JP2000146275A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain comfortable air conditioning by contriving the dissolution of the inequality of indoor temperature distribution, especially, the dissolution of temperature difference between the upper part and the lower part within a room, in an object which performs air conditioning operation covering a plurality of living rooms. SOLUTION: On the premise that an air conditioner performs the air conditioning of plural living rooms Ra-Rb, this possesses an indoor machine which exchanges heat with introduced indoor air and cools or heat it, a main duct which carries air heat-exchanged by this indoor machine to each living room, blowout parts 15a-15b which blow out and guide carried heat-exchange air to a room, being provided in the living room and, an axial flow blower 17 which blows out heat-exchange air carried from this blowout part into a room, and a suction opening 19 which leads and mixes the indoor air in the periphery of the blowout part to the heat-exchange air blown out by the blower, being provided at the blowout part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for air conditioning a plurality of living rooms.

[0002]

2. Description of the Related Art In a general house, there are a plurality of rooms, and it is considered that each of these rooms is air-conditioned by a single air conditioner. On the other hand, each room is air-conditioned by one air conditioner. I have an idea.

[0003] Manufacturers provide products that can handle either of these, but controlling the operation with a single air conditioner saves equipment costs and reduces the space required for arranging the devices. But it is advantageous.

In this case, a duct or a signal line is used to connect the main body of the apparatus having the control unit or the total heat exchange ventilator to each of the rooms by a duct or a signal line, and an air flow control means such as a damper is provided at the outlet of the duct to each room. .

[0005] The detection information of the temperature sensor installed in each room is fed back to the control unit, and the opening degree of the air volume control means for each room is centrally controlled based on a control signal from the control unit. I have.

[0006]

In such a conventional air conditioner, heat exchange air is blown from a maximum air volume to a zero air volume by opening and closing control by an air volume control means provided at an outlet of a duct. Adjustments can be made.

In other words, the maximum air volume and the maximum air speed of the heat exchange air blown out from the outlet are limited to fixed values, and it is not possible to expect any further increase in the air volume and the wind speed.

[0008] Therefore, when the outlet is provided on the ceiling of the living room, there is a possibility that even if warm air is blown from the outlet during heating, it does not reach the floor. Especially the warm air is light,
Since it is easy to accumulate near the ceiling, the temperature distribution in the room becomes uneven, and a temperature difference occurs particularly in the upper and lower portions, which is opposite to the ideal condition of head and foot heat which is ideal for heating.

To make the temperature difference between the upper and lower portions of the room smaller, it is possible to some extent by lowering the temperature of the blown heat exchange air and increasing the amount of supplied air, but the whole house is warmed. Requires a very large supply air volume. As a matter of course, not only the size of the apparatus is increased and the arrangement space is increased, but also the cost is increased.

As another means for eliminating the upper and lower temperature difference,
It is conceivable to install a means for agitating indoor air such as a circulator in each living room. In this case, a plurality of rooms corresponding to the number of rooms must be prepared, which is expensive, and some rooms can be installed, while others cannot.

Further, the temperature difference between the upper and lower portions of the room may occur not only during heating but also during cooling according to the operating conditions and the position of the outlet.

For example, since the room temperature is extremely high at the time of cooling start, the maximum air flow is set to the maximum air speed, but it takes a considerable time to obtain a cooling sensation. In addition, when the outlet is provided at a height slightly higher than the floor, when the blowing air speed is reduced during normal operation, cool air flows along the floor, and is stacked at the lower part of the room and This causes a temperature difference.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a non-uniform temperature distribution in a room on the assumption that air conditioning operation is performed for a plurality of rooms. It is an object of the present invention to provide an air conditioner in which a temperature difference between upper and lower portions is particularly eliminated and comfortable air conditioning is obtained.

[0014]

In order to satisfy the above object, an air conditioner according to the present invention is characterized in that, in an air conditioner which air-conditions a plurality of living rooms, the introduced indoor air and heat are used. Heat exchange means for exchanging and cooling or heating the room air, conveyance means for conveying the air exchanged by the heat exchange means to each living room, and heat exchange means provided in the living room and conveyed by the conveyance means. A blowing unit for blowing air into the room to guide the air; blowing means for blowing the heat exchange air conveyed from the blowing unit to the room; and a blowing unit for the heat exchange air provided in the blowing unit and blown by the blowing means. Mixing guide means for guiding and mixing surrounding room air.

By employing the above-described means, the temperature of the blown warm air is reduced during heating to increase the air volume and the air velocity, so that the temperature difference between the upper and lower portions of the room is reduced.
During cooling, the temperature of the blown cool air is increased to increase the air volume and the air velocity, so that the temperature difference between the upper and lower portions of the room is reduced. In any case, a healthy and comfortable air conditioning effect can be obtained.

