, and especially in the case of an apartment house, there is no room above the ceiling. The fact is that it has not been generalized because it is difficult to secure a space for duct piping.

Japanese Patent Application Laid-Open No. H10-78244, which shows an example of an air conditioner in which the number of ducts used is reduced, proposes that a special duct such as an LD be supplied with a special duct to supply a large load. However, if you try to keep the temperature of the LD with a large load in a comfortable range without using a dedicated duct, keep the temperature of the common space (corridor and entrance) at an excessively high temperature (supercooling in summer, overheating in winter). There is a problem that the necessity arises, and the corridor and the entrance are heated to the temperature of the uncomfortable area, and energy tends to be wasted.

Japanese Patent Application Laid-Open No. HEI 9-178215 proposes an example of another system in which the space above the ceiling is used as an air supply path for air-conditioned air. There was a problem that the temperature of the contacting concrete slab was greatly affected before the air was blown into the living room through the back space.

This is because the temperature of the concrete slab is almost 30 ° C. in summer, and as the length of the air supply path becomes longer, the temperature of the conditioned air also approaches 30 ° C. without taking into account the rise. In order to keep the blowing temperature low, the running cost increases.

The characteristics of the condominium will be specifically described below using an example of a condominium with a currently most standard frontage of 6 m, a depth of 12 m, and a size of 72 m ² .

In general, the ceiling, floor, and dwelling units are surrounded by a concrete slab having a thickness of about 20 cm in two directions, and the remaining two directions are provided with an entrance on one surface and a veranda on the opposite side. ing. The solar radiation in summer is devised so as to block to some extent on the veranda.

The height of the floor is generally about 2.7 m, and the living room (LD) is not provided with a ceiling, but the hallway and the entrance are provided with a ceiling. It is common to install such as.

According to the survey, recent apartment houses have high airtightness due to improvement in sash performance and the like, and the number of natural ventilation times is 0.5.
It is said to be twice / hour or less. On the other hand, the thermal conductivity of concrete is 1.4 to 1.5 (W / mK), which is about 7 times as large as 0.19 which is the thermal conductivity of plywood.

Also, four residents have a monthly power consumption of 300 kWh (about 23,000 yen / kWh, about 7,000 yen /
Monday), the average daily household waste heat is about 500 kcal
/ H is assumed.

The heat capacity (kal / ° C.) of the concrete slab surrounding one dwelling unit is 20,000 or more, but the heat capacity of air in one dwelling unit is only 60. These relationships and grounds are shown below (Table 1) and calculation formulas.

[0030]

[Table 1]

Calculation formula Weight of concrete slab: [0.2 × 6 × 12 × 2 +
0.2 × 2.7 × 12 × 2] × 2400 ≒ 100,000
kg Heat capacity of concrete slab… 100,000 × 0.19
= 19,000 kcal / ° C If the heat capacity of the concrete on the entrance side and veranda side is added to the above value, it exceeds 20,000 kcal / ° C.

Weight of air: 6 × 12 × 2.7 × 1.3 = 250 kg Heat capacity of air: 250 × 0.24 ≒ 60 kcal / ° C. As is clear from the above results, air conditioning with a large difference in temperature between concrete and temperature. An air conditioner that handles air also changes the concrete temperature, requiring a large amount of heat energy.

Turning off the air conditioner and opening the window wastes a large amount of heat stored in the concrete.

On the other hand, a simplified calculation method of heat load for cooling and heating, HASS
The standard load during cooling of an apartment house according to 112-1993 [Air Conditioning, Sanitary Engineering Standards] is 90 kcal / m ² ·
h.

That is, for a 72 m ² apartment, 90
× 72 = 6,480 kcal / h ≒ 7.5 kW / h, which is a result that approximately four air conditioners with a 2 kW / h output are required.

In a standard apartment house in a state of non-living (without living waste heat) in summer, the change in indoor temperature per day with the windows and curtains closed is measured. Only 5%. Daily changes in the presence or absence of sunshine and the outside temperature are averaged in the surrounding concrete with a large heat capacity, and hardly appear in the room temperature change.

This means that the temperature of the concrete constituting the building building is affected by the slow changes in the amount of heat integrated over about one to ten days of the sunshine and the outside air temperature, and the living waste heat of the whole building is affected. It is considered that the balance will be changed with the balance of the air conditioning heat and heat dissipation.

