JPH11248196A - Fan coil unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fan coil unit easy of control of quantity of wind between each space to be air conditioned and the next and the static pressure. SOLUTION: In a fan coil unit which is equipped with a casing 1 and also supplies air to plural spaces to be air-conditioned by shunting air sucked into its inside, a heat exchanging room 5 provided with a heat exchange coil, and a plurality of shunts 6... leading to the heat exchanging room 5 are made within the casing 1. Each shunt 6 is provided with a blower 14 which sends air in the direction form the heat exchanger 5 to the shunt 6, and a damper mechanism D which prevents the reverse flow from the space to be air-conditioned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fan coil unit for individual air conditioning.

[0002]

2. Description of the Related Art When a plurality of conditioned spaces are individually air-conditioned by one air conditioner, the air conditioner and the plurality of conditioned spaces are connected by a duct, and a variable air volume (VAV) unit is provided at an outlet of each conditioned space. And air conditioning is provided.

[0003]

However, in this system, since only one blower is used, if the static pressure is controlled while changing the air volume in each air-conditioned space, the control device becomes complicated and the cost increases. is there. Then, an object of the present invention is to provide a fan coil unit which solves these problems.

[0004]

In order to achieve the above object, a fan coil unit according to the present invention comprises a casing and a fan for diverting the air sucked into the casing to supply air to a plurality of air-conditioned spaces. In the coil unit, in the casing, a heat exchange chamber provided with a heat exchange coil, and a plurality of branch channels communicating with the heat exchange chamber are formed. It is provided with a blower that circulates air in a direction toward the branch channel and a damper mechanism that prevents backflow from the space to be air-conditioned. Further, an opening / closing plate that swings open and is ventilated by blowing air from the blower is provided in the branch channel to constitute a damper mechanism, and the damper mechanism is disposed at the air inlet of the branch channel. Further, the cross section of the heat medium flow pipe of the heat exchange coil is formed in an elliptical shape.

[0005]

FIG. 1 is a simplified plan view showing an example of use of a fan coil unit according to the present invention. This fan coil unit F has a horizontally long box-shaped casing 1 and is sucked into the casing. The diverted air is supplied to a plurality of air-conditioned spaces V, V... Through the air supply ducts 2, 2,. Fan coil unit F and air supply ducts 2, 2, ...
Are provided in the ceiling, and the outlet 3 is provided at the tip of each duct 2. The air-conditioned space V is partitioned, for example, as indicated by a dotted line. Note that the outline arrows in all the drawings indicate the direction of air flow, and S
A indicates air supply, OA indicates outside air, and RA indicates return air.

As shown in FIGS. 2 to 4, a heat exchange chamber 5 and a plurality of branch channels 6, 6... Communicating with the heat exchange chamber 5 are formed in the hollow casing 1. A plurality of air supply ports 7 are formed at the front of the casing 1 to communicate with the branch flow path 6, and an outside air port 8 and a return air port 9 are formed at the rear face to communicate with the heat exchange chamber 5. The air supply port 7 is connected to the air supply duct 2, and the external air port 8 is connected to the external air duct 11.

The heat exchange chamber 5 is provided with a heat exchange coil 4, a drain pan 12, and a filter (not shown), and exchanges heat flowing from the return air port 9 and the outside air port 8. Each branch 6 includes a blower 14 for sending air in a direction from the heat exchange chamber 5 to the branch 6, a damper mechanism D for preventing backflow from the air-conditioned space V (see FIG. 1), and a sound deadening member 15. , Provided.

The damper mechanism D is provided with an opening / closing plate 17 which is opened and oscillated by the blower 14 as shown by a two-dot chain line in FIG. Opening / closing plate 1
7 is provided in a suspended manner via a hinge mechanism so as to swing about its one end edge (in the illustrated example, the upper end edge), and shuts off the branch flow path 6 by its own weight in a non-ventilated state, In the blowing state, the shunt is opened by swinging by the wind pressure. As described above, since the branch flow path 6 is opened and closed using the wind power, no extra power is required, and since it has a simple structure, it can be manufactured at low cost and does not require a large installation space.

