JPH05215380A - Separate duct type air conditioner and branch chamber thereof - Google Patents

Abstract

PURPOSE:To prevent a decrease in an air conditioning efficiency of an area to be conditioned by composing a residual air discharge control in a duct at the time of starting an operation of a separate duct type air conditioner of an inexpensive system. CONSTITUTION:The separate duct type air conditioner comprises indoor heat exchanger temperature sensing means 23 for sensing a temperature of an indoor heat exchanger 21, diffuser dampers 13 each having a switch 30 and in which a priority order of air conditioning of the individual dampers 13 can be set, and control means having a flow of receiving an output from the means 23 and deciding switching of the damper 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separable duct type air conditioner and a branch chamber of the duct type air conditioner.

[0002]

2. Description of the Related Art FIG. 9 is a system configuration diagram of a conventional separable duct type air conditioner disclosed in, for example, Japanese Patent Laid-Open No. 1-318844. 1 is an air-conditioned area, 3 is an air-conditioned area 1
To the air-conditioning area 1, a duct 7, a corridor, 9 a bypass damper for discharging residual air, 1
3 is a blowout damper provided at the air outlet 3, 15 is a terminal microcomputer arranged in the air-conditioned region, 16 is a damper 9, 1
3, a damper driving motor for driving 3, a 17 for detecting the temperature of the conditioned air, a blow-out temperature sensor provided in the duct 5, 19 for an air conditioning mechanism, 21 for a heat exchanger, and 23 for a heat exchanger 21. A heat exchange sensor, 25 is an indoor fan that blows conditioned air to the duct 5, 27 is a main microcomputer provided in the air conditioner main body, 29 is a main body remote controller for operating the air conditioner main body 11, and 31 is a return port.

Next, the operation will be described. After the operation is started, the bypass damper 9 is fully opened and the blowout damper 13 is fully closed to discharge the residual air in the duct 5 before the start of the operation, and a detection signal detected by the blowout port temperature sensor 17 and the heat exchange sensor 23. From this, the start of the operation is judged by detecting that the residual air is exhausted, and when the start of the operation is judged, the bypass damper is fully closed.
It operates to open the balloon damper.

As another conventional air conditioner, Japanese Unexamined Patent Application Publication No. Hei 2
The one disclosed in Japanese Patent Publication No. 29537 has been proposed.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the conventional example shown in Japanese Patent Laid-Open No. 4 publication, a blowout temperature sensor and a bypass damper must be provided in each blowout port, which makes the system itself expensive, and when the air-conditioning load of the entire system is large, it is difficult to obtain a predetermined blowout. There is a problem that the temperature does not reach the temperature and the blowing damper does not open.

Since the other conventional air conditioner disclosed in Japanese Patent Application Laid-Open No. 2-29537 is constructed as described above, the variable air volume units are dispersedly installed near the air outlet of each air-conditioned room. Therefore, each location must be provided with an inspection port for repair and inspection. Therefore, the appearance of the ceiling is impaired and the installation work is difficult. In addition, there is a problem in that handling is difficult because the installation space of the variable air volume unit port and the inspection port position at the time of duct piping are difficult, and the pressure loss due to bending of the duct becomes large.

The present invention has been made in order to solve the above-mentioned problems, and each of the indoor air outlets has a rank switch (a switch for setting the priority of air conditioning) so that it remains in the air-conditioned area. The purpose is to provide an inexpensive system that suppresses the blowing of air, and to shorten the startup time and to control the air volume to each air-conditioned room by forcibly increasing the system capacity at startup. The purpose is to obtain an air conditioner that can be installed and inspected by centralizing the variable air volume control device.

[0008]

A separate duct type air conditioner according to a first aspect of the present invention includes an indoor heat exchanger temperature detecting means, a room damper air conditioning priority setting switch, a room damper, an indoor heat exchanger temperature detecting means. The room damper air-conditioning priority setting switch has an operation damper verification flow for determining opening / closing of each room damper.

According to a second aspect of the separated duct type air conditioner,
Each room has a bypass damper, each room blower damper, and a flow for forcibly increasing the system capacity after the start of operation and determining the time after the start of operation and the blowout temperature of each room as to whether the blowout temperature has risen.

