JPH0531452Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an air blowing unit for a heating system, which is mainly used to send warm air generated by a heating device to each room.

(Prior technology) A hot air heating system sends heated air generated by a central stove to each room through ducts, with some of the ducts leading to the outside of the building for ventilation. A ventilation fan is installed. However, if dirty inside air is exhausted and outside air is introduced, the indoor temperature drops and heating efficiency deteriorates.

For this reason, in the heating ventilation system disclosed in JP-A No. 62-26437, a heat exchanger is installed between the inside air exhaust duct and the outside air intake duct, and the outside air is preheated with exhaust heat to reduce heat loss. It's on. Additionally, in this system, outside air is first introduced near the stove, further heated, and then indirectly sent to each room through hot air ducts. The warm air is conveyed either forcibly by a blower unit installed in the hot air duct or by guiding the heated air to the rising portion of the hot air duct for natural circulation.

(Problem that the invention aims to solve) However, in conventional heating systems, when the blower unit stops, even if the ventilation blower is operating, outside air is only introduced into the room where the stove is located, and other The disadvantage is that the room cannot be ventilated. Also, in the case of a natural circulation type without a blower unit, when the stove is stopped, the heated air does not rise, so outside air is not transported to other rooms.

The present invention was devised in view of the above circumstances, and its purpose is to provide an air blower unit for a heating system that can ventilate all spaces to be heated even when the warm air supply blower stops. It is in.

(Means for Solving the Problems) In order to achieve the above object, the air blower unit for a heating system of the present invention has one end connected to a duct leading to a heat source and the other end connected to a duct leading to a space to be heated. a warm air passageway, a warm air supply blower that blows air from the hot air passageway toward the space to be heated, and a duct that is connected at one end to a duct that leads to a heat source and the other end leads to the outdoors via a blower for introducing outside air. A ventilation passage connected to the hot air passage and a bypass connecting the hot air passage and the ventilation passage, and when the warm air supply blower is operating, the bypass is closed and the warm air passage and the ventilation passage are opened respectively. When the system is stopped, the bypass is opened and the warm air passageway and the ventilation passageway are each closed on the side of the space to be heated.

(Function) According to the blower unit for a heating system of the present invention, when the warm air supply blower is in operation, the damper closes the bypass and opens the hot air passage and the ventilation passage. As a result, the outside air blown into the ventilation passage by the outside air intake blower is once supplied to the heat source and heated, and then sucked into the hot air passage through the duct leading to the heat source, and from the hot air passage to the heating target. delivered into space. Further, when the warm air supply blower is stopped, the bypass is opened by the damper, and the heated space side of the hot air passage and the ventilation passage are respectively closed. As a result, the outside air blown into the ventilation passage by the outside air introduction blower flows into the hot air passage through the bypass, and is supplied to the space to be heated through the hot air passage.

(Example) Fig. 1 shows a heating system in which the blower unit of the present invention is incorporated. 5 and a heat exchange unit 6.

The stove 1 heats the room 7a and generates heated air for heating other rooms. The blower unit 2 sucks this heated air through the suction port 8 and supplies it to the rooms 7b, 7c, 7d, and 7e through the suction duct 3a and the hot air duct 3.

Inside the heat exchange unit 6, a blower for introducing outside air, a heat exchanger, etc. (both not shown) are housed. Send it to the heating part of stove 1. Therefore,
After the outside air is preheated by the heat exchanger in the heat exchange unit 6, it is once discharged to the vicinity of the stove 1 through the ventilation duct 5, the blower unit 2, and the duct 5a.
It is further heated and sent from the hot air duct 3 to each room 7b, 7.
Sent to c, 7d, 7e.

Fig. 2 shows an enlarged front view of the blower unit 2, Fig. 3 shows an enlarged side view thereof, and Fig. 7 shows a perspective view thereof. It is composed of a second damper 12.

Inside the casing 9, a partition wall 13 (third
A hot air passage 14 and a ventilation passage 15 are formed by the hot air passage 14 and the ventilation passage 15, and the upper portions of each passage 14 and 15 communicate with each other through a bypass 16. A connection port 14a of the duct 3a is provided on the inlet side of the hot air passage 14, and a connection port 14b of the hot air duct 3 is provided on the exit side. Furthermore, a connection port 15a for the ventilation duct 5 is provided on the entrance side of the ventilation passage 15, and a connection port 15b for the duct 5a is provided on the exit side.

A blower 10 for blowing out warm air is installed in the middle of the hot air passage 14, and a wind pressure damper 11 is attached to the blowing side of the blower 10. When the blower 10 operates, the wind pressure damper 11 rotates to the position shown by the imaginary line by the wind pressure and opens the hot air passage 14. A second damper 12 is also installed in the ventilation passage 15, and the second damper 12 is manually rotated to switch between the ventilation passage 15 and the bypass 16. The blower unit 2 configured as described above operates as follows.

First, when the blower 10 is activated, the wind pressure causes the wind pressure damper 11 to rotate upward, and the hot air passage 14 is opened. Further, the second damper 12 is manually rotated to the imaginary position (upward) to open the ventilation passage 15 and close the bypass 16. Now the outside air from the ventilation duct 5 is transferred to the ventilation passage 15, the duct 5a
As shown in FIG. 1, after being heated by the stove 1, it is sucked into the inlet 8, and then passed through the hot air duct 3 to each room 7b, 7c, 7d, 7.
Sent to e. Next, when the blower 10 stops, the wind pressure disappears, so the wind pressure damper 11 returns to the solid line position and closes the hot air passage 14. Further, the second damper 12 is manually brought down to the solid line position to close the ventilation passage 15 and open the bypass 16. With this, the outside air from the ventilation duct 5 flows in through the connection port 15a, passes through the bypass 16, passes through the connection port 14b and the hot air duct 3, and is sent to each room 7b, 7c, 7d, and 7e. That is, since outside air is not released to the stove 1 side, even if the blower 10 is stopped, the outside air is supplied to each room by the action of the outside air introduction blower in the heat exchange unit 6 (which operates continuously 24 hours a day). Become.

FIG. 4 shows an embodiment in which the second damper 12 is driven by a motor, and the same reference numerals are given to the same components as in the previous embodiment.

In this embodiment, a long hole 18 is formed on one side of the second damper 12, and a pin 20 of a rotating lever 19 is inserted into the long hole 18. The rotation lever 19 is
It has a letter-shaped shape and is rotatably attached to the partition wall 21 by a motor shaft 22 (the motor is not shown), and a pin 23 is also provided on the opposite side of the other end. In addition, two micro switches 2 are installed on the partition wall 21.
4 and 25 are attached, and these micro switches 24 and 25 are designed to stop the motor when the switch arms 24a and 25a are pushed.

Therefore, when the damper drive button (not shown) is pressed when the blower 10 (FIG. 2) is in operation, the damper 12 is rotated clockwise about the support shaft 17 by the motor and rotation lever 19. The bypass 16 is closed and the ventilation passage 15 is opened. At this time, as shown in FIG. 5, the pin 23 of the rotating lever 19 pushes the arm 24a of the micro switch 24 to stop the motor. The second damper 12 now stops at the closed position of the bypass 16, and the outside air flows toward the ventilation passage 15 as in the previous embodiment.

Next, when the damper drive button is pressed while the blower 10 is stopped, the rotary lever 19 is rotated clockwise by the motor, and the arm 24a of the micro switch 24, which was pressed by the pin 23, is
3 is released, it returns to its original position by the spring force of the arm 24a. Further, the second damper 12 rotates counterclockwise, as seen in FIG. 6, to open the bypass 16 and close the ventilation passage 15. At that time, as shown in FIG.
3 pushes the arm 25a of the micro switch 25, so the motor stops. Therefore, the second damper 12
stops at the closed position of the ventilation passage 15, and outside air flows toward the bypass 16 as in the previous embodiment.

Furthermore, by interlocking the damper driving motor with turning on and off of the blower 10, the path switching of the second damper 12 is automatically performed.

Furthermore, the air supplied from the hot air duct 3 to the rooms 7a and 7b is transferred to the exhaust duct 4 as shown in FIG.
is released outdoors through the In this case, a vent is provided in the door of each room to exhaust the air from the rooms 7c, 7d, and 7e through the rooms 7a and 7b, or the exhaust duct 4 is connected to the rooms 7c, 7d, and 7e as well. Dirty air from each room may be directly exhausted.

(Effects of the invention) As detailed above, according to the air blower unit for a heating system of the invention, when the hot air supply blower is operating, warm air is fed to the space to be heated,
When the warm air supply fan is stopped, outside air is supplied to the space to be heated, so even when the warm air supply fan is stopped, the space to be heated can be ventilated.

[Brief explanation of the drawing]

Fig. 1 is a simplified diagram of a heating system incorporating the blower unit of the present invention, Figs. 2 and 3 are a front view and a right side view of the blower unit, respectively, and Fig. 4 is a perspective view of an electric damper. 5 and 6 are simplified diagrams showing the operating state of the electric damper, and FIG. 7 is a perspective view of the blower unit. In the diagram, 1...Stove, 2...Blower unit,
3... Warm air duct, 5... Ventilation duct, 9... Casing, 10... Air blower, 11... Wind pressure damper, 12... Second damper, 14... Hot air passage, 1
5...Ventilation passage, 16...Bypass.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A hot air passage connected at one end to a duct leading to a heat source and at the other end connected to a duct leading to a space to be heated, and directing air from the hot air passage to the space to be heated. The hot air passage and the ventilation passage are connected to a hot air supply blower that blows air, a ventilation passage connected at one end to a duct leading to a heat source, and the other end connected to a duct leading outdoors via an outside air intake blower. When the bypass and warm air supply blower are in operation, the bypass is closed and the warm air passage and ventilation passage are opened, respectively.
A blower unit for a heating system, comprising a damper that opens a bypass and closes a warm air passageway and a ventilation passageway on the side of a space to be heated, respectively, when a hot air supply blower is stopped. (2) The damper is a wind pressure damper that opens a hot air passage by the wind pressure of a hot air supply blower, and a wind pressure damper that closes a bypass and opens a ventilation passage in one position, and opens the bypass in the other position. and a second damper for closing a ventilation passage.