According to a second aspect of the present invention, in the air conditioner according to the first aspect, the blowing means comprises an axial blower disposed in the blow-off portion, and the mixing guide means is provided on a suction side of the axial blower in the blow-out portion. It is a suction opening provided.

By adopting such means of the second aspect, it is possible to draw in a temperature higher than the average temperature near the ceiling and blow it out into the room during heating, and further reduce the temperature difference between the upper and lower portions of the room.

According to a third aspect of the present invention, in the air conditioner according to the second aspect, the mixing guide means includes closing means for closing the suction opening.

By adopting the above-described means, particularly at the start-up of the operation, the heat exchange air having a higher temperature is blown out at the time of heating, and the heat exchange air having a lower temperature is blown out at the time of cooling. Can satisfy the feeling of heating and the feeling of cooling when the temperature has not reached the set temperature.

According to a fourth aspect of the present invention, in the air conditioner according to the first aspect, the blowing means comprises a multi-blade flow blower or a cross flow blower, and the mixing guide means has a suction opening provided in the vicinity of a blowing opening of a blowing section. It is characterized by being.

By adopting the means of claim 4, the multi-blade flow blower has a high static pressure, so it is provided with a one-way suction opening to be used when the pressure loss is large. Can be made smaller, and the outlet can be made more compact.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Figure 1 shows a typical house H
1 schematically shows the configuration of an air conditioner A provided therein.

In the figure, reference numeral 1 denotes a first floor ceiling.
Is provided. Therefore, two first-floor rooms Ra and Rb are formed on both left and right sides of the first-floor common space 3.

In the figure, reference numeral 4 denotes a floor on the second floor, and a common space 6 such as a corridor is provided between the ceiling 5 and the second floor in a substantially central part of the figure. Therefore, 2 on both sides of the common space 6
Two floor rooms Rc and Rd are formed.

Outside the house H, an outdoor unit 7 constituting the air conditioner A is provided. An indoor unit 9 that constitutes the air conditioner A together with the outdoor unit 7 is disposed in a space 8 on the first floor ceiling 1 facing the first floor common space 3 and between the second floor 4 and the floor. ing.

Components of the heat pump type refrigeration cycle are accommodated in the indoor unit 9 and the outdoor unit 7 and connected to each other via a signal line cable, a refrigerant pipe (both not shown), and the like. Here, the indoor unit 9 constitutes a heat exchange unit.

The undercuts and slurries of the doors in each of the rooms Ra to Rd form a suction portion 10 and communicate with each of the rooms Ra to Rd with the common space 3 on the first floor and the common space 6 on the second floor.

A suction port is provided on the lower surface side of the indoor unit 9, and is opened on one ceiling surface of the common space 3 on the first floor. A suction port is also provided on the upper surface side of the indoor unit 9, and is communicated via a suction duct 11 provided between the indoor unit 9 and the second floor 4 of the common space 6 on the second floor.

The outlets of the indoor unit 9 are provided on both the left and right sides of the figure, and the main ducts 12a and 12b are provided respectively.
Are connected at one end. Each main duct 12a, 12b
The other end of the chamber 13 is located on the ceiling 1 on the first floor.
a, 13b.

Each of the chambers 13a and 13b is connected to two branch ducts 14a to 14d. The lower branch chambers 14a, 14b are respectively located on the first floor living rooms Ra,
Ceiling outlets 15a, 15b provided on the ceiling surface of Rb
Connected to. The upper branch chambers 14c and 14d are connected to floor surface outlets 15c and 15d arranged on the floor surface 4 of the second floor living rooms Rc and Rd.

As described above, the main ducts 12a, 12b and the chambers 13a, 13a, extending from the indoor unit 9 to the ceiling outlets 15a, 15b and the floor outlets 15c, 15d.
13b and the branch ducts 14a to 14d constitute a transport unit C for transporting the heat exchange air.

A temperature sensor S is mounted on the walls of the living rooms Ra to Rd on the first and second floors, and is electrically connected to the control unit of the indoor unit 9. These temperature sensors S are provided in each room R
The temperature of a to Rd is detected, and the detection signal is transmitted to the control unit. The control unit rotates a damper d provided in the middle of each of the branch ducts 14a to 14d to control the supply amount of the heat exchange air.

As shown in FIG. 2, the ceiling outlet 15
In a and 15b, the first floor ceiling 1 also serves as the upper surface, and a hole 16 is provided in which the open ends of the branch ducts 14a and 14b communicate. It is formed of a thin box in the vertical direction, and accommodates therein an axial blower 17 as a blower with its axial direction oriented vertically.