In the case of Tokyo, the concrete temperature fluctuates around 30 ° C. in the summer and around 14 ° C. in the winter, and this temperature mainly controls the room temperature during non-air-conditioning. Although the concrete temperature has a difference of about 1 ° C between the south side and the north side, there is almost no difference between daytime and nighttime.

The conventional home air conditioner is designed on the premise that the air conditioner is operated and stopped several times in one day, so that the starting characteristics at the start of operation are emphasized in the room. It has a great ability for its size. The capacity is determined by the value obtained by multiplying the enthalpy difference between the blowing air volume, the suction temperature, and the blowing temperature.

When the air volume is increased, there is a limit due to noise and unpleasantness due to the wind speed. In the case of cooling, the blowing temperature is lowered to increase the capacity (in the case of heating, the reverse is applied).

FIG. 15 shows a comparison between the intake temperature, the blow-out temperature and the concrete slab temperature during cooling using a conventional air conditioner in which the room temperature is set at 26 ° C.

According to FIG. 15, the blowing temperature has a temperature difference of about 15 ° C. with respect to the concrete slab temperature.

FIG. 16 shows the suction temperature at the time of heating using the conventional air conditioner when the room temperature is set at 24 ° C.
This is a comparative expression of the blowing temperature and the concrete slab temperature.

According to FIG. 16, the blowing temperature has a temperature difference of about 30 ° C. with respect to the concrete slab temperature.

These facts show that there are conditions under which a concrete slab having a large heat capacity and a large thermal conductivity can absorb a large amount of heat.

That is, when all the rooms are air-conditioned, there is blown air having a large temperature difference from the temperature of the building body in each room.

High-temperature air has a property of being located in the upper layer because the density is low and light, and low-temperature air has a property of being located in the lower layer because the density is high and heavy. Needless to say, the temperature difference is large with respect to the set room temperature. When an air conditioner having a blowing temperature is used, it is easy to generate upper and lower temperature unevenness.

It is generally said that prolonged exposure of the temperature of the feet to a temperature lower than the temperature of the head for a long period of time is also a cause of illness.

The above-mentioned problems can be summarized as follows. Having a very large heat capacity and having blown air having a large temperature difference from the temperature of the body of a building having a large thermal conductivity,
In the case of an air conditioning system in which the air blown from the air often comes into contact with the building's core, the proportion of the air conditioning energy absorbed by the building's core is greater than the air conditioning energy required to control the temperature of the living room. I had the problem of getting up. Conventional home air conditioners designed on the assumption that they are operated and stopped several times in one day have a weight of about 15 ° C. for cooling and about 4 ° C. for heating in consideration of startup characteristics.
It blows out conditioned air at a temperature of 5 ° C., and has the property of easily causing upper and lower temperature unevenness that occurs in a room. In particular, they had problems such as physical illness due to long-term use by the elderly and the sick. When air conditioning is to be performed in all rooms, an indoor unit is placed in each room, and a separate air conditioner that requires refrigerant piping between the outdoor unit and the like, and one air conditioner indoor unit is installed in the dwelling unit for heat insulation. A duct-type air conditioner that supplies air-conditioned air to each room by a duct has a problem that the cost for the device and installation is expensive and a problem that it is difficult to secure a duct space. In order to equalize the air conditioning level of the living room, etc., which is the center of life, and the bedroom, which is a sub-living room, the initial and running costs are increased, and as a result, all rooms are abandoned and only one room is air-conditioned. In addition, there is a problem in that comfort is impaired by persevering in an ON-OFF driving pattern.

[0050]

Means for Solving the Problems One means of the air conditioner of the present invention for solving the above problems is a first room which is air-conditioned by conditioned air blown out of an air-conditioning indoor unit and its air-conditioning return. It has one or more second rooms that are built into the road and are air-conditioned.

According to the present invention, by means of the above-mentioned means, in the air-conditioning circulation cycle from the air-conditioning indoor unit blowing out from the air-conditioning indoor unit to air-conditioning the room and returning to the air-conditioning indoor unit, the temperature of the building pivot and the highest temperature Air blown from the air conditioner indoor unit having a large difference is mixed with room air in the first room, and return air sent from the first room to the second room consumes a certain amount of energy in the first room, There is no uniform airflow in the second room, so there is no airflow with a large temperature difference from the building core, which is absorbed by the building core and causes a large sensible heat loss. The load can be greatly reduced.

In addition, since air near room temperature flows into the second room, there is no occurrence of temperature unevenness, which is a cause of illness during long-term use. In the second room, an air-conditioning level corresponding to the actual living situation according to the first room can be obtained without installing an air conditioner.