The damper mechanism D is arranged at the air inlet (the base end in the air blowing direction) on the windward side of the branch channel 6, and the air blower 14 and the silencing member 15 are arranged on the leeward side thereof. Blowers 14, 14, ...
Are configured to be able to independently control the air volume and the static pressure, and individually control the air conditioning for each air-conditioned space V by the control switch 18 (see FIG. 1). At this time, even if any of the plurality of blowers 14, 14,.
Air is prevented from flowing into the branch channel 6 of the blower 14 that is being driven from the branch channel 6 of the blower 14 that has been stopped, and moreover, the air passes evenly over the entire surface of the heat exchange coil 4, thereby reducing the heat exchange capacity. Can be prevented. If the damper mechanism D is not provided, the air in the air-conditioned space V whose air supply has been stopped flows into another air-conditioned space. Therefore, when used in a hospital room, contaminated air flows into other hospital rooms. In the present invention, the contaminated air does not flow into the other air-conditioned spaces V, V...

As shown in FIG. 5, the heat exchange coil 4 is a plate fin coil, and forms a radially cut surface of the heat medium flow pipe 18 which is in contact with the air to be blown into an elliptical shape. It is most preferable that the major axis direction of the elliptical shape be substantially parallel to the blowing direction P in order to reduce the air resistance. As a result, the resistance when air passes through the heat exchange coil 4 is reduced, so that a rise in dynamic pressure can be prevented, and the air flow separation area called the dead water area indicated by the symbol F is reduced to reduce heat exchange loss. Here, the ellipse in the present invention includes an ellipse close to a rhombus and a so-called oval shape in which both short sides of a rectangle protrude outward. Further, the major axis direction refers to the direction of a straight line connecting the vertices of the major axis of the ellipse.

The above-mentioned fan coil unit F is of a horizontal type, but may be of a vertical type as shown in FIGS. In this case, the open / close plate 17 of the damper mechanism D is provided horizontally via a hinge mechanism so as to swing about one edge thereof, and shuts off the branch flow path 6 by its own weight in a non-blowing state in a closed state. ,
In the blowing state, the shunt channel 6 is opened by swinging upward by the wind pressure as shown by the two-dot chain line in FIG. Also,
Components having the same configuration as the previous embodiment (FIGS. 2 to 5) are denoted by the same reference numerals, and description thereof will be omitted.

The present invention is not limited to the above-described embodiment, and can be freely changed in design without departing from the gist of the present invention. Although not shown in the drawings, the position of the damper mechanism D in the branch channel 6 can be freely changed, and the configuration of the damper mechanism D can be freely changed. For example, the damper mechanism D can be configured by a mechanical drive or a shutter. . Further, the cross section of the heat medium flow pipe 18 may be formed in a shape other than an ellipse. The number of the branch channels 6 can be freely increased or decreased. The branch channels 6, 6,... Do not have to be arranged side by side. For example, a plurality of rows of branch channels 6, 6,.

[0012]

According to the first aspect of the present invention, the blower 14
Therefore, it is easy to control the air volume and the static pressure in each of the conditioned spaces V. There is no need to separately install an air conditioner in the plurality of air-conditioned spaces V, V. The contaminated air passes through the fan coil unit to other air-conditioned spaces V,
Since it does not flow into V ..., it can be used safely in hospital rooms.

According to the second aspect of the present invention, the structure of the damper mechanism D is simple and easy to manufacture, and the cost can be reduced.

According to the third aspect of the present invention, wind noise can be reduced, and low-noise operation becomes possible.

According to the fourth aspect of the present invention, the pressure loss in the heat exchange coil 4 can be reduced, and the running cost can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a simplified plan view showing one usage example of the present invention.

FIG. 2 is a partially cutaway plan view of an embodiment of the present invention.

FIG. 3 is a side view, partially broken away, of the embodiment of FIG. 2;

FIG. 4 is a front view showing the embodiment of FIG. 2;

FIG. 5 is a sectional view of a main part of a side surface of the heat exchange coil.

FIG. 6 is a front view showing another embodiment.

FIG. 7 is a side view showing the embodiment of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 5 Heat exchange chamber 6 Branch flow path 14 Blower 17 Opening / closing plate 18 Heat medium circulation pipe D Damper mechanism V Air-conditioned space P Blowing direction

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[Procedure amendment]

[Submission date] February 16, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Fan coil unit

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fan coil unit for individual air conditioning.

[0002]

2. Description of the Related Art When a plurality of conditioned spaces are individually air-conditioned by one air conditioner, the air conditioner and the plurality of conditioned spaces are connected by a duct, and a variable air volume (VAV) unit is provided at an outlet of each conditioned space. And air conditioning is provided.

[0003]

However, in this system, since only one blower is used, if the static pressure is controlled while changing the air volume in each air-conditioned space, the control device becomes complicated and the cost increases. is there. Then, an object of the present invention is to provide a fan coil unit which solves these problems.

[0004]

In order to achieve the above object, a fan coil unit according to the present invention comprises a casing and a fan for diverting the air sucked into the casing to supply air to a plurality of air-conditioned spaces. In the coil unit, in the casing, a heat exchange chamber provided with a heat exchange coil, and a plurality of branch channels communicating with the heat exchange chamber are formed. a blower for circulating the air in a direction toward the branch passage, the damper mechanism to prevent backflow from the object to be air-conditioned space, provided, this damper mechanism
Is swung open by the air blower,
The opening and closing plate to be provided is provided in
Is suspended in such a way that it swings around its one edge.
In the non-blowing state, the above-mentioned branch flow path is shut off by its own weight in a closed state.
When the air is blown, it oscillates by the wind pressure to open the branch channel.
It is configured so that Alternatively, this opening / closing plate
It is provided horizontally so that it swings around one edge,
In the wind state, the above-mentioned branch flow path is closed in a closed state by its own weight,
Swings upward by the wind pressure to open the branch
And so on. In addition, the blowers are
Volume and static pressure can be controlled.
The key is controlled. Further, the cross section of the heat medium flow pipe of the heat exchange coil is formed in an elliptical shape.

[0005]

FIG. 1 is a simplified plan view showing an example of use of a fan coil unit according to the present invention. This fan coil unit F has a horizontally long box-shaped casing 1 and is sucked into the casing. The diverted air is supplied to a plurality of air-conditioned spaces V, V... Through the air supply ducts 2, 2,. Fan coil unit F and air supply ducts 2, 2, ...
Are provided in the ceiling, and the outlet 3 is provided at the tip of each duct 2. The air-conditioned space V is partitioned, for example, as indicated by a dotted line. Note that the outline arrows in all the drawings indicate the direction of air flow, and S
A indicates air supply, OA indicates outside air, and RA indicates return air.

As shown in FIGS. 2 to 4, a heat exchange chamber 5 and a plurality of branch channels 6, 6... Communicating with the heat exchange chamber 5 are formed in the hollow casing 1. A plurality of air supply ports 7 are formed at the front of the casing 1 to communicate with the branch flow path 6, and an outside air port 8 and a return air port 9 are formed at the rear face to communicate with the heat exchange chamber 5. The air supply port 7 is connected to the air supply duct 2, and the external air port 8 is connected to the external air duct 11.

The heat exchange chamber 5 is provided with a heat exchange coil 4, a drain pan 12, and a filter (not shown), and exchanges heat flowing from the return air port 9 and the outside air port 8. Each branch 6 includes a blower 14 for sending air in a direction from the heat exchange chamber 5 to the branch 6, a damper mechanism D for preventing backflow from the air-conditioned space V (see FIG. 1), and a sound deadening member 15. , the provision.

The damper mechanism D is provided with an opening / closing plate 17 which is opened and oscillated by the blower 14 as shown by a two-dot chain line in FIG. Opening / closing plate 1
7 is provided in a suspended manner via a hinge mechanism so as to swing about one end edge (in the illustrated example, the upper end edge), and shuts off the branch flow path 6 by its own weight in a non-ventilated state, In the blowing state, the shunt is opened by swinging by the wind pressure. As described above, since the branch flow path 6 is opened and closed using the wind power, no extra power is required, and since it has a simple structure, it can be manufactured at low cost and does not require a large installation space.

The damper mechanism D is arranged at the air inlet (the base end in the air blowing direction) on the windward side of the branch channel 6, and the air blower 14 and the silencing member 15 are arranged on the leeward side thereof. Blowers 14, 14, ...
Are configured to be able to independently control the air volume and the static pressure, and individually control the air conditioning for each air-conditioned space V by the control switch 18 (see FIG. 1). At this time, even if any of the plurality of blowers 14, 14,.
Air is prevented from flowing into the branch channel 6 of the blower 14 that is being driven from the branch channel 6 of the blower 14 that has been stopped, and moreover, the air passes evenly over the entire surface of the heat exchange coil 4, thereby reducing the heat exchange capacity. Can be prevented. If the damper mechanism D is not provided, the air in the air-conditioned space V whose air supply has been stopped flows into another air-conditioned space. Therefore, when used in a hospital room, contaminated air flows into other hospital rooms. In the present invention, the contaminated air does not flow into the other air-conditioned spaces V, V...

