JPH07190412A - Duct air conditioner - Google Patents

Abstract

PURPOSE:To provide a duct air conditioner wherein conditioned air different in the temperature and moisture conditions can be supplied by a single air conditioner, and air-conditioning matched to the state of respective parts in a building can be performed. CONSTITUTION:A duct air conditioner 1 is provided with a hot mater circulating/supplying means 41, a refrigerant circulating/supplying means 43, a coil unit 9 for receiving circulated and supplied hot water and refrigerant from these means, and producing conditioned air by transmitting the heat to air, a plurality of ducts 7 for distributing the conditioned air to respective parts in the building, and an air flowing means 6 for allowing air in the device to flow. Hot water coils 11 in the coil unit 9, refrigerant coils 21 and air passages are distributed in a plurality of blocks 51, 52, 53 facing a plurality of ducts, and the air- conditioning state can be selected by respective blocks.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct air conditioner for supplying air, the temperature and humidity of which are adjusted, to various parts of a room through a duct. In particular, the present invention relates to a duct air conditioner capable of supplying adjusted air having different temperature / humidity conditions with a single unit and performing air conditioning in accordance with the conditions of various indoor parts.

[0002]

2. Description of the Related Art FIG. 2 is a diagram showing a system outline of a duct air conditioner. Most of the system is located above the ceiling. The indoor air passes through the suction grill 45 (which is arranged on the ceiling of the corridor or the like) and passes through the coil unit 9
Is sucked into the coil unit 9 through the suction port 10. In the coil unit 9, a hot water coil 11 and a refrigerant coil 2 are provided.
1 and 1 are arranged, heat exchange is performed with the air flowing through the coil, and conditioned air whose temperature and humidity are adjusted is obtained.

Conditioned air flows from the coil unit 9 to the duct 7
Through the blowout grill 3 into each room. The blowout grill 3 is provided on one surface of the blowout chamber 2. A fan unit 5 having a fan 6 is installed in front of the blowout chamber 2 and causes air in the duct air conditioning system to flow.

FIG. 3 is a diagram showing the internal structure of a conventional coil unit. A refrigerant coil 21 and a hot water coil 11 are installed in the coil unit 9 from the upstream side of the air flow so as to cross the flow path. Both coils have a structure in which a long pipe with a small diameter is wound, and air flows through the coils (between the pipes), at which time the air is cooled or heated.

The refrigerant supplied from the refrigerant circulation supply device 43 (on the right in FIG. 2) to the refrigerant coil 21 is so-called refrigerant such as chlorofluorocarbon, cold water at 7 ° C. (produced by an absorption-type cold / hot water generator), and the like. . Hot water circulation supply device 41 to hot water coil 1
The hot water supplied to No. 1 is hot water of about 60 ° C. The supply amounts of the hot water and the refrigerant are controlled by the electrically operated valves 17 and 27 that can be quantitatively controlled. When the refrigerant is cold water, hot water flows through the refrigerant coil during heating, and cooling and heating can be performed with one coil. However, the hot water coil 11 is required as hot water for reheating at the time of dry and hot water for heating in an intermediate period between the cooling / heating switching times.

The air conditioning operation in the conventional duct air conditioner shown in FIGS. 2 and 3 will be described. First, there are three operation modes: heating, cooling, and dry. In the case of heating by the refrigerant system, water is passed only through the hot water coil 11,
In the case of the cold / hot water system, this is an operation mode in which hot water flows through the refrigerant coil 21. Cooling is an operation mode in which water (medium) is passed only to the refrigerant coil 21. Dry, refrigerant coil 2
This is an operation mode in which water (medium) is passed through both 1 and the hot water coil 11 to remove the water content of the air in the refrigerant coil 21 and then the hot water coil 11 heats it to an appropriate temperature. Conventionally, this operation mode can be selected only once for the entire duct air conditioner.

The temperature control of each room is automatically performed by a thermo switch 47 arranged in each room.
Specifically, the fan unit 5 is controlled by the thermoswitch 47. For example, the fan unit 5 has the modes of strong / medium / weak / stop, room temperature and thermo switch 4
The fan unit 5 is controlled according to the temperature difference from the temperature of the fan unit 5. For humidity control, there is also a method of mounting a humidity sensor near the return air intake of the coil unit 9 to control the humidity during dry operation.

[0008]

In the conventional duct air conditioner described above, only one operation mode can be selected,
It was not possible to operate by changing the operation mode for each room (or for each room in each group). However, this was not possible, for example, when it was desired to perform cooling in the south room and dry operation in the north room in summer.

According to the present invention, one unit is provided with a plurality of different temperatures.
The present invention relates to a duct air conditioner that can supply adjusted air for humidity conditions and can perform air conditioning according to the conditions of various parts inside a room.

[00010]

A duct air conditioner of the present invention receives hot water and a refrigerant circulating supply from a hot water circulating supply means, a refrigerant circulating supplying means, a hot water circulating supplying means and a refrigerant circulating supplying means, and these A duct air conditioner comprising: a coil unit that transfers heat to air to generate regulated air; a plurality of ducts that distribute the regulated air to indoor parts; and an air flow unit that causes the air in the coil unit and the duct to flow. There is a feature that the hot water coil, the refrigerant coil, and the air flow path in the coil unit are divided into a plurality of blocks corresponding to a plurality of ducts, and it is possible to select the air adjustment state for each block. And

[0011]

The basic roles of the hot water circulating supply means, the refrigerant circulating supply means, the coil unit, etc. are the same as in the duct air conditioner of the prior art described above. However, since the hot water coil, the refrigerant coil, and the air flow path in the coil unit are divided into a plurality of blocks corresponding to a plurality of ducts, the ON / OFF state of the refrigerant / hot water and the flow rate of each block may be changed. If this is done, conditioned air with different temperature and humidity conditions can be generated in one coil unit.

[0012]

EXAMPLES Examples of the present invention will be described below. Figure 1
It is a figure which shows the outline | summary of the duct air conditioner which concerns on the Example of this invention. The air whose temperature and humidity are adjusted is the coil unit 9
It enters into the coil unit 9 from the suction port 10 (right side in the drawing), passes through the refrigerant coil 21 and the hot water coil 11, passes through the duct 7, and is supplied into each room from the blowout grill 3 of the blowout grill chamber 2. . The fan 6 in the fan unit 5 causes the air in the air flow path to flow. The position of the fan is not limited to the position shown in the drawing, and may be arranged in the middle of the duct 7 or in the coil unit (inlet side, outlet side) for each duct or collectively.

In the coil unit 9 of this embodiment, the inside is divided into three by partition plates 31 and 31 '(first block 51, second block 52, third block from the top in the vertical direction in the drawing). Each block independently has a hot water coil 11, 11'11 "and a refrigerant coil 21,
21 ′, 21 ″ are arranged. Each coil has an electrically operated valve 17, 27 capable of independently controlling the flow rate of water (medium).
Are arranged. In addition, in FIG. 1, the second and third
Regarding the block, illustration of the tip of the duct and the hot water refrigerant pipe is omitted.

In the duct air conditioner of this embodiment,
For example, the first block 51 is operated in a cooling operation mode in which only the refrigerant coil 21 is passed through, and the second block 52 is
Water (medium) can be passed through both the refrigerant coil 21 ′ and the hot water coil 11 ′ to perform an appropriate temperature dry operation (referred to as amenity dry).

In FIG. 1, one coil unit block corresponds to one duct, but the present invention is not limited to this. One coil unit block may be branched after the coil unit exit portion to correspond to a plurality of ducts (for example, north and south of the room).

[0016]

As is apparent from the above description, the duct air conditioner of the present invention has a hot water coil in a coil unit,
The refrigerant coil and the air flow path are divided into a plurality of blocks corresponding to a plurality of ducts, and it is possible to select the air adjustment state for each block, so one unit can adjust a plurality of temperature and humidity conditions. Air can be supplied, and air conditioning can be performed according to the conditions of each indoor part.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a duct air conditioner according to an embodiment of the present invention.

FIG. 2 is a diagram showing a system outline of a duct air conditioner.

FIG. 3 is a diagram showing an internal structure of a conventional coil unit.

[Explanation of symbols]

1 Duct Air Conditioner 2 Outlet Chamber 3 Outlet Grill 5 Fan Unit 6 Fan 7 Duct 9 Coil Unit 10 Suction Port 11 Hot Water Coil 13 Hot Water Flow Pipe 15 Hot Water Return Pipe 17 Hot Water Motor Valve 21 Refrigerant Coil or Cold Water Coil 23 Refrigerant Flow Pipe 25 Refrigerant Return Pipe 27 Refrigerant Motorized Valve 31 Partition Plate 41 Hot Water Circulation Supply Means 43 Refrigerant Circulation Supply Means 51 First Block 52 Second Block 53 Third Block

Claims (1)

[Claims] 1. A coil for receiving circulated supply of hot water and a refrigerant from the hot water circulation supply means, the refrigerant circulation supply means, and the hot water circulation supply means and the refrigerant circulation supply means, and transmitting the heat of these to the air to generate conditioned air. A duct air conditioner comprising: a unit; a plurality of ducts for distributing regulated air to indoor parts; and a coil unit and an air flow means for flowing air in the duct; a hot water coil and a refrigerant coil in the coil unit. And the air flow path is divided into a plurality of blocks corresponding to a plurality of ducts, and an air adjustment state can be selected for each block.