Another means is to blow air-conditioned air from the air-conditioning indoor unit installed in the space above the ceiling into the first room in claim 1, and to return the return air through an opening or a corridor provided in a door or wall. The second room is electrically connected to the second room to be air-conditioned.

According to the present invention, a corridor exists on the intermediate return path from the first room to the second room by the above means, and the second room is connected to the air-conditioning indoor unit through an opening in the ceiling. Even if the space above the ceiling is used as the final return path, there is no airflow with a large temperature difference from the building core in these parts.

Therefore, an inexpensive air conditioner with a small heat loss is provided by combining an opening provided in a door, wall or ceiling with a corridor or a space behind a ceiling without using expensive and difficult means for securing an installation space such as an insulating duct. A circuit can be configured.

Another means is that the air conditioner indoor unit has a circulating air flow passing through the heat exchanger and a circulating air flow bypassing the heat exchanger, and mixes and blows them.

According to the present invention, by the above-described means, the temperature of the circulating air flowing through the heat exchanger having the largest air conditioning energy and having the largest temperature difference from the building central temperature and the temperature closest to the central temperature are determined. The circulating air flow bypassing the heat exchanger is premixed in the air-conditioning indoor unit and blown out to the first room to reduce the difference between the building body and the blowout temperature in the first room. By suppressing the factors that cause sensible heat loss when absorbed by the body, the air conditioning load can be reduced.

Further, since the temperature of the blow-off temperature has a small difference from the room temperature of the first room, the occurrence of temperature unevenness in the first room can be suppressed, and the problem that the physical condition is deteriorated due to prolonged use can be solved.

Another means is the air conditioner of the first means, in addition to the final return path for returning to the air-conditioning indoor unit from the second room which is incorporated in the return path and is air-conditioned. A second final return path is provided by a return port that can be opened and closed from the intermediate return path existing between the first room and the second room to the air-conditioning indoor unit. By keeping the air resistance sufficiently small, it is possible to short-circuit the air-conditioned air flow to the second room in the open state and return to the air-conditioned indoor unit on the second final return path.
The air conditioning in the room can be restricted. By opening and closing, it is possible to selectively use the partial air conditioning and the whole air conditioning in the center of the first room.

[0060]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention includes an air-conditioning indoor unit for air-conditioning a house having a plurality of rooms, and is air-conditioned by conditioned air blown from the air-conditioning indoor unit. It has a first room and a single or a plurality of second rooms that are incorporated in the air conditioning return path and are air-conditioned, and are blown out from an air-conditioning indoor unit to air-condition the room. In the air-conditioning circulation cycle before returning to the air-conditioning indoor unit, the air blown from the air-conditioning indoor unit having the largest temperature difference from the temperature of the building core is mixed with the room air in the first room, The return air sent from the room to the second room consumes a certain amount of energy in the first room, resulting in a uniform temperature, so that the second room is absorbed by the building body and has a large sensible heat Building Axis and Large Factors That Cause Loss A temperature difference with the air flow does not exist, an effect that greatly reduce the load of the air conditioner.

According to a second aspect of the present invention, air-conditioned air is blown from an air-conditioned indoor unit installed in a space above a ceiling to a first room, and the return air is blown through an opening or a corridor provided in a door or a wall. And air-conditioning the second room by using doors, walls and ceilings in the corridor and the space above the ceiling without using expensive and difficult to secure installation space such as heat-insulating ducts. By combining the openings provided in the sections, an inexpensive air conditioning circuit with less heat loss can be configured.

According to a third aspect of the present invention, in addition to the first aspect, the air-conditioning indoor unit has a circulating air flow passing through the heat exchanger and a circulating air flow bypassing the heat exchanger, and mixes and blows these. The difference between the temperature of the building body and the blowing temperature in the first room is reduced by mixing in advance and blowing out to the first room, and the sensible heat is absorbed by the building body. It has the effect of reducing the air-conditioning load by suppressing the loss factor.

The invention according to claim 4 is characterized in that, in addition to the temperature and humidity of the intake air of the air-conditioning indoor unit, the temperature of the sensor installed in the first room air-conditioned by the air-conditioning air blown out of the air-conditioning indoor unit. The present invention is characterized in that humidity is detected and controlled, and has an effect of preventing a time delay that tends to occur due to control based on the temperature and humidity of the intake air.

