JPH04288422A - Duct type air conditioner - Google Patents

Abstract

PURPOSE:To greatly increase variable range of air volume without using change gears like inverter, etc., different from a conventional air conditioner of this type which needs mounting of change gears like interver, etc., for wide veriable range of air volume to separately control air conditioning of a plurality of rooms. CONSTITUTION:Each blower 3, 3a in an air conditioner body 1 is provided with reverse flow prevention shutter 6, 6a at discharge opening 5, 5a thereof. Indoor suction opening 7 of return air from each room is connected to a plurality of indoor blow-out ports 17-21 in rooms through a blow-out duct 11 in the body 1, and air volume adjusting damper 12-16 which control air volume to each room by remote control are provided midway in each blow-out duct 11-11b. Operation is performed so that air volume corresponds to the total of opening of each indoor blow-out port 17-21, combining ability of each blower 3, 3a corresponding to opening and closing of each air volume adjusting damper 12-16.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct type air conditioner for heating and cooling houses, etc.

0002

BACKGROUND OF THE INVENTION In recent years, houses have become larger and the number of rooms has tended to increase, and there has been a desire for more comfortable air conditioning.

[0003] There is a tendency to install duct type air conditioners in such houses, and this type of conventional duct type air conditioner will be explained below.

As shown in FIG. 3, a heat exchanger 102 is installed inside a main body 101 of a duct type air conditioner.
Correspondingly, fans 103 and 10 are installed on the same axis of the motor 104.
At the back of the air blower 105 and the main body 101, there is a main body suction port 109 that sucks indoor air that has passed through the suction duct 108 from the indoor suction port 107, and the main body 1
In front of 01, there are a plurality of indoor air outlets 113, 113a (two in FIG. 3) corresponding to each room via air ducts 111, 111a from the main body air outlets 110, 110a, respectively.
is connected to the main body 101, and the blower 10 is connected to the main body 101.
A remote control 114 is connected to control the unit 5.

[0005] Conventionally, this type of duct type air conditioner is intended for only one room, so the indoor air outlet 113, 113
In the case of a large room, a is installed in the same room. In other words, there are 10 indoor suction ports for one duct type air conditioner.
There was only one air outlet 7 and one or two indoor air outlets 13, 113a, and the range of change in air volume during air conditioner operation was relatively small. Therefore, the ability of the blower of the duct type air conditioner has been changed to two or three levels, which is sufficient to accommodate the change in capacity.

[0006]

[Problems to be Solved by the Invention] In contrast to the conventional duct type air conditioner having the above configuration, it is difficult to air condition multiple rooms with a single duct type air conditioner 101 and to perform individual control. If this were to be done, it would be necessary to have a very wide variable range of air volume, which would require equipping a transmission device such as an inverter and connecting ducts across multiple rooms to perform air conditioning in multiple rooms. Therefore, in order to operate these various transmission devices, the control becomes complicated, and if the transmission device is an inverter or the like, it is very expensive, resulting in an increase in the price of the air conditioner itself.

The present invention solves the above-mentioned problems, and provides a duct type air conditioner that can have a very wide variable range of air volume without using a transmission device such as an inverter, and can be controlled with an inexpensive device. is intended to provide.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a heat exchanger inside the main body of an air conditioner and a plurality of blowers for heat exchange of the heat exchanger, and each of the blowers has a plurality of heat exchangers. The discharge port is provided with a backflow prevention shutter, and the main body is provided with a backflow prevention shutter.
A blowout duct connects the return air inlet from each room to a plurality of indoor air outlets in each room, and an air volume adjustment damper is installed in the middle of each of the air ducts to control the air volume by a remote device into each room. and each of the blowers is configured to operate in accordance with the opening and closing of each of the air volume adjustment dampers so that the capacity of each of the blowers is combined to produce an air volume that corresponds to the total opening degree of each indoor air outlet. It is.

[0009]

[Operation] According to the above-described structure, the present invention combines the capacity of each blower with a large number of air volume switches, so that each blower is operated in accordance with the opening degree of the air volume adjustment damper corresponding to each indoor air outlet, and the inverter is operated. It is possible to greatly expand the variable range of air volume of a duct type air conditioner without using a transmission device such as the above.

