JP2677079B2 - Air conditioner with ventilation function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner with a ventilation function for performing ventilation and cooling / heating by combining ventilation devices.

[0002]

2. Description of the Related Art FIG. 5 is a sectional view of an essential part of a room in which a conventional ventilation / air-conditioning device disclosed in, for example, Japanese Patent Laid-Open No. 62-69031 is installed. An inlet 1 and an indoor outlet 2 are provided. An outside air suction port 3 is provided on the wall surface in contact with the outside air. An air blower fan 5 and a duct 13 that connects the indoor air intake port 1 and the outdoor air intake port 3 are installed in the ceiling 12, and dampers 8 and 9 that switch the air flow are installed in the duct 13. There is. A damper 1 that switches the flow of air even on the leeward side of the blower fan 5
0 and 11 are provided, and the damper 10 is provided in the exhaust duct 4 that is a ventilation path that interlocks with the outside air and exhausts indoor air. The damper 11 is provided in a ventilation path between the blower fan 5 and the indoor outlet 2.
Further, between the damper 11 and the indoor outlet 2, a use side heat exchanger 6 of a separate type heat pump air conditioner is provided. The outdoor unit 7 is connected to the use side heat exchanger 6.

Next, the operation will be described. In the above-described configuration, by opening the dampers 9 and 11 and closing the dampers 8 and 10, the indoor air sucked by the blower fan 5 is cooled or warmed from the outlet 2 that is heat-exchanged by the use-side heat exchanger 6. Blow out the wind. Next, the damper 8,
9 is opened at an appropriate opening, and the openings of the dampers 10 and 11 are appropriately adjusted to discharge a part of the air sucked by the blower fan 5 to the outside through the exhaust duct 4.
By heat-exchanging the rest with the use side heat exchanger 6 and blowing out cool air or warm air from the indoor outlet 2, it becomes possible to ventilate while cooling or heating. If heat is not exchanged in the use side heat exchanger 6 in the above, ventilation will be performed.

[0004]

Since the conventional air conditioner for ventilation and cooling and heating is constructed as described above, detailed design of the duct is required at the time of installation, and the air conditioner for performing ventilation and cooling and heating is required. When installed independently, there was a problem that it took time to operate.

The present invention has been made in order to solve the above-mentioned problems, and whether the duct connection form is common or independent between the ventilation device and the air conditioner, the operation command is generated by one operation command generating means. The purpose of the present invention is to obtain an air conditioner with a ventilation function capable of operating only ventilation, operating only cooling and heating, operating both ventilation and cooling and heating, and stopping the entire operation.

[0006]

An air conditioner with a ventilation function according to the present invention is connected to a room by a duct,
An indoor unit of an air conditioner having a blower fan, a ventilation device that takes in outside air into the room by a duct shared with the indoor unit or a dedicated duct, and if the indoor unit and the ventilation device share a duct, with outside air intake, When the ventilator has a dedicated duct, the outside air intake presence / absence setting means for setting no outside air intake, and the operation of ventilation only, the operation of only cooling and heating, the operation of both ventilation and cooling and heating to the indoor unit and the ventilation device,
When the operation command generation means for generating the operation command for all stop and the operation command of the operation command generation means is the operation only for ventilation and the setting of the outside air intake presence / absence setting means is the intake of outside air, the blower fan is driven. The first control means and the second control means for stopping the blower fan when the operation command of the operation command generation means is an operation of only ventilation and the setting of the outside air intake presence / absence setting means is no outside air intake. Be prepared.

[0007]

In the air conditioner with a ventilation function according to the present invention, when the outside air intake presence / absence setting means is set to the outside air intake during the operation of only ventilation, the blower fan is driven and the outside air intake presence / absence setting means is set to the outside air. If there is no intake, control the fan to stop it.