According to a fifth aspect of the present invention, there is provided an air conditioner for a Japanese-style room corresponding to a second room which is separated by a brass and adjacent to a first room which is air-conditioned by conditioned air blown from an air-conditioning indoor unit. In the air supply port with a fan provided on the wall and the gap between the bran or the opening provided on the wall,
The air conditioning of the first room is circulated to the second room for air conditioning, and a return duct to the air conditioning indoor unit is installed, or a corridor where the air conditioning indoor unit is installed. Saving costs such as installing a return ceiling by installing a descending ceiling that communicates with the space above the ceiling,
This has the effect of obtaining an air conditioning level equivalent to that of the first room.

According to the present invention, in addition to the final return path which is returned to the air-conditioning indoor unit from the second room which is incorporated in the return path and is air-conditioned, the first room and the second room are connected to each other.
Characterized in that a second final return path is provided by a return port that can be opened and closed from the intermediate return path existing in the middle of the room to the air-conditioning indoor unit, and the air resistance of the second final return path is sufficiently reduced. By keeping it open, the air-conditioning airflow to the second room is short-circuited in the open state,
It is possible to return to the air-conditioning indoor unit on the second final return path, and there is an effect that the air conditioning of the second room is restricted to selectively use the partial air conditioning and the entire air conditioning in the center of the first room. .

According to a seventh aspect of the present invention, in addition to the third aspect, a damper is provided in an air flow path bypassing the heat exchanger.
The opening degree of the damper is controlled by the temperature and humidity of the intake air of the air-conditioning indoor unit or by the temperature and humidity detected by the sensor installed in the first room. It is possible to effectively control the blow-out temperature in response to a change in the load at the time of stability or the like, and output relatively large air-conditioning energy at the time of rising, so that even if some temperature unevenness occurs in the first room. It has the effect of automatically obtaining air-conditioning with little temperature unevenness and energy saving at a blowing temperature with a small temperature difference if stability is obtained for a short period of time due to the rapid start-up of air-conditioning and stable.

[0067]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) An embodiment of the present invention for an apartment house will be described below with reference to the accompanying drawings.

First, FIG. 1 shows a plan view and FIG. 2 shows a sectional view as an example of the configuration of an apartment house.

A passage K is provided on the west or north side of the building, and a veranda L is provided on the opposite east or south side, and the dwelling unit has a surface other than the surface on which the veranda L is provided and the surface on the side of the passage where the entrance V is provided. The wall surface between the ceiling surface, the floor surface and the adjacent surface is surrounded by a concrete slab S having a thickness of about 20 cm.

A corner or the like is provided with a structural pivot T such as a pillar to maintain the overall strength.

[0071] Further, the surface of the aisle with the surface and entrance V with veranda L is provided a window X and the window X _1, have become structure friendly lighting and ventilation. This window X, aluminum sash is adopted in the framework of the X _1, so that the high airtightness can be maintained once the Shimere.

Concrete slabs S are placed on the top, bottom, left and right of the window.
There exist partially, the veranda L and passages K concrete slab S ₁ waist wall is provided in excess of 1m for safety of residents, excessive solar radiation plays a role that does not affect the room environment .

[0073] On the other hand, opened the entrance door V ₁ which faces the passage K hall I, entrance enclosure Q (aka cupboard), there is corridor H, room corresponding to the second chamber on either side of the corridor H Rooms E and F (Western rooms) are arranged, and at the end of the corridor, rooms A (commonly called LD) and second
Room B (Japanese-style room) partitioned by brass W corresponding to the room of
Are juxtaposed.

Further, a kitchen C, a bath / toilet D, a storeroom G, a closet J and the like are arranged between the rooms A and B and the rooms E and F.

In such an apartment house, the ceiling of the corridor H, the entrance hall I, and some or all of the rooms E and F are set lower than those of the rooms A and B, and the space M above the ceiling is increased. A ventilation duct such as a bath / toilet D and a ventilation duct (not shown) of a range hood provided in the kitchen C are communicated with the passage K.

In the above indoor configuration, the space above the ceiling M
An air-conditioning indoor unit 1 is arranged in the upper part of the corridor inside, and a blow-out part 2 to the room A corresponding to the first room and a suction opening 3 opened to the space M above the ceiling are provided at a position opposed thereto. . The space M above the ceiling is air-tightly partitioned, and a final return for conducting return air from the return port 4 provided on the ceiling of the rooms E and F corresponding to the second room to the suction port 3 of the air conditioning indoor unit 1. Used as a road.