According to a third aspect of the duct type air conditioner of the present invention, there is provided a damper for controlling the air volume to the air outlets of the branch chambers distributed to the air-conditioned rooms, a motor for opening and closing the damper, and a control board for controlling the operation of the motor. Be prepared.

[0011]

In the separated duct type air conditioner according to the first aspect of the present invention, each room has a damper air conditioning priority setting switch so that the residual air in the duct at the start of operation can be supplied to the air-conditioned area by an inexpensive system. To keep things down.

The separate duct type air conditioner of claim 2 is
By forcibly increasing the compression function and indoor blower air volume after operation starts to exhaust the residual air in the duct to the non-air-conditioned area in a short time, the start-up time of operation is shortened and the air conditioning efficiency of the air-conditioned area is reduced. Hold down.

In the separated duct type air conditioner according to the third aspect of the present invention, the branch chamber is provided with the air volume control mechanism of the conditioned air that is blown to each of the air-conditioned rooms, so that the inspection service of the air volume controller in the branch chamber can be summarized. You can do it,
Only one inspection chamber is required for the inspection port. In addition, there is no restriction on the handling of the duct piping from the branch chamber to each air-conditioned room outlet.

[0014]

【Example】

Example 1. The first embodiment of the present invention will be described below. FIG. 1 shows the system of the separated duct type air conditioner of the first embodiment, where 1 is an air-conditioned region, 3 is an outlet for blowing out conditioned air to the air-conditioned region 1, and 5 is an air conditioner main body 11. A duct connecting the outlets 3, 13 is a damper provided at the outlet, 21 is a heat exchanger, 23 is a heat exchange sensor provided in the heat exchanger 21, 25
Is an indoor fan that blows conditioned air into the duct 5, 27 is a main body microcomputer provided in the air conditioner main body 11, 29 is a main body remote controller that operates the air conditioner main body, 30 is a main body rank switch, and 31 is a return port.

Next, the operation of the above configuration will be described. The air conditioning priority order is set in advance by the body rank switch 30 in the body remote controller 29 in each air-conditioned area. When the operation is started by the arbitrary plurality of main body remote controllers 29, the opening of the damper 13 of the operation start air-conditioned area 1 is prohibited, and the operation of the air-conditioned area 1 not started.
The residual air in the duct is discharged to the air-conditioned region 1 having the lowest priority of the inner rank (air conditioning priority) switch 30, and the temperature of the heat exchanger 21 is detected by the heat exchange sensor 23 to detect the temperature of the heat exchanger 21. When the temperature is above a certain temperature during heating and below a certain temperature during cooling, the damper 13 in the air-conditioned region 1 that was discharging residual air is closed, and the damper 13 in the air-conditioned region 1 that started operation is opened. Lift the ban on things. When all the air-conditioned regions 1 are operated, the damper 13 having the lowest air conditioning priority in all the air-conditioned regions 1 is opened to discharge the residual air in the duct.

FIG. 2 is a damper opening / closing control flowchart. Next, FIG. 2 below will be described. a. Detects the operation stop of each air-conditioned area. b. Close the damper in the controlled area to be operated. c. Open the damper of the unit with the lowest air-conditioning priority among the stopped dampers. When all dampers are in operation, the damper of the unit with the lowest air-conditioning priority among all dampers is opened. d. Detects the temperature of the indoor heat exchanger and sets the set temperature Th during heating.
When the temperature becomes higher, the damper in the air-conditioned region to be operated is opened when the temperature becomes lower than the set temperature Tc during cooling, and the damper of the stop unit is closed when there is a stop unit.

Embodiment 2. The second embodiment of the present invention will be described below. FIG. 3 shows the system of the separated duct type air conditioner of the second embodiment, and 33 is a compressor.

Next, the operation of the above configuration will be described. In the above-described first embodiment, a rank switch is provided at each outlet to discharge the residual air in the duct at the start of operation, thereby making it possible to configure an inexpensive system that suppresses a reduction in air conditioning efficiency. However, in the present embodiment, compression is performed at the start of operation. Even if the load is large, the rising time is not lengthened by increasing the capacity of the machine 33 and the air volume of the indoor blower 25. After the start of operation, the capacity of the compressor 33 and the air volume of the indoor blower 25 are increased from the normal time, and the bypass damper 9 is fully opened.
By fully closing the blowing damper 13, residual air in the duct 5 before the start of operation is discharged. The start of the operation is determined by detecting that the residual air is exhausted by the exhaust from the detection signals detected by the outlet temperature sensor 17 and the heat exchange sensor 23, the bypass damper is fully closed, and the outlet damper 13 is opened. The compressor 33 and the indoor blower 25 are operated normally.