Naturally, the vertical dimensions of the ceiling outlets 15a, 15b are set to the minimum dimensions necessary to accommodate the axial blower 17. A blowout opening 18 is provided on the lower surface, and suction openings 19, 19 are provided on the left and right side surfaces.

The outlet opening 18 is provided with a decorative grill 20
And is shielded from the eyes of the occupants in the first-floor rooms Ra and Rb. Suction opening 1
The shutter 9 is provided with a shutter 21 that constitutes a closing means, and is configured to completely open and close the suction opening 19 based on a control signal from a control unit (not shown) housed in the indoor unit 9.

As shown in FIG. 4, the floor surface outlet 15
In c and 15d, the second floor 4 also serves as the lower surface,
A hole 23 is provided to allow the open ends of the branch ducts 14c and 14d to communicate with each other. It consists of a thin box in the vertical direction,
An axial blower 17 as a blower is accommodated in the interior with the axial direction directed vertically.

Naturally, the vertical dimension of the floor surface outlets 15c and 15d is set to the minimum dimension necessary for accommodating the axial blower 17. A blowout opening 24 is provided on the upper surface, and suction openings 25, 25 are provided on the left and right side surfaces.

The outlet opening 24 is provided with a decorative grill 26
And is shielded from the eyes of the occupants in the second-floor rooms Rc and Rd. Suction opening 2
5 is provided with a shutter 27 which constitutes closing means, and based on a control signal from a control unit, the suction opening 2 is provided.
5 is completely opened and closed.

In the air conditioner thus configured, the return air after heating or cooling the designated living rooms Ra to Rd is sucked into the suction section 10 provided in each of the living rooms Ra to Rd. It is led to the indoor unit 9 from the common spaces 3 and 6 on the first or second floor.

Then, heat exchange occurs with the heat exchanger constituting the refrigeration cycle housed in the indoor unit 9, and the temperature rises or falls again. This heat exchange air is supplied to each main duct 1
The air is blown out to 2a, 12b and guided to branch ducts 14a to 14d via the respective chambers 13a, 13b.

From the branch ducts 14a to 14d, ceiling outlets 15a and 15b or floor outlets 15c and 1
5d, each room Ra from the blowing openings 18 and 24
To Rd to perform heating or cooling action. With the above configuration and operation, air conditioning of the entire house H is possible.

A more detailed description will be given. When heating is performed, the air that has been heat-exchanged in the indoor unit 9 is supplied at a temperature higher than room temperature (normally, 30 to 45 ° C.). The higher the temperature of the air, the lower its density, and the lighter the air, the lighter it rises. Therefore, a temperature difference occurs between the upper and lower portions of the room as it is.

In the present invention, as shown in FIG.
Ceiling outlets 15a, 1 provided in floor rooms Ra, Rb
5b is driven to drive the branch duct 14
a, 14b accelerates the heat exchange air guided from each room R
a, blow to Rb. As a result, the degree to which the heat exchange air reaches the first floor 2 is increased.

Further, with the driving of the axial blower 17, the pressure inside the ceiling outlets 15a and 15b decreases,
The room air in the peripheral portion is drawn and sucked into the inside through the suction opening 19.

In the ceiling outlets 15a and 15b,
The heat exchange air guided from the branch ducts 14a and 14b is mixed with the surrounding air, and then blown out to the living rooms Ra and Rb through the blowout opening 18.

As described above, the ceiling outlet 15
Since the ambient airs a and 15b are mixed, the temperature of the heat exchange air actually blown out from the blow-out opening 18 to the living rooms Ra and Rb decreases, while the blow-out air volume increases and the blow-off wind speed increases.

Therefore, the temperature difference between the upper and lower portions of the room is reduced, and comfortable heating can be obtained. The temperature of the surrounding air drawn into the ceiling outlets 15a and 15b is higher than the average temperature in the living rooms Ra and Rb, and the air is circulated in the room. There is a further effect on the reduction.

On the other hand, in the second-floor rooms Rc and Rd, the axial blower 17 in the floor-surface outlets 15c and 15d is driven to blow heat exchange air guided from the branch ducts 14c and 14d upward. . On the way, the heat exchange air mixes with the air in the rooms Rc and Rd, and rises while heating the rooms Rc and Rd.

The mixed air hits the ceiling 5 surface, or diffuses to the surroundings on the way, descends, and then descends again.
And the suction opening 2 of the floor surface outlets 15c and 15d
It is sucked inside from 5.