The window X ₁ on the side of the entrance V is formed in a bay window structure, and an outdoor unit yard for an air conditioner is formed thereunder. The window X ₁ is arranged in an outdoor unit yard provided under _one of the windows X ₁ . A refrigerant pipe (not shown) is connected between the outdoor unit for air conditioning 5 and the indoor unit 1 for air conditioning, so that a refrigeration cycle operation can be performed. And is blown out to the room A corresponding to the first room.

The blown air having a large temperature difference from the temperature of the concrete panel S, which is the building body, is mixed with the room air in the room A, consumes a certain amount of energy, and has a temperature close to the set temperature of the room A. Exit the corridor H through the opening 6 below the entrance door V.

Further, the rooms E and F are guided to the rooms E and F through the lower opening 6 of the entrance door V of the rooms E and F, and the air conditioning of the rooms E and F corresponding to the second room is performed from the first room A to the corridors H, Suction port 3 of air-conditioning indoor unit 1 passing through space M above the ceiling
It is installed in the air-conditioning return path leading to.

The temperature of the conditioned air flowing out of the room A to the corridor H is equalized and approaches the temperature of the concrete slab S.
The room temperature of the rooms E and F and the return air temperature in the space above the ceiling M further approach the temperature of the concrete slab S, and further reduce the amount of heat absorbed by the concrete slab S.

Since the exhaust heat of living in the corridor H and the rooms E and F is small, the air-conditioning load in this part is greatly reduced.
The temperature difference between rooms E and F with respect to room A can be suppressed to about + 2 ° C during cooling and about -4 ° C during heating, and the comfort is greatly improved compared to non-air-conditioning without installing an air conditioner in these rooms. Sex can be maintained.

In the case of cooling, conditioned air having substantially the same absolute humidity as the room A is led to the rooms E and F. When the temperature of the rooms E and F rises by 2 ° C. compared to the room A, the relative humidity becomes 7
%, Sufficient comfort is maintained, and there is no cause of temperature unevenness in the corridors and the rooms E and F, and a living environment that does not deteriorate even after long use is created.

FIG. 3 explains the undercut and the gallery of the door. As shown in FIG. 3, the undercut 6 or the gallery is located below the door V of the rooms A, E and F facing the corridor H. It has an opening commonly referred to as 7 and conducts conditioned air.

FIG. 4 shows the return path from the corridor H to the suction port of the air-conditioning indoor unit in the case of a full ceiling. As shown in FIG. 4, the rooms E and E correspond to the second room.
In the ceiling portion of F, a return port 4 which is an opening leading to the space M behind the ceiling is provided on the ceiling surface away from the door V.

The return port 4 is provided with a filter 8 and a decorative plate 9. The filter 8 can be omitted by providing a filter at the suction port 3 of the air-conditioning indoor unit 1.

FIG. 5 shows a case where the return path from the corridor H to the suction port of the air-conditioning indoor unit has a partial ceiling. When the ceilings of the rooms E and F are only a part, the vertical wall of the ceiling A return port 4 may be provided in a portion, and the return port 4 may be a grill 10 or a return port 11 with a fan.

As shown in FIG. 5, the conditioned air blown into the first room A from the air-conditioning indoor unit 1 installed in the space behind the ceiling M on the corridor H, through the blowing unit 2, Through the opening, the undercut 6 or the gallery 7 to the corridor H.
Through the opening, undercut 6 or gallery 7
To the rooms E and F corresponding to the room No. 1 and pass through the return port 4 which is an opening provided in the ceiling U of this room, exit to the space M above the ceiling, and return to the suction port 3 of the air-conditioning indoor unit 1. .

During this time, there is only one air-conditioning indoor unit 1,
The circulation path of the conditioned air is composed of a living room, a corridor, a space behind the ceiling, and an undercut 6, a gallery 7, and a ceiling return opening which are provided at the boundary between them.

With the above configuration, an inexpensive air-conditioning circuit with little heat loss can be constructed without using expensive ducts including design and construction because it is difficult to secure duct space.

Needless to say, a gallery 7, an opening with a grill or a fan may be provided on the wall instead of the opening 6 under the door.

FIG. 6 shows details of the vicinity of the air-conditioning indoor unit 1. As shown in FIG. 6, a heat exchanger 12 and a fan 13 are provided inside the air-conditioning indoor unit 1. The returned air is divided into an airflow 14 passing through the heat exchanger 12 and an airflow 15 bypassing the heat exchanger 12, and the mixed airflow 16 is blown by the fan 13 through the blowout unit 2 into a room A corresponding to the first room. It is configured to blow out.

