JPH0239154Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention enables the valve body to be closed by the wind pressure of the fan by reversing the air supply from the fan, and selects between the air in the underfloor space and the outside air. The present invention relates to an air conditioner that can be installed in a room.

[Background technology]

During the daytime in summer, the room can be air-conditioned by blowing cold air from the under-floor space, which is relatively low compared to the outside temperature, into the room, and at night, the temperature is lowered by sky radiation compared to the inside of the under-floor space. The applicant proposed an air conditioner that improves air conditioning efficiency by introducing outside air with a reduced temperature, in the specification of Utility Model Application No. 60-4634. The flow path was changed by switching the flow path.

Therefore, in order to operate the damper, a drive device such as an electric motor or a linear actuator is required.
The structure is complex and expensive, and there is a risk of accidents.

[Purpose of invention]

In the present invention, a first air flow path having a duct that guides air from the underfloor space into the room and a second air flow path having a duct that leads outside air into the room are connected by a fan that blows air in the forward and reverse directions. The air passage is formed through the air passage, and each duct is provided with a valve body that closes by the wind pressure of the fan while air is being supplied from the other air passage, and the air passage can be switched by simply changing the air supply direction of the fan. The purpose of the present invention is to provide an air conditioner that can solve the above-mentioned problems.

[Disclosure of invention]

An embodiment of the present invention will be described below based on the drawings. In FIGS. 1 to 5, the air conditioner 1 of the present invention is
A first air flow path 3 that opens in the underfloor space A and has a duct 13 that connects to the room R from one end 11 of the air flow path 2 to the other end 12, and the other end 12 of the air flow path 2 that opens to outside air. A second air flow path 4 having a duct 14 passing through one end 11 and communicating with the room R is provided, and a fan 5 capable of sending air in forward and reverse directions is interposed in the air supply path 3, and the first and second A valve body 6 is provided in each duct 13, 14 of the air flow path 3, 4.

In this example, the ducts 13 and 14 join together at a joint 21 at an intermediate position between the air supply path 2 and the room R, and communicate with the room R via a single air supply pipe 20.

Underfloor space A is a cloth foundation 23 that surrounds the lower part of the house.
It is a relatively wide space surrounded by a floor body 24 and a subfloor surface 25, and the cloth foundation 23 is provided with a ventilation hole 26 that allows the underfloor space A to be communicated with outside air. Further, in the underfloor space A, there is a box body 2 that accommodates the air supply path 2.
9 is provided.

In this example, the box body 29 is vertically partitioned using two partition plates 31 and 32 as shown in FIG. 2, thereby forming the air passage 2 in the space behind the partition plates 31. , the coupling portion 21 is provided in a space in front of the partition plate 32. Further, the air supply path 2 is provided with a partition plate 33 that horizontally traverses the interior of the space forming the air supply path 2 at an intermediate position and has a through hole 34 . The fan 5, which can supply air in the forward and reverse directions, is disposed in the through hole 34.

The air supply passage 2 is divided into two parts above and below the fan 5, with a lower air supply passage 2A containing the one end 11 of the air supply passage 2 below, and an upper part containing the other end 12 above. It is divided into an air supply path 2B.

The box body 29 also has a first connection duct 36 and a second connection duct 37 arranged above and below between the partition plates 31 and 32 and passing through the partition plates 31 and 32.
and are bridged respectively. First connection duct 3
6 connects one end 11 of the air supply path 2 and the connecting portion 21 to the second
The connecting duct 37 connects the other end 12 of the air supply path 2 and the connecting portion 21 to each other.

Furthermore, an underfloor ventilation duct 42 having an underfloor vent 41 at its tip that opens in the underfloor space A is connected at one end 11 of the air supply path 2, while the other end 1
At 2, an outside air ventilation duct 44 having an outside air ventilation port 43 and passing through the fabric foundation 23 is connected to the outside air.

One end of the air pipe 20 is connected to the joint 21, and the other end of the air pipe 20 is connected to the floor body 24.
Room vent 4 that opens toward room R through the
Connect to 6. In addition, in the room R, a ventilation opening 47 is provided in the wall W to allow communication with the outside air.

A first valve body 6A and a second valve body 6B are attached to the first and second connection ducts 34 and 37, respectively.

As shown in FIG. 3, the first valve body 6A is a duct body 50 having a rectangular cross section, and a valve plate 51 that fits on the inner surface of the duct body 50, which is positioned above the center of the duct body 50, and a pin that is inserted through the inside of the duct body 50. 52, and a locking piece 53 that can prevent rearward rotation of the valve plate 51 is fixed to the inner surface of the duct body. Therefore, the valve plate 51 is located in the front, that is, in the room R.
The wind pressure opens the flow of air toward the air passage 2, while closing the flow of air toward the rear, that is, the air supply path 2.

In addition, when the duct body 50 has a circular cross section as shown in FIG. 4, the height of the locking piece 53 is increased,
In addition, by making the outer shape of the valve body 50 slightly smaller than the inner cross section of the duct body 50, it is possible to form the valve body 6A that can block air flow in the opposite direction.

Note that the second valve body 6B is similar to the first valve body 6A.
It is formed in almost the same way.

The underfloor ventilation duct 42 and the outside air ventilation duct 44 have the same configuration as the first valve body 6A, and are open to the flow of air flowing toward the air supply path 2, while blocking the flow in the opposite direction. I can do it. Third
A fourth valve body 6C and a fourth valve body 6D are provided, respectively.

Therefore, by blowing air in the forward direction from the fan 5, the third and first valve bodies 6C and 6A are opened by the wind pressure, and the fourth and second valve bodies 6D and 6B are closed, thereby opening the underfloor ventilation opening. 41 opens in the underfloor space A and connects from one end 11 of the air supply path 2 to the other end 12 in order to conduct to the room ventilation port 46 via the underfloor ventilation duct 42, the air supply path 2, and the first connection duct 36. A first air flow path 3 having a duct 13 leading to the room R is provided.

Also, by causing the fan 5 to supply air in the opposite direction, the fourth and second valve bodies 6D and 6B are opened, and the third and second valve bodies 6D and 6B are opened.
The first valve bodies 6C and 6A are closed, and the outside air vent 43
passes through the outside air ventilation duct 44, the ventilation path 2, and the second connection duct 37, and connects to the room ventilation port 46, so it opens with outside air B and passes from the other end 12 of the air supply path 2 to the one end 11 to the room R. A second air flow path 4 is provided having a duct 14 leading to.

However, during the daytime in summer, etc., as shown in FIG. 5, when the fan 5 blows air in the forward direction, the wind pressure opens the first and third valve bodies 6A and 6C, and the second and third valve bodies 6B, 6D is closed, the air in the underfloor space A is discharged into the room R through the first air flow path 3, air-conditions the room R, and is discharged outdoors from the ventilation port 47. Note that while the air is flowing through the first air flow path 3, the fourth valve body 6D is closed, so that it is possible to prevent outside air from entering the air supply path 2, and to prevent the second valve body 6B from being blocked. Therefore, the air flow flowing between the one end 11 of the first air flow path 3 and the room vent 46 returns to the air supply path 2.
can prevent backflow.

Also, at night, etc., as shown in Figure 6, the fan 5
By supplying air in the opposite direction, the wind pressure of the fan 5 causes the second and fourth valve bodies 6B, 6D to
opens and the second and third valve bodies 6A, 6C close,
Therefore, the outside air passes through the second air flow path 4 and enters the room R.
The room R can be air-conditioned with outside air.
The air in the underfloor space A is prevented by the valve body 6C, and the air flowing from the air passage 2 toward the room R is prevented from flowing back into the air passage 2 by the valve body 6A.

In the device of the present invention, as shown in FIG. 7, an air supply path 2 in which a fan 5 is interposed is formed inside a box body 29, and a lower duct 55 extending from one end 11 and having a valve body 6B interposed therein; Other end 12
The upper duct 56 with the valve body 6A interposed therebetween can also be formed by a single partition plate 57 that spans within the box body 29, and the present invention can be modified into various embodiments.

[Effects of the invention] As described above, the air conditioner of the present invention has a first air flow path that opens in the underfloor space and has a duct that connects to the room from one end of the air supply path to the other end, and an air conditioner that opens in the outside air. and a second air passage having a duct leading from one end to the room from the other end of the air supply passage, and a fan for supplying air in forward and reverse directions is interposed in the air supply passage, and the first and second A valve body is installed in one air flow path to close the duct using the wind pressure of the fan while air is being supplied to the other air flow path.As a result, the fan can be used to supply air in the forward and reverse directions without using an electric damper. Since the flow path can be switched without the need to provide an air flow path, air in the underfloor space and outside air can be selectively introduced into the room, and excellent effects can be achieved, such as simplifying the device and making maintenance easier.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention. Second
The figure is a perspective view showing the main parts. FIG. 3 is a perspective view illustrating the valve body. FIG. 4 is a perspective view showing another example of the valve body. Figures 5 and 6 are diagrams showing the effect. FIG. 7 is a diagram showing another embodiment. 2... Air supply path, 3... First air flow path, 4...
Second air flow path, 5...Fan, 6, 6A, 6
B, 6C, 6D... Valve body, 11... One end, 12...
...Other end, 13...Duct, 14...Duct, A...
...Space under the floor, R...Room.

Claims (1)

[Scope of utility model registration request] a first air flow path having a duct that opens in the underfloor space and connects to the room from one end of the air supply path to the other end; a second air flow path having a duct communicating with the air flow path, and the air flow path includes a forward direction passing through the first air flow path from one end to the other end, and a second air flow path passing through the first air flow path from one end to the other end.
A fan is interposed to send air in the opposite direction through the air flow path, while the air pressure of the fan is applied to each duct of the first and second air flow paths while air is being fed through the other air flow path. , an air conditioner comprising a valve body that closes the duct.