Then, since the air is mixed with the high-temperature heat exchange air guided from the branch ducts 14c and 14d and blown out inside the floor blowing parts 15c and 15d, the temperature difference between the upper and lower parts of the room is reduced.

It should be noted that the room temperature is expected to be extremely low when heating is started. At this time, when the temperature sensor S detects the temperature equal to or lower than the predetermined temperature, as shown in FIGS. 3 and 5, the control unit controls the shutters 2 of the ceiling and floor surface blowing units 15a to 15d.
1 and 27 are driven to close the suction openings 19 and 25.

Therefore, only the high-temperature heat exchange air guided through the branch ducts 14a to 14d is blown out to each of the living rooms Ra to Rd by the axial flow blower 17, and the ceiling and floor blowout portions 15 are formed.
There is no air suction around a to 15d.

In the first-floor rooms Ra and Rb, at least the positions immediately below the ceiling outlets 15a and 15b and the peripheral positions thereof locally and rapidly rise in temperature. A feeling of heating may be obtained. Naturally, the temperatures of the first-floor rooms Ra and Rb rise to the set temperature in a short time.

In the rooms Rc and Rd on the second floor, the shutters 27 of the floor outlets 15c and 15d are driven to close the suction opening 25. The high-temperature heat exchange air guided from the branch ducts 14c and 14d is supplied to the floor surface outlets 15c and 15d.
The temperature rises locally and rapidly in the area immediately above and in the surrounding area, so that a feeling of rapid heating can be obtained. Naturally, the temperatures of the second-floor rooms Rc and Rd rise to the set temperature in a short time.

During the cooling operation, the operation is as follows.

That is, when cooling is performed, the indoor unit 9 blows out cold air, which is heat exchange air at a temperature lower than room temperature.
This cool air is dense and flows down naturally.

As shown in FIG. 2, in the ceiling outlets 15a and 15b of the first-floor rooms Ra and Rb, the cool air blown from the outlets 18 naturally flows out without driving the axial blower 17. Since it flows down and becomes a laminated state sequentially from the lower part of the living rooms Ra and Rb, the occurrence of a temperature difference between the upper and lower parts of the room is small.

As shown in FIG. 4, in the living rooms Rc and Rd on the second floor, the axial blower 17 is driven to drive the floor blowing section 15.
Cool air is supplied from c and 15d. Thereby, the heat exchange air guided from the branch ducts 14c and 14d is accelerated. The pressure inside the floor surface outlets 15c and 15d is reduced, and the room air in the peripheral area is attracted to the suction openings 2c.
Sucked in through 5.

Inside the floor surface outlets 15c and 15d,
The surrounding air is mixed with the heat exchange air guided from the branch ducts 14c and 14d, and then blown out to the living rooms Rc and Rd through the blowout opening 24.

As described above, the floor surface outlet 15
Since the air around c and 15d is mixed, the temperature of the heat exchange air actually blown out from the blowout opening 24 to the living rooms Rc and Rd rises, while the blowout air volume increases and the blowout wind speed increases.

Therefore, the temperature difference between the upper and lower portions of the room is reduced, and comfortable cooling can be obtained. In addition, blowout part 2
The temperature of the cold air that directly hits the resident in the vicinity of 4 increases, and discomfort is alleviated.

At the start of cooling, the room temperature is expected to be extremely high. At this time, when the temperature sensor S detects a predetermined temperature or higher, as shown in FIGS. 3 and 5, the control unit controls the shutters 2 of the ceiling and floor surface blowing units 15 a to 15 d.
1 and 27 are driven to close the suction openings 19 and 25.

Therefore, only the low-temperature heat exchange air guided through the branch ducts 14a to 14d is blown out to each of the living rooms Ra to Rd by the axial blower 17, and the ceiling floor surface blowing portion 15a
There is no air suction around 周 辺 15d.

In the first-floor rooms Ra and Rb, at least the positions immediately below the ceiling outlets 15a and 15b and the peripheral positions thereof locally and rapidly decrease in temperature, so that they are moved to the positions as needed and rapidly moved to the positions. A feeling of cooling may be obtained. Naturally, the temperatures of the first-floor rooms Ra and Rb fall to the set temperature in a short time.

In the second-floor rooms Rc and Rd, the shutters 27 of the floor outlets 15c and 15d are driven to close the suction opening 25. The low-temperature heat exchange air led from the branch ducts 14c and 14d is supplied to the floor surface outlets 15c and 15d.
And the vicinity thereof is locally and rapidly cooled to obtain a feeling of rapid cooling. Naturally, the temperatures of the second-floor rooms Rc and Rd fall to the set temperature in a short time.