With the above configuration, the circulating airflow 14 passing through the heat exchanger 12 having the largest temperature difference from the concrete slab S, which has the largest air conditioning energy and also serves as the building body, The circulating air closest to the temperature of the concrete slab S returned to the return port 3 of the indoor unit 1 uses the heat exchanger 12
Is created in the air-conditioning indoor unit 1 by the airflow 15 bypassing the airflow, and is blown out to the first room A through the blowout unit 2 by the fan 13.

In this way, the temperature difference between the concrete slab S in the first room A and the conditioned air blown out from the air-conditioning indoor unit 1 through the blowing unit 2 is reduced, and the temperature is absorbed by the concrete slab S in the room A. In addition to reducing the cause of sensible heat loss and reducing the air-conditioning load in the room A, the difference between the blow-out temperature and the room temperature of the room A is also reduced. It is possible to suppress the deterioration of physical condition due to long-term use.

The same effect can be obtained by mixing the airflow passing through the heat exchanger and the airflow bypassing the heat exchanger in the blowout section 2 from the air-conditioning indoor unit instead of performing the airflow in the air-conditioning indoor unit. Can be obtained.

Next, a sensor 17 is mounted on the wall of the room A corresponding to the first room shown in FIG. 1, and the air conditioner operates in addition to the temperature and humidity of the intake air of the air-conditioning indoor unit 1 in addition to the first room. The temperature and humidity detected by the sensor 17 installed at A are detected and controlled.

Thus, it is possible to prevent a time delay that tends to occur due to the control based on the temperature and humidity of the intake air, and to provide the best air conditioning to the first room A, which is positioned at the center of life.

FIG. 7 shows the partition between room A and room B as room A.
Seen from the side.

As shown in FIG. 7, a room A corresponding to the first room and a room B (Japanese-style room) corresponding to the second room are separated by a fuma (fusuma) W, and the room B is a return duct. Without a ceiling that communicates with the space M above the ceiling,
Air supply port with fan 18 provided on the wall and brass (fusuma) W
The room B is conditioned by circulating the conditioned air in the room A to the room B by the gallery 7 which is an opening provided in the gap or the wall surface of the room. It is possible to save costs such as installation and drawing of a duct, and to obtain an air conditioning level equivalent to that of the room A.

FIG. 8 is a plan view showing an openable return port provided on the corridor, and FIG. 9 is a sectional view thereof.

As shown in FIGS. 8 and 9, a second final return path which can be opened and closed is provided from an intermediate return path between the first room and the second room to a suction port of an air conditioning indoor unit. It is.

The suction of the air-conditioning indoor unit 1 from the return port 4 which is an opening provided in the ceiling U of the rooms E and F corresponding to the second room which is incorporated in the return path and is air-conditioned, passes through the space above the ceiling M. Room A in addition to the final return path to mouth 3
An openable / closable return port 19 is provided in the corridor ceiling of an intermediate return path existing between the room E and the room E, F, and a second final return path to the suction port 3 of the air-conditioning indoor unit 1 passes through the space M above the ceiling. It is provided.

By providing the return port 19 which is larger than the return port 4 provided on the final return path passing through the rooms E and F, the rooms E and F can be separated from the door undercut 6 as viewed from the corridor H. Thus, the air resistance through the return port 19 to the suction port 3 of the air-conditioning indoor unit 1 can be set sufficiently smaller than the air resistance to the suction port 3 of the air-conditioning indoor unit 1.

When the openable return port 19 is kept open, the return air in the room A flows from the corridor H to the return port 19.
Through the space M above the ceiling, the air is returned to the suction port 3 of the indoor unit 1, and the room A and the corridor H are mainly air-conditioned. By opening and closing the return port 19, it is possible to select the partial air conditioning around the room A and the overall air conditioning including the rooms E and F.

In the room B, the air conditioning of the room B can be limited by turning off the fan of the air supply port 18 with a fan provided on the wall surface.

FIG. 10 shows a structure around a damper of an air-conditioning indoor unit provided in an air flow path bypassing a heat exchanger.

As shown in FIG. 10, a damper 20 is provided in the flow path of the air flow 15 that bypasses the heat exchanger 12, depending on the temperature and humidity of the intake air of the air-conditioning indoor unit 1, or in the room A corresponding to the first room. The opening degree of the damper 20 is controlled based on the temperature and the humidity detected by the sensor 17 installed in the sensor.