[0008]

[Embodiment 1] An embodiment of the present invention will be described below with reference to the drawings. FIG.
In, a ceiling 12 of the building is provided with an indoor air intake port 1 and an indoor air outlet port 2. An outside air suction port 3 is provided on the wall surface in contact with the outside air. Inside the ceiling 12, a ventilation device 21 and an indoor unit 20 of a separate type air conditioner are installed. A duct 16 connecting the ventilation device 21 and the indoor air intake 1 and a duct 17 branching from the duct 16 are installed, and a duct 14 is installed on the leeward side of the exhaust fan 5c of the ventilation device 21. Further, a duct 13 that connects the ventilation device 21 and the outside air intake port 3 is installed, and a duct 18 that connects to the intake port of the indoor unit 20 is installed on the lee side of the air supply fan 5b. The indoor unit 20 has a blower fan 5a and a use-side heat exchanger 6 built therein, and a duct 19 connected to the indoor outlet 2 is installed on the outlet side of the indoor unit. The outdoor unit 7 is connected to the indoor unit 20. The indoor unit controller 30 is the indoor unit 20.
And the ventilator controller 40 controls the ventilator 2
The operation control of No. 1 is performed.

In addition, FIG. 2 shows that an indoor air intake port 1a for the indoor unit 20 and an indoor air intake port 1b for the ventilation device 21 are independently provided, and an indoor air outlet port 2a for the indoor unit 20 is provided. The indoor outlet 2b for the ventilation device 21 is independently provided.

FIG. 3 is a block diagram of a controller 30 attached to the indoor unit 20 to control the indoor unit. In FIG. 3, the microcomputer 31 that performs arithmetic processing according to a predetermined program is operated by ventilation only, operation by cooling / heating only, operation by both ventilation and cooling / heating depending on the setting value of the outside air intake presence / absence setting means 32 such as a switch. Further, based on the input of the operation command generating means 33 for generating four kinds of operation commands of all stop, the fan driving means 34 and the ventilation device control data transmitting means 35 are appropriately output.

Next, the operation will be described. In FIG. 3, the indoor unit controller 30 is instructed by the operation command generation unit 33 to perform either ventilation only operation, cooling / heating only operation, or both ventilation and cooling / heating operation, and the operation control of the indoor unit is performed based on the instruction. At the same time, the ventilation device control data transmitting means 35 controls the operation of the ventilation device 21. In FIG. 1, the outside air intake presence / absence setting means 32 of the indoor unit controller 30 is set to have the outside air intake, and even if the operation of only ventilation, only cooling / heating, or both ventilation and cooling / heating is instructed, the fan The driving means 34 drives the blower fan 5a. In addition, in the case of FIG. 2, the outside air intake presence / absence setting means 32 of the indoor unit controller 30 is set to no intake of outside air, and the ventilation fan 5a is not operated in the case of ventilation only. Therefore, in the operation of only ventilation, in the case of FIG. 1, the outside air passes through the duct 13 from the outside air inlet 3, and then the duct 1 is supplied by the air supply fan 5b of the ventilation device 21.
Air is supplied to the suction side of the indoor unit 20 via 8. Furthermore, the air is blown into the room from the indoor blow-out port 2 through the duct 19 by the blower fan 5a of the indoor unit 20.
In the case of FIG. 2, the outside air is introduced from the outside air inlet 3 to the duct 13
After that, the air is supplied to the room from the indoor outlet 2b through the duct 18 by the air supply fan 5b of the ventilation device 21.

FIG. 4 is a flow chart showing the control operation of the microcomputer 31. First, step 10
In step 0, the initial setting for the control operation is performed, and in step 101, the operation command is input. Based on the input operation command, it is determined in step 102 whether or not to perform the ventilation operation. If the ventilation operation is to be performed, the operation command to the ventilation device is issued in step 103, and if not, to step 104.
Stop command to the ventilator at step 10
Go to 5. In step 105, it is determined whether or not the cooling / heating operation is performed, and when the cooling / heating operation is performed, the process proceeds to step 108. When the cooling / heating operation is not performed, the routine proceeds to step 106, where it is determined whether or not the ventilation operation is performed. Therefore, when the ventilation operation is not performed, that is, when the operation is completely stopped, the process proceeds to step 109,
The fan drive output is turned off to stop the fan. Also,
When the ventilation operation is performed, that is, when only the ventilation operation is performed, the setting of the outside air intake setting means is determined in step 107. When the outside air intake setting is not set, that is, in the case of the duct connection configuration shown in FIG. 2, step 1
Go to 09 and stop the fan. When the outside air intake setting is enabled, that is, in the case of the duct connection configuration shown in FIG. 1, the process proceeds to step 108 and the fan drive output is turned on.
And drive the fan. After steps 108 and 109, the process returns to step 101.

Embodiment 2 FIG. In the above embodiment, the operation command generating means is described as being incorporated in the indoor unit controller, but the same effect can be obtained even if the communication means is separately used and realized by a remote controller.

[0014]

As described above, according to the present invention, the outside air is taken into the room by the indoor unit of the air conditioner which is connected to the room by the duct and has the indoor fan, and the duct shared with the indoor unit or the exclusive duct. Outside air intake presence / absence setting means for setting outside air intake with the ventilation device, when the indoor unit and the ventilation device share a duct, and without outside air intake when the ventilation device has a dedicated duct, and the indoor unit and the ventilation device. To the ventilation only operation, only the cooling and heating operation, both ventilation and cooling and heating operation, operation command generation means for generating the operation command of the total stop, and the operation command of the operation command generation means is only ventilation operation, and When the outside air intake presence / absence setting means is set to have outside air intake, the first control means for driving the indoor fan and the operation command of the operation command generation means are ventilation-only operations and When the setting of the intake presence / absence setting means does not include the outside air intake, the configuration is provided with the second control means for stopping the indoor fan. Therefore, the duct connection form may be shared between the ventilation device and the air conditioner or may be dedicated. It is possible to obtain an air conditioner with a ventilation function capable of operating only ventilation, operating only cooling and heating, operating both ventilation and cooling and heating, and completely stopping it by operating instructions from one operating instruction generating means.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a building showing an example of a duct connection form of a cooling / heating apparatus with a ventilation function according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of a building showing another example of the duct connection form of the cooling / heating apparatus with a ventilation function according to the embodiment of the present invention.

FIG. 3 is a block diagram of an indoor unit controller of a cooling / heating apparatus with a ventilation function according to an embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the microcomputer of the indoor unit controller of the cooling / heating apparatus with ventilation function according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view of a main part of a room in which a conventional ventilation and cooling / heating device is installed.

[Explanation of symbols]

 5a Fan for ventilation 13 Duct 14 Duct 16 Duct 17 Duct 18 Duct 19 Duct 20 Indoor unit 21 Ventilator 31 Microcomputer 32 Outside air intake presence / absence setting means 33 Operation command generating means

Claims (1)

(57) [Claims] 1. An indoor unit of an air conditioner, which is connected to a room by a duct and has a fan for blowing, a ventilation device for taking in outside air into the room by the duct or a dedicated duct shared with the indoor unit, and the room. Outside air intake presence / absence setting means for setting outside air intake when the air conditioner and the ventilation device share the duct and outside air intake when the ventilation device has the exclusive duct, the indoor unit and the ventilation device And operation of ventilation only, operation of cooling and heating only, operation of both ventilation and cooling and heating, operation command generation means for generating operation command of total stop, and the operation command of this operation command generation means operation of ventilation only And when the setting of the outside air intake presence / absence setting means is that there is outside air intake, the first blower fan is driven.
And the operation command of the operation command generation means is an operation only for ventilation, and the setting of the outside air intake presence / absence setting means is no outside air intake, the second fan is stopped.
An air conditioner with a ventilation function, comprising: