JPH0754754Y2 - Underfloor air conditioning blower - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor air conditioning blowing device arranged on a floor panel in an underfloor air conditioning system.

[0002]

2. Description of the Related Art Recently, in office buildings and the like, a space is formed under the floor, and warm air or cold air is supplied to the space, and the warm air or cold air is supplied to the room from an outlet formed on the floor surface. Underfloor air conditioning is used to squirt air out of the room. FIG. 14 shows a conventional underfloor air conditioning system. In this system, warm air or cold air from the air conditioner 11 passes through a double floor space 15 formed under the floor panel 13 and is used for underfloor air conditioning system. The air is ejected from the outlet 17 into the room 19,
Is being air-conditioned.

In such an underfloor air conditioning system, a blowout grill (not shown) is generally arranged at the blowout port 17. Conventionally, the following three methods are mainly known as blowing methods in such an underfloor air conditioning system. A method in which a duct is directly connected to the outlet grill to supply air.

[0006] A method of pressurizing the air in the double floor without connecting a duct and using the difference in air pressure between the floor and the room to supply air (static pressure difference type method). In addition to the pressure of the air in the double bed (static pressure difference), the pressure (dynamic pressure) of the flow is used to supply air (total pressure type). Here, in the static pressure difference utilization type method, since the static pressure difference is used as the driving force, it is necessary to keep the static pressure in the floor uniform. For this reason, (a) increase the height of the double floor Reduce the effect of dynamic pressure. (B) Provide a structure for controlling the air flow in the double bed. (C) A damper for adjusting pressure is provided in the air intake portion of the blowout grill. It is necessary to take measures such as

On the other hand, in the total pressure type system, in addition to the pressure (static pressure difference) of the air in the double bed, the pressure (dynamic pressure) of the flow is used to supply air. On the other hand, in the double bed, the distribution of the total pressure is relatively uniform as compared with the distribution of the static pressure or the dynamic pressure, so that the system utilizing the total pressure can obtain a more uniform air flow rate. That is, in general, in an underfloor air-conditioning system that has a floor pressure outlet that uses a total pressure, it is easy to balance the blown air volume even if the height of the double floor is lowered, thus saving floor height and living The height of the space can be secured.

However, in such an underfloor air-conditioning system using the full pressure, as shown in FIG. 15, when the outlet is constructed, the flow F of the air flow in the double floor is increased.
There is a problem in that the airflow inlet 23 of the blowing device 21 needs to be opened according to the flow F of the airflow by accurately predicting or measuring That is, since the inside of the double floor is generally used for power supply, wiring for communication, etc., when wiring is added or its route changes, the airflow condition in the floor changes accordingly, and the airflow changes each time. Intake port 23
There was a problem that it was necessary to re-install the direction.

The applicant of the present application has previously filed an underfloor air conditioning blowout device as shown in FIGS. 16 and 17 as an underfloor air conditioning blowout device. That is, this underfloor air conditioning blowing device is an underfloor air conditioning blowing device in which the blowing grille 25 is arranged in the opening formed in the floor panel 13, and below the blowing grille 25, the air intake port is formed on the side surface. An airflow intake member 29 having 27 is arranged, and this airflow intake member 29 is attached to the outlet grill 25 and the outlet grill 25.
It is supported so as to be rotatable relative to the central axis of the.

In such an underfloor air-conditioning blowing device, the airflow intake member 2 supported by the blowing grille 25.
Since 9 is rotated and the opening direction of the airflow intake 27 is automatically changed according to the flow of the airflow, the conditioned air can be reliably supplied to the airflow intake member 29.

[0009]

However, in such a conventional underfloor air conditioning blowing device, the conditioned air that has flowed into the airflow intake member 29 from the airflow intake port 27 remains in the room through the blowout grill 25. Therefore, there is a problem that when the strength of the airflow flowing in the underfloor space changes, the amount of conditioned air flowing into the room changes accordingly.

The present invention has been made in order to solve such a conventional problem, and it is possible to maintain the amount of conditioned air flowing into the room from the blowout grill substantially constant even when the strength of the airflow changes. An object is to provide an underfloor air conditioning blowing device.

[0011]

An underfloor air conditioning blowing device according to claim 1 is an underfloor air conditioning blowing device in which a blowing grill is arranged in an opening formed in a floor panel. An air flow intake member having an air flow intake port on a side surface thereof, and the air flow intake member is supported by the air outlet grill so as to be relatively rotatable about the central axis of the air outlet grill, and An air volume adjusting mechanism that automatically increases or decreases the opening area of the airflow intake port is arranged at the intake port according to the strength of the airflow.