With the above configuration, when the air-conditioning load is large, such as when the air-conditioning is started, the ratio of the airflow 14 passing through the heat exchanger 14 can be increased by making the opening of the damper 20 close to close. The air-conditioning energy of the airflow 16 can be increased, and the air-conditioning output can be increased.

On the other hand, when the load is light, for example, when the load is stable, the opening of the damper 20 is made to approach the fully opened position, so that the heat exchanger 12
, The temperature of the air blown from the air-conditioning indoor unit 1 is brought close to the room temperature of the room A, the air-conditioning load of the room A corresponding to the first room is reduced, and the occurrence of temperature unevenness in the vertical direction By effectively controlling the degree of opening of the damper 20 based on the temperature and humidity detected by the sensor, when the air conditioning load is large, such as at the time of startup, some temperature unevenness may occur in the room A, Even if the energy is increased, the comfort of the air conditioner can be obtained for a short time by the rapid start-up of the air conditioner, and when the indoor temperature and humidity approach the set point, the air temperature is shifted to the outlet temperature with a small temperature difference from the room temperature. Can be obtained automatically.

FIG. 11 is a comparative expression of the temperature of each part based on the embodiment of the present invention during cooling, and FIG. 12 is a comparative expression of the temperature of each part based on the embodiment of the present invention during heating.

FIG. 15 is a comparative representation of the temperature of each part during cooling when a conventional air conditioner is used.
Is a comparative expression of the temperature of each part during heating when a conventional air conditioner is used.

FIG. 13 shows the temperature of air blown from the air conditioner indoor unit to the space above the ceiling from the air conditioner indoor unit installed in the space above the ceiling and the amount of sensible heat lost while passing through the space above the ceiling. It is measured and expressed as a daily average.

The measurement was carried out using an actual apartment house during the cooling period, and FIG.
It is shown in FIG.

Concrete slab temperature: about 30 ° C to 5 ° C
The sensible heat loss absorbed and lost by the concrete slab is almost zero when the blowout temperature is 25 ° C or more, which is within the temperature difference of, but is linear at the blowout temperature of 25 ° C or less, which is a temperature difference of 5 ° C or more. increased.

It goes without saying that the blowing wind speed, the spread of the air flux, and the length of the air path affect these values.

As described above, the embodiment has been described in the case of the center of a multi-family house. The effect of the temperature of the air blown out of the air conditioner on the air-conditioning load is reduced to a fraction of that in the case of a wooden house. Needless to say, the effect of preventing physical illness due to prolonged use remains unchanged.

[0116]

As is apparent from the above embodiment, according to the present invention, an air conditioner is added for the second room or the second air conditioner is used.
The first room, which is the center of life, has the best living environment, and the second room has the same level of use, without having to provide insulation ducts for supplying air-conditioned air to the second room. Air conditioning level can be obtained, and since the air near the room temperature of the first room flows into the second room, the air conditioning load is light, and there is no unevenness in the vertical temperature. An advantageous effect of not breaking is obtained.

In addition, it is difficult to secure the installation space, and there is a problem in the price including the construction cost. The advantageous effect that an air conditioner can be provided is obtained.

Further, by reducing the amount of sensible heat absorbed by the building body in the first room, it has the effect of reducing the air-conditioning load. An advantageous effect of providing an environment that does not break down is obtained.

In addition, there is an advantageous effect that it is possible to save the cost of installing a down ceiling communicating with the space above the ceiling on the corridor H, and to limit the air conditioning to this room by stopping the fan. Can be

A second openable and closable intermediate return path is provided.
, The air conditioning of the second room is restricted by opening this return path, and the first return path is opened.
It can be switched to the air conditioning in the center of the room,
The advantageous effect that the running cost in the second room when not in use for a long time is saved can be obtained.

Further, a damper is provided in the air flow path bypassing the heat exchanger of the air-conditioning indoor unit, and the damper is automatically controlled based on the suction air or the temperature and humidity detected by the sensor installed in the first room. When the machine starts up, it has the same high power startup characteristics as a conventional air conditioner.When it is stable, the blowing temperature approaches the room temperature to reduce the air conditioning load, obtain low running costs, and prevent the occurrence of vertical temperature unevenness. As a result, the advantageous effect of providing a living environment that does not deteriorate the condition even when used for a long time can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a house and an air conditioner showing an embodiment of the present invention.

FIG. 2 is a schematic sectional view of a house and an air conditioner according to an embodiment of the present invention.