In the above-described embodiment, the axial blower 17 is used as the blower, but the present invention is not limited to this and may be described below.

For example, as shown in FIG.
In the ceiling outlet 15A attached to the ceiling 1a, Rb, a multi-blade air blower 17A may be used as a blower disposed inside the ceiling blower 15A.

The axial direction of the multi-blade fan 17A is the ceiling 1
It is directed parallel to the surface, and inhales air from both ends to blow it out in the circumferential direction. That is, the branch duct 14
a, 14b and suction opening 19 provided with shutter 21A
Air is sucked in from A, and is blown out from a blowing opening 18A provided on the lower surface.

Since the multiblade blower 17A has a high static pressure, the suction opening 19A in the ceiling outlet 15A is provided.
Can be provided only in one direction, and is advantageously used when the pressure loss is large.

As shown in FIG. 7, for example, on the first floor living room R
In the ceiling blowing section 15B attached to the ceiling 1a, Rb, a crossflow fan 17B may be used as a blowing means disposed inside.

The axial direction of the cross-flow blower 17B is parallel to the surface of the ceiling 1 and inhales air from the circumferential direction and blows out the air in the circumferential direction. That is, the branch ducts 14a and 14b and the shutter 2
Air is sucked from the suction opening 19B provided with 1B,
It is blown out from a blowout opening 18B provided on the lower surface.

In the case of the above-mentioned cross-flow blower 17B, a small-diameter blower can be adopted, so that the ceiling blow-out portion 15B can be made compact.

In each of the blowers 17A and 17B, the heat exchange air guided from the branch ducts 14a and 14b is accelerated, and the ceiling outlets 15A and 15B are used.
By reducing the internal pressure, the room air is positively drawn into the ceiling outlets 15A and 15B from the suction openings 19A and 19B and blown into the room.

Accordingly, the amount of air blown out increases, and the temperature of air blown from ceiling blowout sections 15A and 15B decreases during heating, and the ceiling blowout sections 15A and 15B decrease during cooling.
Since the temperature of the air blown from B rises, there is no difference in temperature between the upper and lower portions of the room, so that comfortable heating and comfortable cooling can be obtained.

The multi-blade fan 17A and the cross-flow fan 17B are used not only for the ceiling outlets 15A and 15B of the first-floor rooms Ra and Rb, but also for the second-floor room R.
It can be used for the floor surface blowing part of c and Rd.

[0076]

As described above, according to the present invention, in an air conditioning operation for a plurality of living rooms, the temperature distribution in the room is not uniform, especially, the temperature difference between the upper and lower portions of the room is eliminated. Therefore, it is possible to obtain an effect that comfortable air conditioning can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a general house and an air conditioner according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a ceiling outlet of the first floor living room according to the embodiment;

FIG. 3 is an explanatory diagram of a ceiling blow-out portion during a start-up operation according to the embodiment;

FIG. 4 is a schematic configuration diagram of a floor-surface outlet of a second-floor living room according to the embodiment;

FIG. 5 is an explanatory view of a floor surface blowing portion during a start-up operation according to the embodiment.

FIG. 6 is a schematic configuration diagram of a ceiling blowing section according to another embodiment.

FIG. 7 is a schematic configuration diagram of a ceiling blowing section according to still another embodiment.

[Explanation of symbols]

 Ra, Rb, Rc, Rd: living room; 9: heat exchange means (indoor unit); C: transport means; ), 19, 25: mixing guide means (suction opening), 21, 27: closing means (shutter), 17A: multi-blade flow fan, 17B: cross flow fan.

Claims (4)

[Claims] 1. An air conditioner for performing air conditioning for a plurality of living rooms, a heat exchange means for exchanging heat with introduced indoor air to cool or heat the room air, and a heat exchanging means for the heat exchange means. Conveying means for conveying the exchanged air to each living room; a blowing unit provided in the living room for guiding the heat exchange air conveyed by the conveying means into the room; and heat transferred from the blowing unit to the room. A blower that blows exchange air; and a mixing guide that is provided in the blower and guides and mixes indoor air around the blower with heat exchange air blown by the blower. An air conditioner characterized by: 2. The air blower comprises an axial blower disposed at the blower, and the mixing guide means is a suction opening provided on the suction side of the axial blower at the blower. The air conditioner according to claim 1, characterized in that: 3. An air conditioner according to claim 2, wherein said mixing guide means includes closing means for closing said suction opening. 4. The blower according to claim 1, wherein the blower comprises a multi-blade blower or a cross flow blower, and the mixing guide is a suction opening provided in the vicinity of the blowout opening of the blowout portion. The air conditioner according to any one of the preceding claims.