The underfloor air-conditioning blowing device according to a second aspect of the present invention is the under-floor air conditioning blowing device according to the first aspect, wherein the air flow rate adjusting mechanism is horizontally rotatably disposed at a side end portion of the airflow intake port, and is located at the airflow intake port side. The damper member has a rotating member on which a flap member is formed on the outside, and an urging mechanism for urging the damper member toward the inside of the airflow intake member. The underfloor air conditioning blowing device according to claim 3 is an underfloor air conditioning blowing device in which a blowing grill is arranged in an opening formed in a floor panel, wherein an air intake port is provided on a side surface below the blowing grill. An airflow intake member having is disposed, the airflow intake member is supported on the blowout grill so as to be relatively rotatable about the center axis of the blowout grill, and the airflow flowing in from the airflow intake port, An air volume adjusting mechanism that reflows into the underfloor space according to the strength of the airflow is arranged.

An underfloor air-conditioning blowing device according to a fourth aspect is the underfloor air conditioning blowing device according to the third aspect, wherein the air flow rate adjusting mechanism is horizontally rotatably arranged at a side end portion of the airflow intake port, and the inner surface is provided with the airflow intake port. A container-shaped flap member opened in the member,
A flap-side opening that is opened on the bottom surface of the flap member, a biasing mechanism that biases the flap member toward the outside, and a flap-side opening that is superposed on the flap-side opening portion on the bottom surface of the airflow intake member. And a main body side opening.

[0014]

[Operation] In the underfloor air-conditioning blowing device according to claim 1, the opening area of the airflow intake is automatically increased or decreased by the airflow adjusting mechanism according to the strength of the airflow, thereby changing the strength of the airflow. Even when it does, the amount of conditioned air flowing into the room from the blowout grill is maintained substantially constant.

In the underfloor air-conditioning blowing device of the present invention, when the air flow is weak, the force pressing the flap member is weak, so that the damper member is sufficiently biased toward the inside of the air intake member by the biasing mechanism. As a result, the opening area of the airflow intake is increased. On the other hand, when the airflow is strong,
Since the force pressing the flap member is strong, rotation of the flap member causes the damper member to sufficiently move toward the airflow inlet side against the force of the biasing mechanism, and the opening area of the airflow inlet is reduced. Get smaller.

In the underfloor air-conditioning blowing device of the third aspect, the amount of air flow re-outflowed to the underfloor space is automatically increased or decreased by the air volume adjusting mechanism according to the intensity of the air flow. Even when is changed, the amount of conditioned air flowing into the room from the outlet grill is maintained substantially constant. In the underfloor air conditioning blowing device according to claim 4,
When the air flow is weak, the force pressing the flap member is weak, so the opening side of the flap member is pulled sufficiently toward the outside of the air flow intake member by the biasing mechanism, and the main body side opening and the flap side opening The overlapping area with and becomes smaller, and the amount of conditioned air that reflows from the airflow intake member becomes smaller.

On the other hand, when the flow of the air flow is strong, the force for pressing the flap member is strong. Therefore, the rotation of the flap member causes the flap member to sufficiently resist the force of the urging mechanism toward the air flow intake port side. The overlapped area between the main body side opening and the flap side opening becomes large, and the amount of conditioned air that reflows from the airflow intake member becomes large.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 4 show an embodiment of an underfloor air-conditioning blowing device of the present invention, in which reference numeral 31 denotes a blowing grill arranged at an opening formed in a floor panel.

Below the outlet grill 31, an upper surface 33 is provided.
An airflow intake member 35 having an opening communicating with the blowout grill 31 is arranged therein. This air flow intake member 35
Is supported by the outlet grill 31 so as to be relatively rotatable about the central axis of the outlet grill 31. That is,
In this embodiment, as shown in FIG. 5, a bearing portion 39 is formed at the lower end of the center member 37 of the blow-out grill 31, while the bottom surface 41 of the airflow intake member 35 projects upward. One end of the support shaft 43 is fixed.

A disk-shaped support plate 45 is formed on the upper end of the support shaft 43. And this support plate 45
Is supported by a bearing (not shown) housed in the bearing 39 for rotation in the thrust direction and the radial direction. The airflow intake member 35 has a substantially rectangular container shape, and has a rectangular airflow intake port 47 on its side surface.
Are formed.

In this embodiment, however, the air flow intake port 4
A pair of air volume adjustment mechanisms 49 that automatically increase or decrease the opening area of the air flow inlet 47 depending on the strength of the air flow are arranged on both sides of the air flow control unit 7. The air volume adjusting mechanism 49 is horizontally rotatably arranged at a side end portion of the airflow intake port 47, and has a damper member 51 on the airflow intake port 47 side and a flap member 53 on the outer side. It has a member 55.

That is, the damper member 51 and the flap member 53 are fixed to the support member 57 at an angle of, for example, about 100 degrees. Both ends of the support member 57 are rotatably fixed to the upper surface 33 and the bottom surface 41 of the airflow intake member 35 by, for example, pin members 59. Further, between the tip end portion of the damper member 51 and the inner surface of the airflow intake member 35, a biasing mechanism 6 including a tension spring that biases the damper member 51 toward the inside of the airflow intake member 35.
1 is arranged.

Further, in this embodiment, the air flow intake member 35 is provided.
A triangular airflow guide plate 63 is fixed to the bottom surface 41 of the airflow guide plate 63, and the airflow intake member 35 automatically rotates so that the airflow intake port 47 is always oriented in the direction of the airflow. . The airflow guide plate 63 is arranged substantially parallel to the opening direction of the airflow intake 47.

In the under-floor air-conditioning blower configured as described above, when the air flow is weak, the force pressing the flap member 53 is weak, so that the damper member 51 is weak.
Is sufficiently pulled toward the inside of the airflow intake member 47 by the urging mechanism 61, the opening area of the airflow intake port 47 is increased, and the airflow easily flows in. On the other hand, when the airflow is strong, the force pressing the flap member 53 is strong, so that the rotation of the flap member 53 causes the damper member 51 to face the airflow inlet 47 side against the force of the biasing mechanism 61. And moves sufficiently, the opening area of the airflow inlet 47 becomes small, and it becomes difficult for the airflow to flow in.

In the underfloor air-conditioning blower configured as described above, the airflow intake member 35 having the airflow intake 47 on the side surface is arranged below the blowout grill 31, and the airflow intake is performed. The member 35 to the outlet grill 31,
An air volume adjusting mechanism that supports the blowout grill 31 relatively rotatably around the central axis and automatically increases or decreases the opening area of the airflow inlet 47 depending on the strength of the airflow. Since 49 is provided, it is possible to easily maintain the amount of conditioned air flowing into the room from the outlet grill 31 substantially constant even when the strength of the air flow changes.

Further, in the underfloor air-conditioning blower configured as described above, the air volume adjusting mechanism 49 is arranged at the side end portion of the air flow inlet 47 so as to be horizontally rotatable.
From the damper member 51 on the side of the airflow intake 47, the rotating member 55 on which the flap member 53 is formed on the outside, and the urging mechanism 61 that urges the damper member 51 toward the inside of the airflow intake member 35. Since it was configured, with a very simple configuration,
It is possible to easily obtain an underfloor air conditioning blowing device that can maintain the amount of conditioned air flowing into the room from the blowing grill 31 substantially constant even when the strength of the airflow changes.

FIGS. 6 to 9 show another embodiment of the underfloor air-conditioning blowing device of the present invention. In this embodiment, the air volume adjusting mechanism 65 is provided at both end portions of the air flow intake port 47. It has a pair of flap members 67 rotatably arranged in the horizontal direction. The flap member 67 has a container shape having a fan-shaped upper surface 69 and a bottom surface 71, and has an inner side surface opened into the airflow intake member 73.

The main portion of the flap member 67 is supported by the support pin 69 as shown in FIG.
Is horizontally rotatably supported at the side end of the. A fan-shaped flap-side opening 75 is formed on the bottom surface 71 of the flap member 67. This flap member 67 is
A biasing mechanism 77 formed of a spring arranged between the inner end of the flap member 67 and the airflow intake member 73 constantly biases the member toward the outside.

On the other hand, on the bottom surface 79 of the air flow intake member 73,
A fan-shaped main body side opening 81 is formed in the flap side opening 75 so as to be superposed. In the under-floor air-conditioning blowing device configured as described above, when the flow of the air flow is weak, as shown in FIG.
Since the force of pressing is weak, the opening side of the flap member 67 is sufficiently pulled toward the outside of the airflow intake member 73 by the biasing mechanism 77, and the main body side opening 81 and the flap side opening 7
The overlapping area with 5 becomes zero, and the amount of conditioned air reflowing from the airflow intake member 73 becomes zero.

On the other hand, when the air flow is in the middle, as shown in FIG.
As shown in FIG. 6, since the force pressing the flap member 67 is relatively strong, the flap member 67 moves toward the air flow inlet 47 side against the force of the biasing mechanism 77 by the rotation of the flap member 67. The main body side opening 81 and the flap side opening 7
5, the overlapping area with 5 becomes relatively large, and the airflow intake member 73
The amount of conditioned air re-flowing from is relatively large.

On the other hand, when the airflow is strong, the force pressing the flap member 67 is strong as shown in FIG. 13, so that the flap member 67 is rotated to rotate the flap member 67.
Sufficiently moves toward the airflow intake 47 side against the force of the biasing mechanism 77, and the main body side opening 81 and the flap side opening 7
The overlapping area with 5 increases, and the amount of conditioned air that reflows from the airflow intake member 73 increases.

In the underfloor air-conditioning blower constructed as described above, the airflow intake member 73 having the airflow intake 47 on the side surface is arranged below the blowout grill 31, and the airflow intake is performed. The member 73 to the outlet grill 31,
An air flow rate adjusting mechanism 65 is arranged to support the air outlet grill 31 relatively rotatably about the central axis thereof and to reflow the airflow flowing from the airflow inlet 47 to the underfloor space according to the strength of the airflow. Even when the strength of the air flow changes, it becomes possible to easily maintain the amount of the conditioned air flowing into the room from the blowout grill 31 substantially constant.

In the underfloor air-conditioning blower constructed as described above, the air volume adjusting mechanism 65 is horizontally rotatably arranged at the side end portion of the air flow intake port 47, and the inner side surface of the air flow intake mechanism is blown. A container-shaped flap member 67 opened in the insert member 73, a flap-side opening 75 opened in the bottom surface 71 of the flap member 67, and the flap member 67.
Is constituted by an urging mechanism 77 for urging the air flow toward the outside and a main body side opening 81 which is opened on the bottom surface 79 of the air flow intake member 73 so as to be overlapped with the flap side opening 75. With the configuration, it is possible to easily obtain an underfloor air conditioning blowing device that can maintain the amount of conditioned air flowing into the room from the blowing grill 31 substantially constant even when the strength of the airflow changes.

[0034]

As described above, in the underfloor air-conditioning blowing device according to the first aspect, the airflow intake member having the airflow intake port on the side surface is arranged below the blowout grill, and the airflow intake member is provided. Is supported on the outlet grill so as to be rotatable relative to the center axis of the outlet grill, and the opening area of the inlet is automatically increased or decreased according to the strength of the airflow. Since the air volume adjusting mechanism is arranged, it is possible to easily maintain the amount of conditioned air flowing into the room from the air outlet grill substantially constant even when the strength of the air flow changes.

In the underfloor air-conditioning blowing device according to a second aspect of the present invention, in the first aspect, the air flow rate adjusting mechanism is horizontally rotatably arranged at a side end portion of the airflow intake port, and is provided on the airflow intake port side. Since the damper member is composed of the rotating member on which the flap member is formed on the outer side and the biasing mechanism which biases the damper member toward the inner side of the airflow intake member, the airflow of the airflow is very simple. It is possible to easily obtain an underfloor air-conditioning blow-out device that can keep the amount of conditioned air flowing into the room from the blow-out grill almost constant even when the strength changes.

In the underfloor air-conditioning blower of the third aspect, an airflow intake member having an airflow intake on the side surface is arranged below the blowout grill, and the airflow intake member is provided to the blowout grill. While supporting the relative rotation around the center axis of the grill, the airflow adjustment mechanism that reflows the airflow that has flowed in from the airflow inlet to the underfloor space according to the strength of the airflow is arranged. Even when it changes
It is possible to easily maintain the amount of conditioned air flowing into the room from the blowout grill almost constant.