FIG. 3 is a front view showing an undercut and a gallery of the door according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view in the case of a full ceiling showing a return path from a corridor to an air-conditioning indoor unit according to an embodiment of the present invention.

FIG. 5 is a sectional view of a partial ceiling showing a return path from a corridor to an air conditioning indoor unit according to an embodiment of the present invention.

FIG. 6 is a sectional view showing the vicinity of an air-conditioning indoor unit according to an embodiment of the present invention.

FIG. 7 is a front view showing a ventilation circuit to a Japanese-style room according to an embodiment of the present invention.

FIG. 8 is a plan view showing an openable return port provided on a corridor according to an embodiment of the present invention.

FIG. 9 is a cross-sectional view showing an openable / closable return port provided on a corridor according to an embodiment of the present invention.

FIG. 10 is a cross-sectional view showing a damper provided in an air flow path bypassing a heat exchanger according to an embodiment of the present invention.

FIG. 11 is a graph comparing and expressing the temperature of each part during cooling based on the embodiment of the present invention.

FIG. 12 is a graph comparing and expressing the temperature of each part during heating based on the embodiment of the present invention.

FIG. 13 is a graph showing the relationship between the blow-out temperature of the air-conditioning indoor unit and the sensible heat loss generated in the air passage in the ceiling, obtained by experiments in connection with the present invention.

FIG. 14 is a sectional view for explaining the experimental situation of FIG. 13;

FIG. 15 is a graph comparing and expressing the temperature of each part when a conventional air conditioner is used for cooling.

FIG. 16 is a graph comparing and expressing the temperature of each part when a conventional air conditioner is used for heating.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air-conditioning indoor unit 2 Blow-out port 3 Suction port 4 Return port 6 Opening (undercut) 7 Opening (gallery) 12 Heat exchanger 13 Fan 14 Circulating air flow (Heat exchanger passing) 15 Circulating air flow (Heat exchanger bypass) 17 Sensor 18 Air supply port with fan 19 Openable / closable return port 20 Damper A First room B Second room E Second room F Second room H Corridor M Ceiling space W Fuma V door

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takao Nomura 6-2-61 Imafukunishi, Joto-ku, Osaka-shi, Osaka Matsushita Seiko Co., Ltd. F-term (reference) 3L049 BB07 BB09 3L053 BB07

Claims (7)

[Claims] 1. An air-conditioning indoor unit for air-conditioning a house having a plurality of rooms, a first room air-conditioned by conditioned air blown out from the air-conditioning indoor unit, and an air-conditioning return path installed in the first room. An air conditioner for a condominium, comprising a single or a plurality of second rooms to be air conditioned. 2. An air-conditioned indoor unit installed in the space above the ceiling blows out conditioned air to the first room, and the return air is conducted to the second room through an opening or a corridor provided in a door or a wall. The air conditioner for an apartment house according to claim 1, wherein the second room is air-conditioned. 3. The multi-dwelling house according to claim 1, wherein the air-conditioning indoor unit has a circulating air flow passing through the heat exchanger and a circulating air flow bypassing the heat exchanger, and mixes and blows them out. For air conditioners. 4. A temperature and humidity of a sensor installed in a first room which is air-conditioned by conditioned air blown out from the air-conditioning indoor unit, in addition to a temperature and humidity of intake air of the air-conditioning indoor unit, is detected and controlled. The air conditioner for an apartment house according to claim 1, wherein 5. A fan provided on a wall in air conditioning of a Japanese-style room corresponding to a second room adjacent to a second room which is divided by a brass into a first room air-conditioned by conditioned air blown from an air-conditioning indoor unit. The multi-family housing according to claim 1, wherein the air conditioning of the first room is circulated to the second room by the air supply opening provided and a gap provided between the brass or an opening provided in the wall surface, thereby achieving air conditioning. For air conditioners. 6. An intermediate return existing between the first room and the second room, in addition to the final return route which is returned to the air-conditioning indoor unit from the second room which is incorporated in the return path and air-conditioned. The air conditioner according to claim 1 or 2, wherein a second final return path is provided by a return port that can be opened and closed from the road to the air conditioning indoor unit. 7. A damper is provided in an air flow path bypassing the heat exchanger, and the temperature and humidity of the suction air of the air conditioning indoor unit or the temperature and humidity detected by a sensor installed in the first room are used to control the damper. The air conditioner for a condominium according to claim 3, wherein the opening is controlled.