0010

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in FIG. 1, inside the main body 1 of the duct type air conditioner, there is a heat exchanger 2, a plurality of independent blowers 3, 3a corresponding to the heat exchanger 2, and the blower 3. , 3a connected to the motors 4, 4a, and each of the blowers 3
, 3a are provided with backflow prevention shutters 6, 6a which can be freely opened and closed by wind pressure from the discharge ports 5, 5a, and an indoor suction port 7 is provided at the rear of the main body 1.
The main body suction port 9 sucks indoor air that has passed through the suction duct 8 from the main body, and in the front of the main body 1 there are a plurality of (three in FIG. 1) main body blow-off ports 10, 10a, and 10b, respectively, and air outlet ducts 11, 11a, and 11b. A plurality of (five locations in FIG. 1) air volume adjustment dampers 12, 13, 14, 15, 16 and an indoor air outlet 17 are arranged toward each room.
18, 19, 20, and 21 are connected to each of the air volume adjustment dampers 12, 13, 14, 15, and 16, respectively. ,25,
26 are connected. Further, the remote controllers 22, 23
, 24, 25, 26 are air volume adjustment dampers 12, 13, 14
, 15, 16 can be switched in several stages.

In the above configuration, each indoor air outlet 17, 1
Each remote control 22, 23 corresponding to 8, 19, 20, 21
, 24, 25, 26, each air volume adjustment damper 12, 13
, 14, 15, and 16 in several stages including fully open and fully closed.

[0013] Therefore, if the required air volume at the indoor air outlet 17 is 200 m3/h for strong and 100 m3/h for weak, then all the indoor air outlets 17, 18, 19, 20, 21
When it is strong, it will be 1,000 m3/h because it covers 5 rooms, and if only one indoor air outlet 17 is weak and the other four indoor air outlets are closed, it will be 100 m3/h. Become. Further, when all five indoor air outlets 17 are closed (stopped), the air flow rate becomes 0 m3/h. That is, the blower 3, 3a of the main body 1
is 100m3/h from 0m3/h to 1,000m3/h
This means that the air volume can be changed in 10 ways in increments. A plurality of (two in FIG. 1) provided inside the main body 1
If the blower 3, 3a is equipped with two motors 4, 4a having exactly the same ability of 5-stage notch switching, then 1
By the combination of the first blower 3 and the second blower 3a, each remote control 22, 23, 24, 25
, 26, the air volume can be changed in 10 ways.

[0014]

[Table 1]

A plurality of (two in FIG. 1) blowers 3, 3a
If either of them is stopped, the backflow prevention shutter 6 or 6a of the stopped blower 3 or 3a closes due to the wind pressure of the operating blower to prevent backflow.

Next, the capacities of the blowers 3 and 3a are not made the same,
By combining the blowers with different capacities, each blower 3, 3a can change the air volume in 10 steps by switching the notch in 3 steps, as shown in Table 2.

[0017]

[Table 2]

According to the embodiment of the present invention, the air volume of the duct type air conditioner can be varied without using a speed change device such as an inverter. , 3a can be greatly expanded and controlled.

[0019]

As is clear from the above embodiments, according to the present invention, a transmission device such as an inverter is used by controlling a combination of blowers of the same capacity or different capacities that have several levels of capacity switching. The variable range of the air volume of a duct type air conditioner can be greatly expanded without any problems, and an inexpensive control device that can perform fine air volume control can be obtained. Furthermore, a backflow prevention shutter is installed on the discharge side of the blower, so if you forget to close each air volume adjustment damper, the conditioned air in that room will not escape, and this duct type air conditioner can prevent backflow from inside the room. can be provided.

[Brief explanation of the drawing]

[Fig. 1] A plan view showing the configuration of a duct type air conditioner according to an embodiment of the present invention.

[Figure 2] Cross-sectional view of the same duct type air conditioner

[Figure 3] Plan view showing the configuration of a conventional duct type air conditioner

[Explanation of symbols]

1 Main body 2 Heat exchanger 3,3a　Blower 5, 5a Discharge port 6, 6a　Backflow prevention shutter 7 Indoor suction port 11, 11a, 11b Blowout duct

Claims (1)

[Claims] 1. A heat exchanger and a plurality of blowers for heat exchange of the heat exchanger are provided inside the main body of the air conditioner, a backflow prevention shutter is provided at the discharge port of each of the blowers, and the main body is provided with a backflow prevention shutter. , an air volume adjustment device that connects an indoor suction port for return air from each room and a plurality of indoor air outlets in each room with a blow-off duct, and controls air volume by remote control into each room in the middle of each blow-off duct. A damper is provided, and each of the blowers is operated so that the capacity of each blower is combined in response to the opening and closing of each of the air volume adjustment dampers to produce an air volume that corresponds to the total opening degree of each indoor air outlet. The configured duct type air conditioner.