According to a fourth aspect of the present invention, there is provided the underfloor air-conditioning blower according to the third aspect, wherein the air flow rate adjusting mechanism is horizontally rotatably arranged at a side end portion of the airflow intake port, and the inner side surface is provided with the airflow intake port. A container-shaped flap member opened in the member, a flap side opening opened in the bottom surface of the flap member, a biasing mechanism for biasing the flap member outward, and a bottom surface of the airflow intake member. Since it is composed of the main body side opening that is openable to the flap side opening so that it can overlap, even when the strength of the air flow changes,
There is an advantage that it is possible to easily obtain an underfloor air-conditioning blowout device that can maintain the amount of conditioned air flowing into the room from the blowout grill almost constant.

[Brief description of drawings]

FIG. 1 is a top view showing an embodiment of an underfloor air conditioning blowing device of the present invention.

FIG. 2 is a front view of the underfloor air conditioning blowing device of FIG.

FIG. 3 is a side view of the underfloor air conditioning blowing device of FIG. 1.

FIG. 4 is a perspective view showing the underfloor air conditioning blowing device of FIG. 1.

5 is a cross-sectional view showing details of a connecting portion between a bearing portion and a support shaft of the underfloor air conditioning blowing device of FIG.

FIG. 6 is a top view showing another embodiment of the blowing device for underfloor air conditioning of the present invention.

FIG. 7 is a front view of the underfloor air conditioning blowing device of FIG. 6.

FIG. 8 is a side view of the underfloor air conditioning blowing device of FIG.

FIG. 9 is a perspective view showing the underfloor air conditioning blowing device of FIG. 6;

FIG. 10 is a perspective view showing details of a connecting portion between an airflow intake member and a flap member of the underfloor air conditioning blowing device of FIG.

FIG. 11 is an explanatory diagram showing a state when the airflow is weak in the underfloor air-conditioning blowing device of FIG. 6.

FIG. 12 is an explanatory view showing a state in which the airflow in the underfloor air-conditioning blowing device of FIG. 6 is in the middle.

FIG. 13 is an explanatory diagram showing a state when the airflow is strong in the underfloor air conditioning blowing device of FIG. 6.

FIG. 14 is a cross-sectional view showing an example of an underfloor air conditioning system.

FIG. 15 is an explanatory diagram showing an arrangement example of blowing devices.

FIG. 16 is a cross-sectional view showing an example of a conventional underfloor air conditioning blowing device.

FIG. 17 is a perspective view of the underfloor air conditioning blowing device of FIG. 16.

[Explanation of symbols]

 31 Blowout grill 33 Upper surface 35,73 Airflow intake member 41,71,79 Bottom surface 47 Airflow intake port 49,65 Air volume adjustment mechanism 51 Damper member 53,67 Flap member 55 Rotating member 61,77 Energizing mechanism 75 Flap side Opening 81 Main unit side opening

Claims (4)

[Scope of utility model registration request] 1. An underfloor air-conditioning blower having a blowout grill disposed in an opening formed in a floor panel, wherein an airflow intake member having an airflow intake on a side surface is disposed below the blowout grill. Then, this air flow intake member,
The outlet grill is supported so as to be rotatable relative to the center axis of the outlet grill, and the opening area of the airflow inlet is automatically increased or decreased according to the strength of the airflow. An underfloor air-conditioning blower characterized by having an air volume adjustment mechanism. 2. An air volume adjusting mechanism is rotatably arranged in a horizontal direction at a side end portion of an air flow intake port, and has a damper member on the air flow intake port side and a flap member formed on the outside. The underfloor air-conditioning blowing device according to claim 1, further comprising: a biasing mechanism that biases the damper member toward the inside of the airflow intake member. 3. An underfloor air-conditioning blower having a blowout grill disposed in an opening formed in a floor panel, wherein an airflow intake member having an airflow intake on a side surface is disposed below the blowout grill. Then, this air flow intake member,
An air volume adjusting mechanism is supported on the blowout grill so as to be rotatable relative to the center axis of the blowout grill, and the airflow introduced from the airflow inlet is reflowed to the underfloor space according to the strength of the airflow. Underfloor air-conditioning blower characterized by being arranged. 4. An air volume adjusting mechanism, a container-like flap member which is rotatably arranged in a horizontal direction at a side end portion of an air flow intake port and has an inner side surface opened into the air flow intake member, and the flap. A flap-side opening that is opened on the bottom surface of the member, a biasing mechanism that biases the flap member toward the outside, and a main body that is openable on the flap-side opening portion on the bottom surface of the airflow intake member. The underfloor air-conditioning blow-out device according to claim 3, further comprising a side opening.