As shown in FIG. 5, the heat exchange coil 4 is a plate fin coil, and forms a radially cut surface of the heat medium flow pipe 18 which is in contact with the air to be blown into an elliptical shape. It is most preferable that the major axis direction of the elliptical shape be substantially parallel to the blowing direction P in order to reduce the air resistance. As a result, the resistance when air passes through the heat exchange coil 4 is reduced, so that a rise in dynamic pressure can be prevented, and the air flow separation area called the dead water area indicated by the symbol F is reduced to reduce heat exchange loss. Here, the ellipse in the present invention includes an ellipse close to a rhombus and a so-called oval shape in which both short sides of a rectangle protrude outward. Further, the major axis direction refers to the direction of a straight line connecting the vertices of the major axis of the ellipse.

The above-mentioned fan coil unit F is of a horizontal type, but may be of a vertical type as shown in FIGS. In this case, the open / close plate 17 of the damper mechanism D is provided horizontally via a hinge mechanism so as to swing about one edge thereof, and shuts off the branch flow path 6 by its own weight in a non-blowing state in a closed state. ,
In the blowing state, the shunt channel 6 is opened by swinging upward by the wind pressure as shown by the two-dot chain line in FIG. Also,
Components having the same configuration as the previous embodiment (FIGS. 2 to 5) are denoted by the same reference numerals, and description thereof will be omitted.

The present invention is not limited to the above-described embodiment, and can be freely changed in design without departing from the gist of the present invention. Respectively shown omitted, changes in the position of the damper mechanism D in in the branch passage 6 is freely. Furthermore, the heat medium flow pipe 1
The section 8 may be formed in a shape other than an ellipse. The number of the branch channels 6 can be freely increased or decreased. The branch channels 6, 6,... Do not have to be arranged side by side. For example, a plurality of rows of branch channels 6, 6,.

[0013]

According to the first to fourth aspects of the present invention, the blowers are individually provided.
14, the control of the air volume and static pressure of each air-conditioned space V
Easy. Air conditioners individually for a plurality of air-conditioned spaces V, V ...
It is not necessary to install the slab, and the cost can be reduced. Contaminated
The air that has flowed through the fan coil unit
Because it does not flow into V, V…, it can be used safely in hospital rooms
Wear. The structure of the damper mechanism D is simple and easy to manufacture,
Cost can be reduced. Further, in the invention of claims 3 and 4,
Can be individually air-conditioned for each air-conditioned space V. further,
According to the invention of claim 4, the pressure loss in the heat exchange coil 4 is reduced.
And running costs can be greatly reduced.
You.

[Brief description of the drawings]

FIG. 1 is a simplified plan view showing one usage example of the present invention.

FIG. 2 is a partially cutaway plan view of an embodiment of the present invention.

FIG. 3 is a side view, partially broken away, of the embodiment of FIG. 2;

FIG. 4 is a front view showing the embodiment of FIG. 2;

FIG. 5 is a sectional view of a main part of a side surface of the heat exchange coil.

FIG. 6 is a front view showing another embodiment.

FIG. 7 is a side view showing the embodiment of FIG.

[Description of Signs] 1 Casing 5 Heat exchange chamber 6 Branch flow path 14 Blower 17 Opening / closing plate 18 Heat medium flow pipe D Damper mechanism V Air-conditioned space P Blowing direction

Claims (4)

[Claims] 1. A fan coil unit having a casing 1 and diverting air sucked into the casing 1 to supply air to a plurality of conditioned spaces V. A heat exchange coil 4 is provided in the casing 1. Forming a heat exchange chamber 5 provided therein and a plurality of branch channels 6 communicating with the heat exchange chamber 5;
Each branch 6 is provided with a blower 14 for sending air in a direction from the heat exchange chamber 5 to the branch 6 and a damper mechanism D for preventing backflow from the air-conditioned space V. Fan coil unit. 2. The fan coil unit according to claim 1, wherein an opening / closing plate (17) for swinging open by a blower (14) to be in a ventilated state is provided in the branch channel (6) to constitute a damper mechanism (D). 3. The fan coil unit according to claim 1, wherein the damper mechanism D is disposed at an air inlet of the branch channel 6. 4. The fan coil unit according to claim 1, wherein the cross section of the heat medium flow pipe of the heat exchange coil is formed in an elliptical shape.