FIG. 5 is a flow chart for controlling the opening / closing of the damper, the compression function, and the indoor fan air flow rate. FIG. 5 will be described. a. Detect the start of operation. b. Increases the compression function and indoor blower air volume. c. Open each bypass damper and close each outlet damper. d. Detects indoor heat exchange temperature and each outlet temperature. e. The damper in the air-conditioned region to be operated is opened according to the indoor heat exchange temperature and each outlet temperature, and the compression function and the indoor blower air volume are controlled normally.

Example 3. Embodiment 3 of the present invention will be described below with reference to the drawings. FIG. 6 is a conceptual diagram showing the construction of an air conditioner according to the third embodiment, and FIG. 7 is an external perspective view showing a branch chamber 19. In the figure, 49 is an air volume control chamber, 60 is a chamber suction port, and the indoor air conditioner body 4
It is a suction port for supplying the conditioned air blown from No. 1 into the chamber. A plurality of chamber outlets 50 are provided to distribute the conditioned air to each air-conditioned room 1. The indoor air conditioner body 41, the air volume control branch chamber 49, and the outlet 3 are connected by a duct 5 to form an air passage. An air volume control damper is provided inside the chamber outlet 50 and capable of fully closing the opening of the chamber outlet 50. A control electrical component box 2 that houses a damper drive motor 52 that is connected to an air volume control damper to open and close and drive the damper drive motor 52, and a motor control board 53 that controls the operation of the damper drive motor 52 on the side of each chamber outlet 50.
4 are installed. The air volume control branch chamber 49 is installed in the ceiling by using the hanging metal fittings 66 provided on the left and right side surfaces of the air volume control branch chamber 49 by the ceiling suspension bolts 65.

Next, the operation will be described. Each air-conditioned room 1
The air-conditioning operation switch 47 provided for the operation, stop, and set the room temperature. When the air-conditioning operation is instructed, the indoor air conditioner main body 41 and the outdoor air conditioner main body 44 are operated, the air in the room taken in by the suction grill set 68 is heat-exchanged, and the conditioned air is blown indoors. Device 25
Thus, the air is guided to the air volume control branch chamber 49 by the air passage formed by the duct 5. The damper drive motor 52 is driven by a signal from the motor control board 53 so that the conditioned air distributed to each air-conditioned room 1 reaches the air-conditioning set temperature set by the air-conditioning operation switch 47 when passing through the chamber outlet 50. As a result, the air volume control damper 51
Is opened and closed at the set position, and the air volume is controlled by the opening formed by the chamber outlet 50 and the air volume control damper 51. The conditioned air whose air volume has been controlled is blown into the conditioned room 1 from the outlet 3 via the duct 5.

Example 4. In the third embodiment described above, the motor control board 53 is installed on the side surface of each chamber outlet 50, but each motor control board 53 may be integrated to control each damper drive motor 52. In FIG. 8, 67 is an integrated control board, which is housed in a control board box 68 provided on the lower surface of the air volume control branch chamber 49.
The operation is controlled via the motor lead wire 69 to the chamber drive outlet 50 and the damper drive motor 52 provided in each. It goes without saying that the serviceability has been improved by providing the control board, which is downsized by integrating the control board and sharing the common part of the control circuit and having a high inspection order, on the lower surface.

[0023]

The separated duct type air conditioner of claim 1 is an inexpensive system in which the rank switch is set in the damper part of each air conditioning region, and the residual air in the duct is discharged to the air-conditioned region. It is possible to prevent a decrease in air conditioning efficiency. In the separated duct type air conditioner of claim 2, the compression functional force and the indoor blower air volume are increased at the start of operation to discharge the residual air in the duct, so that the start-up time is short and the decrease in air conditioning efficiency is suppressed. Can drive. In the branch chamber of the duct type air conditioner according to claim 3, since the air volume control mechanism which has been dispersed until now can be inspected and repaired at one place in the branch chamber portion by providing the air volume control mechanism in the branch chamber, Serviceability has also been improved, and there is no need to compromise the aesthetics of the ceiling because there is only one inspection point. Further, as a matter of course, it is not necessary to install the air volume control unit, and the installation time can be shortened. In addition, the duct piping can also be directly connected from the branch chamber to each air-conditioned room outlet, and until now, the duct piping is not restricted by the air volume control unit and the installation position of this inspection port, so the duct is bent more than necessary. Of course, the pressure loss can be minimized and the performance is improved, so that a highly practical effect can be obtained.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a separation-type duct type air conditioner according to a first embodiment of the present invention.

FIG. 2 is a damper control flowchart at the start of operation of the separation-type duct type air conditioner according to the first embodiment of the present invention.

FIG. 3 is a system configuration diagram of a separation type duct type air conditioner according to a second embodiment of the present invention.

[Fig. 4] Fig. 4 is a control block diagram at the start of operation of the separation-type duct type air conditioner according to Embodiment 2 of the present invention.

FIG. 5 is a damper control flowchart at the start of operation of the separation-type duct type air conditioner according to the second embodiment of the present invention.

FIG. 6 is a structural conceptual diagram showing a duct type air conditioner according to a third embodiment of the present invention.

FIG. 7 is an external perspective view showing a branch chamber according to a third embodiment of the present invention.

FIG. 8 is an external perspective view showing a branch chamber according to a fourth embodiment of the present invention.

FIG. 9 is a system configuration diagram of a conventional separation type duct type air conditioner.

[Explanation of symbols]

 1 Air-conditioned area 3 Air outlet 5 Duct 7 Corridor 11 Air conditioner body 13 Air outlet damper 15 Terminal microcomputer 17 Air outlet temperature sensor 19 Damper drive motor 21 Heat exchanger 23 Heat exchange sensor 25 Indoor fan 27 Main body microcomputer 29 Main body remote control 30 Rank (Air conditioning priority) switch 31 Return 33 Compressor 41 Indoor air conditioner 49 Air volume control branch chamber 50 Chamber outlet 51 Air volume control damper 52 Damper drive motor 53 Motor control board 67 Integrated control board 60 Chamber suction opening

Claims (3)

[Claims] 1. A refrigeration cycle in which a variable capacity compressor, a condenser, a throttle mechanism, and an evaporator are connected to each other, and an indoor unit is provided with a variable air volume blower, and the indoor unit and the blowout port are connected by a duct. Type air conditioner, an indoor heat exchanger temperature detecting means for detecting the temperature of the indoor heat exchanger, an outlet damper having a switch for setting the air conditioning priority for each individual outlet damper, and the indoor heat exchanger temperature. A separated duct type air conditioner, comprising: an operation start damper opening / closing determining means for determining the opening / closing of the damper at the start of operation in response to an output from the detecting means. 2. A separation system in which a refrigeration cycle in which a variable capacity compressor, a condenser, a throttle mechanism, and an evaporator are connected to each other and an indoor unit equipped with a variable air volume blower, and an indoor unit and an outlet are connected by a duct. Type air conditioner, an indoor heat exchanger temperature detecting means for detecting the indoor heat exchanger temperature, an indoor blowout temperature detecting means for detecting each indoor blowout temperature, each individual blowout port damper, and each individual bypass damper After the start of operation, whether the operation is started or not, the indoor blowout temperature detecting means, the damper open / close determining means for determining the opening / closing of each damper from the indoor heat exchanger temperature detecting means, the compression functional force varying means, and the indoor blower air volume varying means And a separate duct air conditioner. 3. A separate duct type air conditioner of a duct connection type having a heat exchanger and a blower, wherein a suction port of conditioned air blown from the air conditioner by a duct and a wake of the suction port. A plurality of air outlets for distributing conditioned air to each air-conditioned room, an air volume control damper provided at the air outlets, a drive motor connected to the air volume control damper on the side surface of the air outlet to open and close the damper, and this drive motor A branch chamber of a separation-type duct type air conditioner, comprising: